CN103716144B - A kind of methods, devices and systems for carrying out ePDCCH relevant configurations and obtaining the configuration - Google Patents
A kind of methods, devices and systems for carrying out ePDCCH relevant configurations and obtaining the configuration Download PDFInfo
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Abstract
It is an object of the invention to provide a kind of methods, devices and systems for carrying out ePDCCH relevant configurations and obtaining the configuration.The method according to the invention includes：The rrc message from base station is received, wherein, the rrc message includes at least one aggregation level set；Determine the ePDCCH number of candidates corresponding to each polymerization grade, the operation of DCI blind decodings is performed with based on each polymerization grade and its corresponding ePDCCH number of candidates.It is an advantage of the current invention that, can be the different aggregation level set of user device configuration so that user equipment need not monitor all of polymerization grade, therefore can effectively reduce the polymerization grade for needing to monitor, the number of times of blind decoding is reduced, so that the distribution of ePDCCH candidates is easily performed.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of side for carrying out ePDCCH relevant configurations and obtaining the configuration
Method, device and system.
Background technology
In prior art, enhanced downlink physical control channel (ePDCCH, ehanced Physical Downlink
Control Channel) polymerization grade (AL, Aggregation Level) determined based on 3GPP RAN 1#70 meetings,
Wherein, the polymerization grade based on determined by the agreement, the sum of its blind decoding at 32 or 48 times, furthermore, it is desirable in polymerization grade
Between carefully distribute ePDCCH candidates, to avoid exceeding the sum of blind decoding.However, the aggregation level set supported by ePDCCH
With traditional PDCCH and differ, and change with different application scenarios and (for example, commonly use the feelings of CP and extension CP
Condition).If monitoring all of polymerization grade as tradition PDCCH, can be extremely difficult when ePDCCH candidates are distributed.Also, root
According to determined by 3GPP RAN 1#70 meetings, the sum of blind decoding is separate with the ePDCCH groups needs for being configured, then at this
The distribution of ePDCCH candidates in the case of kind can be more complicated.
The content of the invention
It is an object of the invention to provide a kind of carry out ePDCCH relevant configurations and obtain the method for the configuration, device and be
System.
According to an aspect of the present invention, there is provided it is a kind of in a user device obtain ePDCCH relevant configurations method, its
In, the method comprising the steps of：
A receives the rrc message from base station, wherein, the rrc message includes at least one aggregation level set；
B determines the ePDCCH number of candidates corresponding to each polymerization grade, with based on each polymerization grade and its corresponding
EPDCCH number of candidates come perform DCI blind decodings operation.
According to an aspect of the present invention, additionally provide it is a kind of realize in a base station carry out ePDCCH phases for user equipment
The method for closing configuration, wherein, the method comprising the steps of：
A determines at least one aggregation level set monitored needed for user equipment according to polymerization grade relevant information；
B generates the rrc message comprising at least one aggregation level set；
C sends the rrc message to the user equipment.
According to an aspect of the present invention, additionally provide a kind of configuration for obtaining ePDCCH relevant configurations in a user device
Acquisition device, wherein, the configuration device includes：
Reception device, for receiving the rrc message from base station, wherein, the rrc message includes at least one polymerization etc.
Level set；
First determining device, for determining the ePDCCH number of candidates corresponding to each polymerization grade, with poly- based on each
Close grade and its corresponding ePDCCH number of candidates to perform the operation of DCI blind decodings.
According to an aspect of the present invention, additionally provide a kind of base for ePDCCH relevant configurations are carried out for user equipment
Stand, wherein, the base station includes：
Second determining device, for according to polymerization grade relevant information, determining at least monitored needed for user equipment
Individual aggregation level set；
Generating means, for generating the rrc message comprising at least one aggregation level set；
Dispensing device, for sending the rrc message to the user equipment.
According to an aspect of the present invention, a kind of communication system is additionally provided, wherein, the communication system is included comprising institute
State the user equipment of configuration acquisition device, and the base station.
Compared with prior art, the present invention has advantages below：The method of the present invention can be different for user device configuration
Aggregation level set so that user equipment need not monitor all of polymerization grade, therefore effectively can reduce needs what is monitored
Polymerization grade, reduces the number of times of blind decoding, so that the distribution of ePDCCH candidates is easily performed.
Description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, other of the invention
Feature, objects and advantages will become more apparent upon：
Fig. 1 illustrates a kind of communication system of the invention；
Fig. 2 illustrates a kind of method flow for carrying out ePDCCH relevant configurations and obtaining the configuration of the invention
Figure；
Fig. 3 illustrate according to a preferred embodiment of the present invention carry out ePDCCH relevant configurations and obtain the configuration
Method flow diagram；
Fig. 4 illustrates a kind of ePDCCH relevant configurations that carry out of the invention with the communication system for obtaining the configuration
Structural representation；
Fig. 5 illustrates the schematic diagram of aggregation level set of the invention.
In accompanying drawing, same or analogous reference represents same or analogous part.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in further detail.
Fig. 1 illustrates a kind of communication system of the invention.Wherein, communication system of the invention is included at least
One base station and at least one corresponding user equipment.In communication system as shown in Figure 1, use including base station, first
Family equipment and second user equipment.
Wherein, the communication system is including but not limited to the wireless communication system based on 3GPP LTE.The user sets
It is standby include can wirelessly directly or indirectly and base station communication electronic installation, including but not limited to mobile phone, PDA etc..It is described
Base station includes but is not limited to BS, e-NodeB, Home eNodeB, macro base station etc..
It should be noted that it should be appreciated by those skilled in the art that the communication system, base station and user equipment simultaneously
It is non-to be limited with described.
Wherein, base station is respectively first user equipment and second user device configuration ePDCCH, and will be related to configuration
Signaling is sent to corresponding user equipment, and user equipment is received after the signaling of base station, included in the signaling
Aggregation level set is performing the operation of corresponding blind decoding.
Fig. 2 illustrates a kind of method flow for carrying out ePDCCH relevant configurations and obtaining the configuration of the invention
Figure.The step of the method according to the invention includes the step of being performed by user equipment S11, step S12 and is performed by base station S21,
Step S22 and step S23.
In the step s 21, base station determines at least one monitored needed for user equipment according to polymerization grade relevant information
Aggregation level set.
Wherein, the polymerization grade relevant information is included for the various information of aggregation level set is determined for base station.It is excellent
Selection of land, the polymerization grade relevant information include following at least any one information：
1) channel related information of the channel of user equipment；
The channel related information includes but is not limited to related to channel, information that is can affecting aggregation level set.It is excellent
Selection of land, the channel related information include but is not limited to channel quality information, and, affect other information of channel quality etc..
2) the disposal ability information of user equipment；
3) interference information of one or more cells adjacent with the base station；
4) the schedulable resource information of the base station；
5) the resource utilization information of the base station.
Wherein, base station can determine the related letter of the channel of the channel of the user equipment based on the information from user equipment
The disposal ability information of breath and user equipment.For example, based on user equipment channel condition information (Channel Status
The information such as classification (UE Category) Information), belonging to user equipment are determining channel quality information etc..
Those skilled in the art should determine the side for obtaining every polymerization grade relevant information according to practical situation and demand
Method, here is omitted.
Specifically, the optimum of channel quality, the disposal ability having and own resource residing for base station from user equipment
The angle for utilizing, carries out comprehensive assessment to one or more polymerization grade relevant information, distributes to the poly- of user equipment to determine
Close class set.
For example, when base station, to detect active user's channel quality poor, and itself available resources it is more when, then set to user
Back-up matches somebody with somebody larger polymerization grade；Conversely, if resource itself can be called less, and channel quality it is preferable when, then only give which
Distribute less polymerization grade.
Preferably, at least one aggregation level set may include all polymerization grade collection that user equipment can be supported
Close, now, the rrc message comprising all aggregation level sets is threshold value configured information.
In step S22, base station generates the rrc message comprising at least one aggregation level set.Wherein, it is described
Rrc message includes the information generated based on radio resource control (RRC, Radio Resource Control).
Wherein, the aggregation level set included in rrc message can have various ways.Preferably, the polymerization grade collection
Conjunction can be represented in following any one mode：
1) using bitmap forms representing.
For example, it is for 1,2,4,8,16,32 this polymerization grade, each corresponding using 1 bit, wherein, 0 represents
The polymerization grade is not applied to, 1 represents the applicable polymerization grade.With reference to Fig. 5, for aggregation level set { 2,4,8 }, which is corresponding
Bitmap is 011100；For aggregation level set { 8,16,32 }, its corresponding bitmap is 000111.
2) by the way of starting polymerization grade and its span information representing.
For example, referring to Fig. 5, for aggregation level set { 2,4,8 }, using the original position for pointing to polymerization grade 2, and across
Spend pointer for 3 polymerization grades to embody the aggregation level set.Again for example, for aggregation level set { 8,16,32 }, adopt
With the original position for pointing to polymerization grade 8, and span is the pointer of 3 polymerization grades embodying the aggregation level set.
In step S23, base station sends the rrc message to the user equipment.
Then, in step s 11, user equipment receive from base station rrc message, wherein, the rrc message include to
A few aggregation level set.
In step s 12, user equipment determines the ePDCCH number of candidates corresponding to each polymerization grade, with based on each
Polymerization grade and its corresponding ePDCCH number of candidates are performing Downlink Control Information (DCI, Downlink Control
Information blind decoding operation).
Specifically, the user equipment determine the mode of the ePDCCH number of candidates corresponding to each polymerization grade include but
Be not limited to it is following any one：
1) user equipment obtains default ePDCCH number of candidates corresponding with the polymerization grade.
First example of the invention, in a user device included presupposed information as shown in table 1 below：
Table 1
Information as shown in table 2 below is included in the rrc message from base station that user equipment is received：
Table 2
| Transmission mode | Aggregation level set |
| Localized transmission | { 2,4,8 } |
| Distributed transmission | { 8,16,32 } |
Then user equipment can be according to table 1, it is determined that ePDCCH corresponding with each polymerization grade in the aggregation level set is waited
Select quantity as shown in table 3 below：
Table 3
2) user equipment is according to the first configured information from base station, determine with the aggregation level set for being obtained
The corresponding ePDCCH number of candidates of each polymerization grade.
Wherein, first configured information can be contained in the RRC for being previously used for transmitting at least one aggregation level set
In information, also may be included in other signalings of base station transmission.
Which implements the step S121 (not shown) that can refer in embodiments discussed below, and here no longer goes to live in the household of one's in-laws on getting married
State.
It should be noted that the example above is only that technical scheme is better described, rather than the limit to the present invention
System, it should be appreciated by those skilled in the art that any ePDCCH number of candidates determined corresponding to each polymerization grade, with based on each
Individual polymerization grade and its corresponding ePDCCH number of candidates should be included in this performing the implementation of DCI blind decodings operation
In the range of invention.
One of preferably, when base station using the information of user equipment determining at least one polymerization grade collection
Close and during the corresponding ePDCCH number of candidates of each polymerization grade therein, user equipment can be passed through based on same information
With base station identical processing mode, each polymerization grade pair at least one aggregation level set received by base station is determined
The ePDCCH number of candidates answered.
For example, information and use of the base station according to the available resource element of user equipment (RE, Resource Element)
The type of the subframe (subframe) residing for the equipment of family is (such as general cyclic prefix type, that is, " normal CP ", or extension
Cyclic prefix type, that is, " Extended CP ") etc. information, determine adoptable aggregation level set Col1 of user equipment,
And the corresponding ePDCCH number of candidates of each polymerization grade in the set, then, receive from base station in user equipment
After aggregation level set Col1, the type of the information and residing subframe of itself available RE is equally based on, this is determined
The corresponding ePDCCH number of candidates of each polymerization grade in each set in set Col1.
Preferably, the mode according to the embodiment, base station only need to user equipment to send to include to determine in step s 11
At least one aggregation level set rrc message.
One of according to a preferred embodiment of the invention, step S21 also includes step S211 (not shown), step S22
Including step S221 (not shown), step S12 further includes step S121 (not shown).
In step S211, base station determines time corresponding with least one aggregation level set monitored needed for user equipment
Select configured information.
Wherein, candidate's configured information is used to determine ePDCCH number of candidates corresponding with each polymerization grade.It is preferred that
Ground, including but not limited to following any one form of candidate's configured information：
1) aggregation level set and ePDCCH number of candidates corresponding with each polymerization grade in the aggregation level set.
2) aggregation level set and first candidate's rule of correspondence corresponding with the aggregation level set.
The first candidate rule of correspondence include it is all kinds of can be used to determining it is right between polymerization grade and ePDCCH number of candidates
The information that should be related to, it is preferable that the first candidate rule of correspondence includes but is not limited to mapping table, mapping function etc..
Specifically, the base station determines candidate corresponding with least one aggregation level set monitored needed for user equipment
The mode of configured information including but not limited to it is following any one：
1) the first candidate rule of correspondence of the base station according to default polymerization grade and ePDCCH number of candidates, determine with extremely
The corresponding ePDCCH number of candidates of each polymerization grade in a few aggregation level set, with as candidate's configured information.
For example, base station can be calculated according to the information such as polymerization grade, search space and corresponding function, poly- to determine
The corresponding ePDCCH number of candidates of grade is closed, with as candidate's configured information.
Again for example, it is right with the corresponding relation of ePDCCH number of candidates comprising each polymerization grade that base station is stored by itself
In answering table, the corresponding ePDCCH number of candidates of each polymerization grade at least one aggregation level set with determined by is selected,
With as candidate's configured information.
2) the first candidate rule of correspondence of the base station directly using the polymerization grade with ePDCCH number of candidates refers to as candidate
Show information.
It should be noted that the example above is only that technical scheme is better described, rather than the limit to the present invention
System, it should be appreciated by those skilled in the art that any determination and at least one aggregation level set pair monitored needed for user equipment
The implementation of the candidate's configured information answered, should be included in the scope of the present invention.
Then, in step S221, base station is generated comprising at least one aggregation level set and its corresponding candidate
The rrc message of configured information.
In step s 11, user equipment receives the rrc message from base station.Wherein, also include in the rrc message with
The corresponding candidate's configured information of at least one aggregation level set.
Then, in step S121, user equipment is according to corresponding to candidate's configured information determines each polymerization grade
EPDCCH number of candidates, to perform the operation of DCI blind decodings based on each polymerization grade and its corresponding ePDCCH number of candidates.
Specifically, ePDCCH candidate of the user equipment according to corresponding to candidate's configured information determines each polymerization grade
The mode of quantity include it is following any one：
1) when candidate's configured information includes polymerization grade and its corresponding ePDCCH number of candidates, user equipment can be direct
Obtain the corresponding ePDCCH number of candidates of each polymerization grade.
2) when candidate's configured information includes first candidate's rule of correspondence, phase is performed according to the first candidate rule of correspondence
The operation answered, to obtain ePDCCH number of candidates corresponding with each polymerization grade.
For example, when first candidate's rule of correspondence is mapping function, perform the function and calculate to obtain being polymerized with each
The corresponding ePDCCH number of candidates of level；Again for example, when first candidate's rule of correspondence is mapping table, reflected at this according to polymerization grade
Scan in firing table, to obtain ePDCCH number of candidates corresponding with each polymerization grade etc..
It should be noted that the example above is only that technical scheme is better described, rather than the limit to the present invention
System, it should be appreciated by those skilled in the art that any according to corresponding to candidate's configured information determines each polymerization grade
EPDCCH number of candidates, to perform the operation of DCI blind decodings based on each polymerization grade and its corresponding ePDCCH number of candidates
Implementation, should be included in the scope of the present invention.
The method according to the invention, the letter of the aggregation level set by being monitored needed for which for user device configuration by base station
Breath, reduces the polymerization grade of monitoring needed for user equipment, so as to reduce the blind decoding performed needed for user equipment operation, drop
The complexity of low distribution ePDCCH number of candidates operation, and improve efficiency.
Fig. 3 illustrate according to a preferred embodiment of the present invention carry out ePDCCH relevant configurations and obtain the configuration
Method flow diagram；According in the method for the present embodiment, the rrc message also includes corresponding respectively with each aggregation level set
Multiple ePDCCH groups configuration information.The step of being performed by user equipment S11, step are included according to the method for the present embodiment
S12 and S21, step S22 and step S23 the step of performed by base station, wherein, step S12 further includes step
S122, step S21 further include step S212.
Step S11, step S22 and step S23 are described in detail in the embodiment with reference to shown in Fig. 2, and with
The mode of reference is incorporated herein, and repeats no more.
In step S212, base station is according to polymerization grade relevant information and multiple ePDCCH groups corresponding with user equipment
Configuration information, determine each aggregation level set corresponding with the configuration information difference of the plurality of ePDCCH groups.
Wherein, the configuration information is used to determine the ePDCCH groups belonging to each ePDCCH.Preferably, the configuration information
The number of the Physical Resource Block (PRB, Physical Resource Block) used including ePDCCH and its position are believed
Breath.
For example, configuration information of the user equipment comprising two ePDCCH groups, the configuration information of an ePDCCH group is comprising 4
Individual PRB, the configuration information of another ePDCCH groups is comprising 8 PRB.
Specifically, the base station first can determine multiple aggregation level sets according to polymerization grade relevant information, further according to
The configuration information of the plurality of ePDCCH groups, determines that the configuration information of each ePDCCH group is corresponding with each aggregation level set
Relation；Or, base station can consider the configuration information of the polymerization grade relevant information and multiple ePDCCH groups, to determine
The configuration information of each ePDCCH group and the corresponding relation of each aggregation level set.
One of preferably, the base station can also further determine that and at least monitored needed for user equipment
Corresponding second configured information of individual aggregation level set.
Wherein, second configured information be used for determine it is corresponding with each polymerization grade, belong to predetermined ePDCCH groups
EPDCCH number of candidates.Preferably, including but not limited to following any one form of second configured information：
1) aggregation level set and from each polymerization grade is corresponding in the aggregation level set, it is different to be belonging respectively to
The ePDCCH number of candidates of ePDCCH groups.
2) second candidate's rule of correspondence corresponding with aggregation level set.
The second candidate rule of correspondence includes all kinds of ePDCCH that can be used to determine polymerization grade and each ePDCCH group
The information of the corresponding relation between number of candidates, it is preferable that the second candidate rule of correspondence include but is not limited to mapping table,
Mapping function etc..
Wherein, second configured information can be contained in the RRC for being previously used for transmitting at least one aggregation level set
In information, also may be included in other signalings of base station transmission.
Then, in step S222, base station generate comprising with it is right respectively with the configuration information of the plurality of ePDCCH groups
The rrc message of the multiple aggregation level sets answered.
In step S122, user equipment to each aggregation level set, according to its corresponding ePDCCH group with confidence
Breath, it is determined that wherein corresponding to each polymerization grade, ePDCCH number of candidates in the ePDCCH groups, to be polymerized based on each
Grade and its corresponding ePDCCH number of candidates are performing the operation of DCI blind decodings.
Specifically, the user equipment is to each aggregation level set, according to the configuration information of its corresponding ePDCCH group,
It is determined that wherein corresponding to each polymerization grade, the mode of ePDCCH number of candidates in the ePDCCH groups includes but is not limited to
Below any one：
1) configuration information and ePDCCH candidate number of the user equipment according to default each polymerization grade and ePDCCH groups
Corresponding relation between amount, determine it is corresponding to each polymerization grade, with the ePDCCH number of candidates in the ePDCCH groups.
Preferably, the corresponding relation can be mapping function.
2) user equipment is according to the second configured information from base station, determine with the aggregation level set for being obtained
Each polymerization grade it is corresponding, with the ePDCCH number of candidates in the ePDCCH groups.Second configured information exists
It is explained in the preferred implementation of abovementioned steps S212, repeats no more.
Specifically, second configured information of the basis from base station, determine with the aggregation level set for being obtained
Each polymerization grade it is corresponding, the mode with the ePDCCH number of candidates in the ePDCCH groups including but not limited to
Descend any one：
A) when the second configured information include aggregation level set and with each polymerization grade pair in the aggregation level set
During ePDCCH number of candidates answering, being belonging respectively to different ePDCCH groups, user equipment can direct access each polymerization grade
Corresponding ePDCCH number of candidates.
B) when the second configured information includes second candidate's rule of correspondence, phase is performed according to the second candidate rule of correspondence
The operation answered, to obtain ePDCCH number of candidates corresponding with each polymerization grade.
Wherein, the second candidate rule of correspondence is explained in the preferred implementation of abovementioned steps S212, no
Repeat again.
For example, when second candidate's rule of correspondence is mapping function, perform the function and calculate to obtain being polymerized with each
The ePDCCH number of candidates of corresponding, the different ePDCCH groups of level；Again for example, when second candidate's rule of correspondence is mapping table, root
Scan in the mapping table according to polymerization grade, to obtain ePDCCH groups corresponding from each polymerization grade, different
EPDCCH number of candidates etc..
It should be noted that the example above is only that technical scheme is better described, rather than the limit to the present invention
System, it should be appreciated by those skilled in the art that it is any to each aggregation level set, according to its corresponding ePDCCH group with confidence
Breath, it is determined that wherein corresponding to each polymerization grade, ePDCCH number of candidates in the ePDCCH groups, to be polymerized based on each
Grade and its corresponding ePDCCH number of candidates should be included in the present invention's performing the implementation of DCI blind decodings operation
In the range of.
The method according to the invention, can be respectively configured the polymerization corresponding with each group to the user equipment of multigroup ePDCCH
Class set so that user equipment only needs to monitor the aggregation level set corresponding to which to each ePDCCH group, further reduces
The polymerization grade of required monitoring, reduces the degree of difficulty of distribution ePDCCH candidate operations.
Fig. 4 illustrates a kind of ePDCCH relevant configurations that carry out of the invention with the communication system for obtaining the configuration
Structural representation；Communication system of the invention includes the user equipment comprising configuration acquisition device 1 and base station 2.Wherein, match somebody with somebody
Putting acquisition device 1 includes reception device 11 and the first determining device 12, and base station 2 includes the second determining device 21, generating means 22
And dispensing device 23.
According to polymerization grade relevant information, second determining device 21 determines that monitor needed for user equipment at least one gathers
Close class set.
Wherein, the polymerization grade relevant information is included for the various information of aggregation level set is determined for base station.It is excellent
Selection of land, the polymerization grade relevant information include following at least any one information：
1) channel related information of the channel of user equipment；
The channel related information includes but is not limited to related to channel, information that is can affecting aggregation level set.It is excellent
Selection of land, the channel related information include but is not limited to channel quality information, and, affect other information of channel quality etc..
2) the disposal ability information of user equipment；
3) interference information of one or more cells adjacent with the base station；
4) the schedulable resource information of the base station；
5) the resource utilization information of the base station.
Wherein, base station can determine the related letter of the channel of the channel of the user equipment based on the information from user equipment
The disposal ability information of breath and user equipment.For example, based on user equipment channel condition information (Channel Status
The information such as classification (UE Category) Information), belonging to user equipment are determining channel quality information etc..
Those skilled in the art should determine the side for obtaining every polymerization grade relevant information according to practical situation and demand
Method, here is omitted.
Specifically, the second determining device 21 from channel quality residing for user equipment, the disposal ability having and itself
The angle of the optimal utilization of resource, carries out comprehensive assessment to one or more polymerization grade relevant information, distributes to use to determine
The aggregation level set of family equipment.
For example, the channel quality for detecting user equipment when the second determining device 21 is poor, and itself own base station can
When calling resource more, then to the aggregation level set that user equipment allocation is larger；If conversely, the second determining device 21 determines certainly
The resource called of body own base station is less, and user equipment channel quality it is preferable when, then it is only less to its distribution
Aggregation level set.
Preferably, at least one aggregation level set may include all polymerization grade collection that user equipment can be supported
Close, now, the rrc message comprising all aggregation level sets is threshold value configured information.
Generating means 22 generate the rrc message comprising at least one aggregation level set.Wherein, the rrc message
Including the information generated based on radio resource control (RRC, Radio Resource Control).
Wherein, the aggregation level set included in rrc message can have various ways.Preferably, the polymerization grade collection
Conjunction can be represented in following any one mode：
1) using bitmap forms representing.
For example, it is for 1,2,4,8,16,32 this polymerization grade, each corresponding using 1 bit, wherein, 0 represents
The polymerization grade is not applied to, 1 represents the applicable polymerization grade.With reference to Fig. 5, for aggregation level set { 2,4,8 }, which is corresponding
Bitmap is 011100；For aggregation level set { 8,16,32 }, its corresponding bitmap is 000111.
2) by the way of starting polymerization grade and its span information representing.
For example, referring to Fig. 5, for aggregation level set { 2,4,8 }, using the original position for pointing to polymerization grade 2, and across
Spend pointer for 3 polymerization grades to embody the aggregation level set.Again for example, for aggregation level set { 8,16,32 }, adopt
With the original position for pointing to polymerization grade 8, and span is the pointer of 3 polymerization grades embodying the aggregation level set.
Dispensing device 23 sends the rrc message to the user equipment.
Then, reception device 11 receives the rrc message from base station, wherein, the rrc message includes at least one polymerization
Class set.
First determining device 12 determines the ePDCCH number of candidates corresponding to each polymerization grade, with based on each polymerization etc.
Level and its corresponding ePDCCH number of candidates come perform DCI blind decodings operation.
Specifically, first determining device 12 determines the mode of the ePDCCH number of candidates corresponding to each polymerization grade
Including but not limited to it is following any one：
1) the first determining device 12 obtains default ePDCCH number of candidates corresponding with the polymerization grade.
First example of the invention, in a user device included presupposed information as shown in table 4 below：
Table 4
Information as shown in table 5 below is included in the rrc message from base station that reception device 11 is received：
Table 5
| Transmission mode | Aggregation level set |
| Localized transmission | { 2,4,8 } |
| Distributed transmission | { 8,16,32 } |
Then the first determining device 12 is according to table 4, it is determined that corresponding with each polymerization grade in the aggregation level set
EPDCCH number of candidates is as shown in table 6 below：
Table 6
2) the first determining device 12 is determined and the polymerization grade collection for being obtained according to the first configured information from base station
The corresponding ePDCCH number of candidates of each polymerization grade in conjunction.
Wherein, first configured information can be contained in the RRC for being previously used for transmitting at least one aggregation level set
In information, also may be included in other signalings of base station transmission.
Implementing for which can refer to embodiments discussed below (not shown), will not be described here.
It should be noted that the example above is only that technical scheme is better described, rather than the limit to the present invention
System, it should be appreciated by those skilled in the art that any ePDCCH number of candidates determined corresponding to each polymerization grade, with based on each
Individual polymerization grade and its corresponding ePDCCH number of candidates should be included in this performing the implementation of DCI blind decodings operation
In the range of invention.
One of preferably, when base station using the information of user equipment determining at least one polymerization grade collection
Close and during the corresponding ePDCCH number of candidates of each polymerization grade therein, the first determining device 12 in user equipment can base
In same information, by with base station identical processing mode, determine at least one polymerization that reception device 11 is received etc.
The corresponding ePDCCH number of candidates of each polymerization grade in level set.
For example, information and use of the base station according to the available resource element of user equipment (RE, Resource Element)
The type of the subframe (subframe) residing for the equipment of family is (such as general cyclic prefix type, that is, " normal CP ", or extension
Cyclic prefix type, that is, " Extended CP ") etc. information, determine adoptable aggregation level set Col1 of user equipment,
And the corresponding ePDCCH number of candidates of each polymerization grade in the set, then, when the reception device 11 of user equipment is received
To after aggregation level set Col1 of base station, it is available that the first determining device 12 of the user equipment is equally based on itself
The type of the information of RE and residing subframe, determines that each polymerization grade is corresponding in each set in set Col1
EPDCCH number of candidates.
Preferably, the mode according to above-described embodiment, the dispensing device 23 in base station only need to user equipment to send by the
The rrc message of at least one aggregation level set determined by two determining devices 21.
One of according to a preferred embodiment of the invention, second determining device 21, generating means 22 and first determine
Device 21 performs following operation respectively.
Wherein, the second determining device 21 can also determine and at least one aggregation level set monitored needed for user equipment
Corresponding candidate's configured information.
Wherein, candidate's configured information is used to determine ePDCCH number of candidates corresponding with each polymerization grade.It is preferred that
Ground, including but not limited to following any one form of candidate's configured information：
1) aggregation level set and ePDCCH number of candidates corresponding with each polymerization grade in the aggregation level set.
2) aggregation level set and first candidate's rule of correspondence corresponding with the aggregation level set.
The first candidate rule of correspondence include it is all kinds of can be used to determining it is right between polymerization grade and ePDCCH number of candidates
The information that should be related to, it is preferable that the first candidate rule of correspondence includes but is not limited to mapping table, mapping function etc..
Specifically, second determining device 21 determines and at least one aggregation level set monitored needed for user equipment
The mode of corresponding candidate's configured information including but not limited to it is following any one：
1) the first candidate rule of correspondence of second determining device 21 according to default polymerization grade and ePDCCH number of candidates,
To determine ePDCCH number of candidates corresponding with each polymerization grade at least one aggregation level set, with as candidate
Configured information.
For example, the second determining device 21 can be counted according to the information such as polymerization grade, search space and corresponding function
Calculate, to determine the corresponding ePDCCH number of candidates of polymerization grade, with as candidate's configured information.
Again for example, the second determining device 21 is waited with ePDCCH comprising each polymerization grade by itself own base station pre-stored
In selecting the corresponding table of corresponding relation of quantity, each polymerization grade pair at least one aggregation level set with determined by is selected
The ePDCCH number of candidates answered, with as candidate's configured information.
2) the second determining device 21 is directly by the polymerization grade and first candidate's rule of correspondence of ePDCCH number of candidates
As candidate's configured information.
It should be noted that the example above is only that technical scheme is better described, rather than the limit to the present invention
System, it should be appreciated by those skilled in the art that any determination and at least one aggregation level set pair monitored needed for user equipment
The implementation of the candidate's configured information answered, should be included in the scope of the present invention.
Then, generating means 22 are generated comprising at least one aggregation level set and its corresponding candidate's configured information
Rrc message.
Then, the reception device 11 in user equipment receives the rrc message from base station.Wherein, in the rrc message also
Including candidate's configured information corresponding with least one aggregation level set.
Then, ePDCCH of first determining device 12 according to corresponding to candidate's configured information determines each polymerization grade
Number of candidates, to perform the operation of DCI blind decodings based on each polymerization grade and its corresponding ePDCCH number of candidates.
Specifically, the first determining device 12 is according to corresponding to candidate's configured information determines each polymerization grade
The mode of ePDCCH number of candidates include it is following any one：
1) when candidate's configured information includes polymerization grade and its corresponding ePDCCH number of candidates, the first determining device 12
Can the corresponding ePDCCH number of candidates of direct access each polymerization grade.
2) when candidate's configured information includes first candidate's rule of correspondence, the first determining device 12 is according to first candidate couple
Answer rule to perform corresponding operation, to obtain ePDCCH number of candidates corresponding with each polymerization grade.
For example, when first candidate's rule of correspondence is mapping function, the first determining device 12 performs the function and calculates to obtain
To ePDCCH number of candidates corresponding with each polymerization grade；Again for example, when first candidate's rule of correspondence is mapping table, first
Determining device 12 is scanned in the mapping table according to polymerization grade, is waited with obtaining ePDCCH corresponding with each polymerization grade
Select quantity etc..
It should be noted that the example above is only that technical scheme is better described, rather than the limit to the present invention
System, it should be appreciated by those skilled in the art that any according to corresponding to candidate's configured information determines each polymerization grade
EPDCCH number of candidates, to perform the operation of DCI blind decodings based on each polymerization grade and its corresponding ePDCCH number of candidates
Implementation, should be included in the scope of the present invention.
Another preferred embodiment of the invention, it is right respectively with each aggregation level set that the rrc message also includes
The configuration information of the multiple ePDCCH groups answered.According to the method for the present embodiment, second determining device 21, generating means 22 with
And first determining device 12 perform following operation respectively.
Second determining device 21 is according to polymerization grade relevant information and multiple ePDCCH groups corresponding with user equipment
Configuration information, determines each aggregation level set corresponding with the configuration information difference of the plurality of ePDCCH groups.
Wherein, the configuration information is used to determine the ePDCCH groups belonging to each ePDCCH.Preferably, the configuration information
The number of the PRB used including ePDCCH and its positional information.For example, configuration of the user equipment comprising two ePDCCH groups
Information, the configuration information of an ePDCCH group is that the configuration information of another ePDCCH groups is comprising 8 PRB comprising 4 PRB.
Specifically, second determining device 21 first can determine multiple polymerization grade collection according to polymerization grade relevant information
Close, further according to the configuration information of the plurality of ePDCCH groups, determine the configuration information and each polymerization grade of each ePDCCH group
The corresponding relation of set；Or, the second determining device 21 can consider the polymerization grade relevant information and multiple
The configuration information of ePDCCH groups, to determine the configuration information of each ePDCCH group and the corresponding relation of each aggregation level set.
One of preferably, second determining device 21 can also be further determined that supervises with needed for user equipment
Corresponding second configured information of at least one aggregation level set listened.
Wherein, second configured information be used for determine it is corresponding with each polymerization grade, belong to predetermined ePDCCH groups
EPDCCH number of candidates.Preferably, including but not limited to following any one form of second configured information：
1) aggregation level set and from each polymerization grade is corresponding in the aggregation level set, it is different to be belonging respectively to
The ePDCCH number of candidates of ePDCCH groups.
2) second candidate's rule of correspondence corresponding with aggregation level set.
The second candidate rule of correspondence includes all kinds of ePDCCH that can be used to determine polymerization grade and each ePDCCH group
The information of the corresponding relation between number of candidates, it is preferable that the second candidate rule of correspondence include but is not limited to mapping table,
Mapping function etc..
Wherein, second configured information can be contained in the RRC for being previously used for transmitting at least one aggregation level set
In information, also may be included in other signalings of base station transmission.
Then, generating means 22 generate comprising with it is corresponding multiple with the configuration information difference of the plurality of ePDCCH groups
The rrc message of aggregation level set.
First determining device 12 to each aggregation level set, according to the configuration information of its corresponding ePDCCH group, it is determined that
EPDCCH number of candidates wherein corresponding to each polymerization grade, in the ePDCCH groups, with based on each polymerization grade and
Its corresponding ePDCCH number of candidates come perform DCI blind decodings operation.
Specifically, the first determining device 12 is to each aggregation level set, according to its corresponding ePDCCH group with confidence
Breath, it is determined that wherein corresponding to each polymerization grade, the mode of ePDCCH number of candidates in the ePDCCH groups includes but not
Be limited to it is following any one：
1) the first determining device 12 is according to default each polymerization grade and the configuration information and ePDCCH of ePDCCH groups
Corresponding relation between number of candidates, determine it is corresponding to each polymerization grade, with the ePDCCH groups ePDCCH wait
Select quantity.
2) the first determining device 12 is determined and the polymerization grade collection for being obtained according to the second configured information from base station
Each polymerization grade in conjunction it is corresponding, with the ePDCCH number of candidates in the ePDCCH groups.Described second indicates letter
Breath is explained in the preferred implementation of aforementioned second determining device 21, is repeated no more.
Specifically, the first determining device 12 is determined and being polymerized for being obtained according to the second configured information from base station
Each polymerization grade in class set it is corresponding, the mode with the ePDCCH number of candidates in the ePDCCH groups includes
But be not limited to it is following any one：
A) when the second configured information include aggregation level set and with each polymerization grade pair in the aggregation level set
During ePDCCH number of candidates answering, being belonging respectively to different ePDCCH groups, user equipment can direct access each polymerization grade
Corresponding ePDCCH number of candidates.
B) when the second configured information includes second candidate's rule of correspondence, phase is performed according to the second candidate rule of correspondence
The operation answered, to obtain ePDCCH number of candidates corresponding with each polymerization grade.
Wherein, the second candidate rule of correspondence is said in the preferred implementation of aforementioned second determining device 21
It is bright, repeat no more.
For example, when second candidate's rule of correspondence is mapping function, perform the function and calculate to obtain being polymerized with each
The ePDCCH number of candidates of corresponding, the different ePDCCH groups of level；Again for example, when second candidate's rule of correspondence is mapping table, root
Scan in the mapping table according to polymerization grade, to obtain ePDCCH groups corresponding from each polymerization grade, different
EPDCCH number of candidates etc..
It should be noted that the example above is only that technical scheme is better described, rather than the limit to the present invention
System, it should be appreciated by those skilled in the art that it is any to each aggregation level set, according to its corresponding ePDCCH group with confidence
Breath, it is determined that wherein corresponding to each polymerization grade, ePDCCH number of candidates in the ePDCCH groups, to be polymerized based on each
Grade and its corresponding ePDCCH number of candidates should be included in the present invention's performing the implementation of DCI blind decodings operation
In the range of.
Scheme of the invention, the letter of the aggregation level set by being monitored needed for which for user device configuration by base station
Breath, reduces the polymerization grade of monitoring needed for user equipment, so as to reduce the blind decoding performed needed for user equipment operation, drop
The complexity of low distribution ePDCCH number of candidates operation, and efficiency is improve, further, it is possible to set to the user of multigroup ePDCCH
It is standby to be respectively configured the aggregation level set corresponding with each group so that user equipment only needs its institute of monitoring right to each ePDCCH group
The aggregation level set answered, the polymerization grade of monitoring needed for further reducing reduce the tired of distribution ePDCCH candidate operations
Difficulty.
The software program of the present invention can pass through computing device to realize steps described above or function.Similarly, originally
The software program of invention can be stored in computer readable recording medium storing program for performing (including related data structure), and for example, RAM is deposited
Reservoir, magnetically or optically driver or floppy disc and similar devices.In addition, some steps or function of the present invention can employ hardware to reality
It is existing, for example, as coordinating so as to perform the circuit of each function or step with processor.
In addition, the part of the present invention can be applied to computer program, such as computer program instructions, when its quilt
When computer is performed, by the operation of the computer, the method according to the invention and/or technical scheme can be called or provide.
And the programmed instruction of the method for the present invention is called, it is possibly stored in fixed or moveable recording medium, and/or passes through
Data flow in broadcast or other signal bearing medias and be transmitted, and/or be stored according to described program instruction operation
In the working storage of computer equipment.Here, including a device according to one embodiment of present invention, the device includes using
In the memorizer and the processor for execute program instructions of storage computer program instructions, wherein, when the computer program refers to
When order is by the computing device, method and/or skill of the plant running based on aforementioned multiple embodiments of the invention are triggered
Art scheme.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of spirit or essential attributes without departing substantially from the present invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as and limit involved claim.This
Outward, it is clear that " including ", a word was not excluded for other units or step, and odd number is not excluded for plural number.That what is stated in system claims is multiple
Unit or device can also be realized by software or hardware by a unit or device.The first, the second grade word is used for table
Show title, and be not offered as any specific order.
Claims (13)
1. it is a kind of in a user device obtain ePDCCH relevant configurations method, wherein, the method comprising the steps of：
A receives the rrc message from base station, wherein, the rrc message includes at least one aggregation level set；
B determines the ePDCCH number of candidates corresponding to each polymerization grade, with based on each polymerization grade and its corresponding
EPDCCH number of candidates come perform DCI blind decodings operation.
2. method according to claim 1, wherein, also include in the rrc message and at least one polymerization grade
Gather corresponding candidate's configured information, candidate's configured information is used to determine ePDCCH candidates corresponding with each polymerization grade
Quantity, wherein, step b includes：
- ePDCCH number of candidates according to corresponding to candidate's configured information determines each polymerization grade, with poly- based on each
Close grade and its corresponding ePDCCH number of candidates to perform the operation of DCI blind decodings.
3. method according to claim 1 and 2, wherein, the rrc message also includes and each aggregation level set is distinguished
The configuration information of corresponding multiple ePDCCH groups, wherein, step b is comprised the following steps：
- to each aggregation level set, according to the configuration information of its corresponding ePDCCH group, it is determined that wherein each polymerization grade institute
EPDCCH number of candidates in corresponding, described ePDCCH groups, with based on each polymerization grade and its corresponding ePDCCH candidates
Quantity come perform DCI blind decodings operation.
4. a kind of method for carrying out ePDCCH relevant configurations for user equipment realized in a base station, wherein, methods described includes
Following steps：
A determines at least one aggregation level set monitored needed for user equipment according to polymerization grade relevant information；Wherein,
Step A is further comprising the steps of：
- determine candidate's configured information corresponding with least one aggregation level set monitored needed for user equipment；
B generates the rrc message comprising at least one aggregation level set and its corresponding candidate's configured information；
C sends the rrc message to the user equipment.
5. method according to claim 4, wherein, step A is comprised the following steps：
- according to polymerization grade relevant information and the configuration information of multiple ePDCCH groups corresponding with user equipment, determine with
The configuration information of the plurality of ePDCCH groups distinguishes corresponding multiple aggregation level sets；
Wherein, step B is comprised the following steps：
- generate comprising with multiple aggregation level sets corresponding with the configuration information difference of the plurality of ePDCCH groups RRC
Information.
6. the method according to claim 4 or 5, wherein, the polymerization grade relevant information includes following at least any one
Information：
The channel related information of channel residing for-user equipment；
The disposal ability information of-user equipment；
The interference information of-one or more cells adjacent with the base station；
The schedulable resource information of-base station；
The resource utilization information of-base station.
7. it is a kind of in a user device obtain ePDCCH relevant configurations configuration acquisition device, wherein, the configuration device includes：
Reception device, for receiving the rrc message from base station, wherein, the rrc message includes at least one polymerization grade collection
Close；
First determining device, for determining the ePDCCH number of candidates corresponding to each polymerization grade, with based on each polymerization etc.
Level and its corresponding ePDCCH number of candidates come perform DCI blind decodings operation.
8. configuration acquisition device according to claim 7, wherein, also include in the rrc message and described at least one
The corresponding candidate's configured information of aggregation level set, it is corresponding with each polymerization grade that candidate's configured information is used for determination
The quantity of ePDCCH candidates, wherein, first determining device for according to candidate's configured information determine it is each polymerization etc.
EPDCCH number of candidates corresponding to level, performs DCI with based on each polymerization grade and its corresponding ePDCCH number of candidates
Blind decoding is operated.
9. the configuration acquisition device according to claim 7 or 8, wherein, the rrc message also includes and each polymerization grade
The configuration information of the corresponding multiple ePDCCH groups of set difference, wherein, first determining device is for each polymerization grade
Set, according to the configuration information of its corresponding ePDCCH group, it is determined that wherein corresponding to each polymerization grade, the candidate
EPDCCH number of candidates in ePDCCH groups, is performed with based on each polymerization grade and its corresponding ePDCCH number of candidates
DCI blind decodings are operated.
10. a kind of base station for ePDCCH relevant configurations are carried out for user equipment, wherein, the base station includes：
Second determining device, for according to polymerization grade relevant information, determining that monitor needed for user equipment at least one gathers
Close class set；Wherein, second determining device is additionally operable to determine at least one polymerization grade monitored needed for user equipment
Set and its corresponding candidate's configured information；
Generating means, for generating the RRC comprising at least one aggregation level set and its corresponding candidate's configured information
Information；
Dispensing device, for sending the rrc message to the user equipment.
11. base stations according to claim 10, wherein, second determining device is for according to polymerization grade relevant information
And the configuration information of multiple ePDCCH groups corresponding with user equipment, determine the configuration information with the plurality of ePDCCH groups
Corresponding each aggregation level set of difference；
The generating means be used for generate comprising with institute it is corresponding with the configuration information difference of the plurality of ePDCCH groups it is multiple gather
Close the rrc message of class set.
12. base stations according to claim 10 or 11, wherein, the polymerization grade relevant information includes following at least arbitrary
Item information：
The channel related information of channel residing for-user equipment；
The disposal ability information of-user equipment；
The interference information of-one or more cells adjacent with the base station；
The schedulable resource information of-base station；
The resource utilization information of-base station.
A kind of 13. communication systems, wherein, the communication system is included comprising according at least any one in claim 7 to 9
Configuration acquisition device user equipment, and the base station according at least any one in claim 10 to 12.
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| CN110192418B (en) * | 2017-01-26 | 2021-09-14 | 华为技术有限公司 | Method and device for processing downlink control information |
| US10757718B2 (en) * | 2017-02-16 | 2020-08-25 | Qualcomm Incorporated | Post-puncture indication for mobile broadband and low latency communication multiplexing |
| CN108811133A (en) * | 2017-05-05 | 2018-11-13 | 电信科学技术研究院 | A kind of transmission method and device of down control channel |
| CN109429316B (en) * | 2017-08-29 | 2020-07-17 | 中国移动通信有限公司研究院 | Method and device for blind detection and readable storage medium |
| CN109495221B (en) | 2017-09-10 | 2021-11-19 | 华为技术有限公司 | Search space determination method and device |
| CN110677911B (en) * | 2018-07-03 | 2022-05-20 | 大唐移动通信设备有限公司 | Method and device for sending configuration information of physical downlink control channel |
| CN110876179B (en) * | 2018-08-31 | 2021-06-15 | 华为技术有限公司 | Monitoring method and device |
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Address after: No. 388, ningqiao Road, China (Shanghai) free trade test area, Pudong New Area, Shanghai Co-patentee after: Alcatel Optical Networks Israe Patentee after: Shanghai NOKIA Baer Limited by Share Ltd Address before: 201206 Pudong New Area Jinqiao Ning Road, Shanghai, No. 388 Co-patentee before: Alcatel Optical Networks Israe Patentee before: Shanghai Alcatel-Lucent Co., Ltd. |