CN102025447A - Error correction method and device applied on misjudgement of mobile terminal ACK (acknowledgement character) signal - Google Patents
Error correction method and device applied on misjudgement of mobile terminal ACK (acknowledgement character) signal Download PDFInfo
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- CN102025447A CN102025447A CN200910190237XA CN200910190237A CN102025447A CN 102025447 A CN102025447 A CN 102025447A CN 200910190237X A CN200910190237X A CN 200910190237XA CN 200910190237 A CN200910190237 A CN 200910190237A CN 102025447 A CN102025447 A CN 102025447A
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Abstract
The embodiment of the invention discloses an error correction method applied on the misjudgement of a mobile terminal ACK (acknowledgement character) signal. The method comprises: after a relay node monitors that an ACK signal is sent to a base station after a mobile terminal correctly decodes information sent by the base station, storing mobile terminal information corresponding to the ACK signal; when the relay node monitors that the base station repeatedly sends the information, comparing the mobile terminal information corresponding to the repeated information with stored mobile terminal information; if same, determining that the base station misjudges the ACK signal returned by the mobile terminal as NACK (negative ACK); and sending another ACK signal to the base station by the relay node. The embodiment of the invention also provides a relay node so as to reduce the waste of base station transmission resource when the base station misjudges ACK sent by UE (User Equipment) or decodes the ACK into NACK.
Description
Technical field
The embodiment of the invention relates to the communications field, particularly relates to a kind of error correction method and device thereof when being applied to the portable terminal ack signal and being judged by accident.
Background technology
In wireless communication system, (User Equipment UE), or is called portable terminal to subscriber equipment, and UE generally adopts powered battery, because the power-on time of battery is limited, so in order to reduce the power consumption of UE, UE generally can adopt some electricity-saving mechanisms.Because UE receives data and sends data procedures is not to carry out continuously always, but the time period that has data transmit-receive is arranged, the time period that has does not have data transmit-receive.In the time period that does not have data transmit-receive,, thereby give the user with better experience the service time of prolongation UE battery if shutter transceiver just can be saved the UE energy loss.
In the prior art, (Discontinuous Reception, DRX) (Hybrid Auto Request, HARQ) operation reduces the power consumption of UE to the automatic request retransmission of the mixing under by discontinuous reception mechanism.
The inventor is in realizing process of the present invention, find that there is following shortcoming at least in prior art: in the prior art, because the quick variation of wireless channel and the influence of communication environment and equipment, ACK (ACKnowledge Character can appear in the descending HARQ operation during the DRX, confirm) to NACK (Not ACKnowledge, do not confirm) mistake, what be that UE sends is ack signal, but the base station can be decoded into this ack signal the NACK signal, when this happens, data retransmission can constantly be attempted in the base station.Because UE can enter resting state after sending ack signal, therefore, UE can not receive the data that the base station retransmits, even UE revives at this moment, but the success because UE has decoded, therefore, can not do any feedback to these data this moment yet, thereby can cause the continuous data retransmission in base station, and then cause the waste of base station end transfer resource.
Summary of the invention
The embodiment of the invention provides a kind of error correction method and device thereof when being applied to the portable terminal ack signal and being judged by accident, to reduce the waste of the transmission resource of base station that causes when the base station is decoded into NACK with the ACK of UE transmission.
According to an aspect of the present invention, provide a kind of error correction method when being applied to the portable terminal ack signal and being judged by accident, described method comprises:
Monitor when being sent to the ack signal of described base station after portable terminal is decoded correctly to the information of base station transmission, preserve described ack signal corresponding mobile terminal information;
Monitor described base station when repeating to send described information, the information corresponding mobile terminal information of described repetition and the information of mobile terminal of described preservation are compared;
If identical, determine that then described base station is NACK with the ack signal erroneous judgement that described portable terminal returns;
Send another ack signal to described base station.
According to a further aspect in the invention, also provide a kind of via node, the error correction that described via node is applied to the portable terminal ack signal when being judged by accident, described via node comprises:
Monitoring unit is used for monitored base stations and is sent to the information of portable terminal and described portable terminal and described information is decoded is sent to the ack signal of described base station after correct;
Memory cell is used for monitoring described portable terminal when being sent to the ack signal of described base station when described monitoring unit, preserves described ack signal corresponding mobile terminal information;
Comparing unit is used for monitoring described base station when repeating to send described information when definite described monitoring unit, and the information corresponding mobile terminal information of described repetition and the information of mobile terminal of described preservation are compared;
Transmitting element is used for sending another ack signal to described base station when described comparing unit determines that the ack signal erroneous judgement described portable terminal returned described base station is for NACK.
The technical scheme that the embodiment of the invention provides, when monitoring this base station when repeating to send this information, the information corresponding mobile terminal information of described repetition and the information of mobile terminal of described preservation are compared, if when identical, determine that described base station is NACK with the ack signal erroneous judgement that described portable terminal returns, send ack signal to the base station by RN, thereby allow the base station stop to send the information that repeats, thereby reduce the waste of the transmission resource of base station that the ACK that UE is sent when the base station judges by accident or cause when being decoded into NACK to this UE.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The flow chart of the error correction method of Fig. 1 during for being applied to the UE ack signal and being judged by accident of the embodiment of the invention;
The flow chart of first kind of embodiment of the error correction method when Fig. 2 is judged by accident for being applied to the UE ack signal in the embodiment of the invention;
The specific implementation flow chart of first kind of embodiment of the error correction method when Fig. 3 is judged by accident for being applied to the UE ack signal in the embodiment of the invention;
The flow chart of second kind of embodiment of the error correction method when Fig. 4 is judged by accident for being applied to the UE ack signal in the embodiment of the invention;
The specific implementation flow chart of second kind of embodiment of the error correction method when Fig. 5 is judged by accident for being applied to the UE ack signal in the embodiment of the invention;
The structure chart of the error correction system of Fig. 6 during for being applied to the UE ack signal and being judged by accident of the embodiment of the invention;
Fig. 7 is the structure chart of the via node of the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
In the present embodiment, with LTE (Long Term Evolution, Long Term Evolution) communication system is that example is described explanation, in this system, can by the base station (Evolve Node Basestation, eNB), a plurality of via node (Relay node, RN) and a plurality of user terminal (User equipment, UE), can certainly be referred to as portable terminal.In the present embodiment, three kinds of communication modes are arranged, first kind of mode is: UE can directly communicate with the base station, the second way is: UE also can communicate by letter with RN earlier, and again by RN and base station communication, the third mode is: in the time of UE and base station direct communication, RN monitors with communicating by letter of base station this UE, communication channel quality between UE and base station is bad, or very poor the time, communicating by letter between RN cooperation UE and the base station.In the present embodiment, RN can monitor a plurality of UE.
The flow chart of the error correction method of Fig. 1 during for being applied to the UE ack signal and being judged by accident of the embodiment of the invention.
In the present embodiment, when the base station for the first time when UE sends data, the base station need be dispatched UE according to the channel quality between base station and the UE, and will comprise that the control information of scheduling result is sent to UE, when sending scheduling result, send the data message that comprises downlink data.Therefore, the base station information that sends to UE comprises control information and data message.If after the information decoding mistake of UE with the base station transmission, can send a NACK signal to the base station.In the present embodiment, if learn when UE is not correctly decoded the information that sends for the first time the base station, can send another information once more, promptly for the second time send another information to UE, this another information can comprise the information of transmission for the first time and the redundant information of part, and promptly can there be the information of same section in the information of this another information and transmission for the first time.If the base station can send information after knowing that again UE does not have decoding correct at the information that sends for the second time for the third time, this information that sends for the third time comprises the information and more redundant information that sends for the first time.As long as UE is not correctly decoded, meeting continuous photos and sending messages in base station is till reaching maximum retransmission.That is to say, in the each retransmission processes in base station, can comprise identical retransmission information in the information of the UE that is sent to.In the present embodiment, the via node of monitoring UE can monitor control information and the data message that the base station sends to this UE.The ID and the HARQ process I D that can comprise in the present embodiment, the UE of needs scheduling in this scheduling result.
In the present embodiment, step S 100, monitor the base station when being sent to the information of UE, preserve this information.In the present embodiment, this information comprises control information and data message.
In the present embodiment, when UE receives the information of base station transmission, will comprise that the data message of downlink data is decoded, after UE was correctly decoded this information, meeting feeding back ACK signal was to the base station.In the present embodiment, if UE does not receive other data again after being correctly decoded, and that UE can carry out resting state, no longer receives data.
Step S102 monitors UE when this information decoding is sent to the ack signal of base station after correct, preserves this ack signal corresponding mobile terminal information.In the present embodiment, information of mobile terminal comprises portable terminal ID (Identifier, identifier) and HARQ process ID or HARQ process number.
Step S104 monitors this base station when repeating to send this information, determines that the ack signal whether this base station is returned this UE judges into NACK by accident.Also can be understood as, determine that the ack signal whether this base station is returned this UE is decoded into NACK.Need to prove that behind the execution of step S102, ability execution in step S104 has certain time interval between the two.In the present embodiment, the information that the current described base station that monitors can be sent compare with the information that the preceding described base station that once monitors sends, and as if identical, can determine that then described base station repeats to send described information.When definite described base station repeats to send described information, the information corresponding mobile terminal information of described repetition and the information of mobile terminal of described preservation are compared, promptly current ID and the HARQ process ID that monitors the UE in the information that this base station sends can be compared with the ID that returns the corresponding UE of ack signal and the HARQ process ID of preservation, if it is identical, illustrate that the base station sends this information that repeats to same UE, and the ack signal that definite UE has returned this information is to the base station, and the base station is with this ack signal erroneous judgement or be decoded into NACK.
Certainly, also the current ID that monitors the UE in the information that this base station sends can be compared with the ID that returns the corresponding UE of ack signal of preservation, also the current HARQ process ID that monitors in the information that this base station sends can be compared with the corresponding HARQ process ID of ack signal that returns of preservation, if it is identical, illustrate that then the base station sends this information that repeats to same UE, and the ack signal that definite UE has returned this information is to the base station, and the base station is with this ack signal erroneous judgement or be decoded into NACK.
Step S106, when determining the ack signal erroneous judgement that this UE is returned in the base station or being decoded into NACK, another ack signal that sends this information is to the base station.In the present embodiment, because RN sends the ack signal of this information to the base station.Because the communication channel quality between RN and the base station is better and stable, therefore, when the ack signal that this UE is returned when RN discovery base station is decoded into NACK, the ack signal that sends this information is to the base station, can guarantee the base station can with ack signal correct be decoded into ack signal, thereby allow the base station stop to send the information that repeats with this UE.
The technical scheme that provides at present embodiment, when monitoring UE when this information decoding is sent to the ack signal of base station after correct, preserve this ack signal corresponding mobile terminal ID and HARQ process ID, and when monitoring this information of this base station transmission repetition, when determining that ACK that the base station sends UE is decoded into NACK, send ack signal to the base station by RN, thereby allow the base station stop to send the information that repeats to this UE, thereby reduce the waste of the transmission resource of base station that the ACK that UE is sent when the base station judges by accident or cause when being decoded into NACK, can make the base station save the corresponding frequency spectrum resource, improve spectrum efficiency.
The flow chart of first kind of embodiment of the error correction method when Fig. 2 is judged by accident for being applied to the UE ack signal in the embodiment of the invention.
Step S200, the base station sends information by down channel to UE.
Step S202, the RN that monitors this UE monitor the base station when being sent to the information of this UE, preserve this information.
Step S204 monitors this UE when this information decoding is sent to the ACK of base station after correct, preserves ID and the HARQ process ID of the UE of this ACK correspondence;
In the present embodiment, RN also can be sent to the information of this UE to the base station of preserving and decode, step S206, and RN sends the ACK letter to the base station to the correct back of the information decoding of this preservation.In the present embodiment, RN sends ack signal to the base station, and is correct to illustrate that this RN receives, and it is correct to decode.Certainly, this step can be carried out after step S204, also can step S202 after, carry out before the step S204.This step does not have sequence limit.
Step S208 monitors this base station when repeating to send this information, determines that the ack signal whether this base station is returned this UE judges into NACK by accident.Also can be understood as and determine that the ack signal whether this base station is returned this UE is decoded into NACK.
In the present embodiment, the information that information that the current described base station that monitors can be sent and the preceding described base station that once monitors send compares, when if the information that the current described base station that monitors sends all comprises identical retransmission information with the information of the preceding described base station transmission that once monitors, can determine that then this base station repeats to send this information.When this information is repeated to have sent in definite this base station, current ID and the HARQ process ID that monitors the UE in the information that this base station sends can be compared with the ID that returns the corresponding UE of ack signal and the HARQ process ID of preservation, if it is identical, illustrate that the base station sends this information that repeats to same UE, and the ack signal that definite UE has returned this information is to the base station, and the base station is with this ack signal erroneous judgement or be decoded into NACK.Also can be understood as, determine that the base station sends the information that repeats to the UE of the ACK that returns this information.
Certainly, also the current ID that monitors the UE in the information that this base station sends can be compared with the ID that returns the corresponding UE of ack signal of preservation, also the current HARQ process ID that monitors in the information that this base station sends can be compared with the corresponding HARQ process ID of ack signal that returns of preservation, if it is identical, illustrate that then the base station sends this information that repeats to same UE, and the ack signal that definite UE has returned this information is to the base station, and the base station is with this ack signal erroneous judgement or be decoded into NACK.
Step S210, when determining the ack signal erroneous judgement that this UE is returned in the base station or being decoded into NACK, another ack signal that sends this information is to the base station.In the present embodiment, because RN sends the ack signal of this information to the base station.
The specific implementation flow chart of first kind of embodiment of the error correction method when Fig. 3 is judged by accident for being applied to the UE ack signal in the embodiment of the invention.
As shown in Figure 3, in the 0th moment, the base station sends information by down channel to UE.The UE that is in wake states receives and decodes.At this moment, the RN that monitors this UE can monitor the information that the base station sends to UE, and decoding.
After if UE decoding is correct, the 4th constantly to base station feedback ACK, at this moment, RN can monitor the ACK of this UE to base station feedback, and writes down ID and the HARQ process ID of the UE of this ACK correspondence.
After if RN decoding is correct, can be the 5th constantly to base station feedback ACK, certainly, also can be at other feeding back ACK constantly.
The base station is at the 4th ack signal that constantly receives the UE feedback and since between channel quality very poor, will cause the ack signal of base station with the UE feedback that receives, judge or be decoded into NACK by accident, the base station can start constantly the 8th and retransmits, and sends the information that repeats to this UE.
If UE constantly is in resting state the 8th, then UE does not receive this information; If UE handles wake states, when receiving this information, UE finds the information of this information for retransmitting, and then UE can abandon, or does not process, and also can not reply ACK.In the 8th moment, RN also can monitor the information that the base station sends, and when determining that this information is repeated to send in the base station, will determine that the ack signal whether this base station is returned this UE is decoded into NACK.When RN determines that ack signal that this UE is returned in the base station is decoded into NACK, constantly replace UE to send ACK the 12nd, so that the base station stops to send the information that repeats to this UE to the base station.
Certainly, more than be a kind of process of specific implementation, the wherein related transmission or the time of reception be a kind of execution mode, because the time that sends can be adjusted, therefore, the transmission or the time of reception are without limits.
The flow chart of second kind of embodiment of the error correction method when Fig. 4 is judged by accident for being applied to the UE ack signal in the embodiment of the invention.
Step S400, the base station sends information by down channel to UE.
Step S402, the RN that monitors this UE monitor the base station when being sent to the information of this UE, preserve this information.
Step S404 monitors this UE when being sent to the NACK of base station after to this information decoding mistake, preserves this ACK corresponding mobile terminal information.In the present embodiment, information of mobile terminal comprises ID and the HARQ process ID of UE.When the base station receives the NACK of UE transmission, can retransmit this information to UE.
Step S406, RN sends the ACK letter to the base station to the correct back of the information decoding of this preservation.
Step S408 monitors this base station and repeats to send this information to the UE that sends the NACK signal.
In the present embodiment, the UE that sends the NACK signal receives the base station when repeating to send this information, and this information is decoded, if decoding is correct, then returns ack signal to the base station.
Step S410 monitors UE when this information decoding is sent to the ACK of base station after correct, preserves ID and the HARQ process ID of the UE of this ACK correspondence.
Step S412 monitors this base station when repeating once more to send this information, determines that the ack signal whether this base station is returned this UE is decoded into NACK.In the present embodiment, can be understood as, when RN monitors after UE sends the ACK of this information,, need to determine that the ack signal whether this base station is returned this UE is decoded into NACK if monitor the base station when sending this information of repetition once more.
In the present embodiment, the information that information that the current described base station that monitors can be sent and the preceding described base station that once monitors send compares, if when the information that the current described base station that monitors sends all comprises identical retransmission information with the information that the preceding described base station that once monitors sends, can determine that then this base station has sent the information that repeats.When determining that this base station has sent the information that repeats, current ID and the HARQ process ID that monitors the UE in the information that this base station sends can be compared with the I D that returns the corresponding UE of ack signal and the HARQ process ID of preservation, if it is identical, illustrate that the base station sends this information that repeats to same UE, and the ack signal that definite UE has returned this information is to the base station, and the base station is decoded into NACK with this ack signal.Also can be understood as, determine that the base station sends the information that repeats to the UE of the ACK that returns this information.
Certainly, also the current ID that monitors the UE in the information that this base station sends can be compared with the ID that returns the corresponding UE of ack signal of preservation, also the current HARQ process ID that monitors in the information that this base station sends can be compared with the corresponding HARQ process ID of ack signal that returns of preservation, if it is identical, illustrate that then the base station sends this information that repeats to same UE, and the ack signal that definite UE has returned this information is to the base station, and the base station is decoded into NACK with this ack signal.
Step S414, when the ack signal that this UE is returned when definite base station was decoded into NACK, the ack signal that sends this information was to the base station.In the present embodiment, send the ack signal of this information to the base station by RN.
The specific implementation flow chart of second kind of embodiment of the error correction method when Fig. 5 is judged by accident for being applied to the UE ack signal in the embodiment of the invention.
As shown in Figure 5, in the 0th moment, the base station sends information by down channel to UE.The UE that is in wake states receives and decodes.At this moment, the RN that monitors this UE can monitor the information that the base station sends to UE, and decoding.
If behind the UE decoding error, the 4th constantly to base station feedback NACK, at this moment, RN can monitor the NACK of this UE to base station feedback, and writes down ID and the HARQ process ID of the UE of this ACK correspondence.
After if RN decoding is correct, can be the 5th constantly to base station feedback ACK, certainly, also can be at other feeding back ACK constantly.
The base station is after the 4th moment received the NACK signal of UE feedback, and the base station can start re-transmission constantly the 8th, and the information that transmission repeats is to this UE.
After if UE decoding is correct, the 12nd constantly to base station feedback ACK, at this moment, RN can monitor the ACK of this UE to base station feedback, and writes down ID and the HARQ process ID of the UE of this ACK correspondence.
The base station is at the 12nd ack signal that constantly receives the UE feedback and since between channel quality very poor, will cause the ack signal of base station with the UE feedback that receives, be decoded into NACK, the base station can start constantly the 16th and retransmits, and sends the information that repeats to this UE.
If UE constantly is in resting state the 16th, then UE does not receive this information; If UE handles wake states, when receiving this information, UE finds the information of this information for retransmitting, and then UE can abandon, or does not process, and also can not reply ACK.In the 16th moment, RN also can monitor the information that the base station sends, and when determining that the base station sends the information of repetition once more, will determine that the ack signal whether this base station is returned this UE is decoded into NACK.When RN determines that ack signal that this UE is returned in the base station is decoded into NACK, constantly replace UE to send ACK the 20th, so that the base station stops to send the information that repeats to this UE to the base station.
Certainly, more than be a kind of process of specific implementation, the wherein related transmission or the time of reception be a kind of execution mode, because the time that sends can be adjusted, therefore, the transmission or the time of reception are without limits.
The technical scheme that provides at present embodiment, when monitoring UE when this information decoding is sent to the ack signal of base station after correct, preserve this ack signal corresponding mobile terminal ID and HARQ process ID, and when monitoring this information of this base station transmission repetition, when determining that ACK that the base station sends UE is decoded into NACK, send ack signal to the base station by RN, thereby allow the base station stop to send the information that repeats to this UE, reduce the waste of the transmission resource of base station that causes when the ACK that UE is sent when the base station is decoded into NACK, can make the base station save the corresponding frequency spectrum resource, improve spectrum efficiency.
The structure chart of the error correction system of Fig. 6 during for being applied to the UE ack signal and being judged by accident of the embodiment of the invention.In the present embodiment, error correction system comprises base station 5, portable terminal 6 and via node 7, portable terminal 6 can directly communicate with base station 5, portable terminal 6 also can be communicated by letter with via node 7 earlier, again by via node 7 and base station communication, when portable terminal 6 also can be with base station 8 direct communications, 7 pairs of these portable terminals 6 of via node were monitored with communicating by letter of base station 5.
Fig. 7 is the structure chart of the via node of the embodiment of the invention, the error correction when being applied to the UE ack signal and being judged by accident.In the present embodiment, via node 7 comprises monitoring unit 70, decoding unit 71, memory cell 72, comparing unit 73 and transmitting element 74.
In the present embodiment, when the base station need be when UE sends data, the base station need be dispatched UE according to the channel quality between base station and the UE, and will comprise that the control information of scheduling result is sent to UE, when sending scheduling result, send the data message that comprises downlink data.Therefore, the base station information that sends to UE comprises control information and data message.In the present embodiment, the via node of monitoring UE can monitor control information and the data message that UE sends to this UE.The ID and the HARQ process ID that can comprise in the present embodiment, the UE of needs scheduling in this scheduling result.
In the present embodiment, monitoring unit 70 is used to monitor and receive the information that the base station is sent to UE.Memory cell 72 is used to preserve the information that base station that monitoring unit 70 receives is sent to UE.Decoding unit 71 is used for the information that base station to receiving element 70 monitoring is sent to UE and decodes.Transmitting element 74 is used for after 71 pairs of these information decodings of decoding unit are correct, sends ack signal to the base station, and is correct to inform that base station via node 7 receives, and it is correct to decode.
Monitoring unit 70 also is used to monitor and receive UE is sent to the base station after correct to this information decoding ack signal.Memory cell 72 also is used for monitoring UE when this information decoding is sent to the ack signal of base station after correct when monitoring unit 70, preserves ID and the HARQ process ID of the UE of this ack signal correspondence.
If monitoring unit 70 monitors the base station when sending to the information of UE once more, comparing unit 73 also is used for the current information that monitors information that this base station sends and preceding memory cell 72 preservations when once monitoring of monitoring unit 70 is compared, when if the information that the current described base station that monitors sends comprises identical retransmission information with the information of the preceding preservation that once monitors, determine that this base station has sent the information that repeats.Comparing unit 73 also is used for when this information is repeated to send in definite this base station, determines the ack signal erroneous judgement of whether this UE being returned this base station or is decoded into NACK.In the present embodiment, current ID and the HARQ process ID that monitors the UE in the information that this base station sends can be compared with the ID that returns the corresponding UE of ack signal and the HARQ process ID of preservation, if it is identical, illustrate that the base station sends this information that repeats to same UE, and the ack signal that definite UE has returned this information is to the base station, and the base station is with this ack signal erroneous judgement or be decoded into NACK.
Certainly, also the current ID that monitors the UE in the information that this base station sends can be compared with the ID that returns the corresponding UE of ack signal of preservation, also the current HARQ process ID that monitors in the information that this base station sends can be compared with the corresponding HARQ process ID of ack signal that returns of preservation, if it is identical, illustrate that then the base station sends this information that repeats to same UE, and the ack signal that definite UE has returned this information is to the base station, and the base station is with this ack signal erroneous judgement or be decoded into NACK.
Transmitting element 74 also is used for when the ack signal that this UE is returned in comparing unit 73 definite base stations is judged by accident or is decoded into NACK, and the ack signal that sends this information is to the base station.In the present embodiment, because RN sends the ack signal of this information to the base station.Because the communication channel quality between RN and the base station is better and stable, therefore, when RN finds the ack signal erroneous judgement that this UE is returned in the base station or is decoded into NACK, the ack signal that sends this information is to the base station, can guarantee the base station can with ack signal correct be decoded into ack signal, thereby allow the base station stop to send the information that repeats with this UE.
The technical scheme that provides at present embodiment, when monitoring UE when this information decoding is sent to the ack signal of base station after correct, preserve this ack signal corresponding mobile terminal ID and HARQ process ID, and when monitoring this information of this base station transmission repetition, when determining that ACK that the base station sends UE is decoded into NACK, send ack signal to the base station by RN, thereby allow the base station stop to send the information that repeats to this UE, thereby reduce the waste of the transmission resource of base station that causes when the ACK that UE is sent when the base station is decoded into NACK, can make the base station save the corresponding frequency spectrum resource, improve spectrum efficiency.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method, be to instruct relevant hardware to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random AccessMemory, RAM) etc.
It should be noted that at last: above embodiment is only in order to technical scheme of the present invention to be described but not limit it, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that: it still can make amendment or be equal to replacement technical scheme of the present invention, and these modifications or be equal to replacement and also can not make amended technical scheme break away from the spirit and scope of technical solution of the present invention.
Claims (9)
1. error correction method when being applied to the portable terminal ack signal and being judged by accident is characterized in that described method comprises:
Via node monitors when being sent to the ack signal of described base station after portable terminal is decoded correctly to the information of base station transmission, preserves described ack signal corresponding mobile terminal information;
Described via node monitors described base station when repeating to send described information, and the information corresponding mobile terminal information of described repetition and the information of mobile terminal of described preservation are compared;
If the information corresponding mobile terminal information of described repetition is identical with the information of mobile terminal of described preservation, determine that then described base station is NACK with the ack signal erroneous judgement that described portable terminal returns;
Described via node sends another ack signal to described base station.
2. method according to claim 1 is characterized in that, described ack signal corresponding mobile terminal information comprises mobile terminal identifier and mixes automatic request retransmission identifier.
3. method according to claim 2 is characterized in that, described information corresponding mobile terminal information and the step that compares of the information of mobile terminal of described preservation with described repetition comprises:
The information corresponding mobile terminal identifier of described repetition and the mobile terminal identifier of described preservation are compared; Or
The automatic request retransmission identifier of mixing of the information corresponding mobile terminal of described repetition is compared with the automatic request retransmission identifier that mixes of the portable terminal of described preservation;
Or with the information corresponding mobile terminal identifier of described repetition and the mobile terminal identifier that mixes automatic request retransmission identifier and described preservation with mix automatic request retransmission identifier and compare.
4. method according to claim 1 is characterized in that, describedly monitors described base station and repeats to send the step of described information and comprise:
The information of the current described base station transmission that monitors and the information of the preceding described base station transmission that once monitors are compared;
When if the information that the current described base station that monitors sends all comprises identical retransmission information with the information of the preceding described base station transmission that once monitors, determine that described base station repeats to send described information.
5. a via node is characterized in that, the error correction that described via node is applied to the portable terminal ack signal when being judged by accident, and described via node comprises:
Monitoring unit is used for monitored base stations and is sent to the information of portable terminal and described portable terminal and described information is decoded is sent to the ack signal of described base station after correct;
Memory cell is used for monitoring described portable terminal when being sent to the ack signal of described base station when described monitoring unit, preserves described ack signal corresponding mobile terminal information;
Comparing unit is used for monitoring described base station when repeating to send described information when definite described monitoring unit, and the information corresponding mobile terminal information of described repetition and the information of mobile terminal of described preservation are compared;
Transmitting element is used for sending another ack signal to described base station when described comparing unit determines that the ack signal erroneous judgement described portable terminal returned described base station is for NACK.
6. via node according to claim 5 is characterized in that, described ack signal corresponding mobile terminal information comprises mobile terminal identifier and mixes automatic request retransmission identifier.
7. via node according to claim 6 is characterized in that, described comparing unit also is used for the information corresponding mobile terminal identifier of described repetition and the mobile terminal identifier of described preservation are compared; Or the automatic request retransmission identifier of mixing of the information corresponding mobile terminal of described repetition compared with the automatic request retransmission identifier that mixes of the portable terminal of described preservation; Or with the information corresponding mobile terminal identifier of described repetition and the mobile terminal identifier that mixes automatic request retransmission identifier and described preservation with mix automatic request retransmission identifier and compare.
8. via node according to claim 7, it is characterized in that, described comparing unit also is used for mobile terminal identifier when the information corresponding mobile terminal identifier of described repetition and described preservation when identical, or the automatic request retransmission identifier of the mixing of the information corresponding mobile terminal of described repetition is when identical with the automatic request retransmission identifier of the mixing of the portable terminal of described preservation, or the information corresponding mobile terminal identifier of described repetition and the mobile terminal identifier that mixes automatic request retransmission identifier and described preservation and mix automatic request retransmission identifier when identical, determine that described base station is NACK with the ack signal erroneous judgement that described portable terminal returns.
9. via node according to claim 5, it is characterized in that, described comparing unit also is used for comparing when the information of information that the current described base station that monitors of described monitoring unit is sent and the preceding described base station transmission that once monitors, if when the information that the current described base station that monitors sends comprises identical retransmission information with the information that the preceding described base station that once monitors sends, determine that described monitoring unit monitors described base station and repeats to send described information.
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| CN200910190237XA CN102025447A (en) | 2009-09-19 | 2009-09-19 | Error correction method and device applied on misjudgement of mobile terminal ACK (acknowledgement character) signal |
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| CN200910190237XA CN102025447A (en) | 2009-09-19 | 2009-09-19 | Error correction method and device applied on misjudgement of mobile terminal ACK (acknowledgement character) signal |
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| WO2013071888A1 (en) * | 2011-11-18 | 2013-05-23 | 华为技术有限公司 | Method, system and device for controlling wireless resources |
| WO2018024010A1 (en) * | 2016-08-05 | 2018-02-08 | 华为技术有限公司 | Communication method, device and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2013071888A1 (en) * | 2011-11-18 | 2013-05-23 | 华为技术有限公司 | Method, system and device for controlling wireless resources |
| CN103124205A (en) * | 2011-11-18 | 2013-05-29 | 华为技术有限公司 | Method, system and device for controlling wireless resource |
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| US10756850B2 (en) | 2016-08-05 | 2020-08-25 | Huawei Technologies Co., Ltd. | Communication method, apparatus, and system |
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