CN109691205A - Network node, user apparatus and method for wireless communication system - Google Patents
Network node, user apparatus and method for wireless communication system Download PDFInfo
- Publication number
- CN109691205A CN109691205A CN201880003401.9A CN201880003401A CN109691205A CN 109691205 A CN109691205 A CN 109691205A CN 201880003401 A CN201880003401 A CN 201880003401A CN 109691205 A CN109691205 A CN 109691205A
- Authority
- CN
- China
- Prior art keywords
- control channel
- resource element
- element groups
- mapping
- down control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
-
- 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
- H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention provides a kind of network nodes, user apparatus and method for wireless communication system.Network node includes processor and transceiver.Processor is configured to multiple resource element groups set of distribution Physical Downlink Control Channel, which has the candidate physical down control channel defined at least one control channel unit polymerization grade.Multiple control channel units are assigned to user apparatus and including multiple resource element groups set.Processor is configured to the resource element groups of resource element groups set being mapped to continuous time and/or frequency resource.Transceiver is configured to that Physical Downlink Control Channel is sent to user apparatus in the resource of distribution.
Description
Technical field
The present invention relates to field of wireless communications, especially with regard to a kind of network node for wireless communication system, user
Device and method.
Background technique
In long term evolution (long term evolution, LTE), the physical channel of LTE can be classified as downlink
Channel and uplink channel.Downlink channel is for example including Physical Downlink Shared Channel (physical downlink
Shared channel, PDSCH) and Physical Downlink Control Channel (physical downlink control channel,
PDCCH).Uplink channel for example including Physical Uplink Shared Channel (physical uplink shared channel,
) and Physical Uplink Control Channel (physical uplink control channel, PUCCH) PUSCH.
PDCCH for transmitting down link control information, this down link control information to user apparatus notice with
PDSCH, uplink resource permit resource point relevant with the downlink resource allocations in up-link power control order
Match or dispatches.
PDCCH signal is based on cell specific reference signal (cell specific reference signal, CRS) and sets
It counts into and is demodulated in user device.However, not considering the increase of LTE system complexity using CRS.Cell specific reference
Signal using advanced technology can be limited to increase cell capacity.
Summary of the invention
The purpose of the present invention is to provide the network nodes, user apparatus and method for wireless communication system, with balance
Channel estimating performance and various gains including frequency selectivity gain and time/frequency diversity gain.
The first aspect of the present invention provides a kind of network node for wireless communication system.The network node includes place
Manage device and transceiver.The processor is configured to distribution Physical Downlink Control Channel (physical downlink control
Channel, PDCCH) multiple resource element groups (resource element group, REG) set, the physical down control
Channel, which has, is directed at least one control channel unit (control channel element, CCE) polymerization grade
The candidate physical down control channel that (aggregation level, AL) is defined.Multiple CCE are assigned to user apparatus and packet
Include multiple REG.REG collection including one group of REG is combined into the map unit of candidate PDCCH.The processor is configured to the REG
The REG of set is mapped to continuous time and/or frequency resource.The transceiver is configured in the resource of distribution will be described
PDCCH is sent to the user apparatus.
According to the embodiment for combining the first aspect of the present invention, the processor is configured to will in a manner of continuous or dispersion
The REG compound mapping of the candidate PDCCH is to frequency.
According to the embodiment for combining the first aspect of the present invention, the processor is configured to the time in a continuous manner
Select the REG compound mapping of PDCCH to the time.
According to the embodiment for combining the first aspect of the present invention, the mapping mode that the processor is configured to time priority
By the REG compound mapping to multiple orthogonal frequency division multiplexing (orthogonal frequency-division
Multiplexing, OFDM) symbol, and it includes for the multiple of the candidate PDCCH that the REG, which is integrated on each REG,
Demodulated reference signal (demodulation reference signal, DMRS).
According to the embodiment for combining the first aspect of the present invention, it includes DMRS in the first OFDM symbol that the REG, which is integrated into,.
According to the embodiment for combining the first aspect of the present invention, the REG is integrated into the second OFDM symbol comprising being used for
The DMRS of the candidate PDCCH.
According to the embodiment for combining the first aspect of the present invention, the REG is integrated into not including in the second OFDM symbol and use
In the DMRS of the candidate PDCCH.
According to the embodiment for combining the first aspect of the present invention, the REG is integrated into third OFDM symbol comprising being used for
The DMRS of the candidate PDCCH.
According to the embodiment for combining the first aspect of the present invention, the REG is integrated into not including in the 4th OFDM symbol and use
In the DMRS of the candidate PDCCH.
According to the embodiment for combining the first aspect of the present invention, the candidate PDCCH is in nido structure, big CCE
AL includes multiple CCE of small CCE AL.
According to the embodiment for combining the first aspect of the present invention, the mapping mode that the processor is configured to time priority
The REG set is mapped, and the candidate PDCCH is in nido structure.
According to the embodiment for combining the first aspect of the present invention, the processor is configured to the mapping mode preferential with frequency
The REG set is mapped, and the candidate PDCCH is in nido structure.
The second aspect of the present invention provides a kind of user apparatus for wireless communication system.The user apparatus includes place
Manage device and transceiver.The processor is configured to determine that multiple REG at least one network node gather.The transmitting-receiving
Device, which is configured in PDCCH gather the REG, is sent at least one network node.The REG set is allocated for institute
PDCCH is stated, the PDCCH has the candidate PDCCH defined at least one CCE AL.Multiple CCE are assigned to user's dress
It sets and including multiple REG.REG set including one group of REG is the map unit of the candidate PDCCF.The processor configuration
Continuous time and/or frequency resource are mapped at the REG for gathering the REG.
According to another embodiment for combining the second aspect of the present invention, the transceiver is configured in the resource of distribution will
PDCCH reception is to user apparatus, and the transceiver is configured to send the REG set in the PDCCH.
According to another embodiment for combining the second aspect of the present invention, the processor is configured to continuous or dispersion side
The REG set of the candidate PDCCH is reflected the REG compound mapping of the candidate PDCCH to frequency, or in a continuous manner by formula
It is mapped to the time.
According to another embodiment for combining the second aspect of the present invention, the mapping that the processor is configured to time priority
Mode is by the REG compound mapping to multiple orthogonal frequency division multiplexing (orthogonal frequency-division
Multiplexing, OFDM) symbol, and it includes demodulation for the candidate PDCCH that the REG, which is integrated on each REG,
Reference signal (demodulation reference signal, DMRS).
According to the embodiment for combining the second aspect of the present invention, the REG is integrated into the first OFDM symbol comprising being used for
The DMRS of the candidate PDCCH.
According to another embodiment for combining the second aspect of the present invention, the REG, which is integrated into the second OFDM symbol, includes
DMRS for the candidate PDCCH.
According to another embodiment for combining the second aspect of the present invention, the REG is integrated into the second OFDM symbol and does not wrap
Containing the DMRS for the candidate PDCCH.
According to another embodiment for combining the second aspect of the present invention, the REG, which is integrated into third OFDM symbol, includes
DMRS for the candidate PDCCH.
According to another embodiment for combining the second aspect of the present invention, the REG is integrated into the 4th OFDM symbol and does not wrap
Containing the DMRS for the candidate PDCCH.
According to another embodiment for combining the second aspect of the present invention, the candidate PDCCH is in nido structure, big
CCE AL includes the CCE of small CCE AL.
According to another embodiment for combining the second aspect of the present invention, the mapping that the processor is configured to time priority
Mode maps the REG set, and the candidate PDCCH is in nido structure.
According to another embodiment for combining the second aspect of the present invention, the processor is configured to the mapping preferential with frequency
Mode maps the REG set, and the candidate PDCCH is in nido structure.
The third aspect of the present invention provides a kind of method of network node for wireless communication system.This method includes point
Multiple resource element groups with Physical Downlink Control Channel (physical downlink control channel, PDCCH)
(resource element group, REG) set, which, which has, is directed to an at least control channel unit (control
Channel element, CCE) multiple candidate PDCCH for defining of polymerization grade (aggregation level, AL), and
The PDCCH is sent to user apparatus in the resource of distribution.Multiple CCE are assigned to user apparatus and including multiple REG.Packet
The REG set for including one group of REG is the map unit of the candidate PDCCH.This method further includes reflecting the REG that the REG gathers
It is mapped to continuous time and/or frequency resource.
According to another embodiment for combining the third aspect of the present invention, this method further includes will in a manner of continuous or dispersion
The REG compound mapping of the candidate PDCCH arrives the REG compound mapping of the candidate PDCCH to frequency, or in a continuous manner
Time.
According to another embodiment for combining the third aspect of the present invention, this method further includes the mapping mode with time priority
By the REG compound mapping to multiple orthogonal frequency division multiplexing (orthogonal frequency-division
Multiplexing, OFDM) symbol, and it includes for the multiple of the candidate PDCCH that the REG, which is integrated on each REG,
Demodulated reference signal (demodulation reference signal, DMRS).
According to the embodiment for combining the third aspect of the present invention, the REG is integrated into the first OFDM symbol comprising being used for
The DMRS of the candidate PDCCH.
According to another embodiment for combining the third aspect of the present invention, the REG, which is integrated into the second OFDM symbol, includes
DMRS for the candidate PDCCH.
According to another embodiment for combining the third aspect of the present invention, the REG is integrated into the second OFDM symbol and does not wrap
Containing the DMRS for the candidate PDCCH.
According to another embodiment for combining the third aspect of the present invention, the REG, which is integrated into third OFDM symbol, includes
DMRS for the candidate PDCCH.
According to another embodiment for combining the third aspect of the present invention, the REG is integrated into the 4th OFDM symbol and does not wrap
Containing the DMRS for the candidate PDCCH.
According to another embodiment for combining the third aspect of the present invention, the candidate PDCCH is in nido structure, big
CCE AL includes the CCE of small CCE AL.
According to another embodiment for combining the third aspect of the present invention, the method also includes with the mapping of time priority
Mode maps the REG set, and the candidate PDCCH is in nido structure.
According to another embodiment for combining the third aspect of the present invention, the method also includes the mapping sides preferential with frequency
Formula maps the REG set, and the candidate PDCCH is in nido structure.
The fourth aspect of the present invention provides a kind of method of user apparatus for wireless communication system.This method includes true
It is fixed to send at least one network for REG set for multiple REG set of an at least network node and in PDCCH
Node.The REG set is allocated for the PDCCH, and the PDCCH is multiple with defining at least one CCE AL
Candidate PDCCH.Multiple CCE are assigned to user apparatus and including multiple REG.REG set including one group of REG is the candidate
The map unit of PDCCF.This method further includes that the REG that the REG gathers is mapped to continuous time and/or frequency resource.
According to another embodiment for combining the fourth aspect of the present invention, this method further includes will in the resource of distribution
PDCCH reception sends the REG set to user apparatus and in the PDCCH.
According to another embodiment for combining the fourth aspect of the present invention, this method further includes will in a manner of continuous or dispersion
The REG compound mapping of the candidate PDCCH arrives the REG compound mapping of the candidate PDCCH to frequency, or in a continuous manner
Time.
According to another embodiment for combining the fourth aspect of the present invention, this method further includes the mapping mode with time priority
By the REG compound mapping to multiple orthogonal frequency division multiplexing (orthogonal frequency-division
Multiplexing, OFDM) symbol, and it includes demodulation for the candidate PDCCH that the REG, which is integrated on each REG,
Reference signal (demodulation reference signal, DMRS).
According to another embodiment for combining the fourth aspect of the present invention, the candidate PDCCH is in nido structure, and
Big CCE AL includes the CCE of small CCE AL.
According to another embodiment for combining the fourth aspect of the present invention, the method also includes with the mapping of time priority
Mode maps the REG set, and the candidate PDCCH is in nido structure.
According to another embodiment for combining the fourth aspect of the present invention, the method also includes the mapping sides preferential with frequency
Formula maps the REG set, and the candidate PDCCH is in nido structure.
In an embodiment of the present invention, the REG set is the map unit of the candidate PDCCF, and processor is matched
It is set to the REG compound mapping to continuous time and/or frequency resource, performance is estimated with stationary channel and including frequency
The various gains of selective gain and time/frequency diversity gain.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the embodiment of the present invention, will make below to required in embodiment description
Attached drawing is briefly described, it should be apparent that, be described below in attached drawing be only some embodiments of the present invention, for
For those of ordinary skill in the art, under the premise of not paying creative and labour, it can also be obtained according to these attached drawings
His attached drawing.
Fig. 1 shows the block diagram of the network node for wireless communication system of an embodiment according to the present invention.
Fig. 2A shows the stream of the method for the network node for wireless communication system of an embodiment according to the present invention
Cheng Tu.
Fig. 2 B shows the stream of the method for the user apparatus for wireless communication system of an embodiment according to the present invention
Cheng Tu.
Fig. 3 shows the block diagram of the user apparatus for wireless communication system of an embodiment according to the present invention.
Fig. 4 show an embodiment according to the present invention in identical orthogonal frequency division multiplexing (orthogonal
Frequency-division multiplexing, OFDM) image control channel unit in a distributed fashion on symbol
The schematic diagram of (control channel element, CCE).
Fig. 5 shows the image CCE in a distributed fashion in different OFDM symbols of an embodiment according to the present invention
Schematic diagram.
Fig. 6 shows candidate physical down control channel (the physical downlink of an embodiment according to the present invention
Control channel, PDCCH) schematic diagram.
Fig. 7 show an embodiment according to the present invention have CCE polymerization grade (aggregation level, AL)
Candidate PDCCH time priority CCE mapping schematic diagram.
The CCE that Fig. 8 shows the time priority of the candidate PDCCH with CCE AL of an embodiment according to the present invention reflects
The schematic diagram penetrated.
The CCE that Fig. 9 shows the time priority of the candidate PDCCH with CCE AL of an embodiment according to the present invention reflects
The schematic diagram penetrated.
Figure 10 shows the CCE of the time priority of the candidate PDCCH with CCE AL of an embodiment according to the present invention
The schematic diagram of mapping.
Figure 11 shows the signal of the nido structure of the CCE image for time priority of an embodiment according to the present invention
Figure.
Specific embodiment
Referring to the drawings, combination technology content, structure feature, the purpose of realization and effect to the embodiment of the present invention into
Row is described in detail.Specifically, the term in the embodiment of the present invention is only used for describing some embodiment, does not constitute to the present invention
Limitation.
Referring to Fig.1, network node 100 is communicated with wireless communication system 500.Network node 100 include a processor 102 with
An and transceiver 104.Processor 102 is communicated with transceiver 104.Network node 100 may include be coupled to transceiver 104 one
A or multiple available antennas 106.Processor 102 is disposed in a Physical Downlink Control Channel (physical
Downlink control channel, PDCCH) on distribute multiple resource element groups (resource element group,
REG) gather.PDCCH, which has, defines an at least control channel unit (control channel element, CCE) polymerization grade
Multiple candidate PDCCH of (aggregation level, AL).The quantity of multiple CCE is defined by an at least CCE AL.Multiple CCE
It is assigned to a user apparatus 300 (referring to Fig. 3) of wireless communication system 500 and including multiple REG.One REG set for example may be used
To be CCE.These REG set including one group of REG is a unit map of these candidate PDCCH.Processor 102 is configured to use
In the REG image for gathering these REG a to continuous time and/or frequency resource.Transceiver 104 is disposed at multiple points
PDCCH is transmitted to user apparatus 300 by the resource matched.
Network node 100 or base station, for example, radio base station (radio base station, RBS) is according to used in
The communication technology and term can be referred to as the transmitter of such as eNB, eNodeB, NodeB or B node in some networks.Wirelessly
Radio network node, the size based on transmission power and cell, can be different classification, for example, macro base station (macro
ENodeB), Home eNodeB (home eNodeB) or micro-base station (pico eNodeB).Radio network node can be station
(station,STA).Station can be and wireless medium (wireless medium, WM) interface and include IEEE 802.11 compatible
Any device of media access control (media access control, MAC) and physical layer (physical layer, PHY).
A referring to Figures 1 and 2 can execute method 200 in network node 100.Method 200 includes as shown in block 202
On PDCCH distribute REG set, PDCCH have define an at least CCE AL multiple candidate PDCCH and such as square 204
Shown in PDCCH is transmitted to user apparatus 300 in the resource of distribution.The quantity of multiple CCE is determined by least one CCE AL
Justice.Multiple CCE are assigned to user apparatus 300 and including multiple REG.These REG set including one group of REG is these candidates
A unit map of PDCCH.Processor 102 is disposed for these REG images for gathering these REG to a continuous time
And/or frequency resource.
Referring to Fig. 2A and Fig. 3, method 210 can be executed in user apparatus 300.Method 210 includes as shown in block 212
Decision for an at least network node 100 multiple REG set and as shown in block 214 by PDCCH REG gather
It is transmitted to an at least network node 100.REG set is distributed on PDCCH.PDCCH has the definition at least candidate of a CCE AL
PDCCH.Multiple CCE are assigned to user apparatus 300 and including multiple REG.These REG set including one group of REG is these
A unit map of candidate PDCCH.Method 210 further include these REG images for gathering these REG to a continuous time and/
Or frequency resource.
Referring to Fig. 3, user apparatus 300 includes processor 302 and transceiver 304.Processor 302 is communicated with transceiver 304.
In the present embodiment, user apparatus 300 can also include the available antenna 306 of one or more for being coupled to transceiver 304.
The processor 302 of user apparatus 300 is configured to determine that multiple REG at least one network node 100 gather.
The transceiver 304 of user apparatus 300 receives uplink control information (uplink control from processor 302
Information, UCI) and be disposed for the REG set in PDCCH being transmitted to network node 100.Divide on PDCCH
Gather with REG.PDCCH, which has, defines at least candidate PDCCH of a CCE AL.The quantity of multiple CCE is determined by an at least CCE AL
Justice.Multiple CCE are assigned to user apparatus 300 and including multiple REG.These REG set including one group of REG is these candidates
A unit map of PDCCH.Processor 302 be disposed for the REG image for gathering these REG to a continuous time and/or
Frequency resource.Transceiver 304 is configured to receive distribution information from least one network node 100.Distributing information includes frequency position
It sets and the quantity of an at least CCE AL.Transceiver 304 is disposed for transmitting REG set in PDCCH according to distribution information.
In some embodiments, REG coating is used as unit map, and wherein REG packet includes 6 REG.Including one group of REG
REG set is unit map, and REG set for example can be CCE.
User apparatus 300, such as can be movement station, wireless terminal and/or mobile terminal, is used for and wireless communication system
500 communications, otherwise referred to as cellular radio system.User apparatus 300 can further referred to as have the movement of wireless capability
Phone, cellular telephone, tablet computer or laptop computer.User apparatus 300, such as can be portable, pouch-type
Stowable, hand-held, including computer or vehicle-mounted running gear, can be connect via Radio Access Network with e.g. another
Another entity for receiving device or server carries out voice and/or data communication.User apparatus 300 can be station (station, STA).
Station can be and wireless medium (wireless medium, WM) interface and include 802.11 compatible media access control of IEEE
Any device of (media access control, MAC) and physical layer (physical layer, PHY).
In forth generation Mobile Communications technical standard (The fourth generation of mobile phone mobile
Communication technology standards, 4G) long term evolution (long term evolution, LTE) system
In, control area is across whole system bandwidth and preceding several orthogonal frequency division multiplexing are occupied in subframe (subframe)
(orthogonal frequency-division multiplexing, OFDM) symbol.Depending on payload (payload)
Size and channel quality, PDCCH carried by one or more CCE.CCE further includes multiple REG.The REG of different PDCCH interweaves
And throughout entire control area (both time and frequency) to obtain time and frequency gain.Channel estimation is to be based on entirely controlling
The cell specific reference signal (cell-specific reference signal, CRS) of the fixed position transmission in region processed
It completes.
In the new radio of 5G (new radio, NR) system, similar channel architecture can be used for PDCCH, CCE and
REG.However, there are also new development for the design of 5G NR PDCCH.For example, can have different modes by CCE/REG image
To the time/frequency region (the control resource collection in referred to as NR) of PDCCH.In PDCCH, it is understood that there may be frequency is preferentially reflected
The combination of picture or time priority image or both.In addition to this, it also supports with continuous or distribution mode image PDCCH member
Element.Every kind of image mode has merits and demerits, it is therefore an objective to utilize various gains, such as time/frequency diversity gain, part frequency
The gain of rate selectivity and Wave beam forming (beamforming, BF) gain.5G NR it is different from 4G LTE be on the other hand
Demodulated reference signal (demodulation reference signal, DMRS) is demodulated for PDCCH.DMRS for PDCCH
It sends together with expected PDCCH, but is sent not across entire control area.It is good that this needs sufficient amount of DMRS that could obtain
Good channel estimation.One good image designs the demand in terms of needing to balance these, i.e., from the various gains being previously mentioned
It is benefited, and generates good channel estimation to decode for PDCCH.
Since PDCCH is carried by one or more CCE, and CCE further includes multiple REG.It carries out being mapped with different sides
Method.For example, the REG of PDCCH can be distributed to utilize the time/frequency being similar in LTE across the time/frequency domain of control area
Rate diversity.But this may result in some channel estimating performance losses, this is because the DMRS quantity transmitted in REG has
Caused by limit.In order to accept or reject between diversity gain and channel estimating performance, CCE can be used as the list of the image for distribution
Member.
Referring to Fig. 4, different frequency position of each CCE in a distributed fashion on image to identical OFDM symbol is shown,
And the REG in CCE is mapped in example together.Such mapping has the advantage that CCE is used as the smallest unit map, because
REG (for example, as hi the example shown, CCE may include 4 REG) in this CCE is dispensed in continuous resource, this can be with
Facilitate channel estimation because more DMRS can be used.The CCE of distribution may benefit from frequency diversity gain.
Referring to Fig. 5, in order to further utilize the diversity gain in time/frequency and allow power ascension, as an example,
Each CCE can be mapped to different OFDM symbols.
Referring to Fig. 6, another design standard for needing to consider in 5G NR is reusing for channel estimation, for translating
The different candidate PDCCH of code is to reduce the decoded effort of entire PDCCH.Nido structure as shown in FIG. 6, shows different CCE
The candidate PDCCH of AL is aligned and shares the example of identical one group of resource.This will allow reusing with decoding not for channel estimation
Same candidate PDCCH.
Nido structure in Fig. 6 can be regarded as a kind of logical construction, and CCE can further image to physical resource
On.If the CCE image of the distribution described in the frequency direction in Fig. 4 and Fig. 5 can be used for this purpose, because it maintains this nest
It shape structure and supports reusing for channel estimation, while utilizing Wave beam forming and/or frequency diversity gain.However, for when
Between preferential REG/CCE image, this structure may need some modifications.The image of time priority is selected using local frequencies
Property gain, allow power ascension, and at the same time some DMRS burden can be saved and therefore improve PDCCH performance.This is because
If the resource for PDCCH is continuous in time, the DMRS in second or third OFDM symbol can be omitted, to be
PDCCH transmission provides more resource elements (resource element, RE).
Referring to Fig. 7, the example of the CCE/REG mapping of time priority is shown.In order to keep certain channel estimating performance
Level, can in unit map using CCE rather than REG has more because CCE includes more REG
DMRS is to provide good channel estimation.The quantity that example in Fig. 7 shows an at least CCE AL is equal to 1 (that is, CCE AL=
1), user apparatus includes all CCE with DMRS for PDCCH decoding.Referring to Fig. 8, the quantity of an at least CCE AL is big
In or be equal to 2 (that is, CCE AL >=2), then the CCE in the first OFDM symbol may include DMRS, and in the second OFDM symbol
CCE does not carry DMRS, therefore has more RE for PDCCH.The channel estimation of CCE on second symbol can be from
The channel estimation of the CCE completed on one symbol obtains, and provides the sufficiently small channel variation between symbols along time orientation.
Example in Fig. 5 shows the image in CCE AL >=2 candidate PDCCH the first OFDM symbol and the second OFDM symbol,
But it can be extended for more OFDM symbols.Fig. 9 is shown for four OFDM of CCE AL >=2 candidate PDCCH
The example of the CCE mapping of time priority on symbol.
Above-mentioned design can be extended to CCE along preferential (the being followed by frequency) image of time orientation to even-numbered
OFDM symbol (for example, 2 or 4), wherein the CCE in the OFDM symbol (for example, the first OFDM, the 3rd OFDM) of odd-numbered is carried
DMRS is to be used for channel estimation, and the CCE in the OFDM symbol (for example, the 2nd OFDM, the 4th OFDM) of even-numbered is not carried
DMRS.If the sum of the OFDM symbol in control area (control resource collection) is odd number (for example, 3), such mapping
May only it be limited in 2 a pair of OFDM symbols.For example, in first OFDM symbol and second OFDM symbol, or
In second OFDM symbol and third OFDM symbol.In another embodiment, second OFDM symbol is for this
First symbol of image, the CCE on second symbol carries DMRS, and the CCE on third symbol does not carry DMRS.Under
Generation node B (next generation node B, gNB) can configure those OFDM symbols for time priority image.
It should be mentioned that the column of the CCE along time orientation as shown in figs. 8 and 9 can be continuous in frequency
Or it is distributed in frequency.
As shown in Figure 10, in one embodiment, it can be distributed in frequency along the column of the CCE of time orientation, and
Therefore more frequency diversities can be brought.With reference to Figure 11, the nido structure of the image for time priority is shown.It needs
Bright, user apparatus includes CCE number 2,4,6,8 (i.e. CCE#2, CCE#4, CCE#6 and CCE#8), does not include and is used for CCE
AL >=2 candidate PDDCH DMRS.For the candidate PDCCH of CCE AL=1, user apparatus includes that can be used for channel estimation
With all CCE with DMRS of candidate PDCCH decoding.However, since the DMRS for these candidate PDCCH assumes difference,
Therefore, the channel estimation obtained by the decoding of the candidate PDCCH of CCE AL=1 is not used in CCE AL >=2 candidate
The decoding of PDCCH.
Using nido structure as shown in figure 11, as a part of design standard, the time as shown in Figure 9 and Figure 10 is excellent
There are some limitations in terms of CCE mapping for first CCE/REG image, and which CCE may include DMRS and which does not include
DMRS.Such limitation and is therefore led to carry out more consistent design for the difference candidate PDCCH of different CCE AL
Cause similar/consistent performance, such as the channel estimation when decoding different candidate PDCCH.Nido structure also allows channel to estimate
Meter is reused to be decoded with different CCE AL to different candidate PDCCH, so that the power for reducing user apparatus disappears
Consumption.
In an embodiment of the present invention, these REG set is a unit map of these candidate PDCCF, and processor
It is disposed for the REG image for gathering these REG to a continuous time and/or frequency resource, performance is estimated with stationary channel
And the various gains including frequency selectivity gain and time/frequency diversity gain.
It will be understood by those skilled in the art that described in the embodiment of the present invention and disclose each unit, calculation
Method and step can be realized with the combination of electronic hardware or computer software and electronic hardware.It is held with hardware or software
Capable function depends on the application conditions and design requirement of technical solution.Those of ordinary skill in the art can be specific for every kind
Realize function using in different ways, and these realizations should not be considered as it is beyond the scope of this invention.
Those of ordinary skill in the art will appreciate that because the substantial phase of the course of work of the system, device and unit
It together, therefore can be with reference to system, the course of work of device and unit in above-described embodiment.For ease of description and succinctly, this
A little courses of work will not be described in further detail.
It is understood that the systems, devices and methods that the embodiment of the present invention discloses, it can be real by another way
It is existing.Above-described embodiment is only exemplary.The division of above-mentioned unit is only based on the division of logic function, can be with when realization
There are other division modes.Multiple units or components can be combined or can be integrated into another system.Some features can also
It can be ignored or skip.On the other hand, shown or discussed intercouple, direct-coupling or be communicatively coupled can be by one
A little interfaces, device or unit operation can be electrical property, the indirect or traffic operation of mechanical or other forms.
Unit as the separation unit for explanation may or may not be physically separate.For display
Unit may or may not be physical unit, it can and it is in one place, or may be distributed over multiple networks
On unit.Some or all units can be used with purpose according to the embodiment.
In addition, each functional unit in each embodiment can integrate in one processing unit, and each unit list
It is solely physically present, or also can integrate in a processing unit with two or more units.
If SFU software functional unit is implemented and uses and sell as product, SFU software functional unit can be stored in
In the memory medium capable of reading of computer.Based on this understanding, the technical solution that the embodiment of the present invention proposes can be substantial
Or it is partly expressed in the form of software products.Alternatively, can be with to a part of the contributive technical solution of traditional technology
It is realized as the form of software product.Software product in computer is stored in a storage medium, including for calculating
Multiple orders of machine device (such as personal computer, server or network equipment), to execute whole or the portion of the present embodiment announcement
Step by step.Storage medium includes portable disc (universal serial bus disk, USB disk), action hard disk, read-only
Memory (read-only memory, ROM), random access memory (random access memory, RAM), floppy disk or energy
Enough store the other kinds of medium of program code.
Although having been combined, which is considered most realistic, describes the present invention with preferred embodiment it should be appreciated that
The present invention is not limited to revealed embodiments, but are intended to cover in the most broad explanation for not departing from protection scope of the present invention
Range in the case where various configurations.
Claims (27)
1. a kind of network node for wireless communication system, which is characterized in that the network node includes:
Processor, the processor are configured to distribute multiple resource element groups set of Physical Downlink Control Channel, the object
Reason down control channel has the candidate physical down control channel defined at least one control channel unit polymerization grade,
Multiple control channel units are assigned to user apparatus and including multiple resource element groups, wherein including one group of resource element groups
Resource element groups collection be combined into the map unit of the candidate physical down control channel, and the processor be configured to by
The resource element groups of the resource element groups set are mapped to continuous time and/or frequency resource；And
Transceiver, the transceiver are configured to that the Physical Downlink Control Channel is sent to the use in the resource of distribution
Family device.
2. network node according to claim 1, wherein the processor is configured to will in a manner of continuous or dispersion
The resource element groups compound mapping of the candidate physical down control channel is to frequency.
3. network node according to claim 1, wherein the processor is configured to the time in a continuous manner
Select the resource element groups compound mapping of Physical Downlink Control Channel to the time.
4. network node according to claim 1, wherein the mapping mode that the processor is configured to time priority
By the resource element groups compound mapping to multiple OFDM symbols, and the resource element groups are integrated into each money
It include the demodulated reference signal for the candidate physical down control channel in source element group.
5. network node according to claim 1, wherein the candidate physical down control channel is in nido structure
In, and big control channel unit polymerization grade includes the control channel unit of small control channel unit polymerization grade.
6. network node according to claim 1, wherein the mapping mode that the processor is configured to time priority
The resource element groups set is mapped, and the candidate physical down control channel is in nido structure.
7. network node according to claim 1, wherein the processor is configured to the mapping mode preferential with frequency
The resource element groups set is mapped, and the candidate physical down control channel is in nido structure.
8. a kind of user apparatus for wireless communication system, which is characterized in that the user apparatus includes:
Processor, the processor are configured to determine multiple resource element groups set at least one network node；With
And
Transceiver, the transceiver be configured in Physical Downlink Control Channel send the resource element groups set to
A few network node, wherein the resource element groups set is allocated for the Physical Downlink Control Channel, the physics
Down control channel has the candidate physical down control channel defined at least one control channel unit polymerization grade, more
A control channel unit is assigned to user apparatus and including multiple resource element groups, the resource element including one group of resource element groups
Element group collection is combined into the map unit of the candidate physical down control channel, and the processor is configured to the resource
The resource element groups of element group set are mapped to continuous time and/or frequency resource.
9. user apparatus according to claim 8, wherein the transceiver is configured in the resource of distribution will be described
Physical Downlink Control Channel receives the user apparatus, and the transceiver is configured to control in the physical down and believe
The resource element groups set is sent in road.
10. user apparatus according to claim 8, wherein the processor is configured in a manner of continuous or dispersion
By the resource element groups compound mapping of the candidate physical down control channel to frequency, or in a continuous manner by the time
Select the resource element groups compound mapping of Physical Downlink Control Channel to the time.
11. user apparatus according to claim 8, wherein the processor is configured to the mapping side of time priority
Formula by the resource element groups compound mapping to multiple OFDM symbols, and the resource element groups be integrated into it is each
It include the demodulated reference signal for the candidate physical down control channel in resource element groups.
12. user apparatus according to claim 8, wherein the candidate physical down control channel is in nido structure
In, and big control channel unit polymerization grade includes the control channel unit of small control channel unit polymerization grade.
13. user apparatus according to claim 8, wherein the processor is configured to the mapping side of time priority
Formula maps the resource element groups set, and the candidate physical down control channel is in nido structure.
14. user apparatus according to claim 8, wherein the processor is configured to the mapping side preferential with frequency
Formula maps the resource element groups set, and the candidate physical down control channel is in nido structure.
15. a kind of method of the network node for wireless communication system, which is characterized in that the described method includes:
Multiple resource element groups set of Physical Downlink Control Channel are distributed, the Physical Downlink Control Channel has at least
The candidate physical down control channel that one control channel unit polymerization grade defines, multiple control channel units are assigned to use
Family device and including multiple resource element groups, wherein the resource element groups collection including one group of resource element groups is combined into the candidate
The map unit of Physical Downlink Control Channel, and the method also includes by the resource element groups of the resource element groups set
It is mapped to continuous time and/or frequency resource；And
The Physical Downlink Control Channel is sent to the user apparatus in the resource of distribution.
16. according to the method for claim 15, wherein the method also includes: it will be described in a manner of continuous or dispersion
The resource element groups compound mapping of candidate physical down control channel is to frequency, or in a continuous manner by the candidate physical
The resource element groups compound mapping of down control channel is to the time.
17. according to the method for claim 15, wherein the method also includes: with the mapping mode of time priority by institute
Resource element groups compound mapping is stated to multiple OFDM symbols, the resource element groups are integrated into each resource element groups
On include demodulated reference signal for the candidate physical down control channel.
18. according to the method for claim 15, wherein the candidate physical down control channel is in nido structure,
And big control channel unit polymerization grade includes the control channel unit of small control channel unit polymerization grade.
19. according to the method for claim 15, wherein the method also includes: with the mapping mode mapping of time priority
The resource element groups set, the candidate physical down control channel are in nido structure.
20. according to the method for claim 15, wherein the method also includes: with the preferential mapping mode mapping of frequency
The resource element groups set, the candidate physical down control channel are in nido structure.
21. a kind of method of the user apparatus for wireless communication system, which is characterized in that the described method includes:
Determine the multiple resource element groups set for being used at least one network node；And
At least one network node is sent by the resource element groups set in Physical Downlink Control Channel, wherein described
Resource element groups set is allocated for the Physical Downlink Control Channel, and the Physical Downlink Control Channel has at least
The candidate physical down control channel that one control channel unit polymerization grade defines, multiple control channel units are assigned to use
Family device and including multiple resource element groups, the resource element groups collection including one group of resource element groups is combined under the candidate physical
The map unit of row control channel, and the method also includes being mapped to the resource element groups of the resource element groups set
Continuous time and/or frequency resource.
22. according to the method for claim 21, wherein the method also includes: by the physics in the resource of distribution
Down control channel receives the user apparatus, and the resource element groups are sent in the Physical Downlink Control Channel
Set.
23. according to the method for claim 21, wherein the method also includes: it will be described in a manner of continuous or dispersion
The resource element groups compound mapping of candidate physical down control channel is to frequency, or in a continuous manner by the candidate physical
The resource element groups compound mapping of down control channel is to the time.
24. according to the method for claim 21, wherein the method also includes: with the mapping mode of time priority by institute
Resource element groups compound mapping is stated to multiple OFDM symbols, the resource element groups are integrated into each resource element groups
On include demodulated reference signal for the candidate physical down control channel.
25. according to the method for claim 21, wherein the candidate physical down control channel is in nido structure,
And big control channel unit polymerization grade includes the control channel unit of small control channel unit polymerization grade.
26. according to the method for claim 21, wherein the method also includes: with the mapping mode mapping of time priority
The resource element groups set, the candidate physical down control channel are in nido structure.
27. according to the method for claim 21, wherein the method also includes: with the preferential mapping mode mapping of frequency
The resource element groups set, the candidate physical down control channel are in nido structure.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201762466065P | 2017-03-02 | 2017-03-02 | |
| US62/466,065 | 2017-03-02 | ||
| PCT/CN2018/075873 WO2018157719A1 (en) | 2017-03-02 | 2018-02-08 | Network node, user device, and method for wireless communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109691205A true CN109691205A (en) | 2019-04-26 |
Family
ID=63369749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880003401.9A Pending CN109691205A (en) | 2017-03-02 | 2018-02-08 | Network node, user apparatus and method for wireless communication system |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN109691205A (en) |
| TW (1) | TWI696398B (en) |
| WO (1) | WO2018157719A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113115448A (en) * | 2020-01-13 | 2021-07-13 | 维沃移动通信有限公司 | Method, device, equipment and medium for determining physical downlink control channel |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101938295A (en) * | 2009-06-30 | 2011-01-05 | 中兴通讯股份有限公司 | Method and device for transmitting channel measurement pilot frequency |
| CN102395206A (en) * | 2011-11-08 | 2012-03-28 | 电信科学技术研究院 | Transmission method and equipment for downside control information |
| US20140071915A1 (en) * | 2012-09-07 | 2014-03-13 | Samsung Electronics Co., Ltd. | Multiplexing resource element groups for control channel elements of control channels |
| US20180035411A1 (en) * | 2015-02-13 | 2018-02-01 | Datang Linktester Technology Co.,Ltd | Blind detection method and system for physical downlink control channel (pdcch) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102711253B (en) * | 2012-03-21 | 2015-02-18 | 电信科学技术研究院 | E-PDCCH (Enhanced-Physical Downlink Control Channel) resource mapping method and device therefor |
| US8995366B2 (en) * | 2012-03-23 | 2015-03-31 | Google Technology Holdings LLC | Radio link monitoring in a wireless communication device for a enhanced control channel |
| CN102665230B (en) * | 2012-04-23 | 2014-07-09 | 电信科学技术研究院 | Method and device for carrying out E-PDCCH transmission and blind test |
-
2018
- 2018-02-08 CN CN201880003401.9A patent/CN109691205A/en active Pending
- 2018-02-08 WO PCT/CN2018/075873 patent/WO2018157719A1/en active Application Filing
- 2018-03-01 TW TW107106865A patent/TWI696398B/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101938295A (en) * | 2009-06-30 | 2011-01-05 | 中兴通讯股份有限公司 | Method and device for transmitting channel measurement pilot frequency |
| CN102395206A (en) * | 2011-11-08 | 2012-03-28 | 电信科学技术研究院 | Transmission method and equipment for downside control information |
| US20140071915A1 (en) * | 2012-09-07 | 2014-03-13 | Samsung Electronics Co., Ltd. | Multiplexing resource element groups for control channel elements of control channels |
| US20180035411A1 (en) * | 2015-02-13 | 2018-02-01 | Datang Linktester Technology Co.,Ltd | Blind detection method and system for physical downlink control channel (pdcch) |
Non-Patent Citations (1)
| Title |
|---|
| GUANGDONG OPPO MOBILE TELECOM: "On NR PDCCH Structure and CCE-PRB mapping", 《3GPP TSG RAN WG1 MEETING #88 R1-1701950》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113115448A (en) * | 2020-01-13 | 2021-07-13 | 维沃移动通信有限公司 | Method, device, equipment and medium for determining physical downlink control channel |
| CN113115448B (en) * | 2020-01-13 | 2023-04-07 | 维沃移动通信有限公司 | Method, device, equipment and medium for determining physical downlink control channel |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI696398B (en) | 2020-06-11 |
| TW201834488A (en) | 2018-09-16 |
| WO2018157719A1 (en) | 2018-09-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20200205138A1 (en) | Method and apparatus for control resource set configuration for common control | |
| WO2018141272A1 (en) | Terminal, network device and communication method | |
| CN111279623B (en) | Beamforming enhancements via strategic resource utilization | |
| CN110880958B (en) | Method and device for reporting radio frequency parameters | |
| CN108112076B (en) | Method and device for configuring uplink signal | |
| KR20220156977A (en) | Method and apparatus for carrier aggregation in sidelink communication | |
| CN108377559A (en) | Multi-link communication method, terminal device and the network equipment based on wave beam | |
| CN109151922A (en) | Measurement method, measuring configuration method and relevant device | |
| CN108055700A (en) | A kind of method and device of transmitting uplink data | |
| US10396967B2 (en) | Method and apparatus for managing downlink to uplink interference in wireless communication system | |
| CN109150445A (en) | A kind of Downlink Control Information sends and receives method and apparatus | |
| EP3685604B1 (en) | Apparatus and method for measurement configuration in wireless communication system | |
| CN108023694A (en) | Uplink reference signals sending method, device, base station and user equipment | |
| CN111316570A (en) | Parallel scheduler architecture | |
| KR20230142720A (en) | Beam-based measurement and resource management techniques for wireless communication systems | |
| CN104244261A (en) | Method and terminals for eliminating crossed time slot interference | |
| CN112106417B (en) | Communication method and device | |
| CN109691205A (en) | Network node, user apparatus and method for wireless communication system | |
| US20240129909A1 (en) | Carrier aggregation grouping based on user location in 5g nr massive mimo beamforming network | |
| WO2023019464A1 (en) | Wireless communication method, first terminal device, and second terminal device | |
| US20230156634A1 (en) | Method and apparatus for mitigating interference in a wireless communication system | |
| WO2024011632A1 (en) | Resource configuration method and apparatus, device, and storage medium | |
| WO2024027629A1 (en) | Method for transmitting information, and related apparatus | |
| US20230327915A1 (en) | Channel estimation method and apparatus, communication device, and storage medium | |
| US20140153508A1 (en) | Method of coordinated multi-point transmission and reception |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190426 |
|
| RJ01 | Rejection of invention patent application after publication |