CN103716144A - Methods and apparatus for carrying out ePDCCH correlated configuration and obtaining the same, and system - Google Patents
Methods and apparatus for carrying out ePDCCH correlated configuration and obtaining the same, and system Download PDFInfo
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- CN103716144A CN103716144A CN201210377990.1A CN201210377990A CN103716144A CN 103716144 A CN103716144 A CN 103716144A CN 201210377990 A CN201210377990 A CN 201210377990A CN 103716144 A CN103716144 A CN 103716144A
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Abstract
The invention aims at providing methods and apparatus for carrying out enhanced physical downlink control channel (ePDCCH) correlated configuration and obtaining the same, and a system. The method for obtaining the ePDCCH correlated configuration comprises the following steps: receiving RRC information including at least one aggregation level set from a base station; and determining the ePDCCH candidate number corresponding to each aggregation level so as to execute a DCI blind decoding operation based on all the aggregation levels and the corresponding ePDCCH candidate numbers. The methods, apparatuses and the system have the following advantages: because different aggregation level sets can be configured for user equipment, the user equipment does not need to monitor all the aggregation levels, so that the number of aggregation levels needing monitoring can be effectively reduced and the number of times of blind decoding can also be reduced and thus the ePDCCH candidate distribution can be executed easily.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of ePDCCH of carrying out relevant configuration and obtain the methods, devices and systems of this configuration.
Background technology
In prior art, downlink physical control channel (the ePDCCH strengthening, ehanced Physical Downlink Control Channel) polymerization grade (AL, Aggregation Level) based on 3GPP RAN 1#70, meeting is determined, wherein, and based on the determined polymerization grade of this agreement, the sum of its blind decoding is at 32 or 48 times, and, need to distribute carefully ePDCCH candidate at inter-stages such as polymerizations, to avoid surpassing the sum of blind decoding.Yet the polymerization class set that ePDCCH supports is not identical with traditional PDCCH, and along with different application scenarioss, change (for example, the situation of conventional CP and expansion CP).If monitor all polymerization grades as traditional PD CCH, can be very difficult when distributing ePDCCH candidate.And determined according to 3GPP RAN 1#70 meeting, the sum of blind decoding need to be separate with the ePDCCH configuring group, ePDCCH candidate's distribution meeting is more complicated in this case.
Summary of the invention
The object of this invention is to provide a kind of ePDCCH of carrying out relevant configuration and obtain the methods, devices and systems of this configuration.
According to an aspect of the present invention, provide a kind of method of obtaining ePDCCH relevant configuration in subscriber equipment, wherein, said method comprising the steps of:
A receives the rrc message from base station, and wherein, described rrc message comprises at least one polymerization class set;
B determines the corresponding ePDCCH number of candidates of each polymerization grade, to carry out the operation of DCI blind decoding based on each polymerization grade and corresponding ePDCCH number of candidates thereof.
According to an aspect of the present invention, also provide a kind of in base station, realize for subscriber equipment carries out the method for ePDCCH relevant configuration, wherein, said method comprising the steps of:
A, according to polymerization rank correlation information, determines at least one polymerization class set of the required monitoring of subscriber equipment;
B generates the rrc message that comprises described at least one polymerization class set;
C sends described rrc message to described subscriber equipment.
According to an aspect of the present invention, also provide a kind of configuration acquisition device that obtains ePDCCH relevant configuration in subscriber equipment, wherein, described inking device comprises:
Receiving system, for receiving the rrc message from base station, wherein, described rrc message comprises at least one polymerization class set;
The first determining device, for determining the corresponding ePDCCH number of candidates of each polymerization grade, to carry out the operation of DCI blind decoding based on each polymerization grade and corresponding ePDCCH number of candidates thereof.
According to an aspect of the present invention, also provide a kind of base station that is used to subscriber equipment to carry out ePDCCH relevant configuration, wherein, described base station comprises:
The second determining device, for according to polymerization rank correlation information, determines at least one polymerization class set of the required monitoring of subscriber equipment;
Generating apparatus, for generating the rrc message that comprises described at least one polymerization class set;
Dispensing device, for sending described rrc message to described subscriber equipment.
According to an aspect of the present invention, also provide a kind of communication system, wherein, described communication system comprises the subscriber equipment that comprises described configuration acquisition device, and described base station.
Compared with prior art, the present invention has the following advantages: method of the present invention can be the different polymerization class set of user device configuration, make subscriber equipment without monitoring all polymerization grades, therefore can effectively reduce the polymerization grade that needs monitoring, reduce the number of times of blind decoding, thereby ePDCCH candidate's distribution is more easily carried out.
Accompanying drawing explanation
By reading the detailed description that non-limiting example is done of doing with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:
Fig. 1 has illustrated according to a kind of communication system of the present invention;
Fig. 2 has illustrated according to a kind of ePDCCH of carrying out relevant configuration of the present invention and has obtained the method flow diagram of this configuration;
Fig. 3 has illustrated carrying out ePDCCH relevant configuration and obtaining the method flow diagram of this configuration according to a preferred embodiment of the present invention;
Fig. 4 has illustrated according to a kind of ePDCCH of carrying out relevant configuration of the present invention and the structural representation that obtains the communication system of this configuration;
Fig. 5 has illustrated according to the schematic diagram of polymerization class set of the present invention.
In accompanying drawing, same or analogous Reference numeral represents same or analogous parts.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Fig. 1 has illustrated according to a kind of communication system of the present invention.Wherein, communication system according to the present invention comprises at least one base station and at least one subscriber equipment corresponding with it.In communication system as shown in Figure 1, comprise base station, first user equipment and the second subscriber equipment.
Wherein, described communication system includes but not limited to as the wireless communication system based on 3GPP LTE.Described subscriber equipment comprises and can with wireless mode directly or indirectly and the electronic installation of base station communication, include but not limited to mobile phone, PDA etc.Described base station includes but 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 described communication system, base station and subscriber equipment are not limited with described.
Wherein, base station is respectively first user equipment and the second user device configuration ePDCCH, and the signaling relevant to configuration is sent to corresponding subscriber equipment, subscriber equipment receives after the signaling from base station, and the polymerization class set based on comprising in this signaling is carried out corresponding blind decoding operation.
Fig. 2 has illustrated according to a kind of ePDCCH of carrying out relevant configuration of the present invention and has obtained the method flow diagram of this configuration.The method according to this invention comprises step S11, step S12 and the step S21 being carried out by base station, step S22 and the step S23 being carried out by subscriber equipment.
In step S21, at least one polymerization class set of the required monitoring of subscriber equipment, according to polymerization rank correlation information, is determined in base station.
Wherein, described polymerization rank correlation information comprises for determine the various information of polymerization class set for base station.Preferably, described polymerization rank correlation information comprises following at least any one information:
1) channel related information of the channel of subscriber equipment;
Described channel related information includes but not limited to information relevant to channel, that can affect polymerization class set.Preferably, described channel related information includes but not limited to channel quality information, and, affect other information of channel quality etc.
2) the disposal ability information of subscriber equipment;
3) interfere information of the one or more communities adjacent with described base station;
4) the dispatched resource information of described base station;
5) the resource utilization information of described base station.
Wherein, base station can be based on determining described subscriber equipment from the information of subscriber equipment the channel related information of channel and the disposal ability information of subscriber equipment.For example, the information such as classification (UE Category) under the channel condition information based on subscriber equipment (Channel Status Information), subscriber equipment are determined channel quality information etc.
Those skilled in the art should obtain the method for every polymerization rank correlation information according to actual conditions and Location of requirement, repeat no more herein.
Particularly, comprehensive assessment, from the angle of the optimal utilization of subscriber equipment channel quality of living in, the disposal ability having and own resource, is carried out to one or more polymerization rank correlation information in base station, to determine the polymerization class set of distributing to subscriber equipment.
For example, when base station, active user's channel quality to be detected poor, and self available resources is when more, to the larger polymerization grade of user equipment allocation; Otherwise, less if self can call resource, and channel quality is good time, only to it, distributes less polymerization grade.
Preferably, described at least one polymerization class set can comprise all polymerization class set that subscriber equipment can be supported, now, the rrc message that comprises these all polymerization class set is threshold value indication information.
In step S22, base station generates the rrc message that comprises described at least one polymerization class set.Wherein, described rrc message comprises the information generating based on radio resource control (RRC, Radio Resource Control).
Wherein, the polymerization class set comprising in rrc message can have various ways.Preferably, described polymerization class set below any mode represent:
1) adopt bitmap form to represent.
For example, for 1,2,4,8,16,32 these polymerization grades, adopt separately 1 bit corresponding with it, wherein, 0 represents inapplicable this polymerization grade, and 1 represents applicable this polymerization grade.With reference to Fig. 5, for polymerization class set 2,4,8}, its corresponding bitmap is 011100; For polymerization class set, { 8,16,32}, its corresponding bitmap is 000111.
2) adopt the mode of starting polymerization grade and span information thereof to represent.
For example, with reference to Fig. 5, for polymerization class set, { 2,4,8}, adopt to point to the original position of polymerization grade 2, and span is that the pointer of 3 polymerization grades embodies this polymerization class set.Again for example, for polymerization class set, { 8,16,32}, adopt to point to the original position of polymerization grade 8, and span is that the pointer of 3 polymerization grades embodies this polymerization class set.
In step S23, base station sends described rrc message to described subscriber equipment.
Then, in step S11, subscriber equipment receives the rrc message from base station, and wherein, described rrc message comprises at least one polymerization class set.
In step S12, subscriber equipment is determined the corresponding ePDCCH number of candidates of each polymerization grade, with the ePDCCH number of candidates based on each polymerization grade and correspondence thereof, carry out the blind decoding operation of Downlink Control Information (DCI, Downlink Control Information).
Particularly, described subscriber equipment determine the mode of the corresponding ePDCCH number of candidates of each polymerization grade include but not limited to following any:
1) subscriber equipment obtains the default ePDCCH number of candidates corresponding with described polymerization grade.
According to the first example of the present invention, in subscriber equipment, comprised presupposed information as shown in table 1 below:
Table 1
In the rrc message from base station that subscriber equipment receives, comprise information as shown in table 2 below:
Table 2
| Transmission mode | Polymerization class set |
| Localized transmission | {2，4，8} |
| Distributed transmission | {8，16，32} |
Subscriber equipment can, according to table 1, determine that the ePDCCH number of candidates corresponding with each polymerization grade in this polymerization class set is as shown in table 3 below:
Table 3
2) subscriber equipment, according to the first indication information from base station, carrys out the corresponding ePDCCH number of candidates of each polymerization grade in definite and obtained polymerization class set.
Wherein, described the first indication information can be contained in aforementioned for transmitting the rrc message of at least one polymerization class set, also can be contained in other signalings of base station transmission.
The specific implementation of which can, with reference to the step S121 (not shown) in following preferred embodiment, not repeat them here.
It should be noted that, above-mentioned for example only for technical scheme of the present invention is described better, but not limitation of the present invention, those skilled in the art should understand that, any definite corresponding ePDCCH number of candidates of each polymerization grade, to carry out based on each polymerization grade and corresponding ePDCCH number of candidates thereof the implementation that DCI blind decoding operates, all should be within the scope of the present invention.
As one of preferred implementation, when base station adopts the information of subscriber equipment to determine at least one polymerization class set and ePDCCH number of candidates corresponding to wherein each polymerization grade, subscriber equipment can be based on same information, by the processing mode identical with base station, determine ePDCCH number of candidates corresponding to each polymerization grade at least one the polymerization class set being received by base station.
For example, resource element (the RE that base station can be used according to subscriber equipment, the type of the residing subframe of information Resource Element) and subscriber equipment (subframe) is (as general cyclic prefix type, that is " normal CP ", or extended cyclic prefix type, that is " Extended CP ") etc. information, determine the adoptable polymerization class set of subscriber equipment Col1, and ePDCCH number of candidates corresponding to each polymerization grade in this set, then, at subscriber equipment, receive after this polymerization class set Col1 from base station, same based on self information of available RE and the type of residing subframe, determine in this set Col1 ePDCCH number of candidates corresponding to each polymerization grade in each set.
Preferably, according to the mode of described embodiment, base station only needs to send to subscriber equipment the rrc message that is included at least one polymerization class set of determining in step S11.
One of according to a preferred embodiment of the invention, described step S21 also comprises step S211 (not shown), and step S22 comprises step S221 (not shown), and described step S12 further comprises step S121 (not shown).
In step S211, the candidate indication information corresponding with at least one polymerization class set of the required monitoring of subscriber equipment determined in base station.
Wherein, described candidate's indication information is for determining the ePDCCH number of candidates corresponding with each polymerization grade.Preferably, described candidate's indication information includes but not limited to following any form:
1) polymerization class set and the ePDCCH number of candidates corresponding with each polymerization grade in this polymerization class set.
2) polymerization class set and the first candidate rule of correspondence corresponding with this polymerization class set.
Described first candidate's rule of correspondence comprises all kinds of information that can be used for determining the corresponding relation between polymerization grade and ePDCCH number of candidates, and preferably, described first candidate's rule of correspondence includes but not limited to mapping table, mapping function etc.
Particularly, described base station determine the mode of the candidate indication information corresponding with at least one polymerization class set of the required monitoring of subscriber equipment include but not limited to following any:
1) the ePDCCH number of candidates corresponding with each polymerization grade at least one polymerization class set, according to first candidate's rule of correspondence of default polymerization grade and ePDCCH number of candidates, determined in base station, usings it as candidate's indication information.
For example, base station can be calculated according to the information such as polymerization grade, search volume and corresponding function, with the ePDCCH number of candidates of determining that polymerization grade is corresponding, usings it as candidate's indication information.
Again for example, base station is in the corresponding table that comprises each polymerization grade and the corresponding relation of ePDCCH number of candidates of self storage, select the ePDCCH number of candidates corresponding with each polymerization grade in determined at least one polymerization class set, using it as candidate's indication information.
2) base station is directly using first candidate's rule of correspondence of described polymerization grade and ePDCCH number of candidates as candidate's indication information.
It should be noted that, above-mentioned for example only for technical scheme of the present invention is described better, but not limitation of the present invention, those skilled in the art should understand that, any implementation of determining the candidate indication information corresponding with at least one polymerization class set of the required monitoring of subscriber equipment, all should be within the scope of the present invention.
Then,, in step S221, base station generates the rrc message of the candidate's indication information that comprises described at least one polymerization class set and correspondence thereof.
In step S11, subscriber equipment receives the rrc message from base station.Wherein, in described rrc message, also comprise the candidate indication information corresponding with described at least one polymerization class set.
Then, in step S121, subscriber equipment is determined the corresponding ePDCCH number of candidates of each polymerization grade according to described candidate's indication information, to carry out the operation of DCI blind decoding based on each polymerization grade and corresponding ePDCCH number of candidates thereof.
Particularly, subscriber equipment according to described candidate's indication information determine the mode of the corresponding ePDCCH number of candidates of each polymerization grade comprise following any:
1) when candidate's indication information comprises the ePDCCH number of candidates of polymerization grade and correspondence thereof, subscriber equipment can directly obtain ePDCCH number of candidates corresponding to each polymerization grade.
2), when candidate's indication information comprises first candidate's rule of correspondence, according to this first candidate rule of correspondence, carry out corresponding operation, to obtain the ePDCCH number of candidates corresponding with each polymerization grade.
For example, when first candidate's rule of correspondence is mapping function, carries out this function and calculate to obtain the ePDCCH number of candidates corresponding with each polymerization grade; Again for example, when first candidate's rule of correspondence is mapping table, according to polymerization grade, in this mapping table, search for, to obtain the ePDCCH number of candidates corresponding with each polymerization grade etc.
It should be noted that, above-mentioned for example only for technical scheme of the present invention is described better, but not limitation of the present invention, those skilled in the art should understand that, anyly according to described candidate's indication information, determine the corresponding ePDCCH number of candidates of each polymerization grade, to carry out based on each polymerization grade and corresponding ePDCCH number of candidates thereof the implementation that DCI blind decoding operates, all should be within the scope of the present invention.
The method according to this invention, by being the information of the polymerization class set of its required monitoring of user device configuration by base station, reduced the polymerization grade of the required monitoring of subscriber equipment, thereby reduced the blind decoding operation of the required execution of subscriber equipment, reduced and distributed the complexity of ePDCCH number of candidates operation, and improved efficiency.
Fig. 3 has illustrated carrying out ePDCCH relevant configuration and obtaining the method flow diagram of this configuration according to a preferred embodiment of the present invention; According in the method for the present embodiment, described rrc message also comprises the configuration information of a plurality of ePDCCHs groups corresponding with each polymerization class set difference.According to the method for the present embodiment, comprise step S11, step S12 and the step S21 being carried out by base station, step S22 and the step S23 being carried out by subscriber equipment, wherein, described step S12 further comprises step S122, and step S21 further comprises step S212.
Described step S11, step S22 and step S23 are described in detail in reference to the embodiment shown in Fig. 2, and are contained in this by reference, repeat no more.
In step S212, each polymerization class set corresponding with the configuration information difference of described a plurality of ePDCCH groups, according to the configuration information of polymerization rank correlation information and corresponding with subscriber equipment a plurality of ePDCCH groups, determined in base station.
Wherein, the ePDCCH group of described configuration information for determining that each ePDCCH is affiliated.Preferably, the number that described configuration information comprises the Physical Resource Block (PRB, Physical Resource Block) that ePDCCH is used with and positional information.
For example, the configuration information that subscriber equipment comprises two ePDCCH groups, the configuration information of an ePDCCH group is for comprising 4 PRB, and the configuration information of another ePDCCH group is for comprising 8 PRB.
Particularly, a plurality of polymerization class set can first be determined according to polymerization rank correlation information in described base station, then according to the configuration information of described a plurality of ePDCCH groups, determine the configuration information of each ePDCCH group and the corresponding relation of each polymerization class set; Or base station can consider the configuration information of described polymerization rank correlation information and a plurality of ePDCCH group, to determine the configuration information of each ePDCCH group and the corresponding relation of each polymerization class set.
As one of preferred implementation, second indication information corresponding with at least one polymerization class set of the required monitoring of subscriber equipment also can further be determined in described base station.
Wherein, described the second indication information is for determining ePDCCH number of candidates corresponding with each polymerization grade, that belong to predetermined ePDCCH group.Preferably, described the second indication information includes but not limited to following any form:
1) polymerization class set and ePDCCH number of candidates corresponding from each polymerization grade in this polymerization class set, that belong to respectively different ePDCCH group.
2) the second candidate rule of correspondence corresponding with polymerization class set.
Described second candidate's rule of correspondence comprises all kinds of information that can be used for determining the corresponding relation between the ePDCCH number of candidates that polymerization grade and each ePDCCH organize, and preferably, described second candidate's rule of correspondence includes but not limited to mapping table, mapping function etc.
Wherein, described the second indication information can be contained in aforementioned for transmitting the rrc message of at least one polymerization class set, also can be contained in other signalings of base station transmission.
Then,, in step S222, base station generates and to comprise the rrc message that the configuration information of organizing with institute and described a plurality of ePDCCH is distinguished corresponding a plurality of polymerization class set.
In step S122, subscriber equipment is to each polymerization class set, according to the configuration information of its corresponding ePDCCH group, ePDCCH number of candidates in definite wherein corresponding, described ePDCCH group of each polymerization grade, to carry out the operation of DCI blind decoding based on each polymerization grade and corresponding ePDCCH number of candidates thereof.
Particularly, described subscriber equipment is to each polymerization class set, according to the configuration information of its corresponding ePDCCH group, the mode of determining the ePDCCH number of candidates in corresponding, the described ePDCCH group of each polymerization grade wherein include but not limited to following any:
1) subscriber equipment, according to each default polymerization grade and the configuration information of ePDCCH group and the corresponding relation between ePDCCH number of candidates, is determined that each polymerization grade is corresponding, is had the ePDCCH number of candidates in described ePDCCH group.
Preferably, described corresponding relation can be mapping function.
2) subscriber equipment is according to from the second indication information of base station, determine and obtained polymerization class set in each polymerization grade corresponding, there is the ePDCCH number of candidates in described ePDCCH group.Described the second indication information is explained in the preferred implementation of abovementioned steps S212, repeats no more.
Particularly, described basis is from the second indication information of base station, determine and obtained polymerization class set in each polymerization grade mode corresponding, that there is the ePDCCH number of candidates in described ePDCCH group include but not limited to following any:
A) when the second indication information comprise polymerization class set and corresponding from each polymerization grade in this polymerization class set, while belonging to respectively the ePDCCH number of candidates of different ePDCCH group, subscriber equipment can directly obtain ePDCCH number of candidates corresponding to each polymerization grade.
B), when the second indication information comprises second candidate's rule of correspondence, according to this second candidate rule of correspondence, carry out corresponding operation, to obtain the ePDCCH number of candidates corresponding with each polymerization grade.
Wherein, described second candidate's rule of correspondence is explained in the preferred implementation of abovementioned steps S212, repeats no more.
For example, when second candidate's rule of correspondence is mapping function, carries out this function and calculate to obtain ePDCCH number of candidates corresponding with each polymerization grade, different e PDCCH group; Again for example, when second candidate's rule of correspondence is mapping table, according to polymerization grade, in this mapping table, search for, to obtain ePDCCH number of candidates corresponding with each polymerization grade, different e PDCCH group etc.
It should be noted that, above-mentioned for example only for technical scheme of the present invention is described better, but not limitation of the present invention, those skilled in the art should understand that, any to each polymerization class set, according to the configuration information of its corresponding ePDCCH group, ePDCCH number of candidates in definite wherein corresponding, described ePDCCH group of each polymerization grade, to carry out based on each polymerization grade and corresponding ePDCCH number of candidates thereof the implementation that DCI blind decoding operates, all should be within the scope of the present invention.
The method according to this invention, can configure respectively with each and organize corresponding polymerization class set the subscriber equipment of many groups ePDCCH, make subscriber equipment only need to monitor its corresponding polymerization class set to each ePDCCH group, further reduce the polymerization grade of required monitoring, reduced the degree of difficulty that distributes ePDCCH candidate operations.
Fig. 4 has illustrated according to a kind of ePDCCH of carrying out relevant configuration of the present invention and the structural representation that obtains the communication system of this configuration; Communication system according to the present invention comprises and comprises subscriber equipment and the base station 2 that configures acquisition device 1.Wherein, configuration acquisition device 1 comprises receiving system 11 and the first determining device 12, and base station 2 comprises the second determining device 21, generating apparatus 22 and dispensing device 23.
The second determining device 21, according to polymerization rank correlation information, is determined at least one polymerization class set of the required monitoring of subscriber equipment.
Wherein, described polymerization rank correlation information comprises for determine the various information of polymerization class set for base station.Preferably, described polymerization rank correlation information comprises following at least any one information:
1) channel related information of the channel of subscriber equipment;
Described channel related information includes but not limited to information relevant to channel, that can affect polymerization class set.Preferably, described channel related information includes but not limited to channel quality information, and, affect other information of channel quality etc.
2) the disposal ability information of subscriber equipment;
3) interfere information of the one or more communities adjacent with described base station;
4) the dispatched resource information of described base station;
5) the resource utilization information of described base station.
Wherein, base station can be based on determining described subscriber equipment from the information of subscriber equipment the channel related information of channel and the disposal ability information of subscriber equipment.For example, the information such as classification (UE Category) under the channel condition information based on subscriber equipment (Channel Status Information), subscriber equipment are determined channel quality information etc.
Those skilled in the art should obtain the method for every polymerization rank correlation information according to actual conditions and Location of requirement, repeat no more herein.
Particularly, the second determining device 21 is from the angle of the optimal utilization of subscriber equipment channel quality of living in, the disposal ability having and own resource, one or more polymerization rank correlation information is carried out to comprehensive assessment, to determine the polymerization class set of distributing to subscriber equipment.
For example, the channel quality that subscriber equipment detected when the second determining device 21 is poor, and when under self, the resource called of base station is more, to the larger polymerization class set of user equipment allocation; Otherwise if the second determining device 21 determines that the resource called of base station is less under self, and the channel quality of subscriber equipment is good time, only distributes less polymerization class set to it.
Preferably, described at least one polymerization class set can comprise all polymerization class set that subscriber equipment can be supported, now, the rrc message that comprises these all polymerization class set is threshold value indication information.
Wherein, the polymerization class set comprising in rrc message can have various ways.Preferably, described polymerization class set below any mode represent:
1) adopt bitmap form to represent.
For example, for 1,2,4,8,16,32 these polymerization grades, adopt separately 1 bit corresponding with it, wherein, 0 represents inapplicable this polymerization grade, and 1 represents applicable this polymerization grade.With reference to Fig. 5, for polymerization class set 2,4,8}, its corresponding bitmap is 011100; For polymerization class set, { 8,16,32}, its corresponding bitmap is 000111.
2) adopt the mode of starting polymerization grade and span information thereof to represent.
For example, with reference to Fig. 5, for polymerization class set, { 2,4,8}, adopt to point to the original position of polymerization grade 2, and span is that the pointer of 3 polymerization grades embodies this polymerization class set.Again for example, for polymerization class set, { 8,16,32}, adopt to point to the original position of polymerization grade 8, and span is that the pointer of 3 polymerization grades embodies this polymerization class set.
Then, the rrc message that receiving system 11 receives from base station, wherein, described rrc message comprises at least one polymerization class set.
The first determining device 12 is determined the corresponding ePDCCH number of candidates of each polymerization grade, to carry out the operation of DCI blind decoding based on each polymerization grade and corresponding ePDCCH number of candidates thereof.
Particularly, described the first determining device 12 determine the mode of the corresponding ePDCCH number of candidates of each polymerization grade include but not limited to following any:
1) the first determining device 12 is obtained the default ePDCCH number of candidates corresponding with described polymerization grade.
According to the first example of the present invention, in subscriber equipment, comprised presupposed information as shown in table 4 below:
Table 4
In the rrc message from base station that receiving system 11 receives, comprise information as shown in table 5 below:
Table 5
| Transmission mode | Polymerization class set |
| Localized transmission | {2，4，8} |
| Distributed transmission | {8，16，32} |
The first determining device 12, according to table 4, determines that the ePDCCH number of candidates corresponding with each polymerization grade in this polymerization class set is as shown in table 6 below:
Table 6
2) the first determining device 12, according to the first indication information from base station, is carried out the corresponding ePDCCH number of candidates of each polymerization grade in definite and obtained polymerization class set.
Wherein, described the first indication information can be contained in aforementioned for transmitting the rrc message of at least one polymerization class set, also can be contained in other signalings of base station transmission.
The specific implementation of which can, with reference to following preferred embodiment (not shown), not repeat them here.
It should be noted that, above-mentioned for example only for technical scheme of the present invention is described better, but not limitation of the present invention, those skilled in the art should understand that, any definite corresponding ePDCCH number of candidates of each polymerization grade, to carry out based on each polymerization grade and corresponding ePDCCH number of candidates thereof the implementation that DCI blind decoding operates, all should be within the scope of the present invention.
As one of preferred implementation, when base station adopts the information of subscriber equipment to determine at least one polymerization class set and ePDCCH number of candidates corresponding to wherein each polymerization grade, the first determining device 12 in subscriber equipment can be based on same information, by the processing mode identical with base station, determine ePDCCH number of candidates corresponding to each polymerization grade at least one polymerization class set that receiving system 11 receives.
For example, resource element (the RE that base station can be used according to subscriber equipment, the type of the residing subframe of information Resource Element) and subscriber equipment (subframe) is (as general cyclic prefix type, that is " normal CP ", or extended cyclic prefix type, that is " Extended CP ") etc. information, determine the adoptable polymerization class set of subscriber equipment Col1, and ePDCCH number of candidates corresponding to each polymerization grade in this set, then, when the receiving system 11 of subscriber equipment receives after this polymerization class set Col1 from base station, the first determining device 12 of this subscriber equipment is same based on self information of available RE and the type of residing subframe, determine in this set Col1 ePDCCH number of candidates corresponding to each polymerization grade in each set.
Preferably, according to the mode of above-described embodiment, the dispensing device 23 in base station only needs to send the rrc message by determined at least one the polymerization class set of the second determining device 21 to subscriber equipment.
One of according to a preferred embodiment of the invention, described the second determining device 21, generating apparatus 22 and the first determining device 21 are carried out respectively following operation.
Wherein, the second determining device 21 can also be determined the candidate indication information corresponding with at least one polymerization class set of the required monitoring of subscriber equipment.
Wherein, described candidate's indication information is for determining the ePDCCH number of candidates corresponding with each polymerization grade.Preferably, described candidate's indication information includes but not limited to following any form:
1) polymerization class set and the ePDCCH number of candidates corresponding with each polymerization grade in this polymerization class set.
2) polymerization class set and the first candidate rule of correspondence corresponding with this polymerization class set.
Described first candidate's rule of correspondence comprises all kinds of information that can be used for determining the corresponding relation between polymerization grade and ePDCCH number of candidates, and preferably, described first candidate's rule of correspondence includes but not limited to mapping table, mapping function etc.
Particularly, described the second determining device 21 determine the mode of the candidate indication informations corresponding with at least one polymerization class set of the required monitoring of subscriber equipment include but not limited to following any:
1) the second determining device 21, according to first candidate's rule of correspondence of default polymerization grade and ePDCCH number of candidates, is determined the ePDCCH number of candidates corresponding with each polymerization grade at least one polymerization class set, usings it as candidate's indication information.
For example, the second determining device 21 can be calculated according to the information such as polymerization grade, search volume and corresponding function, with the ePDCCH number of candidates of determining that polymerization grade is corresponding, usings it as candidate's indication information.
Again for example, the second determining device 21 is in the corresponding table that comprises each polymerization grade and the corresponding relation of ePDCCH number of candidates of base station pre-stored under self, select the ePDCCH number of candidates corresponding with each polymerization grade in determined at least one polymerization class set, using it as candidate's indication information.
2) the second determining device 21 is directly using first candidate's rule of correspondence of described polymerization grade and ePDCCH number of candidates as candidate's indication information.
It should be noted that, above-mentioned for example only for technical scheme of the present invention is described better, but not limitation of the present invention, those skilled in the art should understand that, any implementation of determining the candidate indication information corresponding with at least one polymerization class set of the required monitoring of subscriber equipment, all should be within the scope of the present invention.
Then, generating apparatus 22 generates the rrc message of the candidate's indication information that comprises described at least one polymerization class set and correspondence thereof.
Then the rrc message that, the receiving system in subscriber equipment 11 receives from base station.Wherein, in described rrc message, also comprise the candidate indication information corresponding with described at least one polymerization class set.
Then, the first determining device 12 is determined the corresponding ePDCCH number of candidates of each polymerization grade according to described candidate's indication information, to carry out the operation of DCI blind decoding based on each polymerization grade and corresponding ePDCCH number of candidates thereof.
Particularly, the first determining device 12 according to described candidate's indication information determine the mode of the corresponding ePDCCH number of candidates of each polymerization grade comprise following any:
1) when candidate's indication information comprises the ePDCCH number of candidates of polymerization grade and correspondence thereof, the first determining device 12 can directly be obtained ePDCCH number of candidates corresponding to each polymerization grade.
2) when candidate's indication information comprises first candidate's rule of correspondence, the first determining device 12 is carried out corresponding operation according to this first candidate rule of correspondence, to obtain the 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 is carried out this function and is calculated to obtain the ePDCCH number of candidates corresponding with each polymerization grade; Again for example, when first candidate's rule of correspondence is mapping table, the first determining device 12 is searched in this mapping table according to polymerization grade, to obtain the ePDCCH number of candidates corresponding with each polymerization grade etc.
It should be noted that, above-mentioned for example only for technical scheme of the present invention is described better, but not limitation of the present invention, those skilled in the art should understand that, anyly according to described candidate's indication information, determine the corresponding ePDCCH number of candidates of each polymerization grade, to carry out based on each polymerization grade and corresponding ePDCCH number of candidates thereof the implementation that DCI blind decoding operates, all should be within the scope of the present invention.
According to another preferred embodiment of the present invention, described rrc message also comprises the configuration information of a plurality of ePDCCHs groups corresponding with each polymerization class set difference.According to the method for the present embodiment, described the second determining device 21, generating apparatus 22 and the first determining device 12 are carried out respectively following operation.
The second determining device 21, according to the configuration information of polymerization rank correlation information and corresponding with subscriber equipment a plurality of ePDCCH groups, is determined each polymerization class set corresponding with the configuration information difference of described a plurality of ePDCCH groups.
Wherein, the ePDCCH group of described configuration information for determining that each ePDCCH is affiliated.Preferably, the number that described configuration information comprises the PRB that ePDCCH is used with and positional information.For example, the configuration information that subscriber equipment comprises two ePDCCH groups, the configuration information of an ePDCCH group is for comprising 4 PRB, and the configuration information of another ePDCCH group is for comprising 8 PRB.
Particularly, described the second determining device 21 can first be determined a plurality of polymerization class set according to polymerization rank correlation information, according to the configuration information of described a plurality of ePDCCH groups, determine the configuration information of each ePDCCH group and the corresponding relation of each polymerization class set again; Or the second determining device 21 can consider the configuration information of described polymerization rank correlation information and a plurality of ePDCCH group, to determine the configuration information of each ePDCCH group and the corresponding relation of each polymerization class set.
As one of preferred implementation, described the second determining device 21 also can further be determined second indication information corresponding with at least one polymerization class set of the required monitoring of subscriber equipment.
Wherein, described the second indication information is for determining ePDCCH number of candidates corresponding with each polymerization grade, that belong to predetermined ePDCCH group.Preferably, described the second indication information includes but not limited to following any form:
1) polymerization class set and ePDCCH number of candidates corresponding from each polymerization grade in this polymerization class set, that belong to respectively different ePDCCH group.
2) the second candidate rule of correspondence corresponding with polymerization class set.
Described second candidate's rule of correspondence comprises all kinds of information that can be used for determining the corresponding relation between the ePDCCH number of candidates that polymerization grade and each ePDCCH organize, and preferably, described second candidate's rule of correspondence includes but not limited to mapping table, mapping function etc.
Wherein, described the second indication information can be contained in aforementioned for transmitting the rrc message of at least one polymerization class set, also can be contained in other signalings of base station transmission.
Then, generating apparatus 22 generates and comprises the rrc message that the configuration information of organizing with institute and described a plurality of ePDCCH is distinguished corresponding a plurality of polymerization class set.
The first determining device 12 is to each polymerization class set, according to the configuration information of its corresponding ePDCCH group, ePDCCH number of candidates in definite wherein corresponding, described ePDCCH group of each polymerization grade, to carry out the operation of DCI blind decoding based on each polymerization grade and corresponding ePDCCH number of candidates thereof.
Particularly, the first determining device 12 is to each polymerization class set, according to the configuration information of its corresponding ePDCCH group, the mode of determining the ePDCCH number of candidates in corresponding, the described ePDCCH group of each polymerization grade wherein include but not limited to following any:
1) the first determining device 12, according to each default polymerization grade and the configuration information of ePDCCH group and the corresponding relation between ePDCCH number of candidates, is determined that each polymerization grade is corresponding, is had the ePDCCH number of candidates in described ePDCCH group.
2) the first determining device 12 is according to the second indication information from base station, determine and obtained polymerization class set in each polymerization grade corresponding, there is the ePDCCH number of candidates in described ePDCCH group.Described the second indication information is explained in the preferred implementation of aforementioned the second determining device 21, repeats no more.
Particularly, the first determining device 12 is according to the second indication information from base station, determine and obtained polymerization class set in each polymerization grade mode corresponding, that there is the ePDCCH number of candidates in described ePDCCH group include but not limited to following any:
A) when the second indication information comprise polymerization class set and corresponding from each polymerization grade in this polymerization class set, while belonging to respectively the ePDCCH number of candidates of different ePDCCH group, subscriber equipment can directly obtain ePDCCH number of candidates corresponding to each polymerization grade.
B), when the second indication information comprises second candidate's rule of correspondence, according to this second candidate rule of correspondence, carry out corresponding operation, to obtain the ePDCCH number of candidates corresponding with each polymerization grade.
Wherein, described second candidate's rule of correspondence is explained in the preferred implementation of aforementioned the second determining device 21, repeats no more.
For example, when second candidate's rule of correspondence is mapping function, carries out this function and calculate to obtain ePDCCH number of candidates corresponding with each polymerization grade, different e PDCCH group; Again for example, when second candidate's rule of correspondence is mapping table, according to polymerization grade, in this mapping table, search for, to obtain ePDCCH number of candidates corresponding with each polymerization grade, different e PDCCH group etc.
It should be noted that, above-mentioned for example only for technical scheme of the present invention is described better, but not limitation of the present invention, those skilled in the art should understand that, any to each polymerization class set, according to the configuration information of its corresponding ePDCCH group, ePDCCH number of candidates in definite wherein corresponding, described ePDCCH group of each polymerization grade, to carry out based on each polymerization grade and corresponding ePDCCH number of candidates thereof the implementation that DCI blind decoding operates, all should be within the scope of the present invention.
According to the solution of the present invention, by being the information of the polymerization class set of its required monitoring of user device configuration by base station, reduced the polymerization grade of the required monitoring of subscriber equipment, thereby reduced the blind decoding operation of the required execution of subscriber equipment, reduced the complexity of distributing the operation of ePDCCH number of candidates, and improved efficiency, and, can configure respectively with each and organize corresponding polymerization class set the subscriber equipment of many groups ePDCCH, make subscriber equipment only need to monitor its corresponding polymerization class set to each ePDCCH group, further reduced the polymerization grade of required monitoring, reduced the degree of difficulty that distributes ePDCCH candidate operations.
Software program of the present invention can carry out to realize step mentioned above or function by processor.Similarly, software program of the present invention (comprising relevant data structure) can be stored in computer readable recording medium storing program for performing, for example, and RAM memory, magnetic or CD-ROM driver or floppy disc and similar devices.In addition, steps more of the present invention or function can adopt hardware to realize, for example, thereby as coordinate the circuit of carrying out each function or step with processor.
In addition, a part of the present invention can be applied to computer program, and for example computer program instructions, when it is carried out by computer, by the operation of this computer, can call or provide the method according to this invention and/or technical scheme.And call the program command of method of the present invention, may be stored in fixing or movably in recording medium, and/or be transmitted by the data flow in broadcast or other signal bearing medias, and/or be stored in according in the working storage of the computer equipment of described program command operation.At this, comprise according to one embodiment of present invention a device, this device comprises for storing the memory of computer program instructions and for the processor of execution of program instructions, wherein, when this computer program instructions is carried out by this processor, trigger this device and move based on aforementioned according to the method for a plurality of embodiment of the present invention and/or technical scheme.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and in the situation that not deviating from spirit of the present invention or essential characteristic, can realize the present invention with other concrete form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present invention is limited by claims rather than above-mentioned explanation, is therefore intended to be included in the present invention dropping on the implication that is equal to important document of claim and all changes in scope.Any Reference numeral in claim should be considered as limiting related claim.In addition, obviously other unit or step do not got rid of in " comprising " word, and odd number is not got rid of plural number.A plurality of unit of stating in system claim or device also can be realized by software or hardware by a unit or device.The first, the second word such as grade is used for representing title, and does not represent any specific order.
Claims (15)
1. in subscriber equipment, obtain a method for ePDCCH relevant configuration, wherein, said method comprising the steps of:
A receives the rrc message from base station, and wherein, described rrc message comprises at least one polymerization class set;
B determines the corresponding ePDCCH number of candidates of each polymerization grade, to carry out the operation of DCI blind decoding based on each polymerization grade and corresponding ePDCCH number of candidates thereof.
2. method according to claim 1, wherein, also comprise the candidate indication information corresponding with described at least one polymerization class set in described rrc message, described candidate's indication information is for determining the ePDCCH candidate's corresponding with each polymerization grade quantity, wherein, described step b comprises:
-according to described candidate's indication information, determine the corresponding ePDCCH number of candidates of each polymerization grade, to carry out the operation of DCI blind decoding based on each polymerization grade and corresponding ePDCCH number of candidates thereof.
3. method according to claim 1 and 2, wherein, described rrc message also comprises and each polymerization class set configuration information that corresponding a plurality of ePDCCH organize respectively, wherein, described step b comprises the following steps:
-to each polymerization class set, according to the configuration information of its corresponding ePDCCH group, ePDCCH number of candidates in definite wherein corresponding, described ePDCCH group of each polymerization grade, to carry out the operation of DCI blind decoding based on each polymerization grade and corresponding ePDCCH number of candidates thereof.
4. in base station, realize for subscriber equipment carries out the method for ePDCCH relevant configuration, wherein, said method comprising the steps of:
A, according to polymerization rank correlation information, determines at least one polymerization class set of the required monitoring of subscriber equipment;
B generates the rrc message that comprises described at least one polymerization class set;
C sends described rrc message to described subscriber equipment.
5. method according to claim 4, wherein, described steps A is further comprising the steps of:
-definite candidate indication information corresponding with at least one polymerization class set of the required monitoring of subscriber equipment;
Wherein, described step B comprises the following steps:
The rrc message of candidate's indication information that-generation comprises described at least one polymerization class set and correspondence thereof.
6. according to the method described in claim 4 or 5, wherein, described steps A comprises the following steps:
-according to the configuration information of polymerization rank correlation information and corresponding with subscriber equipment a plurality of ePDCCH groups, determine a plurality of polymerization class set corresponding with the configuration information difference of described a plurality of ePDCCH groups;
Wherein, described step B comprises the following steps:
-generate and to comprise the rrc message that the configuration information of organizing with institute and described a plurality of ePDCCH is distinguished corresponding a plurality of polymerization class set.
7. according to the method described in any one in claim 4 to 6, wherein, described polymerization rank correlation information comprises following at least any one information:
The channel related information of-subscriber equipment channel of living in;
The disposal ability information of-subscriber equipment;
The interfere information of-one or more communities adjacent with described base station;
The dispatched resource information of-described base station;
The resource utilization information of-described base station.
8. in subscriber equipment, obtain a configuration acquisition device for ePDCCH relevant configuration, wherein, described inking device comprises:
Receiving system, for receiving the rrc message from base station, wherein, described rrc message comprises at least one polymerization class set;
The first determining device, for determining the corresponding ePDCCH number of candidates of each polymerization grade, to carry out the operation of DCI blind decoding based on each polymerization grade and corresponding ePDCCH number of candidates thereof.
9. configuration acquisition device according to claim 8, wherein, in described rrc message, also comprise the candidate indication information corresponding with described at least one polymerization class set, described candidate's indication information is for determining the ePDCCH candidate's corresponding with each polymerization grade quantity, wherein, described the first determining device is for determining the corresponding ePDCCH number of candidates of each polymerization grade according to described candidate's indication information, to carry out the operation of DCI blind decoding based on each polymerization grade and corresponding ePDCCH number of candidates thereof.
10. configuration acquisition device according to claim 8 or claim 9, wherein, described rrc message also comprises the configuration information of a plurality of ePDCCHs groups corresponding with each polymerization class set difference, wherein, described the first determining device is used for each polymerization class set, according to the configuration information of its corresponding ePDCCH group, ePDCCH number of candidates in definite wherein corresponding, the described candidate ePDCCH of each polymerization grade group, to carry out the operation of DCI blind decoding based on each polymerization grade and corresponding ePDCCH number of candidates thereof.
11. 1 kinds of base stations that are used to subscriber equipment to carry out ePDCCH relevant configuration, wherein, described base station comprises:
The second determining device, for according to polymerization rank correlation information, determines at least one polymerization class set of the required monitoring of subscriber equipment;
Generating apparatus, for generating the rrc message that comprises described at least one polymerization class set;
Dispensing device, for sending described rrc message to described subscriber equipment.
12. base stations according to claim 11, wherein, described the second determining device is also for determining at least one polymerization class set and corresponding candidate's indication information thereof of the required monitoring of subscriber equipment;
Described generating apparatus is for generating the rrc message of the candidate's indication information that comprises described at least one polymerization class set and correspondence thereof.
13. according to the base station described in claim 11 or 12, wherein, described the second determining device, for according to the configuration information of polymerization rank correlation information and corresponding with subscriber equipment a plurality of ePDCCH groups, is determined each polymerization class set corresponding with the configuration information difference of described a plurality of ePDCCH groups;
Described generating apparatus comprises for generating the rrc message that the configuration information of organizing with institute and described a plurality of ePDCCH is distinguished corresponding a plurality of polymerization class set.
14. according to claim 11 to the base station described in any one in 13, and wherein, described polymerization rank correlation information comprises following at least any one information:
The channel related information of-subscriber equipment channel of living in;
The disposal ability information of-subscriber equipment;
The interfere information of-one or more communities adjacent with described base station;
The dispatched resource information of-described base station;
The resource utilization information of-described base station.
15. 1 kinds of communication systems, wherein, described communication system comprises the subscriber equipment that comprises in to 10 the configuration acquisition device described in any one at least according to Claim 8, and according to claim 11 to the base station described in any one at least in 14.
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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. |