CN106686740A - Transmitting/detecting method of downward control information, base station and user equipment - Google Patents
Transmitting/detecting method of downward control information, base station and user equipment Download PDFInfo
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- CN106686740A CN106686740A CN201510754827.6A CN201510754827A CN106686740A CN 106686740 A CN106686740 A CN 106686740A CN 201510754827 A CN201510754827 A CN 201510754827A CN 106686740 A CN106686740 A CN 106686740A
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
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Abstract
The invention provides a transmitting /detecting method of downward control information, a base station and user equipment. The base station transmits a downward control channel carrying the downward control information in a control channel area within a dispatch time window, wherein downward control channels corresponding to different coverage enhancement levels are located in dispatch time windows of different lengths or located in control channel areas in different sizes in the dispatch time windows, a terminal controls the downward control information in the control channel areas of entire or part of dispatch time windows, wherein terminals of different coverage enhancement levels detect the dispatch time windows of different lengths or the control channel areas in different sizes in the dispatch time windows. According to the transmitting /detecting method of the downward control information, the base station and the user equipment, the effect of combined dispatching is achieved; meanwhile, users of different coverage enhancement levels are differentiated simultaneously, thus the expenditure and resources can be saved and controlled, clogging of the users of different coverage enhancement levels can be avoided at the same time, and thus the dispatching efficiency and user dispatching quantity are improved.
Description
Technical field
The present invention relates to the communications field, the transmission/detection method, base station and user in particular to a kind of Downlink Control Information
Equipment.
Background technology
Machine type communication (Machine Type Communication, referred to as MTC) is also known as machine to machine (Machine to
Machine, referred to as M2M), arrowband Internet of Things (NarrowBand Internet of Things, referred to as NB-IoT) is mesh
The main application form of front Internet of Things.Such communication system feature typically compared to Long Term Evolution (Long Term Evolution,
Referred to as LTE) narrower bandwidth, such as 1.4MHz, 200kHz from the point of view of system；User terminal or equipment (User Equipment,
Referred to as UE) quantity is more, including conventional hand terminal and machine, sensor terminal etc.；With cover lifting demand, including
Cover and lift 15dB or 20dB.
Such communication system usually required that and both can work independently, it is also possible to coexisted with LTE system.The wherein transmitting band of NB-IoT
It is wide to be respectively 180kHz and 15kHz with downstream link sub-carrier interval, respectively with one Physical Resource Block (Physical of LTE system
Resource Block, referred to as PRB) bandwidth it is identical with subcarrier spacing, be conducive to reusing existing in NB-IoT systems
The relevant design of LTE system, when the GSM frequency spectrums of NB-IoT system reuses are adjacent with the frequency spectrum of LTE system, is also beneficial to
Reduce interfering for two systems.
Respectively using downstream grants (DownLink grant, referred to as DL grant) and uplink authorization in existing LTE system
The downlink data transmission and transmitting uplink data of (UpLink grant, referred to as UL grant) dispatch terminal.Wherein DL grant
Downlink Control Information (Downlink Control Information, referred to as DCI) is referred to as with UL grant, using physical down
Control channel (Physical Downlink Control Channel, referred to as PDCCH) is carried.Downlink data is carried on descending
In Traffic Channel (Physical Downlink Shared Channel, referred to as PDSCH), upstream data is carried on uplink service
In channel (Physical Uplink Shared Channel, referred to as PUSCH).For each terminal in existing LTE system
Downlink service data bag or uplink business data bag, base station is required for the independently transmitted down control channel for carrying corresponding DCI.By
It is more in the terminal quantity of Internet of Things application, the limited problem of scheduling capacity, traditional side occurs using existing scheduling mode
Formula is introduced to increase scheduling resource, such as strengthens Physical Downlink Control Channel (Enhanced Physical Downlink Control
Channel, referred to as EPDCCH).But due to Internet of things system limited bandwidth resources, need to consider to be applied to terminal quantity compared with
It is many, and the similar scheduling mode of type of service, such as up-downgoing combined dispatching and multi-user association scheduling.For in narrower bandwidth
How NB-IoT systems, support above-mentioned combined dispatching and how to transmit the down control channel for carrying corresponding combined dispatching information,
An effective solution is also lacked at present.
The content of the invention
The invention provides a kind of transmission/detection method of Downlink Control Information, base station and user equipment, at least to solve related skill
Scheduling resource limited problem when narrowband resource present in art is limited and terminal quantity is more.
According to an aspect of the invention, there is provided a kind of sending method of Downlink Control Information, including：
The down control channel of bearing downlink control information is sent in control channel region of the base station in scheduling time window, wherein,
Down control channel corresponding to different coverage enhancement grades is located at the scheduling time window of different length or in scheduling time window
Different size of control channel region.
Wherein, different coverage enhancement grades are referred to as different covering lifting demands or different covering demands or different covering scenes,
Such as NB-IoT has three kinds of covering scenes, respectively common (normal) covering scene, medium (medium) covering scene,
Extreme (extreme) covering scene.
Wherein, Downlink Control Information at least includes one of following schedule information type：Down dispatch information, uplink scheduling information,
Up-downgoing combined dispatching information, multi-user association schedule information.
Wherein, the amount of bits of Downlink Control Information is one kind, and the composition form of Downlink Control Information includes one below：By under
Row schedule information is constituted with uplink scheduling information direct splicing；Using 1 or 2bit configured information, form is indicated for descending scheduling letter
Breath or down dispatch information or up-downgoing combined dispatching information, wherein, the bit domain information in unidirectional schedule information compares bi-directional scheduling
Bit domain information in information has more fine granularity；Downlink Control Information is up-downgoing combined dispatching information, and shares up tune
Identical parameter in part in degree information and down dispatch information, different piece is indicated respectively with different parameter point uplink and downlink；
It is made up of the schedule information direct splicing of N number of user, wherein, user is up-downgoing combined dispatching information as a user, or
Person user is uplink scheduling and descending scheduling as two isolated users；Downlink Control Information is multi-subscriber dispatching information, and altogether
With identical parameter in part in single user schedule information, different piece is indicated respectively with different parameter point different user；Using mark
Know bit field and indicate single user schedule information and multi-subscriber dispatching information.
Above-mentioned uplink scheduling and descending scheduling are also referred to as Virtual User as two isolated users, and here refer to will be independent for Virtual User
Down dispatch information see the user that works as dispatcher, or single uplink scheduling information is seen the user that works as dispatcher, now with
The definition of actual user is different, therefore referred to as Virtual User.
Wherein, the amount of bits of Downlink Control Information is two kinds, and the composition form of Downlink Control Information includes one below：It is a kind of
For bi-directional scheduling information, another kind is unidirectional schedule information；One kind is uplink multi-users schedule information, and another kind is descending multiplex
Family schedule information；One kind is multi-subscriber dispatching information, and another kind is the unidirectional schedule information of single user.
Wherein, the amount of bits of Downlink Control Information is three kinds, and the composition form of Downlink Control Information includes one below：DL grant
(down dispatch information), UL grant (uplink scheduling information), DL/UL grant (up-downgoing combined dispatching information) are used respectively
A kind of amount of bits；Multi-subscriber dispatching information, single user up-downgoing combined dispatching information, the unidirectional schedule information of single user；It is up
Multi-user association schedule information, descending multi-user association schedule information, up-downgoing joint multi-subscriber dispatching information；Multi-subscriber dispatching
Information, single user DL grant, single user UL grant use respectively a kind of amount of bits.
Wherein, when the amount of bits of Downlink Control Information is four kinds, the composition form of Downlink Control Information includes one below：It is many
User's down dispatch information, multi-user's uplink scheduling information, single user DL grant, single user UL grant；Single user is unidirectionally adjusted
Degree information, single user up-downgoing combined dispatching information, 2*N Virtual User use N number of multi-user association schedule information, N number of
Virtual User uses N number of multi-user association schedule information, and wherein N is positive integer；In the unidirectional schedule information of single user, single user
Descending combined dispatching information, 2*N Virtual User are used N number of using N number of multi-user association schedule information, N number of Virtual User
Multi-user association schedule information, wherein N are positive integer.
Wherein, resource distribution instruction mode includes at least one of in up-downgoing combined dispatching information：Up-downgoing indicates respectively,
Distribute (DL RA) and ascending resource distribution (UL RA) two bit fields comprising downlink resource；Up-downgoing combined coding, will
DL RA and ascending resource distribute the status number Unified coding of UL RA；Different resource allocation (RA) domain of implication indicates
DL RA and UL RA；Resource location starting is only indicated, resource size is implicit to be determined.
Wherein, in multi-user association schedule information, the control information for distinguishing different user adopts fixed or predefined or high-level signaling
SIB or RRC configures the control information order of multiple users, or indicates the control information of different user using carrying control message head.
Wherein, resource indicates that Traffic Channel time domain takes resource size and fixes according to number of users in the multi-user association schedule information
Or it is variable, wherein Traffic Channel starting time-domain position is according to the implicit determination of control channel end position or by a bit field in DCI
Notify.
Wherein, the determination mode of scheduling time window size is fixed or predefined or system message broadcast (System Information
Broadcast, abbreviation SIB) configure or wireless heterogeneous networks (Radio Resource Control, abbreviation RRC) configuration.
Wherein, base station assembles for user/user's group according to portfolio or user density or coverage enhancement grade and puts continuously or discontinuously
One or more scheduling time windows.
Wherein, the determination mode of control channel region position is notified or RRC configurations for fixed or SIB in scheduling time window.
Wherein, in the scheduling time window control channel region and Traffic Channel district-share or exclusive resource or by high-level signaling or
Physical layer signaling is configured.
Wherein, control channel region Further Division region, dividing mode at least includes one below：Divide UL grant regions
With DL grant regions；Divide single user dispatcher-controlled territory and many/group user scheduling region；Divide unidirectional dispatcher-controlled territory to join with up-downgoing
Close dispatcher-controlled territory；Divide the control channel region corresponding to different coverage enhancement grades.
Wherein, when using up-downgoing combined dispatching information, scheduled upper industry is retransmited after downlink business is finished receiving
Business, wherein, ACK/NACK feedback information of the uplink service comprising downlink business.
According to a further aspect in the invention, there is provided a kind of detection method of Downlink Control Information, the method includes：User equipment
UE detects Downlink Control Information in the control channel region in all or part of scheduling time window, wherein, different covering demands
Different size of control channel region in the scheduling time window or detection scheduling time window of UE detection different lengths.
Wherein, the determination mode of the position of different UE detections scheduling time windows is that RRC is configured or implicit determination.
Wherein, using RRC configurations or wireless according to terminal iidentification (UE ID) and/or cell in units of M scheduling time window
Network Temporary Identifier (C-RNTI) and/or group Radio Network Temporary Identifier (Group-RNTI) calculate scheduling time window position, its
Middle M is positive integer.
Wherein, terminal/set of terminal implies for determining continuously or discontinuously according to portfolio or user density or coverage enhancement grade
Or multiple scheduling time windows.
Wherein, the mode that terminal/set of terminal is detected in control channel region in scheduling time window at least includes one below：
The blind check in control channel region, using each time in control channel regions of the different UE of same scheduling time window in the window
Bit selecting puts blind check；By RRC configurations or by one or more implicit determinations in UE ID, C-RNTI, Group-RNTI
Concrete position candidate in control channel region.
According to another aspect of the invention, there is provided a kind of base station, the base station includes a sending module, in scheduling time
The down control channel of bearing downlink control information is sent in control channel region in window, wherein, corresponding to different covering demands
Down control channel be located at different length scheduling time window or the different size of control channel region in scheduling time window.
The base station also includes a configuration module, for being assembled for UE/UE according to portfolio or user density or coverage enhancement grade
Put one or more scheduling time windows continuously or discontinuously.
In accordance with a further aspect of the present invention, there is provided a kind of user equipment (UE), the UE includes a detection module, for complete
Downlink Control Information is detected in control channel region in portion or partial scheduling time window, wherein, the UE detections of different covering demands
Different size of control channel region in the scheduling time window or detection scheduling time window of different length.
The UE also includes a determining module, for according to portfolio or user density or coverage enhancement grade it is implicit determine it is continuous or
Discrete one or more scheduling time windows.
By the technical scheme provided using the present invention, up-downgoing or multi-user association scheduling are realized, having reached different coverings needs
The effect of terminal multiplexed resource in narrowband systems is sought, control signaling expense and control information detection power consumption is saved, tune is improve
Degree efficiency and user scheduling quantity.
Description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, and the present invention's shows
Meaning property embodiment and its illustrated for explaining the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is up-downgoing time-frequency resource allocating schematic diagram according to embodiments of the present invention；
Fig. 2 is the schematic diagram that base station according to embodiments of the present invention sends schedule information in scheduling time window；
Fig. 3 is the schematic diagram that terminal according to embodiments of the present invention detects schedule information in scheduling time window；
Fig. 4 is UL grant regions according to embodiments of the present invention and DL grant region division schematic diagrames；
Fig. 5 is the schematic diagram that base station according to embodiments of the present invention sends up-downgoing combined dispatching information in scheduling time window；
Fig. 6 is the schematic diagram that base station according to embodiments of the present invention sends multi-subscriber dispatching information in scheduling time window.
Specific embodiment
Below with reference to accompanying drawing and in conjunction with the embodiments describing the present invention in detail.It should be noted that in the case where not conflicting,
The feature in embodiment and embodiment in the application can be mutually combined.
A kind of sending method of Downlink Control Information is provided in the present embodiment, is comprised the steps：
The down control channel of bearing downlink control information is sent in control channel resource region of the base station in scheduling time window.No
Control letter in the scheduling time window of different length or different size of time window is located at the down control channel corresponding to covering demand
Road region.
Further, the Downlink Control Information at least includes one of following schedule information type：Down dispatch information, uplink scheduling
Information, up-downgoing combined dispatching information, multi-user association schedule information.Specifically, down dispatch information accuses that system scheduling is carried
The downlink traffic channel of downlink service data, also referred to as Downlink Control Information or DL grant.Uplink scheduling information refers to control scheduling
Carry the reverse link traffic channel of uplink business data, also referred to as ascending control information or UL grant.Up-downgoing combined dispatching information is
Refer to the downlink traffic channel for controlling scheduling bearing downlink business datum simultaneously and the reverse link traffic channel for carrying uplink business data,
The business datum of the uplink and downlink both direction of referred to as DL＆UL grant or bi-directional scheduling information, i.e. schedule information schedules, phase
The above-mentioned down dispatch information answered and uplink scheduling information are also referred to as unidirectional schedule information, i.e., can only dispatch the business number of single direction
According to.Multi-user association schedule information refers to the Traffic Channel of the carrying business datum for controlling the multiple users of scheduling simultaneously, comprising multiple
User bearing downlink business datum downlink traffic channel and/or carry uplink business data reverse link traffic channel.
Further, the size (size) for dispatching the Downlink Control Information of user special information be include it is following one of several：
Only a kind of little big, its concrete composition form is one of following several ways：
(1) size is made up of down dispatch information with uplink scheduling information direct splicing, i.e. down dispatch information and uplink scheduling
Information consolidation is encoded, and using a CRC bit field, a CRC bit field is only saved in expense, or can be further
Save upstream format and downstream format mark is indicated, such as with permanent order down dispatch information in the posterior side of front uplink scheduling information
Formula determines the relation of relative position between down dispatch information and uplink scheduling information；
(2) increase by 1 or 2bit configured information, indicate that form is that down dispatch information or down dispatch information or up-downgoing joint are adjusted
Degree information, such as 1bit indicate unidirectional schedule information and bi-directional scheduling information, and such as 2bit indicates uplink scheduling information, descending tune
Degree information, up-downgoing schedule information and other.Further, the bit field in unidirectional schedule information is compared to bi-directional scheduling information
In bit domain information can indicate more fine granularity (such as RA, MCS), specifically, under a certain bandwidth condition, unidirectionally
The amount of bits in RA domains is more than the amount of bits in RA domains in bi-directional scheduling information, such as bi-directional scheduling information resources point in schedule information
The smallest particles degree matched somebody with somebody is N number of PRB (block)/subcarrier (block)/subframe (block)/time slot/OFDM symbol (block), accordingly
Unidirectional schedule information resource allocation smallest particles degree be N/2 PRB (block)/subcarrier (block)/subframe (block)/time slot/OFDM
Symbol (block).
(3) common sparing identical parameter, different parameters point UL and DL is indicated respectively, specific such as down dispatch information bag
Include resource allocation RA, Modulation and Coding Scheme MCS, redundancy versions RV, HARQ process number, new data and indicate NDI, transmission
Power Control TPC etc., uplink scheduling information includes resource allocation RA, Modulation and Coding Scheme MCS, cyclic shift and orthogonal code
Sequence number CSS and OCC index, new data indicate NDI, transmitting power control TPC etc., and as above down dispatch information is total to for citing
With RA, MCS, TPC, remaining bit field point UL and DL is indicated respectively；As above down dispatch information shares TPC, remaining
Bit field point UL and DL is indicated respectively.
(4) it is made up of the schedule information direct splicing of N number of user, wherein the user regards one as up-downgoing combined dispatching information
Individual user or uplink scheduling descending scheduling regard two isolated users as also becomes Virtual User.Specifically, when will unidirectionally dispatch letter
When the scheduled business datum of breath regards a user as, then there are a uplink service and a lower industry simultaneously to a physical User
Two users are considered as two unidirectional schedule informations during business, in order to make a distinction referred to as Virtual User, N with physical User
Individual multi-user association schedule information is the direct splicing of N number of unidirectional schedule information, combined coding, using a CRC bit field,
It is preferred that unidirectional unidirectional schedule information is spliced.Regard a user as when the business scheduled in bi-directional scheduling information is transmitted
When, then it is exactly one for a bi-directional scheduling information when physical User has a uplink service and a business in afternoon simultaneously
User, N number of multi-user association schedule information is the direct splicing of N number of bi-directional scheduling information, combined coding, using a CRC
Bit field.
(5) common sparing identical parameter, different parameters point different user is indicated respectively, specific as RA parameters distinguish user
Indicate respectively, remaining parameter is shared, such as RA, MCS, NDI distinguish user and indicate respectively, remaining parameter is shared etc..
(6) single user schedule information, multi-subscriber dispatching information are indicated using identification bit domain.Specifically, such as refered in particular to using 1 ratio
Show single user schedule information and multi-subscriber dispatching information, such as indicate single user uplink scheduling information, the descending tune of single user using 2bit
Degree information, multi-user's uplink scheduling information, multiuser downstream schedule information, such as using 2bit indicate the unidirectional schedule information of single user,
Single user bi-directional scheduling information, the unidirectional schedule information of multi-user, multi-user's bi-directional scheduling information, such as indicate single user using 3bit
Down dispatch information, single user uplink scheduling information, single user bi-directional scheduling information, multiuser downstream schedule information, multi-user
Uplink scheduling information, multi-user's bi-directional scheduling information.
With two kinds of sizes (size), its concrete composition form is one of following several ways：(1) a kind of is bi-directional scheduling information,
A kind of unidirectional schedule information (indicating DL or UL containing flag).It is (2) a kind of (to contain flag and indicate DL or UL) for multi-subscriber dispatching information,
One kind is the unidirectional schedule information of single user (indicating DL or UL containing flag).(3) uplink multi-users schedule information, descending multi-user
Schedule information.
With three kinds of sizes, its concrete composition form is one of following several ways：(1)DL grant、UL grant、DL&UL
Grant uses respectively a kind of size.(2) multi-subscriber dispatching information (indicating DL or UL containing flag), single user DL grant, list
User UL grant.(3) multi-subscriber dispatching information, single user up-downgoing combined dispatching information, the unidirectional schedule information of single user (contain
Flag indicates DL or UL).(4) uplink multi-users combined dispatching information, descending multi-user association schedule information, up-downgoing joint
Multi-subscriber dispatching information.
With four kinds of sizes, concrete composition form is one of following several ways：(1) multiuser downstream schedule information, multi-user
Uplink scheduling information, single user DL grant, single user UL grant.(2) the unidirectional schedule information of single user (is indicated containing flag
DL or UL), single user up-downgoing combined dispatching information, 2*N Virtual User use N number of multi-user association schedule information, N
Individual Virtual User uses N number of multi-user association schedule information.(3) up X1 user scheduling information, up X2 user adjust
Degree information, descending Y1 user scheduling information, descending Y2 user scheduling information.
With k kind sizes, its concrete composition form is one of following several ways：(1)NkIndividual Virtual User schedule information, its
Middle k is predefined value.
Further, resource distribution instruction mode includes at least one in the following manner in the up-downgoing combined dispatching information：
(1) indicate respectively, i.e., include two bit fields of DL RA and UL RA simultaneously.
(2) combined coding：By the status number Unified coding of DL RA and UL RA.Specifically, if all distribution of DL RA
Possibility or status number are A, and all distribution possibilities of UL RA or status number are B, then the bit number of combined coding is
(3) a different RA domain of implication indicates DL RA and UL RA.It is specific that resource is carried out based on time domain as descending
Distribution, up that resource allocation is carried out based on frequency domain, particle distribution degree is subframe for descending, is son for up
Carrier wave.For example shown in Fig. 1,15kHz's is descending, and 2.5kHz's is up, in identical time domain length (such as：Scheduling time window)
In the range of, descending 2 subframes of distribution (distribution least unit is 1 subframe), (distribution is minimum for 24 subcarriers of uplink assignment
Unit is 12 subcarriers), correspondence size identical running time-frequency resource.
(4) resource location starting is only indicated, resource size is implicit to be determined.It is specific such as only to indicate resource original position, it is each to use
The implicit determination mode of resource size shared by family includes：Indicate the total size of resource further according to reality/Virtual User number dispatched etc.
Divide total resources, carry out mapping/corresponding to/select each use according to the MCS and TBS and MCS and resource size mapping table of each user
The resource occupation size at family.
Wherein, in multi-user association schedule information, distinguishing the control information of different user includes fixed/predefined high-level signaling SIB
Or RRC configures the control information order of multiple users, or the control information of different user is indicated using carrying control message head.Gu
Fixed/predefined/high-level signaling SIB or RRC configuration sequence refers to that multiple users are divided into fixed one group according to certain way, passes through
Group-RNTI is identified user's group, carries out all terminals in the group according to the fixation group during combined dispatching and is scheduled, in group
Terminal order is fixed/predefined or configured by SIB or RRC signaling by eNB.When control message head is indicated, terminal is suitable in group
Sequence and/or quantity are not fixed, and are indicated by message header, including：The terminal of identical traffic pattern is divided into one group, and message header indicates the biography
The control information of the corresponding same format of defeated pattern belongs to the identification information or order of different terminals；Terminal during different transmission mode
It is divided into one group, message header distinguishes the expression information or order that the control information of different-format indicates respectively corresponding terminal.It is described
Message header can also be that the form of bitmap indicates that each user DCI positions arrange according to bitmap orders in one group of user, that is, refer to
Show the DCI order group bags that bit is the user corresponding to 1.
Resource indicates that Traffic Channel time domain takes resource size and fixes according to number of users or variable in multi-user association schedule information, its
Middle Traffic Channel starting time-domain position is according to the implicit determination of control channel end position or by a bit field notice in DCI.It is multiplex
Resource indicates that time domain takes resource size and fixes according to number of users in the combined dispatching information of family, i.e. multi-user association schedule information distribution
Total resources size shared by multi-user, is fixed value, and each user accounts for according to the user's order decile indicated in fixation or DCI
Use total resources；Resource indicates that time domain occupancy resource size is variable according to number of users in multi-user association schedule information, i.e. multi-user's connection
Close schedule information and distribute resource size shared by each user, start each user according to fixed from Traffic Channel starting subframe or
The user's order indicated in DCI takes time-domain resource, i.e. Traffic Channel and takes total resources size with number of users and each CU
Resource size it is relevant, be the summation of each CU business datum resource.Traffic Channel starting time-domain position is according to control letter
End position implicit determination in road includes：The subframe or dispatching cycle that transmission DCI terminates is numbering n, then Traffic Channel starting subframe
Or dispatching cycle is numbering n+k, k is preferably greater than 0 positive integer.
Wherein, the determination mode of scheduling time window size can be using fixed or predefined or SIB configurations or RRC configurations.Further
, base station is or many continuously or discontinuously of terminal/set of terminal configuration according to portfolio or user density or coverage enhancement grade
Individual scheduling time window.
The determination mode of the position of different terminals detection scheduling time window is that RRC is configured or implicit determination.It is preferred that with during M scheduling
Between window when being that unit is configured using RRC or calculates specific scheduling according to UE ID and/or C-RNTI and/or Group-RNTI etc.
Between window position.Further terminal/set of terminal implies according to portfolio or user density or coverage enhancement grade and determines continuous or non-company
One or more continuous scheduling time windows.
Specifically, base station side sends schedule information, such as Fig. 2 in each (preferred) scheduling time window or in partial scheduling time window
Shown, the size of scheduling time window is N_DL subframe, and base station is that scheduling is sent in scheduling time window in every N_DL subframe
Information.For terminal, the detection in all scheduling time windows or part (preferred) time window receives schedule information, such as Fig. 3 institutes
Show, terminal 1 and terminal 2 detect schedule information in different part-time windows.Specific detection window position is preferably with M tune
Degree time window is that unit is configured using RRC or calculates specific tune according to UE ID and/or C-RNTI and/or Group-RNTI etc.
Degree time window.Or further terminal/set of terminal according to portfolio or user density or coverage enhancement grade it is implicit determine it is continuous or
Discrete one or more scheduling time windows.Such as, determine that scheduling time window is obtained for C-RNTI mod M by taking C-RNTI as an example
Particular location in M scheduling time window.
Further, the determination mode of control channel region position is notified or RRC configurations for fixed or SIB in scheduling time window.
User or user's group detect that control channel mode at least includes one of in the following manner in control channel region in scheduling time window：
(1) blind check in control area, using each candidate in control areas of the different UE of same scheduling time window in the window
Position blind check.(2) by RRC configurations or by one in UE ID, C-RNTI, Group-RNTI, coverage enhancement grade
Or the concrete position candidate in multiple implicit determination control areas.
Specifically, comprising down control channel region and downlink traffic channel region in scheduling time window.Wherein down control channel
The determination mode of regional location includes：Fixed, SIB configurations, RRC configurations etc..User or the respective control letter of user's group detection
During road, a kind of mode is each Candidate Set of blind check in control area, and wherein base station can only at most send one in a Candidate Set
Downlink Control Information, each Candidate Set position in control area is fixed or variable with different UE, terminal detection Downlink Control Information
The specific control information in Shi Buzhi roads takes Candidate Set position, needs blind check to attempt.Another way is the basis in control area
The implicit Candidate Set position for determining detects that corresponding Candidate Set obtains Downlink Control Information, and the implicit determination mode includes passing through
RRC is configured or by one or more implicit determination controls in UE ID, C-RNTI, Group-RNTI, coverage enhancement grade
Concrete position candidate in region, such as by taking Group-RNTI as an example, in coverage enhancement grade 1, using corresponding polymerization grade
L1, corresponding Candidate Set has N1, then the Candidate Set sequence number (position) for organizing user's detection is Group-RNTI mod N1.
Further, control channel region and Traffic Channel region can share or exclusive resource or by high level in the scheduling time window
Signaling or physical layer signaling are configured.
Specifically, comprising down control channel region and downlink traffic channel region in the scheduling time window, in coverage enhancement field
Jing Shi, each channel needs to repeat transmission with cumlative energy so as to lift covering, therefore the down control channel or downlink business of repetition
Channel can take the resource area of other side in scheduling time window according to actual conditions, or directly by high-level signaling configuration occupancy
The all control areas of control channel occupancy and Traffic Channel region in scheduling time window.Accordingly in transmission services data, business
Channel repeats transmission can also take control region resource in scheduling time window, or take scheduling time window by high-level signaling configuration
Interior Traffic Channel takes all control areas and Traffic Channel region.
Further, the control channel region Further Division region, dividing mode is at least included one of：Fixed partition or
Divided by high-level signaling (SIB, RRC) configuration.
(1) UL grant regions and DL grant regions are divided；In order to prevent cannot dispatching uplink resource, dotted line frame in such as Fig. 4
It is shown, therefore UL grant regions are at least marked off in descending control area.Terminal needs to detect UL grant regions and DL simultaneously
Grant regions select one according to virtual condition.
(2) single user dispatcher-controlled territory and many/group user scheduling region are divided；In order to believe in single user schedule information and multi-subscriber dispatching
Terminal blind check complexity is reduced when ceasing of different sizes, at least ensures that single user schedule information blind check complexity does not increase.In control zone
Single user dispatcher-controlled territory and multi-subscriber dispatching region are divided in domain.Can only detect single without the terminal for being configured to group user
User scheduling region, two regions of terminal for being configured to group user are required for detection.
(3) unidirectional dispatcher-controlled territory and up-downgoing combined dispatching region are divided；In order in unidirectional schedule information and up-downgoing combined dispatching
Terminal blind check complexity is reduced when information is of different sizes, at least ensures that unidirectional schedule information blind check complexity does not increase.In control zone
Unidirectional dispatcher-controlled territory and up-downgoing combined dispatching region are divided in domain.
(4) control channel region corresponding to different coverage enhancement grades is divided；In order to preferably be multiplexed different coverage enhancement grades
Terminal, the control channel region corresponding to different coverage enhancement grades is divided in control channel region can avoid different coverings
Strengthen the terminal of level requirements while obstructing problem when having business transmission demand.The big terminal long-time of such as coverage enhancement grade
Continuously taking all resources can cause the terminal of the low and normal covering of the coverage enhancement grade No Assets when there is data traffic requirement can use,
Further block its transmission.Therefore the end that the corresponding control channel region of different coverage enhancement grades is conducive to different covering demands is divided
End simultaneous transmission.
(5) control channel region corresponding to the difference big small sets of DCI is divided；Difference DCI sizes are supported in order to preferably be multiplexed
The terminal of set, the control channel region in control channel region corresponding to the division difference big small sets of DCI can be avoided need not
The blind check complexity issue wanted.For example not supporting the terminal of group user scheduling need not detect multi-user association schedule information；Only support
The terminal of unidirectional schedule information need not detect up-downgoing combined dispatching information；Only support the end of multi-subscriber dispatching (group scheduling) information
End need not detect single user schedule information etc..Therefore divide the corresponding control channel region of the difference big small sets of DCI to be conducive to supporting
The terminal of the big small set of different DCI avoids unnecessary blind Detecting.
Further, when the control channel region divides UL grant regions with DL grant regions, control channel is covering increasing
When high field scape repeats to transmit, DL grant regions can be further according to the different grades of control area of coverage enhancement grade classification, its
Middle DL grant repeat that all resources in addition to UL grant regions can be taken when transmitting.
Wherein DL regions in order to prevent different coverage enhancement grades terminal simultaneous transmission occur obstruction can be further according to covering
Strengthen grade distinguishing control area, control when DL grant repeat to transmit only in the scheduling time window corresponding to its coverage enhancement grade
Repeatedly transmit in region；Or DL regions are repeated that when transmission takes the institute in addition to UL grant regions can be taken by DL grant
There is resource, that is, take all DL grant regions and Traffic Channel region.
When further, using the up-downgoing combined dispatching information, scheduled uplink service finishes receiving it in downlink business
After retransmit.Wherein uplink service includes the ACK/NACK feedback informations of downlink business.Specifically, it is upper for terminal
For descending combined dispatching information can simultaneously schedule upstream traffic and downlink business, in order to faster and efficiently obtain descending
Business transmits the information of correctness, transmits uplink service again preferably after downlink traffic transmission, now includes in uplink service
The ACK/NACK feedback informations of shown downlink business, the feedback information and uplink service information with absolute coding or can mix volume
Code or hierarchical modulation, are carried among reverse link traffic channel.Scheduled uplink service after downlink business is finished receiving again
Send, send in a uplink scheduling time window of the preferred uplink service after and then downlink business.
The embodiment provides a kind of detection method of Downlink Control Information, the method is comprised the following steps：
Terminal detects Downlink Control Information in the control channel region in all or part of scheduling time window.Different covering demands
Control channel region in the scheduling time window or different size of time window of terminal detection different length.
Wherein, in the present embodiment, the determination mode of the position of different UE detections scheduling time windows is that RRC is configured or implicit true
It is fixed.
Wherein, in the present embodiment, using RRC configurations or according to UE ID and/or C-RNTI in units of M scheduling time window
And/or Group-RNTI calculates the scheduling time window position, wherein M is positive integer.
Wherein, in the present embodiment, terminal/set of terminal implies according to portfolio or user density or coverage enhancement grade and determines continuously
Or discrete one or more scheduling time windows.
Wherein, in the present embodiment, the mode that terminal/set of terminal is detected in control channel region in the scheduling time window
At least include one below：The blind check in the control channel region, using the different UE of same scheduling time window in the window
Each position candidate blind check in control channel region；By RRC configurations or by UE ID, C-RNTI, Group-RNTI
In one or more it is implicit determine control channel regions in concrete position candidates.
Embodiment 1
The present embodiment is described in detail explanation to the transmission of up-downgoing combined dispatching using method provided by the present invention.
ENB passes through high-level signaling (such as：SIB) size N_DL of configuration schedules time window is 30ms, i.e. 1ms subframes are continuous
30.In each scheduling time window, control area configures its resource size by high-level signaling.
As shown in figure 5, for UE1, certain Candidate Set in control areas of the eNB in its scheduling time being located window sends
Its up-downgoing combined dispatching information, i.e., send in scheduling time window 1.For UE2, eNB sends in scheduling time window 2
Its up-downgoing combined dispatching information.Downlink business scheduled in up-downgoing combined dispatching information be located at after a descending scheduling when
Between in window, uplink service is located in a uplink scheduling time window after downlink business.Now uplink scheduling time window with it is descending
Scheduling time window length is identical.
Terminal implies according to respective C-RNTI or UE ID and obtains scheduling time window to be detected and then detect respective upper and lower
Row combined dispatching information, wherein UE1 calculates the test position that (C-RNTI mod M, wherein M=3) obtains scheduling time window
Be numbering be 1,4,7 ... scheduling time window, UE2 be calculated the test position of scheduling time window be numbering be 2,5,
8th ... scheduling time window }.
UE1 in scheduling time window 1 according to the C-RNTI of oneself in control area possible Candidate Set blind Detecting, obtain oneself
Up-downgoing schedule information.Downlink business information is received in back to back scheduling time window according to schedule information, in downlink business
Uplink service information is sent in a uplink scheduling time window after the time window of channel place, is wherein included in uplink service information
The feedback information of its downlink business information.C-RNTIs of the UE2 according to oneself in scheduling time window 2 is possible in control area
Candidate Set blind Detecting, obtains the up-downgoing schedule information of oneself.Under being received in back to back scheduling time window according to schedule information
Row business information, sends uplink service information in a uplink scheduling time window after the time window of downlink traffic channel place,
Feedback information comprising its downlink business information wherein in uplink service information.
By using the transmission method of downlink information proposed by the invention, the effect of up-downgoing combined dispatching is reached, saved control
Dispatching efficiency and user scheduling quantity are improve while expense processed and resource.
Embodiment 2
The present embodiment is described in detail explanation to multi-user association scheduled transmission using method provided by the present invention.
ENB passes through high-level signaling (such as：SIB) size N_DL of configuration schedules time window is 6ms, i.e. 1ms subframes continuous 6
It is individual.In each scheduling time window, control area configures its resource size by high-level signaling.
As shown in fig. 6, for Group 1, certain Candidate Set in control areas of the eNB in its scheduling time being located window is sent out
Its multi-subscriber dispatching information is given, i.e., is sent in scheduling time window 1.For Group 2, eNB sends in scheduling time window 2
Its multi-subscriber dispatching information.Up-downgoing combined dispatching information of include per family, and scheduled downlink business are used at this point for each
In a descending scheduling time window after, uplink service is located in a uplink scheduling time window after downlink business.
Now uplink scheduling time window is identical with descending scheduling time window length.
Scheduled multi-user Group 1 includes user 1 to N, and resource occupation order is used, i.e. downlink traffic channel PDSCH
Order uses sub-frame resources, reverse link traffic channel PUSCH orders to use sub-carrier resources.
The Group-RNTI or group mark of user's group of the terminal according to belonging to each etc. are implicit to obtain scheduling time window to be detected
And then respective up-downgoing combined dispatching information in multi-subscriber dispatching information is detected, wherein Group 1 calculates (Group-RNTI mod
M, wherein M=4) obtain scheduling time window test position be numbering be 1,5,9 ... scheduling time window, Group 2
The test position for being calculated scheduling time window be numbering be 3,7,11 ... scheduling time window.
UE1 in scheduling time window 1 according to the Group-RNTI of oneself place group in control area possible Candidate Set blind Detecting,
The multi-subscriber dispatching information of this user's group is obtained, and then the up-downgoing scheduling letter of oneself is obtained according to predefined order or C-RNTI etc.
Breath.Downlink business information is received in back to back scheduling time window according to schedule information, in downlink traffic channel place time window
Uplink service information is sent in a uplink scheduling time window afterwards, its downlink business information is included wherein in uplink service information
Feedback information.UE N may in control area according to the Group-RNTI of oneself place group equally in scheduling time window 1
Candidate Set blind Detecting, obtain the multi-subscriber dispatching information of this user's group, so according to predefined order or C-RNTI etc. obtain from
Oneself up-downgoing schedule information.Downlink business information is received in back to back scheduling time window according to schedule information, in lower industry
Uplink service information is sent in a uplink scheduling time window after the time window of business channel place, is wrapped wherein in uplink service information
Feedback information containing its downlink business information.
By using the transmission method of downlink information proposed by the invention, the effect of multi-user association scheduling is reached, saved control
Dispatching efficiency and user scheduling quantity are improve while expense processed and resource.
Embodiment 3
The present embodiment is described in detail explanation to the transmission of up-downgoing combined dispatching using method provided by the present invention.
ENB passes through high-level signaling (such as：SIB) size N_DL of configuration schedules time window is 30ms, i.e. 1ms subframes are continuous
30.In each scheduling time window, control area configures its resource size by high-level signaling.
ENB is notified according to controlling area size in coverage enhancement grade classification scheduling time window by high-level signaling.Division side
Formula includes：Certain control area is reserved for every kind of coverage enhancement grade, or at least non-covered enhanced scene is reserved certain
Control area, or be allocated to big coverage enhancement grade under extreme case entirely.ENB notifies that dividing mode is by high-level signaling
Certain control area is reserved for every kind of coverage enhancement grade.
For UE1 is in coverage enhancement grade 2, corresponding to coverage enhancement grades 2 of the eNB in its scheduling time being located window
Control area in all resources send its up-downgoing combined dispatching information, i.e. covering in scheduling time window 1,4,7,10
Send in control area corresponding to lid enhancing grade 2.For UE2 is in normal covering, eNB in scheduling time window 2 just
Certain Candidate Set often covered in corresponding control area sends its up-downgoing combined dispatching information, i.e., in scheduling time window 1
Big coverage enhancement grade corresponding to control area in send.Downlink business scheduled in up-downgoing combined dispatching information is located to be adjusted
Degree information transfer complete after a descending scheduling time window in, uplink service positioned at downlink traffic transmission complete after one
In uplink scheduling time window.Now uplink scheduling time window is identical with descending scheduling time window length.
Terminal implies according to respective C-RNTI or UE ID and obtains scheduling time window to be detected and then detect respective upper and lower
Row combined dispatching information, wherein UE1 calculates the test position that (C-RNTI mod M, wherein M=3) obtains scheduling time window
Be numbering be 1,4,7 ... scheduling time window, UE2 be calculated the test position of scheduling time window be numbering be 2,5,
8th ... scheduling time window }.
UE1 in coverage enhancement grade 2 in scheduling time window { 1,4,7,10 } according to the C-RNTI of oneself in coverage enhancement
Detect in control area corresponding to grade 2, obtain the up-downgoing schedule information of oneself.Complete in and then transmitting scheduling information
Downlink business information is received in scheduling time window afterwards, in after downlink traffic channel is transmitted a uplink scheduling time window
Uplink service information is sent, the feedback information comprising its downlink business information wherein in uplink service information.UE2 is in scheduling time
In window 2 according to the C-RNTI of oneself in control area possible Candidate Set blind Detecting, obtain the up-downgoing schedule information of oneself.
Downlink business information is received in back to back scheduling time window according to schedule information, after the time window of downlink traffic channel place
A uplink scheduling time window in send uplink service information, it is anti-comprising its downlink business information wherein in uplink service information
Feedforward information.
By using the transmission method of downlink information proposed by the invention, the effect of up-downgoing combined dispatching, same time zone have been reached
Divide different coverage enhancement class users, avoid different coverage enhancement class users from blocking while saving control overhead and resource,
Improve dispatching efficiency and user scheduling quantity.
Additionally provide a kind of base station and terminal (UE) in the present embodiment, the base station and terminal are used to realizing above-described embodiment and preferably
Embodiment, had carried out repeating no more for explanation.As used below, term " module " can realize predetermined function
Software and/or hardware combination.Although the device described by following examples is preferably realized with software, hardware, or
The realization of the combination of person's software and hardware is also may and to be contemplated.
The down control channel of bearing downlink control information is sent in control channel region of the base station in scheduling time window, wherein,
Down control channel corresponding to different covering demands is located at the scheduling time window or the difference in scheduling time window of different length
The control channel region of size.
The terminal detects Downlink Control Information in the control channel region in all or part of scheduling time window, wherein, difference is covered
Different size of control channel region in the scheduling time window or detection scheduling time window of the UE detection different lengths of lid demand.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general calculating
Realizing, they can be concentrated on single computing device device, or be distributed on the network that multiple computing devices are constituted,
Alternatively, they can be realized with the executable program code of computing device, it is thus possible to be stored in storage device
In performed by computing device, and in some cases, can be performing shown or described step different from order herein
Suddenly, each integrated circuit modules or by them is fabricated to respectively, or the multiple modules or step in them is fabricated to single
Integrated circuit modules are realizing.So, the present invention is not restricted to any specific hardware and software combination.
In another embodiment, a kind of software for sending for Downlink Control Information and detecting is additionally provided, the software is used for
Perform the technical scheme described in above-described embodiment.
In another embodiment, a kind of storage medium is additionally provided, be stored with above-mentioned software in the storage medium, the storage
Medium includes but is not limited to CD, floppy disk, hard disk, scratch pad memory etc..
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for those skilled in the art
For, the present invention can have various modifications and variations.All any modifications within the spirit and principles in the present invention, made, etc.
With replacement, improvement etc., should be included within the scope of the present invention.
Claims (24)
1. a kind of sending method of Downlink Control Information, it is characterised in that include：
The descending control letter of bearing downlink control information is sent in control channel region of the base station in scheduling time window
Road, wherein, the down control channel corresponding to different coverage enhancement grades be located at different length scheduling time window or
Different size of control channel region in scheduling time window.
2. method according to claim 1, it is characterised in that the Downlink Control Information is at least included with dispatching letter
One of breath type：Down dispatch information, uplink scheduling information, up-downgoing combined dispatching information, multi-user association are adjusted
Degree information.
3. method according to claim 2, it is characterised in that the amount of bits of the Downlink Control Information is one kind,
The composition form of the Downlink Control Information includes one below：
Directly it is made up of with uplink scheduling information down dispatch information；
Indicate that form is down dispatch information or down dispatch information or up-downgoing combined dispatching letter using configured information
Breath；
The schedule information is up-downgoing combined dispatching information, and shares uplink scheduling information and down dispatch information
Middle part identical parameter, different piece indicates respectively uplink and downlink with different parameters；
Directly it is made up of the schedule information of N number of user, wherein, N is positive integer, and the user is up-downgoing joint
Schedule information is used as a user, or the user is uplink scheduling and descending tune in up-downgoing combined dispatching information
Degree is used as two isolated users；
The schedule information is multi-subscriber dispatching information, and shares part identical parameter in single user schedule information,
Different piece indicates respectively different user with different parameters；
Single user schedule information and multi-subscriber dispatching information are indicated using configured information.
4. method according to claim 2, it is characterised in that the amount of bits of the Downlink Control Information is two kinds,
The composition form of the Downlink Control Information includes one below：
Bi-directional scheduling information, unidirectional schedule information；
Uplink multi-users schedule information, downlink multi-user scheduling information；
The unidirectional schedule information of multi-subscriber dispatching information, single user.
5. method according to claim 2, it is characterised in that the amount of bits of the Downlink Control Information is three kinds,
The composition form of the Downlink Control Information includes one below：
Down dispatch information, uplink scheduling information, up-downgoing combined dispatching information use respectively a kind of amount of bits；
Multi-subscriber dispatching information, single user up-downgoing combined dispatching information, the unidirectional schedule information of single user；
Uplink multi-users combined dispatching information, descending multi-user association schedule information, up-downgoing joint multi-subscriber dispatching
Information；
Multi-subscriber dispatching information, single user down dispatch information, single user uplink scheduling information are respectively using a kind of ratio
Special quantity.
6. method according to claim 2, it is characterised in that when the amount of bits of the Downlink Control Information is four kinds,
The composition form of the Downlink Control Information includes one below：
In multiuser downstream schedule information, multi-user's uplink scheduling information, single user down dispatch information, single user
Row schedule information；
The unidirectional schedule information of single user, single user up-downgoing combined dispatching information, 2*N Virtual User use N number of
Multi-user association schedule information, N number of Virtual User use N number of multi-user association schedule information, and wherein N is just whole
Number；
The unidirectional schedule information of single user, single user up-downgoing combined dispatching information, 2*N Virtual User use N number of
Multi-user association schedule information, N number of Virtual User use N number of multi-user association schedule information, and wherein N is just whole
Number.
7. method according to claim 2, it is characterised in that resource allocation refers in the up-downgoing combined dispatching information
Show that mode includes at least one of：
Up-downgoing is indicated respectively, comprising downlink resource distribution and ascending resource two bit fields of distribution；
Up-downgoing combined coding, by downlink resource distribution and the status number Unified coding of ascending resource distribution；
A different resource allocation field indicating downlink resource allocation of implication and ascending resource distribute；
Resource location starting is only indicated, resource size is implicit to be determined.
8. method according to claim 2, it is characterised in that different using is distinguished in the multi-user association schedule information
The control information at family includes one below：
Fixed or predefined or high-level signaling SIB or RRC configure the control information order of multiple users；
Carry the control information that control message head indicates different user.
9. method according to claim 2, it is characterised in that resource indicates industry in the multi-user association schedule information
Business channel time domain take resource size fixed according to number of users or variable, wherein Traffic Channel starting time-domain position according to
Control channel end position is implicit to be determined or by a bit field notice in DCI.
10. method according to claim 1, it is characterised in that the determination mode of the scheduling time window size is to fix
Or predefined or SIB configurations or RRC configurations.
11. methods according to claim 10, it is characterised in that the base station is according to portfolio or user density or covers
It is user/user's group configuration one or more scheduling time windows continuously or discontinuously that lid strengthens grade.
12. methods according to claim 1, it is characterised in that control channel region position in the scheduling time window
Determination mode is notified or RRC configurations for fixed or SIB.
13. methods according to claim 12, it is characterised in that control channel region and industry in the scheduling time window
Business channel region is shared or exclusive resource or configured by high-level signaling or physical layer signaling.
14. methods according to claim 12, it is characterised in that the control channel region at least includes region below
One of building form：
Uplink scheduling information region and down dispatch information region；
Single user dispatcher-controlled territory and many/group user scheduling region；
Unidirectional dispatcher-controlled territory and up-downgoing combined dispatching region；
Control channel region corresponding to different coverage enhancement grades；
Control channel region corresponding to the big small set of different DCI.
15. methods according to claim 2, it is characterised in that during using the up-downgoing combined dispatching information, under
Industry business retransmits scheduled uplink service after finishing receiving, wherein, uplink service includes downlink business
ACK/NACK feedback informations.
A kind of 16. detection methods of Downlink Control Information, it is characterised in that
User equipment (UE) detects Downlink Control Information in the control channel region in all or part of scheduling time window,
Wherein, it is different big in the scheduling time window or detection scheduling time window of the UE detection different lengths of different covering demands
Little control channel region.
17. methods according to claim 16, it is characterised in that the determination of the position of different UE detections scheduling time windows
Mode is that RRC is configured or implicit determination.
18. methods according to claim 17, it is characterised in that matched somebody with somebody using RRC in units of M scheduling time window
Put or the scheduling time window position, wherein M are calculated according to UE ID and/or C-RNTI and/or Group-RNTI
For positive integer.
19. methods according to claim 17, it is characterised in that user/user's group according to portfolio or user density or
Coverage enhancement grade implies one or more the scheduling time windows for determining continuously or discontinuously.
20. methods according to claim 16, it is characterised in that user or user's group are in the scheduling time window internal control
The mode detected in channel region processed at least includes one below：
The blind check in the control channel region, using controls of the different UE of same scheduling time window in the window
Each position candidate blind check in channel region；
By RRC configurations or by one or more implicit determination controls in UE ID, C-RNTI, Group-RNTI
Concrete position candidate in channel region processed.
21. a kind of base stations, it is characterised in that include：
Sending module, for sending under bearing downlink control information in the control channel region in scheduling time window
Row control channel, wherein, the down control channel corresponding to different coverage enhancement grades is located at the scheduling of different length
Time window or the different size of control channel region in scheduling time window.
22. base stations according to claim 21, it is characterised in that the base station also includes：
Configuration module, for being connected for user/user's group configuration according to portfolio or user density or coverage enhancement grade
Continuous or discrete one or more scheduling time windows.
23. a kind of user equipment (UE)s, it is characterised in that include：
Detection module, for detecting the descending control in the control channel region in all or part of scheduling time window
Information processed, wherein, when the scheduling time window of the UE detection different lengths of different coverage enhancement grades or detection scheduling
Between different size of control channel region in window.
24. UE according to claim 23, it is characterised in that include：
Determining module, determines continuously or discontinuously for being implied according to portfolio or user density or coverage enhancement grade
One or more scheduling time windows.
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