CN110492972A - Blind examination control method, device, base station, user equipment and storage medium - Google Patents

Blind examination control method, device, base station, user equipment and storage medium Download PDF

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Publication number
CN110492972A
CN110492972A CN201810458245.7A CN201810458245A CN110492972A CN 110492972 A CN110492972 A CN 110492972A CN 201810458245 A CN201810458245 A CN 201810458245A CN 110492972 A CN110492972 A CN 110492972A
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China
Prior art keywords
pdcch
dci
target
blind examination
hold period
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CN201810458245.7A
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CN110492972B (en
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许百成
毕存磊
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Beijing Xiaomi Pinecone Electronic Co Ltd
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Beijing Pinecone Electronics Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0036—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
    • H04L1/0038—Blind format detection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0052—Realisations of complexity reduction techniques, e.g. pipelining or use of look-up tables

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

This disclosure relates to which a kind of blind examination control method, device, base station, user equipment and storage medium, are related to field of communication technology.This method comprises: for MPDCCH or NPDCCH, in base station side by determining the target PDCCH for sending Downlink Control Information DCI according to preassigned PDCCH set or preconfigured PDCCH hold period, target PDCCH is recycled to send DCI to user equipment.Correspondingly, determining the target PDCCH for needing blind examination according to preassigned PDCCH set or preconfigured PDCCH hold period, and carry out the blind examination of DCI using target PDCCH in user equipment side.It can reduce the quantity of the MPDCCH or NPDCCH of blind examination required for user equipment, so as to reduce the blind examination complexity of user equipment, and reduce blind examination power consumption.

Description

Blind examination control method, device, base station, user equipment and storage medium
Technical field
This disclosure relates to field of communication technology, and in particular, to a kind of blind examination control method, device, base station, user equipment And storage medium.
Background technique
EMTC (Enhanced Machine-Type Communications, the machine type communication of enhancing) and NB-IoT (Narrow Band Internet of Things, narrowband Internet of Things) is 3GPP (3rd Generation Partnership Project, third generation partner program) two kinds of honeycomb technology of Internet of things defining, reduce terminal complexity and on power consumption is State the major issue that two kinds of technologies are paid close attention to jointly.
By taking eMTC as an example, MPDCCH (MTC Physical Downlink Control is defined in eMTC Channel, MTC Physical Downlink Control Channel) it is used to dynamic dispatching PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel) and PUSCH (Physical Uplink Shared Channel, physical uplink are shared Channel).The basic resources unit of MPDCCH is ECCE ((Enhanced Control Channel Element, control channel list Member).Various DCI (Downlink Control Information, Downlink Control Information), UE (User are carried on MPDCCH Equipment, user equipment) start the length for the DCI for being not aware that carrying and the position of the ECCE where MPDCCH.In agreement In, Candidate Set and search space are defined, a Candidate Set is the set that possible be used to send the ECCE of MPDCCH, a search Space is the set of multiple Candidate Sets.UE will use possible DCI length and attempt to be received and decoded on each Candidate Set, directly It is to the DCI for detecting that base station is sent, i.e., so-called " blind examination ".For eMTC, the MPDCCH of blind examination is needed in a blind examination subframe Candidate Set maximum quantity is 16.
Currently, the NPDCCH of either above-mentioned MPDCCH or NB-IoT is blind during the blind examination as defined in 3GPP agreement During inspection, in each search time window, network side (i.e. base station side) can be in search space according to channel situation and net Network loading condition dynamic select MPDCCH or NPDCCH channel to be used, and UE need it is all possible in blind examination search space Candidate collection.
Summary of the invention
Purpose of this disclosure is to provide a kind of blind examination control method, device, base station, user equipment and storage mediums, use Need blind examination caused by all possible candidate collection in blind examination search space complicated when solving current user equipment in blind examination Degree is high, the high problem of power consumption.
To achieve the goals above, it is applied to base station in a first aspect, provide a kind of blind examination control method in the disclosure, The described method includes:
It is determined according to preconfigured physical downlink control channel PDCCH resource selection strategy for sending downlink control letter The target PDCCH of DCI is ceased, the PDCCH resource selection strategy includes preassigned PDCCH set or preconfigured PDCCH hold period, the PDCCH include the MPDCCH of the machine type communication eMTC based on enhancing or based on narrowband Internet of Things The NPDCCH of NB-IoT；
The DCI is sent to user equipment using the target PDCCH.
Optionally, the PDCCH resource selection strategy includes the PDCCH hold period, described according to preconfigured PDCCH resource selection strategy determines the target PDCCH for sending DCI, comprising:
In current PDCCH hold period, determine in current search space with the presence or absence of selected candidate out PDCCH, the candidate PDCCH is the PDCCH chosen in current search space according to preset dispatching algorithm；
When there are the candidate PDCCH, the candidate PDCCH is determined as the target PDCCH；
When the candidate PDCCH is not present, by what is selected in current search space using the dispatching algorithm PDCCH is as the target PDCCH.
Optionally, the PDCCH resource selection strategy includes the PDCCH hold period, in the PDCCH hold period It is provided with more new window, the initial time of the more new window and the initial time of the PDCCH hold period are identical and described The duration of more new window is less than the PDCCH hold period；
The target PDCCH determined according to preconfigured PDCCH resource selection strategy for sending DCI, comprising:
In current PDCCH hold period, the update window in the current PDCCH hold period is determined whether In mouthful；
When in the more new window, by what is selected in current search space using preset dispatching algorithm PDCCH is as the target PDCCH；
When being not in the more new window, the PDCCH will be selected in the more new window as the mesh Mark PDCCH；
Wherein, it when it is multiple for selected the PDCCH in the more new window, will be selected in the more new window The PDCCH finally selected in multiple PDCCH out is as the target PDCCH.
Optionally, the starting subframe of a PDCCH hold period is to meet the subframe of the following conditions:
Wherein, nhfIndicate system of system frame number, nfIndicate System Frame Number, nsIndicate timeslot number, αoffsetIndicate start offset because Son, T indicate PDCCH hold period.
Optionally, the PDCCH resource selection strategy includes the preassigned PDCCH set, and the basis is preparatory The PDCCH resource selection strategy of configuration determines the target PDCCH for sending DCI, comprising:
PDCCH in the preassigned PDCCH set is determined as the target PDCCH.
It is optionally, described to send the DCI to user equipment using the target PDCCH, comprising:
Preferentially the DCI is sent to the user equipment using the target PDCCH；
When sending the DCI not successfully using the target PDCCH, using in current search space remove the target Other PDCCH except PDCCH send the DCI to the user equipment.
It is optionally, described to send the DCI to user equipment using the target PDCCH, comprising:
One PDCCH is set in the DCI and keeps flag bit；
The DCI is sent to the user equipment using the target PDCCH, the holding flag bit is used to indicate under In the time window of one search space, when the base station sends the DCI to the user equipment used PDCCH and this Whether identical send used PDCCH when the DCI.
In the second aspect of the disclosure, a kind of blind examination control method is provided, is applied to user equipment, which comprises
The target physical down control channel PDCCH for needing blind examination is obtained, the target PDCCH is according to preconfigured The PDCCH for being used to send Downlink Control Information DCI that PDCCH resource selection strategy determines, the PDCCH resource selection strategy packet It includes preassigned PDCCH set or preconfigured PDCCH hold period, the PDCCH includes the machine type based on enhancing Type communicates the MPDCCH of the eMTC or NPDCCH based on narrowband Internet of Things NB-IoT
Blind examination is carried out using the target PDCCH, to obtain the DCI that the base station is sent.
Optionally, the PDCCH resource selection strategy includes the PDCCH hold period, and the acquisition needs blind examination Target PDCCH, comprising:
In current PDCCH hold period, determine in current search space with the presence or absence of blind examination to the DCI's PDCCH；
When there is PDCCH of the blind examination to the DCI, using the PDCCH of the blind examination to the DCI as institute State the target PDCCH in current PDCCH hold period；
When there is no the PDCCH of the blind examination to the DCI, by all PDCCH in the current search space As the target PDCCH.
Optionally, the PDCCH resource selection strategy includes the PDCCH hold period, in the PDCCH hold period It is provided with more new window, the initial time of the more new window and the initial time of the PDCCH hold period are identical and described The duration of more new window is less than the PDCCH hold period；It is described to obtain the target PDCCH for needing blind examination, comprising:
In current PDCCH hold period, the update window in the current PDCCH hold period is determined whether In mouthful；
When in the more new window, using all PDCCH in the current search space as the target PDCCH；
When being not in the more new window, using in the more new window blind examination to the DCI PDCCH as The target PDCCH；
It wherein, will be in the update window when the PDCCH of blind examination to the DCI in the more new window are multiple Last blind examination is to the PDCCH of the DCI as the target PDCCH in mouthful.
Optionally, the starting subframe of a PDCCH hold period is to meet the subframe of the following conditions:
Wherein, nhfIndicate system of system frame number, nfIndicate System Frame Number, nsIndicate timeslot number, αoffsetIndicate start offset because Son, T indicate PDCCH hold period.
Optionally, the PDCCH resource selection strategy includes the preassigned PDCCH set, and the acquisition needs The target PDCCH of blind examination, comprising:
PDCCH in the preassigned PDCCH set is determined as the target PDCCH.
Optionally, described to carry out blind examination using the target PDCCH, include: to obtain the DCI that the base station is sent
Preferentially blind examination is carried out using the target PDCCH；
When detecting the DCI not successfully on the target PDCCH, using in current search space remove the target Other PDCCH except PDCCH carry out blind examination.
Optionally, before the acquisition needs the target PDCCH of blind examination, the method also includes:
Judge in the time window of a upper search space whether blind examination is to the DCI；
When the DCI is arrived in inspection in the time window in a upper search space, the PDCCH obtained in the DCI keeps mark The value of will position；
It is used when keeping the value of flag bit to determine that the base station last time sends the DCI according to the PDCCH Whether used PDCCH is identical when PDCCH sends the DCI with this；
Used PDCCH phase when used PDCCH and this transmission DCI when the last time sending the DCI Meanwhile used PDCCH carries out blind examination when sending the DCI using the last time；
When non-blind examination or last sends DCI when institute to the DCI in the time window in a upper search space When the PDCCH used and this transmission DCI when used PDCCH difference, the target for obtaining and needing blind examination is executed The step of PDCCH.
In the third aspect of the disclosure, a kind of blind examination control device is provided, is applied to base station, described device includes:
Determining module, for being used for according to the determination of preconfigured physical downlink control channel PDCCH resource selection strategy Send the target PDCCH of Downlink Control Information DCI, the PDCCH resource selection strategy include preassigned PDCCH set or Preconfigured PDCCH hold period, the PDCCH include the MPDCCH of the machine type communication eMTC based on enhancing or are based on The NPDCCH of narrowband Internet of Things NB-IoT；
Sending module, for sending the DCI to user equipment using the target PDCCH.
Optionally, the PDCCH resource selection strategy includes the PDCCH hold period, and the determining module is used for:
In current PDCCH hold period, determine in current search space with the presence or absence of selected candidate out PDCCH, the candidate PDCCH is the PDCCH chosen in current search space according to preset dispatching algorithm；
When there are the candidate PDCCH, the candidate PDCCH is determined as the target PDCCH；
When the candidate PDCCH is not present, by what is selected in current search space using the dispatching algorithm PDCCH is as the target PDCCH.
Optionally, the PDCCH resource selection strategy includes the PDCCH hold period, in the PDCCH hold period It is provided with more new window, the initial time of the more new window and the initial time of the PDCCH hold period are identical and described The duration of more new window is less than the PDCCH hold period；The determining module, is used for:
In current PDCCH hold period, the update window in the current PDCCH hold period is determined whether In mouthful；
When in the more new window, by what is selected in current search space using preset dispatching algorithm MPDCCH is as the target PDCCH；
When being not in the more new window, the PDCCH will be selected in the more new window as the mesh Mark PDCCH；
Wherein, it when it is multiple for selected the PDCCH in the more new window, will be selected in the more new window The PDCCH finally selected in multiple PDCCH out is as the target PDCCH.
Optionally, the starting subframe of a PDCCH hold period is to meet the subframe of the following conditions:
Wherein, nhfIndicate system of system frame number, nfIndicate System Frame Number, nsIndicate timeslot number, αoffsetIndicate start offset because Son, T indicate PDCCH hold period.
Optionally, the PDCCH resource selection strategy includes that the preassigned PDCCH gathers, the determining module, For:
PDCCH in the preassigned PDCCH set is determined as the target PDCCH.
Optionally, the sending module is used for:
Preferentially the DCI is sent to the user equipment using the target PDCCH；
When sending the DCI not successfully using the target PDCCH, using in current search space remove the target Other PDCCH except PDCCH send the DCI to the user equipment.
Optionally, the sending module, comprising:
Submodule is set, keeps flag bit for a PDCCH to be arranged in the DCI；
Sending submodule, for sending the DCI, the holding mark to the user equipment using the target PDCCH Will position is used to indicate in the time window of next search space, and the base station sends DCI when institute to the user equipment Whether used PDCCH is identical when the PDCCH used sends the DCI with this.
In the fourth aspect of the disclosure, a kind of blind examination control device is provided, is applied to user equipment, described device includes:
Module is obtained, for obtaining the target downlink control channel PDCCH for needing blind examination, the target PDCCH is basis What preconfigured physical downlink control channel PDCCH resource selection strategy determined is used to send Downlink Control Information DCI's PDCCH, the PDCCH resource selection strategy include preassigned PDCCH set or preconfigured PDCCH hold period, The PDCCH includes the MPDCCH based on machine type communication eMTC of enhancing or based on narrowband Internet of Things NB-IoT NPDCCH；
Blind examination module, for carrying out blind examination using the target PDCCH, to obtain the DCI that the base station is sent.
Optionally, the PDCCH resource selection strategy includes the PDCCH hold period, and the acquisition module is used for:
In current PDCCH hold period, determine in current search space with the presence or absence of blind examination to the DCI's PDCCH；
When there is PDCCH of the blind examination to the DCI, using the PDCCH of the blind examination to the DCI as institute State target PDCCH；
When there is no the PDCCH of the blind examination to the DCI, by all PDCCH in the current search space As the target PDCCH in the current PDCCH hold period.
Optionally, the PDCCH resource selection strategy includes the PDCCH hold period, in the PDCCH hold period It is provided with more new window, the initial time of the more new window and the initial time of the PDCCH hold period are identical and described The duration of more new window is less than the PDCCH hold period；The acquisition module, is used for:
In current PDCCH hold period, the update window in the current PDCCH hold period is determined whether In mouthful；
When in the more new window, using all PDCCH in the current search space as the target PDCCH；
When being not in the more new window, using in the more new window blind examination to the DCI PDCCH as The target PDCCH；
It wherein, will be in the update window when the PDCCH of blind examination to the DCI in the more new window are multiple Last blind examination is to the PDCCH of the DCI as the target PDCCH in mouthful.
Optionally, the starting subframe of a PDCCH hold period is to meet the subframe of the following conditions:
Wherein, nhfIndicate system of system frame number, nfIndicate System Frame Number, nsIndicate timeslot number, αoffsetIndicate start offset The factor, T indicate PDCCH hold period.
Optionally, the PDCCH resource selection strategy includes that the preassigned PDCCH gathers, the acquisition module, For:
PDCCH in the preassigned PDCCH set is determined as the target PDCCH.
Optionally, the blind examination module, is used for:
Preferentially blind examination is carried out using the target PDCCH；
When detecting the DCI not successfully on the target PDCCH, using in current search space remove the target Other PDCCH except PDCCH carry out blind examination.
Optionally, described device further include:
Judgment module, for judging in a upper search space before the acquisition needs the target PDCCH of blind examination Whether blind examination is to the DCI in time window；
Read module, for obtaining in the DCI when the DCI is arrived in inspection in the time window in a upper search space PDCCH keep flag bit value；
Determining module, for being kept the value of flag bit to determine according to the PDCCH, the base station last time sends the DCI When used PDCCH and this when sending the DCI used PDCCH it is whether identical；
The blind examination module is also used to when the last time sending the DCI described in used PDCCH and this transmission When used PDCCH is identical when DCI, used PDCCH carries out blind examination when sending the DCI using the last time；
The acquisition module, be also used to when in the time window of a upper search space non-blind examination to the DCI, Huo Zheshang When once sending used PDCCH and this transmission DCI when the DCI when used PDCCH difference, described in execution The step of acquisition needs the target PDCCH of blind examination.
At the 5th aspect of the disclosure, a kind of computer readable storage medium is provided, computer program is stored thereon with, it should The step of above-mentioned first aspect the method is realized when program is executed by processor.
At the 6th aspect of the disclosure, a kind of base station is provided, comprising:
Memory is stored thereon with computer program；And
One or more processor realizes above-mentioned first aspect for executing the computer program in the memory The step of the method.
At the 7th aspect of the disclosure, a kind of computer readable storage medium is provided, computer program is stored thereon with, it should The step of above-mentioned second aspect the method is realized when program is executed by processor.
In the eighth aspect of the disclosure, a kind of user equipment is provided, comprising:
Memory is stored thereon with computer program；And
One or more processor realizes above-mentioned second aspect for executing the computer program in the memory The step of the method.
Through the above technical solutions, for the MPDCCH based on eMTC or based on the NPDCCH of NB-IoT, it is logical in base station side It crosses and is determined according to preassigned PDCCH set or preconfigured PDCCH hold period for sending Downlink Control Information DCI Target PDCCH, using target PDCCH to user equipment send DCI.Correspondingly, in user equipment side, according to finger in advance Fixed PDCCH set or preconfigured PDCCH hold period determine the target PDCCH for needing blind examination, and utilize the target PDCCH carries out the blind examination of DCI.It can reduce the quantity of the MPDCCH or NPDCCH of blind examination required for user equipment, so as to The blind examination complexity of user equipment is enough reduced, and reduces blind examination power consumption.
Other feature and advantage of the disclosure will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is and to constitute part of specification for providing further understanding of the disclosure, with following tool Body embodiment is used to explain the disclosure together, but does not constitute the limitation to the disclosure.In the accompanying drawings:
Figure 1A is a kind of flow diagram of blind examination control method shown according to one exemplary embodiment of the disclosure；
A kind of DCI transmission flow schematic diagram of the Figure 1B shown according to one exemplary embodiment of the disclosure；
Fig. 2A is the flow diagram of another blind examination control method shown according to one exemplary embodiment of the disclosure；
Fig. 2 B is a kind of blind examination flow diagram shown according to one exemplary embodiment of the disclosure；
Fig. 3 is that the process for the selection method for implementing a kind of target PDCCH for base station exemplified according to Fig. 1 is shown It is intended to；
Fig. 4 is the stream for implementing the selection method of the target PDCCH for user equipment exemplified a kind of according to Fig. 1 Journey schematic diagram；
Fig. 5 A is the stream for the selection method that the another kind for implementing to exemplify according to Fig. 1 is used for the target PDCCH of base station Journey schematic diagram；
Fig. 5 B is the relation schematic diagram according to a kind of hold period and more new window shown in Fig. 5 A illustrated embodiment；
Fig. 6 is the selection method that the another kind for implementing to exemplify according to Fig. 1 is used for the target PDCCH of user equipment Flow diagram；
Fig. 7 is a kind of block diagram of blind examination control device shown according to one exemplary embodiment of the disclosure；
Fig. 8 is the block diagram for implementing a kind of sending module exemplified according to Fig.7,；
Fig. 9 is the block diagram of another blind examination control device shown according to one exemplary embodiment of the disclosure；
Figure 10 is the block diagram according to another blind examination control device shown in one exemplary embodiment of the disclosure；
Figure 11 is a kind of block diagram of base station shown according to an exemplary embodiment；
Figure 12 is a kind of block diagram of user equipment shown according to an exemplary embodiment.
Specific embodiment
It is described in detail below in conjunction with specific embodiment of the attached drawing to the disclosure.It should be understood that this place is retouched The specific embodiment stated is only used for describing and explaining the disclosure, is not limited to the disclosure.
Before the blind examination control method that disclosure offer is provided, applied first to involved in each embodiment of the disclosure Scene is introduced.The application scenarios may include base station and user equipment, and wherein the base station can be eNodeB (Evolved Node B, evolved base station), eNodeB is the base station in LET (Long Term Evolution, long term evolution), user equipment It can be smart phone, tablet computer, intelligent wearable device, PDA (Personal Digital Assistant, a number Word assistant), portable computer etc..In the disclosure, base station passes through selected MPDCCH or NPDCCH to user equipment DCI is sent, and user equipment then carries out blind examination on the selected MPDCCH or NPDCCH for needing to carry out blind examination, to obtain The DCI that base station is sent.The blind examination control method provided below the disclosure is illustrated.
Figure 1A is a kind of flow diagram of blind examination control method shown according to one exemplary embodiment of the disclosure, application In base station, this method comprises:
Step 101, the target PDCCH for sending DCI is determined according to preconfigured PDCCH resource selection strategy, PDCCH resource selection strategy includes preassigned PDCCH set or preconfigured PDCCH hold period, PDCCH include base MPDCCH in the eMTC or NPDCCH based on NB-IoT.
It can understand, for being applied to eMTC, then corresponding MPDCCH resource selection strategy may include MPDCCH set or preconfigured MPDCCH hold period.When using the implementation of MPDCCH hold period, base station can To be updated according to preconfigured MPDCCH hold period to MPDCCH, such as in current search space, every arrival One new MPDCCH hold period, can be updated the MPDCCH for transmission, if do not reached next MPDCCH hold period then can use and MPDCCH have been selected in current search space send DCI.When using finger in advance When the implementation of fixed MPDCCH set, which, which gathers, may include one or more specified MPDCCH, and this Or multiple specified MPDCCH can be configured by high-rise or network side (i.e. base station side).
In addition, target MPDCCH described here can be understood as the money of the MPDCCH for being used to send DCI chosen Source position, the i.e. position of ECCH, that is, previously described MPDCCH Candidate Set, therefore hereinafter base station selected for sending The MPDCCH or user equipment of DCI selects the MPDCCH for being used for blind examination is practical to refer to MPDCCH Candidate Set.
Step 102, DCI is sent to user equipment using target PDCCH.
Or for being applied to eMTC, Figure 1B sends stream according to a kind of DCI shown in one exemplary embodiment of the disclosure Journey schematic diagram, base station as shown in Figure 1B using MPDCCH to user send DCI process may include: to sent DCI according to Secondary progress CRC (Cyclic Redundancy Check, cyclic redundancy check) addition, channel coding, rate-matched, scrambling, tune System, layer mapping, precoding, RE (Resource Element, resource unit) resource impact, OFDM (Orthogonal Frequency Division Multiplexing, i.e. orthogonal frequency division multiplexing) signal generate, modulation and up-conversion after, will pass through Treated DCI is sent.
Correspondingly, the process that Fig. 2A is another blind examination control method shown according to one exemplary embodiment of the disclosure is shown It is intended to, is applied to user equipment, this method comprises:
Step 201, the target PDCCH for needing blind examination is obtained, target PDCCH is according to preconfigured PDCCH resource The PDCCH for being used to send Downlink Control Information DCI that selection strategy determines, the PDCCH resource selection strategy include preassigning PDCCH set or preconfigured PDCCH hold period, PDCCH include MPDCCH based on eMTC or based on NB-IoT's NPDCCH。
Corresponding with step 101, for being applied to eMTC, the MPDCCH resource selection strategy of user equipment side may include MPDCCH set or preconfigured MPDCCH hold period.When using the implementation of MPDCCH hold period, Yong Hushe The MPDCCH hold period of standby side is synchronous with the MPDCCH of base station side holding, and user equipment can be according to preconfigured MPDCCH Hold period is updated MPDCCH, such as in current search space, the new MPDCCH hold period of one of every arrival, MPDCCH for transmission can be updated, if not reaching next MPDCCH hold period, can use and work as The MPDCCH of blind examination to DCI carry out subsequent blind examination as target MPDCCH before in preceding search space, and under reaching When one MPDCCH hold period, need to reselect the MPDCCH for carrying out blind examination.But according to above scheme it is found that In In one MPDCCH hold period, the MPDCCH that base station is used to send DCI only updates once, in user equipment side, at one In MPDCCH hold period, the MPDCCH for carrying out blind examination also only updates once, therefore base station need not send every time DCI and all exist Entire search space reselects MPDCCH, user equipment also need not every time blind examination of the blind examination all in entire search space it is all MPDCCH.When using the implementation of preassigned MPDCCH set, MPDCCH set may include one or more Specified MPDCCH, the specified MPDCCH of the one or more can be configured by high-rise or base station side.To which user equipment exists When carrying out blind examination, only blind examination need to be carried out on the MPDCCH that the one or more is specified, it is not necessary to select to use in entire search space In the MPDCCH of blind examination.
Above-mentioned is only illustrated by taking MPDCCH as an example, equally applicable for the NPDCCH of NB-IoT.It can be seen that above-mentioned Technical solution can reduce the quantity of the MPDCCH or NPDCCH of blind examination required for user equipment, so as to reduce user equipment Blind examination complexity, and it is high to reduce blind examination power consumption.
Step 202, blind examination is carried out using target PDCCH, to obtain the DCI of base station transmission.
Or for being applied to eMTC, Fig. 2 B is a kind of blind examination process shown according to one exemplary embodiment of the disclosure Schematic diagram, as shown in Figure 2 B, corresponding to the base station transmission process of DCI, user equipment carries out the mistake of blind examination using target MPDCCH Journey may include:
User equipment successively carried out on selected target MPDCCH solution resource impact, channel estimation, channel equalization and MIMO (Multiple Input Multiple Output, multiple-input and multiple-output) is demodulated, solved precoding, solution layer is mapped, demodulated, Descrambling, solution rate-matched, channel decoding, CRC check, to have detected whether DCI.Fail to detect when on a MPDCCH When DCI, above-mentioned process is repeated, until detecting DCI or finishing all target MPDCCH blind examinations.
Through the above technical solutions, for the MPDCCH based on eMTC or based on the NPDCCH of NB-IoT, it is logical in base station side It crosses and is determined according to preassigned PDCCH set or preconfigured PDCCH hold period for sending Downlink Control Information DCI Target PDCCH, using target PDCCH to user equipment send DCI.Correspondingly, in user equipment side, according to finger in advance Fixed PDCCH set or preconfigured PDCCH hold period determine the target PDCCH for needing blind examination, and utilize the target PDCCH carries out the blind examination of DCI.It can reduce the quantity of the MPDCCH or NPDCCH of blind examination required for user equipment, so as to The blind examination complexity of user equipment is enough reduced, and it is high to reduce blind examination power consumption.
Can be in realization mode at the first, Fig. 3 is a kind of target for base station for implementing to exemplify according to Fig. 1 The flow diagram of the selection method of PDCCH, this method is applicable to MPDCCH or NPDCCH, wherein being selected with PDCCH resource Strategy described in step 101 according to preconfigured PDCCH resource selection strategy including for PDCCH hold period, then determining It may comprise steps of for the step of sending the target PDCCH of DCI:
Step 1011a, in current PDCCH hold period, determining, which whether there is in current search space, selected Candidate PDCCH, candidate PDCCH is the PDCCH chosen in current search space according to preset dispatching algorithm.
Wherein, the starting subframe of a PDCCH hold period is to meet the subframe of the following conditions:
Wherein, nhfIndicate system of system frame number, nfIndicate System Frame Number, nsIndicate timeslot number, αoffsetIndicate start offset because Son.
I.e. whenever having subframe to meet above-mentioned condition, then explanation has been currently entering a new PDCCH hold period, then It needs to re-execute the steps 1011a-1013a.
Candidate PDCCH is determined as the target PDCCH when there are the candidate PDCCH by step 1012a.It wherein will be candidate PDCCH is determined as target PDCCH, it should be understood that is the mesh being determined as the candidate PDCCH in current PDCCH hold period Mark PDCCH needs to reselect target PDCCH when reaching next PDCCH hold period.
Step 1013a will be selected in current search space when candidate MPDCCH is not present using the dispatching algorithm PDCCH as target PDCCH.
By taking MPDCCH as an example, above-mentioned steps 1011a-1013a is it is to be understood that in a MPDCCH hold period, such as There is the MPDCCH (may be to choose when last time sending DCI) for having been selected out in fruit current search space, then Currently transmitted DCI is the MPDCCH for directly having been selected out using this, if there is currently no have been selected out MPDCCH (such as may there are no be transmitted across DCI before this), then the preset dispatching algorithm is selected in current search space The MPDCCH for being currently used in and sending DCI is selected out, similarly for NPDCCH.Therefore in a MPDCCH or NPDCCH hold period It is considered that MPDCCH or NPDCCH updates once, to reduce the complexity of user equipment side blind examination.
Fig. 4 is the stream for implementing the selection method of the target PDCCH for user equipment exemplified a kind of according to Fig. 1 Journey schematic diagram, this method are applicable to MPDCCH or NPDCCH, correspond to above-mentioned embodiment shown in Fig. 3, are selected with PDCCH resource It selects strategy and includes the step of for PDCCH hold period, acquisition described in above-mentioned step 201 needs the target PDCCH of blind examination It may comprise steps of:
In step 2011a, in current PDCCH hold period, determine in current search space with the presence or absence of PDCCH of the blind examination to DCI.
Identical as base station side, for user equipment, the starting subframe of a PDCCH hold period is below also meeting The subframe of condition:
Wherein, nhfIndicate system of system frame number, nfIndicate System Frame Number, nsIndicate timeslot number, αoffsetIndicate start offset because Son, T indicate PDCCH hold period,Indicate downward rounding operation.I.e. whenever thering is subframe to meet above-mentioned condition, then illustrate It is currently entering a new PDCCH hold period, T indicates PDCCH hold period, then needs to re-execute the steps 1021a- 1023a。
Wherein, the PDCCH hold period of user equipment side should keep synchronous with the PDCCH hold period of base station side.
In step 2012a, when there are the PDCCH of the blind examination to DCI, using the PDCCH of the blind examination to DCI as Target PDCCH in current PDCCH hold period.The PDCCH of blind examination to DCI make in i.e. current PDCCH hold period It needs to re-start above-mentioned when reaching next PDCCH hold period for the target PDCCH in current PDCCH hold period The judgement of step 2011a.
It, will be all in current search space when there is no the PDCCH of blind examination to DCI in step 2013a PDCCH is as target PDCCH.
Or by taking MPDCCH as an example, corresponding to the process of base station side selection MPDCCH, above-mentioned steps 1021a-1023a can be with It is interpreted as, in a MPDCCH hold period, if successfully detected in blind examination subframe before existing in current search space To DCI MPDCCH when, then will successfully be detected the MPDCCH of DCI as the MPDCCH for being used for current blind examination before this；If There is no the MPDCCH that DCI successfully is detected before this in current search space, then all in entire current search space On MPDCCH carry out blind examination (for example, it may be possible to being the first time blind examination in current MPDCCH hold period), above scheme for NPDCCH is similarly.Therefore MPDCCH or NPDCCH updates once in a MPDCCH or NPDCCH hold period, as long as therefore User equipment success blind examination is excessively primary, and succeeded blind examination before can be used during the subsequent blind examination in the hold period MPDCCH or NPDCCH, therefore can reduce the complexity of user equipment side blind examination, and reduce blind examination power consumption.
In second of achievable mode, Fig. 5 A is that the another kind for implementing to exemplify according to Fig. 1 is used for the mesh of base station The flow diagram of the selection method of PDCCH is marked, this method is applicable to MPDCCH or NPDCCH, which selects plan Slightly include PDCCH hold period, be provided with more new window in the PDCCH hold period, the initial time of the more new window with should The initial time of PDCCH hold period is identical, and the duration of the more new window is less than the PDCCH hold period.Described in step 101 May include following the step of determining the target PDCCH for sending DCI according to preconfigured PDCCH resource selection strategy Step:
Step 1011b is determined whether in current PDCCH hold period in current PDCCH hold period In more new window.
Wherein, in the present embodiment, the condition met needed for PDCCH hold period is identical with step 1011a, no longer superfluous It states.
Step 1012b will be selected in current search space when in more new window using preset dispatching algorithm PDCCH out is as target PDCCH.
Step 1013b will selected the PDCCH as target when being not in more new window in more new window PDCCH.Wherein, multiple by what is selected in more new window when it is multiple for selected the PDCCH in more new window The PDCCH finally selected in PDCCH is as target PDCCH.
Scheme provided by the present embodiment can be understood as increasing PDCCH holding week on the basis of method shown in Fig. 3 More new window in phase.I.e. in a PDCCH hold period, and PDCCH can be just updated in its more new window.
By taking MPDCCH as an example, Fig. 5 B is the pass according to a kind of hold period and more new window shown in Fig. 5 A illustrated embodiment It is schematic diagram, as shown in Figure 5 B, in a MPDCCH hold period T, more new window TupdateInitial time and keep week The initial time of phase T is identical, and TupdateDuration be less than hold period T, it can be interpreted as new whenever entering one In MPDCCH hold period T, only in the T of beginningupdateIt is interior to update MPDCCH.Therefore, when base station will send DCI, first really It is settled before whether a MPDCCH hold period T more new window TupdateIt is interior, when in more new window TupdateWhen interior, utilize The MPDCCH that preset dispatching algorithm is selected in current search space is as the MPDCCH for sending DCI；When in not More new window Tupdate(still in current MPDCCH hold period T, but more new window T has been had been subjected to when interiorupdate, therefore No longer update), it will be in more new window T beforeupdateInterior selected MPDCCH out is as the MPDCCH for sending DCI.On Scheme is stated for NPDCCH similarly.Therefore MPDCCH or NPDCCH can be limited in a MPDCCH or NPDCCH hold period It can only be in more new window TupdateInterior update, to reduce the complexity of user equipment side blind examination.Wherein, needing specification is, if In more new window TupdateMultiple target MPDCCH are inside selected, then using the MPDCCH finally selected as being used to send DCI's MPDCCH。
Fig. 6 is the selection method that the another kind for implementing to exemplify according to Fig. 1 is used for the target PDCCH of user equipment Flow diagram, this method are applicable to MPDCCH or NPDCCH, correspond to embodiment shown in above-mentioned Fig. 5 A, PDCCH resource Selection strategy also includes the more new window in PDCCH hold period and PDCCH hold period, the initial time of the more new window with The initial time of PDCCH hold period is identical, and the duration of the more new window is less than the PDCCH hold period, then step 201 institute The step of acquisition stated needs the target PDCCH of blind examination may comprise steps of:
Step 2011b is determined whether in current PDCCH hold period in current PDCCH hold period In more new window.
Wherein, in the present embodiment, the condition met needed for PDCCH hold period is identical with step 2011a, no longer superfluous It states.
Step 2012b, when in more new window, using all PDCCH in current search space as target PDCCH。
Step 2013b, when being not in more new window, using in more new window blind examination to DCI PDCCH as mesh Mark PDCCH.It wherein, will the last blind examination in more new window when the PDCCH of blind examination to DCI in more new window are multiple To DCI PDCCH as target PDCCH.
By taking MPDCCH as an example, the relationship of MPDCCH hold period and its more new window is referred to Fig. 5 B institute in the present embodiment Show.It is identical as base station side, in a MPDCCH hold period T, more new window TupdateInitial time and hold period T Initial time it is identical, and TupdateDuration be less than hold period T.And the hold period T of user equipment side, more new window TupdateWith the hold period T of base station side, more new window TupdateIt should keep synchronous.
Thus whenever entering in a new MPDCCH hold period T, since base station side is only in the T of beginningupdateIt is interior can be with Update MPDCCH.Therefore, when user equipment will carry out blind examination, it is first determined current whether MPDCCH hold period T's More new window TupdateIt is interior, when in more new window TupdateWhen interior, since the MPDCCH that base station sends DCI is possible to convert, Therefore blind examination is carried out on all MPDCCH in entire current search space；And works as and be not at more new window TupdateWhen interior, by MPDCCH before the MPDCCH that base station sends DCI is, therefore will be carried out on the MPDCCH that blind examination goes out DCI before blind Inspection, above scheme for NPDCCH similarly.Therefore it can be limited in a MPDCCH or NPDCCH hold period MPDCCH or NPDCCH can only be in more new window TupdateInterior update, to reduce the complexity of user equipment side blind examination.
Can be in realization mode at the third, above-mentioned PDCCH resource selection strategy may include preassigned PDCCH collection It closes, which can be comprising being suitable for by high-rise or the preconfigured one or more PDCCH of base station side, the program MPDCCH and NPDCCH, correspondingly, being determined according to preconfigured PDCCH resource selection strategy for sending out described in step 101 The step of sending the target PDCCH of DCI may include: that the PDCCH in preassigned PDCCH set is determined as target PDCCH.
By taking MPDCCH as an example, base station is when sending DCI, if there is preconfigured MPDCCH, then using preconfigured The transmission of MPDCCH progress DCI.
Correspondingly, acquisition described in above-mentioned steps 201 needs the target PDCCH of blind examination, comprising: by preassigned PDCCH PDCCH in set is determined as target PDCCH.
Or by taking MPDCCH as an example, user equipment first can determine in current search space whether have when carrying out blind examination The high-rise or preconfigured MPDCCH of base station side, it is if there is preconfigured MPDCCH, then enterprising in preconfigured MPDCCH Row blind examination.To make user equipment that need not carry out blind examination to all MPDCCH in entire current search space, use can reduce The blind examination complexity of family equipment reduces blind examination power consumption.
Further, base station can preferentially be conducive to preconfigured PDCCH to send DCI, by its of current search space His PDCCH is as spare PDCCH, then correspondingly, step 102 may include:
Preferentially DCI is sent to user equipment using target PDCCH；When sending DCI not successfully using target PDCCH, benefit DCI is sent to user equipment with other PDCCH in current search space in addition to target PDCCH.
User equipment side then can preferentially using the target PDCCH carry out blind examination, when on the target PDCCH not at When function detects the DCI, blind examination is carried out using other PDCCH in current search space in addition to the target PDCCH.On It states scheme and MPDCCH and NPDCCH is applicable in, below by taking MPDCCH as an example:
Base station can preferentially be conducive to preconfigured using preconfigured one or more MPDCCH as preferred MPDCCH MPDCCH sends DCI, using other MPDCCH in current search space as spare MPDCCH；Correspondingly, user equipment into When row blind examination, blind examination is preferentially carried out on preconfigured MPDCCH, when DCI is not detected in preconfigured MPDCCH, Blind examination is carried out on other MPDCCH in current search space again.
Wherein, it is worth mentioning at this point that, above-mentioned the third can realize that mode is the specific search space for user equipment (search space UE-Specific), base station can be in RRC (Radio Resource Control, wireless heterogeneous networks) signalings Middle configuration user equipment needs to carry out the MPDCCH of blind examination.
In addition, in the scheme for indicating MPDCCH by above-mentioned preconfigured mode, it can be by being carried out to MPDCCH The form of Unified number realizes the instruction to MPDCCH.Exemplary, the principle of number may include: to be originated first according to ECCH Position from low to high, considers further that polymerization grade (Aggregation Level) from low to high, considers further that levels of repetition (Repetition Level) from low to high, considers further that PRB (Physical Resource Block, Physical Resource Block) collects, In for PRB collection, first consider 2PRBs collection, consider further that 4PRBs collection, then 2+4PRBs collection.Illustratively, table 1 is 3GPP agreement Table in TS36.213 in Table9.1.5-1b about MPDCCH.
Table 1
Wherein, MPDCCH PRB set indicates that above-mentioned MPDCCH PRB collection, R indicate levels of repetition, and L ' indicates polymerization etc. Grade,It indicates to correspond to PRB set p (0 or 1), polymerization grade L ' user equipment in the case where different repetitions are registered needs blind examination MPDCCH number, the case where listing 16 kinds in whole table and need blind examination.It is exemplary, according to table 1, for 2PRB set In the case where L '=2 R=r1, there is 1 MPDCCH to need blind examination.
The number of MPDCCH, number result shown in available table 2 are carried out according to above-mentioned numbering principle to table 1.
Table 2
To base station side or the high-rise instruction that can carry out MPDCCH by above-mentioned number.User equipment can be according to this A number order carries out MPDCCH demodulation, and maximum probability can solve correct MPDCCH in advance and terminate and (detect DCI).
Optionally, in the 4th kind of achievable mode, utilization target PDCCH described in step 102 is sent to user equipment DCI may include: that a PDCCH is arranged in the DCI to keep flag bit；Then it is sent out using target PDCCH to user equipment Give the DCI.
It may include a PDCCH in the DCI that i.e. base station is sent and keep flag bit, which is used to indicate under In the time window of one search space, base station used PDCCH and this transmission DCI when institute when sending DCI to user equipment Whether the PDCCH used is identical.
Correspondingly, in user equipment side, before obtaining and needing the target PDCCH of blind examination, method described in Fig. 2 can be with The following steps are included:
First, it is determined that whether blind examination is to DCI in the time window of a upper search space.When in a upper search space When DCI is arrived in inspection in time window, the value that the PDCCH in the DCI keeps flag bit is obtained.
Secondly, when keeping the value of flag bit to determine that the base station last time sends DCI according to the PDCCH used PDCCH with Whether used PDCCH is identical when this sends DCI.Used PDCCH and this transmission when the last time sending DCI When used PDCCH is identical when DCI, used PDCCH carries out blind examination when sending DCI using the last time；When at upper one Non- blind examination is to DCI in the time window of search space, or it is last send when DCI used PDCCH and this when sending DCI When used PDCCH difference, then step 201-202 is executed, or blind examination can also be carried out in entire search space.
I.e. user equipment can first judge whether adjust in a upper search space time window when carrying out current blind examination Current user equipment is spent, i.e., whether base station gives current user equipment to be transmitted across in a upper search space time window DCI keeps the value of flag bit according to the PDCCH in the DCI if being transmitted across DCI in a upper search space time window PDCCH and whether change used in DCI that current base station is sent to determine, can be used in last time if unchanged Blind examination is carried out on PDCCH, user equipment can use step 201 to method shown in 202 to determine for blind if changing The PDCCH of inspection, or blind examination is carried out in entire search space.The above process is applicable in MPDCCH and NPDCCH.
For being applied to eMTC, a bit can be increased in DCI as MPDCCH and keep flag bit, such as is fixed Justice is mpdcch_keep_flag, then:
If mpdcch_keep_flag=1, indicate in the time window of next search space MPDCCH, if base station There is DCI to be sent to user equipment, then base station will use MPDCCH identical with this；
If mpdcch_keep_flag=0, indicate in the time window of next search space MPDCCH, if base station There is DCI to be sent to user equipment, then base station may use the MPDCCH different with this.
If mpdcch_keep_flag indicates that base station uses MPDCCH identical with this, user equipment is blind in last time It examines and carries out this blind examination on the MPDCCH of DCI；If mpdcch_keep_flag instruction base station may use and this Different MPDCCH, then user equipment is needing to carry out blind examination on all MPDCCH of entire search space.Wherein, time window Refer to preset MPDCCH receiving time range, for example known MPDCCH can send (DCI) between time a and timeb, it can be with Fill up time A to section entire between time B or when the section in a period of time.
So as to indicate whether base station used MPDCCH when sending DCI next time changes by DCI, when not having When variation, make user equipment that need not carry out blind examination to all MPDCCH in entire current search space, it only need to be in last time blind examination Blind examination is carried out on the MPDCCH of DCI out, so as to reduce the blind examination complexity of user equipment, reduces blind examination power consumption.
Fig. 7 is a kind of block diagram of blind examination control device shown according to one exemplary embodiment of the disclosure, is applied to base station, The blind examination control device 700 may include:
Determining module 701, for determining the target for sending DCI according to preconfigured PDCCH resource selection strategy PDCCH, the PDCCH resource selection strategy include preassigned PDCCH set or preconfigured PDCCH hold period, PDCCH includes the MPDCCH based on the eMTC or NPDCCH based on NB-IoT；
Sending module 702, for sending DCI to user equipment using target PDCCH.
Optionally, which includes the PDCCH hold period, which is used for:
In current PDCCH hold period, it is determined whether there is selected candidate PDCCH out, which is The PDCCH chosen in current search space according to preset dispatching algorithm；
When there are the candidate PDCCH, which is determined as target PDCCH；
When the candidate PDCCH is not present, the PDCCH selected in current search space using the dispatching algorithm is made For target PDCCH.
Optionally, in another implementation, which includes the PDCCH hold period, should More new window is provided in PDCCH hold period, the initial time of the initial time of the more new window and the PDCCH hold period It is identical, and the duration of the more new window is less than the PDCCH hold period；The determining module 701, can be used for:
In current PDCCH hold period, the more new window in current PDCCH hold period is determined whether It is interior；
When in the more new window, by what is selected in current search space using preset dispatching algorithm PDCCH is as target PDCCH；
When being not in the more new window, the PDCCH will be selected in this more new window as target PDCCH；
Wherein, when it is multiple for selected the PDCCH in this more new window, by what is selected in this more new window The PDCCH finally selected in multiple PDCCH is as target PDCCH.
Wherein, the starting subframe of a PDCCH hold period is to meet the subframe of the following conditions:
Wherein, nhfIndicate system of system frame number, nfIndicate System Frame Number, nsIndicate timeslot number, αoffsetIndicate start offset because Son, T indicate PDCCH hold period.
Optionally, in another implementation, which includes preassigned PDCCH set, The determining module 701, is used for:
PDCCH in the preassigned PDCCH set is determined as target PDCCH.
Optionally, which can be used for:
Preferentially DCI is sent to user equipment using target PDCCH；
When sending DCI not successfully using target PDCCH, its in current search space in addition to target PDCCH is utilized His PDCCH sends DCI to user equipment.
Optionally, Fig. 8 is the block diagram for implementing a kind of sending module exemplified according to Fig.7, the sending module 702, May include:
Submodule 7021 is set, keeps flag bit for a PDCCH to be arranged in DCI；
Sending submodule 7022 keeps flag bit to be used to indicate for sending DCI to user equipment using target PDCCH In the time window of next search space, base station used PDCCH and this transmission DCI when sending DCI to user equipment When used PDCCH it is whether identical.
Fig. 9 is the block diagram of another blind examination control device shown according to one exemplary embodiment of the disclosure, is applied to use Family equipment, the blind examination control device 900 may include:
Module 901 is obtained, for obtaining the target PDCCH for needing blind examination, target PDCCH is according to preconfigured The PDCCH for being used to send DCI that PDCCH resource selection strategy determines, which includes preassigned PDCCH set or preconfigured PDCCH hold period, the PDCCH include MPDCCH based on eMTC or based on NB-IoT's NPDCCH；
Blind examination module 902, for carrying out blind examination using target PDCCH, to obtain the DCI of base station transmission.
Optionally, in one implementation, which includes the PDCCH hold period, the acquisition Module 901, can be used for:
In current PDCCH hold period, determines and arrive DCI's with the presence or absence of blind examination in current search space PDCCH；
When there are the PDCCH of the blind examination to DCI, protected the PDCCH of the blind examination to DCI as current PDCCH Hold the target PDCCH in the period；
When there is no the PDCCH of the blind examination to DCI, using all PDCCH in current search space as target PDCCH。
Optionally, in another implementation, which includes the PDCCH hold period, should More new window is provided in PDCCH hold period, the initial time of the initial time of the more new window and the PDCCH hold period It is identical, and the duration of the more new window is less than the PDCCH hold period；The acquisition module 901, can be used for:
In current PDCCH hold period, the more new window in current PDCCH hold period is determined whether It is interior；
When in the more new window, using all PDCCH in current search space as target PDCCH；
When being not in the more new window, using in this more new window blind examination to DCI PDCCH as target PDCCH；It wherein, will the last blind examination in more new window when the PDCCH of blind examination to DCI in this more new window are multiple To DCI PDCCH as target PDCCH.
Wherein, the starting subframe of a PDCCH hold period is to meet the subframe of the following conditions:
Wherein, nhfIndicate system of system frame number, nfIndicate System Frame Number, nsIndicate timeslot number, αoffsetIndicate start offset because Son, T indicate PDCCH hold period.
Optionally, in another implementation, which includes the preassigned PDCCH collection It closes, which can be used for:
PDCCH in the preassigned PDCCH set is determined as target PDCCH.
Optionally, the blind examination module 902, can be used for:
Preferentially blind examination is carried out using target PDCCH；
When detecting DCI not successfully on target PDCCH, using in current search space remove target PDCCH it Other outer PDCCH carry out blind examination.
Optionally, Figure 10 be according to the block diagram of another blind examination control device shown in one exemplary embodiment of the disclosure, As shown in Figure 10, which can also include:
Judgment module 903, for judging in a upper search space before acquisition needs the target PDCCH of blind examination Whether blind examination is to DCI in time window；
Read module 904, for obtaining in DCI when DCI is arrived in inspection in the time window in a upper search space The value of PDCCH holding flag bit；
Determining module 905, for being kept the value of flag bit to be used when determining that the base station last time sends DCI according to PDCCH PDCCH and this send DCI when used PDCCH it is whether identical；
Blind examination module 902 is also used to be used when the last time sending DCI, used PDCCH sends DCI with this PDCCH it is identical when, used PDCCH carries out blind examination when sending DCI using the last time；
Obtain module 901, be also used to when in the time window of a upper search space non-blind examination arrive DCI, or last time When sending used PDCCH and this transmission DCI when DCI when used PDCCH difference, the mesh for obtaining and needing blind examination is executed The step of marking PDCCH.
Through the above technical solutions, for the MPDCCH based on eMTC or based on the NPDCCH of NB-IoT, it is logical in base station side It crosses and is determined according to preassigned PDCCH set or preconfigured PDCCH hold period for sending Downlink Control Information DCI Target PDCCH, using target PDCCH to user equipment send DCI.Correspondingly, in user equipment side, according to finger in advance Fixed PDCCH set or preconfigured PDCCH hold period determine the target PDCCH for needing blind examination, and utilize the target PDCCH carries out the blind examination of DCI.It can reduce the quantity of the MPDCCH or NPDCCH of blind examination required for user equipment, so as to The blind examination complexity of user equipment is enough reduced, and reduces blind examination power consumption
Figure 11 is a kind of block diagram of base station shown according to an exemplary embodiment.As shown in figure 11, which can To include: processor 1101, memory 1102, input/output (I/O) interface 1103 and communication component 1104.
Wherein, processor 1101 is used to control the integrated operation of the base station 1100, to complete above-mentioned blind examination control method In all or part of the steps.Memory 1102 is used to store various types of data to support the operation in the base station 1100, These data for example may include the instruction of any application or method for operating on the base station 1100, and application The relevant data of program, such as the message of transmitting-receiving, picture, audio, video etc..The memory 1102 can be by any kind of Volatibility or non-volatile memory device or their combination are realized, such as static random access memory (Static Random Access Memory, abbreviation SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, abbreviation EEPROM), Erasable Programmable Read Only Memory EPROM (Erasable Programmable Read-Only Memory, abbreviation EPROM), programmable read only memory (Programmable Read- Only Memory, abbreviation PROM), read-only memory (Read-Only Memory, abbreviation ROM), magnetic memory, flash Device, disk or CD.I/O interface 1103 provides interface, other above-mentioned interfaces between processor 1101 and other interface modules Module can be keyboard, mouse, button etc..These buttons can be virtual push button or entity button.Communication component 1104 is used Wired or wireless communication is carried out between the base station 1100 and other equipment.Wireless communication, such as Wi-Fi, bluetooth, near-field communication (Near Field Communication, abbreviation NFC), 2G, 3G or 4G or they one or more of combination, therefore The corresponding communication component 1104 may include: Wi-Fi module, bluetooth module, NFC module.
In one exemplary embodiment, base station 1100 can be by one or more application specific integrated circuit (Application Specific Integrated Circuit, abbreviation ASIC), digital signal processor (Digital Signal Processor, abbreviation DSP), digital signal processing appts (Digital Signal Processing Device, Abbreviation DSPD), programmable logic device (Programmable Logic Device, abbreviation PLD), field programmable gate array (Field Programmable Gate Array, abbreviation FPGA), controller, microcontroller, microprocessor or other electronics member Part is realized, for executing above-mentioned blind examination control method.
In a further exemplary embodiment, a kind of computer readable storage medium including program instruction, example are additionally provided It such as include the memory 1102 of program instruction, above procedure instruction can be executed above-mentioned to complete by the processor 1101 of base station 1100 Blind examination control method.
Figure 12 is a kind of block diagram of user equipment shown according to an exemplary embodiment.As shown in figure 12, which sets Standby 12 may include: processor 1201, memory 1202, multimedia component 1203, input/output (I/O) interface 1204, and Communication component 1205.
Wherein, processor 1201 is used to control the integrated operation of the user equipment 1200, to complete above-mentioned blind examination control All or part of the steps in method.Memory 1202 is for storing various types of data to support in the user equipment 1200 Operation, these data for example may include the finger of any application or method for operating on the user equipment 1200 Order and the relevant data of application program, such as contact data, the message of transmitting-receiving, picture, audio, video etc..The storage Device 1202 can be realized by any kind of volatibility or non-volatile memory device or their combination, such as static random It accesses memory (Static Random Access Memory, abbreviation SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, abbreviation EEPROM), erasable programmable Read-only memory (Erasable Programmable Read-Only Memory, abbreviation EPROM), programmable read only memory (Programmable Read-Only Memory, abbreviation PROM), and read-only memory (Read-Only Memory, referred to as ROM), magnetic memory, flash memory, disk or CD.Multimedia component 1203 may include screen and audio component.Wherein Screen for example can be touch screen, and audio component is used for output and/or input audio signal.For example, audio component may include One microphone, microphone is for receiving external audio signal.The received audio signal can be further stored in storage Device 1202 is sent by communication component 1205.Audio component further includes at least one loudspeaker, is used for output audio signal.I/ O Interface 1204 provides interface between processor 1201 and other interface modules, other above-mentioned interface modules can be keyboard, mouse Mark, button etc..These buttons can be virtual push button or entity button.Communication component 1205 for the user equipment 1200 with Wired or wireless communication is carried out between other equipment.Wireless communication, such as Wi-Fi, bluetooth, near-field communication (Near Field Communication, abbreviation NFC), 2G, 3G or 4G or they one or more of combination, therefore corresponding communication Component 1205 may include: Wi-Fi module, bluetooth module, NFC module.
In one exemplary embodiment, user equipment 1200 can be by one or more application specific integrated circuit (Application Specific Integrated Circuit, abbreviation ASIC), digital signal processor (Digital Signal Processor, abbreviation DSP), digital signal processing appts (Digital Signal Processing Device, Abbreviation DSPD), programmable logic device (Programmable Logic Device, abbreviation PLD), field programmable gate array (Field Programmable Gate Array, abbreviation FPGA), controller, microcontroller, microprocessor or other electronics member Part is realized, for executing above-mentioned blind examination control method.
In a further exemplary embodiment, a kind of computer readable storage medium including program instruction, example are additionally provided It such as include the memory 1202 of program instruction, above procedure instruction can be executed by the processor 1201 of user equipment 1200 to complete Above-mentioned blind examination control method.
The preferred embodiment of the disclosure is described in detail in conjunction with attached drawing above, still, the disclosure is not limited to above-mentioned reality The detail in mode is applied, in the range of the technology design of the disclosure, a variety of letters can be carried out to the technical solution of the disclosure Monotropic type, these simple variants belong to the protection scope of the disclosure.
It is further to note that specific technical features described in the above specific embodiments, in not lance In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the disclosure to it is various can No further explanation will be given for the combination of energy.
In addition, any combination can also be carried out between a variety of different embodiments of the disclosure, as long as it is without prejudice to originally Disclosed thought equally should be considered as disclosure disclosure of that.

Claims (32)

1. a kind of blind examination control method, which is characterized in that be applied to base station, which comprises
It is determined according to preconfigured physical downlink control channel PDCCH resource selection strategy for sending Downlink Control Information The target PDCCH of DCI, the PDCCH resource selection strategy include preassigned PDCCH set or preconfigured PDCCH Hold period, the PDCCH include the MPDCCH of the machine type communication eMTC based on enhancing or based on narrowband Internet of Things NB- The NPDCCH of IoT；
The DCI is sent to user equipment using the target PDCCH.
2. the method according to claim 1, wherein the PDCCH resource selection strategy includes that the PDCCH is protected It holds the period, the target PDCCH determined according to preconfigured PDCCH resource selection strategy for sending DCI, comprising:
In current PDCCH hold period, determine in current search space with the presence or absence of selected candidate PDCCH out, institute Stating candidate PDCCH is the PDCCH chosen in current search space according to preset dispatching algorithm；
When there are the candidate PDCCH, the candidate PDCCH is determined as the target PDCCH；
When the candidate PDCCH is not present, the PDCCH selected in current search space using the dispatching algorithm is made For the target PDCCH.
3. the method according to claim 1, wherein the PDCCH resource selection strategy includes that the PDCCH is protected It holds the period, more new window is provided in the PDCCH hold period, the initial time and the PDCCH of the more new window are protected The initial time for holding the period is identical, and the duration of the more new window is less than the PDCCH hold period；
The target PDCCH determined according to preconfigured PDCCH resource selection strategy for sending DCI, comprising:
In current PDCCH hold period, the more new window in the current PDCCH hold period is determined whether It is interior；
When in the more new window, the PDCCH that will be selected in current search space using preset dispatching algorithm As the target PDCCH；
When being not in the more new window, the PDCCH will be selected in the more new window as the target PDCCH；
Wherein, when it is multiple for selected the PDCCH in the more new window, by what is selected in the more new window The PDCCH finally selected in multiple PDCCH is as the target PDCCH.
4. according to the method in claim 2 or 3, which is characterized in that the starting subframe of a PDCCH hold period is Meet the subframe of the following conditions:
Wherein, nhfIndicate system of system frame number, nfIndicate System Frame Number, nsIndicate timeslot number, αoffsetIndicate the start offset factor, T Indicate PDCCH hold period.
5. the method according to claim 1, wherein the PDCCH resource selection strategy includes the preparatory finger Fixed PDCCH set, the target PDCCH determined according to preconfigured PDCCH resource selection strategy for sending DCI, Include:
PDCCH in the preassigned PDCCH set is determined as the target PDCCH.
6. according to the method described in claim 5, it is characterized in that, described sent using the target PDCCH to user equipment The DCI, comprising:
Preferentially the DCI is sent to the user equipment using the target PDCCH；
When sending the DCI not successfully using the target PDCCH, using in current search space remove the target PDCCH Except other PDCCH send the DCI to the user equipment.
7. the method according to claim 1, wherein described sent using the target PDCCH to user equipment The DCI, comprising:
One PDCCH is set in the DCI and keeps flag bit；
The DCI is sent to the user equipment using the target PDCCH, the holding flag bit is used to indicate next In the time window of search space, the base station used PDCCH and this transmission when sending the DCI to the user equipment Whether used PDCCH is identical when the DCI.
8. a kind of blind examination control method, which is characterized in that be applied to user equipment, which comprises
The target physical down control channel PDCCH for needing blind examination is obtained, the target PDCCH is according to preconfigured The PDCCH for being used to send Downlink Control Information DCI that PDCCH resource selection strategy determines, the PDCCH resource selection strategy packet It includes preassigned PDCCH set or preconfigured PDCCH hold period, the PDCCH includes the machine type based on enhancing Type communicates the MPDCCH of the eMTC or NPDCCH based on narrowband Internet of Things NB-IoT；
Blind examination is carried out using the target PDCCH, to obtain the DCI that the base station is sent.
9. according to the method described in claim 8, it is characterized in that, the PDCCH resource selection strategy includes that the PDCCH is protected It holds the period, it is described to obtain the target PDCCH for needing blind examination, comprising:
In current PDCCH hold period, determine in current search space with the presence or absence of blind examination to the DCI's PDCCH；
When there is the PDCCH that the DCI is arrived in the blind examination, using the PDCCH of the blind examination to the DCI as currently The target PDCCH in PDCCH hold period；
When there is no the PDCCH of the blind examination to the DCI, using all PDCCH in the current search space as The target PDCCH.
10. according to the method described in claim 8, it is characterized in that, the PDCCH resource selection strategy includes the PDCCH Hold period is provided with more new window, the initial time and the PDCCH of the more new window in the PDCCH hold period The initial time of hold period is identical, and the duration of the more new window is less than the PDCCH hold period；The acquisition needs The target PDCCH of blind examination, comprising:
In current PDCCH hold period, the more new window in the current PDCCH hold period is determined whether It is interior；
When in the more new window, using all PDCCH in the current search space as the target PDCCH；
When being not in the more new window, using in the more new window blind examination to the DCI PDCCH as described in Target PDCCH；
It wherein, will be in the more new window when the PDCCH of blind examination to the DCI in the more new window are multiple Last blind examination to the DCI PDCCH as the target PDCCH.
11. method according to claim 9 or 10, which is characterized in that the starting subframe of a PDCCH hold period For the subframe for meeting the following conditions:
Wherein, nhfIndicate system of system frame number, nfIndicate System Frame Number, nsIndicate timeslot number, αoffsetIndicate the start offset factor, T Indicate PDCCH hold period.
12. according to the method described in claim 8, it is characterized in that, the PDCCH resource selection strategy includes the preparatory finger Fixed PDCCH set, it is described to obtain the target PDCCH for needing blind examination, comprising:
PDCCH in the preassigned PDCCH set is determined as the target PDCCH.
13. according to the method for claim 12, which is characterized in that it is described to carry out blind examination using the target PDCCH, to obtain The DCI for taking the base station to send includes:
Preferentially blind examination is carried out using the target PDCCH；
When detecting the DCI not successfully on the target PDCCH, using in current search space remove the target Other PDCCH except PDCCH carry out blind examination.
14. according to the method described in claim 8, it is characterized in that, it is described acquisition need the target PDCCH of blind examination before, The method also includes:
Judge in the time window of a upper search space whether blind examination is to the DCI；
When the DCI is arrived in inspection in the time window in a upper search space, the PDCCH obtained in the DCI keeps flag bit Value；
When keeping the value of flag bit to determine that base station last time sends the DCI according to the PDCCH used PDCCH with Whether used PDCCH is identical when this sends the DCI；
When used PDCCH is identical when the last time sending the DCI, used PDCCH is with this transmission DCI, Used PDCCH carries out blind examination when sending the DCI using the last time；
When non-blind examination or last is used when sending the DCI to the DCI in the time window in a upper search space PDCCH and this when sending the DCI when used PDCCH difference, execute described obtain and need the target PDCCH of blind examination The step of.
15. a kind of blind examination control device, which is characterized in that be applied to base station, described device includes:
Determining module, for being determined according to preconfigured physical downlink control channel PDCCH resource selection strategy for sending The target PDCCH of Downlink Control Information DCI, the PDCCH resource selection strategy include preassigned PDCCH set or preparatory The PDCCH hold period of configuration, the PDCCH include the MPDCCH of the machine type communication eMTC based on enhancing or based on narrowband The NPDCCH of Internet of Things NB-IoT；
Sending module, for sending the DCI to user equipment using the target PDCCH.
16. device according to claim 15, which is characterized in that the PDCCH resource selection strategy includes the PDCCH Hold period, the determining module, is used for:
In current PDCCH hold period, determine in current search space with the presence or absence of selected candidate PDCCH out, institute Stating candidate PDCCH is the PDCCH chosen in current search space according to preset dispatching algorithm；
When there are the candidate PDCCH, the candidate PDCCH is determined as the target PDCCH；
When the candidate PDCCH is not present, the PDCCH selected in current search space using the dispatching algorithm is made For the target PDCCH.
17. device according to claim 15, which is characterized in that the PDCCH resource selection strategy includes the PDCCH Hold period is provided with more new window, the initial time and the PDCCH of the more new window in the PDCCH hold period The initial time of hold period is identical, and the duration of the more new window is less than the PDCCH hold period；The determining mould Block is used for:
In current PDCCH hold period, the more new window in the current PDCCH hold period is determined whether It is interior；
When in the more new window, the PDCCH that will be selected in current search space using preset dispatching algorithm As the target PDCCH；
When being not in the more new window, the PDCCH will be selected in the more new window as the target PDCCH；
Wherein, when it is multiple for selected the PDCCH in the more new window, by what is selected in the more new window The PDCCH finally selected in multiple PDCCH is as the target PDCCH.
18. device according to claim 16 or 17, which is characterized in that starting of a PDCCH hold period Frame is the subframe for meeting the following conditions:
Wherein, nhfIndicate system of system frame number, nfIndicate System Frame Number, nsIndicate timeslot number, αoffsetIndicate the start offset factor, T Indicate PDCCH hold period.
19. device according to claim 15, which is characterized in that the PDCCH resource selection strategy includes described preparatory Specified PDCCH set, the determining module are used for:
PDCCH in the preassigned PDCCH set is determined as the target PDCCH.
20. according to the method for claim 19, which is characterized in that the sending module is used for:
Preferentially the DCI is sent to the user equipment using the target PDCCH；
When sending the DCI not successfully using the target PDCCH, using in current search space remove the target PDCCH Except other PDCCH send the DCI to the user equipment.
21. device according to claim 15, which is characterized in that the sending module, comprising:
Submodule is set, keeps flag bit for a PDCCH to be arranged in the DCI；
Sending submodule, for sending the DCI, the holding flag bit to the user equipment using the target PDCCH It is used to indicate in the time window of next search space, the base station is used when sending the DCI to the user equipment PDCCH and this send the DCI when used PDCCH it is whether identical.
22. a kind of blind examination control device, which is characterized in that be applied to user equipment, described device includes:
Module is obtained, for obtaining the target physical down control channel PDCCH for needing blind examination, the target PDCCH is basis The PDCCH for being used to send Downlink Control Information DCI that preconfigured PDCCH resource selection strategy determines, the PDCCH resource Selection strategy includes preassigned PDCCH set or preconfigured PDCCH hold period, and the PDCCH includes based on increasing The MPDCCH of strong machine type communication eMTC or NPDCCH based on narrowband Internet of Things NB-IoT；
Blind examination module, for carrying out blind examination using the target PDCCH, to obtain the DCI that the base station is sent.
23. device according to claim 22, which is characterized in that the PDCCH resource selection strategy includes the PDCCH Hold period, the acquisition module, is used for:
In current PDCCH hold period, determine in current search space with the presence or absence of blind examination to the DCI's PDCCH；
When there is PDCCH of the blind examination to the DCI, the PDCCH of blind examination to the DCI are worked as described in The target PDCCH in preceding PDCCH hold period；
When there is no the PDCCH of the blind examination to the DCI, using all PDCCH in the current search space as The target PDCCH.
24. device according to claim 22, which is characterized in that the PDCCH resource selection strategy includes the PDCCH Hold period is provided with more new window, the initial time and the PDCCH of the more new window in the PDCCH hold period The initial time of hold period is identical, and the duration of the more new window is less than the PDCCH hold period；The acquisition mould Block is used for:
In current PDCCH hold period, the more new window in the current PDCCH hold period is determined whether It is interior；
When in the more new window, using all PDCCH in the current search space as the target PDCCH；
When being not in the more new window, using in the more new window blind examination to the DCI PDCCH as described in Target PDCCH；
It wherein, will be in the more new window when the PDCCH of blind examination to the DCI in the more new window are multiple Last blind examination to the DCI PDCCH as the target PDCCH.
25. the device according to claim 23 or 24, which is characterized in that starting of a PDCCH hold period Frame is the subframe for meeting the following conditions:
Wherein, nhfIndicate system of system frame number, nfIndicate System Frame Number, nsIndicate timeslot number, αoffsetIndicate the start offset factor, T Indicate PDCCH hold period.
26. device according to claim 22, which is characterized in that the PDCCH resource selection strategy includes described preparatory Specified PDCCH set, the acquisition module are used for:
PDCCH in the preassigned PDCCH set is determined as the target PDCCH.
27. device according to claim 26, which is characterized in that the blind examination module is used for:
Preferentially blind examination is carried out using the target PDCCH；
When detecting the DCI not successfully on the target PDCCH, using in current search space remove the target Other PDCCH except PDCCH carry out blind examination.
28. device according to claim 22, which is characterized in that described device further include:
Judgment module, for judging the time in a upper search space before the acquisition needs the target PDCCH of blind examination Whether blind examination is to the DCI in window；
Read module, for obtaining in the DCI when the DCI is arrived in inspection in the time window in a upper search space The value of PDCCH holding flag bit；
Determining module, for being kept the value of flag bit to determine according to the PDCCH, the base station last time sends DCI when institute Whether used PDCCH is identical when the PDCCH used sends the DCI with this；
The blind examination module, when being also used to the used PDCCH and this transmission DCI when the last time sending the DCI When used PDCCH is identical, used PDCCH carries out blind examination when sending the DCI using the last time；
The acquisition module, be also used to when in the time window of a upper search space non-blind examination arrive the DCI, or last time When sending used PDCCH and this transmission DCI when the DCI when used PDCCH difference, the acquisition is executed The step of needing the target PDCCH of blind examination.
29. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program The step of any one of claim 1-7 the method is realized when being executed by processor.
30. a kind of base station characterized by comprising
Memory is stored thereon with computer program；And
One or more processor is realized any in claim 1-7 for executing the computer program in the memory The step of item the method.
31. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program The step of any one of claim 8-14 the method is realized when being executed by processor.
32. a kind of user equipment characterized by comprising
Memory is stored thereon with computer program；And
One or more processor is realized in claim 8-14 and is appointed for executing the computer program in the memory The step of one the method.
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