CN102710375A - Data demodulation processing and downlink resource scheduling methods and equipment - Google Patents
Data demodulation processing and downlink resource scheduling methods and equipment Download PDFInfo
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Abstract
The invention provides a data demodulation processing and downlink resource scheduling method and equipment, wherein the data demodulation processing method comprises the steps as follows: a terminal receives downlink control information from a base station, and the downlink control information includes indication information adopted in a subsequent specifying scheduling period in the same data demodulation manner; and under the effect of the indication information, data received in the subsequent scheduling period is demodulated in the same data demodulation manner. By adopting the technical scheme provided by the invention, a technical problem of relative technology that PDSCH occupies less resources since the base station frequently issues DCI to the terminal, thereby reducing the occupied resources of the DCI and improving available time-frequency resources for a downlink sharing channel.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of demodulation process of data, the dispatching method and the device of downlink resource.
Background technology
Long Term Evolution (Long Term Evolution; Abbreviating LTE as) project is (the 3rd Generation partnership project of third generation communication partner plan over the past two years; Abbreviate 3GPP as) the new technology development project of the maximum that starts; This with OFDM (Orthogonal Frequency Division Multiplexing; Abbreviate OFDM as)/(Frequent Division Multiple Access FDMA) can be counted as " accurate 4G " technology for the technology of core to frequency division multiple access.The main advantage of LTE is that peak rate is high, and the bandwidth flexible configuration is supported in system's short time delay.For example: the 20MHz spectral bandwidth can provide the peak rate of descending 100Mbps, up 50Mbps; The inner unidirectional transmission time delay of user plane is less than 5ms; Support the flexible configuration of 1.25MHz, can also use carrier aggregation technology, further improve cell capacity to the 20MHz bandwidth.
In the LTE system; How base station and terminal room transmit the resource information distribution is very important; The base station is through different Downlink Control Information (Downlink Control Information; Abbreviate DCI as) form notice terminal, carry the information such as modulation system and re-transmission mode of resource that certain transmission takies, employing among the DCI, the terminal have only solve earlier after these information could be on the time-frequency position of correspondence, take corresponding demodulation mode that data demodulates is come out.The DCI form sends in the control area, and the control area takies preceding 4 OFDM symbols of time domain at most, when DCI information more after a little while, shared OFDM symbol also can be less, thus the spendable running time-frequency resource of DSCH Downlink Shared Channel can corresponding increasing.Under the regulation of existing protocol; LTE FDD (Frequency Division Duplex; Abbreviating FDD as) thread is 1ms, promptly every ms can issue DCI and give terminal (except that semi-persistent scheduling), and DCI transmits and also need take one or more symbols; Thereby the resource that Physical Downlink Shared Channel (Physical Downlink Shared Channel abbreviates PDSCH as) takies will reduce.
To the problems referred to above in the correlation technique, effective solution is not proposed as yet at present.
Summary of the invention
In correlation technique, owing to the base station frequently issues technical problems such as resource that PDSCH that DCI causes for the terminal takies is less, the present invention provides a kind of demodulation process of data, the dispatching method and the device of downlink resource, to solve the problems of the technologies described above at least.
According to an aspect of the present invention; A kind of demodulation process method of data is provided; Comprise: the terminal receives the Downlink Control Information that comes from the base station, wherein, carries indication in the said Downlink Control Information at the follow-up indication information that adopts identical data demodulates mode between dispatching cycle of specifying; Under the indication of said indication information, said terminal is carried out demodulation according to identical data demodulates mode to the follow-up data that receive in dispatching cycle of specifying.
Above-mentioned terminal is carried out demodulation according to identical data demodulates mode to the follow-up data that receive in dispatching cycle of specifying, and comprising: said terminal is carried out demodulation according to the current data demodulation mode to the follow-up data that receive in dispatching cycle of specifying.
Above-mentioned indication information is provided with in the following manner: a binding state field is set in said Downlink Control Information, wherein, when said binding state field is predetermined value, indicates follow-up the appointment to adopt identical data demodulates mode between dispatching cycle.
When confirming that in said base station residue treats that data dispatching is no less than this data dispatching, it is said predetermined value that said binding state field is set.
Above-mentioned binding state fields account is used 1 bit.
After said terminal is carried out demodulation according to identical data demodulates mode to the data that receive in follow-up appointment dispatching cycle; Also comprise: said terminal with in follow-up appointment dispatching cycle to the demodulation result of data all when verifying; Successful result feeds back to said base station with checking, otherwise the result of authentication failed is fed back to said base station.
According to another aspect of the present invention, a kind of dispatching method of downlink resource is provided, has comprised: the base station is provided with indication at the follow-up indication information that adopts identical data demodulates mode between dispatching cycle of specifying in Downlink Control Information; Said base station issues the Downlink Control Information that carries said indication information to the terminal.
Above-mentioned indication information indication is carried out demodulation according to the current data demodulation mode to data.
Above-mentioned indication information is provided with in the following manner: a binding state field is set in said Downlink Control Information, wherein, when said binding state field is predetermined value, indicates follow-up the appointment to adopt identical data demodulates mode between dispatching cycle.
Above-mentioned base station is when confirming that residue treats that data dispatching is no less than this data dispatching, and it is said predetermined value that said binding state field is set.
According to a further aspect of the invention; A kind of demodulation process device of data is provided; Be arranged in the terminal, comprise: receiver module is used to receive the Downlink Control Information that comes from the base station; Wherein, carry indication in the said Downlink Control Information at the follow-up indication information that adopts identical data demodulates mode between dispatching cycle of specifying; Demodulation module is used under the indication of said indication information, according to identical data demodulates mode the follow-up data that receive in dispatching cycle of specifying is carried out demodulation.
Above-mentioned demodulation module also is used for according to the current data demodulation mode the follow-up data that receive in dispatching cycle of specifying being carried out demodulation.
According to a further aspect of the invention; A kind of dispatching device of downlink resource is provided; Be arranged in the base station, comprise: module is set, is used for indication being set at the follow-up indication information that adopts identical data demodulates mode between dispatching cycle of specifying at Downlink Control Information; Sending module is used for issuing the Downlink Control Information that carries said indication information to the terminal
Through the present invention; The technological means that adopts the terminal the identical demodulation mode of follow-up appointment employing dispatching cycle to be carried out demodulation according to the indication information that comes from the base station that receives; Solved in the correlation technique; Owing to the base station frequently issues technical problems such as resource that PDSCH that DCI causes for the terminal takies is less, issue the resource that DCI takies thereby reduced, improved the spendable running time-frequency resource of DSCH Downlink Shared Channel.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart according to the demodulation process method of the data of the embodiment of the invention 1;
Fig. 2 is the structured flowchart according to the demodulation process device of the data of the embodiment of the invention 1;
Fig. 3 is the flow chart according to the dispatching method of the downlink resource of the embodiment of the invention 2;
Fig. 4 is the structured flowchart according to the dispatching device of the downlink resource of the embodiment of the invention 2;
Fig. 5 is the schematic flow sheet according to the dispatching method of the downlink resource of the embodiment of the invention 4.
Embodiment
Hereinafter will and combine embodiment to specify the present invention with reference to accompanying drawing.Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.
Embodiment 1
Fig. 1 is the flow chart according to the demodulation process method of the data of the embodiment of the invention.As shown in Figure 1, this method comprises:
Step S102, the terminal receives the Downlink Control Information that comes from the base station, wherein, carries indication in the above-mentioned Downlink Control Information at the follow-up indication information that adopts identical data demodulates mode between dispatching cycle of specifying;
Step S104, under the indication of above-mentioned indication information, the terminal is carried out demodulation according to identical data demodulates mode to the follow-up data that receive in dispatching cycle of specifying.
Through above-mentioned processing procedure; Because the terminal can be carried out demodulation according to identical data demodulates mode to the follow-up data that receive in dispatching cycle of specifying according to above-mentioned indication information; Therefore, can realize that with demodulation mode in follow-up appointment dispatching cycle only be to notify to the terminal through the mode of indication information, and needn't DCI be handed down to the terminal at every turn; Send the resource that DCI takies thereby reduced, improved the spendable running time-frequency resource of DSCH Downlink Shared Channel.
Above-mentioned identical demodulation mode can be predefined demodulation mode, also can be the demodulation mode that adopts current use, and under latter event, the terminal is carried out demodulation according to the current data demodulation mode to the follow-up data that receive in dispatching cycle of specifying.
Above-mentioned indication information can be realized through newly-increased field in Downlink Control Information; Particularly; Can be provided with in the following manner: a binding state field is set in Downlink Control Information; Wherein, when above-mentioned binding state field is predetermined value, indicate follow-up the appointment to adopt identical data demodulates mode between dispatching cycle.
In order to improve the success rate of data demodulates, can a condition be set for above-mentioned binding state field, for example: when confirming that in the base station residue treats that data dispatching is no less than this data dispatching, it is above-mentioned predetermined value that above-mentioned binding state field is set.
Above-mentioned binding state field can take 1 bit in the present embodiment; For example, when this binding field is 1 (being that above-mentioned predetermined value is 1), indicate follow-up the appointment to adopt identical data demodulates mode between dispatching cycle; In this binding state field is 0 o'clock; According to existing data demodulates processing mode the data that receive are carried out demodulation, for example, data are carried out demodulation according to the DCI of each reception.
Know the demodulation case of terminal in order to make the base station to data; After the terminal is carried out demodulation according to identical data demodulates mode to the data that receive in follow-up appointment dispatching cycle; Can also comprise following processing procedure: with said terminal with in follow-up appointment dispatching cycle to the demodulation result of data all when verifying; Successful result feeds back to said base station with checking, otherwise the result of authentication failed is fed back to said base station.
A kind of demodulation process device of data also is provided in the present embodiment, and this device is arranged in the terminal, is used to realize the foregoing description and preferred implementation, has carried out repeating no more of explanation, describes in the face of the module that relates in this device down.As following employed, the combination of the software and/or the hardware of predetermined function can be realized in term " module ".Although the described device of following examples is preferably realized with software, hardware, perhaps the realization of the combination of software and hardware also maybe and be conceived.Fig. 2 is the structured flowchart according to the demodulation process device of the data of the embodiment of the invention.As shown in Figure 2, this device comprises:
Receiver module 20 is connected to demodulation module 22, is used to receive the Downlink Control Information that comes from the base station, wherein, carries indication in this Downlink Control Information at the follow-up indication information that adopts identical data demodulates mode between dispatching cycle of specifying;
Demodulation module 22 is used under the indication of above-mentioned indication information, according to identical data demodulates mode the follow-up data that receive in dispatching cycle of specifying is carried out demodulation.
Through the function that each module realized in the said apparatus; Make the terminal to carry out demodulation according to identical data demodulates mode to the follow-up data that receive in dispatching cycle of specifying according to above-mentioned indication information; Therefore, can realize that with demodulation mode in follow-up appointment dispatching cycle only be to notify to the terminal through the mode of indication information, and needn't DCI be handed down to the terminal at every turn; Send the resource that DCI takies thereby reduced, improved the spendable running time-frequency resource of DSCH Downlink Shared Channel.
Above-mentioned identical data demodulates mode can adopt the current data demodulation mode at terminal, and at this moment, above-mentioned demodulation module 22 also is used for according to the current data demodulation mode the follow-up data that receive in dispatching cycle of specifying being carried out demodulation.
Embodiment 2
Dispatching method in the present embodiment can be based on the demodulation process scheme of above-mentioned data, and Fig. 3 is the flow chart according to the dispatching method of the downlink resource of the embodiment of the invention.As shown in Figure 3, this method comprises:
Step S302, the base station is provided with indication at the follow-up indication information that adopts identical data demodulates mode between dispatching cycle of specifying in Downlink Control Information;
Step S304, the base station issues the Downlink Control Information that carries above-mentioned indication information to the terminal.
Through above-mentioned processing procedure; Because the base station has issued indication at the follow-up indication information that adopts identical data demodulates mode between dispatching cycle of specifying to the terminal; Make the terminal to carry out demodulation according to identical data demodulates mode to the follow-up data that receive in dispatching cycle of specifying according to above-mentioned indication information; Therefore, can realize that with demodulation mode in follow-up appointment dispatching cycle only be to notify to the terminal through the mode of indication information, and needn't DCI be handed down to the terminal at every turn; Send the resource that DCI takies thereby reduced, improved the spendable running time-frequency resource of DSCH Downlink Shared Channel.
Described in the foregoing description 1, above-mentioned indication information can be indicated according to the current data demodulation mode data are carried out demodulation.
In a preferred implementation of present embodiment; Above-mentioned indication information can be provided with in the following manner: a binding state field is set in Downlink Control Information; Wherein, When the binding state field is predetermined value, indicate follow-up the appointment to adopt identical data demodulates mode between dispatching cycle.
Above-mentioned base station is when confirming that residue treats that data dispatching is no less than this data dispatching, and it is above-mentioned predetermined value that said binding state field is set.
In the present embodiment, a kind of dispatching device of downlink resource is provided also, this device is arranged in the base station, is used to realize the dispatching method of above-mentioned downlink resource.Fig. 4 is the structured flowchart according to the dispatching device of the downlink resource of the embodiment of the invention.As shown in Figure 4, this device comprises:
Through the dispatching device of above-mentioned downlink resource, can reduce equally and send the resource that DCI takies, improved the spendable running time-frequency resource of DSCH Downlink Shared Channel.
Need to prove that the preferred implementation of each module can repeat no more referring to the description of method embodiment in the said apparatus here.
In order to understand the foregoing description 1 and embodiment 2 better, specify below in conjunction with relevant drawings and specific embodiment.In below implementing, be that example describes with LTE FDD.Under the regulation of existing protocol; Concerning LTE FDD, thread is 1ms, and promptly every ms can issue DCI and give terminal (except that semi-persistent scheduling); And the DCI transmission also need take one or more symbols, thereby the resource that DSCH Downlink Shared Channel (PDSCH) takies will reduce.Following examples provide a kind of LTE FDD descending binding dispatching method; Soon two descending scheduling chronomeres (but being not limited to two) bind together and are terminal service; Reduced the resource that DCI takies; Improve the running time-frequency resource of DSCH Downlink Shared Channel, thereby improve descending peak rate down time-frequency resource utilization.
Embodiment 3
The descending binding method of a kind of LTE FDD that present embodiment provides comprises following treatment step:
Step 1; The DCI form to terminal distribution is confirmed according to resource distribution mode and transmission mode in the base station; And, confirm to bind among the DCI value of (bBundled) field, when next scheduling constantly still has data to dispatch according to whether having enough remaining datas to treat scheduling (residue treats that data dispatching is more than or equal to this data dispatching); BBundled is changed to 1, otherwise is changed to 0.
Step 2 after terminal demodulates goes out DCI, parses resource allocation information, carries out the demodulation of downlink data.
Step 3, terminal judge that according to the bBundled value in the DCI information that demodulated in the last step be to still have data to need demodulation next dispatching cycle.When bBundled was 1, showing had the data of identical modulation system to be resolved in same time-frequency position next dispatching cycle, under the situation that does not have the DCI indication, realized right demodulation.Otherwise need be according to new DCI indication demodulation message data.
Step 4, whether feed back to the base station according to the data CRC that a plurality of binding periodic solutions access at the terminal.If some data CRC that demodulates do not pass through in the binding cycle, feedback NACK, otherwise feeding back ACK.Adopt the method for the invention, can under the situation that does not influence the existing system function, reduce the transmission of DCI, improve the utilance of downlink resource.
Adopt the above-mentioned processing procedure of present embodiment, can reduce the transmission of DCI, improve the spendable running time-frequency resource of DSCH Downlink Shared Channel, thereby improve downlink throughput capacity.
Embodiment 4
Present embodiment is in order to reduce the transmission of descending DCI; Adopt the method that bound descending two dispatching cycles; Represent whether to adopt descending binding dispatching method through increasing by 1 bit bBundled in the DCI form again, make the terminal still can right demodulation under second situation of not receiving DCI dispatching cycle.Below illustrate with the mode that in the message at base station configuration terminal, increases field bBundled.
As shown in Figure 5, the dispatching method of the downlink resource of present embodiment comprises following treatment step:
Step S502, flow process begins;
Step S504, the DCI form that downlink transfer adopts is confirmed in the base station.
Step S506, whether base station judges has abundant remaining data to need scheduling, if, then change step S508, if not, change step S510.
Step S508 is made as 1 with bBundled, changes step S512.
Step S510 is made as 0 with bBundled, the step of walking around S512.
Step S512, the downlink data demodulation is carried out according to the DCI form in the terminal, i.e. demodulation DCI.
Step S514, whether bBundled is 1 in the terminal judges DCI form, if, then change step S516, otherwise, step S518 changeed.
Step S516, if bBundled is 1, then the terminal is carried out demodulation in same position with identical parameters in next dispatching cycle.Change step S520.
Step S518, if bBundled is not 1, demodulating data then, feeding back ACK/NACK.Change step S522.
Step S520 is according to twice data demodulates feeding back ACK/NACK as a result.If two dispatching cycles, demodulating data CRC all passed through, then feeding back ACK is given the base station, otherwise feedback NACK.Change step S522.
Step S522 finishes.
Need to prove, only be being two dispatching cycles that example describes in the foregoing description, possibly have the situation of binding the descending scheduling number according to descending FER self adaptation adjustment more than two descending scheduling periodic schedulings and base station.
In another embodiment, a kind of software is provided also, this software is used for carrying out the technical scheme that the foregoing description and preferred implementation are described.
In another embodiment, a kind of storage medium is provided also, has stored above-mentioned software in this storage medium, this storage medium includes but not limited to: CD, floppy disk, hard disk, scratch pad memory etc.
Obviously, it is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize with the general calculation system; They can concentrate on the single computing system; Perhaps be distributed on the network that a plurality of computing system forms, alternatively, they can be realized with the executable program code of computing system; Thereby; Can they be stored in the storage system and carry out, and in some cases, can carry out step shown or that describe with the order that is different from here by computing system; Perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. the demodulation process method of data is characterized in that, comprising:
The terminal receives the Downlink Control Information that comes from the base station, wherein, carries indication in the said Downlink Control Information at the follow-up indication information that adopts identical data demodulates mode between dispatching cycle of specifying;
Under the indication of said indication information, said terminal is carried out demodulation according to identical data demodulates mode to the follow-up data that receive in dispatching cycle of specifying.
2. method according to claim 1 is characterized in that, said terminal is carried out demodulation according to identical data demodulates mode to the follow-up data that receive in dispatching cycle of specifying, and comprising:
Said terminal is carried out demodulation according to the current data demodulation mode to the follow-up data that receive in dispatching cycle of specifying.
3. method according to claim 1 is characterized in that, said indication information is provided with in the following manner:
A binding state field is set in said Downlink Control Information, wherein, when said binding state field is predetermined value, indicates follow-up the appointment to adopt identical data demodulates mode between dispatching cycle.
4. method according to claim 3 is characterized in that, when confirming that in said base station residue treats that data dispatching is no less than this data dispatching, it is said predetermined value that said binding state field is set.
5. method according to claim 3 is characterized in that, said binding state fields account is used 1 bit.
6. according to each described method of claim 1 to 5, it is characterized in that, after said terminal is carried out demodulation according to identical data demodulates mode to the data that receive in follow-up appointment dispatching cycle, also comprise:
Said terminal with in follow-up appointment dispatching cycle to the demodulation result of data during all through checking, with verifying that successful result feeds back to said base station, otherwise the result of authentication failed is fed back to said base station.
7. the dispatching method of a downlink resource is characterized in that, comprising:
The base station is provided with indication at the follow-up indication information that adopts identical data demodulates mode between dispatching cycle of specifying in Downlink Control Information;
Said base station issues the Downlink Control Information that carries said indication information to the terminal.
8. method according to claim 7 is characterized in that, said indication information indication is carried out demodulation according to the current data demodulation mode to data.
9. method according to claim 7 is characterized in that, said indication information is provided with in the following manner:
A binding state field is set in said Downlink Control Information, wherein, when said binding state field is predetermined value, indicates follow-up the appointment to adopt identical data demodulates mode between dispatching cycle.
10. method according to claim 9 is characterized in that, said base station is when confirming that residue treats that data dispatching is no less than this data dispatching, and it is said predetermined value that said binding state field is set.
11. the demodulation process device of data is arranged in the terminal, it is characterized in that, comprising:
Receiver module is used to receive the Downlink Control Information that comes from the base station, wherein, carries indication in the said Downlink Control Information at the follow-up indication information that adopts identical data demodulates mode between dispatching cycle of specifying;
Demodulation module is used under the indication of said indication information, according to identical data demodulates mode the follow-up data that receive in dispatching cycle of specifying is carried out demodulation.
12. device according to claim 11 is characterized in that, said demodulation module also is used for according to the current data demodulation mode the follow-up data that receive in dispatching cycle of specifying being carried out demodulation.
13. the dispatching device of a downlink resource is arranged in the base station, it is characterized in that, comprising:
Module is set, is used for indication being set at the follow-up indication information that adopts identical data demodulates mode between dispatching cycle of specifying at Downlink Control Information;
Sending module is used for issuing the Downlink Control Information that carries said indication information to the terminal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101828551A CN102710375A (en) | 2012-06-05 | 2012-06-05 | Data demodulation processing and downlink resource scheduling methods and equipment |
| PCT/CN2012/077858 WO2013181870A1 (en) | 2012-06-05 | 2012-06-29 | Method and device for demodulation processing of data and scheduling of downlink resources |
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| CN2012101828551A CN102710375A (en) | 2012-06-05 | 2012-06-05 | Data demodulation processing and downlink resource scheduling methods and equipment |
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| WO2014183297A1 (en) * | 2013-05-17 | 2014-11-20 | 富士通株式会社 | Demodulation method, device and system for downlink data |
| WO2016188177A1 (en) * | 2015-10-30 | 2016-12-01 | 中兴通讯股份有限公司 | Method and apparatus for sending enhanced physical downlink control channel |
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| CN102137504A (en) * | 2011-04-12 | 2011-07-27 | 电信科学技术研究院 | Method and device for dispatching transmission of multiple sub-frames |
| CN102215590A (en) * | 2010-04-12 | 2011-10-12 | 中兴通讯股份有限公司 | Scheduling method and system |
| WO2012019361A1 (en) * | 2010-08-13 | 2012-02-16 | 富士通株式会社 | Method and device for transmitting downlink control information, method and device for receiving downlink control information, terminal, base station and communication system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101646224B (en) * | 2008-08-06 | 2012-01-04 | 电信科学技术研究院 | Downlink control information processing method and system, base station equipment and terminal equipment |
| CN102325377B (en) * | 2011-05-24 | 2014-08-06 | 电信科学技术研究院 | Resource scheduling indication method and device |
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Patent Citations (3)
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| CN102215590A (en) * | 2010-04-12 | 2011-10-12 | 中兴通讯股份有限公司 | Scheduling method and system |
| WO2012019361A1 (en) * | 2010-08-13 | 2012-02-16 | 富士通株式会社 | Method and device for transmitting downlink control information, method and device for receiving downlink control information, terminal, base station and communication system |
| CN102137504A (en) * | 2011-04-12 | 2011-07-27 | 电信科学技术研究院 | Method and device for dispatching transmission of multiple sub-frames |
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| WO2014183297A1 (en) * | 2013-05-17 | 2014-11-20 | 富士通株式会社 | Demodulation method, device and system for downlink data |
| WO2016188177A1 (en) * | 2015-10-30 | 2016-12-01 | 中兴通讯股份有限公司 | Method and apparatus for sending enhanced physical downlink control channel |
| CN106656894A (en) * | 2015-10-30 | 2017-05-10 | 中兴通讯股份有限公司 | Method and apparatus for sending an enhanced physical downlink control channel (EPDCCH) |
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