CN102201885A - Transmission method of carrier wave scheduling information and apparatus thereof - Google Patents
Transmission method of carrier wave scheduling information and apparatus thereof Download PDFInfo
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- CN102201885A CN102201885A CN2010101338178A CN201010133817A CN102201885A CN 102201885 A CN102201885 A CN 102201885A CN 2010101338178 A CN2010101338178 A CN 2010101338178A CN 201010133817 A CN201010133817 A CN 201010133817A CN 102201885 A CN102201885 A CN 102201885A
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Abstract
The invention discloses a transmission method of carrier wave scheduling information and an apparatus thereof. The method comprises the following steps: determining the scheduling indication mode of user equipment with network side; when the scheduling indication mode is determined as non carrier wave scheduling, adding carrier wave indication CIF information field on the DCI of the specific search space of the user equipment, and the value of the CIF information field is the carrier wave number of the carrier wave scheduled by the DCI. According to the invention, the problem that in present carrier wave polymerization system the understanding of the DCI length by base station and user may be different is solved.
Description
Technical field
The present invention relates to wireless communication technology field, relate in particular to a kind of carrier dispatching information transferring method and device thereof.
Background technology
At LTE (Long Term Evolution, Long Term Evolution) in the system, the information of descending control and the information of uplink scheduling are at DCI (Downlink Control Information, Downlink Control Information) carries in, PDCCH on each carrier wave (Physical Downlink Control Channel, Physical Downlink Control Channel) information is indicated the schedule information on this carrier wave.Different DCI format (DCI form) distinguishes by length.For the LTE-A system, can support the polymerization between the different bandwidth, promptly couple together to make and be used for obtaining higher data rate, and can support between the continuous carrier and the polymerization between the discontinuous carrier wave by resource with a plurality of LTE carrier waves (claiming member carrier again).Fig. 1 shows the polymerization situation between the discontinuous carrier wave.
In previous meeting aspect the descending control of LTE-A in the discussion about PDCCH, mainly discussed for combined coding and absolute coding Scheme Selection, as shown in Figure 2, wherein method 2 and 3 (Alternative 2 among the figure and Alternative 3) is the mode of combined coding, and method 1 and 4 (Alternative1 among the figure and Alternative 4) is the mode of absolute coding.For the mode of combined coding, the amount of overhead of information can be less; And for the mode of absolute coding, will be better for the compatibility of R8.Through the repeatedly discussion of meeting, determined to support the mode of absolute coding substantially for the processing of PDCCH, that is, the PDCCH information points one or more carrier waves on carrier wave can have the carrier wave indication information of 3 bits.
According to above-mentioned conclusion, mainly there are two kinds of schemes in present PDCCH indicating means:
Scheme 1: only indicate the schedule information on this carrier wave.The base station independently sends PDCCH at each member carrier, and this PDCCH only can dispatch the physical resource in this member carrier, and as shown in Figure 3, the benefit of this method is that better with the compatibility of R8 system, the probability of PDCCH blocking is lower, and power-balance;
Scheme 2: be by striding the schedule information on the other carrier wave of carrier dispatching indication, promptly can dispatch the physical resource of other member carrier by a plurality of PDCCH on the member carrier, each PDCCH can only dispatch the resource of a member carrier, as shown in Figure 4, can transmit the schedule information of carrier wave 1,2,3,4,5 on a plurality of PDCCH of the DCI of carrier wave 3 respectively.The main advantage of this scheme is that the flexibility of scheduling is higher, can carry out interference coordination preferably.
Through the repeatedly discussion of meeting, determine that scheme 1 and scheme 2 can use in the LTE-A system, the base station can be switched in these two kinds of schemes flexibly, the configuration of having determined to stride carrier dispatching simultaneously is UE-specific, promptly need UE (User Equipment, subscriber equipment) at UE-specific space blind check DCI, as long as and disposed and striden carrier dispatching, the CIF (carrier wave indication territory) that will add 3 bits among the DCI, with the indication base station configuration is to stride carrier dispatching.
In the LTE system, terminal need be carried out blind Detecting simultaneously to the PDCCH of public (Common) search volume and user-specific (UE-specific) search volume, and the CCE of PDCCH (carrier wave) polymerization grade can be 1,2,4,8.Under every kind of CCE polymerization grade, it is different needing the number of the candidate PDCCH of blind check, has provided description in the 9.1.1 of 3GPP TS36.213, specifically as shown in Figure 5.
Simultaneously needing two kinds of DCI forms of blind check for every kind of transmission mode, is to distinguish by length between the different DCI, and UE is according to different polymerization grades, and blind check is 44 times at most, and wherein the Common search volume is 12 times, UE-specific search volume 32 times.
In the Common search volume, only there is the DCI of two kinds of length.In the UE-specific search volume, according to the difference of transmission mode, UE needs the DCI of blind check different-format, and every kind of transmission mode is the length of only corresponding two kinds of DCI also, specifically as shown in Figure 6.
In the process that RRC reshuffles, as shown in Figure 7, the base station at first can be passed through RRC (RadioResource Control, Radio Resource control) connection and reshuffle (RRCConnectionReconfiguration) notice UE reconfiguration message.After UE receives this information, can carry out the operation of reprovision, after reprovision was finished, UE reshuffled according to dispatch command transmission RRC connection on corresponding resource of base station and finishes (RRCConnectionReconfigurationComplete) information, finishes the process of reprovision.
The situation that base station and user understand differently and cause DCI length might appear in the process of reprovision, after just the base station has sent RRCConnectionReconfiguration information, the base station does not know when UE has finished the process of reprovision, so the base station does not know which type of configuration to send dispatch command to UE with.In the R8 system,, when reshuffling, use DCI format1A to carry dispatch command for fear of this situation.
And in carrier aggregation system, stride carrier dispatching or be configured to non-when striding carrier dispatching in base station configuration from striding carrier dispatching, the base station does not know when UE has finished the renewal of configuration, therefore UE is in the process of reshuffling, base station and UE can occur for the situation that the DCI length that needs blind check understands differently and causes, cause mistake occurring in the blind check DCI process.As shown in Figure 8, eNB (base station) is after UE sends RRCConnectionReconfiguration message, send PDCCH (DCI 0) when also not receiving the RRCConnectionReconfigurationComplete message that UE returns, this may cause UE to understand different with eNB for the DCI length that needs blind check.
At this problem, the solution that proposes has at present:
(1) DCI of two kinds of length of base station transmits, but the signaling consumption that this scheme causes can be many;
(2) utilize the process of RACH (Random Access Channel, Random Access Channel), but this scheme need redefine preamble sequence (pilot frequency sequence), bigger to the change of standard;
(3) DCI with the common search volume transmits RRCConnectionReconfiguration and RRCConnectionReconfigurationComplete information, but because the size in common space is limited, and must remove to pass the DCI in common space with the bigger degree of polymerization, so the probability of PDCCHblocking can be bigger;
(4) guarantee that the DCI on the carrier wave does not add CIF, but this scheme need define new search volume.
The inventor finds that there is following defective at least in prior art in realizing process of the present invention:
Stride carrier dispatching or be configured to the non-carrier dispatching of striding at base station configuration from striding carrier dispatching, understanding for DCI between base station and the UE may be inconsistent, UE is when UE-specific space blind check DCI, can not accurately detect DCI, promptly occur the situation that base station and user understand differently and cause DCI length in handoff procedure, present scheme all can not well address this problem.
Summary of the invention
Embodiments of the invention provide a kind of carrier dispatching method for sending information and device thereof, in order to solve the problem that the base station that may occur when carrier dispatching is striden in configuration in the existing carrier aggregation system and user understand differently and cause DCI length.
The carrier dispatching method for sending information that the embodiment of the invention provides comprises:
Network side is determined the scheduling indicating mode of subscriber equipment;
Non-when striding carrier dispatching when being defined as, in the DCI of the exclusive search volume of described subscriber equipment, add carrier wave indication CIF information field, the value of described CIF information field is made as the value with the subscriber equipment agreement;
When being defined as striding carrier dispatching, in the DCI of the exclusive search volume of described subscriber equipment, add the CIF information field, the value of described CIF information field is the carrier index of the carrier wave that DCI dispatched.
The carrier dispatching information transmitting apparatus that the embodiment of the invention provides comprises:
The carrier dispatching determination module is used for determining the scheduling indicating mode of subscriber equipment;
The carrier dispatching module is used for being defined as non-ly when striding carrier dispatching when described carrier dispatching determination module, adds carrier wave indication CIF information field in the DCI of the exclusive search volume of described subscriber equipment, and the value of described CIF information field is made as the value with the subscriber equipment agreement; Perhaps, when described carrier dispatching determination module is defined as striding carrier dispatching, add the CIF information field in the DCI of the exclusive search volume of described subscriber equipment, the value of described CIF information field is the carrier index of the carrier wave that DCI dispatched.
In the above embodiment of the present invention, if subscriber equipment is used the non-carrier dispatching of striding, then add carrier wave indication territory CIF information in the DCI of the exclusive search volume of described subscriber equipment, the value of this CIF information is made as the value that pre-defines (promptly in advance with the value of subscriber equipment agreement); If the user used stride carrier dispatching, then in the DCI of the exclusive search volume of described subscriber equipment, add CIF information, the carrier index of the member carrier that this DCI of this CIF message identification is dispatched.Like this, because the DCI of the exclusive search volume of subscriber equipment has the CIF territory before configuration and after the configuration, therefore when carrier dispatching is striden in configuration and striding carrier dispatching and non-striding when switching between the carrier dispatching, the situation that base station and UE understand differently and cause for DCI length can not occur, thereby avoid the problem that in layoutprocedure, may occur.
Description of drawings
Fig. 1 is the polymerization schematic diagram between the discontinuous carrier wave of existing LTE system;
Fig. 2 is for having the descending control of LTE-A aspect now about PDCCH indication scheme schematic diagram;
Fig. 3 only dispatches the schematic diagram of this carrier wave for PDCCH in the existing LTE-A system;
Fig. 4 strides the schematic diagram of carrier dispatching for PDCCH in the existing LTE-A system;
Fig. 5 is a PDCCH blind check candidate collection schematic diagram in the prior art;
Fig. 6 is the schematic diagram of different transmission mode in the prior art;
Fig. 7 reshuffles schematic flow sheet for RRC in the prior art;
Base station that Fig. 8 occurs when striding carrier dispatching for configuration in the prior art and user understand differently to DCI length and cause the problem schematic diagram;
The schematic flow sheet that Fig. 9 provides for the embodiment of the invention for the scheduling of R10UE indication carrier wave;
Figure 10 A, Figure 10 B are respectively the non-schematic diagram of striding carrier wave and striding carrier dispatching DCI in the embodiment of the invention;
The base station equipment structural representation that Figure 11 provides for the embodiment of the invention.
Embodiment
At the problems referred to above that prior art exists, the embodiment of the invention provides a kind of technical scheme of transmitting carrier dispatching information, and base station that may occur when striding carrier dispatching with the solution configuration and user understand differently to DCI length and cause problem.
In the embodiment of the invention, for R10 user (being LTE-A Release10 system user), requirement all adds CIF all the time at the DCI in its UE-specific space format, and the CIF value among the DCI defined, wherein, when carrier dispatching was not striden in configuration, the value of the CIF among this DCI was the fixed value of setting; When having disposed when striding carrier dispatching, the CIF among the DCI identifies the carrier index of the carrier wave of this DCI scheduling, promptly is the schedule information of UE indication member carrier by this DCI.Like this, for UE, when the DCI blind check is carried out in its UE-specific space, the DCI that can the correct understanding base station sends, what solved that the DCI length that can not the correct understanding base station sends because of UE caused strides the DCI detection problem in the handoff procedure between the carrier wave configuration with non-striding the carrier wave configuration.
Below in conjunction with the accompanying drawing among the present invention, the technical scheme among the present invention is carried out clear, complete description, obviously, described embodiment is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, the every other embodiment that those of ordinary skills are obtained under the prerequisite of not making creative work belongs to the scope of protection of the invention.
In the LTE system, when UE just started shooting, it can at first be operated under the single carrier mode; In the process that this UE and base station connect, can report the version number of oneself; The version number that the base station reports according to UE, if finding this UE is the R10 subscriber equipment, in DCI, all to add CIF when then the base station is for this UE transmission carrier dispatching information, promptly the UE-specific dispatch command for this UE all needs to add CIF all the time, otherwise, can handle the UE-specific dispatch command of this UE according to old process.
Referring to Fig. 9, for being the flow process of R10UE transmission carrier dispatching information in the embodiment of the invention, as shown in the figure, this flow process can comprise the steps:
If the decision of step 902 base station is not striden carrier dispatching to this object UE, then execution in step 903; If decision uses this DCI to stride carrier dispatching to this object UE, i.e. execution in step 904 then.
The carrier dispatching of not striding alleged in this step is meant, independently sends PDCCH at the member carrier of this DCI, and this PDCCH only can dispatch the physical resource in this member carrier, as shown in Figure 3; The carrier dispatching of striding alleged in this step is meant, dispatches the physical resource of other member carrier by a plurality of PDCCH on the member carrier of this DCI, and each PDCCH can only dispatch the resource of a member carrier, as shown in Figure 4.
In this step, this fixed value pre-defines, and promptly appoints with UE in advance, can be taken as " virtual CRC " (virtual CRC check sign indicating number) as this value, is used for reducing the PDCCH probability of false detection.
Shown in Figure 10 A, the base station is in DCI behind the CIF of the value of adding for the fixed value set, this DCI is transmitted on the user-specific search volume, UE can reduce the PDCCH probability of false detection according to CIF value pre-set among this DCI after its exclusive search volume searches the PDCCH of this member carrier like this.Wherein, according to current mechanism, UE can know whether be configured to stride carrier dispatching by RRC (Radio ResourceControl, the Radio Resource control) signaling that the base station sends.
Shown in Figure 10 B, the base station is after the value of adding is the CIF of carrier index in DCI, this DCI is transmitted on the user-specific search volume, UE can determine the carrier dispatching information of carrying among this DCI is to dispatch which member carrier according to the CIF among the DCI of this member carrier after its exclusive search volume searches the PDCCH of this member carrier like this.
For R10UE, if UE searches in its UE-specific search volume, and search DCI, then obtain corresponding carrier dispatching information, and can carry out carrier dispatching according to the carrier dispatching information that gets access to according to the CIF among this DCI.Wherein, if UE not configuration do not stride carrier dispatching, to determine the CIF of PDCCH correspondence among the DCI be pre-set fixed value to UE so, and dispatch physical resource on this member carrier according to the schedule information of correspondence; Stride carrier dispatching if UE has disposed, the CIF of PDCCH correspondence is a carrier index among this DCI so, and then UE is according to the schedule information of correspondence, and the physical resource on the indicated member carrier of this CIF is dispatched.
In the above-mentioned flow process, the length of CIF can be 3 bit lengths of fixing.
By above flow process as can be seen, on the one hand, if R10 user is not configured to stride carrier dispatching, promptly the PDCCH on all carrier waves of this user can only carry the dispatch command on this carrier wave and the corresponding up-link carrier.This moment, the CIF territory existed, and the value of CIF is made as fixed value.Stride carrier dispatching if this user has disposed, this moment, the CIF territory existed equally, and the value of CIF is exactly corresponding carrier index.When carrier dispatching is striden in configuration, because the DCI in R10 user's UE-specific space is the CIF territory that 3 bits are arranged before configuration and after the configuration, therefore when carrier dispatching is striden in configuration, the situation that base station and UE understand differently and cause for DCI length can not occur, thereby avoid the problem of the DCI flase drop that in layoutprocedure, may occur.
On the other hand, the DCI that need transmit two kinds of length with base station in the prior art compares the DCI length scheme that causes that understands differently to avoid base station and user, and the embodiment of the invention has been saved signaling consumption; Utilize the RACH process to avoid base station and user that the DCI length scheme that causes that understands differently is compared with prior art, the embodiment of the invention does not need to redefine pilot frequency sequence, thereby little to the change of standard; Use the DCI transmission carrier dispatching information of common search volume transmission to compare with prior art,, thereby reduced the probability of PDCCH blocking because the embodiment of the invention is used UE-specific space transmission carrier dispatching information; Do not add CIF and to avoid base station and user the DCI length scheme that causes that understands differently is compared with the DCI on guaranteeing a carrier wave in the prior art, the embodiment of the invention does not need to define new search volume.
Based on identical technical conceive, the embodiment of the invention also provides a kind of carrier dispatching information carrying means.This installs normally base station equipment.
As shown in figure 11, the carrier dispatching information carrying means that the embodiment of the invention provides can comprise: carrier dispatching determination module 1101 and carrier dispatching module 1102, wherein:
Carrier dispatching determination module 1101 is used for determining the scheduling indicating mode of subscriber equipment;
In the said apparatus, carrier dispatching module 1102 is not when carrier dispatching is striden in configuration, and set CIF can be the virtual CRC of DCI.
In the said apparatus, carrier dispatching module 1102 can specifically be used for, when carrier dispatching determination module 1101 is defined as non-carrier dispatching and the described subscriber equipment of striding when being LET-A Release10 subscriber equipment, in the DCI of the exclusive search volume of described subscriber equipment, add the CIF of pre-defined value; Perhaps, when carrier dispatching determination module 1101 was defined as striding carrier dispatching and described subscriber equipment and is LET-A Release10 subscriber equipment, the value of adding was the CIF of member carrier numbering in the DCI of the exclusive search volume of described subscriber equipment.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, module in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
The invention described above embodiment sequence number is not represented the quality of embodiment just to description.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (9)
1. a carrier dispatching information transferring method is characterized in that, comprises the steps:
Network side is determined the scheduling indicating mode of subscriber equipment;
Non-when striding carrier dispatching when being defined as, in the DCI of the exclusive search volume of described subscriber equipment, add carrier wave indication CIF information field, the value of described CIF information field is made as the value with the subscriber equipment agreement;
When being defined as striding carrier dispatching, in the DCI of the exclusive search volume of described subscriber equipment, add the CIF information field, the value of described CIF information field is the carrier index of the carrier wave that DCI dispatched.
2. the method for claim 1 is characterized in that, described user equipment searches arrives after the described DCI, also comprises:
If network side is not striden carrier dispatching for described user device configuration, then described subscriber equipment according to described DCI go up carrying schedule information dispatch physical resource on this member carrier;
Stride carrier dispatching if network side has been described user device configuration, then described subscriber equipment is dispatched the physical resource on the member carrier that value identified of described CIF information field according to the schedule information that described DCI goes up carrying.
3. method as claimed in claim 1 or 2 is characterized in that, the value of described and subscriber equipment agreement is as the virtual CRC check sign indicating number of described DCI.
4. method as claimed in claim 1 or 2 is characterized in that, the length of described CIF information field is 3 bits.
5. method as claimed in claim 1 or 2 is characterized in that, described subscriber equipment is the LET-ARelease10 subscriber equipment.
6. a carrier dispatching information carrying means is characterized in that, comprising:
The carrier dispatching determination module is used for determining the scheduling indicating mode of subscriber equipment;
The carrier dispatching module is used for being defined as non-ly when striding carrier dispatching when described carrier dispatching determination module, adds carrier wave indication CIF information field in the DCI of the exclusive search volume of described subscriber equipment, and the value of described CIF information field is made as the value with the subscriber equipment agreement; Perhaps, when described carrier dispatching determination module is defined as striding carrier dispatching, add the CIF information field in the DCI of the exclusive search volume of described subscriber equipment, the value of described CIF information field is the carrier index of the carrier wave that DCI dispatched.
7. device as claimed in claim 6 is characterized in that, described carrier dispatching module specifically is used for, and when described carrier dispatching determination module is defined as non-ly when striding carrier dispatching, the value of described CIF information field is made as the virtual check code of CRC of this DCI.
8. device as claimed in claim 6 is characterized in that, described carrier dispatching module specifically is used for, and the length that described CIF information field is set is 3 bits.
9. device as claimed in claim 6, it is characterized in that, described carrier dispatching module specifically is used for, when described carrier dispatching determination module is defined as non-carrier dispatching and the described subscriber equipment of striding when being the LET-ARelease10 subscriber equipment, the value of adding is the CIF domain information with the about definite value of subscriber equipment in the DCI of the exclusive search volume of described subscriber equipment; Perhaps, when described carrier dispatching determination module was defined as striding carrier dispatching and described subscriber equipment and is LET-A Release10 subscriber equipment, the value of adding was the CIF information field of member carrier numbering in the DCI of the exclusive search volume of described subscriber equipment.
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| WO2022120846A1 (en) * | 2020-12-11 | 2022-06-16 | 北京小米移动软件有限公司 | Method and apparatus for switching scheduling mode |
| WO2022236558A1 (en) * | 2021-05-10 | 2022-11-17 | Oppo广东移动通信有限公司 | Method and apparatus for data transmission, and device and storage medium |
| WO2023184111A1 (en) * | 2022-03-28 | 2023-10-05 | 北京小米移动软件有限公司 | Information domain determination method and apparatus, information domain indication method and apparatus, communication apparatus, and storage medium |
| WO2024027656A1 (en) * | 2022-08-03 | 2024-02-08 | 大唐移动通信设备有限公司 | Method for determining frequency-domain position of pdcch candidate, and terminal |
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