CN101562511B - Method and system for acquiring hybrid automatic repeat request (HARQ) number - Google Patents
Method and system for acquiring hybrid automatic repeat request (HARQ) number Download PDFInfo
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- CN101562511B CN101562511B CN2008101041200A CN200810104120A CN101562511B CN 101562511 B CN101562511 B CN 101562511B CN 2008101041200 A CN2008101041200 A CN 2008101041200A CN 200810104120 A CN200810104120 A CN 200810104120A CN 101562511 B CN101562511 B CN 101562511B
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Abstract
The invention discloses a method for acquiring a hybrid automatic repeat request (HARQ) Process ID, which is applicable to an operation proposal of time division duplex high-speed share control channel (TDD HS-SCCH) less. The method comprises the following steps: the corresponding relation of high-speed physical downlink shared channel (HS-PDSCH) first transmission and HARQ Process ID is set in user equipment (UE) and a base station Node B; the Node B acquires the HARQ Process ID which corresponds to the current HS-PDSCH first transmission according to the corresponding relation and sends the HS-PDSCH first transmission on the HARQ Process ID; and the UE acquires the HARQ Process ID which corresponds to the current HS-PDSCH first transmission and receives the HS-PDSCH first transmission onthe HARQ Process ID. With the invention, by the TDD HS-SCCH less operation proposal, the UE can acquire the HARQ Process ID which corresponds to the HS-PDSCH first transmission and ensure that the No de B the UE use the same HARQ Process ID to perform the HS-PDSCH first transmission. The invention also discloses a system for acquiring the hybrid automatic retransmitting process number.
Description
Technical field
The present invention relates to mix automatic re-transmission (HARQ, Hybrid Automatic Repeat Request) technology, obtain the method and system of hybrid automatic repeat request (HARQ) number (HARQ Process ID) under particularly a kind of periodic transfer mode in the tdd systems.
Background technology
Divide into groups to connect (FDD CPC continuously at FDD; Frequency Division DuplexContinuous Packet Connectivity) in; High-Speed Shared Control Channel (HS-SCCH; High-Speed Shared Control Channel) is physical control channel in high-speed downlink shared channel (HS-DSCH, the High Speed Downlink Shared channel) transmission, with respect to big data packet transmission; The transport overhead of HS-SCCH is smaller, therefore can improve the utilance of resource.But when transmitting like voice IP low time delay, small packet services such as (VoIP, Voice over Internet Protocol), the transport overhead of HS-SCCH is bigger.
The transport overhead of HS-SCCH when transmitting small packet service in order to reduce; In FDDCPC, introduced a kind of HS-SCCH less operation scheme in the prior art; High-Speed Physical Downlink Shared Channel (HS-PDSCH; High-Speed Physical Downlink Shared Channel) information such as the spreading code of first biography use and transmission block size are disposed by high level, and HS-PDSCH retransmits the information of use through HS-SCCH notifying user equipment (UE, User Equipment).Because first biography of HS-PDSCH need do not used the HS-SCCH channel, therefore can effectively reduce the transport overhead of HS-SCCH.
Divide into groups to connect (TDD CPC continuously at time division duplex; Time Division Duplex ContinuousPacket Connectivity) in; In order to reduce the transport overhead of HS-SCCH; Also introduced the HS-SCCHless operation scheme, information such as spreading code that the first biography of HS-PDSCH is used and transmission block size are configured by high level equally, and HS-PDSCH retransmits the information of using and notified by HS-SCCH.For TDD CPC; At hybrid automatic repeat request (HARQ) (HARQ Process; Hybrid Automatic Repeat RequestProcess) in the process; Can obtain the hybrid automatic repeat request (HARQ) number information such as (HARQ Process ID, Hybrid Automatic Repeat Request ProcessIdentifier) that HS-PDSCH retransmits through HS-SCCH equally.
In FDD CPC; Owing to only there is a HARQ Process; The first biography of all HS-PDSCH all transmitted in same HARQ Process, but at TDD CPC, has a plurality of HARQ Process in the system; Pass for HS-PDSCH is first, i.e. the first biography of HS-PDSCH in can corresponding a plurality of HARQ Process.After introducing TDD HS-SCCH less operation scheme; Because base station (Node B) can not be through the HS-SCCH indication with the first HARQ Process id information notice UE that passes of HS-PDSCH; Thereby, passing for HS-PDSCH is first, UE can not obtain the first HARQ Process ID that passes correspondence of HS-PDSCH.Just under existing TDD HS-SCCH less operation scheme, also do not propose UE and how to obtain the first HARQ Process ID that passes correspondence of HS-PDSCH, realize first biography of HS-PDSCH between UE and the Node B.
Summary of the invention
In view of this; The invention provides the method for a kind of HARQ of obtaining Process ID; Under TDDHS-SCCH less operation scheme, UE can obtain first corresponding HARQProcess ID, the first transport overhead that passes and reduce HS-SCCH of realization HS-PDSCH of passing of HS-PDSCH.
The present invention also provides the system of a kind of HARQ of obtaining Process ID, and under TDD HS-SCCHless operation scheme, UE can obtain first corresponding HARQ Process ID, the first transport overhead that passes and reduce HS-SCCH of realization HS-PDSCH of passing of HS-PDSCH.
A kind of method of obtaining HARQ Process ID provided by the invention is applied to time division duplex High-Speed Shared Control Channel TDD HS-SCCH less operation scheme, and this method comprises:
The corresponding relation of first biography of High-Speed Physical Downlink Shared Channel HS-PDSCH and HARQ Process ID is set in user equipment (UE) and base station node B in advance;
Said Node B obtains the first HARQProcess ID that passes correspondence of current HS-PDSCH according to said corresponding relation, and transmission HS-PDSCH head passes on said HARQ Process ID;
Said UE obtains the first HARQ Process ID that passes correspondence of current HS-PDSCH according to said corresponding relation, and the said HS-PDSCH head of reception passes on said HARQ Process ID.
Preferably, said corresponding relation is first subframe numbers that passes of HS-PDSCH and the mapping relations of HARQ Process ID.
Preferably, the first biography of said HS-PDSCH with the corresponding relation of HARQ Process ID is:
Result that the subframe numbers that HS-PDSCH head is passed through formula
calculates and the corresponding relation of HARQ Process ID;
In the formula; SFN ' is the first subframe numbers that passes of HS-PDSCH; T is for being the HS-PDSCH transmission cycle of unit with the millisecond; N distributes to the professional HARQ Process number of periodic transfer,
expression round numbers computing.
Preferably, said HS-PDSCH head biography with the corresponding relation of HARQ Process ID is: the corresponding relation of the ID of any idle HARQ Process of the first biography of HS-PDSCH and its mapping.
Preferably, said UE and Node B obtain minimum among the ID of all an idle HARQ Process HARQ Process ID as the first biography correspondence of current HS-PDSCH.
Preferably; Said UE and Node B carry out said minimum among the ID of all the idle HARQ Process HARQ Process ID as the first biography correspondence of current HS-PDSCH that obtains after the ID that judges HARQ Process ID idle HARQ Process greater than all that current HS-PDSCH head biography is corresponding.
A kind of system that obtains hybrid automatic repeat request (HARQ) number HARQ Process ID, this system applies comprises in time division duplex High-Speed Shared Control Channel TDD HS-SCCH less operation scheme: user equipment (UE), base station node B, wherein,
The corresponding relation of first biography of High-Speed Physical Downlink Shared Channel HS-PDSCH and HARQ Process ID is set in UE and Node B in advance;
Said Node B obtains the first HARQ Process ID that passes correspondence of current HS-PDSCH according to said corresponding relation, and transmission HS-PDSCH head passes on said HARQ Process ID;
Said UE obtains the first HARQ Process ID that passes correspondence of current HS-PDSCH according to said corresponding relation, and the said HS-PDSCH head of reception passes on said HARQ Process ID.
Visible by technique scheme, a kind of method and system of obtaining HARQ Process ID of the embodiment of the invention are through be provided with the corresponding relation of first biography of HS-PDSCH and HARQ Process ID in advance in UE and Node B; Node B is according to corresponding relation; Obtain the first HARQ Process ID that passes correspondence of current HS-PDSCH; And on this HARQ Process ID, sending the first biography of HS-PDSCH, UE obtains the corresponding HARQ Process ID of the first biography of current HS-PDSCH according to corresponding relation; And on this HARQ Process ID, receive the first biography of HS-PDSCH, thereby realize that HS-PDSCH head passes.Realized under TDD HS-SCCH less operation scheme; UE not only can obtain the first HARQ Process ID that passes correspondence of HS-PDSCH; Make Node B and UE use identical HARQ Process ID to carry out the first biography of HS-PDSCH, can also effectively reduce the transport overhead of HS-SCCH.
Description of drawings
Fig. 1 obtains the first method flow sketch map that passes corresponding HARQ Process ID of HS-PDSCH for the present invention.
Fig. 2 obtains the first structural representation that passes corresponding HARQ Process ID of HS-PDSCH for the present invention.
Fig. 3 is provided with the first schematic flow sheet that passes corresponding HARQ Process ID for idle HARQ Process ID of HS-PDSCH for the present invention.
Fig. 4 obtains the first system configuration sketch map that passes corresponding HARQ Process ID of HS-PDSCH for the present invention.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is done further explain.
The embodiment of the invention is through the corresponding relation of first biography of HS-PDSCH and HARQ Process ID is set in UE and Node B in advance; After Node B sent current HS-PDSCH head biography, UE received the first biography of current HS-PDSCH according to the corresponding relation of first biography of the HS-PDSCH that is provided with in advance and HARQ Process ID on corresponding HARQ Process ID, pass thereby realization HS-PDSCH is first.
Fig. 1 obtains the first method flow sketch map that passes corresponding HARQ Process ID of HS-PDSCH for the present invention.Referring to Fig. 1, this flow process comprises:
Step 101 is provided with the first corresponding relation that passes with HARQProcess ID of HS-PDSCH in advance in UE and base station (Node B);
In this step, under the periodic transfer mode of TDD HS-SCCH less operation scheme, the corresponding relation of first biography of HS-PDSCH and HARQ Process ID can be set in advance, describe respectively below through dual mode.
First kind of mode: be provided for first subframe numbers that passes of HS-PDSCH and the mapping relations of HARQ Process ID.
During periodic transfer; The first biography of HS-PDSCH periodically sent through the HS-PDSCH physical channel; Node B and UE can obtain the corresponding HARQ Process ID of the first subframe numbers that passes of HS-PDSCH through first subframe numbers that passes of the HS-PDSCH that is provided with and the mapping relations of HARQ Process ID.
In the practical application, the HARQ Process ID that obtains can increase and increase periodically in order along with the first subframe numbers that passes of HS-PDSCH.
Specifically, can obtain the first HARQProcess ID that passes correspondence of HS-PDSCH through following formula.
In the formula (1); SFN ' is the first subframe numbers that passes of HS-PDSCH; T representes HS-PDSCH transmission cycle (unit: ms); N distributes to the professional HARQ Process number of periodic transfer,
expression round numbers computing.
Fig. 2 obtains the first structural representation that passes corresponding HARQ Process ID of HS-PDSCH for the present invention.Referring to Fig. 2, be example with the VoIP business, among the figure, hollow rectangle representes to be used for VoIP re-transmission or non-VoIP business, and non-hollow rectangular tables shows that being used for VoIP head passes.Suppose HS-PDSCH transmission cycle T=20ms, N=4, SFN '=1,5,9,13,17 ..., the VoIP head that is used for HS-PDSCH passes, and other subframe numbers (as 2,3,4,5,6 ...) VoIP that is used for HS-PDSCH retransmit or non-VoIP professional.
HARQ Process ID increases progressively and the execution that circulates along with the increase of the first subframe numbers that passes of HS-PDSCH successively, as, SFN '=1, HARQ Process ID=1; SFN '=5, HARQ Process ID=2; When SFN '=13, HARQ Process ID=4 promptly accomplishes a cycle period in the present embodiment.When SFN '=17, HARQ Process ID is from 1 counting again.
In the practical application, those of ordinary skills also can adopt other formula or algorithm to obtain HARQ Process ID, as long as can form first subframe numbers that passes of HS-PDSCH and the mapping relations of HARQ ProcessID, repeat no more at this.
The second way: according to predetermined rule, the first HARQProcess ID that passes correspondence of HS-PDSCH is set among any idle HARQ Process ID, all idle HARQ ProcessID recycle successively.
In this method, all HARQProcess of this UE use synchronously among HARQ Process among the UE and the Node B, and UE follows identical rule with Node B, the first HARQ Process ID that passes correspondence of HS-PDSCH promptly is set gets idle HARQ Process ID.Just pass for HS-PDSCH is first, UE synchronously launches the HARQ Process ID of identical free time automatically with Node B, and all idle HARQ Process ID use successively.
Step 102, after Node B sent HS-PDSCH head biography, UE was according to the corresponding relation of first biography of the HS-PDSCH of setting in advance and HARQ Process ID, and this current HS-PDSCH head of reception passes on the corresponding HARQ Process ID of the first biography of this HS-PDSCH.
In this step, Node B obtains the first HARQ Process ID that passes correspondence of current HS-PDSCH according to corresponding relation, and transmission HS-PDSCH head passes on this HARQ Process ID.
For first kind of mode; HS-PDSCH is first to be passed if Node B is for sending for the first time; For example, in the present embodiment, UE is according to first subframe numbers that passes of the HS-PDSCH that is provided with in advance and the mapping relations of HARQProcess ID; On HARQ Process ID=1, receive first biography of this HS-PDSCH that Node B sends; Pass correctly if this HS-PDSCH that UE receives is first, then obtain next HS-PDSCH head and pass corresponding HARQ Process ID, and receive next HS-PDSCH head biography at this HARQ Process ID according to formula (1).Like this, on the first subframe that passes of the HS-PDSCH of a certain numbering, Node B can use identical HARQ Process ID to carry out the first biography of HS-PDSCH with UE.
For the second way, referring to Fig. 3,
Fig. 3 is provided with the first schematic flow sheet that passes corresponding HARQ Process ID for idle HARQ Process ID of HS-PDSCH for the present invention.This flow process comprises:
In this step, UE and Node B obtain minimum among the ID of all an idle HARQ Process HARQ Process ID as the first biography correspondence of current HS-PDSCH.UE and Node B also can launch the HARQ Process ID of ID maximum among all idle HARQ Process as current HARQ Process ID; Certainly, also can launch any HARQ Process ID among all idle HARQProcess ID as current HARQ Process ID according to certain rule.That is to say; Only need UE and Node B to consult in advance to launch a HARQ Process ID among all idle HARQ Process ID as current HARQ Process ID, and consult the first relation that passes with current HARQ Process ID of subsequently HS-PDSCH and get final product.
In this step; Suppose that current all idle HARQ Process are respectively HARQ Process1, HARQ Process 2, HARQ Process 3 and HARQ Process 4; Then Node B sends the first biography of a HS-PDSCH on HARQ Process 1, and a HS-PDSCH is first to be passed and UE receives on HARQ Process 1.
In this step, Node B sends the first biography of a HS-PDSCH on current HARQ Process ID; UE receives the first biography of a HS-PDSCH on this current HARQ Process ID; After UE receives the first biography of a HS-PDSCH; If confirm that the first biography of HS-PDSCH is correct; Then through high-speed shared information channel (HS-SICH; High Speed Shared Information Channel for HS-DSCH), and starts among all idle HARQ Process ID than the HARQProcess ID of ID big HARQ Process of current HARQProcess as the first biography correspondence of next HS-PDSCH to Node B feeding back ACK.
Node B receives ACK, starts among all idle HARQ Process ID than the HARQProcess ID of ID big HARQ Process of current HARQProcess as the first biography correspondence of next HS-PDSCH.
For instance; After UE receives the first biography of a HS-PDSCH; If confirm that the first biography of HS-PDSCH is correct; Current HARQ Process ID=1, HARQ Process 2, HARQ Process 3 and HARQ Process 4 are idle HARQ Process, then the first current HARQ Process of the HARQ Process ID=ID+1 that passes correspondence of next HS-PDSCH;
The 2nd HS-PDSCH in the UE reception is follow-up is first to be passed; If confirm that the first biography of the 2nd HS-PDSCH that receives is correct; Current HARQ Process ID=2; If HARQ Process 1, HARQ Process 3 and HARQ Process 4 are idle HARQ Process, the current HARQ Process of the HARQ Process ID=ID+1 of correspondence that then next HS-PDSCH is first passes (the 3rd HS-PDSCH is first to be passed).
Node B receives ACK, starts next HS-PDSCH head and passes corresponding HARQ Process ID, and the HARQ Process ID corresponding with the first biography of next HS-PDSCH of UE startup is similar, repeats no more at this.
If the first mistake that passes of the HS-PDSCH that UE receives; Then do not feed back NACK and rest on current HARQ Process ID to Node B; Node B does not receive ACK in the given time; Adopt current HARQ Process ID to carry out HS-PDSCH and retransmit, UE receives HS-PDSCH and retransmits on current HARQ ProcessID.
In the practical application; For first kind of mode; After UE receives the first biography of a HS-PDSCH; If confirm that the first biography of a HS-PDSCH is correct, return ACK information to Node B, UE and NodeB obtain next HS-PDSCH head according to the mapping relations of first subframe numbers that passes of the HS-PDSCH that is provided with and HARQ Process ID and pass.Concrete execution flow process and step 302 are similar, repeat no more at this.
Step 303 after UE confirms that HS-PDSCH is first and passes ID correct and that judge current HARQ Process and be maximum, is chosen the minimum HARQProcess ID of ID among all idle HARQ Process as current HARQ Process ID again.
In this step; After UE receives n first biography of (n can be total HARQ Process) HS-PDSCH, if after the first ID that passes correct and definite current HARQ Process of definite HS-PDSCH is maximum, for instance; In the present embodiment; Suppose UE after receiving the first biography of the 4th HS-PDSCH, if confirm that the first biography of the 4th HS-PDSCH is correct, current HARQ Process ID=4; HARQProcess 1, HARQ Process 2 and HARQ Process 3 are idle HARQ Process; Be the first ID that passes corresponding HARQ Process ID greater than all idle HARQ Process of current HS-PDSCH, the minimum HARQ Process 1 of then next HS-PDSCH is first passes (the 5th HS-PDSCH is first to be passed) corresponding HARQ ProcessID chooses among HARQ Process ID is as current HARQ ProcessID, and circulation according to this.
Fig. 4 obtains the first system configuration sketch map that passes corresponding HARQ Process ID of HS-PDSCH for the present invention.Referring to Fig. 4, this system comprises: UE and Node B, wherein,
Node B be used for obtaining the first HARQ Process ID that passes correspondence of current HS-PDSCH according to HS-PDSCH head biography that is provided with in advance and the corresponding relation of HARQ Process ID, and the current HS-PDSCH head of transmission passes on this HARQProcess ID;
UE is used for obtaining the first HARQ Process ID that passes correspondence of current HS-PDSCH according to the corresponding relation of the HS-PDSCH head biography that is provided with in advance with HARQ Process ID, and first biography of this HS-PDSCH that reception Node B sends on this HARQProcess ID.
In the practical application; The first biography of the HS-PDSCH that is provided with in advance can be first subframe numbers that passes of HS-PDSCH and the mapping relations of HARQ Process ID with the corresponding relation of HARQ Process ID, and HARQ Process ID is along with the subframe numbers of the first biography of HS-PDSCH increases and increases periodically in order and the execution that circulates; Also can the first HARQProcess ID that passes correspondence of HS-PDSCH be set get a HARQ Process ID among the idle HARQ Process ID according to predetermined rule, all idle HARQ Process ID recycle successively.
By above-mentioned visible; The present invention is through be provided with first subframe numbers that passes of HS-PDSCH and the mapping relations of HARQ Process ID in advance in UE and Node B; Obtain the first HARQ Process ID that passes correspondence of HS-PDSCH; UE uses identical HARQ Process ID to carry out the first biography of HS-PDSCH with Node B, and HARQ Process ID recycles successively; Or the first HARQ Process ID who passes among the HARQ Process ID that corresponding HARQProcess ID is the free time of HS-PDSCH is set, all idle HARQ Process ID recycle successively.Under TDD HS-SCCH less operation scheme; UE not only can obtain the first HARQ Process ID that passes correspondence of HS-PDSCH; Make Node B and UE use identical HARQ Process ID to carry out the first biography of HS-PDSCH, can also effectively reduce the transport overhead of HS-SCCH.
More than lift preferred embodiment; The object of the invention, technical scheme and advantage have been carried out further explain, and institute it should be understood that the above is merely preferred embodiment of the present invention; Not in order to restriction the present invention; 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 (6)
1. a method of obtaining hybrid automatic repeat request (HARQ) number HARQ Process ID is characterized in that, is applied to the transmission of time division duplex High-Speed Shared Control Channel and omits TDD HS-SCCH less operation scheme, and this method comprises:
The corresponding relation of first biography of High-Speed Physical Downlink Shared Channel HS-PDSCH and HARQ Process ID is set in user equipment (UE) and base station node B in advance;
Said Node B obtains the first HARQ Process ID that passes correspondence of current HS-PDSCH according to said corresponding relation, and transmission HS-PDSCH head passes on said HARQ Process ID;
Said UE obtains the first HARQ Process ID that passes correspondence of current HS-PDSCH according to said corresponding relation, and the said HS-PDSCH head of reception passes on said HARQ Process ID.
2. the method for claim 1 is characterized in that, said corresponding relation is first subframe numbers that passes of HS-PDSCH and the mapping relations of HARQ Process ID.
3. method as claimed in claim 2 is characterized in that, the first biography of said HS-PDSCH with the corresponding relation of HARQProcess ID is:
Result that the subframe numbers that HS-PDSCH head is passed through formula
calculates and the corresponding relation of HARQ Process ID;
In the formula; SFN ' is the first subframe numbers that passes of HS-PDSCH; T is for being the HS-PDSCH transmission cycle of unit with the millisecond; N distributes to the professional HARQ Process number of periodic transfer,
expression round numbers computing.
4. the method for claim 1 is characterized in that, said HS-PDSCH head passes and the corresponding relation of HARQ Process ID is: the corresponding relation of the ID of any idle HARQ Process of the first biography of HS-PDSCH and its mapping.
5. method as claimed in claim 4 is characterized in that, said UE and Node B obtain minimum among the ID of all an idle HARQ Process HARQ Process ID as the first biography correspondence of current HS-PDSCH.
6. method as claimed in claim 5; It is characterized in that; Said UE and Node B carry out said minimum among the ID of all the idle HARQ Process HARQ Process ID as the first biography correspondence of current HS-PDSCH that obtains after the ID that judges HARQ Process ID idle HARQ Process greater than all that current HS-PDSCH head biography is corresponding.
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| CN103139923A (en) * | 2011-11-30 | 2013-06-05 | 华为技术有限公司 | Method and device for transmission of multiple subframe scheduling signaling |
| US9407302B2 (en) * | 2012-12-03 | 2016-08-02 | Intel Corporation | Communication device, mobile terminal, method for requesting information and method for providing information |
| CN103338097B (en) * | 2013-07-23 | 2016-05-25 | 北京中科晶上科技有限公司 | The method and system of HARQ data processing |
| CN104868981A (en) * | 2014-02-25 | 2015-08-26 | 深圳市中兴微电子技术有限公司 | Method for processing retransmission data in HS-SCCH-less HARQ and device thereof |
| US10333659B2 (en) | 2015-03-13 | 2019-06-25 | Huawei Technologies Co., Ltd. | Data transmission method, device, and system |
| CN107733597A (en) * | 2016-08-11 | 2018-02-23 | 株式会社Ntt都科摩 | Determine the method and base station and user equipment of hybrid automatic repeat request processes number |
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| CN1731771A (en) * | 2005-08-16 | 2006-02-08 | 中兴通讯股份有限公司 | System and method for supporting multi-carrier downlink high-speed data packet access |
| CN101047475A (en) * | 2007-04-30 | 2007-10-03 | 重庆重邮信科（集团）股份有限公司 | Design method for HARQ technical data buffer store and its circuit |
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| CN1731771A (en) * | 2005-08-16 | 2006-02-08 | 中兴通讯股份有限公司 | System and method for supporting multi-carrier downlink high-speed data packet access |
| CN101047475A (en) * | 2007-04-30 | 2007-10-03 | 重庆重邮信科（集团）股份有限公司 | Design method for HARQ technical data buffer store and its circuit |
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