CN107645356A - PDCCH control channel unit polymerization grade determines method and apparatus - Google Patents
PDCCH control channel unit polymerization grade determines method and apparatus Download PDFInfo
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Abstract
The present invention relates to the control channel unit polymerization grade of PDCCH a kind of to determine method and apparatus, and this method includes：S1, the down channel quality according to active user, it is determined that corresponding initial polymerization grade, and if initial polymerization grade is the first polymerization grade, perform following steps：S2a, judge in control channel unit corresponding to current initial polymerization grade with the presence or absence of idle control channel unit；S3a, if so, then using control channel unit polymerization grade of the current initial polymerization grade as PDCCH in present sub-frame data transfer；S4a, otherwise, if judging, current initial polymerization grade is higher than minimum polymerization grade corresponding to down channel quality, and the initial polymerization grade is degraded, using the initial polymerization grade after degradation as current initial polymerization grade, and return to step S2a.The present invention can improve the success rate of user equipment blind Detecting it is determined that consider channel quality this factor during polymerization grade, reduce the waste of resource.
Description
Technical field
The present invention relates to communication technical field, is determined more particularly, to the control channel unit polymerization grade of PDCCH a kind of
Method and apparatus.
Background technology
At present, in Long Term Evolution (Long Term Evolution, abbreviation LTE) mobile radio system, under physics
Row control channel (Physical Downlink Control Channel, abbreviation PDCCH) is used for bearing downlink control information
(Downlink Control Information, abbreviation DCI), to be allocated to scheduling.
Because PDCCH has different forms, each form corresponds to different control channel unit (Control
Channel Element, abbreviation CCE) polymerization grade, polymerization grade represents for the continuous CEE that PDCCH takes
Number.For different users, the quality of its down channel is different, and the number of the CEE required for PDCCH is also just different, descending letter
Road quality is better, and required CEE number is fewer, and otherwise CEE required number is more.If the CEE number actually distributed
During less than CEE required number, the success rate of user equipment blind Detecting can be reduced, if the CEE number actually distributed is more than required
CEE number, the waste of resource can be caused, reduce resource utilization, so as to cause the decline of systematic function.
The content of the invention
For disadvantages described above, the present invention provides a kind of PDCCH control channel unit polymerization grade and determines method and apparatus,
The success rate of user equipment blind Detecting can be improved, reduces the waste of resource.
In a first aspect, PDCCH provided by the invention control channel unit polymerization grade determines method, including：
S1, the down channel quality according to active user, it is determined that corresponding initial polymerization grade, and if the initial polymerization
Grade is the first polymerization grade, then performs following steps：
S2a, judge in control channel unit corresponding to current initial polymerization grade with the presence or absence of idle control channel
Unit,
S3a, if so, then using control of the current initial polymerization grade as the PDCCH in present sub-frame data transfer
Channel Elements polymerization grade processed；
S4a, otherwise, if judging current initial polymerization grade higher than minimum polymerization etc. corresponding to the down channel quality
Level, then degrade to the initial polymerization grade, using the initial polymerization grade after degradation as current initial polymerization grade, and
Return to step S2a；
Wherein, the number of first polymerization grade corresponding control channel unit in each polymerization grade is most.
Optionally, methods described also includes：
If judging, current initial polymerization grade is equal to minimum polymerization grade corresponding to the down channel quality, feeds back
Control channel unit polymerization grade searches the information of failure.
Optionally, methods described also includes：
If the initial polymerization grade is the second polymerization grade, following steps are performed：
S2b, judge in control channel unit corresponding to current initial polymerization grade with the presence or absence of idle control channel
Unit,
S2b, if so, then using control of the current initial polymerization grade as the PDCCH in present sub-frame data transfer
Channel Elements polymerization grade processed；
S3b, otherwise, if judging, current initial polymerization grade is less than highest polymerization etc. corresponding to the down channel quality
Level, then upgrade to the initial polymerization grade, using the initial polymerization grade after upgrading as current initial polymerization grade, and
Return to step S2b；
Wherein, the number of control channel unit corresponding to second polymerization grade is less than corresponding to the first polymerization grade and controlled
The number of Channel Elements processed.
Optionally, methods described also includes：
If judging, current initial polymerization grade is equal to highest polymerization grade corresponding to the down channel quality, feeds back
Control channel unit polymerization grade searches the information of failure.
Optionally, the control letter for judging whether control channel unit corresponding to current initial polymerization grade is available free
Road unit, including：
According to control channel unit available position calculation formula, the available position of calculating control channel unit；
Judge to whether there is the available position in control channel unit corresponding to current initial polymerization grade,
If so, idle control channel unit in control channel unit corresponding to current initial polymerization grade then be present；
Otherwise, idle control channel unit is not present in control channel unit corresponding to current initial polymerization grade.
Optionally, the down channel quality according to active user, it is determined that corresponding initial polymerization grade, including：
The parameter of the down channel quality for characterizing the active user is obtained, and it is pre- to judge whether the parameter is less than
If not good enough channel quality thresholds value,
If, it is determined that the initial polymerization grade is the first polymerization grade；
Otherwise, it determines the initial polymerization grade is the second polymerization grade.
Optionally, the parameter for being used to characterize the down channel quality of the active user is the channel matter of down channel
Amount instruction accords with.
Optionally, first polymerization grade be corresponding to control channel unit number be 8 polymerization grade, described the
Dimerization grade be corresponding to control channel unit number be 2 polymerization grade, it is minimum corresponding to the down channel quality
Polymerization grade is the polymerization grade that the number of corresponding control channel unit is 4, and/or corresponding to the down channel quality most
High polymerization grade is the polymerization grade that the number of corresponding control channel unit is 8.
Second aspect, PDCCH provided by the invention control channel unit polymerization grade determining device, including：
Initial grade determining module, for the down channel quality according to active user, it is determined that corresponding initial polymerization etc.
Level；
First processing module, for when the initial polymerization grade is the first polymerization grade, performing following steps：
S2a, judge in control channel unit corresponding to current initial polymerization grade with the presence or absence of idle control channel
Unit,
S3a, if so, then using control of the current initial polymerization grade as the PDCCH in present sub-frame data transfer
Channel Elements polymerization grade processed；
S4a, otherwise, if judging current initial polymerization grade higher than minimum polymerization etc. corresponding to the down channel quality
Level, then degrade to the initial polymerization grade, using the initial polymerization grade after degradation as current initial polymerization grade, and
Return to step S2a；
Wherein, the number of first polymerization grade corresponding control channel unit in each polymerization grade is most.
Optionally, described device also includes：
Second processing module, for when the initial polymerization grade is the second polymerization grade, performing following steps：
S2b, judge the whether available free control channel unit of control channel unit corresponding to current initial polymerization grade,
S2b, if so, then using control of the current initial polymerization grade as the PDCCH in present sub-frame data transfer
Channel Elements polymerization grade processed；
S4b, otherwise, if judging, current initial polymerization grade is less than highest polymerization etc. corresponding to the down channel quality
Level, then upgrade to the initial polymerization grade, using the initial polymerization grade after upgrading as current initial polymerization grade, and
Return to step S2b；
Wherein, the number of control channel unit corresponding to second polymerization grade is less than corresponding to the first polymerization grade and controlled
The number of Channel Elements processed.
PDCCH provided by the invention control channel unit polymerization grade determines method and apparatus, is used first according to current
The down channel quality at family determines initial polymerization grade, then according to whether idle control channel unit be present to polymerization grade
It is adjusted, most there is the polymerization grade of idle control channel unit at last as final polymerization grade.Due to the present invention
It is determined that consider channel quality this factor during polymerization grade, therefore it can improve user relative to prior art and set
The success rate of standby blind Detecting, and the waste of resource is reduced, lifting system performance.
Brief description of the drawings
, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present disclosure or technical scheme of the prior art
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some disclosed embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these figures.
Fig. 1 shows that the control channel unit polymerization grade of PDCCH in one embodiment of the invention determines that the flow of method is shown
It is intended to；
Fig. 2 shows that the control channel unit polymerization grade of PDCCH in another embodiment of the present invention determines the flow of method
Schematic diagram；
Fig. 3 shows the structure of the control channel unit polymerization grade determining device of PDCCH in further embodiment of this invention
Schematic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present disclosure, the technical scheme in the embodiment of the present disclosure is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the disclosure, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of disclosure protection.
The present invention provides a kind of PDCCH control channel unit polymerization grade and determines method, and this method can be held by base station
OK, as shown in figure 1, this method includes：
S1, the down channel quality according to active user, it is determined that corresponding initial polymerization grade, and if initial polymerization etc.
Level is the first polymerization grade, then performs following steps：
S2a, judge in control channel unit corresponding to current initial polymerization grade with the presence or absence of idle control channel
Unit；
S3a, if so, then believing current initial polymerization grade as controls of the PDCCH in present sub-frame data transfer
Road unit polymerization grade；
S4a, otherwise, if judging, current initial polymerization grade is higher than minimum polymerization grade corresponding to down channel quality,
Then the initial polymerization grade is degraded, using the initial polymerization grade after degradation as current initial polymerization grade, and returned
Return step S2a；
Wherein, the number of the first polymerization grade corresponding control channel unit in each polymerization grade is most.
It will be appreciated that PDCCH is Physical Downlink Control Channel.
It will be appreciated that the number of the first polymerization grade corresponding control channel unit in each polymerization grade is most,
In other words, grade highest of first polymerization grade in each polymerization grade.
It will be appreciated that current polymerization grade includes 1,2,4,8, i.e., the continuous control channel that a PDCCH takes
The number of unit can be 1,2,4,8.Wherein, the first polymerization grade can select 8, that is to say, that the first polymerization grade is pair
The number for the control channel unit answered is 8 polymerization grade.Minimum polymerization grade can select 4 corresponding to down channel quality,
That is, polymerization that the number that minimum polymerization grade corresponding to down channel quality is corresponding control channel unit is 4 etc.
Level.
Polymerization grade provided by the invention determines method, according to the down channel quality of active user, determines initial polymerization
Grade, if current initial polymerization grade has idle control channel unit, using current initial polymerization grade as most
Whole polymerization grade, otherwise downgrades, and continues after downgrading to judge whether the control channel unit of free time, directly
The free time is extremely found in the current initial polymerization grade greater than or equal to minimum polymerization grade corresponding to down channel quality
Control channel unit.That is, determine initial polymerization grade according to the down channel quality of active user first, then basis
Polymerization grade is adjusted with the presence or absence of the control channel unit of free time, most there is the poly- of idle control channel unit at last
Grade is closed as final polymerization grade.Due to the present invention it is determined that considered during polymerization grade channel quality this because
Element, therefore the success rate of user equipment blind Detecting can be improved relative to prior art, and reduce the waste of resource, lifting system
Performance.
In the specific implementation, in S4a, if judging, current initial polymerization grade is equal to corresponding to down channel quality most
The information of oligomerization grade, then feedback control channel unit polymerization grade lookup failure.If that is, initially gather in current
Close grade and be equal to the control channel unit for not finding the free time corresponding to down channel quality during minimum polymerization grade also, then look into
Look for unsuccessfully, present sub-frame can not be dispatched.
Certainly, if as shown in Fig. 2 in S1, initial polymerization etc. according to determined by the down channel quality of active user
Level is the second grade, then can perform following steps：
S2b, judge in control channel unit corresponding to current initial polymerization grade with the presence or absence of idle control channel
Unit；
S2b, if so, then believing current initial polymerization grade as controls of the PDCCH in present sub-frame data transfer
Road unit polymerization grade；
S4b, otherwise, if judging, current initial polymerization grade is less than highest polymerization etc. corresponding to the down channel quality
Level, then upgrade to the initial polymerization grade, using the initial polymerization grade after upgrading as current initial polymerization grade, and
Return to step S2b；
Wherein, the number of control channel unit corresponding to the second polymerization grade is less than control letter corresponding to the first polymerization grade
The number of road unit.Second polymerization grade can select 2, and the second polymerization grade is that the number of corresponding control channel unit is 2
Polymerization grade.Highest polymerization grade corresponding to down channel quality can be that the number of corresponding control channel unit is 8
Polymerization grade.
It will be appreciated that the number of control channel unit corresponding to the second polymerization grade is less than corresponding to the first polymerization grade
The number of control channel unit, that is to say, that the second polymerization grade is less than the first polymerization grade.
Here, when identified initial polymerization grade is not the first polymerization grade, but during the second polymerization grade, also to sentence
With the presence or absence of idle control channel unit in disconnected current initial polymerization grade, if in the presence of if using the initial polymerization grade as
Final polymerization grade, otherwise upgrades, and continues after upgrading to judge whether the control channel unit of free time,
Until the control channel unit of free time is found in less than or equal to highest polymerization grade corresponding to down channel quality.Can
See, for the different initial polymerization grades initially determined that, take different level adjustment methods, finally give with specific aim
Available polymerization grade.
In the specific implementation, in S4b, if judging, current initial polymerization grade is equal to corresponding to down channel quality most
The information of high polymerization grade, then feedback control channel unit polymerization grade lookup failure.If that is, initially gather in current
Close grade and be equal to the control channel unit for not finding the free time corresponding to down channel quality during highest polymerization grade also, then look into
Look for unsuccessfully, present sub-frame can not be dispatched.
In the specific implementation, whether in S2a or S2b, can following methods be used to judge whether the free time
Control channel unit：
According to control channel unit available position calculation formula, the available position of calculating control channel unit；
Judge to whether there is available position in control channel unit corresponding to current initial polymerization grade；
If so, idle control channel unit in control channel unit corresponding to current initial polymerization grade then be present；
Otherwise, idle control channel unit is not present in control channel unit corresponding to current initial polymerization grade.
Wherein, the process of the available position of control channel unit is calculated in control channel unit available position calculation formula
In, it is necessary to subframe numbers, total parameter such as control channel unit number, current initial polymerization grade, these parameters be all it is known,
Calculating process is simply, conveniently.
In the specific implementation, initial initial polymerization grade can use a variety of determination modes, and one of which is optional really
Determining mode can include：
S11, the parameter for obtaining down channel quality for characterizing active user, and it is default to judge whether parameter is less than
Not good enough channel quality thresholds value；
If S12, it is determined that initial polymerization grade are the first polymerization grade；
S13, otherwise, it determines initial polymerization grade is the second polymerization grade.
Wherein, so-called not good enough channel quality thresholds value is to judge a standard of user's current downlink channel quality, if
Parameter value is less than not good enough channel quality thresholds value, illustrates that current downlink channel is second-rate, user positioned at not good enough, it is determined that it is initial
Polymerization grade is the first polymerization grade, and corresponding control channel number of unit is more.If parameter value is more than or equal to not good enough channel
Threshold value, illustrate that current downlink channel quality is preferable, it is determined that initial exclusive grade be the second polymerization grade, it is corresponding control letter
Road number of unit is less.
Wherein, the parameter of the down channel quality for characterizing active user can be the channel quality instruction of down channel
Symbol, CQI can be reported by user terminal.Certainly, for characterize active user down channel quality parameter also
It can be the down channel quality parameter after Adaptive Modulation and Coding technological adjustment.
In practical application, initial polymerization grade can also be determined using other modes, this present invention is not limited.
Based on identical inventive concept, the control channel unit polymerization grade that the present invention also provides a kind of PDCCH determines dress
Put, as shown in figure 3, the device 300 includes：
Initial grade determining module 301, for the down channel quality according to active user, it is determined that corresponding initial polymerization
Grade；
First processing module 302, for when initial polymerization grade is the first polymerization grade, performing following steps：
S2a, judge in control channel unit corresponding to current initial polymerization grade with the presence or absence of idle control channel
Unit；
S3a, if so, then believing current initial polymerization grade as controls of the PDCCH in present sub-frame data transfer
Road unit polymerization grade；
S4a, otherwise, if judging, current initial polymerization grade is higher than minimum polymerization grade corresponding to down channel quality,
Then the initial polymerization grade is degraded, using the initial polymerization grade after degradation as current initial polymerization grade, and returned
Return step S2a；
Wherein, the number of the first polymerization grade corresponding control channel unit in each polymerization grade is most.
Optionally, the device 300 also includes：
Second processing module 303, for when initial polymerization grade is the second polymerization grade, performing following steps：
S2b, judge the whether available free control channel unit of control channel unit corresponding to current initial polymerization grade；
S2b, if so, then believing current initial polymerization grade as controls of the PDCCH in present sub-frame data transfer
Road unit polymerization grade；
S4b, otherwise, if judging, current initial polymerization grade is less than highest polymerization etc. corresponding to the down channel quality
Level, then upgrade to the initial polymerization grade, using the initial polymerization grade after upgrading as current initial polymerization grade, and
Return to step S2b；
Wherein, the number of control channel unit corresponding to the second polymerization grade is less than control letter corresponding to the first polymerization grade
The number of road unit.
It should be understood that polymerization grade determining device provided by the invention, which is polymerization grade provided by the invention, determines method
The content such as function structure module, its relevant explanation, explanation, optional embodiment and beneficial effect offer of the present invention is provided
Polymerization grade determine the appropriate section of method, repeat no more here.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above method embodiment can lead to
The related hardware of programmed instruction is crossed to complete, foregoing program can be stored in computer-readable storage medium, the journey
Sequence upon execution, execution the step of including above method embodiment.
In the specification of the present invention, numerous specific details are set forth.It is to be appreciated, however, that embodiments of the invention can be with
Put into practice in the case of these no details.In some instances, known method, structure and skill is not been shown in detail
Art, so as not to obscure the understanding of this description.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
The present invention is described in detail, it will be understood by those within the art that；It still can be to foregoing each implementation
Technical scheme described in example is modified, or carries out equivalent substitution to which part technical characteristic；And these modification or
Replace, the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. the control channel unit polymerization grade of PDCCH a kind of determines method, it is characterised in that including：
S1, the down channel quality according to active user, it is determined that corresponding initial polymerization grade, and if the initial polymerization grade
For the first polymerization grade, then following steps are performed：
S2a, judge to whether there is idle control channel unit in control channel unit corresponding to current initial polymerization grade,
S3a, if so, then believing current initial polymerization grade as controls of the PDCCH in present sub-frame data transfer
Road unit polymerization grade；
S4a, otherwise, if judging, current initial polymerization grade is higher than minimum polymerization grade corresponding to the down channel quality,
Then the initial polymerization grade is degraded, using the initial polymerization grade after degradation as current initial polymerization grade, and returned
Return step S2a；
Wherein, the number of first polymerization grade corresponding control channel unit in each polymerization grade is most.
2. according to the method for claim 1, it is characterised in that also include：
If judging, current initial polymerization grade is equal to minimum polymerization grade, feedback control corresponding to the down channel quality
Channel Elements polymerization grade searches the information of failure.
3. according to the method for claim 1, it is characterised in that also include：
If the initial polymerization grade is the second polymerization grade, following steps are performed：
S2b, judge to whether there is idle control channel unit in control channel unit corresponding to current initial polymerization grade,
S2b, if so, then believing current initial polymerization grade as controls of the PDCCH in present sub-frame data transfer
Road unit polymerization grade；
S3b, otherwise, if judging, current initial polymerization grade is less than highest polymerization grade corresponding to the down channel quality,
Then the initial polymerization grade is upgraded, using the initial polymerization grade after upgrading as current initial polymerization grade, and returned
Return step S2b；
Wherein, the number of control channel unit corresponding to second polymerization grade is less than control letter corresponding to the first polymerization grade
The number of road unit.
4. according to the method for claim 3, it is characterised in that also include：
If judging, current initial polymerization grade is equal to highest polymerization grade, feedback control corresponding to the down channel quality
Channel Elements polymerization grade searches the information of failure.
5. according to the method for claim 3, it is characterised in that described to judge to control corresponding to current initial polymerization grade
The whether available free control channel unit of Channel Elements, including：
According to control channel unit available position calculation formula, the available position of calculating control channel unit；
Judge to whether there is the available position in control channel unit corresponding to current initial polymerization grade,
If so, idle control channel unit in control channel unit corresponding to current initial polymerization grade then be present；
Otherwise, idle control channel unit is not present in control channel unit corresponding to current initial polymerization grade.
6. according to the method for claim 3, it is characterised in that the down channel quality according to active user, it is determined that
Corresponding initial polymerization grade, including：
The parameter of the down channel quality for characterizing the active user is obtained, and it is default to judge whether the parameter is less than
Not good enough channel quality thresholds value,
If, it is determined that the initial polymerization grade is the first polymerization grade；
Otherwise, it determines the initial polymerization grade is the second polymerization grade.
7. according to the method for claim 6, it is characterised in that the down channel matter for being used to characterize the active user
The parameter of amount is the CQI of down channel.
8. according to the method for claim 3, it is characterised in that first polymerization grade is corresponding control channel unit
Number be 8 polymerization grade, second polymerization grade be corresponding to control channel unit number be 2 polymerization grade,
Minimum polymerization grade corresponding to the down channel quality is the polymerization grade that the number of corresponding control channel unit is 4, and/
Or the polymerization grade that the number that highest polymerization grade corresponding to the down channel quality is corresponding control channel unit is 8.
A kind of 9. control channel unit polymerization grade determining device of PDCCH, it is characterised in that including：
Initial grade determining module, for the down channel quality according to active user, it is determined that corresponding initial polymerization grade；
First processing module, for when the initial polymerization grade is the first polymerization grade, performing following steps：
S2a, judge to whether there is idle control channel unit in control channel unit corresponding to current initial polymerization grade,
S3a, if so, then believing current initial polymerization grade as controls of the PDCCH in present sub-frame data transfer
Road unit polymerization grade；
S4a, otherwise, if judging, current initial polymerization grade is higher than minimum polymerization grade corresponding to the down channel quality,
Then the initial polymerization grade is degraded, using the initial polymerization grade after degradation as current initial polymerization grade, and returned
Return step S2a；
Wherein, the number of first polymerization grade corresponding control channel unit in each polymerization grade is most.
10. device according to claim 9, it is characterised in that also include：
Second processing module, for when the initial polymerization grade is the second polymerization grade, performing following steps：
S2b, judge the whether available free control channel unit of control channel unit corresponding to current initial polymerization grade,
S2b, if so, then believing current initial polymerization grade as controls of the PDCCH in present sub-frame data transfer
Road unit polymerization grade；
S4b, otherwise, if judging, current initial polymerization grade is less than highest polymerization grade corresponding to the down channel quality,
Then the initial polymerization grade is upgraded, using the initial polymerization grade after upgrading as current initial polymerization grade, and returned
Return step S2b；
Wherein, the number of control channel unit corresponding to second polymerization grade is less than control letter corresponding to the first polymerization grade
The number of road unit.
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| INTEL CORPORATION: "《Transmission of Uplink Control Information on an LAA SCel》", 《3GPP TSG RAN WG1 MEETING #84BIS R1-162357》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11108508B2 (en) * | 2016-04-19 | 2021-08-31 | Telefonaktiebolaget Lm Ericsson (Publ) | Applying more robust transmission procedure |
| CN110557223A (en) * | 2018-06-04 | 2019-12-10 | 电信科学技术研究院有限公司 | Detection method and terminal for Physical Downlink Control Channel (PDCCH) |
| CN111372266A (en) * | 2018-12-26 | 2020-07-03 | 大唐移动通信设备有限公司 | Method and device for adjusting Control Channel Element (CCE) aggregation level |
| CN111372266B (en) * | 2018-12-26 | 2021-11-12 | 大唐移动通信设备有限公司 | Method and device for adjusting Control Channel Element (CCE) aggregation level |
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| CN107645356B (en) | 2020-12-25 |
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