CN106788897A - The management method of Downlink Control Information, managing device, base station and terminal - Google Patents
The management method of Downlink Control Information, managing device, base station and terminal Download PDFInfo
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- CN106788897A CN106788897A CN201611244396.XA CN201611244396A CN106788897A CN 106788897 A CN106788897 A CN 106788897A CN 201611244396 A CN201611244396 A CN 201611244396A CN 106788897 A CN106788897 A CN 106788897A
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- downlink control
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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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0078—Timing of allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention provides a kind of management method of Downlink Control Information, managing device, base station and terminal, wherein, the management method of Downlink Control Information, for base station, including：To first kind TTI and Equations of The Second Kind TTI allocation of downlink control channel resources, wherein, the duration of the Equations of The Second Kind TTI is the integral multiple of the duration of the first kind TTI, the down control channel resources of the Equations of The Second Kind TTI are used to carry the corresponding first exclusive Downlink Control Information of terminal of the first kind TTI scheduling, and the down control channel resources of the first kind TTI are used to carry the corresponding second exclusive Downlink Control Information of terminal of the first kind TTI scheduling；The terminal dispatched to the first kind TTI sends the first exclusive Downlink Control Information and the second exclusive Downlink Control Information.By technical scheme, while data transmission efficiency is ensured, Downlink Control Information expense is significantly reduced.
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
With the development of mobile Internet, the applied business for largely meeting various specific functions has been emerged.Some of them
Business is relatively low to data delay requirement, for example receiving and dispatching mail, downloads movies；But separately have some business has strictly to data delay
Requirement, such as network on-line played, rushes to purchase, robbing red packet etc., and the time delay that this kind of business is usually required user data to the greatest extent may be used
Can it is short.In LTE (Long Term Evolution, Long Term Evolution) network, TTI (Transmission Time
Interval, transmission time interval) it is the important indicator for influenceing user data delay.TTI that current LTE system is used (after
Text is referred to as legacy TTI) it is 1ms, a namely subframe, transmitting terminal sends a data block per 1ms, and receiving terminal can connect per 1ms
Receive a data block.
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.There is for example [R1-160942] [R1-160930] the quantitative reduction that have studied TTI durations of some documents at present to LTE data
The influence of time delay, analysis display is not merely that base station, the transmission time interval of terminal shorten using sTTI, accordingly, with this
Sending the corresponding data processing time in interval can also be decreased, and such as data code modulation and data demodulation time all can
Reduced with the reduction of data block size.In the LTE network of later release it is possible that using legacy TTI with
Two kinds of sTTI sends the situation that the UE (User Equipment, user terminal) at interval coexists.And drawn 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 preceding 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 for the common downlink control information of all UE of cell and respectively for the exclusive descending controls of UE of each UE
Information processed.Wherein, common control information mainly includes that the information for indicating control channel resource to occupy OFDM symbol quantity (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 mainly includes the time-frequency money of 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 being designed 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 will be many times of legacy TTI and (depend on the duration of legacy TTI and sTTI
Multiple proportion).Excessive Downlink Control Information resource overhead can influence the data transmission efficiency of sTTI, it is difficult to play sTTI reductions
The effect of time delay, 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, while data transmission efficiency is ensured, significantly reduces Downlink Control Information expense.
In view of this, the present invention proposes a kind of management method of Downlink Control Information, for base station, including：To first
Class TTI and Equations of The Second Kind TTI allocation of downlink control channel resources, wherein, the duration of the Equations of The Second Kind TTI is the first kind TTI
Duration integral multiple, the down control channel resources of the Equations of The Second Kind TTI are used to carry the terminal of the first kind TTI scheduling
Corresponding first exclusive Downlink Control Information, the down control channel resources of the first kind TTI are used to carry the first kind
The corresponding second exclusive Downlink Control Information of terminal of TTI scheduling；The terminal dispatched to the first kind TTI sends described first
Exclusive Downlink Control Information and the second exclusive Downlink Control Information.
In the technical scheme, the corresponding Downlink Control Information of terminal of first kind TTI scheduling (including first is exclusive descending
Control information and the second exclusive Downlink Control Information), it uses double-deck control information structure, the first exclusive Downlink Control Information to hold
The down control channel resources of Equations of The Second Kind TTI (i.e. Legacy TTI) are loaded in, the second exclusive Downlink Control Information is carried on first
The down control channel resources of class TTI, will be divided at a slow speed (i.e. using the exclusive control information of the UE of sTTI (i.e. first kind TTI)
First exclusive Downlink Control Information) and quick (the i.e. second exclusive Downlink Control Information) two levels, only needed in each sTTI
The second exclusive Downlink Control Information is updated, the control information expense in sTTI is significantly reduced, the tune in sTTI is met again
Degree flexibility, it is ensured that data transmission efficiency.
In the above-mentioned technical solutions, it is preferable that progress when the first exclusive Downlink Control Information is at interval of Equations of The Second Kind TTI
Row updates, and the second exclusive descending control control information is updated at interval of first kind TTI durations.
In any of the above-described technical scheme, it is preferable that the down control channel resources of the Equations of The Second Kind TTI are additionally operable to hold
The corresponding common downlink control information of terminal and the Equations of The Second Kind TTI for carrying the Equations of The Second Kind TTI and first kind TTI scheduling are adjusted
The corresponding exclusive Downlink Control Information of terminal of degree.
In the technical scheme, the down control channel resources of legacy TTI (i.e. Equations of The Second Kind TTI) are remained, therefore had
Good backwards compatibility, it is ensured that use user's normal work in a network of legacy TTI, and common downlink control letter
Breath is only carried by the down control channel resources of legacyTTI, and the UE using legacy TTI and sTTI (i.e. first kind TTI) is equal
The common downlink control information can be received, it is to avoid repeat to transmit in sTTI.
In any of the above-described technical scheme, it is preferable that include benchmark MCS in the described first exclusive Downlink Control Information
Value, the second exclusive Downlink Control Information includes representing the situation of actual deviant of the MCS value relative to the benchmark MCS value
Under, the benchmark MCS value and the deviant are sent to the terminal, so that the terminal is according to the benchmark MCS value and institute
State deviant and determine the actual MCS value；Include multiple resource module groups in the described first exclusive Downlink Control Information, described the
In the case that two exclusive Downlink Control Information include the identification information of each resource module group, send multiple to the terminal
The identification information of the resource module group and each resource module group, so that the terminal is according to multiple resource modules
The identification information of group and each resource module group determines the position of required resource module.
In the technical scheme, because the bit number that benchmark MCS value is used is more than the bit number that MCS deviants are used, because
This can effectively reduce Downlink Control Information expense, due to second in the case where a legacy TTI includes multiple sTTI
Only need to represent the identification information of the multiple RB in RB groups in exclusive downlink control message, it is not necessary to represent that whole sTTI takes
RB information in resource, it is thus possible to reduce Downlink Control Information expense.
According to the second aspect of the invention, it is proposed that a kind of management method of Downlink Control Information, for terminal, including：
When first kind TTI dispatches the terminal, the first exclusive Downlink Control Information and the second exclusive descending control that base station sends are received
Information processed, wherein, the first exclusive Downlink Control Information is carried in the down control channel resources of Equations of The Second Kind TTI, described
Second exclusive Downlink Control Information is carried in the down control channel resources of the first kind TTI, the Equations of The Second Kind TTI when
Length is the integral multiple of the duration of the first kind TTI；According to the described first exclusive Downlink Control Information and the second descending control
Information processed, it is determined that required actual downstream control information.
It is special by receive base station transmission first in first kind TTI (i.e. sTTI) dispatch terminal in the technical scheme
Category Downlink Control Information and the second exclusive Downlink Control Information, and it is exclusive descending based on the first exclusive Downlink Control Information and second
Control information, obtains required actual downstream control information, will use the exclusive control information of the UE of sTTI (i.e. first kind TTI)
It is divided into (the i.e. first exclusive Downlink Control Information) at a slow speed and quick (the i.e. second exclusive Downlink Control Information) two levels, at each
The second exclusive Downlink Control Information only need to be updated in sTTI, the control information expense in sTTI is significantly reduced.
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：
Allocation unit, for first kind TTI and Equations of The Second Kind TTI allocation of downlink control channel resources, wherein, the Equations of The Second Kind TTI's
Duration is the integral multiple of the duration of the first kind TTI, and the down control channel resources of the Equations of The Second Kind TTI are used to carry described
The corresponding first exclusive Downlink Control Information of terminal of first kind TTI scheduling, the down control channel resources of the first kind TTI
The corresponding second exclusive Downlink Control Information of terminal for carrying the first kind TTI scheduling；Transmitting element, for described
The terminal of first kind TTI scheduling sends the first exclusive Downlink Control Information and the second exclusive Downlink Control Information.
In the technical scheme, the corresponding Downlink Control Information of terminal of first kind TTI scheduling (including first is exclusive descending
Control information and the second exclusive Downlink Control Information), it uses double-deck control information structure, the first exclusive Downlink Control Information to hold
The down control channel resources of Equations of The Second Kind TTI (i.e. Legacy TTI) are loaded in, the second exclusive Downlink Control Information is carried on first
The down control channel resources of class TTI, will be divided at a slow speed (i.e. using the exclusive control information of the UE of sTTI (i.e. first kind TTI)
First exclusive Downlink Control Information) and quick (the i.e. second exclusive Downlink Control Information) two levels, only needed in each sTTI
The second exclusive Downlink Control Information is updated, the control information expense in sTTI is significantly reduced, while in meeting sTTI again
Dispatching flexibility, it is ensured that data transmission efficiency.
In the above-mentioned technical solutions, it is preferable that progress when the first exclusive Downlink Control Information is at interval of Equations of The Second Kind TTI
Row updates, and the second exclusive descending control control information is updated at interval of first kind TTI durations.
In any of the above-described technical scheme, it is preferable that the down control channel resources of the Equations of The Second Kind TTI are additionally operable to hold
The corresponding common downlink control information of terminal and the Equations of The Second Kind TTI for carrying the Equations of The Second Kind TTI and first kind TTI scheduling are adjusted
The corresponding exclusive Downlink Control Information of terminal of degree.
In the technical scheme, the down control channel resources of legacy TTI (i.e. Equations of The Second Kind TTI) are remained, therefore had
Good backwards compatibility, it is ensured that use user's normal work in a network of legacy TTI, and common downlink control letter
Breath is only carried by the down control channel resources of legacyTTI, and the UE using legacy TTI and sTTI (i.e. first kind TTI) is equal
The common downlink control information can be received, it is to avoid repeat to transmit in sTTI.
In any of the above-described technical scheme, it is preferable that include benchmark MCS in the described first exclusive Downlink Control Information
Value, the second exclusive Downlink Control Information includes representing the situation of actual deviant of the MCS value relative to the benchmark MCS value
Under, the transmitting element specifically for the terminal send the benchmark MCS value and the deviant so that the terminal root
Determine the actual MCS value according to the benchmark MCS value and the deviant；Include in the described first exclusive Downlink Control Information many
Individual resource module group, the second exclusive Downlink Control Information includes the situation of the identification information of each resource module group
Under, the transmitting element to the terminal specifically for sending multiple resource module groups with each resource module group
Identification information, so that the terminal determines according to the identification information of multiple resource module groups and each resource module group
The position of required resource module.
In the technical scheme, because the bit number that benchmark MCS value is used is more than the bit number that MCS deviants are used, because
This can effectively reduce Downlink Control Information expense, due to second in the case where a legacy TTI includes multiple sTTI
Only need to represent the identification information of the multiple RB in RB groups in exclusive downlink control message, it is not necessary to represent that whole sTTI takes
RB information in resource, it is thus possible to reduce Downlink Control Information expense.
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 when first kind TTI dispatches the terminal, receiving the first exclusive Downlink Control Information and that base station sends
Two exclusive Downlink Control Information, wherein, the first exclusive Downlink Control Information is carried on the down control channel of Equations of The Second Kind TTI
In resource, the second exclusive Downlink Control Information is carried in the down control channel resources of the first kind TTI, and described
The duration of two class TTI is the integral multiple of the duration of the first kind TTI；Determining unit, for exclusive descending according to described first
Control information and second Downlink Control Information, it is determined that required actual downstream control information.
It is special by receive base station transmission first in first kind TTI (i.e. sTTI) dispatch terminal in the technical scheme
Category Downlink Control Information and the second exclusive Downlink Control Information, and it is exclusive descending based on the first exclusive Downlink Control Information and second
Control information, obtains required actual downstream control information, will use the exclusive control information of the UE of sTTI (i.e. first kind TTI)
It is divided into (the i.e. first exclusive Downlink Control Information) at a slow speed and quick (the i.e. second exclusive Downlink Control Information) two levels, at each
The second exclusive Downlink Control Information only need to be updated in sTTI, the control information expense in sTTI is significantly reduced.
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 a sixth aspect of the present invention, it is proposed that a kind of terminal, including：Descending control as described in above-mentioned technical scheme
The managing device of information.
By above technical scheme, while data transmission efficiency is ensured, time delay is effectively reduced.
Brief description of the drawings
Fig. 1 shows the schematic flow diagram of the management method of Downlink Control Information according to an embodiment of the invention；
Fig. 2 shows the exemplary flow of the management method of Downlink Control Information according to another embodiment of the invention
Figure；
Fig. 3 shows the schematic block diagram of the managing device of Downlink Control Information according to an embodiment of the invention；
Fig. 4 shows the schematic block diagram of the managing device of Downlink Control Information according to another embodiment of the invention；
Fig. 5 shows the schematic block diagram of base station according to an embodiment of the invention；
Fig. 6 shows the schematic block diagram of terminal according to an embodiment of the invention；
Fig. 7 shows the schematic diagram of the resource allocation of down control channel according to an embodiment of the invention.
Specific embodiment
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Mode is applied to be further described in detail the present invention.It should be noted that in the case where not conflicting, the implementation 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 limitation.
Fig. 1 shows the schematic flow diagram of the management method of Downlink Control Information according to an embodiment of the invention.
As shown in figure 1, the management method of Downlink Control Information according to an embodiment of the invention, for base station, bag
Include：
Step 102, to first kind TTI and Equations of The Second Kind TTI allocation of downlink control channel resources, wherein, the Equations of The Second Kind TTI
Duration be the first kind TTI duration integral multiple, the down control channel resources of the Equations of The Second Kind TTI are used to carry institute
State the corresponding first exclusive Downlink Control Information of terminal of first kind TTI scheduling, the down control channel money of the first kind TTI
Source is used to carry the corresponding second exclusive Downlink Control Information of terminal of the first kind TTI scheduling.
Step 104, the terminal dispatched to the first kind TTI sends the first exclusive Downlink Control Information and described the
Two exclusive Downlink Control Information.
In the technical scheme, the corresponding Downlink Control Information of terminal of first kind TTI scheduling (including first is exclusive descending
Control information and the second exclusive Downlink Control Information), it uses double-deck control information structure, the first exclusive Downlink Control Information to hold
The down control channel resources of Equations of The Second Kind TTI (i.e. Legacy TTI) are loaded in, the second exclusive Downlink Control Information is carried on first
The down control channel resources of class TTI, will be divided at a slow speed (i.e. using the exclusive control information of the UE of sTTI (i.e. first kind TTI)
First exclusive Downlink Control Information) and quick (the i.e. second exclusive Downlink Control Information) two levels, only needed in each sTTI
The second exclusive Downlink Control Information is updated, the control information expense in sTTI is significantly reduced, the tune in sTTI is met again
Degree flexibility, it is ensured that data transmission efficiency.
In the above-mentioned technical solutions, it is preferable that progress when the first exclusive Downlink Control Information is at interval of Equations of The Second Kind TTI
Row updates, and the second exclusive descending control control information is updated at interval of first kind TTI durations.
In any of the above-described technical scheme, it is preferable that the down control channel resources of the Equations of The Second Kind TTI are additionally operable to hold
The corresponding common downlink control information of terminal and the Equations of The Second Kind TTI for carrying the Equations of The Second Kind TTI and first kind TTI scheduling are adjusted
The corresponding exclusive Downlink Control Information of terminal of degree.
In the technical scheme, the down control channel resources of legacy TTI (i.e. Equations of The Second Kind TTI) are remained, therefore had
Good backwards compatibility, it is ensured that use user's normal work in a network of legacy TTI, and common downlink control letter
Breath is only carried by the down control channel resources of legacyTTI, and the UE using legacy TTI and sTTI (i.e. first kind TTI) is equal
The common downlink control information can be received, it is to avoid repeat to transmit in sTTI.
In any of the above-described technical scheme, it is preferable that include benchmark MCS in the described first exclusive Downlink Control Information
Value, the second exclusive Downlink Control Information includes representing the situation of actual deviant of the MCS value relative to the benchmark MCS value
Under, the benchmark MCS value and the deviant are sent to the terminal, so that the terminal is according to the benchmark MCS value and institute
State deviant and determine the actual MCS value；Include multiple resource module groups in the described first exclusive Downlink Control Information, described the
In the case that two exclusive Downlink Control Information include the identification information of each resource module group, send multiple to the terminal
The identification information of the resource module group and each resource module group, so that the terminal is according to multiple resource modules
The identification information of group and each resource module group determines the position of required resource module.
In the technical scheme, because the bit number that benchmark MCS value is used is more than the bit number that MCS deviants are used, because
This can effectively reduce Downlink Control Information expense, due to second in the case where a legacy TTI includes multiple sTTI
Only need to represent the identification information of the multiple RB in RB groups in exclusive downlink control message, it is not necessary to represent that whole sTTI takes
RB information in resource, it is thus possible to reduce Downlink Control Information expense.
Fig. 2 shows the exemplary flow of the management method of Downlink Control Information according to another embodiment of the invention
Figure.
As shown in Fig. 2 the management method of Downlink Control Information according to another embodiment of the invention, for terminal,
Including：
Step 202, when first kind TTI dispatches the terminal, receives the first exclusive Downlink Control Information that base station sends
With the second exclusive Downlink Control Information, wherein, the first exclusive Downlink Control Information is carried on the descending control of Equations of The Second Kind TTI
In channel resource, the second exclusive Downlink Control Information is carried in the down control channel resources of the first kind TTI, institute
The duration for stating Equations of The Second Kind TTI is the integral multiple of the duration of the first kind TTI.
Step 204, according to the described first exclusive Downlink Control Information and second Downlink Control Information, it is determined that required
Actual downstream control information.
It is special by receive base station transmission first in first kind TTI (i.e. sTTI) dispatch terminal in the technical scheme
Category Downlink Control Information and the second exclusive Downlink Control Information, and it is exclusive descending based on the first exclusive Downlink Control Information and second
Control information, obtains required actual downstream control information, will use the exclusive control information of the UE of sTTI (i.e. first kind TTI)
It is divided into (the i.e. first exclusive Downlink Control Information) at a slow speed and quick (the i.e. second exclusive Downlink Control Information) two levels, at each
The second exclusive Downlink Control Information only need to be updated in sTTI, the control information expense in sTTI is significantly reduced.
Fig. 3 shows the schematic block diagram of the managing device of Downlink Control Information according to an embodiment of the invention.
As shown in figure 3, the managing device 300 of Downlink Control Information according to an embodiment of the invention, for base station,
Including：Allocation unit 302 and transmitting element 304.
Wherein, allocation unit 302 is used for first kind TTI and Equations of The Second Kind TTI allocation of downlink control channel resources, wherein,
The duration of the Equations of The Second Kind TTI is the integral multiple of the duration of the first kind TTI, the down control channel of the Equations of The Second Kind TTI
Resource is used to carry the corresponding first exclusive Downlink Control Information of terminal of the first kind TTI scheduling, the first kind TTI's
Down control channel resources are used to carry the corresponding second exclusive Downlink Control Information of terminal of the first kind TTI scheduling；Hair
Terminal of the unit 304 for being dispatched to the first kind TTI is sent to send the first exclusive Downlink Control Information and described second
Exclusive Downlink Control Information.
In the technical scheme, the corresponding Downlink Control Information of terminal of first kind TTI scheduling (including first is exclusive descending
Control information and the second exclusive Downlink Control Information), it uses double-deck control information structure, the first exclusive Downlink Control Information to hold
The down control channel resources of Equations of The Second Kind TTI (i.e. Legacy TTI) are loaded in, the second exclusive Downlink Control Information is carried on first
The down control channel resources of class TTI, will be divided at a slow speed (i.e. using the exclusive control information of the UE of sTTI (i.e. first kind TTI)
First exclusive Downlink Control Information) and quick (the i.e. second exclusive Downlink Control Information) two levels, only needed in each sTTI
The second exclusive Downlink Control Information is updated, the control information expense in sTTI is significantly reduced, while in meeting sTTI again
Dispatching flexibility, it is ensured that data transmission efficiency.
In the above-mentioned technical solutions, it is preferable that progress when the first exclusive Downlink Control Information is at interval of Equations of The Second Kind TTI
Row updates, and the second exclusive descending control control information is updated at interval of first kind TTI durations.
In any of the above-described technical scheme, it is preferable that the down control channel resources of the Equations of The Second Kind TTI are additionally operable to hold
The corresponding common downlink control information of terminal and the Equations of The Second Kind TTI for carrying the Equations of The Second Kind TTI and first kind TTI scheduling are adjusted
The corresponding exclusive Downlink Control Information of terminal of degree.
In the technical scheme, the down control channel resources of legacy TTI (i.e. Equations of The Second Kind TTI) are remained, therefore had
Good backwards compatibility, it is ensured that use user's normal work in a network of legacy TTI, and common downlink control letter
Breath is only carried by the down control channel resources of legacyTTI, and the UE using legacy TTI and sTTI (i.e. first kind TTI) is equal
The common downlink control information can be received, it is to avoid repeat to transmit in sTTI.
In any of the above-described technical scheme, it is preferable that include benchmark MCS in the described first exclusive Downlink Control Information
Value, the second exclusive Downlink Control Information includes representing the situation of actual deviant of the MCS value relative to the benchmark MCS value
Under, the transmitting element 304 specifically for the terminal send the benchmark MCS value and the deviant so that the end
End determines the actual MCS value according to the benchmark MCS value and the deviant；In the described first exclusive Downlink Control Information bag
Multiple resource module groups are included, the second exclusive Downlink Control Information includes the feelings of the identification information of each resource module group
Under condition, the transmitting element 304 to the terminal specifically for sending multiple resource module groups and each described resource mould
The identification information of block group, so that the terminal is believed according to the mark of multiple resource module groups and each resource module group
Breath determines the position of required resource module.
In the technical scheme, because the bit number that benchmark MCS value is used is more than the bit number that MCS deviants are used, because
This can effectively reduce Downlink Control Information expense, due to second in the case where a legacy TTI includes multiple sTTI
Only need to represent the identification information of the multiple RB in RB groups in exclusive downlink control message, it is not necessary to represent that whole sTTI takes
RB information in resource, it is thus possible to reduce Downlink Control Information expense.
Specifically, in the LTE system that Legacy TTI and sTTI coexists, resource allocation such as Fig. 7 institutes of down control channel
Show, Legacy down control channels are distributed in whole system bandwidth and go forward in n OFDM symbol, and sTTI prevents take up legacyTTI
The resource of down control channel.The preceding m OFDM symbol of sTTI is used to carry sTTI Downlink Control Information, i.e., provided using the sTTI
The second exclusive Downlink Control Information of the UE in source.LegacyTTI down control channels are except carrying traditional common downlink control
Outside information and the exclusive Downlink Control Information using the UE of legacy TTI, also carry the UE for using sTTI first is exclusive
Downlink Control Information.
First exclusive Downlink Control Information updates once in a legacy TTI, and the second exclusive Downlink Control Information exists
Can be updated in each sTTI, the UE using sTTI enters the first exclusive Downlink Control Information and the second exclusive Downlink Control Information
Row is calculated so as to obtain actual Downlink Control Information, specifically, for example：
1) benchmark MCS value is set in the first exclusive Downlink Control Information, is set in the second exclusive Downlink Control Information
MCS deviants, UE receives the second exclusive descending control in benchmark MCS value and specific sTTI in the first exclusive Downlink Control Information
The MCS deviants of information processed, and the actual MCS value used in the sTTI is obtained using formula is calculated as below：
Actual MCS value=benchmark MCS value+MCS deviants；
Wherein, the bit number that benchmark MCS value is used is more than the bit number that MCS deviants are used, thus in a legacy
TTI can reduce the expense of Downlink Control Information comprising in the case of multiple sTTI；
2) the RB resources shared by sTTI are divided into the group of some fixations, every group includes multiple RB.It is exclusive descending first
The index of RB groups that the RB resources of UE distribution are belonged to is set in control message, is set in the second exclusive downlink control message
Put indexes of the RB of UE distribution in the RB groups.UE receives the RB group indexes and second in the first exclusive downlink control message
RB indexes in exclusive downlink control message, obtain the position of the RB of this UE distribution.Due in the second exclusive downlink control message
Only need to represent the information of the multiple RB in RB groups, it is not necessary to represent that whole sTTI takes the RB information in resource, thus energy
Enough reduce control information expense；
3) using sTTI UE ascending HARQ course ACK/NACK feedback messages, descending HARQ process IDs and upper
Row power control instruction etc. should be all carried in the second exclusive Downlink Control Information, and UE receives the second exclusive downlink control message,
Without this type of information and the first exclusive downlink control message are done with reference to calculating.
In the present embodiment, the down control channel resources of legacy TTI are remained, therefore with good backward compatibility
Property, it is ensured that use user's normal work in a network of legacy TTI；Common downlink control information is only by under legacyTTI
Row control channel is carried, and using the UE of legacy TTI and sTTI can receive the common downlink control information, it is to avoid
Repeat to transmit in sTTI；The first exclusive Downlink Control Information and second exclusive will be divided into using the exclusive control information of the UE of sTTI
Two levels of Downlink Control Information, only quick control information need to be updated in each sTTI, reduce the control information in sTTI
Expense, while meeting the dispatching flexibility in sTTI again；The control information region of sTTI uses the time-division with data information area
Multiplexing, can decoding control information as early as possible, beneficial to the timely demodulation of data message.
Fig. 4 shows the schematic block diagram of the managing device of Downlink Control Information according to another embodiment of the invention.
As shown in figure 4, the managing device 400 of Downlink Control Information according to another embodiment of the invention, for end
End, including：Receiving unit 402 and determining unit 404.
Wherein, receiving unit 402 is used for when first kind TTI dispatches the terminal, and receive base station transmission first is exclusive
Downlink Control Information and the second exclusive Downlink Control Information, wherein, the first exclusive Downlink Control Information is carried on Equations of The Second Kind
In the down control channel resources of TTI, the second exclusive Downlink Control Information is carried on the descending control of the first kind TTI
In channel resource, the duration of the Equations of The Second Kind TTI is the integral multiple of the duration of the first kind TTI；Determining unit 404 is used for root
According to the described first exclusive Downlink Control Information and second Downlink Control Information, it is determined that required actual downstream control information.
It is special by receive base station transmission first in first kind TTI (i.e. sTTI) dispatch terminal in the technical scheme
Category Downlink Control Information and the second exclusive Downlink Control Information, and it is exclusive descending based on the first exclusive Downlink Control Information and second
Control information, obtains required actual downstream control information, will use the exclusive control information of the UE of sTTI (i.e. first kind TTI)
It is divided into (the i.e. first exclusive Downlink Control Information) at a slow speed and quick (the i.e. second exclusive Downlink Control Information) two levels, at each
The second exclusive Downlink Control Information only need to be updated in sTTI, the control information expense in sTTI is significantly reduced.
Fig. 5 shows the schematic block diagram of base station according to an embodiment of the invention.
As shown in figure 5, base station 500 according to an embodiment of the invention, including：Downlink Control Information as shown in Figure 3
Managing device 300.
Fig. 6 shows the schematic block diagram of terminal according to an embodiment of the invention.
As shown in fig. 6, terminal 600 according to an embodiment of the invention, including：Downlink Control Information as shown in Figure 4
Managing device 400.
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, while data transmission efficiency is ensured, significantly reduces Downlink Control Information expense.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, 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 including：
To first kind TTI and Equations of The Second Kind TTI allocation of downlink control channel resources, wherein, the duration of the Equations of The Second Kind TTI is described
The integral multiple of the duration of first kind TTI, the down control channel resources of the Equations of The Second Kind TTI are used to carry the first kind TTI
The corresponding first exclusive Downlink Control Information of terminal of scheduling, the down control channel resources of the first kind TTI are used to carry
The corresponding second exclusive Downlink Control Information of terminal of the first kind TTI scheduling；
The terminal dispatched to the first kind TTI sends the first exclusive Downlink Control Information and the second exclusive descending control
Information processed.
2. the management method of Downlink Control Information according to claim 1, it is characterised in that the first exclusive descending control
Information processed is updated at interval of Equations of The Second Kind TTI durations, and the second exclusive descending control control information is at interval of first kind TTI
Duration is updated.
3. the management method of Downlink Control Information according to claim 1 and 2, it is characterised in that the Equations of The Second Kind TTI's
Down control channel resources are additionally operable to carry the corresponding common downlink control of terminal of the Equations of The Second Kind TTI and first kind TTI scheduling
Information processed and the corresponding exclusive Downlink Control Information of terminal of Equations of The Second Kind TTI scheduling.
4. the management method of Downlink Control Information according to claim 1 and 2, it is characterised in that
Include benchmark MCS value in the described first exclusive Downlink Control Information, the second exclusive Downlink Control Information includes representing
In the case of deviant of the actual MCS value relative to the benchmark MCS value, the benchmark MCS value and institute are sent to the terminal
Deviant is stated, so that the terminal determines the actual MCS value according to the benchmark MCS value and the deviant；
Include multiple resource module groups in the described first exclusive Downlink Control Information, the second exclusive Downlink Control Information includes
In the case of the identification information of each resource module group, multiple resource module groups and each institute are sent to the terminal
The identification information of resource module group is stated, so that the terminal is according to multiple resource module groups and each described resource module group
Identification information determine needed for resource module position.
5. a kind of management method of Downlink Control Information, for terminal, it is characterised in that including：
First kind TTI dispatch the terminal when, receive base station send the first exclusive Downlink Control Information and second it is exclusive under
Row control information, wherein, the first exclusive Downlink Control Information is carried in the down control channel resources of Equations of The Second Kind TTI,
The second exclusive Downlink Control Information is carried in the down control channel resources of the first kind TTI, the Equations of The Second Kind TTI
Duration be the first kind TTI duration integral multiple；
According to the described first exclusive Downlink Control Information and second Downlink Control Information, it is determined that required actual downstream control
Information.
6. a kind of managing device of Downlink Control Information, for base station, it is characterised in that including：
Allocation unit, for first kind TTI and Equations of The Second Kind TTI allocation of downlink control channel resources, wherein, the Equations of The Second Kind
The duration of TTI is the integral multiple of the duration of the first kind TTI, and the down control channel resources of the Equations of The Second Kind TTI are used to hold
Carry the corresponding first exclusive Downlink Control Information of terminal of the first kind TTI scheduling, the descending control letter of the first kind TTI
Road resource is used to carry the corresponding second exclusive Downlink Control Information of terminal of the first kind TTI scheduling；
Transmitting element, the first exclusive Downlink Control Information and described is sent for the terminal dispatched to the first kind TTI
Second exclusive Downlink Control Information.
7. the managing device of Downlink Control Information according to claim 5, it is characterised in that the first exclusive descending control
Information processed is updated at interval of Equations of The Second Kind TTI durations, and the second exclusive descending control control information is at interval of first kind TTI
Duration is updated.
8. the managing device of the Downlink Control Information according to claim 5 or 6, it is characterised in that the Equations of The Second Kind TTI's
Down control channel resources are additionally operable to carry the corresponding common downlink control of terminal of the Equations of The Second Kind TTI and first kind TTI scheduling
Information processed and the corresponding exclusive Downlink Control Information of terminal of Equations of The Second Kind TTI scheduling.
9. the managing device of the Downlink Control Information according to claim 5 or 6, it is characterised in that
Include benchmark MCS value in the described first exclusive Downlink Control Information, the second exclusive Downlink Control Information includes representing
In the case of deviant of the actual MCS value relative to the benchmark MCS value, the transmitting element to the terminal specifically for sending out
The benchmark MCS value and the deviant are sent, so that the terminal is according to the benchmark MCS value and the deviant determine
Actual MCS value；
Include multiple resource module groups in the described first exclusive Downlink Control Information, the second exclusive Downlink Control Information includes
In the case of the identification information of each resource module group, the transmitting element to the terminal specifically for sending multiple institutes
The identification information of resource module group and each resource module group is stated, so that the terminal is according to multiple resource module groups
The position of resource module needed for determining with the identification information of resource module group each described.
10. a kind of managing device of Downlink Control Information, for terminal, it is characterised in that including：
Receiving unit, for when first kind TTI dispatches the terminal, receiving the first exclusive Downlink Control Information that base station sends
With the second exclusive Downlink Control Information, wherein, the first exclusive Downlink Control Information is carried on the descending control of Equations of The Second Kind TTI
In channel resource, the second exclusive Downlink Control Information is carried in the down control channel resources of the first kind TTI, institute
The duration for stating Equations of The Second Kind TTI is the integral multiple of the duration of the first kind TTI；
Determining unit, for according to the described first exclusive Downlink Control Information and second Downlink Control Information, it is determined that required
Actual downstream control information.
A kind of 11. base stations, it is characterised in that including：The pipe of the Downlink Control Information as any one of claim 6 to 9
Reason device.
A kind of 12. terminals, it is characterised in that including：The managing device of Downlink Control Information as claimed in claim 10.
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| WO2018218604A1 (en) * | 2017-06-01 | 2018-12-06 | Zte Corporation | Methods and computing device for configuring resource scheduling |
| CN109089317A (en) * | 2017-06-14 | 2018-12-25 | 华为技术有限公司 | Method for parameter configuration, terminal device, network side equipment and communication system |
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| CN105933100A (en) * | 2016-06-27 | 2016-09-07 | 珠海市魅族科技有限公司 | HARQ feedback method, HARQ feedback device, base station and terminal |
| CN106131963A (en) * | 2016-06-12 | 2016-11-16 | 珠海市魅族科技有限公司 | Resource allocation method and device, base station |
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| CN106131963A (en) * | 2016-06-12 | 2016-11-16 | 珠海市魅族科技有限公司 | Resource allocation method and device, base station |
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| WO2018218604A1 (en) * | 2017-06-01 | 2018-12-06 | Zte Corporation | Methods and computing device for configuring resource scheduling |
| CN109089317A (en) * | 2017-06-14 | 2018-12-25 | 华为技术有限公司 | Method for parameter configuration, terminal device, network side equipment and communication system |
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| CN106788897B (en) | 2020-04-03 |
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