CN102547779A - Method and base station for determining non-detection of down link control information - Google Patents
Method and base station for determining non-detection of down link control information Download PDFInfo
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- CN102547779A CN102547779A CN2010106015106A CN201010601510A CN102547779A CN 102547779 A CN102547779 A CN 102547779A CN 2010106015106 A CN2010106015106 A CN 2010106015106A CN 201010601510 A CN201010601510 A CN 201010601510A CN 102547779 A CN102547779 A CN 102547779A
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Abstract
The embodiment of the invention provides a method and base station for determining non-detection of down link control information. The method comprises that: a receiving terminal sends data through a physical uplink shared channel (PUSCH), and the data is demodulated, so a demodulation result is obtained; and if the signal quality threshold value of the demodulation result is smaller than a preset lowest threshold value, the terminal is determined that the down link control information is not detected. The base station comprises a processing module and a determining module. The scheme provided by the embodiment of the invention can effectively detect the non-detection of DCI0 at UE side, so caused by non-detection are avoided, and the spectral efficiency of the base station is improved.
Description
Technical field
The embodiment of the invention relates to the communication technology, relates in particular to a kind of definite method and base station of down link control information omission.
Background technology
Long Term Evolution (Long Term Evolution; Abbreviate as: LTE) be third generation partner program (3rd Generation Partnership Project; Abbreviate as: 3GPP) a kind of broadband wireless technical standard of proposing of tissue is a High Data Rate, low time delay and based on the GSM standard of full grouping.In LTE; Down link control information (Downlink Control Information; Abbreviate as: DCI) be that base station (NodeB) is used for scheduling user's set (User Equipment; Abbreviate as: control signaling UE), DCI0 (being numbered 0 DCI) expression NodeB scheduling UE goes up the control signaling that line number passes.When NodeB received that scheduling of resource request or the UE of UE have redundant data not send to finish, (Physical Uplink Shared Channel abbreviated as: PUSCH) enterprising data transfer at Physical Uplink Shared Channel through DCI0 indication UE by NodeB.UE according to the sequential of LTE agreement regulation, sends the PUSCH data and gives NodeB after blind check goes out the DCI0 indication.NodeB demodulation PUSCH; When demodulation result was mistake, (Hybrid Automatic Repeat Request abbreviated as: HARQ) mechanism through mixing automatic repeat requests; By NodeB with NACK (Negative ACKnowlegdement; Abbreviate as: NACK) (Physical HARQ Indicator Channel abbreviates as: PHICH) feed back to UE, UE retransmits this corresponding data to information through the downlink physical DSCH Downlink Shared Channel.
When UE the empty inspection of DCI0 appears, especially during omission; NodeB indication UE uploads data; And UE does not upload data (can think that uploading data is empty data) according to the requirement of NodeB, has perhaps uploaded wrong data, causes NodeB not receive correct PUSCH data; NodeB must be NACK to the check results of the demodulation result of the mistake that receives or empty PUSCH data so; NodeB will feed back to UE with nack message through descending PHICH through HARQ mechanism like this, and can't comprise DCI0 among the HARQ, cause UE still can't upload data according to the requirement of NodeB.The result that HARQ retransmits still is that check results is NACK, and the HARQ re-transmission can be carried out always like this, up to reaching the HARQ maximum retransmission.In so during HARQ retransmits, can take valuable uplink and downlink frequency resource, cause the waste of resource.
Summary of the invention
The embodiment of the invention provides a kind of definite method and base station of down link control information omission.
On the one hand, the embodiment of the invention provides a kind of definite method of down link control information omission, comprising:
Receiving terminal carries out demodulation through the data that Physical Uplink Shared Channel PUSCH sends to said data, obtains demodulation result;
If the signal quality threshold value of said demodulation result confirms that less than the minimum threshold that is provided with in advance the down link control information omission appears in said terminal.
On the other hand, the embodiment of the invention also provides a kind of base station, comprising:
Processing module is used for receiving terminal through the data that Physical Uplink Shared Channel PUSCH sends, and said data are carried out demodulation, obtains demodulation result;
Determination module is used for during less than the minimum threshold that is provided with in advance, confirming that the down link control information omission appears in said terminal in the signal quality threshold value of said demodulation result.
The definite method and the base station of the down link control information omission of the embodiment of the invention; Through in the signal quality threshold value of the demodulation result of PUSCH data less than predefined minimum threshold the time; Confirm that the DCI0 omission appears in the UE side; Avoid because the HARQ that omission causes retransmits, and then the waste of avoiding bringing the uplink and downlink frequency resource, the availability of frequency spectrum of base station improved.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply; Obviously, the accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The flow chart of definite method of the down link control information omission that Fig. 1 provides for one embodiment of the invention;
The flow chart of definite method of the down link control information omission that Fig. 2 provides for another embodiment of the present invention;
The structural representation of first kind of base station that Fig. 3 provides for one embodiment of the invention;
The structural representation of second kind of base station that Fig. 4 provides for one embodiment of the invention;
The structural representation of the third base station that Fig. 5 provides for one embodiment of the invention;
The structural representation of the 4th kind of base station that Fig. 6 provides for one embodiment of the invention;
The structural representation of the 5th kind of base station that Fig. 7 provides for one embodiment of the invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer; To combine the accompanying drawing in the embodiment of the invention below; Technical scheme in the embodiment of the invention is carried out clear, intactly description; Obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The flow chart of definite method of the down link control information omission that Fig. 1 provides for one embodiment of the invention, as shown in Figure 1, this method comprises:
Step 101: the base station receiving terminal carries out demodulation through the data that PUSCH sends to these data, obtains demodulation result;
Wherein, Demodulation result comprises: the signal quality relevant parameter of the PUSCH that the terminal is corresponding; Signal to noise ratio (Signal to Interference plus Noise Ratio for example; Abbreviate as: SINR), (Reference Signal Receive Power abbreviates as: RSRP) etc. the reference signal received energy.
After the base station obtains demodulation result, can further preserve this demodulation result.
Step 102: if the signal quality threshold value of this demodulation result less than predefined minimum threshold, then the base station can confirm that the down link control information omission appears in this terminal.
Wherein, the signal quality threshold value of demodulation result is used to characterize this PUSCH and calls the signal quality that receives, and can effectively detect UE and whether upload data at PUSCH.
Predefined minimum threshold can be an empirical value, also can be the minimum threshold that the UE side that obtains through technical staff's counterevidence detects for DCI0.The embodiment of the invention is preferably used the signal quality relevant parameter of PUSCH when zero load, and for example the numerical value of SINR, RSRP's is vertical, and perhaps the integrated value of SINR and RSPR is as minimum threshold.Here the integrated value of said SINR and RSRP can carry out respectively for the numerical value to SINR and RSRP doing the parameter that add operation obtains after the weighting, and the weighted value of SINR and RSRP can be set according to actual conditions.
Wherein, the DCI0 omission occurs, then stop the re-transmission on this HARQ passage, with effective minimizing taking for the uplink and downlink Physical Shared Channel in case confirmed the terminal.
Definite method of the down link control information omission of the embodiment of the invention; Through confirming that the DCI0 omission appears in the UE side during less than predefined minimum threshold in the signal quality threshold value of the demodulation result of PUSCH data; The HARQ that avoids omission to cause retransmits; And then avoided the waste of uplink and downlink frequency resources, improve the availability of frequency spectrum of base station.
The flow chart of definite method of the down link control information omission that Fig. 2 provides for the embodiment of the invention, as shown in Figure 2, this method comprises:
Step 201: the base station receiving terminal carries out demodulation to data and obtains demodulation result, and demodulation result (like SINR or RSRP) is preserved through the data that PUSCH sends;
Step 202: the signal quality threshold value CurThrd that obtains PUSCH according to demodulation result;
Wherein, CurThrd can be the measured value of SINR, also can be the measured value of RSRP, can also be for SINR and RSRP measured value comprehensive, CurThrd=P*SINR+RSRP for example; Wherein P is the coefficient factor of setting.Certainly, CurThrd also can be the parameter relevant with signal quality, the perhaps combination of parameter arbitrarily.Not doing here and give unnecessary details, is that example describes with CurThrd=P*SINR+RSRP.
Step 203: judge whether calling of this PUSCH is just to pass scheduling;
If, execution in step 204;
If not, execution in step 206.
Step 204: judge that whether signal quality threshold value CurThrd is both less than minimum threshold Thrd, again less than historical threshold value HisThrd;
If then execution in step 205;
If then execution in step 206 not.
Step 205: the omission that is scheduling to of confirming this PUSCH causes, and stops the re-transmission on this HARQ passage, finishes.
Step 206: carry out the re-transmission on this HARQ passage.
Need to prove, in above-mentioned steps, can also comprise following optional step: the demodulation result to preserving in the step 201 is carried out verification, obtains check results, and this check results is used to judge whether definite result of omission appears in the terminal correct.Wherein, the verification of demodulation result being carried out can be CRC (Cyclic Redundancy Check abbreviates CRC as).
When check results was NACK, definite result that omission appears in the terminal was correct;
When check results was ACK, it is wrong that definite result of omission appears in the terminal, need judge again.
Further, if check results is ACK, can the signal quality threshold value CurThrd that calculate in the step 202 be upgraded preset historical threshold value HisThrd, for follow-up use.
Definite method of the down link control information omission of the embodiment of the invention; Through confirming that the DCI0 omission appears in the UE side during simultaneously less than predefined minimum threshold and historical threshold value in the signal quality threshold value of the demodulation result of PUSCH data; Effectively detect the problem of UE side DCI0 omission; Avoid the waste of the upstream frequency resource that omission brings, improve the availability of frequency spectrum of base station.And, can carry out verification to demodulation result, and use result that verification obtains that definite result of DCI0 omission is judged, effectively guaranteed the accuracy rate that the DCI0 omission is confirmed.
The structural representation of first kind of base station that Fig. 3 provides for one embodiment of the invention, this base station is for carrying out the special body of said method, and as shown in Figure 3, this base station comprises: processing module 301 and determination module 302.
Concrete, processing module 301 is used for receiving terminal through the data that PUSCH sends, and these data are carried out demodulation, obtains demodulation result;
If determination module 302 is used for the signal quality threshold value of demodulation result less than the minimum threshold that is provided with in advance, confirm that then down link control information DCI0 omission appears in the terminal.
The structural representation of second kind of base station that Fig. 4 provides for one embodiment of the invention, as shown in Figure 4, on the basis of execution mode shown in Figure 3, this base station can further include: Executive Module 303.This Executive Module 303 is used for when determination module 302 confirms that down link control information DCI0 omission appears in the terminal, stopping the re-transmission on this HARQ passage.
The structural representation of the third base station that Fig. 5 provides for one embodiment of the invention; As shown in Figure 5, on the basis of execution mode shown in Figure 4, this base station can further include: verification module 304; Be used for the verification demodulation result, and judge according to check results whether definite result is correct.Concrete, this verification module 304 can comprise: first module and/or Unit second.Wherein, first module is used for when check results is NACK, and the definite result who confirms to occur about the terminal omission is correct; Unit second is used for when check results is ACK, and the definite result who confirms to occur about the terminal omission is wrong.
Further, determination module 302 can also be used for: whether the signal quality threshold value of judging demodulation result is less than the historical threshold value of preserving in advance; Less than minimum threshold, and the signal quality threshold value confirms that down link control information DCI0 omission appears in this terminal during less than historical threshold value in the signal quality threshold value.
The structural representation of the 4th kind of base station that Fig. 6 provides for one embodiment of the invention; As shown in Figure 6; On the basis of execution mode shown in Figure 3, this base station can further include: judge module 305, and this judge module 305 is used for: whether the scheduling of judging this PUSCH is just to pass scheduling; If, then determination module 302 judge demodulation result the signal quality threshold value whether less than predefined minimum threshold.
The structural representation of the 5th kind of base station that Fig. 7 provides for one embodiment of the invention; As shown in Figure 7; On the basis of execution mode shown in Figure 4, this base station can further include: judge module 305, and this judge module 305 is used for: whether the scheduling of judging this PUSCH is just to pass scheduling; If, then Executive Module 303 does not allow this base station to carry out the re-transmission on this HARQ passage.Further, just pass scheduling if judge module 305 is judged being scheduling to of this PUSCH, then determination module 302 judge demodulation result the signal quality threshold value whether less than predefined minimum threshold.
The base station that the embodiment of the invention provides; Through in the signal quality threshold value of the demodulation result of PUSCH data during less than predefined minimum threshold; Confirm that then down link control information DCI0 omission appears in the UE side, effectively detect the problem of UE side DCI0 omission, the HARQ that avoids omission to cause retransmits; And then the waste of the uplink and downlink frequency resource of bringing, improve the availability of frequency spectrum of base station.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be accomplished through the relevant hardware of program command; Aforesaid program can be stored in the computer read/write memory medium; This program the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
Device embodiment described above only is schematic; Wherein the unit as the separating component explanation can or can not be physically to separate also; The parts that show as the unit can be or can not be physical locations also; Promptly can be positioned at a place, perhaps also can be distributed at least two NEs.Can realize the purpose of present embodiment scheme according to the needs selection some or all of module wherein of reality.Those of ordinary skills promptly can understand and implement under the situation of not paying performing creative labour.
What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (18)
1. definite method of a down link control information omission is characterized in that, comprising:
Receiving terminal carries out demodulation through the data that Physical Uplink Shared Channel PUSCH sends to said data, obtains demodulation result;
If the signal quality threshold value of said demodulation result confirms that less than the minimum threshold that is provided with in advance the down link control information omission appears in said terminal.
2. definite method of down link control information omission according to claim 1 is characterized in that, said definite said terminal occurs after the down link control information omission, and said method also comprises:
Stop this and mix the re-transmission on the field repeat requests HARQ passage.
3. definite method of down link control information omission according to claim 1 and 2 is characterized in that, said definite said terminal occurs after the down link control information omission, and said method also comprises:
Said demodulation result is carried out verification, obtain check results;
Judge according to said check results whether definite result of omission appears in said terminal correct.
4. definite method of down link control information omission according to claim 3 is characterized in that, saidly judges that according to check results whether definite result of omission appears in said terminal correct, comprising:
When said check results when denying confirming NACK, definite result that omission appears in said terminal is correct; Perhaps,
When said check results was positive acknowledgement ACK, definite erroneous results of omission appearred in said terminal.
5. definite method of down link control information omission according to claim 1 and 2 is characterized in that, said definite said terminal occurs before the down link control information omission, and said method also comprises:
The signal quality threshold value of said demodulation result is compared with the historical threshold value that prestores;
If the signal quality threshold value of said demodulation result less than the said historical threshold value that prestores, confirms that the down link control information omission appears in said terminal.
6. definite method of down link control information omission according to claim 1 and 2 is characterized in that, said obtaining after the demodulation result, and said method also comprises:
Whether the scheduling of judging this PUSCH is just to pass scheduling;
If whether the signal quality threshold value of then judging said demodulation result is less than predefined minimum threshold.
7. definite method of down link control information omission according to claim 6 is characterized in that, also comprises:
If the scheduling of this PUSCH is not just to pass scheduling, then carries out this and mix the re-transmission on the automatic repeat requests HARQ passage.
8. definite method of down link control information omission according to claim 1 and 2 is characterized in that, said signal quality threshold value is: the numerical value of the signal to noise ratio SINR of said data, and/or, the numerical value of the reference signal received energy RSRP of said data.
9. definite method of down link control information omission according to claim 1 and 2 is characterized in that, said minimum threshold is: the signal quality threshold value when said PUSCH is unloaded.
10. definite method of down link control information omission according to claim 1 is characterized in that, said down link control information is DCI0.
11. a base station is characterized in that, comprising:
Processing module is used for receiving terminal through the data that Physical Uplink Shared Channel PUSCH sends, and said data are carried out demodulation, obtains demodulation result;
Determination module is used for during less than the minimum threshold that is provided with in advance, confirming that the down link control information omission appears in said terminal in the signal quality threshold value of said demodulation result.
12. base station according to claim 11 is characterized in that, also comprises:
Executive Module is used for when said determination module confirms that the down link control information omission appears in said terminal, stops this and mixes the re-transmission on the automatic repeat requests HARQ passage.
13. according to claim 11 or 12 described base stations, it is characterized in that, also comprise:
The verification module is used for the said demodulation result of verification, and judges according to check results whether said definite result is correct.
14. base station according to claim 13 is characterized in that, said verification module comprises:
First module, be used for when said check results when denying confirming NACK, it is correct to confirm that definite result of omission appears in said terminal; Perhaps,
Unit second is used for when said check results is positive acknowledgement ACK, confirms that definite erroneous results of omission appears in said terminal.
15., it is characterized in that said determination module also is used for: judge that whether said signal quality threshold value with demodulation result is less than the historical threshold value of preserving in advance according to claim 11 or 12 described base stations; Less than said minimum threshold, and said signal quality threshold value confirms that the down link control information omission appears in said terminal during less than said historical threshold value in said signal quality threshold value.
16. base station according to claim 11 is characterized in that, said base station also comprises:
Judge module is used to judge whether the scheduling of this PUSCH is just to pass scheduling;
If then said determination module judges that whether the signal quality threshold value of said demodulation result is less than predefined minimum threshold.
17. base station according to claim 12 is characterized in that, said base station also comprises:
Judge module is used to judge whether the scheduling of this PUSCH is just to pass scheduling;
If deny, then said Executive Module is carried out this and is mixed the re-transmission on the automatic repeat requests HARQ passage.
18. base station according to claim 11 is characterized in that, said down link control information is DCI0.
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| CN102868506A (en) * | 2012-09-12 | 2013-01-09 | 大唐移动通信设备有限公司 | Terminal scheduling method and device |
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| CN105634678A (en) * | 2012-10-25 | 2016-06-01 | 华为技术有限公司 | Method and device for repairing missing detection control channel |
| CN103825686A (en) * | 2012-11-16 | 2014-05-28 | 联芯科技有限公司 | Device and method for configuring LTE terminal uplink retransmission scheduling |
| CN104885391B (en) * | 2012-12-17 | 2018-01-16 | Lg电子株式会社 | Receive method, user equipment, the method for sending down link signal and the base station of down link signal |
| US9769838B2 (en) | 2012-12-17 | 2017-09-19 | Lg Electronics Inc. | Method and user device for receiving uplink control information, and method and base station for transmitting uplink control information |
| CN104885391A (en) * | 2012-12-17 | 2015-09-02 | Lg电子株式会社 | Method of receiving downlink signal, user device, method of transmitting downlink signal, and base station |
| CN104640131A (en) * | 2013-11-06 | 2015-05-20 | 北京三星通信技术研究有限公司 | Information processing method and UE |
| CN106471765A (en) * | 2014-06-13 | 2017-03-01 | 苹果公司 | The enhanced LTE UL HARQ feedback instruction improving for power saving and scope |
| CN106471765B (en) * | 2014-06-13 | 2020-04-17 | 苹果公司 | Wireless communication method and system with improved HARQ feedback indication |
| US10903943B2 (en) | 2014-06-13 | 2021-01-26 | Apple Inc. | Enhanced LTE UL HARQ feedback indication for power saving and range improvement |
| CN105634668A (en) * | 2015-10-22 | 2016-06-01 | 合肥东芯通信股份有限公司 | False detection screening method and device of DCI0 signals |
| CN105634668B (en) * | 2015-10-22 | 2019-01-01 | 合肥东芯通信股份有限公司 | A kind of empty inspection screening method and device of DCI0 signal |
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