CN106533632A - Management method and management device of downlink control information, base station and terminal - Google Patents
Management method and management device of downlink control information, base station and terminal Download PDFInfo
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- CN106533632A CN106533632A CN201611243811.XA CN201611243811A CN106533632A CN 106533632 A CN106533632 A CN 106533632A CN 201611243811 A CN201611243811 A CN 201611243811A CN 106533632 A CN106533632 A CN 106533632A
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- control information
- downlink control
- module group
- terminal
- resource module
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
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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
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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
Abstract
The invention provides a management method and management device of downlink control information, a base station and a terminal. The method is used for the base station and comprises a step of configuring the first exclusive downlink control information and second exclusive downlink control information corresponding to the terminal scheduled by a target TTI, wherein the second exclusive downlink control information is carried in the frequency domain range of a resource module group corresponding to the terminal, the first exclusive downlink control information comprises the identification information of the resource module group corresponding to the terminal, and the time length of the target TTI is smaller than 1ms, and a step of sending the first exclusive downlink control information and the second downlink control information to the terminal. Through the technical scheme of the invention, the trying frequencies of the blind detection of the second exclusive downlink control information by the terminal can be effectively reduced, and the efficiency of demodulating the downlink control information is improved.
Description
Technical field
The present invention relates to communication technical field, in particular under a kind of management method of Downlink Control Information, one kind
The managing device of row control information, a kind of base station and a kind of terminal.
Background technology
In current LTE (Long Term Evolution, Long Term Evolution) system, base station to terminal send it is descending
Deta bearer is in PDSCH (Physical Downlink Shared Channel, physical layer descending shared channel), descending with this
Data it is corresponding also have with the PDSCH at same TTI (Transmission Time Interval, transmission time interval)
Send on the PDCCH (Physical Downlink Control Channel, physical layer descending control channel) of middle transmission
DCI (Downlink Control Information, Downlink Control Information).Under DCI is used for indicating that the terminal demodulation is corresponding
Various information needed for row data, such as RB (Resource Block, resource module), the modulation for using residing for downlink data
Coded format, redundancy versions etc..Terminal receives PDCCH first and attempts demodulation, when correctly demodulating the DCI information in PDCCH
Afterwards, using the data message of the PDSCH in the same TTI of the DCI information demodulation reception.
But in some cases, such as channel burst interference etc., in fact it could happen that the situation that terminal correctly can not be demodulated.If
Terminal fails correctly to demodulate the downlink data information of corresponding PDSCH after it demodulate DCI, then can be to base station feedback NACK
(Negative Acknowledgment, negative acknowledge), if correct demodulate, terminal is to base station feedback ACK, if terminal can not
DCI information (corresponding, terminal cannot also demodulate PDSCH) in correct demodulation PDCCH, then terminal will be to base station feedback DTX
(Discontinuous Transmission, uninterrupted to send).If base station receives NACK, learn that the data message of terminal connects
Mistake is received, and new redundancy versions typically can be used in the re-transmission of next suitable moment initiation downlink data, re-transmission.If base
Station receives DTX, learns that terminal D CI receives mistake, then can send data again in next proper timing.When data are passed again, can
Can be to the enhanced process of PDCCH channel powers, to ensure the demodulation performance of PDCCH, in addition, the redundancy versions for passing data again can
Can be identical with the redundancy versions of last data transfer, without the need for the redundancy versions for more renewing.
With the development of mobile Internet, the applied business for meeting various specific functions in a large number has been emerged.Some of them
Business is relatively low to data delay requirement, for example receiving and dispatching mail, downloads movies；But separately there are some business to have strictly data delay
Requirement, such as network on-line plays, rushes to purchase, robbing red packet etc., and this kind of business is usually required the time delay of user data and to the greatest extent may be used
Can it is short.In the lte networks, transmission time interval TTI is the important indicator for affecting user data delay.Current LTE system
Using TTI (hereinafter referred to as legacy TTI) be 1ms, a namely subframe, transmitting terminal send a data block, connect per 1ms
Receiving end can receive a data block per 1ms.
In 3GPP RAN#69 plenary sessions to being set up the project using the problem of shorter TTI in the lte networks, research is used
The feasibility and possible beneficial effect of the TTI (short-TTI, is hereinafter sTTI, such as 0.5ms etc.) of shorter duration
Really.The reduction that have studied TTI durations for having some documents for example [R1-160942] [R1-160930] quantitative at present is to LTE data
The impact of time delay, analysis show, using sTTI be not merely base station, terminal transmission time interval shorten, accordingly, with this
Send the corresponding data processing time in interval can also decrease, such as data code modulation and data demodulation time all can
Reduce with the reduction of data block size.In the LTE network of later release it is possible that using legacy TTI with
The situation that two kinds of UE (User Equipment, user terminal) for sending interval of sTTI coexist.And draw in LTE system Radio Resource
On point, it is also possible to a part of frequency resource occur and use legacy TTI, and another part frequency resource uses sTTI.One
Multiple sTTI are may included in legacy TTI durations.
In the lte networks, for flexible adaptive scheduling, each legacy TTI can have for the descending of the TTI
Control information.Downlink Control Information is carried on front n OFDM (the Orthogonal Frequency of whole system bandwidth
Division Multiplexing, OFDM) (n is 1～4, is had according to specific system configuration value in symbol
Institute is different), include common downlink control information and the exclusive descending controls of UE for being respectively directed to each UE for all UE of cell
Information processed.Wherein, common control information mainly includes indicating that control channel resource occupies the information of OFDM symbol quantity and (is carried on
PCFICH (Physical Control Format Indicator Channel, Physical Control Format Indicator Channel)), for
The HARQ ACK/NACK feedback informations of upstream data (are carried on PHICH (Physical Hybrid ARQ Indicator
Channel, physical mixed automatic re-transmission indicating channel)), paging, accidental access response, broadcast message etc. (are carried on PDCCH letters
Road, is mapped in public search space) related control information.The exclusive Downlink Control Information of UE time-frequency money mainly including UE distribution
Source, modulating-coding form, HARQ (Hybrid Automatic Repeat reQuest, mixed automatic retransfer agreement) process number,
Ascending frequency-hopping, uplink power control information etc. (are carried on PDCCH channels, be typically mapped in the exclusive search spaces of UE).Using
In the resource of sTTI, if being also adopted by designing with legacy TTI identicals down control channel, i.e., each sTTI has each
Independent Downlink Control Information, comprising common downlink control information and the exclusive Downlink Control Information of UE.Then in the identical time period
The Downlink Control Information resource overhead of interior sTTI is by many times that are legacy TTI (depending on the duration of legacy TTI and sTTI
Multiple proportion).Excessive Downlink Control Information resource overhead can affect the data transmission efficiency of sTTI, it is difficult to play sTTI reductions
The effect of time delay.
In correlation technique, for the design solved the above problems using two-layer control information, the method is by the UE using sTTI
Exclusive control information be divided at a slow speed with quick two levels, as shown in figure 1, control information is carried on the descending controls of legacy at a slow speed
In channel resource processed, front several OFDM symbols of each sTTI are set to sPDCCH channel resources, are somebody's turn to do for carrying to use
The exclusive fast downlink control information of the UE of sTTI resources.Needed according to control information and quick control at a slow speed using the UE of sTTI
The actual Downlink Control Information of information acquisition.As quick control information need to be updated only in each sTTI, reduce in sTTI
Control information expense, while and meeting the dispatching flexibility in sTTI.
In order to obtain downlink control message, UE needs to advise according to set search in search space by way of blind check
Then may carry control information running time-frequency resource on one by one search and blind check, until detect this terminal control information or
Till exhaustive search space.Downlink Control Information is scanned in LTE system at present and the regular visible 3GPP of blind check is marked
In quasi- TS 36.213.In the case where search rule is set, it is clear that search space is less, object control information institute to be demodulated
The blind check number of times for needing is fewer.And in the design of above-mentioned double-deck control message, terminal is required for by blind in each sTTI
The mode of inspection demodulates quick control information, if not reducing demodulating the blind check number of times needed for quick control information, can affect control
The demodulation speed of information, in this regard, there is presently no effective solution.
The content of the invention
The present invention is based at least one above-mentioned technical problem, it is proposed that a kind of manager of new Downlink Control Information
Case, can effectively reduce the number of attempt of the second exclusive Downlink Control Information of terminal blind check, improve demodulation Downlink Control Information
Efficiency.
In view of this, the present invention proposes a kind of management method of Downlink Control Information, for base station, including：Configuration mesh
The corresponding first exclusive Downlink Control Information of terminal and the second exclusive Downlink Control Information of mark TTI scheduling, wherein, described second
Exclusive Downlink Control Information is carried in the frequency domain of the corresponding resource module group of the terminal, the first exclusive descending control
Information processed includes the identification information of the corresponding resource module group of the terminal, and the duration of target TTI is less than 1ms；To institute
State terminal and send the first exclusive Downlink Control Information and second Downlink Control Information.
In the technical scheme, by configuring the corresponding first exclusive descending control of terminal that target TTI (i.e. sTTI) is dispatched
Information processed and the second exclusive Downlink Control Information, and the first exclusive Downlink Control Information and the second exclusive descending control is sent to terminal
Information processed, the second exclusive Downlink Control Information are carried in the frequency domain of the corresponding resource module group of terminal, under first is exclusive
Row control information includes the identification information of the corresponding resource module group of terminal, and the second exclusive Downlink Control Information is only carried on end
In the frequency domain of the resource module group indicated by the first exclusive Downlink Control Information at end, rather than shared by whole sTTI
Frequency domain in, as the frequency domain of resource module group is less, therefore terminal search space very little when blind check is carried out is
The follow-up number of attempt for reducing terminal the second exclusive Downlink Control Information of blind check, quickly demodulates control information and provides premise guarantor
Barrier.
In above-mentioned technical proposal, it is preferable that also include：Send for representing the resource module group to the terminal
The indication signaling of the incidence relation between the frequency domain of identification information and the resource module group.
In the technical scheme, by sending identification information and resource module group for representing resource module group to terminal
Frequency domain between incidence relation indication signaling, be search space when subsequent terminal can determine blind check based on indication signaling
Premise is provided.
In any of the above-described technical scheme, it is preferable that the indication signaling includes RRC signaling.
In the technical scheme, can be referred to using RRC (Radio Resource Control, wireless heterogeneous networks) signalings
Show the incidence relation between the identification information of resource module group and the frequency domain of resource module group.
According to the second aspect of the invention, it is proposed that a kind of management method of Downlink Control Information, for terminal, including：
Dispatch in the terminal procedures in target TTI, the first exclusive Downlink Control Information and second that reception base station sends is exclusive descending
Control information, wherein, the second exclusive Downlink Control Information is carried on the frequency domain model of the corresponding resource module group of the terminal
In enclosing, the first exclusive Downlink Control Information includes the identification information of the corresponding resource module group of the terminal, the mesh
The duration of mark TTI is less than 1ms；According to the corresponding identification information of the resource module group, the frequency domain of the resource module group is determined
Scope；In the frequency domain of the resource module group, the second exclusive Downlink Control Information described in blind check.
In the technical scheme, during target TTI dispatch terminal, first by receiving base station transmission is exclusive descending
Control information and the second exclusive Downlink Control Information, the second exclusive Downlink Control Information are carried on the corresponding resource module group of terminal
Frequency domain in, the first exclusive Downlink Control Information includes the identification information of the corresponding resource module group of terminal, according to money
The corresponding identification information of source module group, determines the frequency domain of resource module group, and in the frequency domain of resource module group, it is blind
The second exclusive Downlink Control Information is examined, the second exclusive Downlink Control Information is only carried on the first exclusive Downlink Control Information of terminal
In the frequency domain of indicated resource module group, rather than in the frequency domain shared by whole sTTI, due to resource mould
The frequency domain of block group is less, therefore terminal search space very little when blind check is carried out, reduce terminal blind check second it is exclusive under
The number of attempt of row control information, improves the efficiency for demodulating control information, advantageously reduces overall data processing time delay.
In above-mentioned technical proposal, it is preferable that described according to the corresponding identification information of the resource module group, it is determined that described
The step of frequency domain of resource module group, specifically include：According to identification information and the institute of the resource module group of pre-stored
The incidence relation between the frequency domain of resource module group is stated, the frequency domain of the resource module group is determined；Or receive the base
Stand send for representing associating between the identification information of the resource module group and the frequency domain of the resource module group
The indication signaling of system, and the frequency domain of the resource module group is determined according to the indication signaling.
According to the third aspect of the invention we, it is proposed that a kind of managing device of Downlink Control Information, for base station, including：
Dispensing unit, for configuring the corresponding first exclusive Downlink Control Information of terminal and the second exclusive descending control of the scheduling of target TTI
Information processed, wherein, the second exclusive Downlink Control Information is carried on the frequency domain of the corresponding resource module group of the terminal
Interior, the first exclusive Downlink Control Information includes the identification information of the corresponding resource module group of the terminal, the target
The duration of TTI is less than 1ms；First transmitting element, for sending the first exclusive Downlink Control Information and institute to the terminal
State the second Downlink Control Information.
In the technical scheme, by configuring the corresponding first exclusive descending control of terminal that target TTI (i.e. sTTI) is dispatched
Information processed and the second exclusive Downlink Control Information, and the first exclusive Downlink Control Information and the second exclusive descending control is sent to terminal
Information processed, the second exclusive Downlink Control Information are carried in the frequency domain of the corresponding resource module group of terminal, under first is exclusive
Row control information includes the identification information of the corresponding resource module group of terminal, and the second exclusive Downlink Control Information is only carried on end
In the frequency domain of the resource module group indicated by the first exclusive Downlink Control Information at end, rather than shared by whole sTTI
Frequency domain in, as the frequency domain of resource module group is less, therefore terminal search space very little when blind check is carried out is
The follow-up number of attempt for reducing terminal the second exclusive Downlink Control Information of blind check, quickly demodulates control information and provides premise guarantor
Barrier.
In above-mentioned technical proposal, it is preferable that also include：Second transmitting element, for sending for table to the terminal
Show the indication signaling of the incidence relation between the identification information of the resource module group and the frequency domain of the resource module group.
In the technical scheme, by sending identification information and resource module group for representing resource module group to terminal
Frequency domain between incidence relation indication signaling, be search space when subsequent terminal can determine blind check based on indication signaling
Premise is provided.
In any of the above-described technical scheme, it is preferable that the indication signaling includes RRC signaling.
In the technical scheme, can be referred to using RRC (Radio Resource Control, wireless heterogeneous networks) signalings
Show the incidence relation between the identification information of resource module group and the frequency domain of resource module group.
According to the fourth aspect of the invention, it is proposed that a kind of managing device of Downlink Control Information, for terminal, including：
Receiving unit, for dispatching in the terminal procedures in target TTI, receive the first exclusive Downlink Control Information that base station sends and
Second exclusive Downlink Control Information, wherein, the second exclusive Downlink Control Information is carried on the corresponding resource mould of the terminal
In the frequency domain of block group, the first exclusive Downlink Control Information includes the mark of the corresponding resource module group of the terminal
Information, the duration of target TTI are less than 1ms；Determining unit, for according to the corresponding identification information of the resource module group,
Determine the frequency domain of the resource module group；Processing unit, in the frequency domain of the resource module group, blind check institute
State the second exclusive Downlink Control Information.
In the technical scheme, during target TTI dispatch terminal, first by receiving base station transmission is exclusive descending
Control information and the second exclusive Downlink Control Information, the second exclusive Downlink Control Information are carried on the corresponding resource module group of terminal
Frequency domain in, the first exclusive Downlink Control Information includes the identification information of the corresponding resource module group of terminal, according to money
The corresponding identification information of source module group, determines the frequency domain of resource module group, and in the frequency domain of resource module group, it is blind
The second exclusive Downlink Control Information is examined, the second exclusive Downlink Control Information is only carried on the first exclusive Downlink Control Information of terminal
In the frequency domain of indicated resource module group, rather than in the frequency domain shared by whole sTTI, due to resource mould
The frequency domain of block group is less, therefore terminal search space very little when blind check is carried out, reduce terminal blind check second it is exclusive under
The number of attempt of row control information, improves the efficiency for demodulating control information, advantageously reduces overall data processing time delay.
In above-mentioned technical proposal, it is preferable that the determining unit specifically for：According to the resource module of pre-stored
Incidence relation between the frequency domain of the identification information of group and the resource module group, determines the frequency domain model of the resource module group
Enclose；Or receive the frequency domain for representing the identification information of the resource module group and the resource module group that the base station sends
The indication signaling of the incidence relation between scope, and the frequency domain of the resource module group is determined according to the indication signaling.
According to the fifth aspect of the invention, it is proposed that a kind of base station, including：As any one of above-mentioned technical scheme
The managing device of Downlink Control Information.
According to the sixth aspect of the invention, it is proposed that a kind of terminal, including：As any one of above-mentioned technical scheme
The managing device of Downlink Control Information.
By above technical scheme, the number of attempt of the second exclusive Downlink Control Information of terminal blind check can be effectively reduced,
Improve the efficiency of demodulation Downlink Control Information.
Description of the drawings
Fig. 1 shows the schematic diagram of the resource allocation of the down control channel in correlation technique；
Fig. 2 shows the schematic flow diagram of the management method of Downlink Control Information according to an embodiment of the invention；
Fig. 3 shows the exemplary flow of the management method of Downlink Control Information according to another embodiment of the invention
Figure；
Fig. 4 shows the schematic block diagram of the managing device of Downlink Control Information according to an embodiment of the invention；
Fig. 5 shows the schematic block diagram of the managing device of Downlink Control Information according to another embodiment of the invention；
Fig. 6 shows the schematic block diagram of base station according to an embodiment of the invention；
Fig. 7 shows the schematic block diagram of terminal according to an embodiment of the invention；
Fig. 8 shows the schematic diagram of the resource allocation of down control channel according to an embodiment of the invention.
Specific embodiment
It is in order to be more clearly understood that the above objects, features and advantages of the present invention, below in conjunction with the accompanying drawings and concrete real
Apply mode to be further described in detail the present invention.It should be noted that in the case where not conflicting, the enforcement of the application
Feature in example and embodiment can be mutually combined.
Many details are elaborated in the following description in order to fully understand the present invention, but, the present invention may be used also
Implemented with being different from other modes described here using other, therefore, protection scope of the present invention is not by described below
Specific embodiment restriction.
Fig. 2 shows the schematic flow diagram of the management method of Downlink Control Information according to an embodiment of the invention.
As shown in Fig. 2 the management method of Downlink Control Information according to an embodiment of the invention, for base station, bag
Include：
Step 202, the corresponding first exclusive Downlink Control Information of terminal and second that configuration target TTI is dispatched are exclusive descending
Control information, wherein, the second exclusive Downlink Control Information is carried on the frequency domain model of the corresponding resource module group of the terminal
In enclosing, the first exclusive Downlink Control Information includes the identification information of the corresponding resource module group of the terminal, the mesh
The duration of mark TTI is less than 1ms.
Step 204, sends the first exclusive Downlink Control Information and second Downlink Control Information to the terminal.
In the technical scheme, by configuring the corresponding first exclusive descending control of terminal that target TTI (i.e. sTTI) is dispatched
Information processed and the second exclusive Downlink Control Information, and the first exclusive Downlink Control Information and the second exclusive descending control is sent to terminal
Information processed, the second exclusive Downlink Control Information are carried in the frequency domain of the corresponding resource module group of terminal, under first is exclusive
Row control information includes the identification information of the corresponding resource module group of terminal, and the second exclusive Downlink Control Information is only carried on end
In the frequency domain of the resource module group indicated by the first exclusive Downlink Control Information at end, rather than shared by whole sTTI
Frequency domain in, as the frequency domain of resource module group is less, therefore terminal search space very little when blind check is carried out is
The follow-up number of attempt for reducing terminal the second exclusive Downlink Control Information of blind check, quickly demodulates control information and provides premise guarantor
Barrier.
In above-mentioned technical proposal, it is preferable that also include：Send for representing the resource module group to the terminal
The indication signaling of the incidence relation between the frequency domain of identification information and the resource module group.
In the technical scheme, by sending identification information and resource module group for representing resource module group to terminal
Frequency domain between incidence relation indication signaling, be search space when subsequent terminal can determine blind check based on indication signaling
Premise is provided.
In any of the above-described technical scheme, it is preferable that the indication signaling includes RRC signaling.
In the technical scheme, can be referred to using RRC (Radio Resource Control, wireless heterogeneous networks) signalings
Show the incidence relation between the identification information of resource module group and the frequency domain of resource module group.
Specifically, system needs to distribute to the RB resources that sTTI (i.e. first kind TTI) uses first and is divided into several
RB groups, the division of RB groups can be arranged in standard, such as the different RB groups of different system bandwidth correspondences are divided, RB groups
The corresponding relation of frequency domain position of index and the RB groups of reality directly can be inquired about by standard agreement；Can also be that base station uses RRC
Signaling etc. notifies the division of RB groups to terminal.Thus terminal can learn the index of RB groups and the frequency domain position of actual RB groups
Corresponding relation.
The RB group indexes for distributing to the UE are notified to give the UE by base station by the first exclusive Downlink Control Information of UE.UE
The search that the second exclusive Downlink Control Information can be obtained after the first exclusive Downlink Control Information obtains the index of RB groups is empty
Between.UE carries out the second exclusive Downlink Control Information search according to set search rule in the search space, you can blind check goes out
The second exclusive Downlink Control Information of this terminal.As shown in figure 8, carrying UE1's in legacy down control channel resources 802
The first exclusive Downlink Control Information B1 of the first exclusive Downlink Control Information A1 and UE2, is that the RB groups of UE1 distribution are RB groups n1,
RB groups for UE2 distribution are RB groups n2.Carry in the sTTI down control channel resources 804A of UE1 UE1 second it is exclusive under
Row control information A2, carries RB resource informations A3 of UE1, the sTTI of UE2 in sTTI downstream data channel resources 806A of UE1
The second exclusive Downlink Control Information B2 of UE2, the sTTI downstream data channels of UE2 is carried in down control channel resources 804B
RB resource informations B3 of UE2 are carried in resource 806B.By taking UE1 as an example, UE1 is in legacy down control channel resources 802
The corresponding first exclusive Downlink Control Information A1 of detection UE1, and learn that the RB groups distributed for UE1 are RB groups n1, UE1 only need to be in RB
The second exclusive Downlink Control Information A2 of blind check in the search space of group n1.During due to the second exclusive Downlink Control Information of blind check
Search space only in the frequency domain of RB groups n1, compared with the blind check taken in sTTI in frequency domain, can pole
The earth reduces blind check number of times.
Fig. 3 shows the exemplary flow of the management method of Downlink Control Information according to another embodiment of the invention
Figure.
As shown in figure 3, the management method of Downlink Control Information according to another embodiment of the invention, for terminal,
Including：
Step 302, dispatches in the terminal procedures in target TTI, receives the first exclusive descending control letter that base station sends
Breath and the second exclusive Downlink Control Information, wherein, the second exclusive Downlink Control Information is carried on the corresponding money of the terminal
In the frequency domain of source module group, the first exclusive Downlink Control Information includes the corresponding resource module group of the terminal
Identification information, the duration of target TTI are less than 1ms.
Step 304, according to the corresponding identification information of the resource module group, determines the frequency domain model of the resource module group
Enclose.
Step 306, in the frequency domain of the resource module group, the second exclusive Downlink Control Information described in blind check.
In the technical scheme, during target TTI dispatch terminal, first by receiving base station transmission is exclusive descending
Control information and the second exclusive Downlink Control Information, the second exclusive Downlink Control Information are carried on the corresponding resource module group of terminal
Frequency domain in, the first exclusive Downlink Control Information includes the identification information of the corresponding resource module group of terminal, according to money
The corresponding identification information of source module group, determines the frequency domain of resource module group, and in the frequency domain of resource module group, it is blind
The second exclusive Downlink Control Information is examined, the second exclusive Downlink Control Information is only carried on the first exclusive Downlink Control Information of terminal
In the frequency domain of indicated resource module group, rather than in the frequency domain shared by whole sTTI, due to resource mould
The frequency domain of block group is less, therefore terminal search space very little when blind check is carried out, reduce terminal blind check second it is exclusive under
The number of attempt of row control information, improves the efficiency for demodulating control information, advantageously reduces overall data processing time delay.
In above-mentioned technical proposal, it is preferable that described according to the corresponding identification information of the resource module group, it is determined that described
The step of frequency domain of resource module group, specifically include：According to identification information and the institute of the resource module group of pre-stored
The incidence relation between the frequency domain of resource module group is stated, the frequency domain of the resource module group is determined；Or receive the base
Stand send for representing associating between the identification information of the resource module group and the frequency domain of the resource module group
The indication signaling of system, and the frequency domain of the resource module group is determined according to the indication signaling.
Fig. 4 shows the schematic block diagram of the managing device of Downlink Control Information according to an embodiment of the invention.
As shown in figure 4, the managing device 400 of Downlink Control Information according to an embodiment of the invention, for base station,
Including：Dispensing unit 402 and the first transmitting element 404.
Wherein, dispensing unit 402 be used for configure target TTI scheduling the corresponding first exclusive Downlink Control Information of terminal and
Second exclusive Downlink Control Information, wherein, the second exclusive Downlink Control Information is carried on the corresponding resource mould of the terminal
In the frequency domain of block group, the first exclusive Downlink Control Information includes the mark of the corresponding resource module group of the terminal
Information, the duration of target TTI are less than 1ms；First transmitting element 404 for the terminal send it is described first it is exclusive under
Row control information and second Downlink Control Information.
In the technical scheme, by configuring the corresponding first exclusive descending control of terminal that target TTI (i.e. sTTI) is dispatched
Information processed and the second exclusive Downlink Control Information, and the first exclusive Downlink Control Information and the second exclusive descending control is sent to terminal
Information processed, the second exclusive Downlink Control Information are carried in the frequency domain of the corresponding resource module group of terminal, under first is exclusive
Row control information includes the identification information of the corresponding resource module group of terminal, and the second exclusive Downlink Control Information is only carried on end
In the frequency domain of the resource module group indicated by the first exclusive Downlink Control Information at end, rather than shared by whole sTTI
Frequency domain in, as the frequency domain of resource module group is less, therefore terminal search space very little when blind check is carried out is
The follow-up number of attempt for reducing terminal the second exclusive Downlink Control Information of blind check, quickly demodulates control information and provides premise guarantor
Barrier.
In above-mentioned technical proposal, it is preferable that also include：Second transmitting element 406, is used for for sending to the terminal
Represent the indication signaling of the incidence relation between the identification information of the resource module group and the frequency domain of the resource module group.
In the technical scheme, by sending identification information and resource module group for representing resource module group to terminal
Frequency domain between incidence relation indication signaling, be search space when subsequent terminal can determine blind check based on indication signaling
Premise is provided.
In any of the above-described technical scheme, it is preferable that the indication signaling includes RRC signaling.
In the technical scheme, can be referred to using RRC (Radio Resource Control, wireless heterogeneous networks) signalings
Show the incidence relation between the identification information of resource module group and the frequency domain of resource module group.
Fig. 5 shows the schematic block diagram of the managing device of Downlink Control Information according to another embodiment of the invention.
As shown in figure 5, the managing device 500 of Downlink Control Information according to another embodiment of the invention, for end
End, including：Receiving unit 502, determining unit 504 and processing unit 506.
Wherein, for dispatching in the terminal procedures in target TTI, receive base station transmission first is special for receiving unit 502
Category Downlink Control Information and the second exclusive Downlink Control Information, wherein, the second exclusive Downlink Control Information is carried on described
In the frequency domain of the corresponding resource module group of terminal, the first exclusive Downlink Control Information includes that the terminal is corresponding
The identification information of resource module group, the duration of target TTI are less than 1ms；Determining unit 504 is for according to the resource module
The corresponding identification information of group, determines the frequency domain of the resource module group；Processing unit 506 is in the resource module group
Frequency domain in, the second exclusive Downlink Control Information described in blind check.
In the technical scheme, during target TTI dispatch terminal, first by receiving base station transmission is exclusive descending
Control information and the second exclusive Downlink Control Information, the second exclusive Downlink Control Information are carried on the corresponding resource module group of terminal
Frequency domain in, the first exclusive Downlink Control Information includes the identification information of the corresponding resource module group of terminal, according to money
The corresponding identification information of source module group, determines the frequency domain of resource module group, and in the frequency domain of resource module group, it is blind
The second exclusive Downlink Control Information is examined, the second exclusive Downlink Control Information is only carried on the first exclusive Downlink Control Information of terminal
In the frequency domain of indicated resource module group, rather than in the frequency domain shared by whole sTTI, due to resource mould
The frequency domain of block group is less, therefore terminal search space very little when blind check is carried out, reduce terminal blind check second it is exclusive under
The number of attempt of row control information, improves the efficiency for demodulating control information, advantageously reduces overall data processing time delay.
In above-mentioned technical proposal, it is preferable that the determining unit 504 specifically for：According to the resource of pre-stored
Incidence relation between the frequency domain of the identification information of module group and the resource module group, determines the frequency of the resource module group
Domain scope；Or receive that the base station sends for representing the identification information of the resource module group with the resource module group
The indication signaling of the incidence relation between frequency domain, and the frequency domain model of the resource module group is determined according to the indication signaling
Enclose.
Fig. 6 shows the schematic block diagram of base station according to an embodiment of the invention.
As shown in fig. 6, base station 600 according to an embodiment of the invention, including：Downlink Control Information as shown in Figure 4
Managing device 400.
Fig. 7 shows the schematic block diagram of terminal according to an embodiment of the invention.
As shown in fig. 7, terminal 700 according to an embodiment of the invention, including：Downlink Control Information as shown in Figure 5
Managing device 500.
Technical scheme is described in detail above in association with accompanying drawing, the present invention proposes a kind of new descending control letter
The Managed Solution of breath, can effectively reduce the number of attempt of the second exclusive Downlink Control Information of terminal blind check, improve demodulation descending
The efficiency of control information.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area
For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (12)
1. a kind of management method of Downlink Control Information, for base station, it is characterised in that include：
The corresponding first exclusive Downlink Control Information of terminal and the second exclusive Downlink Control Information of configuration target TTI scheduling, its
In, the second exclusive Downlink Control Information is carried in the frequency domain of the corresponding resource module group of the terminal, and described
One exclusive Downlink Control Information includes the identification information of the corresponding resource module group of the terminal, the duration of target TTI
Less than 1ms；
The first exclusive Downlink Control Information and second Downlink Control Information are sent to the terminal.
2. the management method of Downlink Control Information according to claim 1, it is characterised in that also include：
Send for representing the identification information of the resource module group and the frequency domain of the resource module group to the terminal
Between incidence relation indication signaling.
3. the management method of Downlink Control Information according to claim 2, it is characterised in that the indication signaling includes
RRC signaling.
4. a kind of management method of Downlink Control Information, for terminal, it is characterised in that include：
Dispatch in the terminal procedures in target TTI, the first exclusive Downlink Control Information and second that reception base station sends is exclusive
Downlink Control Information, wherein, the second exclusive Downlink Control Information is carried on the frequency of the corresponding resource module group of the terminal
In the range of domain, the first exclusive Downlink Control Information includes the identification information of the corresponding resource module group of the terminal, institute
The duration for stating target TTI is less than 1ms；
According to the corresponding identification information of the resource module group, the frequency domain of the resource module group is determined；
In the frequency domain of the resource module group, the second exclusive Downlink Control Information described in blind check.
5. the management method of Downlink Control Information according to claim 4, it is characterised in that described according to the resource mould
The corresponding identification information of block group, the step of determine the frequency domain of the resource module group, specifically includes：
According to the identification information of the resource module group and the associating between the frequency domain of the resource module group of pre-stored
System, determines the frequency domain of the resource module group；Or
Receive the frequency domain for representing the identification information of the resource module group and the resource module group that the base station sends
The indication signaling of the incidence relation between scope, and the frequency domain of the resource module group is determined according to the indication signaling.
6. a kind of managing device of Downlink Control Information, for base station, it is characterised in that include：
Dispensing unit, under the corresponding first exclusive Downlink Control Information of terminal and second for configuring the scheduling of target TTI is exclusive
Row control information, wherein, the second exclusive Downlink Control Information is carried on the frequency domain of the corresponding resource module group of the terminal
In the range of, the first exclusive Downlink Control Information includes the identification information of the corresponding resource module group of the terminal, described
The duration of target TTI is less than 1ms；
First transmitting element, for sending the first exclusive Downlink Control Information and the second descending control to the terminal
Information.
7. the managing device of Downlink Control Information according to claim 6, it is characterised in that also include：
Second transmitting element, for sending for the identification information for representing the resource module group and the resource to the terminal
The indication signaling of the incidence relation between the frequency domain of module group.
8. the managing device of Downlink Control Information according to claim 7, it is characterised in that the indication signaling includes
RRC signaling.
9. a kind of managing device of Downlink Control Information, for terminal, it is characterised in that include：
Receiving unit, for dispatching in the terminal procedures in target TTI, receives the first exclusive descending control letter that base station sends
Breath and the second exclusive Downlink Control Information, wherein, the second exclusive Downlink Control Information is carried on the corresponding money of the terminal
In the frequency domain of source module group, the first exclusive Downlink Control Information includes the corresponding resource module group of the terminal
Identification information, the duration of target TTI are less than 1ms；
Determining unit, for according to the corresponding identification information of the resource module group, determining the frequency domain model of the resource module group
Enclose；
Processing unit, in the frequency domain of the resource module group, the second exclusive Downlink Control Information described in blind check.
10. the managing device of Downlink Control Information according to claim 9, it is characterised in that the determining unit is concrete
For：
According to the identification information of the resource module group and the associating between the frequency domain of the resource module group of pre-stored
System, determines the frequency domain of the resource module group；Or
Receive the frequency domain for representing the identification information of the resource module group and the resource module group that the base station sends
The indication signaling of the incidence relation between scope, and the frequency domain of the resource module group is determined according to the indication signaling.
11. a kind of base stations, it is characterised in that include：The pipe of the Downlink Control Information as any one of claim 6 to 8
Reason device.
12. a kind of terminals, it is characterised in that include：The managing device of the Downlink Control Information as described in claim 9 or 10.
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| CN109997393A (en) * | 2017-08-11 | 2019-07-09 | 华为技术有限公司 | Equipment communication means and device |
| CN110463121A (en) * | 2017-03-24 | 2019-11-15 | 摩托罗拉移动有限责任公司 | Method and apparatus for receiving downlink transmission |
| CN110870362A (en) * | 2017-05-02 | 2020-03-06 | 株式会社Ntt都科摩 | User terminal and wireless communication method |
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| CN110463121A (en) * | 2017-03-24 | 2019-11-15 | 摩托罗拉移动有限责任公司 | Method and apparatus for receiving downlink transmission |
| CN110870362A (en) * | 2017-05-02 | 2020-03-06 | 株式会社Ntt都科摩 | User terminal and wireless communication method |
| CN110870362B (en) * | 2017-05-02 | 2023-09-12 | 株式会社Ntt都科摩 | Terminal, system and wireless communication method |
| WO2019029693A1 (en) * | 2017-08-11 | 2019-02-14 | 华为技术有限公司 | Data transmission method, network device and terminal device |
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|---|---|
| CN106533632B (en) | 2019-12-06 |
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