CN101699901B - Method and device for optimizing search space of user equipment - Google Patents
Method and device for optimizing search space of user equipment Download PDFInfo
- Publication number
- CN101699901B CN101699901B CN2009101968860A CN200910196886A CN101699901B CN 101699901 B CN101699901 B CN 101699901B CN 2009101968860 A CN2009101968860 A CN 2009101968860A CN 200910196886 A CN200910196886 A CN 200910196886A CN 101699901 B CN101699901 B CN 101699901B
- Authority
- CN
- China
- Prior art keywords
- candidate set
- pdcch
- pdcch candidate
- set number
- search
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The embodiment of the invention discloses a method for optimizing the search space of user equipment, which comprises the following steps: receiving the search capability information of a physical downlink control channel (PDCCH) of the user equipment (UE), which is reported by the UE; based on the search capability information of the PDCCH, which is reported by the UE, determining the number of candidate sets of the PDCCH of the UE, which needs to be detected; and according to the number of the candidate sets of the PDCCH, calculating the search space of the UE. The embodiment of the invention also provides a corresponding device for optimizing the search space of the UE, and user terminal equipment. The scheme provided by the embodiment of the invention can increase the success ratio of resource allocation of the PDCCH and increase the search efficiency of the UE, thereby increasing the resource utilization ratio of the PDCCH and being beneficial to power saving of the UE.
Description
Technical field
The present invention relates to the mobile communication technology field, be specifically related to the optimization method and the device in user equipment searches space.
Background technology
Long Term Evolution (LTE; Long Term Evolution) project is the evolution items of 3G; Improve and strengthened the aerial access technology of 3G; OFDM (OFDM, Orthogonal FrequencyDivision Multiplexing) is the major technology characteristics of LTE on physical layer with the combination of multiple-input, multiple-output (MIMO, Multiple Input MultipleOutput).
The down physical channel of LTE includes Physical Downlink Shared Channel (PDSCH; PhysicalDownlink Shared Channel) and Physical Downlink Control Channel (PDCCH; PhysicalDownlink Control Channel) etc.; Wherein Physical Downlink Shared Channel PDSCH is used to transmit shared data, this part data be subscriber equipment (UE) final the data that will obtain; Physical downlink control channel PDCCH then is used for transmitting uplink scheduling distribution and other control informations and descending scheduling and distributes and other control informations.That is to say that UE wants to obtain the shared data on the PDSCH, at first must obtain the schedule information on its corresponding PDCCH.
PDCCH is a unit of transfer with the set that one or more control channels unit (CCE, Control Channel Element) constituted, and usually, a PDCCH can be by 1,2, and 4 or 8 CCE constitute.
In the prior art, in each descending sub frame, can once transmit the PDCCH of a plurality of UE; UE needs the transmission mode according to oneself; In corresponding search volume, remove to resolve all CCE, promptly carry out blind Detecting, thereby find whether to have the control information that sends to oneself.
UE need search for according to certain rule in certain areal extent when himself PDCCH of blind Detecting, and the scope of this search promptly is defined as the search volume.The search volume is divided into two big types, promptly the space size be fixed as 16CCE common search space and space size according to different polymerization ranks and the different proprietary search volume of UE.Wherein 4CCE and two kinds of other PDCCH of polymer grade of 8CCE are only supported in the common search space, are the PDCCH space of 16 CCE for the search volume size promptly, and two kinds of polymerization ranks of 4CCE or 8CCE are arranged; Its corresponding Candidate Set is respectively 4 (0-3,4-7,8-11; 12-15) with 2 (0-7,8-15); And the proprietary search volume of UE can support that the polymerization rank is 1,2,4, the polymerization methods of 8 CCE, and its space size and Candidate Set number are also different according to other difference of polymer grade, see table 1 for details.
Table 1
In the above table, under certain polymerization rank,, can determine another one as long as confirm any one that the search volume is big or small or the PDCCH Candidate Set is central.If promptly known polymerization rank and search volume size can obtain corresponding PDCCH Candidate Set number; Otherwise, if known polymerization rank and PDCCH Candidate Set number can obtain corresponding search volume size equally.
During blind Detecting, UE can carry out the retrieval of search volume according to tree structure, so that find whether to have the PDCCH resource that is handed down to oneself.For the proprietary search volume of UE, UE can carry out blind Detecting according to each polymerization rank successively, and up to the PDCCH resource that detects this UE, UE just can stop the blind Detecting to its proprietary search volume, otherwise, detect failure.For the common search space, same, UE needs to carry out blind Detecting according to each polymerization rank successively, to confirm in the common search space, whether to have the PDCCH resource of this UE.No matter whether UE has detected the PDCCH resource of oneself in proprietary search volume, UE must go to detect the common search space.
When theme of the present invention is studied; The inventor finds that the disposal ability of each UE is different in the real system; The search volume size that the UE that disposal ability is different can detect in the regular hour is different; May cause the search volume resource of some UE to be occupied thus, thereby cause the PDCCH resource allocation failure of this UE by other UE.When offered load is big, can't be assigned to the CCE resource for those because resource overlaps, and the stronger UE of self-ability owing to the search volume resource limit is distributed less than resource, makes the PDCCH resource for being fully used especially.
Summary of the invention
The embodiment of the invention provides the optimization method and the device in a kind of user equipment searches space, improves the PDCCH resource utilization thereby can improve the UE search efficiency.
The optimization method in a kind of user equipment searches space that the embodiment of the invention provides comprises:
Receive the physical downlink control channel PDCCH search capability information of this UE of reported by user equipment UE;
The PDCCH search capability information that reports based on said UE is confirmed the PDCCH Candidate Set number of the required detection of said UE, and calculates the search volume of said UE according to this PDCCH Candidate Set number.
A kind of device of optimizing the user equipment searches space that the embodiment of the invention provides comprises:
UE ability acquiring unit is used to obtain the physical downlink control channel PDCCH search capability information of user equipment (UE);
The unit is confirmed in the search volume, confirms the PDCCH Candidate Set number of the required detection of said UE based on the PDCCH search capability information of being obtained, and calculates the search volume of said UE.
A kind of subscriber terminal equipment that the embodiment of the invention provides comprises:
The search volume computing unit is confirmed PDCCH Candidate Set number according to the PDCCH search capability of subscriber terminal equipment, and calculates corresponding search volume based on this PDCCH Candidate Set number;
Search unit is used for carrying out blind Detecting in the search volume that is calculated.
In sum; In the technical scheme that the embodiment of the invention provides; Network side obtains the physical downlink control channel PDCCH search capability information of user equipment (UE), and with reference to this ability information, confirms the PDCCH Candidate Set number of the actual required detection of UE; And the search volume of calculating UE according to the Candidate Set number of confirming, and then on this search volume, be this UE distribution PDCCH resource.Wherein network side is in the PDCCH Candidate Set number of confirming the actual required detection of UE, and the pairing Candidate Set number of ability information that can directly UE be reported is made as the PDCCH Candidate Set number of the final required detection of UE; The ability information and the current loading condition of network side that also can combine UE to report carry out further confirming.If network side has done further to confirm that the Candidate Set number after it also needs to confirm is given UE through signaling to the PDCCH Candidate Set number of the actual required detection of UE.
The UE side is perhaps according to the pairing Candidate Set number of PDCCH search capability information that self reported, and the Candidate Set number that perhaps issues according to the network side that receives calculates its corresponding search volume, and carries out blind Detecting.The scheme that embodiments of the invention provided can improve PDCCH resource allocation success rate, improves the PDCCH resource utilization thereby improve the UE search efficiency, and helps the UE power saving.
Description of drawings
The optimization method flow chart of the search volume that Fig. 1 provides for the embodiment of the invention one;
The optimization method flow chart of the search volume that Fig. 2 provides for the embodiment of the invention two;
The optimization method flow chart of the search volume that Fig. 3 provides for the embodiment of the invention three;
The optimization method flow chart of the search volume that Fig. 4 provides for the embodiment of the invention four;
The optimization method flow chart of the search volume that Fig. 5 provides for the embodiment of the invention five;
The optimization method flow chart of the search volume that Fig. 6 provides for the embodiment of the invention six;
The device sketch map in the optimization user equipment searches space that Fig. 7 provides for the embodiment of the invention;
The subscriber terminal equipment sketch map that Fig. 8 provides for the embodiment of the invention.
Embodiment
The not high problem of control channel resource (CCE) utilization ratio to the prior art existence; The embodiment of the invention provides the method for optimizing the user equipment searches space; Confirm the search volume size of UE based on the disposal ability of user equipment (UE) in the real system; Strong to ability in same subframe, processing speed is UE faster, is that it distributes bigger search volume, and, processing speed slower UE weak to ability; For it distributes less search volume, thereby promote the utilization ratio of control channel resource (CCE).In embodiments of the present invention; Be embodied as according to the ability of UE and confirm every kind of number that converges the Candidate Set of PDCCH under the grade; For example strong UE to ability; It is bigger that it can an obtainable PDCCH Candidate Set numerical value in a sub-frame, and the UE more weak to ability, it possibly obtain less PDCCH Candidate Set number.
For making principle of the present invention, characteristic and advantage clearer, describe the present invention below in conjunction with specific embodiment.
Embodiment one
With reference to Fig. 1, the optimization method of a kind of subscriber equipment (UE) search volume that present embodiment provides comprises:
S101, the physical downlink control channel PDCCH search capability information of this UE that network side to receive user equipment UE reports;
S102 confirms the PDCCH Candidate Set number M of the current required detection of said UE based on the PDCCH search capability information that is reported
(L), and calculate the search volume S of said UE
k (L)
S103 distributes control corresponding channel resource (control channel unit CCE) for said UE from the search volume that calculates.
In the technical scheme that present embodiment provides, network side obtains the PDCCH search capability information of user equipment (UE), and confirms the PDCCH Candidate Set number that said UE need detect based on the search capability of this UE, and calculates the search volume of said UE; From the search volume that calculates, distribute the control corresponding channel resource for said UE.Can improve PDCCH resource allocation success rate like this, improve the UE search efficiency and help the UE power saving.
Embodiment two
The optimization method in a kind of user equipment searches space that present embodiment provides comprises:
S201, network side issue UE ability apply for information (UECapabilityEnquiry);
The wireless access capability information that need obtain the UE that is under the RRC connected state when network side triggers the flow process of UE transmitting capacity information when (comprising the PDCCH search capability).In order to obtain UE ability information (like the number of the maximum PDCCH Candidate Set that can search for of, UE), concrete through the transmission apply for information to said UE, indicate UE to report its PDCCH search capability information.
S202, user equipment (UE) report the physical downlink control channel PDCCH search capability information of this UE to network side;
UE is put the number of the own maximum PDCCH Candidate Set that can search for to UE ability wireless access technology container (ueCapabilityRAT-Container), reports network side;
S203, network side is the maximum PDCCH Candidate Set number that can search for according to UE reported, confirm this UE current actual can be in each subframe the number M of the PDCCH Candidate Set of required blind Detecting
(L), and according to M
(L)Calculate corresponding search volume resource, and on the search volume resource that calculates, distribute corresponding PDCCH control channel resource CCE for this UE;
Particularly, can combine current network load condition to choose based on the PDCCH search capability that said UE reports, confirm the PDCCH Candidate Set number of the current required detection of said UE.In another embodiment, when offered load hour because little when the relative load of the conflicting probability in search volume is big between the UE, at this moment, can be in the limit of power of UE be the PDCCH collection numerical value M of this UE distribution
(L)Smaller, i.e. M
(L)The maximum PDCCH Candidate Set number that can search for of≤UE so that can when distributing to this UE PDCCH resource, reduce the blind Detecting number of times of UE, improves search efficiency and helps the UE purpose of power saving thereby reach; In another embodiment, when offered load is big, just need to consider in the limit of power of UE, to distribute bigger PDCCH collection number M for this UE
(L), so that can improve the resource allocation success rate to a certain extent.
S204, network side is with the PDCCH Candidate Set number M of configuration
(L)Send to said UE;
Particularly, network side is through the PDCCH Candidate Set number M of control signaling with configuration
(L)The value notice is given UE.
S205, UE is according to received M
(L)Calculate its corresponding search volume, and calculate it the search volume carry out blind Detecting.
Calculate M according to PDCCH Candidate Set number
(L)Calculate the search volume S of corresponding UE
k (L)Formula can for:
Wherein { 1,2,4,8} is the polymerization rank to L ∈; I=0 ..., L-1; M=0 ..., M
(L)-1, M wherein
(L)Be the PDCCH Candidate Set; N
CCE, kTotal CCE number for control domain among the subframe k;
Y wherein
-1=n
RNTI≠ 0, A=39827, D=65537,
n
sBe a timeslot number in the radio frames, n
s∈ 0,1 ..., 19}, n
RNTIC-RNTI value for respective user.
In order more to be expressly understood definite process of this search volume, illustrate below:
Suppose: corresponding L=1,2,4,8 corresponding M
(L)Being respectively 6,6,2,2 (is the corresponding M of L=1
(L)=6, the corresponding M of L=2
(L)=6, the corresponding M of L=4
(L)=2, the corresponding M of L=8
(L)=2); n
RNTI=1;
N
CCE, k=50; Then calculate respectively:
The polymerization rank is 1 o'clock, promptly during L=1, and i=0, m=0 ..., M
(L)-1=0,1,2,3,4,5, to the proprietary search volume of UE, Y
k=Y
0=(A.Y
-1) modD=(39827*1) mod65537=39827, then by
The physical meaning of above-mentioned each parameter can be regarded as: the Candidate Set number M
(L)Value can be regarded as the group number (every group of needs detect once, so it can be regarded as the number of times that needs detection again) that need be divided in all resources that calculate; M representes the numbering of concrete each group; I is the numbering of each element in the middle of each group.So it is 1CCE that 6 values calculating in the example are the polymerization rank, C-RNTI is 1 user, total CCE number that it need detect, and its numbering is respectively 27,28,29,30,31,32, and these 6 resources are divided into 6 groups of (M
(L)Value), have only an element in the middle of every group, therefore, corresponding m=0,1,2,3,4,5 resource number is respectively { 27}, { 28}, { 29}, { 30}, { 31}, { 32}.
In like manner during L=2, i=0,1, m=0 ..., M
(L)-1=0,1,2,3,4,5, to the proprietary search volume of UE, Y
k=Y
0=(AY
-1) modD=(39827*1) mod65537=39827, then by
With aforesaid explanation, above-mentioned 12 values that draw are: for the polymerization rank is that the C-RNTI of 2CCE is 1 user, and its resource number that need detect is: 4,5 ..., 15, need to detect the combination of 6 2CCE altogether; Be respectively 4,5}, and 6,7}, 8,9}; 10,11}, 12,13}, 14,15}.
Situation when L=3 and L=4 is analogized.
Afterwards, calculate it the search volume carry out blind Detecting, to find whether to exist resource assignation or other control informations that sends to oneself.
In the process of carrying out blind Detecting, can detect the control channel unit CCE in the said space according to corresponding tree structure.
In the technical scheme that present embodiment provides; Network side obtains the physical downlink control channel PDCCH search capability information of user equipment (UE); And the PDCCH Candidate Set number of confirming the current required detection of said UE based on search capability and the current loading condition of network of this UE, and calculate the search volume of said UE; From the search volume that calculates, distribute the control corresponding channel resource for said UE.Can improve PDCCH resource allocation success rate, improve the UE search efficiency and help the UE power saving.
Embodiment three
The difference of present embodiment and embodiment two is that network side does not need the PDCCH Candidate Set number M with configuration
(L)Notify said UE, UE is according to the ability of self, confirms the own maximum PDCCH Candidate Set number N that can detect, and according to its corresponding search volume of this PDCCH Candidate Set number N calculating, and calculate it the search volume carry out blind Detecting.
With reference to Fig. 3, the optimization method in a kind of user equipment searches space that present embodiment provides comprises:
Step S301-S302, basic identical with the S201-S202 among the embodiment two, no longer repeat at this;
The PDCCH Candidate Set number that S303, network side directly report up with UE is calculated the search volume of UE, and computational methods are with step S205, and is its distribution PDCCH resource;
S304, UE confirms the own maximum PDCCH Candidate Set number that can detect according to the ability of self, and calculates its corresponding search volume, and carries out blind Detecting.
Specifically, can adopt the method that is similar among the step S205 to calculate corresponding search volume based on the PDCCH Candidate Set number that UE reported;
Afterwards, carry out blind Detecting, to find whether to exist resource assignation or other control informations that sends to oneself in the search volume that is calculated.
In the process of carrying out blind Detecting, can detect the control channel unit CCE in the said space according to corresponding tree structure.
In the technical scheme that present embodiment provides, UE confirms the own maximum PDCCH Candidate Set number N that can detect based on the ability of self, and calculates its corresponding search volume according to this PDCCH Candidate Set number N; From the search volume that calculates, distribute the control corresponding channel resource for said UE.Can improve the UE search efficiency and help the UE power saving.
Embodiment four
In the present embodiment, the ability with UE is divided into different grade in advance, and each ability rating of UE is corresponded respectively to corresponding PDCCH Candidate Set number.UE preserves each ability rating and its PDCCH Candidate Set number corresponding relation, perhaps is handed down to UE by network side through broadcast before this corresponding relation.
UE reports network side with own affiliated grade, and the grade that network side reports up according to UE is again carried out the distribution of UE search volume, and gives UE with its notice.
With reference to Fig. 4, the optimization method in a kind of user equipment searches space that present embodiment provides comprises:
S401, network side issue UE ability apply for information (UECapabilityEnquiry);
In order to obtain the UE ability information, comprise the number of the maximum PDCCH Candidate Set that can search for of UE, need to send apply for information request UE and report this ability information.
S402, user equipment (UE) report grade under the physical downlink control channel PDCCH search capability of this UE to network side;
UE is put own affiliated PDCCH search capability grade to UE ability wireless access technology container (ueCapabilityRAT-Container), and reports network side;
S403; Network side is according to PDCCH search capability grade that UE reported; Confirm the PDCCH Candidate Set number that the current reality of this UE can detect; And calculate corresponding search volume, and on the search volume resource that calculates, distribute corresponding PDCCH control channel resource CCE for this UE according to this PDCCH Candidate Set number;
Particularly, can combine current network load condition to choose based on the PDCCH Candidate Set number of confirming.When offered load hour because little when the relative load of the conflicting probability in search volume is big between the UE, at this moment, can in the limit of power of UE, (be M
(L)The maximum PDCCH Candidate Set number that can search for of≤UE) distributes less PDCCH Candidate Set M for this UE
(L),, improve search efficiency and help the UE purpose of power saving thereby reach so that can when distributing to this UE PDCCH resource, reduce the blind Detecting number of times of UE; On the contrary, when offered load is big, just need be thought of as in the limit of power of UE and distributes bigger PDCCH Candidate Set number M for this UE
(L), so that can improve the resource allocation success rate to a certain extent.
S404, network side is with the PDCCH Candidate Set number M of configuration
(L)Send to said UE;
Particularly, network side eNB is through the PDCCH Candidate Set number M of control signaling with configuration
(L)The value notice is given UE.
S405, UE is according to received M
(L)Calculate its corresponding search volume, and carry out blind Detecting in the search volume that is calculated.
Specifically can adopt the method that is similar among the step S205 to calculate corresponding search volume;
Afterwards, carry out blind Detecting, to find whether to exist resource assignation or other control informations that sends to oneself in the search volume that is calculated.
In the process of carrying out blind Detecting, can detect the control channel unit CCE in the said space according to corresponding tree structure.
In the technical scheme that present embodiment provides, the ability rating that network side reports according to UE is confirmed the number M of the corresponding PDCCH Candidate Set of the required detection of current UE
(L), and according to M
(L)Value calculates the search volume of this UE, and on the search volume that calculates, distributes corresponding CCE resource for it.Can improve PDCCH resource allocation success rate, improve the UE search efficiency and help the UE power saving.
Embodiment five
The difference of present embodiment and embodiment four is, the pairing Candidate Set number of ability rating that network side directly reports with UE is as the PDCCH Candidate Set number M of the required detection of UE
(L), and carry out the calculating of UE search volume according to this value, and then be that this UE distributes the PDCCH resource.Therefore network side does not need the PDCCH Candidate Set number M with configuration
(L)Reinform to said UE, UE directly confirms the own PDCCH Candidate Set number N that detects of needing according to grade under the ability of self, and according to its corresponding search volume of this PDCCH Candidate Set number N calculating, and calculate it the search volume carry out blind Detecting.
With reference to Fig. 5, the optimization method in a kind of user equipment searches space that present embodiment provides comprises:
Step S501-S502, basic identical with the S401-S402 among the embodiment four, no longer repeat at this;
The pairing Candidate Set number of ability rating that S503, network side directly report with UE is as the PDCCH Candidate Set number M of the required detection of UE
(L), and carry out the calculating of UE search volume according to this value, and then be that this UE distributes the PDCCH resource;
S504, (the N value of this moment is the M of network side according to the definite PDCCH Candidate Set number N that oneself need detect of grade under the ability of self
(L)Value), and calculate its corresponding search volume according to this PDCCH Candidate Set number N, and calculate it the search volume carry out blind Detecting.
Based on each ability rating and its PDCCH Candidate Set number corresponding relation divided in advance, UE confirms that according to grade under the ability of self oneself needs the PDCCH Candidate Set number N of detection;
Specifically can adopt the method that is similar among the step S205 to calculate corresponding search volume;
Afterwards, calculate it the search volume carry out blind Detecting, to find whether to exist resource assignation or other control informations that sends to oneself.
In the process of carrying out blind Detecting, can detect the control channel unit CCE in the said space according to corresponding tree structure.
Embodiment six
In the present embodiment; With existing every kind search channel Candidate Set number that converges UE under the grade is benchmark; The UE ability information that reports network side is the multiple value that converges the corresponding search channel collection number under the grade, respectively converges the search channel Candidate Set number of UE under the grade, and is as shown in table 1.The multiple value that network side reports according to UE is calculated actual Candidate Set number and corresponding search volume resource, and on determined search volume, distributes corresponding C CE resource for it.
With reference to Fig. 6, the optimization method in a kind of user equipment searches space that present embodiment provides comprises:
S601, network side issue UE ability apply for information (UECapabilityEnquiry);
In order to obtain the UE ability information, comprise the number of the maximum PDCCH Candidate Set that can search for of UE, need to send apply for information request UE and report this ability information.
S602, the PDCCH search capability that user equipment (UE) reports this UE to have to network side is the corresponding multiple value that converges PDCCH Candidate Set number under the grade;
In UE ability wireless access technology container (ueCapabilityRAT-Container), comprise the multiple value that converges the corresponding search channel Candidate Set number under the grade, and report network side;
S603, network side confirm the number M of the PDCCH Candidate Set that this UE can detect according to the multiple value of the corresponding search channel Candidate Set number that converges grade that UE reported
(L), and according to M
(L)Calculate corresponding search volume, and on the search volume resource that calculates, distribute corresponding PDCCH control channel resource CCE for this UE;
S604, UE calculates its corresponding search volume according to the multiple value of the PDCCH Candidate Set number that self can search for, and calculate it the search volume carry out blind Detecting.
Specifically can adopt the method that is similar among the step S205 to calculate corresponding search volume;
Afterwards, carry out blind Detecting, to find whether to exist resource assignation or other control informations that sends to oneself in the search volume that is calculated.
In the process of carrying out blind Detecting, can detect the control channel unit CCE in the said space according to corresponding tree structure.
In the present embodiment; Can also existing every kind of search volume size that converges UE under the grade be benchmark; The UE ability information that reports network side is set to respectively converge the multiple value of the corresponding search volume size under the grade, respectively converges the search volume size of UE under the grade, and is as shown in table 1.Network side calculates corresponding search volume size according to the multiple value that UE reports, and then obtains Candidate Set number and corresponding search volume resource, and on determined search volume, distributes corresponding C CE resource for it.The idiographic flow that the search volume is distributed is basic identical, repeats no more at this.
With reference to Fig. 7, the embodiment of the invention also provides a kind of device 700 of optimizing the user equipment searches space, comprising:
UE ability information acquiring unit 710 is used to obtain the physical downlink control channel PDCCH search capability information of user equipment (UE);
PDCCH Candidate Set determination module 721 is based on the PDCCH search capability information that said UE reports, the PDCCH Candidate Set number of in the maximum PDCCH Candidate Set number limit that can detect of said UE, selecting the UE actual needs to detect.
Particularly, PDCCH Candidate Set determination module 721 can combine current network load condition to choose based on the PDCCH search capability that said UE reports, confirm the PDCCH Candidate Set number of the current required detection of said UE.In another embodiment, when offered load hour because little when the relative load of the conflicting probability in search volume is big between the UE, at this moment, can be in the limit of power of UE be the PDCCH collection numerical value M of this UE distribution
(L)Smaller, promptly
M
(L)The maximum PDCCH Candidate Set number that can search for of≤UE
So that can when distributing to this UE PDCCH resource, reduce the blind Detecting number of times of UE, improve search efficiency and help the UE purpose of power saving thereby reach; In addition, when offered load is big, just need to consider in the limit of power of UE, to distribute bigger PDCCH collection number M for this UE
(L), so that can improve the resource allocation success rate to a certain extent.
Search volume computing module 722 calculates the search volume of said UE according to this PDCCH Candidate Set number.
The device 700 that this optimizes the user equipment searches space also comprises:
From the search volume that calculates, select the control channel resource, and distribute said UE.
With reference to Fig. 8, the embodiment of the invention also provides a kind of subscriber terminal equipment 800, comprising:
Search volume computing unit 810 is confirmed PDCCH Candidate Set number according to the PDCCH search capability of subscriber terminal equipment, and calculates corresponding search volume based on this PDCCH Candidate Set number;
The method of search volume computing unit 810 calculating search volumes specifically can adopt the method or the additive method of the calculating search volume of describing like step S205 in the preceding method, repeats no more at this.
In sum; In the technical scheme that the embodiment of the invention provides; Network side obtains the physical downlink control channel PDCCH search capability information of user equipment (UE); And or directly confirm the PDCCH Candidate Set number of the current required detection of said UE based on search capability or the further current loading condition of network that combines of this UE, and calculate the search volume of said UE; From the search volume that calculates, distribute the control corresponding channel resource for said UE.When network side has combined current loading condition the PDCCH Candidate Set number of the required detection of UE has been carried out judgement, it also should be handed down to UE with the Candidate Set number after the judgement.The UE side is perhaps calculated corresponding search volume according to the pairing Candidate Set number of the ability information of self or according to the Candidate Set number that network side issues, and carries out blind Detecting.Can improve PDCCH resource allocation success rate, improve the PDCCH resource utilization thereby improve the UE search efficiency, and help the UE power saving.
Obviously, it is apparent to those skilled in the art that each unit or each step in the above-mentioned embodiment of the invention can realize with the general calculation device; They can concentrate on the single calculation element; Perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element; Thereby; Can they be stored in the storage device and carry out, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of unit in them or step are made into the single integrated circuit module and realize by calculation element.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is merely exemplary embodiment of the present invention, is not to be used to limit protection scope of the present invention.All any modifications of within spirit of the present invention and principle, being done, be equal to replacement, improvement etc., all be included in protection scope of the present invention.
Claims (12)
1. the optimization method in a user equipment searches space is characterized in that, comprising:
Receive the physical downlink control channel PDCCH search capability information of this UE of reported by user equipment UE;
The PDCCH search capability information that reports based on said UE is confirmed the PDCCH Candidate Set number of the required detection of said UE, and calculates the search volume of said UE according to this PDCCH Candidate Set number;
From the search volume that calculates, distribute the control channel resource for said UE.
2. the method for claim 1 is characterized in that, said physical downlink control channel PDCCH search capability information is the maximum PDCCH Candidate Set number that can detect of said UE;
The said PDCCH Candidate Set quantity of confirming the current required detection of said UE specifically comprises:
The PDCCH Candidate Set number of in the maximum PDCCH Candidate Set number limit that can detect of said UE, selecting the UE actual needs to detect.
3. the method for claim 1 is characterized in that, said physical downlink control channel PDCCH search capability information is the PDCCH search capability grade under the said UE, the corresponding corresponding PDCCH Candidate Set number of said ability rating;
The said PDCCH Candidate Set quantity of confirming the current required detection of said UE specifically comprises:
Confirm the PDCCH Candidate Set number that the UE actual needs detects based on the corresponding PDCCH Candidate Set number of said ability rating.
4. the method for claim 1 is characterized in that,
Said physical downlink control channel PDCCH search capability information is the multiple value that converges the corresponding PDCCH Candidate Set of grade number;
The said PDCCH Candidate Set quantity of confirming the current required detection of said UE specifically comprises:
Confirm the PDCCH Candidate Set number that the UE actual needs detects based on the said multiple value that converges the corresponding PDCCH Candidate Set of grade number.
5. the method for claim 1 is characterized in that, the physical downlink control channel PDCCH search capability information of this UE of reported by user equipment UE is the multiple value that converges UE search volume size under the grade; This multiple value is corresponding to a PDCCH Candidate Set number;
The said PDCCH Candidate Set quantity of confirming the current required detection of said UE specifically comprises:
Confirm the PDCCH Candidate Set number that the UE actual needs detects based on the said multiple value that converges the corresponding search volume of grade size.
6. like each described method in the claim 1 to 4, it is characterized in that the said PDCCH Candidate Set number of confirming the required detection of said UE comprises: confirm to be specially the PDCCH Candidate Set number of the required detection of said UE according to the current network loading condition:
Offered load hour is confirmed the PDCCH Candidate Set of lesser amt for said UE;
When offered load is big, confirm the PDCCH Candidate Set of a greater number for said UE.
7. like each described method in the claim 1 to 4, it is characterized in that, also comprise:
The PDCCH Candidate Set number of the required detection of said UE that network side will be confirmed is handed down to UE.
8. the method for claim 1 is characterized in that, also comprises:
UE receives the PDCCH Candidate Set number that network side issues;
UE calculates corresponding search volume according to received Candidate Set number;
Calculate it the search volume carry out blind Detecting.
9. the method for claim 1 is characterized in that, also comprises:
UE calculates corresponding search volume according to the own pairing Candidate Set number of ability information that is reported;
Calculate it the search volume carry out blind Detecting.
10. a device of optimizing the user equipment searches space is characterized in that, comprising:
UE ability acquiring unit is used to obtain the physical downlink control channel PDCCH search capability information of user equipment (UE);
The unit is confirmed in the search volume, confirms the PDCCH Candidate Set number of the required detection of said UE based on the PDCCH search capability information of being obtained, and calculates the search volume of said UE;
Resource allocation unit distributes the control channel resource for said UE from the search volume that calculates.
11. device as claimed in claim 10 is characterized in that, said search volume confirms that the unit comprises:
PDCCH Candidate Set determination module is based on the PDCCH search capability information that said UE reports, the PDCCH Candidate Set number of in the maximum PDCCH Candidate Set number limit that can detect of said UE, selecting the UE actual needs to detect;
The search volume computing module calculates the search volume of said UE according to this PDCCH Candidate Set number.
12. a subscriber terminal equipment is characterized in that, comprising:
The search volume computing unit is used to receive the said network side PDCCH Candidate Set number definite according to the PDCCH search capability of subscriber terminal equipment that network side issues, and calculates corresponding search volume based on this PDCCH Candidate Set number;
Search unit is used for carrying out blind Detecting in the search volume that is calculated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101968860A CN101699901B (en) | 2009-09-28 | 2009-09-28 | Method and device for optimizing search space of user equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101968860A CN101699901B (en) | 2009-09-28 | 2009-09-28 | Method and device for optimizing search space of user equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101699901A CN101699901A (en) | 2010-04-28 |
| CN101699901B true CN101699901B (en) | 2012-08-08 |
Family
ID=42148339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101968860A Active CN101699901B (en) | 2009-09-28 | 2009-09-28 | Method and device for optimizing search space of user equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101699901B (en) |
Families Citing this family (34)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102056185B (en) * | 2009-10-31 | 2014-12-10 | 华为技术有限公司 | Channel blind detection method, channel assignment method and device |
| CN102104866B (en) * | 2010-04-30 | 2014-05-14 | 电信科学技术研究院 | Method and equipment for determining search space of PDCCH CC |
| CN102404857B (en) * | 2010-09-10 | 2014-07-16 | 中兴通讯股份有限公司 | Long term evolution (LTE) downlink control information channel resource allocation method and base station |
| ES2899206T3 (en) | 2011-05-03 | 2022-03-10 | Ericsson Telefon Ab L M | Transmission and reception of control data in a communication system |
| CN102164416B (en) * | 2011-05-03 | 2014-04-16 | 电信科学技术研究院 | Method, system and equipment for transmitting data |
| CN102843748B (en) * | 2011-06-22 | 2017-09-12 | 中兴通讯股份有限公司 | A kind of method and device of determination search space |
| US9300448B2 (en) | 2011-07-12 | 2016-03-29 | Broadcom Corporation | Search space for component carrier specific UL/DL configuration |
| CN102355340B (en) * | 2011-08-12 | 2017-02-08 | 中兴通讯股份有限公司 | method and device for transmitting and receiving downlink control information |
| CN102957497A (en) * | 2011-08-19 | 2013-03-06 | 华为技术有限公司 | Method and equipment for sending and blind detection of physical downlink control channel |
| KR101767021B1 (en) * | 2011-12-28 | 2017-08-09 | 후지쯔 가부시끼가이샤 | Mapping method and apparatus for a search space of a physical downlink control channel |
| CN103368716B (en) * | 2012-03-30 | 2016-06-01 | 重庆重邮信科通信技术有限公司 | The management method of a kind of Physical Downlink Control Channel, monitoring method and apparatus |
| US10111248B2 (en) * | 2012-06-29 | 2018-10-23 | Blackberry Limited | Method and system for cross-subframe scheduling during carrier aggregation |
| CN103931254B (en) * | 2012-11-02 | 2018-05-18 | 华为技术有限公司 | The detection method and equipment of control channel |
| CN109905223B (en) * | 2013-01-18 | 2023-09-12 | 华为技术有限公司 | Method and equipment for determining EPDCCH candidates |
| WO2014110778A1 (en) | 2013-01-18 | 2014-07-24 | 富士通株式会社 | Method and device for transmitting downlink control information and determining search space |
| CN104378188B (en) * | 2013-08-12 | 2019-02-22 | 北京信威通信技术股份有限公司 | A kind of down control channel processing method, device and system |
| CN104683957B (en) * | 2013-12-03 | 2018-12-04 | 北京信威通信技术股份有限公司 | A kind of down control channel processing method, device and system |
| CN104703145B (en) * | 2013-12-09 | 2018-05-11 | 北京信威通信技术股份有限公司 | Cluster multi call blind examination ability processing method, device and system |
| WO2015113233A1 (en) * | 2014-01-28 | 2015-08-06 | 华为终端有限公司 | Capability information reporting method and device |
| WO2016004560A1 (en) * | 2014-06-20 | 2016-01-14 | 华为技术有限公司 | Data transmission method and device |
| CN106301671B (en) * | 2015-05-15 | 2021-01-22 | 中兴通讯股份有限公司 | Transmission method and configuration method of downlink control channel, terminal and base station |
| JP2019503634A (en) * | 2016-02-02 | 2019-02-07 | 華為技術有限公司Ｈｕａｗｅｉ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｃｏ．，Ｌｔｄ． | Downlink control information detection method, downlink control information transmission method, and apparatus |
| CN109286983B (en) * | 2017-07-21 | 2023-08-08 | 普天信息技术有限公司 | Method and device for determining search space |
| CN109391967B (en) * | 2017-08-11 | 2021-04-06 | 维沃移动通信有限公司 | Information reporting and processing method, terminal and network equipment |
| CN109428698B (en) * | 2017-08-25 | 2021-05-18 | 成都鼎桥通信技术有限公司 | Channel resource scheduling method and base station based on terminal capability reporting |
| CN109660315B (en) * | 2017-10-10 | 2021-08-17 | 北京紫光展锐通信技术有限公司 | PDCCH blind detection method and device based on DMRS, storage medium and user equipment |
| US11191011B2 (en) | 2017-11-16 | 2021-11-30 | Nokia Technologies Oy | Managing control channel blind searches between search spaces in new radio |
| CN109802732B (en) | 2017-11-17 | 2021-02-12 | 华为技术有限公司 | Monitoring method and related device for downlink control channel |
| CN110166191B (en) | 2018-02-11 | 2021-01-08 | 维沃移动通信有限公司 | Method and device for determining monitoring information of search space |
| KR20200118838A (en) * | 2018-02-13 | 2020-10-16 | 광동 오포 모바일 텔레커뮤니케이션즈 코포레이션 리미티드 | Method and terminal equipment for blind detection of physical downlink control channel |
| CN111865486B (en) * | 2019-04-30 | 2022-04-05 | 大唐移动通信设备有限公司 | Physical Downlink Control Channel (PDCCH) detection method and equipment |
| CN111918397B (en) * | 2019-05-10 | 2023-04-28 | 华为技术有限公司 | Channel monitoring method and device |
| EP4009555B1 (en) * | 2019-08-28 | 2024-02-14 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Information transmission method and apparatus, terminal, and network device |
| US20230117776A1 (en) * | 2020-03-12 | 2023-04-20 | Beijing Xiaomi Mobile Software Co., Ltd. | Method and device for detecting control channel and method for transmitting information |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008157692A2 (en) * | 2007-06-20 | 2008-12-24 | Motorola, Inc. | Base unit and device for candidate control channels and method therefor |
| WO2009041779A1 (en) * | 2007-09-28 | 2009-04-02 | Lg Electronics Inc. | Wireless communication system for monitoring physical downlink control channel |
-
2009
- 2009-09-28 CN CN2009101968860A patent/CN101699901B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008157692A2 (en) * | 2007-06-20 | 2008-12-24 | Motorola, Inc. | Base unit and device for candidate control channels and method therefor |
| WO2009041779A1 (en) * | 2007-09-28 | 2009-04-02 | Lg Electronics Inc. | Wireless communication system for monitoring physical downlink control channel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101699901A (en) | 2010-04-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101699901B (en) | Method and device for optimizing search space of user equipment | |
| KR102198099B1 (en) | Mobile communication device and method for allocating resources outside of a virtual carrier based on ue capabilities | |
| CN102164416B (en) | Method, system and equipment for transmitting data | |
| CN105792363B (en) | Dispatching method and device in a kind of carrier aggregation of enhancing | |
| CN103037511B (en) | A kind of indicating means, system and equipment strengthening down control channel resources | |
| KR102212116B1 (en) | Mobile communication base station and method for allocating resources outside of a virtual carrier based on ue capabilities | |
| CN101715237A (en) | Uplink transmission method and device based on competition | |
| EP2469949B1 (en) | Dynamic multiple input and multiple output cell cluster | |
| CN102014494A (en) | Configuration method and device of downlink scheduling information | |
| CN102387593A (en) | Communication method adopting space-division multiple access (SDMA) and base station | |
| CN107801247B (en) | Method and equipment in UE (user equipment) supporting variable subcarrier spacing and base station | |
| CN101932024A (en) | Downlink control information transmitting method and device | |
| CN103391563A (en) | Downlink control information transmission method and detection method, base station and user equipment | |
| CN102356580A (en) | Configuring transmission of periodic feedback information on physical uplink shared channel (pusch) | |
| CN104144502A (en) | Physical downlink control information acquisition method, device, terminal and system | |
| CN103238363A (en) | Method and device for transmitting downlink control signal in wireless communication system | |
| CN101692739B (en) | Method and device for indicating transmission mode | |
| CN103378954A (en) | HARQ-ACK channel resource allocation method supporting diversity transmission and channel selection | |
| CN103312483A (en) | Information sending and receiving control method, base station and UE (user equipment) | |
| CN101820669A (en) | Method and device for allocating PDCCH resources | |
| CN102905379A (en) | Method and device for receiving and transmitting of control channel | |
| CN105163264A (en) | Method of handling resource allocation for MTC and related communication device | |
| CN104113387A (en) | Processing method, device and system of synchronous signals, channel estimation method and device | |
| CN103095396B (en) | Transmit and the method and apparatus of blind Detecting strengthening Physical Downlink Control Channel | |
| CN103326839B (en) | The sending, receiving method of the Physical Downlink Control Channel strengthened and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |