CN103888995A

CN103888995A - Signal retransmission method and equipment

Info

Publication number: CN103888995A
Application number: CN201210554603.7A
Authority: CN
Inventors: 李强; 周明宇
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2012-12-19
Filing date: 2012-12-19
Publication date: 2014-06-25
Anticipated expiration: 2032-12-19
Also published as: CN103888995B

Abstract

The invention provides a signal retransmission method and equipment. The method comprises: a first device receives a data signal sent by a second device according to a first scheduling scheme at a first frequency band, wherein the first scheduling scheme is used for instructing the second device to send the data signal at the first frequency band; when the first device does not receive the data signal sent by the second device correctly, a first error instruction is sent to the second device, wherein the first error instruction is used for instructing the second device to resend the data signal; the first device receives a second reference signal that is sent by the second device according to a second scheduling scheme at a second frequency band; the first device sends scheduling adjusting information that is determined according to the second reference signal to the second device, wherein the scheduling adjusting information is used for instructing the second device to determine a third scheduling scheme for sending the data signal; and the first device receives a data signal that is sent by the second device according to the third scheduling scheme at the second frequency band. With the method, a problem that reliability is reduced during signal retransmission in the prior art can be solved.

Description

The method and apparatus that signal retransmits

Technical field

The present invention relates to the communication technology, relate in particular to the method and apparatus that a kind of signal retransmits.

Background technology

In wireless communication system, in order to promote efficiency of transmission under the prerequisite ensureing transmission reliability, the network equipment can be estimated the quality for the wireless channel of signal transmission conventionally, and determines scheduling scheme according to the quality of wireless channel.If the quality of wireless channel of estimating is better, adopt the scheduling scheme that efficiency of transmission is higher; If the quality of wireless channel of estimating is poor, adopt the lower but common higher scheduling scheme of reliability of efficiency of transmission.

Particularly, in current wireless communication system, conventionally can obtain by the transmission of reference signal (ReferenceSignal, referred to as " RS ") quality information of wireless channel.For example, at Long Term Evolution (Long Term Evolution, referred to as " LTE ") in the downlink transmission process of system, the network equipment is to subscriber equipment (User Equipment, referred to as " UE ") transmitting channel state information reference signal (Channel State Information Reference Signal, referred to as " CSI-RS ") parameter, and send this CSI-RS to this UE; This CSI-RS that UE just receives according to the parameter measurement of this CSI-RS, thus the quality of down channel the scheduling scheme of a definite suggestion obtained, feed back to the network equipment; The network equipment is determined final descending scheduling scheme according to the scheduling scheme of the suggestion of UE feedback.

Again for example, in the uplink process of LTE system, the network equipment sends the parameter of detection reference signal (Sounding Reference Signal, referred to as " SRS ") to UE; After UE receives the parameter of this SRS, just send this SRS according to this parameter; Thereby the network equipment just can obtain by measuring this SRS of UE transmission the quality of up channel, and determines final uplink scheduling scheme.

Thereby obtain the quality of channel by measuring CSI-RS/SRS, this process specifically comprises: suppose that the signal that transmit leg sends is S(CSI-RS or SRS), the channel of signal process is H, the signal that recipient receives is H × S+I+Nd, wherein I represents the interference of suffered other signal of signal transmission, and Nd represents that signal transmits the impact of suffered noise; After recipient receives CSI-RS/SRS, the CSI-RS or the SRS(that send due to the known transmit leg of recipient are S), can estimate the quality of the wireless channel of CSI-RS/SRS process, for example calculate the SINR of the signal receiving.

Current, in wireless communication system, the signal that transmit leg sends can be subject to the interference of the signal that other transmit leg sends, and therefore before transmission, needs measurements interference situation to define to be beneficial to based on disturbed condition and suppresses the scheduling scheme that disturbs; Different owing to measuring the moment from signal transmission time, if the disturbance regime generation acute variation between these two kinds of moment, the channel quality can cause determined scheduling scheme not meet signal transmission time.For example, in a cellular communication system, the signal that the receiver (as base station) of UE1Xiang community 1 correspondence sends can be subject to from the UE2 of community 2 with from the interference of the UE3 of community 3, wherein UE2 is due to the receiver away from community 1, therefore a little less than the interference that UE2 causes, and UE3 is due near the receiver of community 1, the interference that therefore UE3 causes is stronger.If the scheduling scheme of UE1 is determined in community 1 by measuring the signal of UE1 transmission in the 1st moment, and now UE2 has sent signal (signal that UE1 is sent causes interference), and UE3 does not have transmitted signal (signal that can not send UE1 causes interference), the efficiency of transmission that now the scheduling scheme of community 1 definite UE1 is corresponding is conventionally higher; After community 1 is by definite scheduling scheme notice UE1, UE1 just sends upward signal in the 2nd moment according to this scheduling scheme, if and in the 2nd moment, UE3 has sent signal (signal that UE1 is sent causes strong jamming), and UE2 does not have transmitted signal (signal that can not send UE1 causes interference), the channel quality of UE1 in the 2nd moment can not accurately be mated for the definite scheduling scheme of UE1 in advance in community 1, the signal that causes thus UE1 to send likely cannot correctly be received by community 1, i.e. the reliability of signal transmission is lower.

For addressing the above problem, insider has proposed solution described below, for example: in the 0th moment, the network equipment sends dispatch to UE, and instruction UE sends reference signal, the 2nd moment at the first frequency band, UE is according to described dispatch, at the first frequency band to network equipment transmitted signal.The network equipment, according to the signal receiving, is determined scheduling adjustment scheme, and sends scheduling adjustment information in the 2nd moment to UE.Correspondingly adjust the scheduling scheme of signal at the 3rd moment UE according to described scheduling adjustment information, and send data-signal at the first frequency band to the network equipment.By upper, in the 1st moment, all UE in cellular communication system have sent signal, the network equipment can be prepared the interference level in measuring system like this, Signal to Interference plus Noise Ratio (Signal toInterference plus Noise Ratio, referred to as " SINR ") level can dope actual data transfer like this time.But in the 3rd moment, UE can send the data to the network equipment, after the network equipment carries out data receiver, can judge whether correctly to have received this packet, if correctly received, downlink feedback " ACK " information is passed through to UE in base station, finishing receiving of this packet.Otherwise, if this data are failed correctly to receive in base station, downlink feedback " NACK " information is passed through to UE in base station, if UE has received nack message, need to carry out the re-transmission of data, when re-transmission for other communities, still caused interference, therefore above-mentioned solution does not still solve interferometry problem, the reliability of signal transmission cannot ensure.

As shown in Figure 1, in actual applications, the signal that the receiver (as base station) of UE1Xiang community 1 correspondence sends can be subject to, from the UE2 of community 2 with from the interference of the UE3 of community 3, as description of the prior art, finally causing the reliability of signal transmission to reduce.

For this reason, as shown in Figure 2, the technical scheme that the reliability of the solution signal transmission that insider provides reduces.As description of the prior art, in the 0th moment, the network equipment sends dispatch to UE, and instruction UE sends reference signal at the first frequency band, and in the 1st moment, UE, according to described dispatch, sends reference signal at the first frequency band to the network equipment.The network equipment, according to the signal receiving, is determined scheduling adjustment scheme, and sends scheduling adjustment information in the 2nd moment to UE.Correspondingly adjust the scheduling scheme of signal at the 3rd moment UE according to described scheduling adjustment information, and send data-signal at the first frequency band to the network equipment.The benefit of this scheme is, because the UE that sends reference signal in the 1st moment network and the UE that sends data in the 3rd moment network are one group of identical UE, so the network equipment can dope the transmission quality in the 3rd moment comparatively accurately in the measurement result in the 2nd moment, described measurement comprises the measurement of channel quality and the measurement of interference level.But, if subscriber equipment is received nack message, need to carry out the re-transmission of data, if there is a large amount of re-transmission users in system, the interference meeting causing for other communities is very strong, does not consider to retransmit the interference that user forms, so the selection of scheduling scheme is still inaccurate in prior art.

Summary of the invention

In view of this, the method and apparatus that the embodiment of the present invention provides a kind of signal to retransmit, in order to solve the signal problem that reliability reduces in the time retransmitting in prior art.

First aspect, a kind of method that the embodiment of the present invention provides signal to retransmit, comprising:

The first equipment receives the data-signal that the second equipment sends according to the first scheduling scheme on the first frequency band, and described the first scheduling scheme is used to indicate described the second equipment and on the first frequency band, sends described data-signal;

Described the first equipment, in the time of the data-signal that correctly described the second equipment of reception sends, sends the first wrong instruction to described the second equipment, and described the first mistake instruction is used to indicate described the second equipment and resends described data-signal;

Described the first equipment receives described the second equipment and is receiving the second reference signal sending according to the second scheduling scheme after the first wrong instruction on the second frequency band, and described the second scheduling scheme is used to indicate described the second equipment and on the second frequency band, sends described the second reference signal;

Described the first equipment sends the scheduling adjustment information definite according to described the second reference signal to described the second equipment, and described scheduling adjustment information is used to indicate described the second equipment and is identified for sending the 3rd scheduling scheme of described data-signal;

Described the first equipment receives the described data-signal that described the second equipment sends according to described the 3rd scheduling scheme on described the second frequency band

In conjunction with first aspect, in the possible implementation of the first, described the second scheduling scheme is identical with described the first scheduling scheme, and described the second frequency band is identical with described the first frequency band;

Or,

Described the second scheduling scheme is different from described the first scheduling scheme, and described the second frequency band is different from described the first frequency band.

In conjunction with first aspect and above-mentioned possible implementation, in the possible implementation of the second, each in described the first scheduling scheme and described the second scheduling scheme, the 3rd scheduling scheme comprises one or more in following information:

The redundancy versions that power information, modulation system information, code rate information, described the second equipment adopt while sending described data-signal, described the second equipment send described data-signal and whether adopt the information of frequency-hopping mode.

In conjunction with first aspect and above-mentioned possible implementation, in the third possible implementation, described the first equipment receives described the second equipment according to after the described data-signal of described the 3rd scheduling scheme transmission on described the second frequency band, also comprises:

If described the first equipment is the correct described data-signal that receives described the second equipment transmission still, described the first equipment continues to send the described first wrong instruction to described the second equipment, reaches default threshold value until described the first equipment sends the number of times of the described first wrong instruction.

In conjunction with first aspect and above-mentioned possible implementation, in the 4th kind of possible implementation, described the first equipment receives the second equipment according to before the data-signal of the first scheduling scheme transmission on the first frequency band, also comprises:

Described the first equipment receives the first reference signal that described the second equipment sends, and determines described the first scheduling scheme, and notify described the second equipment by described the first scheduling scheme according to described the first reference signal;

If described data-signal comprises multiple independently data blocks, and described the first equipment does not correctly receive any one data block in described data-signal, RI, PMI in the transmission number of plies instruction RI in the second reference signal that described the first equipment receives, the first reference signal that pre-coding matrix instruction PMI receives with described the first equipment are identical;

If described data-signal comprises multiple independently data blocks, and described the first equipment does not correctly receive the partial data piece in described data-signal, RI, PMI in the first reference signal that RI, the PMI in the second reference signal that described the first equipment receives receives from described the first equipment are different.

In conjunction with first aspect and the third possible implementation, in the 5th kind of possible implementation, if described the first equipment is the correct described data-signal that receives described the second equipment transmission still, described the first equipment continues to send the first wrong instruction to described the second equipment, comprising:

Described the first equipment, in the time of the correct data-signal that receives described the second equipment transmission, sends the first wrong instruction of the M time to described the second equipment, the described first wrong instruction is used to indicate described the second equipment and resends described data-signal;

Described the first equipment receives the Q reference signal that described the second equipment sends according to P scheduling scheme on N frequency band;

Described the first equipment sends the scheduling adjustment information definite according to described Q reference signal to described the second equipment, and described scheduling adjustment information is used to indicate described the second equipment and is identified for sending the P+1 scheduling scheme of described data-signal;

Described the first equipment receives the described data-signal that described the second equipment sends according to described P+1 scheduling scheme on described N frequency band;

Wherein, M gets the positive integer that is greater than 1, and P gets the positive integer that is greater than 3, and N, Q get the positive integer that is greater than 2, and described the second equipment retransmits described the data-signal frequency band using and the frequency band that sends before described data-signal and do not repeat.

In conjunction with first aspect and above-mentioned possible implementation, in the 6th kind of possible implementation,

If the first equipment is the network equipment, the second equipment is user equipment (UE), and described the second reference signal is detection reference signal SRS;

Or,

If the first equipment is subscriber equipment, the second equipment is the network equipment, and described the second reference signal is channel condition information-reference signal CSI-RS.

Second aspect, a kind of method that the embodiment of the present invention provides signal to retransmit, comprising:

The second equipment is according to the first scheduling scheme, and on the first frequency band, to the first equipment sending data signal, described the first scheduling scheme is used to indicate described the second equipment and on the first frequency band, sends described data-signal;

Described the second equipment receives the first wrong instruction that the first equipment sends in the time of the correct data-signal that receives described the second equipment transmission, and the described first wrong instruction is used to indicate described the second equipment and resends described data-signal;

The first wrong instruction described in described the second device responds, according to the second scheduling scheme, on the second frequency band, send the second reference signal to described the first equipment, described the second scheduling scheme is used to indicate described the second equipment and on the second frequency band, sends described the second reference signal;

Described the second equipment receives the scheduling adjustment information definite according to described the second reference signal that described the first equipment sends, and is identified for sending the 3rd scheduling scheme of described data-signal according to described scheduling adjustment information;

Described the second equipment, according to described the 3rd scheduling scheme, sends described data-signal to described the first equipment on described the second frequency band.

In conjunction with second aspect, in the possible implementation of the first, described the second scheduling scheme is identical with described the first scheduling scheme, and described the second frequency band is identical with described the first frequency band;

Or,

In conjunction with second aspect and above-mentioned possible implementation, in the possible implementation of the second, each in described the first scheduling scheme and described the second scheduling scheme, described the 3rd scheduling scheme comprises one or more in following information:

In conjunction with second aspect and above-mentioned possible implementation, in the third possible implementation, described the second equipment, according to described the 3rd scheduling scheme, sends after described data-signal to described the first equipment on described the second frequency band, also comprises:

Described the second equipment continues to receive the first wrong instruction that described the first equipment sends in the time of the correct data-signal that receives described the second equipment transmission, reaches default threshold value until receive the number of times of the described first wrong instruction.

In conjunction with second aspect and above-mentioned possible implementation, in the 4th kind of possible implementation, described the second equipment is according to the first scheduling scheme, on the first frequency band, to before the first equipment sending data signal, also comprises:

Described the second equipment sends the first reference signal to described the first equipment, so that described the first equipment is determined the first scheduling scheme that sends described the second equipment according to described the first reference signal;

If described data-signal comprises multiple independently data blocks, and described the first equipment does not correctly receive any one data block in described data-signal, the transmission number of plies instruction RI, the pre-coding matrix instruction PMI that while adopting described the second equipment to send the first reference signal when described the second equipment sends described the second reference signal, adopt;

If described data-signal comprises multiple independently data blocks, and described the first equipment does not correctly receive the partial data piece in described data-signal, when described the second equipment sends described the second reference signal, adopt PI, PMI different while sending the first reference signal from described the second equipment.

In conjunction with second aspect and the third possible implementation, in the 5th kind of possible implementation, described the second equipment continues to receive the first wrong instruction that described the first equipment sends in the time of the correct data-signal that receives described the second equipment transmission, comprising:

Described in described the second device responds, the first wrong instruction according to P scheduling scheme, sends Q reference signal to described the first equipment on N frequency band;

Described the second equipment receives the scheduling adjustment information definite according to described Q reference signal that described the first equipment sends, and is identified for sending the P+1 scheduling scheme of described data-signal according to described scheduling adjustment information;

Described the second equipment, according to described P+1 scheduling scheme, sends described data-signal to described the first equipment on described N frequency band;

Wherein, P gets the positive integer that is greater than 3, and N, Q get the positive integer that is greater than 2, and described the second equipment retransmits described the data-signal frequency band using and the frequency band that sends before described data-signal and do not repeat.

In conjunction with second aspect and above-mentioned possible implementation, in the possible implementation of the second, if the first equipment is the network equipment, the second equipment is user equipment (UE), and described the second reference signal is detection reference signal SRS;

Or,

If the first equipment is user equipment (UE), the second equipment is the network equipment, and described the second reference signal is channel condition information-reference signal CSI-RS.

In conjunction with the third aspect, the embodiment of the present invention provides a kind of communication equipment, comprising:

Receiving element, the data-signal sending according to the first scheduling scheme for receive another equipment on the first frequency band, described the first scheduling scheme is used to indicate described another equipment and on the first frequency band, sends described data-signal;

Transmitting element, when correctly do not receive the data-signal that described another equipment sends at described receiving element, sends the first wrong instruction to described another equipment, and the described first wrong instruction is used to indicate described another equipment and resends described data-signal;

Described receiving element, for send the described first wrong instruction at described transmitting element after, on the second frequency band, receive described another equipment and receiving the second reference signal sending according to the second scheduling scheme after the first wrong instruction, described the second scheduling scheme is used to indicate described the second equipment and on the second frequency band, sends described the second reference signal;

Described transmitting element, for after described receiving element receives described the second reference signal, send the scheduling adjustment information definite according to described the second reference signal to described another equipment, described in described scheduling adjustment information is used to indicate, another equipment is identified for sending the 3rd scheduling scheme of described data-signal;

Described receiving element after sending described scheduling adjustment information at described transmitting element, receives the described data-signal that described another equipment sends according to described the 3rd scheduling scheme on described the second frequency band.

In conjunction with the third aspect, in the possible implementation of the first, described the second scheduling scheme is identical with described the first scheduling scheme, and described the second frequency band is identical with described the first frequency band;

Or,

In conjunction with the third aspect and above-mentioned possible implementation, in the possible implementation of the second, each in described the first scheduling scheme and described the second scheduling scheme, the 3rd scheduling scheme comprises one or more in following information:

The redundancy versions that power information, modulation system information, code rate information, described another equipment adopt while sending described data-signal, described another equipment send described data-signal and whether adopt the information of frequency-hopping mode.

In conjunction with the third aspect and above-mentioned possible implementation, in the third possible implementation, described transmitting element, also in the time that described receiving element does not still correctly receive the described data-signal of described another equipment transmission, continue to send the described first wrong instruction to described another equipment, reach default threshold value until described transmitting element sends the number of times of the described first wrong instruction.

In conjunction with the third aspect and above-mentioned possible implementation, in the 4th kind of possible implementation, described receiving element, also for

On the first frequency band, receive another equipment according to before the data-signal of the first scheduling scheme transmission, also receive the first reference signal that described another equipment sends, determine described the first scheduling scheme according to described the first reference signal, and by described another equipment of described the first scheduling scheme notice;

Comprise multiple independently data blocks at described data-signal, and when described receiving element does not correctly receive any one data block in described data-signal, RI, PMI in the transmission number of plies instruction RI in the second reference signal that described receiving element receives, the first reference signal that pre-coding matrix instruction PMI receives with described receiving element are identical;

Comprise multiple independently data blocks at described data-signal, and when described receiving element does not correctly receive the partial data piece in described data-signal, RI, PMI in the first reference signal that RI, the PMI in the second reference signal that described receiving element receives receives from described receiving element are different.

In conjunction with the third aspect and above-mentioned the third possible implementation, in the 5th kind of possible implementation,

Described transmitting element, also in the time that described receiving element does not still correctly receive the data-signal of described another equipment transmission, send the first wrong instruction of the M time to described another equipment, the described first wrong instruction is used to indicate described another equipment and resends described data-signal;

Described receiving element also, for send the first wrong instruction of the M time at described transmitting element after, receives the Q reference signal that described another equipment sends according to P scheduling scheme on N frequency band;

Described transmitting element, also for after described receiving element receives described Q reference signal, send the scheduling adjustment information definite according to described Q reference signal to described another equipment, described in described scheduling adjustment information is used to indicate, another equipment is identified for sending the P+1 scheduling scheme of described data-signal;

Described receiving element also for after sending described scheduling adjustment information at described transmitting element, receives the described data-signal that described another equipment sends according to described P+1 scheduling scheme on described N frequency band;

Wherein, M gets the positive integer that is greater than 1, and P gets the positive integer that is greater than 3, and N, Q get the positive integer that is greater than 2, and described another equipment retransmits described the data-signal frequency band using and the frequency band that sends before described data-signal and do not repeat.

In conjunction with the third aspect and above-mentioned possible implementation, in the 6th kind of possible implementation, described communication equipment is the network equipment, and described another equipment is user equipment (UE), and described the second reference signal is detection reference signal SRS;

Or,

Described communication equipment is user equipment (UE), and described another equipment is the network equipment, and described the second reference signal is channel condition information-reference signal CSI-RS.

Fourth aspect, the embodiment of the present invention provides a kind of communication equipment, comprising:

Transmitting element, for according to the first scheduling scheme, on the first frequency band, to another equipment sending data signal, described the first scheduling scheme is used to indicate communication equipment and on the first frequency band, sends described data-signal;

Receiving element, for after described transmitting element sends described data-signal, receive the first wrong instruction that described another equipment sends in the time of the correct data-signal that receives described communication equipment transmission, the described first wrong instruction is used to indicate described communication equipment and resends described data-signal;

Described transmitting element, also for receive the described first wrong instruction at described receiving element after, respond the described first wrong instruction, according to the second scheduling scheme, on the second frequency band, send described the second reference signal to described another equipment, described the second scheduling scheme is used to indicate described the second equipment and on the second frequency band, sends described the second reference signal;

Described receiving element, for after described transmitting element sends described the second reference signal, receive the scheduling adjustment information definite according to described the second reference signal that described another equipment sends, and be identified for sending the 3rd scheduling scheme of described data-signal according to described scheduling adjustment information;

Described transmitting element for receive described scheduling adjustment information at described receiving element, and after determining the 3rd scheduling scheme, according to described the 3rd scheduling scheme, sends described data-signal to described another equipment on described the second frequency band.

In conjunction with fourth aspect, in the possible implementation of the first, described the second scheduling scheme is identical with described the first scheduling scheme, and described the second frequency band is identical with described the first frequency band;

Or,

In conjunction with fourth aspect and above-mentioned possible implementation, in the possible implementation of the second, each in described the first scheduling scheme and described the second scheduling scheme, described the 3rd scheduling scheme comprises one or more in following information:

The redundancy versions that power information, modulation system information, code rate information, described communication equipment adopt while sending described data-signal, described communication equipment send described data-signal and whether adopt the information of frequency-hopping mode.

In conjunction with fourth aspect and above-mentioned possible implementation, in the third possible implementation, described receiving element, also receive for continuing the first wrong instruction that described another equipment sends in the time correctly not receiving the data-signal of described communication equipment transmission, reach default threshold value until receive the number of times of described the first mistake instruction.

In conjunction with fourth aspect and above-mentioned possible implementation, in the 4th kind of possible implementation, described transmitting element, also for according to the first scheduling scheme, on the first frequency band to before another equipment sending data signal, send the first reference signal to described another equipment, so that described another equipment is determined the first scheduling scheme that sends described communication equipment according to described the first reference signal;

If described data-signal comprises multiple independently data blocks, and described another equipment does not correctly receive any one data block in described data-signal, the transmission number of plies instruction RI, the pre-coding matrix instruction PMI that while adopting described transmitting element to send the first reference signal when described transmitting element sends described the second reference signal, adopt;

If described data-signal comprises multiple independently data blocks, and described another equipment does not correctly receive the partial data piece in described data-signal, when described transmitting element sends described the second reference signal, adopt PI, PMI different while sending the first reference signal from described transmitting element.

In conjunction with fourth aspect and above-mentioned the third possible implementation, in the 5th kind of possible implementation,

Described transmitting element, also for continuing to receive described another equipment at described receiving element when correct the first wrong instruction sending while receiving the data-signal that described communication equipment sends, respond the described first wrong instruction, according to P scheduling scheme, on N frequency band, send Q reference signal to described another equipment;

Described receiving element, also for after described transmitting element sends described Q reference signal, receive the scheduling adjustment information definite according to described Q reference signal that described another equipment sends, and be identified for sending the P+1 scheduling scheme of described data-signal according to described scheduling adjustment information;

Described transmitting element also for after described receiving element is determined P+1 scheduling scheme, according to described P+1 scheduling scheme, sends described data-signal to described another equipment on described N frequency band;

Wherein, P gets the positive integer that is greater than 3, and N, Q get the positive integer that is greater than 2, and described communication equipment retransmits described the data-signal frequency band using and the frequency band that sends before described data-signal and do not repeat.

In conjunction with fourth aspect and above-mentioned possible implementation, in the 6th kind of possible implementation,

Described communication equipment is user equipment (UE), and described another equipment is the network equipment, and described the second reference signal is detection reference signal SRS;

Or,

Described communication equipment is the network equipment, and described another equipment is user equipment (UE), and described the second reference signal is channel condition information-reference signal CSI-RS.

As shown from the above technical solution, the method and apparatus that the signal of the embodiment of the present invention retransmits, in the time that the first equipment does not correctly receive the data-signal of the second equipment transmission, send the first wrong instruction to the second equipment, the first equipment receives the second reference signal that the second equipment sends according to the second scheduling scheme on the second frequency band, and send the scheduling adjustment information definite according to the second reference signal to the second equipment, make the second equipment determine the 3rd scheduling scheme that sends data-signal, and then first equipment on the second frequency band, receive the second equipment according to the 3rd scheduling scheme send data-signal, can improve thus the reliability of signal transmission, solve the signal problem that reliability reduces in the time retransmitting in prior art.

Brief description of the drawings

In order to be illustrated more clearly in technical scheme of the present invention, to the accompanying drawing of required use in embodiment be briefly described below, apparently: accompanying drawing is the accompanying drawing of some embodiments of the present invention below, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain other accompanying drawing that can realize equally technical solution of the present invention according to these accompanying drawings.

Fig. 1 is application scenarios schematic diagram of the prior art;

Fig. 2 is the application scenarios schematic diagram of signal transmission in prior art;

The schematic flow sheet of the method that the signal that Fig. 3 A to Fig. 3 C provides for one embodiment of the invention retransmits;

The schematic flow sheet of the method that the signal that Fig. 4 A and Fig. 4 B provide for another embodiment of the present invention retransmits;

The schematic flow sheet of the method that the signal that Fig. 5 provides for another embodiment of the present invention retransmits;

The structural representation of the communication equipment that Fig. 6 provides for one embodiment of the invention;

The structural representation of the communication equipment that Fig. 7 provides for another embodiment of the present invention.

Embodiment

For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme of the present invention is clearly and completely described.Obviously, each following embodiment is the embodiment of a part of the present invention.Based on each following embodiment of the present invention, those of ordinary skill in the art are even without making creative work, also can pass through the even whole technical characterictic of equivalent transformation part, can solve the technology of the present invention problem and obtain, realize other embodiment of the technology of the present invention effect, and these conversion and come each embodiment obviously do not depart from scope disclosed in this invention.

The technical scheme of the embodiment of the present invention based on shown in above-mentioned Fig. 2 provides dispatching method accurately in the time that signal retransmits, and while re-transmission to realize signal, reliability does not reduce.

Should understand, the technical scheme of the embodiment of the present invention can be applied to various communication systems, for example: global system for mobile telecommunications (Global System of Mobile communication, referred to as " GSM ") system, code division multiple access (Code Division Multiple Access, referred to as " CDMA ") system, Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multiple Access, referred to as " WCDMA ") system, GPRS (General Packet Radio Service, referred to as " GPRS "), LTE system, LTE Frequency Division Duplexing (FDD) (Frequency Division Duplex, referred to as " FDD ") system, LTE time division duplex (Time Division Duplex, referred to as " TDD "), universal mobile telecommunications system (Universal Mobile Telecommunication System, referred to as " UMTS "), the interconnected inserting of microwave in the whole world (Worldwide Interoperability for MicrowaveAccess, referred to as " WiMAX ") communication system etc.

Will also be understood that, in embodiments of the present invention, UE can be referred to as terminal (Terminal), travelling carriage (Mobile Station, referred to as " MS "), mobile terminal (Mobile Terminal) etc., this subscriber equipment can be through wireless access network (Radio Access Network, referred to as " RAN ") communicate with one or more core net, for example, subscriber equipment can be mobile phone (or being called " honeycomb " phone), there is the computer of mobile terminal etc., for example, subscriber equipment can also be portable, pocket, hand-hold type, built-in computer or vehicle-mounted mobile device, they and wireless access network switched voice and/or data.

In embodiments of the present invention, the network equipment can be base station, access point (Access Point, referred to as " AP "), far-end wireless device (Remote Radio Equipment, referred to as " RRE "), far-end radio port (Remote Radio Head, referred to as " RRH "), far-end radio-cell (Remote Radio Unit, referred to as " RRU ") or via node (Relay Node, referred to as " RN ") etc.Base station can be base station (the Base Transceiver Station in GSM or CDMA, referred to as " BTS "), also can be the base station (NodeB in WCDMA, referred to as " NB "), it can also be the evolved base station (Evolutional Node B, referred to as " ENB or e-NodeB ") in LTE.Should also be understood that in embodiments of the present invention, the network equipment can also be the miscellaneous equipment with scheduling feature, for example, have the UE of scheduling feature etc., and the embodiment of the present invention is not as limit.

For convenience, following embodiment will be taking LTE system, user equipment (UE) as example, and comprises that taking the network equipment base station describes as example, but the present invention is not limited to this.

The schematic flow sheet of the method that the signal that Fig. 3 A shows one embodiment of the invention to be provided retransmits, as shown in Figure 3A, the method that the signal in the present embodiment retransmits is as described below.

301, the first equipment receives the data-signal that the second equipment sends according to the first scheduling scheme on the first frequency band, and described the first scheduling scheme is used to indicate described the second equipment and on the first frequency band, sends described data-signal;

302, the first equipment, in the time of the data-signal that correctly described the second equipment of reception sends, sends the first wrong instruction to described the second equipment, and described the first mistake instruction is used to indicate described the second equipment and resends described data-signal;

303, the first equipment receives described the second equipment and is receiving the second reference signal sending according to the second scheduling scheme after the first wrong instruction on the second frequency band, and described the second scheduling scheme is used to indicate described the second equipment and on the second frequency band, sends described the second reference signal;

304, the first equipment sends the scheduling adjustment information definite according to described the second reference signal to described the second equipment, and described scheduling adjustment information is used to indicate described the second equipment and is identified for sending the 3rd scheduling scheme of described data-signal;

305, the first equipment receives the described data-signal that described the second equipment sends according to described the 3rd scheduling scheme on described the second frequency band.

Realize in scene in the first, the first scheduling scheme in the second scheduling scheme and step 301 in above-mentioned steps 303 can be identical, and the second frequency band in step 303, step 305 can be identical with the first frequency band in step 301.

That is to say, the first equipment, in the time correctly not receiving the data-signal of the second equipment transmission, can adopt the scheme of original signal transmission to carry out the transmission again of data-signal.

For instance, each in the first above-mentioned scheduling scheme, the second scheduling scheme and the 3rd scheduling scheme can comprise one or more in following schedule information:

The information of the redundancy versions that power information, modulation system information, code rate information, described the second equipment adopt while sending described data-signal, described the second equipment sends described data-signal and whether adopts information of frequency-hopping mode etc.

The 3rd scheduling scheme is owing to sending by scheduling adjustment information, and this adjustment information can only comprise adjusted value or the difference of above-mentioned information, instead of a complete schedule information.This adjustment information also can only be adjusted at least part of schedule information in the first scheduling scheme or the second scheduling scheme, and needn't all adjust.

The first scheduling scheme can send to the second equipment by the first equipment before the first equipment sending data signal.

The second scheduling scheme can be carried in the first wrong instruction, notifies to the second equipment, or can be made an appointment by wireless communication protocol by the described first wrong instruction.In the situation that being made an appointment by wireless communication protocol, the first equipment and the second equipment both sides automatically use the second scheduling scheme to transmit the second reference signal according to described agreement after the second equipment sends the first wrong instruction.

In addition, in actual applications, after step 305, the method that above-mentioned signal retransmits also can comprise following not shown step S01:

If described the first equipment of S01 is the correct described data-signal that receives described the second equipment transmission still, described the first equipment continues to send the described first wrong instruction to described the second equipment, the scheme that now, also can send according to original signal is carried out the transmission again of data-signal.

When the number of times that sends described the first wrong instruction at described the first equipment reaches default threshold value, described the first equipment stops continuing to send the described first wrong instruction.

Certainly,, if the first equipment has correctly received the data-signal that the second equipment sends, the method that signal of the present embodiment retransmits, also can comprise following not shown step S02:

S02, the first equipment send the correct reception instruction of described data-signal to described the second equipment.

Alternatively, in conjunction with Fig. 2 for instance, described the first equipment receives the second equipment according to before the data-signal of the first scheduling scheme transmission on the first frequency band, and the method that signal retransmits also comprises not shown step M01:

M01: described the first equipment receives the first reference signal that described the second equipment sends, and determines described the first scheduling scheme, and notify described the second equipment by described the first scheduling scheme according to described the first reference signal;

Thus, in the time that signal retransmits, if described data-signal comprises multiple independently data blocks, and described the first equipment does not correctly receive any one data block in described data-signal, transmission number of plies instruction (Rank Indication in the second reference signal that described the first equipment receives, be called for short RI), RI, PMI in the first reference signal of pre-coding matrix instruction (Precoding Matrix Indication is called for short PMI) and described the first equipment reception be identical;

Realize in scene at the second, the first scheduling scheme in the second scheduling scheme and step 301 in above-mentioned steps 303 can be different, and the second frequency band in step 303, step 305 can be different from the first frequency band in step 301.

That is to say, the first equipment, in the time correctly not receiving the data-signal of the second equipment transmission, can adopt the scheme of new signal transmission to carry out the transmission of data-signal.

Certainly,, realizing in scene of the present embodiment, each in the first scheduling scheme, the second scheduling scheme and the 3rd scheduling scheme comprises one or more in following information:

The first scheduling scheme and the second scheduling scheme have also been indicated respectively the frequency domain resource for sending described data-signal, i.e. the frequency band of the described data-signal of transmission mentioned above.The 3rd scheduling scheme is owing to being to be carried in scheduling adjustment information, and it does not indicate the frequency band that sends described data-signal again.The second equipment receive scheduling adjustment information after naturally understand on described the second frequency band, resend data-signal according to described the 3rd scheduling scheme.

What kind of modulation system the modulation system information that scheduling scheme comprises second equipment of can indicating adopts carry out signal transmission, modulation system comprises the QPSK(quarternary phase-shift keying (QPSK) signal that efficiency is lower), 16 quadrature amplitude modulation (the Quadrature Amplitude Modulation higher with efficiency, referred to as " QAM "), 64QAM etc.

What kind of coded system the code rate information that scheduling scheme comprises second equipment of can indicating adopts, and code rate is high, and communication is high.

The redundancy version information that scheduling scheme comprises can indicate the second equipment after coding completes, send which part coding after data.

The information of the frequency-hopping mode that scheduling scheme comprises can indicate the second equipment in the time sending data, whether data is divided into multiple parts, and the data of every part are sent in different frequencies.

Especially, the first equipment is still correct receives the described data-signal that described the second equipment sends, and the first equipment continues to send the described first wrong instruction to the second equipment, and the frequency band that the second equipment adopts while again transmitting described data-signal at every turn can be different.

For example, can adopt following step R01 to carry out the transmission again of data-signal to step R04:

R01, described the first equipment, in the time of the correct data-signal that receives described the second equipment transmission, send the first wrong instruction of the M time to described the second equipment, the described first wrong instruction is used to indicate described the second equipment and resends described data-signal;

R02, described the first equipment receive the Q reference signal that described the second equipment sends according to P scheduling scheme on N frequency band;

R03, described the first equipment send the scheduling adjustment information definite according to described Q reference signal to described the second equipment, and described scheduling adjustment information is used to indicate described the second equipment and is identified for sending the P+1 scheduling scheme of described data-signal;

R04, described the first equipment receive the described data-signal that described the second equipment sends according to described P+1 scheduling scheme on described N frequency band;

Wherein, M gets the positive integer that is greater than 1, and P gets the positive integer that is greater than 3, and N, Q get the positive integer that is greater than 2, and described the second equipment retransmits described the data-signal frequency band using and the frequency band that sends before described data-signal and do not repeat.If M changes in those steps, P, N, Q change successively.

Said process can be repeatedly, is equivalent to carry out repeatedly transmission again.At every turn again in transmission, the scheduling adjustment information that can redefine, and utilize the scheduling scheme (P+1 scheduling scheme) after the scheduling adjustment information that redefines is adjusted arbitrary scheduling scheme adjustment before.Under can be the with it former scheduling scheme of N frequency band, institute's service band is identical.

The adjusted value of the schedule information in arbitrary the scheduling scheme that arbitrary scheduling adjustment information adopts before can comprising as described above, scheduling adjustment information can only be adjusted the some or multiple schedule informations in a scheduling scheme before, and needn't all adjust whole scheduling scheme.Described adjusted value can be current use schedule information with respect to the difference of schedule information before, instead of an integrity value.

In actual applications, the maximum threshold value that current agreement regulation has signal to retransmit, if sending the number of times of the described first wrong instruction, described the first equipment reaches the maximum threshold value specifying in agreement, described the first equipment stops sending the described first wrong instruction, and the first equipment stops continuing to obtain the incorrect described data-signal receiving.

In addition, in the time that signal retransmits, if described data-signal comprises multiple independently data blocks, and described the first equipment does not correctly receive any one data block in described data-signal, RI, PMI in the first reference signal that RI, the PMI in the second reference signal that described the first equipment receives receives with described the first equipment are identical;

As from the foregoing, the method that the signal of the present embodiment retransmits, in the time that the first equipment does not correctly receive the data-signal of the second equipment transmission, send the first wrong instruction to the second equipment, the first equipment receives the second reference signal that the second equipment sends according to the second scheduling scheme on the second frequency band, and send the scheduling adjustment information definite according to the second reference signal to the second equipment, make the second equipment determine the 3rd scheduling scheme that sends data-signal, and then first equipment on the second frequency band, receive the second equipment according to the 3rd scheduling scheme send data-signal, can improve thus the reliability of signal transmission, solve the signal problem that reliability reduces in the time retransmitting in prior art.

In addition,, in step 303, the second reference signal that the second equipment sends on the second frequency band according to the second scheduling scheme, can be to carry out according to the mode of wireless communication standard protocol acquiescence, or carry out according to the instruction of the first wrong instruction.

Particularly, the first wrong instruction that the first equipment sends to the second equipment can have following several instruction implication:

The first: described first wrong instruction is used to indicate described the second equipment and resends described data-signal, and now, the mode that the second equipment specifies according to agreement sends described data-signal to the first equipment again;

The second: described first wrong instruction is used to indicate described the second equipment and on the first frequency band, resends described data-signal according to the first scheduling scheme;

The the 3rd: described first wrong instruction is used to indicate described the second equipment and on the second frequency band, resends described data-signal according to the scheme that is different from the first scheduling scheme;

Therefore, second scheduling scheme of the present embodiment can be not identical with the first scheduling scheme, and the second scheduling scheme is that the first equipment configures by high-level signaling.Certainly, the second scheduling scheme can be the same with the first scheduling scheme, and like this, both sides' equipment is equivalent to or sends the second reference signal according to the first original scheduling scheme.

The first equipment in above-described embodiment can be the network equipment as base station, and the second equipment can be UE, and the second reference signal in above-mentioned steps 303 and step 304 can be SRS;

Or

The first equipment in above-described embodiment can be UE, and the second equipment can be the network equipment as base station, and the second reference signal in above-mentioned steps 303 and step 304 can be CSI-RS.

Should understand, in current communication system, UE transmission upward signal can be subject to the control of the network equipment, be that first the network equipment sends to UE the control signal that comprises scheduling scheme, for example, in LTE system, base station can send Physical Downlink Control Channel (Physical Downlink Control Channel, referred to as " PDCCH ") signal to UE.After UE receives control signal, send upward signal according to this control signal.For example, in LTE system, control signal comprises one or more in following message: power or power adjustment information etc. that the band information that UE transmitted signal is used, the modulation system adopting and/or code rate information, transmitted signal adopt.

In addition,, if UE sends upward signal by multiple antenna ports, this control signal can also comprise the number of plies of transmitted signal employing, pre-coding matrix or the selected antenna port of transmitted signal etc. that transmitted signal adopts.After UE receives control signal, can carry out chnnel coding to sent data according to code rate; According to modulation system, the data after encoding are modulated; By the sign map that generates after modulation on frequency band; Finally send by corresponding power again.Alternatively, after the symbol obtaining after modulation, can also the sign map after modulation be arrived according to number of plies information to the multilayer in space, then according to pre-coding matrix information, multilayer signal be carried out to precoding, or send on selected antenna port.For simplicity, do not repeat them here.

The schematic flow sheet of the method that the signal that Fig. 3 B shows one embodiment of the invention to be provided retransmits, as shown in Figure 3 B, the method that the signal in the present embodiment retransmits is as described below.

311, the network equipment receives the data-signal that UE sends according to the first scheduling scheme on the first frequency band, and described the first scheduling scheme is used to indicate described UE and on the first frequency band, sends described data-signal;

For instance, the first scheduling scheme in this step can comprise at least one information in following information: power/power adjustment that the frequency band that UE transmitted signal is carried, the modulation scheme that transmitted signal adopts and/or code rate, transmitted signal adopt, the number of plies (the such as order (Rank) in LTE system) that transmitted signal adopts, pre-coding matrix (Precoding Matrix), the selected antenna port of transmitted signal etc. that transmitted signal adopts.Wherein, the combination of modulation system and code rate can be called as Modulation and Coding Scheme (Modulation and Coding Scheme, referred to as " MCS ").

Be understandable that, the network equipment and U E are alternately in order to determine the first scheduling scheme.For instance, as shown in Figure 2, the network equipment sends scheduling scheme to UE, and this scheduling scheme is used to indicate UE and sends data-signal on the first frequency band; And on the first frequency band, receive the first reference signal that described UE sends according to described scheduling scheme, send the scheduling adjustment information definite according to described the first reference signal to described UE, described scheduling adjustment information is for making described UE determine the first scheduling scheme that sends described data-signal; And then on described the first frequency band, receive described UE according to the described data-signal of described the first scheduling scheme transmission.

312, the network equipment, in the time of the data-signal that correctly the described UE of reception sends, sends the first wrong instruction to described UE, and described the first mistake instruction is used to indicate described the second equipment and resends described data-signal;

313, the network equipment receives the second reference signal that UE sends according to the first scheduling scheme on the first frequency band;

314, the network equipment sends the scheduling adjustment information definite according to described the second reference signal to described UE, and described scheduling adjustment information is used to indicate described UE and is identified for sending the 3rd scheduling scheme of described data-signal;

For instance, the scheduling adjustment information in this step can comprise at least one in power information, modulation system information and code rate information.Preferably, this scheduling adjustment information comprises modulation system information and code rate information, i.e. MCS information.Or this scheduling adjustment information comprises adjusted value of Modulation and Coding Scheme etc.

Should be understood that in the present embodiment, this scheduling adjustment information can comprise the final definite scheduling scheme of the network equipment, also can comprise each schedule information and the first scheduling scheme adjusted value or adjustment amount Comparatively speaking.Particularly, power information can comprise final transmission power value, also can comprise the adjusted value of transmitted power; Modulation system information can comprise final modulation system, also can comprise the adjusted value of modulation system; Code rate information can comprise final code rate, also can comprise adjusted value of code rate etc.

315, the network equipment receives the data-signal that described UE sends according to described the 3rd scheduling scheme on described the first frequency band.

It should be noted that, the network equipment, after receiving data-signal, can adopt the first scheduling scheme or the 3rd scheduling scheme to carry out demodulation to described data-signal, if demodulation is incorrect, repeats above-mentioned step 311 to step 315.

Certainly, if the correct demodulation of the network equipment above-mentioned data-signal, send the correct reception instruction of described data-signal to described U E.

From above-described embodiment, the method that the signal of the present embodiment retransmits, the network equipment correctly do not receive UE adopt first scheduling scheme send data-signal time, the network equipment sends the first wrong instruction to UE, UE transmits the second reference signal according to the first scheduling scheme to the network equipment, make the network equipment determine scheduling adjustment information according to the second reference signal, determine thus the 3rd final scheduling scheme, realize the matching of the channel quality of the 3rd scheduling scheme and signal transmission time, improve the reliability of signal transmission, solve the signal problem that reliability reduces in the time retransmitting in prior art.

Certainly, in actual applications, if the network equipment successfully receives above-mentioned data-signal, the network equipment sends the correct reception instruction of described data-signal to described UE; If the network equipment does not correctly receive above-mentioned data-signal, the network equipment sends the first wrong instruction of mentioning in above-mentioned steps 312 to described UE.

Should understand, if the network equipment does not correctly receive the described data-signal that described UE sends on the first frequency band, and the number of times that the described network equipment sends the described first wrong instruction reaches default threshold value, the described network equipment stops sending the described first wrong instruction, and the network equipment stops continuing to obtain the incorrect described data-signal receiving.

That is to say, in current standard, definition has the network equipment can send maximum retransmission, i.e. the threshold value of the number of times of the first wrong instruction.Reach default threshold value if the above-mentioned network equipment sends the number of times of described the first wrong instruction, and the network equipment is also correct receives described data-signal, now, the network equipment stops obtaining the correct described data-signal receiving.

Under a kind of special scene, if the network equipment does not correctly receive the described data-signal that described UE sends on the first frequency band, and the number of times that the described network equipment sends the described first wrong instruction does not reach default threshold value, the described network equipment, carrying out above-mentioned step 311 to step 315, also can adopt step 401 to the step 405 of giving an example as follows to retransmit above-mentioned data-signal.The present embodiment, only for illustrating, does not limit the mode that is used in combination of each embodiment.

In another optional application scenarios, in aforesaid step 313, RI, PMI that RI, the PMI adopting when UE sends the second reference signal adopts can send the first reference signal with UE time are identical; Or RI, PMI that RI, the PMI adopting when UE sends the second reference signal adopts can send the first reference signal with UE time are not identical.

Particularly, if described data-signal comprises multiple independently data blocks, and the described network equipment does not correctly receive any one data block (transport block) in described data-signal, RI, PMI in the first reference signal that RI, the PMI in the second reference signal that the described network equipment receives receives with the described network equipment are identical;

If described data-signal comprises multiple independently data blocks, and the described network equipment does not correctly receive the partial data piece in described data-signal, RI, PMI in the first reference signal that RI, the PMI in the second reference signal that the described network equipment receives receives from the described network equipment are different;

Wherein, the first reference signal is that described UE is adopting described the first scheduling scheme to send the reference signal sending before described data-signal.

It should be noted that, the RI of UE in the time just passing data-signal, PMI is that the network equipment is specified when scheduling UE transmits; Wherein, RI represents the quantity of the parallel data stream of uplink employing, and PMI represents the pre-coding matrix that the precoding of many antennas adopts.That is to say, network equipment scheduling UE can descend signaling to UE while carrying out transmission of data signals, and notice UE adopts what kind of RI and PMI, and then U E Adoption Network equipment specifies RI and PMI to generate the data-signal that sends the network equipment.

Thus, the method for the signal transmission in the present embodiment can improve the efficiency of signal transmission, can improve the reliability of signal transmission simultaneously.

The schematic flow sheet of the method that the signal that Fig. 3 C shows one embodiment of the invention to be provided retransmits, as shown in Figure 3 C, the method that the signal in the present embodiment retransmits is as described below.

321, UE receives the data-signal that the network equipment sends according to the first scheduling scheme on the first frequency band, and described the first scheduling scheme is used to indicate the described network equipment and on the first frequency band, sends described data-signal;

322, U E, in the time of the data-signal that correctly the described network equipment of reception sends, sends the first wrong instruction to the described network equipment, and described the first mistake instruction is used to indicate the described network equipment and resends described data-signal;

323, UE on the first frequency band, receive the described network equipment according to first scheduling scheme send the second reference signal as CSI-RS;

324, UE sends the scheduling adjustment information definite according to described the second reference signal to the described network equipment, and described scheduling adjustment information is used to indicate the described network equipment and is identified for sending the 3rd scheduling scheme of described data-signal;

325, UE receives the described data-signal that the described network equipment sends according to described the 3rd scheduling scheme on described the first frequency band.

It should be noted that, UE, after receiving data-signal, can adopt the first scheduling scheme or the 3rd scheduling scheme to carry out demodulation to described data-signal, if demodulation is incorrect, repeats above-mentioned step 321 to step 325.

Certainly, if the correct demodulation of UE above-mentioned data-signal, send the correct reception instruction of described data-signal to described base station.

Will be appreciated that, if UE does not correctly receive the described data-signal that the described network equipment sends on the first frequency band, and the number of times that described UE sends the described first wrong instruction reaches default threshold value, described UE stops sending the described first wrong instruction, stops obtaining the incorrect described data-signal receiving.

From above-described embodiment, the method that the signal of the present embodiment retransmits, can improve the reliability of signal transmission, has solved the signal problem that reliability reduces in the time retransmitting in prior art, has improved the efficiency of signal transmission simultaneously.

The schematic flow sheet of the method that the signal that Fig. 4 A shows one embodiment of the invention to be provided retransmits, as shown in Figure 4 A, the method that the signal in the present embodiment retransmits is as described below.

401, the network equipment receives the data-signal that UE sends according to the first scheduling scheme on the first frequency band, and described the first scheduling scheme is used to indicate described UE and on the first frequency band, sends described data-signal;

402, the network equipment, in the time of the data-signal that correctly the described UE of reception sends, sends the first wrong instruction to described UE, and described the first mistake instruction is used to indicate described UE and resends described data-signal;

403, the network equipment receives the second reference signal that described UE sends according to the second scheduling scheme on the second frequency band;

404, the network equipment sends the scheduling adjustment information definite according to described the second reference signal to described UE, and described scheduling adjustment information is used to indicate described UE and is identified for sending the 3rd scheduling scheme of described data-signal;

405, the network equipment receives the described data-signal that described UE sends according to described the 3rd scheduling scheme on described the second frequency band.

Above-mentioned the first scheduling scheme and the second scheduling scheme are different, and the first frequency band and the second frequency band are also different.

In the preferred application scenarios of one, if the described network equipment is the correct described data-signal that receives described UE transmission still, and the number of times that the described network equipment sends described the first wrong instruction does not reach described default threshold value, described method also comprises that following not shown step R01 ' is to step R05 ':

R01 ', the network equipment, in the time of the correct data-signal that receives described UE transmission, send the first wrong instruction of the M time to described UE, the described first wrong instruction is used to indicate described UE and resends described data-signal;

R02 ', the network equipment receive the Q reference signal that described UE sends according to P scheduling scheme on N frequency band;

R03 ', the network equipment send the scheduling adjustment information definite according to described Q reference signal to described UE, and described scheduling adjustment information is used to indicate described UE and is identified for sending the P+1 scheduling scheme of described data-signal;

R04 ', the network equipment receive the described data-signal that described UE sends according to described P+1 scheduling scheme on described N frequency band;

Wherein, M gets the positive integer that is greater than 1, and P gets the positive integer that is greater than 3, and N, Q get the positive integer that is greater than 2, and described UE retransmits described the data-signal frequency band using and the frequency band that sends before described data-signal and do not repeat.Above-mentioned M changes, and P, N, Q change successively.

That is to say, if UE data retransmission Signal Fail on the second frequency band, data retransmission signal on the 3rd frequency band, the like, the frequency band that each data retransmission signal uses is all different.

The schematic flow sheet of the method that the signal that Fig. 4 B shows one embodiment of the invention to be provided retransmits, as shown in Figure 4 B, the method that the signal in the present embodiment retransmits is as described below.

411, UE receives the data-signal that the network equipment sends according to the first scheduling scheme on the first frequency band, and described the first scheduling scheme is used to indicate the described network equipment and on the first frequency band, sends described data-signal;

412, U E, in the time of the data-signal that correctly the described network equipment of reception sends, sends the first wrong instruction to the described network equipment, and described the first mistake instruction is used to indicate the described network equipment and resends described data-signal;

413, UE receives the second reference signal that the described network equipment sends according to the second scheduling scheme on the second frequency band;

414, UE sends the scheduling adjustment information definite according to described the second reference signal to the described network equipment, and described scheduling adjustment information is used to indicate the described network equipment and is identified for sending the 3rd scheduling scheme of described data-signal;

415, UE receives the described data-signal that the described network equipment sends according to described the 3rd scheduling scheme on described the second frequency band.

In above-mentioned steps, the second scheduling scheme can be different from described the first scheduling scheme, and described the second frequency band can be different from described the first frequency band.

In the preferred application scenarios of one, receive if UE is still correct the described data-signal that the described network equipment sends, described UE continues to send the first wrong instruction to the described network equipment, specifically comprises that following step N01 is to step N04:

N01, UE, in the time of the correct data-signal that receives described network equipment transmission, send the first wrong instruction of the M time to the described network equipment, the described first wrong instruction is used to indicate the described network equipment and resends described data-signal;

N02, UE receive the Q reference signal that the described network equipment sends according to P scheduling scheme on N frequency band;

N03, UE send the scheduling adjustment information definite according to described Q reference signal to the described network equipment, and described scheduling adjustment information is used to indicate the described network equipment and is identified for sending the P+1 scheduling scheme of described data-signal;

N04, UE receive the described data-signal that the described network equipment sends according to described P+1 scheduling scheme on described N frequency band;

Wherein, M gets the positive integer that is greater than 1, and P gets the positive integer that is greater than 3, and N, Q get the positive integer that is greater than 2, and the described network equipment retransmits described the data-signal frequency band using and the frequency band that sends before described data-signal and do not repeat.Above-mentioned M changes, and P, N, Q change successively.

The schematic flow sheet of the method that the signal that Fig. 5 shows another embodiment of the present invention to be provided retransmits, as shown in Figure 5, the method that the signal of the present embodiment retransmits is as described below.

501, the second equipment, according to the first scheduling scheme, sends described data-signal to described the first equipment on described the first frequency band, and described the first scheduling scheme is used to indicate described the second equipment and on the first frequency band, sends described data-signal;

502, the second equipment receives the first wrong instruction that the first equipment sends in the time of the correct data-signal that receives described the second equipment transmission, and the described first wrong instruction is used to indicate described the second equipment and resends described data-signal;

503, the first wrong instruction described in the second device responds, according to the second scheduling scheme, on the second frequency band, send the second reference signal to described the first equipment, described the second scheduling scheme is used to indicate described the second equipment and on the second frequency band, sends described the second reference signal;

504, the second equipment receives the scheduling adjustment information definite according to described the second reference signal that described the first equipment sends, and is identified for sending the 3rd scheduling scheme of described data-signal according to described scheduling adjustment information;

505, the second equipment, according to described the 3rd scheduling scheme, sends described data-signal to described the first equipment on described the second frequency band.

For instance, each in the first scheduling scheme and described the second scheduling scheme, described the 3rd scheduling scheme comprises one or more in following information:

The redundancy versions that power information, modulation system information, code rate information, described the second equipment adopt while sending described data-signal, described the second equipment send described data-signal and whether adopt information of frequency-hopping mode etc.

Alternatively, after step 505, the method that above-mentioned signal retransmits also comprises following not shown step 506:

506, described the second equipment continues to receive the first wrong instruction that described the first equipment sends in the time of the correct data-signal that receives described the second equipment transmission; Can carry out signal re-transmission according to above-mentioned steps 501 to the method described in step 505.

Reach default threshold value if described the first equipment sends the number of times of the described first wrong instruction, described the second equipment no longer receives the described first wrong instruction.Now the second equipment stops continuing to carry out the operation that receives the described first wrong instruction.

In actual applications, before step 501, the method that signal retransmits also can comprise following not shown step 500:

500, the second equipment sends the first reference signal to described the first equipment, so that described the first equipment is determined the first scheduling scheme that sends described the second equipment according to described the first reference signal;

And then, if described data-signal comprises multiple independently data blocks, and described the first equipment does not correctly receive any one data block in described data-signal, the RI, the PMI that while adopting described the second equipment to send the first reference signal when described the second equipment sends described the second reference signal, adopt;

In a kind of application scenarios, above-mentioned the second scheduling scheme and the first scheduling scheme can be identical, and the second frequency band and the first frequency band can be identical.

In another kind of application scenarios, the second above-mentioned scheduling scheme can be different from the first scheduling scheme, and the second frequency band is also different from the first frequency band.

Especially, if the second scheduling scheme is different from the first scheduling scheme, and the second frequency band is also different from the first frequency band, continue at the second equipment the first wrong instruction sending while receiving described the first equipment at the correct data-signal that receives described the second equipment transmission, as the first wrong instruction of the M time, specifically comprise that following not shown sub-step X01 is to sub-step X03:

Described in X01, described the second device responds, the first wrong instruction according to P scheduling scheme, sends Q reference signal to described the first equipment on N frequency band;

X02, described the second equipment receive the scheduling adjustment information definite according to described Q reference signal that described the first equipment sends, and are identified for sending the P+1 scheduling scheme of described data-signal according to described scheduling adjustment information;

X03, described the second equipment, according to described P+1 scheduling scheme, send described data-signal to described the first equipment on described N frequency band;

For instance, if the first equipment in above-described embodiment be the network equipment as base station, the second equipment is UE, described the second reference signal is SRS;

Or,

If the first equipment in above-described embodiment is UE, the second equipment is the network equipment, and described the second reference signal is CSI-RS.

The method that the signal of the present embodiment retransmits, can improve the reliability of signal transmission, has solved the signal problem that reliability reduces in the time retransmitting in prior art, has improved the efficiency of signal transmission simultaneously.

According to the embodiment of the present invention on the other hand, the embodiment of the present invention also provides a kind of communication equipment, and as shown in Figure 6, described communication equipment comprises: transmitting element 61 and receiving element 62;

Wherein, the data-signal that receiving element 62 sends according to the first scheduling scheme for receive another equipment on the first frequency band, described the first scheduling scheme is used to indicate described another equipment and on the first frequency band, sends described data-signal;

Transmitting element 61, for described receiving element 62 is correct while receiving the data-signal that described another equipment sends, sends the first wrong instruction to described another equipment, and the described first wrong instruction is used to indicate described another equipment and resends described data-signal;

Described receiving element 62, for send the described first wrong instruction at described transmitting element 61 after, receives described another equipment and is receiving the second reference signal sending according to the second scheduling scheme after the first wrong instruction on the second frequency band;

Described transmitting element 61 is for after described receiving element 62 receives described the second reference signal, send the scheduling adjustment information definite according to described the second reference signal to described another equipment, described in described scheduling adjustment information is used to indicate, another equipment is identified for sending the 3rd scheduling scheme of described data-signal;

Described receiving element 62, for after described transmitting element 61 sends described scheduling adjustment information, receives the described data-signal that described another equipment sends according to described the 3rd scheduling scheme on described the second frequency band.

In a kind of possible realizing in scene, the second above-mentioned scheduling scheme is identical with the first above-mentioned scheduling scheme, and the second above-mentioned frequency band is identical with the first above-mentioned frequency band; , another equipment adopts original scheme data retransmission signal on original frequency band.

In possible the realizing in scene of the second, the second above-mentioned scheduling scheme is different from the first above-mentioned scheduling scheme, and the second above-mentioned frequency band is different from the first above-mentioned frequency band; , another equipment can adopt other scheduling scheme data retransmission signal on new frequency band.

In concrete application, each in described the first scheduling scheme and described the second scheduling scheme, the 3rd scheduling scheme comprises one or more in following information:

The redundancy versions that power information, modulation system information, code rate information, described another equipment adopt while sending described data-signal, described another equipment send described data-signal and whether adopt information of frequency-hopping mode etc.

In the optional application scenarios of one, described transmitting element 61 is not also in the time that described receiving element 62 still correctly receives the described data-signal of described another equipment transmission, continue to send described the first wrong instruction to described another equipment, until described transmitting element 61 sends the number of times of the described first wrong instruction while reaching default threshold value.

For instance, described receiving element 62 also for receiving another equipment according to before the data-signal of the first scheduling scheme transmission on the first frequency band, also receive the first reference signal that described another equipment sends, determine described the first scheduling scheme according to described the first reference signal, and by described another equipment of described the first scheduling scheme notice;

And then comprise multiple independently data blocks at described data-signal, and when described receiving element 62 does not correctly receive any one data block in described data-signal, RI, PMI in the first reference signal that RI, the PMI in the second reference signal that described receiving element 62 receives receives with described receiving element are identical;

Comprise multiple independently data blocks at described data-signal, and when described receiving element 62 does not correctly receive the partial data piece in described data-signal, RI, PMI in the first reference signal that RI, the PMI in the second reference signal that described receiving element 62 receives receives from described receiving element are different.

In possible the realizing in scene of above-mentioned the second, described transmitting element 61 is not also in the time that described receiving element 62 still correctly receives the data-signal of described another equipment transmission, send the first wrong instruction of the M time to described another equipment, the described first wrong instruction is used to indicate described another equipment and resends described data-signal;

Described receiving element 62 also, for send the first wrong instruction of the M time at described transmitting element 61 after, receives the Q reference signal that described another equipment sends according to P scheduling scheme on N frequency band;

Described transmitting element 61 is also for after described receiving element 62 receives described Q reference signal, send the scheduling adjustment information definite according to described Q reference signal to described another equipment, described in described scheduling adjustment information is used to indicate, another equipment is identified for sending the P+1 scheduling scheme of described data-signal;

Described receiving element 62, also for after described transmitting element 61 sends described scheduling adjustment information, receives the described data-signal that described another equipment sends according to described P+1 scheduling scheme on described N frequency band;

Wherein, M gets the positive integer that is greater than 1, and P gets the positive integer that is greater than 3, and N, Q get the positive integer that is greater than 2, and described another equipment retransmits described the data-signal frequency band using and the frequency band that sends before described data-signal and do not repeat.Above-mentioned M changes, and P, N, Q change successively.

In actual applications, above-mentioned communication equipment can be that the network equipment can be also subscriber equipment, and particularly, described communication equipment is the network equipment, and described another equipment is UE, and described the second reference signal is SRS;

Or,

Described communication equipment is UE, and described another equipment is the network equipment, and described the second reference signal is CSI-RS.

Mutual by with another equipment of the communication equipment of the present embodiment, can improve the reliability of the data-signal transmission of another equipment, has solved the data-signal problem that reliability reduces in the time retransmitting in prior art, has improved the efficiency of signal transmission simultaneously.

According to the embodiment of the present invention on the other hand, the embodiment of the present invention also provides a kind of communication equipment, and as shown in Figure 7, the communication equipment of the present embodiment comprises: receiving element 71 and transmitting element 72;

Wherein, transmitting element 72 is for according to the first scheduling scheme, and on the first frequency band, to another equipment sending data signal, described the first scheduling scheme is used to indicate communication equipment and on the first frequency band, sends described data-signal;

Receiving element 71 is for after described transmitting element 72 sends described data-signal, receive the first wrong instruction that described another equipment sends in the time of the correct data-signal that receives described communication equipment transmission, the described first wrong instruction is used to indicate described communication equipment and resends described data-signal;

Described transmitting element 72 also, for receive the described first wrong instruction at described receiving element 71 after, responds the described first wrong instruction, according to the second scheduling scheme, on the second frequency band, sends described the second reference signal to described another equipment;

Described receiving element 71 is for after described transmitting element 72 sends described the second reference signal, receive the scheduling adjustment information definite according to described the second reference signal that described another equipment sends, and be identified for sending the 3rd scheduling scheme of described data-signal according to described scheduling adjustment information;

Described transmitting element 72 is for receiving described scheduling adjustment information at described receiving element 71, and after determining the 3rd scheduling scheme, according to described the 3rd scheduling scheme, on described the second frequency band, sends described data-signal to described another equipment.

May realize in scene in the first, the second above-mentioned scheduling scheme is identical with the first above-mentioned scheduling scheme, and the second above-mentioned frequency band is identical with the first above-mentioned frequency band.

In possible the realizing in scene of the second, the second above-mentioned scheduling scheme is different from the first above-mentioned scheduling scheme, and the second above-mentioned frequency band is different from the first above-mentioned frequency band.

In concrete application, each in the first above-mentioned scheduling scheme and the second above-mentioned scheduling scheme, above-mentioned the 3rd scheduling scheme comprises one or more in following information:

Certainly, described receiving element 71 also receives for continuing the first wrong instruction that described another equipment sends in the time correctly not receiving the data-signal of described communication equipment transmission, reaches default threshold value until receive the number of times of described the first mistake instruction.Reach after described threshold value at the number of times that receives the first wrong instruction, receiving element 71 can stop receiving the first wrong instruction.

For instance, described transmitting element 72 is also for according to the first scheduling scheme, on the first frequency band to before another equipment sending data signal, send the first reference signal to described another equipment, so that described another equipment is determined the first scheduling scheme that sends described communication equipment according to described the first reference signal;

Now, if described data-signal comprises multiple independently data blocks, and described another equipment does not correctly receive any one data block in described data-signal, the RI, the PMI that while adopting described transmitting element to send the first reference signal when described transmitting element 72 sends described the second reference signal, adopt;

If described data-signal comprises multiple independently data blocks, and described another equipment does not correctly receive the partial data piece in described data-signal, when described transmitting element 72 sends described the second reference signal, adopt PI, PMI different while sending the first reference signal from described transmitting element.

For possible the realizing in scene of above-mentioned the second, above-mentioned transmitting element 72 is also for continuing to receive described another equipment when correct the first wrong instruction sending while receiving the data-signal that described communication equipment sends at described receiving element 71, respond the described first wrong instruction, according to P scheduling scheme, on N frequency band, send Q reference signal to described another equipment;

Described receiving element 71 is also for after described transmitting element 72 sends described Q reference signal, receive the scheduling adjustment information definite according to described Q reference signal that described another equipment sends, and be identified for sending the P+1 scheduling scheme of described data-signal according to described scheduling adjustment information;

Described transmitting element 72 also, for after described receiving element 71 is determined P+1 scheduling scheme, according to described P+1 scheduling scheme, sends described data-signal to described another equipment on described N frequency band;

In concrete application, above-mentioned communication equipment can be UE, can be also the network equipment as base station, particularly, communication equipment can be user equipment (UE), described another equipment can be the network equipment, described the second reference signal is SRS;

Or described communication equipment can be the network equipment, described another equipment can be UE, and described the second reference signal can be CSI-RS.

It should be noted that, in the embodiment of above communication equipment, the division of each functional unit only illustrates, can be as required in practical application, the facility of the configuration requirement of for example corresponding hardware or the realization of software is considered, completed by different functional units and above-mentioned functions is distributed, be divided into different functional units by the internal structure of described communication equipment, to complete all or part of function described above.And, in practical application, corresponding functional unit in the present embodiment can be to be realized by corresponding hardware, also can be completed by the corresponding software of corresponding hardware implement, for example, aforesaid transmitting element, can be to have the hardware of carrying out aforementioned transmitting element function, for example reflector, thus can be also general processor or other hardware devices that can carry out corresponding computer program and complete aforementioned function; For another example, aforesaid receiving element, can be to have the hardware of aforementioned receiving element function of execution, for example receiver, thus can be also general processor or other hardware devices that can carry out corresponding computer program and complete aforementioned function; (each embodiment that this specification provides can apply foregoing description principle).

According to the embodiment of the present invention on the other hand, the embodiment of the present invention also provides a kind of communication equipment, the communication equipment of the present embodiment comprises: memory and processor, wherein, memory and processor coupling, memory is for storing the information that comprises the performed program routine of described processor, and described processor is for controlling the execution of described program routine; Particularly, the function that processor is realized for carrying out the transmitting element 61 shown in above-mentioned Fig. 6 and receiving element 62, it comprises transmitting element 61 and receiving element 6, or, processor is carried out the function that the transmitting element 72 shown in above-mentioned Fig. 7 and receiving element 71 are realized, and it comprises transmitting element 72 and receiving element 71.Memory and processor can be realized by logical integrated circuit.

One of ordinary skill in the art will appreciate that: all or part of step that realizes above-mentioned each embodiment of the method can complete by the relevant hardware of program command.Aforesaid program can be stored in a computer read/write memory medium.This program, in the time carrying out, is carried out the step that comprises above-mentioned each embodiment of the method; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CDs.

Finally it should be noted that: above each embodiment, only in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or some or all of technical characterictic is wherein equal to replacement; And these amendments or replacement do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.

Claims

1. the method that signal retransmits, is characterized in that, comprising:

Described the first equipment receives the described data-signal that described the second equipment sends according to described the 3rd scheduling scheme on described the second frequency band.

2. method according to claim 1, is characterized in that,

Described the second scheduling scheme is identical with described the first scheduling scheme, and described the second frequency band is identical with described the first frequency band;

Or,

3. method according to claim 1 and 2, is characterized in that, each in described the first scheduling scheme and described the second scheduling scheme, the 3rd scheduling scheme comprises one or more in following information:

4. according to the arbitrary described method of claims 1 to 3, it is characterized in that, described the first equipment receives described the second equipment according to after the described data-signal of described the 3rd scheduling scheme transmission on described the second frequency band, also comprises:

5. according to the arbitrary described method of claim 1 to 4, it is characterized in that, described the first equipment receives the second equipment according to before the data-signal of the first scheduling scheme transmission on the first frequency band, also comprises:

6. method according to claim 4, is characterized in that, if the still correct described data-signal that receives described the second equipment transmission of described the first equipment, described the first equipment continues to send the first wrong instruction to described the second equipment, comprising:

7. according to the arbitrary described method of claim 1 to 6, it is characterized in that,

Or,

8. the method that signal retransmits, is characterized in that, comprising:

9. method according to claim 8, is characterized in that,

Or,

10. method according to claim 8 or claim 9, is characterized in that, each in described the first scheduling scheme and described the second scheduling scheme, described the 3rd scheduling scheme comprises one or more in following information:

Method described in 11. according to Claim 8 to 10 are arbitrary, is characterized in that, described the second equipment, according to described the 3rd scheduling scheme, sends after described data-signal to described the first equipment on described the second frequency band, also comprises:

12. according to Claim 8 to 11 arbitrary described method, it is characterized in that, described the second equipment is according to the first scheduling scheme, on the first frequency band, to before the first equipment sending data signal, also comprises:

13. methods according to claim 11, is characterized in that, described the second equipment continues to receive the first wrong instruction that described the first equipment sends in the time of the correct data-signal that receives described the second equipment transmission, comprising:

Method described in 14. according to Claim 8 to 13 are arbitrary, is characterized in that,

Or,

15. 1 kinds of communication equipments, is characterized in that, comprising:

16. communication equipments according to claim 15, is characterized in that,

Or,

17. according to the communication equipment described in claim 15 or 16, it is characterized in that, each in described the first scheduling scheme and described the second scheduling scheme, the 3rd scheduling scheme comprises one or more in following information:

18. according to claim 15 to 17 arbitrary described communication equipments, it is characterized in that, described transmitting element, also in the time that described receiving element does not still correctly receive the described data-signal of described another equipment transmission, continue to send the described first wrong instruction to described another equipment, reach default threshold value until described transmitting element sends the number of times of the described first wrong instruction.

19. according to claim 15 to 18 arbitrary described communication equipments, it is characterized in that, described receiving element, also for

20. communication equipments according to claim 18, is characterized in that,

21. according to claim 15 to 20 arbitrary described communication equipments, it is characterized in that, described communication equipment is the network equipment, and described another equipment is user equipment (UE), and described the second reference signal is detection reference signal SRS;

Or,

22. 1 kinds of communication equipments, is characterized in that, comprising:

23. communication equipments according to claim 22, is characterized in that,

Or,

24. according to the communication equipment described in claim 22 or 23, it is characterized in that, each in described the first scheduling scheme and described the second scheduling scheme, described the 3rd scheduling scheme comprises one or more in following information:

25. according to the arbitrary described communication equipment of claim 22 to 24, it is characterized in that, described receiving element, also receive for continuing the first wrong instruction that described another equipment sends in the time correctly not receiving the data-signal of described communication equipment transmission, reach default threshold value until receive the number of times of described the first mistake instruction.

26. according to the arbitrary described communication equipment of claim 22 to 25, it is characterized in that, described transmitting element, also for according to the first scheduling scheme, on the first frequency band to before another equipment sending data signal, send the first reference signal to described another equipment, so that described another equipment is determined the first scheduling scheme that sends described communication equipment according to described the first reference signal;

27. communication equipments according to claim 25, is characterized in that,

28. according to the arbitrary described communication equipment of claim 22 to 27, it is characterized in that,

Or,