CN102377543A - Transmission method of response information of hybrid automatic repeat request - Google Patents
Transmission method of response information of hybrid automatic repeat request Download PDFInfo
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- CN102377543A CN102377543A CN201010248770XA CN201010248770A CN102377543A CN 102377543 A CN102377543 A CN 102377543A CN 201010248770X A CN201010248770X A CN 201010248770XA CN 201010248770 A CN201010248770 A CN 201010248770A CN 102377543 A CN102377543 A CN 102377543A
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Abstract
The invention provides a transmission method of response information of a hybrid automatic repeat request, which comprises the steps as follows: A, a receiving end receives downlink control information; and B, the receiving end determines transmission resources for transmitting the response information in accordance with the quantity of member carriers scheduled by the current subframe indicated by the downlink control information. By using the invention, the transmission resources can be reasonably used to transmit response information of a hybrid automatic repeat request.
Description
Technical field
The present invention relates to wireless communication field, particularly mix the transmission method of the response message of automatic repeat requests.
Background technology
The maximum bandwidth of present long evolving system (LTE) is 20 megahertzes, can not satisfy the more demand of high data rate.At present, in order to improve user's transmission rate, the enhancing (LTE-A) of long evolving system has been proposed again on the basis of LTE.Wherein, LTE-A has introduced a plurality of member carriers, and the bandwidth of each member carrier of this introducing and the bandwidth of LTE are compatible.
In LTE-A, the quantity of the member carrier of scheduling also is not equal to the member carrier quantity of high-rise configuration, can be less than the member carrier quantity of configuration as the one of which.Such as, the member carrier quantity of Fig. 1 configuration on the middle and senior level is 4, be respectively member carrier 1 to member carrier 4, and the quantity of the member carrier of base station scheduling is 3, is respectively member carrier 1 to member carrier 3.And the situation of the used transfer resource of response message that mixes automatic repeat requests among the LTE-A to be member carrier quantity according to the high level configuration the equal member carrier quantity of base station scheduling is distributed; This obviously can waste resource; And the power of waste receiving terminal, even bring unnecessary interference also can for adjacent sub-district.
In order to address the above problem; Prior art has proposed a kind of scheme again; Promptly the quantity according to the detected member carrier of receiving terminal decides the transfer resource that response message adopted that mixes automatic repeat requests, mainly is to know through blind check whether each member carrier has been scheduled and scheduled resources and transformat by receiving terminal in this scheme.But, the blind check meeting omission part dispatching command of receiving terminal.Such as, in Fig. 2, the quantity of the member carrier of base station scheduling is 3, be respectively member carrier 1 to member carrier 3, and receiving terminal is 2 through the only detected member carrier quantity of blind check, is respectively member carrier 2 and member carrier 3, promptly member's carrier wave 1 is by omission.This omission will make receiving terminal confirm that the member carrier of detected member carrier and base station actual schedule of up feedback resources institute foundation is inconsistent, makes the response message that mixes automatic repeat requests can not utilize rational transmission resources for transmitting.
Summary of the invention
The invention provides the transmission method of the response message that mixes automatic repeat requests, so that reasonably use transmission resources for transmitting to mix the response message of automatic repeat requests.
Technical scheme provided by the invention comprises:
A kind of transmission method that mixes the response message of automatic repeat requests comprises:
A, receiving terminal receives Downlink Control Information;
B, the quantity of the member carrier of dispatching in the current subframe of receiving terminal according to said Downlink Control Information indication confirms to be used to transmit the transfer resource of said response message.
Preferably, said Downlink Control Information is indicated the quantity of the member carrier of said scheduling through newly-increased information field, redundancy version information or other unnecessary bits.
Preferably, said Downlink Control Information specifically comprises through the quantity of the member carrier of redundancy version information indication scheduling:
When member's carrier wave only transmits a data block, utilize this data block corresponding redundancy information to indicate the quantity of the member carrier of dispatching in the current subframe;
When two data blocks of member's carrier transmission, utilize one of them data block corresponding redundancy information to indicate the quantity of the member carrier of dispatching in the current subframe.Preferably, when two data blocks of member's carrier transmission, if these two data blocks are all correct, wherein any data block corresponding redundancy information then capable of using is indicated the quantity of the member carrier that current subframe dispatches.
Preferably; When two data blocks of member's carrier transmission; If these two equal mistakes of data block have no idea the data demodulates mistake is come with send distinguishing this moment, wherein any data block corresponding redundancy information then capable of using is indicated the quantity of the member carrier that current subframe dispatches.
Preferably; When two data blocks of member's carrier transmission; If one of them data block receives correct, and the another one data block receives mistake, utilizes this moment the correct data block corresponding redundancy information field that receives to indicate the quantity of the member carrier that current subframe dispatches.
Preferably; When two data blocks of member's carrier transmission, if one of them data block is under an embargo, and another data block is not under an embargo; Be normal transmission, utilize this moment not forbidden data block corresponding redundancy information field to indicate the quantity of the member carrier that current subframe dispatches;
Preferably, said newly-increased information field is 2 bits.
Preferably, this method further comprises:
C, receiving terminal obtain the quantity of the member carrier of current subframe scheduling through the number that detects downlink physical control channel;
Said step B comprises:
Whether the member carrier quantity that receiving terminal comparison step C detects is consistent with the member carrier quantity of said Downlink Control Information indication, if indicate member carrier quantity to confirm to be used to transmit the transfer resource of said response message according to the Downlink Control Information that receives; If not, according to the member carrier quantity of configuration, or according to the member carrier quantity of said Downlink Control Information indication, or confirm to be used to transmit the transfer resource of said response message according to the higher value in the member carrier quantity of the member carrier quantity of said Downlink Control Information indication and step C detection.
Preferably, the transfer resource among the said step B comprises:
The resource of the up feedback of the automatic repeat requests of said mixing, the power of employing and at least one in the coded system.
Can find out by above technical scheme; Among the present invention; Utilize the quantity of the member carrier of actual schedule in the current subframe that Downlink Control Information indicates, and the result of the member carrier quantity of actual schedule in the current subframe of the member carrier quantity that relatively detects by receiving terminal and this Downlink Control Information indication, the resource and the power that mix the up feedback of automatic repeat requests adjusted; This can realize reasonably using transmission resources for transmitting to mix the purpose of the response message of automatic repeat requests; The resource and the power that mix the up feedback of automatic repeat requests are effectively utilized, and minimizing is to the interference of adjacent sub-district, and can guarantee the transmission performance fed back.
Description of drawings
Fig. 1 has the scheduling situation sketch map that becomes to have carrier wave now;
Fig. 2 is scheduling, blind check and the omission situation sketch map of existing member carrier;
The basic flow sheet that Fig. 3 provides for the embodiment of the invention;
The redundancy version information indication member carrier quantity sketch map that Fig. 4 provides for the embodiment of the invention;
Fig. 5 mixes automatic repeat requests response message view when transmitting two data blocks for member carrier;
The detail flowchart that Fig. 6 provides for the embodiment of the invention;
The process chart of the transmitting terminal that Fig. 7 provides for the embodiment of the invention;
The process chart of the receiving terminal that Fig. 8 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.
In order to solve the problems of the technologies described above; The invention provides the transmission method of the response message that mixes automatic repeat requests; Through this method; Can make receiving terminal accurately determine the transfer resource that response message adopted that mixes automatic repeat requests, thereby can use rational transmission resources for transmitting to mix the response message of automatic repeat requests.
Method provided by the invention mainly comprises flow process shown in Figure 3, and is as shown in Figure 3, and this flow process can may further comprise the steps:
Step 301, receiving terminal receives Downlink Control Information;
Step 302, the quantity of the member carrier of dispatching in the current subframe of receiving terminal according to said Downlink Control Information indication confirms to be used to transmit the transfer resource of said response message.
Wherein, the transfer resource of confirming in the step 302 is mainly resource, the power of employing and at least one in the coded system of mixing the up feedback of automatic repeat requests.
In embodiments of the present invention, said Downlink Control Information can be indicated the quantity of the member carrier of dispatching in the current subframe through redundancy version information (RV) territory, specifically describes below.
In the prior art; The redundancy version information territory of Downlink Control Information is former to be the redundancy version information that is used for the designation data piece; And in the present invention; Characteristics through to Downlink Control Information are analyzed, and proposition can utilize certain some specific redundancy version information territory to indicate the quantity of the member carrier of dispatching in the current subframe under the situation of the redundancy version information of not impact analysis data block.That is to say; During the quantity of the member carrier that the present invention dispatches in the current subframe in indication; Do not need the extra bit number that in Downlink Control Information, increases; But the redundancy version information territory that utilizes Downlink Control Information itself to comprise indicates, and this has reduced the transfer resource of Downlink Control Information, also can not influence the redundancy version information analysis of available data piece.As for how to indicate, describe one by one below:
When each member carrier only transmits a data block; Because the feedback information of mixing automatic repeat requests this moment has no idea the Data Receiving mistake is come with sending to distinguish; Therefore; This moment, the quantity of the member carrier that current subframe dispatches was indicated in redundancy version information capable of using territory, and concrete indicating means can be as shown in Figure 4.
When each member carrier has two data blocks; Can utilize one of them data block corresponding redundancy information field to indicate the quantity of the member carrier of dispatching in the current subframe, utilize one of them data block corresponding redundancy information field to indicate the situation of the quantity of the member carrier of dispatching in the current subframe specifically to comprise:
If these two data blocks are all correct, wherein any data block corresponding redundancy information field then capable of using is indicated the quantity of the member carrier that current subframe dispatches.Need to prove that the redundancy version information territory of the quantity that is used in reference to the person's of being shown as carrier wave of this moment needs transmitting terminal consistent with the receiving terminal agreement.
If these two equal mistakes of data block; Have no idea this moment the Data Receiving mistake is come with send distinguishing; Wherein any data block corresponding redundancy information field then capable of using is indicated the quantity of the member carrier that current subframe dispatches, and concrete indicating means can be as shown in Figure 4.Need to prove, be used to indicate this moment the redundancy version information territory of the member carrier quantity that current subframe dispatches to need transmitting terminal to arrange consistent with receiving terminal.
If one of them data block receives correct; And the reception mistake of another one data block; Specifically as shown in Figure 5, utilize this moment the correct data block corresponding redundancy information field that receives to indicate the quantity of the member carrier that current subframe dispatches, concrete indicating means is seen Fig. 4.
If one of them data block is under an embargo; And another data block is not under an embargo; Be normal transmission, utilize this moment not forbidden data block corresponding redundancy information field to indicate the quantity of the member carrier that current subframe dispatches, concrete indicating means is seen Fig. 4; And the data block corresponding redundancy information field of forbidding is still indicated the redundancy version information of forbidden data block, and its redundancy version information is 0.
Above content description how specifically to utilize the redundancy version information territory of data block to indicate the method for the quantity of the member carrier of dispatching in the current subframe.
Preferably, as a kind of expansion in the embodiment of the invention, Downlink Control Information also can be indicated the quantity of the member carrier of dispatching in the current subframe through newly-increased information field or other unnecessary bits.Wherein, newly-increased information field size can be 2 bits.Certainly, as a kind of expansion of the embodiment of the invention, but the size of information field can specifically not limit greater than 2 bits here yet.
In above-mentioned steps 302, receiving terminal can directly utilize the quantity of the member carrier of dispatching in the current subframe of Downlink Control Information indication to confirm to be used to transmit the transfer resource of said response message, and this mode is fairly simple.
Referring to Fig. 6, the detail flowchart of the corresponding diagram 3 that Fig. 6 provides for the embodiment of the invention.This flow process is applied to the scene of carrier aggregation scheduling, and as shown in Figure 6, this flow process specifically can comprise following steps:
Here, receiving terminal detects through the blind check mode, specifically comprises: the corresponding downlink physical control channel of member carrier of receiving terminal blind check scheduling; With blind check to the number of downlink physical control channel confirm as the quantity of the member carrier of dispatching in the current subframe.
Here; At transmitting terminal; All indicated the quantity of the member carrier of dispatching in the current subframe in the Downlink Control Information that arbitrary pairing downlink physical control channel of member carrier that is scheduled is carried; Therefore, this step 602 can be through receiving the quantity of arbitrary downlink physical control channel with the member carrier dispatched in the current subframe of obtaining the indication of this Downlink Control Information.
This step 605 is to carry out under the inconsistent situation at step 603 comparative result; Because step 603 comparative result is inconsistent, just represent receiving terminal in step 601 omission downlink physical control channel, but owing to just indicated the quantity of the member carrier of scheduling in the Downlink Control Information; Not indicating which member carrier is scheduled; Therefore, even known omission, can not know that on earth the corresponding downlink physical control channel of which member carrier is by omission.Based on this, a kind of preferred embodiment of the present invention is exactly an above-mentioned steps 605, promptly confirms to be used to transmit the transfer resource of said response message through the quantity of the member carrier of high level configuration according to the base station.
Afterwards, the definite transmission resources for transmitting response message of step 604 promptly capable of using or step 605.This can save the resource of uplink, the transmitting power of receiving terminal, and can reach power saving than prior art, and reduces the purpose to adjacent area interference.
Preferably; A kind of expansion as the embodiment of the invention; In the judged result of above-mentioned steps 603 for not the time; Step 605 is also replaceable to be: the member carrier quantity of directly utilizing step 602 to confirm is the quantity of the member carrier dispatched in the current subframe of Downlink Control Information indication; Higher value in the member carrier quantity that the member carrier quantity of perhaps directly utilizing the indication of said Downlink Control Information and step 601 detect confirms to be used to transmit the transfer resource of said response message, specifically can carry out according to actual conditions, and present embodiment is specifically qualification.
Based on the description of top Fig. 6, describe such as the concrete processing operation at terminal such as base station and receiving terminal in the face of transmitting terminal down.
Referring to Fig. 7, the process chart of the transmitting terminal that Fig. 7 provides for the embodiment of the invention.This flow process is being applied in the LTE-A scene, and as shown in Figure 7 when transmitting terminal need carry out member's carrier dispatching, this flow process can may further comprise the steps:
Step 701 is calculated the quantity at the member carrier of current subframe scheduling.
This step 701 can be calculated according to the dispatching algorithm of existing comparative maturity, repeats no more here.
This step 702 utilizes the method for the redundancy version information territory indication member carrier quantity in the Downlink Control Information to be described in the above.With above-mentioned indicating means as shown in Figure 4 is example, and then this step 702 is specially: if the member carrier quantity that step 701 is calculated is 1 or 5, then make redundancy version information be changed to 00; If the member carrier quantity of calculating is 2; Then make redundancy version information be changed to 01,, then make redundancy version information be changed to 10 if the member carrier quantity of calculating is 3; If the member carrier quantity of calculating is 4, then make redundancy version information be changed to 11.
Need to prove; Unnecessary bit in this step 702 Downlink Control Information also capable of using perhaps utilizes the member carrier quantity of information field indication step 701 calculating that increases newly in the Downlink Control Information, realizes that specifically the principle of the redundancy version information indication member carrier quantity in principle and the Downlink Control Information is similar.
Step 703 generates and sends said Downlink Control Information to receiving terminal.
So far, realized that through above step 701 to step 703 transmitting terminal sends the operation of the Downlink Control Information of the member carrier quantity that is used to indicate current subframe scheduling.
Referring to Fig. 8, the handling process of the receiving terminal that Fig. 8 provides for the embodiment of the invention.This flow process is with the member carrier quantity of the member carrier quantity that compares detection at receiving terminal and Downlink Control Information indication when inconsistent; The transfer resource that utilizes the member carrier quantity of configuration to confirm to be used to transmit said response message is example, and other situation principles are similar.As shown in Figure 8, this flow process can may further comprise the steps:
The downlink physical control channel that step 801, receiving terminal blind check transmitting terminal are sent, with blind check to the number of downlink physical control channel confirm as the number of detected member carrier in the current subframe.
This current subframe is the subframe at detected downlink physical control channel place.
Here, the member carrier quantity of the Downlink Control Information of the member carrier of each scheduling indication is the same, and therefore, this step 802 can receive the quantity that arbitrary downlink physical control channel is determined the member carrier of dispatching in the current subframe.
As for how to confirm member's number of carriers according to indicating means shown in Figure 4, describe below: if the redundancy version information that receives is changed to 00, then the member carrier quantity of expression scheduling is 1 or 5; Usually, when the member carrier quantity of scheduling was 5, the detected member carrier quantity of step 801 was much larger than 1; Therefore, if in the detected member carrier quantity of step 801 greater than 1, and; The redundancy version information that step 802 receives is changed to 00; The member carrier quantity of then representing this redundancy version information indication is 5, but not 1, specifically can be with reference to practical experience.If the redundancy version information that receives is changed to 01; Then the member carrier quantity of expression scheduling is 2, if the redundancy version information that receives is changed to 10, then the member carrier quantity of expression scheduling is 3; If the redundancy version information that receives is changed to 11, then the member carrier quantity of expression scheduling is 4.
Step 805 confirms in the ascending physical signal control channel to mix the resource and the power of the up feedback of automatic repeat requests according to the member carrier quantity of configuration, on the ascending physical signal control channel, sends the response message of the automatic repeat requests of mixing according to the power of confirming.
With Fig. 2 is example, if the member carrier quantity of configuration is 4, is respectively member carrier 1 to 4; The detected member carrier quantity of step 801 is 2, be respectively member carrier 2 to 3, and in fact the quantity of the member carrier of base station scheduling is 3; Be respectively member carrier 1 to member carrier 3, based on this, when implementing step 803; The comparative result of receiving terminal is inconsistent; Be execution in step 805, directly with the member carrier quantity of configuration promptly 5 confirm to mix in the ascending physical signal control channels the up feedback of automatic repeat requests resource and power so that on the ascending physical signal control channel, sends the response message of the automatic repeat requests of mixing according to the power of confirming.
So far, method provided by the invention is described.
Can find out by above technical scheme; Among the present invention; Utilize the quantity of the member carrier of actual schedule in the current subframe that Downlink Control Information indicates, and the member carrier quantity that relatively detects by receiving terminal and the member carrier quantity of this actual schedule, the resource and the power that mix the up feedback of automatic repeat requests adjusted; This can realize reasonably using transmission resources for transmitting to mix the purpose of the response message of automatic repeat requests; The resource and the power that mix the up feedback of automatic repeat requests are effectively utilized, and minimizing is to the interference of adjacent sub-district, and can guarantee the transmission performance fed back.
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. transmission method that mixes the response message of automatic repeat requests is characterized in that this method comprises:
A, receiving terminal receives Downlink Control Information;
B, the quantity of the member carrier of dispatching in the current subframe of receiving terminal according to said Downlink Control Information indication confirms to be used to transmit the transfer resource of said response message.
2. method according to claim 1 is characterized in that, said Downlink Control Information is indicated the quantity of the member carrier of said scheduling through newly-increased information field, redundancy version information territory or other unnecessary bits.
3. method according to claim 2 is characterized in that, said Downlink Control Information specifically comprises through the quantity of the member carrier of redundancy version information territory indication scheduling:
When member's carrier wave only transmits a data block, utilize this data block corresponding redundancy information to indicate the quantity of the member carrier of dispatching in the current subframe;
When two data blocks of member's carrier transmission, utilize one of them data block corresponding redundancy information to indicate the quantity of the member carrier of dispatching in the current subframe.
4. method according to claim 3 is characterized in that,
When two data blocks of member's carrier transmission, utilize a correct data block corresponding redundancy information that receives to indicate the quantity of the member carrier of dispatching in the current subframe.
5. method according to claim 4 is characterized in that,
One receives correctly in two data blocks of transmission, when another receives mistake, utilizes this correct data block corresponding redundancy information that receives to indicate the quantity of the member carrier of dispatching in the current subframe.
6. method according to claim 3 is characterized in that,
When two data blocks of member's carrier transmission, utilize not forbidden data block corresponding redundancy information to indicate the quantity of the member carrier of dispatching in the current subframe.
7. method according to claim 6 is characterized in that,
One is under an embargo in two data blocks of transmission, when another is not under an embargo, utilizes this not forbidden data block corresponding redundancy information to indicate the quantity of the member carrier of dispatching in the current subframe.
8. method according to claim 2 is characterized in that, said newly-increased information field is 2 bits.
9. method according to claim 1 is characterized in that, this method further comprises:
C, receiving terminal detect the quantity of the member carrier of dispatching in the current subframe;
Said step B comprises:
Whether the member carrier quantity that receiving terminal comparison step C detects is consistent with the member carrier quantity of said Downlink Control Information indication; If confirm to be used to transmit the transfer resource of said response message according to the member carrier quantity of the Downlink Control Information indication that receives; If not, according to the member carrier quantity of configuration, or according to the member carrier quantity of said Downlink Control Information indication, or confirm to be used to transmit the transfer resource of said response message according to the higher value in the member carrier quantity of the member carrier quantity of said Downlink Control Information indication and step C detection.
10. according to the arbitrary described method of claim 1 to 9, it is characterized in that the transfer resource among the said step B comprises:
The resource of the up feedback of the automatic repeat requests of said mixing, the power of employing and at least one in the coded system.
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| CN201010248770XA CN102377543A (en) | 2010-08-04 | 2010-08-04 | Transmission method of response information of hybrid automatic repeat request |
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| CN201010248770XA CN102377543A (en) | 2010-08-04 | 2010-08-04 | Transmission method of response information of hybrid automatic repeat request |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015066885A1 (en) * | 2013-11-08 | 2015-05-14 | 华为技术有限公司 | Data transmission method and device, and communication system |
| CN106535335A (en) * | 2015-09-14 | 2017-03-22 | 上海无线通信研究中心 | Downlink control information realization method for optimizing uplink HARQ |
-
2010
- 2010-08-04 CN CN201010248770XA patent/CN102377543A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015066885A1 (en) * | 2013-11-08 | 2015-05-14 | 华为技术有限公司 | Data transmission method and device, and communication system |
| CN105122709A (en) * | 2013-11-08 | 2015-12-02 | 华为技术有限公司 | Data transmission method and device, and communication system |
| CN106535335A (en) * | 2015-09-14 | 2017-03-22 | 上海无线通信研究中心 | Downlink control information realization method for optimizing uplink HARQ |
| CN106535335B (en) * | 2015-09-14 | 2019-11-08 | 上海无线通信研究中心 | A kind of Downlink Control Information implementation method optimizing ascending HARQ |
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Application publication date: 20120314 |