CN101801090B - Method for configuring physical downlink control channel, base station and user equipment - Google Patents
Method for configuring physical downlink control channel, base station and user equipmentDownload PDFInfo
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- CN101801090B CN101801090BCN200910076889ACN200910076889ACN101801090BCN 101801090 BCN101801090 BCN 101801090BCN 200910076889 ACN200910076889 ACN 200910076889ACN 200910076889 ACN200910076889 ACN 200910076889ACN 101801090 BCN101801090 BCN 101801090B
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- 238000012544monitoring processMethods0.000claimsabstractdescription15
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- 230000007774longtermEffects0.000claimsdescription6
- 239000000969carrierSubstances0.000abstractdescription16
- 230000002776aggregationEffects0.000description3
- 238000004220aggregationMethods0.000description3
- 238000005516engineering processMethods0.000description3
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- 230000002708enhancing effectEffects0.000description1
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- 238000010295mobile communicationMethods0.000description1
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
Description
Technical field
The present invention relates to mobile communication technology, particularly a kind of method of configuring downlink physical control channel, base station and user terminal.
Background technology
In Long Term Evolution (LTE) system and wireless communication system before thereof, sub-district can only corresponding carrier wave, and the maximum bandwidth of this carrier wave is 20MHz usually.In enhancing Long Term Evolution (LTE-A) system of follow-up proposition, the peak rate of system requires than LTE system huge raising has been arranged, and requires to reach descending 1Gbps, up 500Mbps.On the 20MHz of a carrier wave, can't satisfy the demands; Therefore; Introduced carrier aggregation (CA, Carrier Aggregation) technology in the LTE-A system, promptly will be continuously in sub-district or discontinuous a plurality of carrier aggregation serve for UE simultaneously together; Usually a plurality of carrier waves with polymerization are called member carrier, and each member carrier is no more than 20MHz usually.As shown in Figure 1, can be in a LTE-A sub-district a plurality of (among the figure be example with 4) member carrier be carried out polymerization, base station and user terminal (UE) can be in the enterprising data transfer of a plurality of member carriers of polymerization, to improve throughput of system.
Downlink physical control channel (PDCCH; Physical Downlink Control Channel) is used to be carried as the resource scheduling information that UE distributes; Each UE monitors the PDCCH that distributes for self; And obtain resource scheduling information, only can be at the indicated running time-frequency resource transmitting data of this resource scheduling information.At present still confirm the collocation method of PDCCH,, obviously wasted the power consumption of UE if directly continue to use the PDCCH collocation method of LTE then can make UE to monitor to all member carriers in the polymerization carrier wave to the LTE-A system.
Summary of the invention
In view of this, the invention provides method, base station and the UE of a kind of PDCCH of configuration,, practice thrift power consumption so that UE need not to monitor all member carriers.
A kind of method that disposes PDCCH, this method comprises:
The base station disposes N PDCCH on one of them member carrier of polymerization carrier wave, each PDCCH is used to dispatch the resource of a member carrier and indicates the member carrier at institute scheduling resource place; Wherein N is the member carrier number in the said polymerization carrier wave.
A kind of base station, this base station comprises: information configuration unit and information transmitting unit;
Said information configuration unit is used for N downlink physical control channel PDCCH of configuration on one of them member carrier of polymerization carrier wave, and each PDCCH is used to dispatch the resource of a member carrier and indicates the member carrier at institute scheduling resource place; Wherein N is the member carrier number in the said polymerization carrier wave;
Said information transmitting unit is used on the member carrier that has disposed a said N PDCCH, sending said PDCCH.
A kind of UE, this UE comprises: information monitoring unit and data transmission unit;
Said information monitoring unit; Being used for to the polymerization carrier wave one of them member carrier that has disposed N downlink physical control channel PDCCH monitors; Confirm the resource of the member carrier that each PDCCH dispatches and the member carrier of indication, wherein N is the member carrier number in the said polymerization carrier wave;
Said data transmission unit is used on the indicated member carrier of each PDCCH according to these PDCCH institute scheduled resources transmission data.
Can find out by above technical scheme; In method provided by the invention, base station and the terminal; The base station disposes N PDCCH on one of them member carrier of polymerization carrier wave, each PDCCH is used to dispatch the resource of a member carrier and indicates the member carrier at institute scheduling resource place; Wherein N is the member carrier number in the said polymerization carrier wave.Only that is to say and on one of them member carrier of polymerization carrier wave, to realize all member carrier resources of scheduling, make the terminal only need on this has disposed the member carrier of PDCCH, monitor, need not to monitor all member carriers, practice thrift power consumption.
Description of drawings
Fig. 1 is the polymerization carrier wave sketch map of LTE-A system;
Fig. 2 concerns sketch map for the embodiment of the invention provides the scheduling of method;
A kind of DCI form sketch map that Fig. 3 provides for the embodiment of the invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer, describe the present invention below in conjunction with accompanying drawing and specific embodiment.
Method provided by the present invention mainly comprises: N PDCCH of configuration on one of them member carrier of polymerization carrier wave, each PDCCH are used to dispatch the resource of a member carrier and indicate the member carrier at institute scheduling resource place; Wherein N is the member carrier number in the polymerization carrier wave.
Carry a Downlink Control Information (DCI among above-mentioned each PDCCH; Downlink Control Infomation); That is to say, on a member carrier, carry the DCI of all member carriers in this polymerization carrier wave, not only comprise the schedule information of a member carrier among this DCI; Also comprise simultaneously the indication information of institute's scheduling resource place member carrier, its scheduling concerns that sketch map can be as shown in Figure 2.This configuration operation is carried out by the base station; Correspondingly; UE can only monitor one of them member carrier in the polymerization carrier wave, listen to PDCCH after, in the PDCCH that listens to, obtain the member carrier indication information and the resource scheduling information at institute scheduling resource place; Thereby find the indicated member carrier of member carrier indication information, and on this member carrier the indicated transmitted over resources data of resource scheduling information.
Because LTE-A systematic research demand is formulated at present, the maximum polymerization of supporting 5 member carriers of LTE-A system, and; A UE maximum is supported in and receives or send data on 5 member carriers simultaneously; Therefore, combine specific embodiment said method to be described with the example that is polymerized to of 5 member carriers at this, basic identical for its thought of polymerization carrier wave of 5 following member carriers; All in protection range of the present invention, give unnecessary details no longer one by one.
Embodiment one: the member carrier indication information at this DCI institute scheduling resource place is carried in the carrier information indication territory that can in all DCI, increase by 3 bits.
The single codeword DCI that defines among the LTE R8 comprises following information field: the resource distribution mode indication territory of 1 bit; Resource allocation indication territory (promptly resource distribution mode is relevant with system bandwidth for concrete bit number); The modulation coding mode indication territory of 5 bits; Hybrid automatic retransmission (HARQ) the process indication territory of 3 bits or 4 bits; The new legacy data indication territory of 1 bit; The re-transmission redundancy versions indication territory of 2 bits; The descending sub frame allocation index indication territory of the power control command indication territory of the PUCCH of 2 bits and 2 bits.
A kind of DCI form sketch map that Fig. 3 provides for the embodiment of the invention; As shown in Figure 3, the LTE-A system can adopt 3 bits of reserving among the DCI to carry the member carrier indication information at this DCI institute scheduling resource place as carrier information indication territory in the present embodiment, and example is as shown in table 1; Can adopt 000 indication to be numbered 1 member carrier; 001 indication is numbered 2 member carrier, and 010 indication is numbered 3 member carrier, and 011 indication is numbered 4 member carrier; 100 indications are numbered 5 member carrier, and 101,110 and 111 keep as subsequent expansion.
Table 1
| Carrier information indication domain information | Corresponding carrier index |
| 000 | 1 |
| 001 | 2 |
| 010 | 3 |
| 011 | 4 |
| 100 | 5 |
| 101 | Keep |
| 110 | Keep |
| 111 | Keep |
If making an appointment, base station and UE adopt the PDCCH configuration mode of embodiment one; Then UE directly decodes according to the DCI form of LTE-A system among this embodiment one behind the PDCCH that listens to; From DCI, obtain the member carrier indication information at this DCI institute scheduling resource place in the carrier information of the 3 bits indication territory, the DCI form that need not detect original LTE system detects.
Embodiment two: can carry the member carrier indication information at this DCI institute scheduling resource place in the carrier information indication territory of DCI increase by 2 bits that are used for dispatching other member carrier resource except the member carrier of PDCCH place.
Can adopt the DCI form of LTE system for the DCI of the member carrier resource at scheduling PDCCH place, wherein can not comprise carrier information indication territory, comprise the resource scheduling information of PDCCH place member carrier among this DCI.
DCI for other member carrier of scheduling except the member carrier of PDCCH place; Its form still can be as shown in Figure 3; The LTE-A system can adopt 2 bits of reserving among the DCI to carry the member carrier indication information at this DCI institute scheduling resource place in the present embodiment, and is as shown in table 2, supposes that the member carrier at PDCCH place is to be numbered 3 member carrier; Can indicate at carrier information adopts 00 indication to be numbered 1 member carrier in the territory; Adopt 01 indication to be numbered 2 member carrier, adopt 10 indications to be numbered 4 member carrier, adopt 11 indications to be numbered 5 member carrier.
Table 2
| Carrier information indication domain information | Corresponding carrier index |
| 000 | 1 |
| 001 | 2 |
| 010 | 4 |
| 011 | 5 |
If making an appointment, base station and UE adopt the PDCCH configuration mode of embodiment two; Then UE can adopt the mode of blind check that the DCI form of employing LTE system and the DCI of the DCI form that adopts the LTE-A system are distinguished after listening to PDCCH; Confirm at first that promptly the form that each DCI is adopted is the DCI form of LTE system or the DCI form of LTE-A system, and then confirm the member carrier at this DCI institute scheduling resource place according to the form of confirming.
Wherein the mode of blind check can adopt multiple mode; Enumerate dual mode at this: one of which, UE can detect each DCI according to the DCI form of LTE system; After detecting the DCI of the DCI form that adopts the LTE system; This DCI is decoded according to the DCI form of LTE system, other DCI is decoded according to the DCI form of LTE-A system.Two, UE can detect according to the DCI form of LTE-A system and the DCI form of LTE system respectively each DCI; For example; Each DCI is at first detected according to the DCI form of LTE-A system; If detect successfully, then this DCI is decoded according to the DCI form of LTE-A system, therefrom obtain the member carrier indication information at this DCI institute scheduling resource place in the carrier information of the 2 bits indication territory; Get nowhere if detect, then decode according to the DCI form of LTE system.
More than be the description that method provided by the present invention is carried out, face base station provided by the present invention and UE down and be described in detail.Wherein, the base station can comprise: information configuration unit and information transmitting unit.
The information configuration unit is used for N PDCCH of configuration on one of them member carrier of polymerization carrier wave, and each PDCCH is used to dispatch the resource of a member carrier and indicates the member carrier at institute scheduling resource place; Wherein N is the member carrier number in the polymerization carrier wave.
Information transmitting unit is used on the member carrier that has disposed N PDCCH, sending PDCCH.
Each above-mentioned PDCCH carries a DCI; Comprise the resource scheduling information of a member carrier in the polymerization carrier wave and the indication information of the member carrier that institute's scheduling resource belongs among this DCI, make N PDCCH be respectively applied for N different member carrier resource of scheduling.
Wherein, the indication information of the member carrier at institute scheduling resource place is carried in carrier information indication territory that 3 bits are set in the DCI that all PDCCH carried of configuration, information configuration unit; Perhaps, the carrier information indication territory of 2 bits is set, carries the indication information of the member carrier at institute scheduling resource place at the DCI that PDCCH carried that is used for dispatching other member carrier resource except the member carrier of PDCCH place.
Correspondingly, UE provided by the invention can comprise: information monitoring unit and data transmission unit.
Wherein, the information monitoring unit is used for to the polymerization carrier wave one of them member carrier that has disposed N PDCCH and monitors, and confirms resource and the member carrier of indication of the member carrier of each PDCCH scheduling.
Data transmission unit is used on the indicated member carrier of each PDCCH according to these PDCCH institute scheduled resources transmission data.
Belong to two kinds of different modes of member carrier to the indication DCI institute scheduling resource of base station employing; UE corresponding adopted different detection mode; That is: after the information monitoring unit listens to PDCCH; In the carrier information indication territory of 3 bits that from the DCI that each PDCCH carries, are provided with, obtain the member carrier indication information at this DCI institute scheduling resource place, and from this DCI, obtain resource scheduling information; On the indicated member carrier of the member carrier indication information that data transmission unit information monitoring unit obtains according to the indicated resource transmission data of resource scheduling information.
Perhaps; After the information monitoring unit listens to PDCCH; DCI to this PDCCH carried carries out blind Detecting; If detect the DCI form that this DCI adopts the LTE system, then from this DCI, obtain resource scheduling information, the notification data transmission unit on the member carrier at this PDCCH place according to the indicated resource transmission data of this resource scheduling information; If detect the DCI form that this DCI adopts the LTE-A system; Obtain the indication information of the member carrier at this DCI institute scheduling resource place in the 2 bit carrier informations indication territory that then from this DCI, is provided with; And from this DCI, obtain resource scheduling information, the notification data transmission unit on the indicated member carrier of this indication information according to the indicated resource transmission data of this resource scheduling information.
Can find out by above description; In method provided by the invention, base station and the terminal; The base station disposes N PDCCH on one of them member carrier of polymerization carrier wave, each PDCCH is used to dispatch the resource of a member carrier and indicates the member carrier at institute scheduling resource place; Wherein N is the member carrier number in the said polymerization carrier wave.Only that is to say and on one of them member carrier of polymerization carrier wave, to realize all member carrier resources of scheduling, make the terminal only need on this has disposed the member carrier of PDCCH, monitor, need not to monitor all member carriers, practice thrift power consumption.
And, the invention provides the concrete grammar that PDCCH indicates the member carrier at institute scheduling resource place, can realize through two specific embodiments provided by the invention, provided two kinds of more excellent implementations that carrier information indication territory is set among the DCI.
Need to prove that the present invention is to be the description that example is carried out with the LTE-A system, but is not restricted to the LTE-A system, can also be applied to adopt other communication system of polymerization ZAP.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope that the present invention protects.
Claims (10)
1. the method for a configuring downlink physical control channel PDCCH is characterized in that, this method comprises:
The base station disposes N PDCCH on one of them member carrier of polymerization carrier wave, each PDCCH is used to dispatch the resource of a member carrier and indicates the member carrier at institute scheduling resource place; Wherein N is the member carrier number in the said polymerization carrier wave.
2. method according to claim 1 is characterized in that, said each PDCCH carries a Downlink Control Information DCI, comprises the resource scheduling information of a member carrier and the indication information of the member carrier that institute's scheduling resource belongs among this DCI.
3. method according to claim 2 is characterized in that, said base station is provided with the carrier information of 3 bits and indicates the territory to carry the indication information of the member carrier at institute scheduling resource place in all said DCI.
4. method according to claim 3; It is characterized in that; This method also comprises: after user terminal UE listens to PDCCH; The carrier information of 3 bits that from DCI, are provided with indication territory obtains the member carrier indication information at this DCI institute scheduling resource place, and on the indicated member carrier of this indication information according to the indicated resource transmission data of said resource scheduling information.
5. method according to claim 2; It is characterized in that; Said base station is provided with the carrier information indication territory of 2 bits at the DCI that PDCCH carried that is used for dispatching other member carrier resource except the member carrier of PDCCH place, carries the indication information of the member carrier at institute scheduling resource place.
6. method according to claim 5; It is characterized in that; This method also comprises: terminal monitoring carries out blind Detecting to the DCI form that this PDCCH carried behind PDCCH, if detect the DCI form that this DCI adopts Long Term Evolution LTE system; Then from this DCI, decode resource scheduling information, on the member carrier at this PDCCH place according to the indicated resource transmission data of this resource scheduling information; Adopt the DCI form that strengthens Long Term Evolution LTE-A system if detect this DCI; Obtain the indication information of the member carrier at this DCI institute scheduling resource place in the 2 bit carrier informations that then from this DCI, the are provided with indication territory, the indicated resource transmission data of resource scheduling information that on the indicated member carrier of this indication information, comprise according to this DCI.
7. a base station is characterized in that, this base station comprises: information configuration unit and information transmitting unit;
Said information configuration unit is used for N downlink physical control channel PDCCH of configuration on one of them member carrier of polymerization carrier wave, and each PDCCH is used to dispatch the resource of a member carrier and indicates the member carrier at institute scheduling resource place; Wherein N is the member carrier number in the said polymerization carrier wave;
Said information transmitting unit is used on the member carrier that has disposed a said N PDCCH, sending said PDCCH.
8. base station according to claim 7; It is characterized in that said information configuration unit is provided with the carrier information of 3 bits and indicates the territory to carry the indication information of the member carrier at institute scheduling resource place in the Downlink Control Information DCI that all PDCCH carried of configuration; Perhaps, the carrier information indication territory of 2 bits is set, carries the indication information of the member carrier at institute scheduling resource place at the DCI that PDCCH carried that is used for dispatching other member carrier resource except the member carrier of said PDCCH place.
9. a UE is characterized in that, this UE comprises: information monitoring unit and data transmission unit;
Said information monitoring unit; Being used for to the polymerization carrier wave one of them member carrier that has disposed N downlink physical control channel PDCCH monitors; Confirm the resource of the member carrier that each PDCCH dispatches and the member carrier of indication, wherein N is the member carrier number in the said polymerization carrier wave;
Said data transmission unit is used on the indicated member carrier of each PDCCH according to these PDCCH institute scheduled resources transmission data.
10. UE according to claim 9; It is characterized in that; After said information monitoring unit listens to PDCCH; In the carrier information indication territory of 3 bits that from the Downlink Control Information DCI that each PDCCH carries, are provided with, obtain the member carrier indication information at this DCI institute scheduling resource place, and from this DCI, obtain resource scheduling information; On the indicated member carrier of the member carrier indication information that said data transmission unit obtains at said information monitoring unit according to the indicated resource transmission data of said resource scheduling information;
Perhaps; After said information monitoring unit listens to PDCCH; DCI to this PDCCH carried carries out blind Detecting; If detect the DCI form that this DCI adopts Long Term Evolution LTE system, then from this DCI, obtain resource scheduling information, notify said data transmission unit on the member carrier at this PDCCH place according to the indicated resource transmission data of this resource scheduling information; Adopt the DCI form that strengthens Long Term Evolution LTE-A system if detect this DCI; Obtain the indication information of the member carrier at this DCI institute scheduling resource place in the 2 bit carrier informations indication territory that then from this DCI, is provided with; And from this DCI, obtain resource scheduling information, notify said data transmission unit on the indicated member carrier of this indication information according to the indicated resource transmission data of this resource scheduling information.
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| CN102404857B (en)* | 2010-09-10 | 2014-07-16 | 中兴通讯股份有限公司 | Long term evolution (LTE) downlink control information channel resource allocation method and base station |
| CN103181093A (en)* | 2010-09-28 | 2013-06-26 | 富士通株式会社 | Method, user equipment, base station and system for determining component carrier scheduled in cross-carrier scheduling |
| CN103095632B (en)* | 2011-11-04 | 2018-02-06 | 中兴通讯股份有限公司 | Method and device for configuring carrier control domain |
| CN103108384B (en)* | 2011-11-09 | 2016-10-26 | 华为技术有限公司 | Obtain the method for schedule information, the control method obtaining schedule information and device |
| CN103517432B (en)* | 2012-06-29 | 2017-02-01 | 华为技术有限公司 | Channel resource indicating method and device |
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| PL2901793T3 (en) | 2012-09-27 | 2017-05-31 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods and systems for tdd pucch harq resource allocation for enhanced physical downlink control channel (epdcch) |
| CN104756413B (en)* | 2012-11-09 | 2017-12-22 | 华为技术有限公司 | A transmission method and device for a downlink control channel |
| US20180062804A1 (en)* | 2015-04-10 | 2018-03-01 | Telefonaktiebolaget Lm Ericsson (Publ) | Decoding in Networks using Carrier Aggregation |
| KR20240058954A (en) | 2016-05-11 | 2024-05-07 | 아이디에이씨 홀딩스, 인크. | Medium access protocol data unit assembly in wireless systems |
| CN108631923B (en)* | 2017-03-24 | 2020-11-17 | 华为技术有限公司 | Information transmission method, network equipment and terminal equipment |
| CN108632960B (en)* | 2017-03-24 | 2023-04-18 | 中兴通讯股份有限公司 | Transmission method and device of physical downlink control channel |
| CN108811052B (en)* | 2017-04-28 | 2021-05-14 | 电信科学技术研究院 | A downlink control channel detection and reception method, terminal and network side device |
| CN110012482B (en)* | 2018-01-05 | 2020-10-30 | 维沃移动通信有限公司 | Method and device for wireless communication |
| CN117858278A (en) | 2019-01-10 | 2024-04-09 | 北京三星通信技术研究有限公司 | Monitoring method of physical downlink control channel, terminal equipment and storage medium |
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