CN102938934B - A kind of resource allocation method and device of control channel information - Google Patents
A kind of resource allocation method and device of control channel information Download PDFInfo
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Abstract
The invention discloses a kind of resource allocation method of control channel and device, for solving enhanced down control channel ePDCCH configuration and sending problem.Network side using aperiodic triggering mode by Downlink Control Information increased N number of bit trigger receiving side in the blind check of physical downlink control channel PDCCH region or receive conventional physical down control channel tPDCCH, or in the blind check of Physical Downlink Shared Channel PDSCH region or receive enhancing Physical Downlink Control Channel ePDCCH；And/or network side indicates that receiving side needs the ePDCCH of the PDSCH region of blind check time domain and/or frequency domain position scope by the way of aperiodic triggering.The present invention can make ePDCCH obtain sufficient frequency diversity gain and scheduling gains, in the case of increase ePDCCH blind check space, without blind check complexity, and the change of ePDCCH blind check space-movables state is significantly increased, enhance dispatching flexibility.
Description
Technical field
The present invention relates to Long Term Evolution advanced system (Long Term Evolution Advanced system, LTE-
Advanced), specifically, it is to be related to a kind of resource allocation method and device of control channel information in LTE-Advanced.
Background technology
In order to be measured to the quality of channel and the data symbol to blind check or reception in LTE Release8/9
It is demodulated and devises CRS (Common Reference Signal, public reference signal), UE (User Equipment, is used
Family equipment) measurement of channel can be carried out by CRS, so as to determine that UE carries out cell reselection and being switched to Target cell, and
The measurement of channel quality is carried out in UE connection status, when disturbing rank higher, physical layer can pass through the wireless of high-rise correlation
Link connection failed signaling disconnects.In order to further improve the average availability of frequency spectrum of cell and cell side in LTER10
The throughput of the edge availability of frequency spectrum and each UE, respectively define two kinds of reference signals：(channel information is with reference to letter by CSI-RS
Number) and DMRS (demodulated reference signal), wherein, CSI-RS is used for the measurement of channel, can be calculated by the measurement to CSI-RS
Go out PMI (Precoding Matrix Indicator, pre-coding matrix index), CQI (Channel that UE needs to feed back to eNB
Quality Indicator, channel quality information instruction) and RI (Rank Indicator, order instruction).DMRS is used for descending
The demodulation of shared channel, using DMRS demodulation the method for wave beam can be utilized to reduce dry between different receiving sides and different districts
Disturb, and hydraulic performance decline caused by code book granularity can be reduced, and reduce opening for descending control signaling to a certain extent
Pin (because not having to additional PMI overhead bit in Physical Downlink Control Channel).
Physical Downlink Control Channel is mainly distributed on 1 either 2 or 3 before a subframe in LTE R8, R9 and R10
On OFDM (OFDM) symbol, specific distribution needs to configure according to the port number of different subframe type and CRS,
As shown in table 1.
Table 1：PDCCH OFDM symbol number
Each receiving side needs to carry out blind check, the original position of blind check and the element number of control channel in first three symbol
It is relevant from the wireless network temporary identifications and different control information for distributing to receiving side.Control information can be typically divided into publicly-owned
Control information and proprietary control information, publicly-owned control information are typically placed in the public search space of Physical Downlink Control Channel,
Proprietary control can be placed on public search space and dedicated search space.Receiving side after blind check or present sub-frame whether
Public system message, descending scheduling or uplink scheduling information be present.Because this Downlink Control Information does not mix automatic weight
Request (HARQ) feedback is passed, so needing to ensure that the bit error rate of detection is low as far as possible.
Under LTE R10 heterogeneous networks, because different base station type has stronger interference, it is contemplated that macro base station (Macro
ENodeB) interference problem to micro-base station (Pico) and Home eNodeB (Home eNodeB) are to macro base station (Macro eNodeB)
Interference problem, it is proposed that solve the problem that interferes between different type base station using the silent method of resource, specifically
Resource silence method can be divided into silence (Muting) method based on subframe, such as：ABS(Almost Blank
Subframe, empty frame) method, the method based on resource element, such as：CRS silence methods.
Above method not only adds the waste of resource, and brings great limitation for scheduling, is particularly examining
When considering Macro eNodeB ABS configurations, if Pico distribution is more, the ABS of Macro eNodeB configurations is more, so meeting
Brought greater impact to Macro eNodeB, the wasting of resources can be increased while add scheduling delay.And believe for control
Road can reduce the interference of different control channel data resources under ABS, but can not solve the dry of CRS resources and data resource
Problem is disturbed, can not solve interference between data resource for silent CRS method, and this method backwards compatibility is not
It is good, while adding access delay, it may be necessary to more standardization efforts.
More users may be introduced in the LTE R11 stages to be sent out in Multicast Broadcast Single Frequency Network (MBSFN) subframe
Send, will so cause MBSFN to configure the off-capacity for the physical downlink control channel PDCCH that 2 OFDM symbols can carry,
In order to ensure to the backwards compatibility of R8/R9/R10 user, it is necessary to be opened up in Physical Downlink Shared Channel PDSCH resources new
The resource of control information is transmitted, the channel of bearing downlink control information is referred to as enhanced Physical Downlink Control Channel on the PDSCH
(enhanced PDCCH, hereinafter referred to as ePDCCH), and COMP technologies are introduced in the R11 stages, this technology can pass through
The mode of space division solves the interference problem between this different type cell, and saves resource overhead, avoids silent band
The wasting of resources come, reduces the limitation to scheduling.Can not be by the method for space division but be in the way of current time domain PDCCH
Solve this problem, and it is necessary in view of the backwards compatibility to R8 and R9, the mode of this control channels of time domain PDCCH
Retain, at this moment how to need to carry out careful research come the interference solved between control channel using spatial division technology.
For ePDCCH in order to obtain preferable frequency diversity gain and scheduling gains, it is necessary to which the blind check for improving ePDCCH is empty
Between, but the increase in blind check space can cause the increase of receiving side blind check complexity again, it is contemplated that the scheduling to system is flexible
The blind check complexity of degree and receiving side needs to introduce the scheme of compromise.
The content of the invention
In view of this, it is a primary object of the present invention to provide the resource allocation method and device of a kind of control channel, use
In the configuration for solving enhanced Physical Downlink Control Channel ePDCCH and send problem.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of resource allocation method of control channel, this method include：
Technical scheme 1：Network side passes through increased N number of bit (N in Downlink Control Information using aperiodic triggering mode
For the positive integer more than 0) it is descending in the blind check of physical downlink control channel PDCCH region or reception conventional physical to trigger receiving side
Control channel tPDCCH, or in the blind check of Physical Downlink Shared Channel PDSCH region or receive enhancing Physical Downlink Control Channel
ePDCCH；And/or
Network side using by the way of aperiodic triggering come indicate receiving side need the ePDCCH of the PDSCH region of blind check when
Domain and/or frequency domain position scope.
Wherein, tPDCCH is the Downlink Control Information that blind check is carried out in PDCCH region.
Technical scheme 2：Technical scheme 1 is preferably based on, network side increases in the Downlink Control Information in n-th of subframe
Add 1 bit to trigger PDSCH region blind check or reception ePDCCH of the receiving side in (n+1)th subframe.
Technical scheme 3：Technical scheme 1 is preferably based on, network side increases in the Downlink Control Information in n-th of subframe
Add 1 bit to trigger PDSCH region blind check in continuous or equally spaced m subframe of the receiving side after n-th of subframe or connect
EPDCCH is received, wherein described continuous or equally spaced m subframe is notified by the radio resource control RRC signaling method of high level
Receiving side.
Technical scheme 4：Technical scheme 1 is preferably based on, network side increases in the Downlink Control Information in n-th of subframe
Add X bits (X ＞ 1) to trigger the PDSCH region in continuous or equally spaced m subframe of the receiving side after n-th of subframe
Blind check or receive ePDCCH, the increased X bits by described continuous or equally spaced m subframe indication signaling bit with
Formed after the bit combined coding that triggering ePDCCH is received.
Technical scheme 5：Technical scheme 1 is preferably based on, network side increases in the Downlink Control Information in n-th of subframe
Add 1 bit to trigger PDSCH region blind check or reception ePDCCH of the receiving side in the n-th+k subframes, wherein the k is mixing
The timed interval of HARQ HARQ processes.
Technical scheme 6：Technical scheme 1 is preferably based on, network side increases in the Downlink Control Information in n-th of subframe
Add 1 bit to trigger the PDSCH region blind check in continuous or equally spaced m subframe of the receiving side after the n-th+k subframes
Or ePDCCH is received, wherein, described continuous or equally spaced m subframe notifies to connect by the way of high-level signaling RRC notices
Side is received, the k is the timed interval of hybrid automatic repeat-request HARQ processes.
Technical scheme 7：Technical scheme 1 is preferably based on, network side increases in the Downlink Control Information in n-th of subframe
Add X bits (X ＞ 1) to trigger the PDSCH areas in continuous or equally spaced m subframe of the receiving side after the n-th+k subframes
Domain blind check or receive ePDCCH, the increased X bits by described continuous or equally spaced m subframe indication signaling bit
Formed after the bit combined coding received with triggering ePDCCH, when the k is the timing of hybrid automatic repeat-request HARQ processes
Between be spaced.
Technical scheme 8：Technical scheme 1 is preferably based on, network side divides full bandwidth according to different system bandwidths
Increase Y (Y ＞ 1) bit into several parts, in Downlink Control Information of the network side in n-th of subframe to trigger receiving side to exist
Which fractional bandwidth blind check of the full bandwidth PDSCH region in the n-th+k subframes receives ePDCCH, and wherein k value is equal to zero
Or the timed interval for HARQ processes.
Technical scheme 9：Technical scheme 8 is preferably based on, if described be divided into full bandwidth according to different system bandwidths
Dry part is specially：System bandwidth is divided into four parts, is respectively：
When system bandwidth is N1 megahertzs~N2 megahertzs, the bandwidth number of division is S1；
When system bandwidth is N2+1 megahertzs~N3 megahertzs, the bandwidth number of division is S2；
When system bandwidth is N3+1 megahertzs~N4 megahertzs, the bandwidth number of division is S3；
When system bandwidth is N4+1 megahertzs~N5 megahertzs, the bandwidth number of division is S4；
Wherein N1, N2, N3, N4, N5, S1, S2, S3, S4 are the positive integer more than 0, and Y bit number is according to different band
It is wide and different.
Technical scheme 10：Technical scheme 1 is preferably based on, network side notifies receiving side ePDCCH's by high-level signaling
Time domain and/or frequency domain position are preselected, and the pre-selection frequency domain position is divided into A part, network side is in n-th of subframe
Downlink Control Information in increaseBit triggers the portion of pre-selection frequency domain resource of the receiving side in the n-th+k subframes
Divide frequency domain position blind check or receive ePDCCH blind checks or reception, wherein k value is equal to zero or the timing for HARQ processes
Interval.
The present invention also provides a kind of device for allocating resources of control channel, and the device includes：
Configuration module, tPDCCH or ePDCCH mode is received for configuring triggering receiving side, and the mode includes：Pass through
Increased N number of bit (N is the positive integer more than 0) triggers receiving side in Physical Downlink Control Channel in Downlink Control Information
PDCCH region blind check receives conventional physical down control channel tPDCCH, or triggering receiving side is in Physical Downlink Shared Channel
PDSCH region blind check receives enhancing Physical Downlink Control Channel ePDCCH；And/or referred to by the way of the aperiodic triggering
Show that receiving side needs the ePDCCH of the PDSCH region of blind check time domain and/or frequency domain position scope；
Sending module, send tPDCCH in PDCCH region for the configuration according to configuration module or sent in PDSCH region
ePDCCH。
It is sufficient that the resource allocation method and device of a kind of control channel proposed by the present invention can make it that ePDCCH is obtained
Frequency diversity gain and scheduling gains, ePDCCH blind check space is added, and without the increase of obvious blind check complexity, and
And can realize that the dynamic in ePDCCH blind checks space changes, enhance dispatching flexibility.
Brief description of the drawings
Fig. 1 is the resource allocation method flow chart for the control channel that the embodiment of the present invention 1 provides；
Fig. 2 is a kind of device for allocating resources of control channel provided by the invention.
Embodiment
It is by the following examples and referring to the drawings, right for the object, technical solutions and advantages of the present invention are more clearly understood
The present invention is further described.
For the sake of clarity, Downlink Control Information (the Downlink Control that the present invention will be sent in PDCCH region
Information, DCI) it is referred to as conventional physical down control channel (Traditional PDCCH, tPDCCH), will be in PDSCH
The Downlink Control Information that region is sent is referred to as strengthening Physical Downlink Control Channel ePDCCH.
The basic thought of the present invention is that network side is passed through increased in Downlink Control Information using aperiodic triggering mode
N number of bit (N ＞ 0, N are positive integer) is traditional in the blind check of physical downlink control channel PDCCH region or reception to trigger receiving side
Physical Downlink Control Channel tPDCCH, or in the blind check of Physical Downlink Shared Channel PDSCH region or receive enhancing physical down control
Channel ePDCCH processed；And/or
Network side using by the way of aperiodic triggering come indicate receiving side need the ePDCCH of the PDSCH region of blind check when
Domain and/or frequency domain position scope.
Wherein PDCCH region refer to PCFICH instructions can be used for transmitting before Downlink Control Information 1 or 2 or
3 OFDM symbols of person, PDSCH region refer to one in addition to PDCCH region for transmitting downlink service data information
OFDM symbol in subframe.
Signified subframe, which refers both to receiving side, in the content of the invention can be used for receiving PDCCH or ePDCCH subframe.
The present invention is described in detail by the following examples, in the case where not conflicting, to reach the object of the invention,
Following examples can be mutually combined.
Embodiment one：
Network side is needed by increasing N-bit in Downlink Control Information DCI for triggering the receiving side in next subframe
Will be in PDCCH region blind check tPDCCH still in PDSCH region blind check ePDCCH.Specific method is as shown in Figure 1：
After step 101, receiving side access network success, network side selects information to determine according to Downlink Control Information DCI's
It is scheduled on PDCCH region and sends tPDCCH still in PDSCH region transmission ePDCCH；
When receiving side accesses network, system broadcasts schedule information etc. is obtained in PDCCH region.Receiving side access network into
After work(, network side can according to the environment residing for receiving side, the channel situation of receiving side, system down control channel load
Select information to determine to send DCI (tPDCCH) in PDCCH region Deng DCI or send DCI (ePDCCH) in PDSCH region.
Step 102, network side by Downlink Control Information increased N number of bit trigger receiving side in PDCCH areas
Domain blind check receives tPDCCH, or in PDSCH region blind check or receives ePDCCH；
Network side can select information according to described DCI, be sent in n-th of subframe triggering in (n+1)th subframe
EPDCCH, receiving side n-th of subframe blind check or receive network side transmission triggering information, next height can be informed in
Blind check ePDCCH is needed in frame, if not having blind check in next subframe to ePDCCH, continues blind check in subframe afterwards
TPDCCH, until next time, network side sends ePDCCH triggering information.N is 1 in the embodiment, represents to adopt when the bit is 0
With tPDCCH modes, i.e., tPDCCH is sent in PDCCH region, when being 1 to bit, expression uses ePDCCH modes, that is, exists
PDSCH region sends ePDCCH.
Embodiment two：
Network side is used to refer to the receiving side need in next subframe by increasing by 1 bit in Downlink Control Information DCI
Will be in PDCCH region blind check DCI still in PDSCH region blind check DCI.When receiving side accesses network, consider to obtain in PDCCH region
Obtain system broadcasts schedule information etc..Receiving side access network success after, network side can according to the environment residing for receiving side, connect
The DCI such as the load of down control channel of channel situation, system of side are received to select information to determine to send DCI in PDCCH region
(tPDCCH) or in PDSCH region DCI (ePDCCH) is sent.
Network side can select information according to described DCI, and the subframe after n-th of subframe triggers n-th of subframe is sent
ePDCCH.Receiving side n-th of subframe blind check or receive network side transmission triggering information, later son can be informed in
Blind check ePDCCH is needed in frame, until the triggering information of network side change next time.When increased 1 bit of institute is 0, represent to use
TPDCCH modes, represent to use ePDCCH modes when being 1.
Embodiment three：
Network side uses ePDCCH by reusing Downlink Control Information DCI, such as DCI Format 1C to trigger receiving side
Mode blind check receives Downlink Control Information.
When receiving side accesses network, consider to obtain system broadcasts schedule information etc. in PDCCH region.In receiving side access network
After network success, network side can according to environment residing for receiving side, the channel situation of receiving side, system down control channel
The DCI such as load are selected information to determine to send DCI (tPDCCH) in PDCCH region or are sent DCI in PDSCH region
(ePDCCH)。
Network side can select information according to described DCI, and the subframe after n-th of subframe triggers n-th of subframe is sent
ePDCCH.Receiving side n-th of subframe blind check or receive network side transmission triggering information, later son can be informed in
Blind check ePDCCH is needed in frame, the release DCI signalings until receiving network side transmission.After receiving side receives release DCI signalings,
Receiving side is using the blind check of tPDCCH modes or receives Downlink Control Information.
Example IV：
Network side is used for triggering connecing in next subframe by increasing X (X ＞ 1) bit in Downlink Control Information DCI
Receiving side needs in PDCCH region blind check DCI still in PDSCH region blind check DCI.
When receiving side accesses network, consider to obtain system broadcasts schedule information etc. in PDCCH region.In receiving side access network
After network success, network side can according to environment residing for receiving side, the channel situation of receiving side, system down control channel
The DCI such as load are selected information to determine to send DCI (tPDCCH) in PDCCH region or are sent DCI in PDSCH region
(ePDCCH)。
Network side can select information according to described DCI, continuous after n-th of subframe triggers n-th of subframe or
Equally spaced m subframe sends ePDCCH.Receiving side n-th of subframe blind check or receive network side transmission triggering letter
Breath, can be informed in by the increased X bits in later continuous or equally spaced m subframe needs blind check
EPDCCH, if not triggering signaling after the complete m subframe of blind check or in m subframe of blind check, it is followed by the complete m subframe of blind check
Receive side to will be returned to the blind check of tPDCCH modes or receive Downlink Control Information, otherwise trigger signaling according to nearest ePDCCH to enter
Row blind check or reception.Wherein described continuous or equally spaced m subframe can indicate to connect by the way of standard cure value
Side is received, the instruction of receiving side m value or described continuous or equally spaced m subframe is either notified by high-level signaling RRC
The bit that signaling bit and triggering ePDCCH are received carries out combined coding, and common X bits after combined coding, the X bits are triggering
Sent in ePDCCH DCI, receiving side is obtained with ePDCCH triggering signalings and m value after the DCI is received.
Embodiment five：
Network side is needed by increasing by 1 bit in Downlink Control Information DCI for triggering the receiving side in next subframe
Will be in PDCCH region blind check DCI still in PDSCH region blind check DCI.
When receiving side accesses network, consider to obtain system broadcasts schedule information etc. in PDCCH region.In receiving side access network
After network success, network side can according to environment residing for receiving side, the channel situation of receiving side, system down control channel
The DCI such as load are selected information to determine to send DCI (tPDCCH) in PDCCH region or are sent DCI in PDSCH region
(ePDCCH)。
Network side can select information according to described DCI, and triggering the n-th+k subframes in n-th of subframe sends ePDCCH.
Receiving side n-th of subframe blind check or receive network side transmission triggering information, can be informed in n+k frames needs blind check
EPDCCH, if there is no blind check in n+k subframes to ePDCCH, continue blind check tPDCCH in subframe afterwards, until next
Secondary network side sends ePDCCH triggering information.It can set and use tPDCCH modes when increased 1 bit of institute is 0, be adopted when being 1
With ePDCCH modes.Wherein k is the timed interval of hybrid automatic repeat-request HARQ processes, i.e., when HARQ poll comes and goes
Between be spaced, it is different for FDD with TDD polling intervals.
Embodiment six：
Network side is used to refer to the receiving side need in next subframe by increasing by 1 bit in Downlink Control Information DCI
Will be in PDCCH region blind check DCI still in PDSCH region blind check DCI.
When receiving side accesses network, consider to obtain system broadcasts schedule information etc. in PDCCH region.In receiving side access network
After network success, network side can according to environment residing for receiving side, the channel situation of receiving side, system down control channel
The DCI such as load are selected information to determine to send DCI (tPDCCH) in PDCCH region or are sent DCI in PDSCH region
(ePDCCH)。
Network side can select information according to described DCI, the subframe hair after n-th of subframe triggers the n-th+k subframes
Send ePDCCH.Receiving side n-th of subframe blind check or receive network side transmission triggering information, can be informed in n+k with
Blind check ePDCCH is needed in subframe afterwards, until the triggering information of network side change next time.Can set when increased 1 bit of institute as
TPDCCH modes are used when 0, ePDCCH modes use when being 1, wherein k is HARQ poll two-way time interval, for FDD with
TDD polling intervals are different.
Embodiment seven：
Network side uses ePDCCH by reusing Downlink Control Information DCI, such as DCI Format 1C to trigger receiving side
Mode blind check receives Downlink Control Information.When receiving side accesses network, consider to obtain system broadcasts scheduling in PDCCH region
Information etc..After receiving side access network success, network side can be according to the environment residing for receiving side, the channel feelings of receiving side
Condition, the DCI such as the load of down control channel of system select information to determine PDCCH region send DCI (tPDCCH) or
DCI (ePDCCH) is sent in PDSCH region.
Network side can select information according to described DCI, the subframe hair after n-th of subframe triggers the n-th+k subframes
Send ePDCCH.Receiving side n-th of subframe blind check or receive network side transmission triggering information, can be informed in n+k with
Blind check ePDCCH is needed in subframe afterwards, the release DCI signalings until receiving network side transmission.When receiving side receives release DCI
After signaling, receiving side is using the blind check of tPDCCH modes or receives Downlink Control Information.Wherein k is HARQ poll two-way time
Interval, it is different for FDD with TDD polling intervals.
Embodiment eight：
Network side in Downlink Control Information DCI by adding X (X >=1) bit to be used to refer to receive in next subframe
Side is needed in PDCCH region blind check DCI still in PDSCH region blind check DCI.
When receiving side accesses network, consider to obtain system broadcasts schedule information etc. in PDCCH region.In receiving side access network
After network success, network side can according to environment residing for receiving side, the channel situation of receiving side, system down control channel
The DCI such as load are selected information to determine to send DCI (tPDCCH) in PDCCH region or are sent DCI in PDSCH region
(ePDCCH)。
Network side can select information according to described DCI, continuous after n-th of subframe triggers the n-th+k subframes or
The equally spaced m subframe of person sends ePDCCH.Receiving side n-th of subframe blind check or receive network side transmission triggering letter
Breath, can be informed in the later continuous or equally spaced m subframe of n+k needs blind check ePDCCH, in the complete m subframe of blind check
If not triggering signaling afterwards or in m subframe of blind check, being followed by receiving side in the complete m subframe of blind check, to will be returned to tPDCCH modes blind
Inspection receives Downlink Control Information, otherwise triggers signaling according to nearest ePDCCH and either blind check or is connect to carry out blind check
Receive.Wherein m subframe can be by the way of standard cure value, or high-level signaling RRC notifies receiving side m value, Huo Zhesuo
State the indication signaling bit of m subframe and trigger the bit progress combined coding that ePDCCH is received, common X bits after combined coding,
This X bit is sent in triggering ePDCCH DCI, and receiving side is obtained with ePDCCH triggering letters after the DCI is received
Order and m value.K is HARQ poll two-way time interval, different for FDD with TDD polling intervals.
Embodiment nine：
Network side is used to refer to connect in next subframe by increasing Y (Y ＞ 1) bit in Downlink Control Information DCI
Receiving side needs which time domain and/or frequency domain position blind check ePDCCH in PDSCH region are put.
Network side can select information according to DCI, and (n+1)th subframe ePDCCH frequency domain position is triggered in n-th of subframe
Change.Receiving side n-th of subframe blind check or receive network side transmission triggering information, can be informed in next
Blind check ePDCCH frequency domain position is needed in subframe, if there is no blind check in next subframe to ePDCCH, son afterwards
Frame relay is continuous according to the ePDCCH frequency domain position blind check ePDCCH received recently, and until next time, network side sends ePDCCH frequency domains
Change in location triggers information.
The frequency domain position can use following bandwidth partition mode：
| Bandwidth (MHz) | Fractional bandwidth number |
| N1~N2 | S1 |
| N2+1~N3 | S2 |
| N3+1~N4 | S3 |
| N4+1~N5 | S4 |
Different fractional bandwidth numbers can be distributed according to different system bandwidths, the following method of salary distribution can be used：
| Bandwidth (MHz) | Fractional bandwidth number |
| ≤10 | 1 |
| 11~26 | 2 |
| 27~63 | 4 |
| 64~110 | 8 |
I.e. whole bandwidth is divided into several parts by network side according to system bandwidth, passes through increased Y triggering ratio in DCI
Spy come indicate receiving side need which fractional bandwidth blind check or receive ePDCCH.K is HARQ poll two-way time interval,
It is different for FDD with TDD polling intervals.
Embodiment ten：
Network side is used to refer to the receiving side need in next subframe by increasing N-bit in Downlink Control Information DCI
Blind check ePDCCH frequency domain position is needed in which frequency domain part blind check DCI of PDSCH region, i.e. receiving side.
Network side can select information according to described DCI, and the n-th+k subframe ePDCCH frequency domains position is triggered in n-th of subframe
Put and change.Receiving side n-th of subframe blind check or receive network side transmission triggering information, n+k can be known
Blind check ePDCCH frequency domain position is needed in frame, if there is no blind check in n+k subframes to ePDCCH, subframe relaying afterwards
Continue according to the ePDCCH frequency domain position blind check ePDCCH received recently, until next time, network side sends the change of ePDCCH frequency domain positions
Change triggering information.The division of this frequency domain position can be in the following way：
Network side notifies receiving side ePDCCH pre-selection frequency domain position or ePDCCH pre-selection frequency domain by high-level signaling
Position and the number of levels of division.For example, the pre-selection frequency domain position is divided into A part, network side is in n-th of subframe
Increase in Downlink Control InformationBit triggers the part of pre-selection frequency domain resource of the receiving side in the n-th+k subframes
Frequency domain position blind check receives ePDCCH blind checks or reception, and wherein k value is equal to zero or between the timing of HARQ processes
Every.
Further, the number of levels that network side divides according to system, the ePDCCH pre-selection frequency domain positions of high level notice are entered
Row division, and indicate receiving side needs which fractional bandwidth of the reserved frequency domain position of blind check by the triggering bit in DCI.
Embodiment 11：
Network side in Downlink Control Information DCI by adding N-bit to be used to refer to the receiving side needs in next subframe
Which frequency domain part blind check DCI of PDSCH region.I.e. receiving side needs blind check ePDCCH frequency domain position.
Network side can select information according to described DCI, and the n-th+k subframe ePDCCH frequency domains are triggered in n-th of subframe
Position changes.Receiving side n-th of subframe blind check or receive network side transmission triggering information, n+ can be informed in
Blind check ePDCCH frequency domain position is needed in k subframes, if there is no blind check in n+k subframes to ePDCCH, subframe afterwards
Middle to continue according to the ePDCCH frequency domain position blind check ePDCCH received recently, until next time, network side sends ePDCCH frequency domains position
Put change triggers information.The division of this frequency domain position can be in the following way：
| Bandwidth (MHz) | Fractional bandwidth number |
| N1~N2 | S1 |
| N2+1~N3 | S2 |
| N3+1~N4 | S3 |
| N4+1~N5 | S4 |
Different fractional bandwidth numbers can be distributed according to different bandwidth, it is further contemplated that：
| Bandwidth (MHz) | Fractional bandwidth number |
| ≤10 | 1 |
| 11~26 | 2 |
| 27~63 | 4 |
| 64~110 | 8 |
I.e. whole bandwidth is divided into several parts by network side according to system bandwidth, is referred to by the triggering bit in DCI
Show receiving side needs which fractional bandwidth of blind check.
Embodiment 12：
Based on above-described embodiment, the present invention also provides a kind of device for allocating resources of control channel, and the device includes：
Configuration module 1201, tPDCCH or ePDCCH mode is received for configuring triggering receiving side, and the mode includes：
By in Downlink Control Information increased N number of bit (N is the positive integer more than 0) controlled to trigger receiving side in physical down
The blind check of channel PDCCH region receives conventional physical down control channel tPDCCH, or triggering receiving side is shared in physical down
The blind check of channel PDSCH region receives enhancing Physical Downlink Control Channel ePDCCH；And/or by the way of aperiodic triggering
To indicate that receiving side needs the ePDCCH of the PDSCH region of blind check time domain and/or frequency domain position scope；
Sending module 1202, tPDCCH is sent or in PDSCH region in PDCCH region for the configuration according to configuration module
Send ePDCCH.
The device embodiment realizes that its functional module included is all to realize the present invention based on preceding method embodiment
The step flow of method and set, its functions of modules all can directly export from above-described embodiment, not repeat herein.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc..The Downlink Control Information configuration signal scheme used herein, it should be included in the protection of the present invention
Within the scope of.
Claims (10)
1. a kind of resource allocation method of control channel, it is characterised in that this method includes：
Network side using aperiodic triggering mode by Downlink Control Information increased N number of bit trigger receiving side in thing
Manage the blind check of down control channel PDCCH region or receive conventional physical down control channel tPDCCH, or triggering receiving side is in thing
Manage the blind check of DSCH Downlink Shared Channel PDSCH region or receive enhancing Physical Downlink Control Channel ePDCCH, the N as more than 0 just
Integer；And/or
Network side indicated by the way of aperiodic triggering receiving side need the ePDCCH of the PDSCH region of blind check time domain and
Frequency domain position scope；Wherein, increase by 1 bit in Downlink Control Information of the network side in n-th of subframe to trigger receiving side to exist
PDSCH region blind check or reception ePDCCH, the k in n-th+k subframes are determining for hybrid automatic repeat-request HARQ processes
When time interval.
2. according to the method for claim 1, it is characterised in that in Downlink Control Information of the network side in n-th of subframe
Increase by 1 bit to trigger PDSCH region blind check or reception ePDCCH of the receiving side in (n+1)th subframe.
3. according to the method for claim 1, it is characterised in that in Downlink Control Information of the network side in n-th of subframe
Increase by 1 bit trigger in continuous or equally spaced m subframe of the receiving side after n-th of subframe PDSCH region blind check or
EPDCCH is received, wherein described continuous or equally spaced m subframe is led to by the radio resource control RRC signaling method of high level
Know receiving side.
4. according to the method for claim 1, it is characterised in that in Downlink Control Information of the network side in n-th of subframe
Increase X bits to trigger the PDSCH region blind check in continuous or equally spaced m subframe of the receiving side after n-th of subframe
Or receive ePDCCH, indication signaling bit and triggering of the increased X bits by described continuous or equally spaced m subframe
Formed after the bit combined coding that ePDCCH is received, the X is more than 1.
5. according to the method for claim 1, it is characterised in that in Downlink Control Information of the network side in n-th of subframe
It is blind to trigger the PDSCH region in continuous or equally spaced m subframe of the receiving side after the n-th+k subframes to increase by 1 bit
Inspection receives ePDCCH, wherein, described continuous or equally spaced m subframe is notified by the way of high-level signaling RRC notices
Receiving side, the k are the timed interval of hybrid automatic repeat-request HARQ processes.
6. according to the method for claim 1, it is characterised in that in Downlink Control Information of the network side in n-th of subframe
Increase X bits are blind to trigger the PDSCH region in continuous or equally spaced m subframe of the receiving side after the n-th+k subframes
Inspection receives ePDCCH, and the increased X bits are by the indication signaling bit of described continuous or equally spaced m subframe and tactile
Formed after the bit combined coding that hair ePDCCH is received, the k is between the timing of hybrid automatic repeat-request HARQ processes
Every the X is more than 1.
7. according to the method for claim 1, it is characterised in that network side draws full bandwidth according to different system bandwidths
Be divided into several parts, increase Y bit in Downlink Control Information of the network side in n-th of subframe trigger receiving side n-th+
Which fractional bandwidth blind check of the full bandwidth PDSCH region in k subframe receives ePDCCH, and wherein k value is equal to zero or is
The timed interval of HARQ processes, the Y are more than 1.
8. according to the method for claim 7, it is characterised in that described that full bandwidth is divided into according to different system bandwidths
Several parts are specially：System bandwidth is divided into four parts, is respectively：
When system bandwidth is N1 megahertzs~N2 megahertzs, the bandwidth number of division is S1；
When system bandwidth is N2+1 megahertzs~N3 megahertzs, the bandwidth number of division is S2；
When system bandwidth is N3+1 megahertzs~N4 megahertzs, the bandwidth number of division is S3；
When system bandwidth is N4+1 megahertzs~N5 megahertzs, the bandwidth number of division is S4；
Wherein N1, N2, N3, N4, N5, S1, S2, S3, S4 is the positive integer more than 0, Y bit number according to different bandwidth and
It is different.
9. according to the method for claim 1, it is characterised in that network side notifies receiving side ePDCCH's by high-level signaling
Time domain and frequency domain position are preselected, and the pre-selection frequency domain position is divided into A part, network side is in n-th of subframe
Increase in Downlink Control InformationBit triggers the part of pre-selection frequency domain resource of the receiving side in the n-th+k subframes
Frequency domain position blind check receives ePDCCH blind checks or reception, and wherein k value is equal to zero or between the timing of HARQ processes
Every.
10. a kind of device for allocating resources of control channel, it is characterised in that the device includes：
Configuration module, tPDCCH or ePDCCH mode is received for configuring triggering receiving side, and the mode includes：By under
Increased N number of bit passes to trigger receiving side in the blind check of physical downlink control channel PDCCH region or reception in row control information
Unite Physical Downlink Control Channel tPDCCH, or triggering receiving side in the blind check of Physical Downlink Shared Channel PDSCH region or receives increasing
Strong Physical Downlink Control Channel ePDCCH, the N are the positive integer more than 0；And/or referred to by the way of the aperiodic triggering
Show that receiving side needs the ePDCCH of the PDSCH region of blind check time domain and frequency domain position scope；Wherein, network side is in n-th of son
Increase by 1 bit in Downlink Control Information in frame to trigger PDSCH region blind check or reception of the receiving side in the n-th+k subframes
EPDCCH, the k are the timed interval of hybrid automatic repeat-request HARQ processes；
Sending module, send tPDCCH in PDCCH region for the configuration according to configuration module or sent in PDSCH region
ePDCCH。
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| WO2015113295A1 (en) * | 2014-01-29 | 2015-08-06 | 华为技术有限公司 | Data transmission method and device |
| CN107872896B (en) * | 2016-09-23 | 2022-10-21 | 中兴通讯股份有限公司 | Control information transmission method and device |
| CN108809493B (en) * | 2017-05-05 | 2022-06-24 | 中兴通讯股份有限公司 | Information sending and receiving method, device, equipment and storage medium |
| CN109391417B (en) * | 2017-08-11 | 2022-05-13 | 华为技术有限公司 | Method, device and system for transmitting downlink control information |
| CN113541907B (en) * | 2018-02-08 | 2022-07-26 | 展讯通信（上海）有限公司 | Method and device for detecting downlink control information and user equipment |
| US10841816B2 (en) | 2018-04-13 | 2020-11-17 | Nokia Technologies Oy | Configuration of failure detection reference signals |
| CN110492972B (en) * | 2018-05-14 | 2022-02-08 | 北京小米松果电子有限公司 | Blind detection control method, device, base station, user equipment and storage medium |
| CN115299138A (en) * | 2020-03-26 | 2022-11-04 | 高通股份有限公司 | Downlink control information for uplink scheduling |
| CN115189805A (en) * | 2021-04-02 | 2022-10-14 | 索尼集团公司 | Electronic device, wireless communication method, and computer-readable storage medium |
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