CN103580817A - Data transmission method, device and system and relevant equipment - Google Patents
Data transmission method, device and system and relevant equipment Download PDFInfo
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- CN103580817A CN103580817A CN201210268679.3A CN201210268679A CN103580817A CN 103580817 A CN103580817 A CN 103580817A CN 201210268679 A CN201210268679 A CN 201210268679A CN 103580817 A CN103580817 A CN 103580817A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1825—Adaptation of specific ARQ protocol parameters according to transmission conditions
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Abstract
The invention discloses a data transmission method, device and system and relevant equipment which are used for guaranteeing the reliability of data transmission in an idle state. The data transmission method comprises the steps of receiving a data transmission request which is sent by an MTC terminal in the idle state, acquiring the type of services used by the MTC terminal, choosing a retransmission mode of data according to the type of the services, and retransmitting transmitted downlink data according to the chosen data retransmission mode.
Description
Technical field
The present invention relates to wireless communication technology field, relate in particular to a kind of data transmission method, device, system and relevant device.
Background technology
Machine type communication (MTC, Machine-Type Communication) refers to the communication between machine and machine or equipment and equipment (M2M, Machine to Machine), and a kind of communication mode that does not need people to participate in.As shown in Figure 1, for MTC terminal communication scene schematic diagram in prior art, each MTC terminal communicates by carrier network and MTC server, each MTC terminal both can send upstream data to MTC server, also can receive the downlink data that MTC server sends, wherein between MTC terminal and MTC server, by base station, transmit data.
Along with the fast development of M2M business, MTC terminal scale increases blowout formula, and in same community, MTC terminal number may reach tens thousand of.Core net standard 3GPP22.368 has defined 16 kinds of key characters of MTC terminal, comprises Hypomobility, time control type, time delay tolerance type, online small data transmission type etc., for different application, comprise check meter class application, Long-distance Control etc., may there is the combination of 1 or several features.
At present, for the focus of MTC research, mainly concentrate the optimization that whether is necessary the type communication to carry out network facet, particularly whether magnanimity MTC terminal applies in real network time, can impact person to person (Human to Human) in the future.For M2M business, one of them important service is terminal image data and reports, for example, intelligent electric meter, water meter, gas meter etc., the feature that such business has is that the data volume of collection is little, transmission time interval is fixed, while access network, if the while of the MTC terminal in same community access network will cause network congestion.In order to address the above problem, prior art has proposed data transmission method under Idle state, in MTC terminal during in connected state, network side is that MTC terminal distribution is for the resource in Idle state transmission data, when M2M terminal is during in Idle state, can utilize that network side distributes for the resource transmission data in Idle state transmission data.Under above-mentioned Idle state, data transmission method can solve a large amount of MTC network congestion problem that access network causes simultaneously, and still, the method is not considered the packet loss problem in data transmission procedure, thereby has reduced the reliability of transfer of data under Idle state.
Summary of the invention
The embodiment of the present invention provides a kind of data transmission method, device, system and relevant device, in order to guarantee the reliability of transfer of data under Idle state.
The embodiment of the present invention provides a kind of data transmission method, comprising:
Receive the data transfer request that machine type communication MTC terminal sends under Idle state;
Obtain the type of service of described MTC business that terminal is used;
According to described type of service, select data re-transmission mode;
According to the data re-transmission mode of selecting, transmitting downlink data is retransmitted.
The embodiment of the present invention provides a kind of data transmission device, comprising:
Receiving element, the data transfer request sending under Idle state for receiving machine type communication MTC terminal;
Obtain unit, for obtaining the type of service of described MTC business that terminal is used;
Selected cell, for the type of service obtaining according to described acquisition unit, selects data re-transmission mode;
Transmission unit, for retransmitting transmitting downlink data according to selecting data re-transmission mode.
The embodiment of the present invention provides a kind of base station equipment, comprises above-mentioned data transmission device.
The embodiment of the present invention provides another data transmission method, comprising:
When Idle state, to network side, send data transfer request; And
Receive the feedback message that network side sends;
According to described feedback message, transmit ascending data is retransmitted.
The embodiment of the present invention provides another data transmission device, comprising:
Transmitting element, for during in Idle state, sending data transfer request to network side at described terminal equipment;
Receiving element, the feedback message sending for receiving network side;
Transmission unit, for retransmitting transmit ascending data according to described feedback message.
The embodiment of the present invention provides a kind of terminal equipment, comprises above-mentioned data transmission device.
The data transmission method that the embodiment of the present invention provides, device, system and relevant device, when MTC terminal request is carried out transfer of data under Idle state, after network side receives the request of MTC terminal, obtain the type of service that this MTC terminal is used, and the type of using according to this MTC terminal determine to need guarantees and this MTC terminal between during the reliability of transfer of data, select a kind of data re-transmission mode, according to the data re-transmission mode of selecting, to transmitting data, retransmit; For end side, the feedback message that carries out transfer of data under the Idle state returning according to the network side receiving retransmits transmitting data, due to packet loss treatment mechanism being provided in above-mentioned data transmission procedure, thereby, the reliability of transfer of data under Idle state can be guaranteed.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, or understand by implementing the present invention.Object of the present invention and other advantages can be realized and be obtained by specifically noted structure in the specification write, claims and accompanying drawing.
Accompanying drawing explanation
Fig. 1 is in prior art, MTC terminal communication scene schematic diagram;
In Fig. 2 embodiment of the present invention, the implementing procedure schematic diagram of network side data transmission method;
Fig. 3 is in the embodiment of the present invention, the implementing procedure schematic diagram of terminal side data transmission method;
Fig. 4 is in the embodiment of the present invention, the structural representation of the first data transmission device;
Fig. 5 is in the embodiment of the present invention, the structural representation of the second data transmission device;
Fig. 6 is in the embodiment of the present invention, the structural representation of data transmission system.
Embodiment
In order to guarantee the reliability of transfer of data under Idle state, the embodiment of the present invention provides a kind of data transmission method, device, system and relevant device, and the data transmission method that the embodiment of the present invention provides is applicable to the transfer of data under machine type communication scene.
Below in conjunction with Figure of description, the preferred embodiments of the present invention are described, be to be understood that, preferred embodiment described herein is only for description and interpretation the present invention, be not intended to limit the present invention, and in the situation that not conflicting, embodiment and the feature in embodiment in the present invention can combine mutually.
Embodiment mono-
As shown in Figure 2, the implementing procedure schematic diagram of the network side data transmission method providing for the embodiment of the present invention, comprises the following steps:
S201, base station receive the data transfer request that MTC terminal sends under Idle state;
Concrete, in MTC terminal, during in idle condition, transfer of data is carried out in request base station.
S202, base station obtain the type of service of this MTC business that terminal is used;
Concrete, base station can obtain by following two kinds of modes the type of service of MTC business that terminal is used: 1) in MTC terminal sends to the data transfer request of base station, carry terminal iidentification, base station after receiving the data transfer request that MTC terminal sends, the type of service according to the terminal iidentification of this MTC terminal from this MTC business that terminal is used of core net; 2) in MTC terminal sends to the data transfer request of base station, carry the type of service of this MTC business that terminal is used, in this case, base station can directly obtain the type of service of this MTC business that terminal is used from data transfer request.
Data re-transmission mode, according to the type of service obtaining, is selected in S203, base station;
During concrete enforcement, according to the type of service obtaining, determine need to guarantee and MTC terminal between data transmission credibility time, base station can adopt any in following several data re-transmission mode to carry out data re-transmission:
Mode one physical layer is transmission means repeatedly
If base station adopts which, data re-transmission number of times can be carried in base station in the feedback message to MTC terminal return data transmission request.
Mode two HARQ(mixed automatic retransfer requests) mode
If base station adopts which, the first maximum retransmission that HARQ can be carried in base station in the feedback message to MTC terminal return data transmission request, also can optionally carry the HARQ feedback result receiving is that ACK(confirms) number of times of signaling.
Mode three HARQ are in conjunction with ARQ(HARQ) mode
In which, the problem of self makeing mistakes and causing transfer of data to be made mistakes for fear of HARQ feedback, for example, certain moment MTC terminal correctly receives downlink data, and still, its feedback result is NACK signaling, can adopt ARQ to feed back to carry out transfer of data inspection.Under which, the second maximum retransmission of HARQ can be carried in base station in the feedback message that returns to described data transfer request to MTC terminal, and every secondary data (up or descending) is transmitted the running time-frequency resource positional information that corresponding ARQ feedback is used.
S204, base station retransmit transmitting downlink data according to the data re-transmission mode of selecting.
During concrete enforcement, base station is under Idle state during to MTC terminal transmission downlink data, if base station adopts mode one to carry out data re-transmission, for each downlink data, after base station is transmitted this downlink data first, on the same asset position of descending sub frame of transmitting this downlink data, carry out data re-transmission, until number of retransmissions reaches the data re-transmission number of times of setting; If base station adopts mode two to carry out data re-transmission, for each downlink data, no matter MTC terminal feedback result is ACK signaling or the non-confirmation of NACK() signaling, base station all need to retransmit this downlink data at retransmission time, until number of retransmissions reaches the first maximum retransmission of HARQ or feedback result that base station receives, be that the number of times of ACK signaling reaches preset times, wherein, MTC terminal is at PUCCH(Physical Downlink Control Channel) or PHICH(physics repeat requests indicating channel) ACK/NACK feedback position feedback result.If base station adopts mode three to carry out data re-transmission, for each downlink data, base station retransmits at retransmission time, until number of retransmissions reaches the second maximum retransmission of HARQ, simultaneously, for each transmitting downlink data, MTC terminal is according to feeding back the ARQ feedback result of this downlink data on running time-frequency resource position corresponding to the running time-frequency resource positional information receiving.
Especially, during concrete enforcement, for each downlink data, when base station adopts mode two to carry out data re-transmission, if base station receives the number of times that the feedback result of the HARQ of MTC terminal feedback is ACK and is less than preset times, or base station is while adopting mode three to carry out data re-transmission, when the ARQ feedback result of MTC terminal feedback is NACK, the data transmission method that the embodiment of the present invention provides, can also comprise the following steps:
Step 1, determine re-transmission resource, this re-transmission resource is the downlink data that the number of times of ACK does not reach the downlink data of preset times or the ARQ feedback result that receives is NACK for retransmitting HARQ feedback result;
Step 2, in the re-transmission resource of determining, to retransmit HARQ feedback result be the downlink data that the number of times of ACK does not reach the downlink data of preset times or the ARQ feedback result that receives is NACK.
Preferably, retransmit the transfer resource using and have following several definite mode:
1), when the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI, Cell Radio Network Temporary Identifier) that MTC terminal is distributed in base station when connected state is still available, base station can be used this C-RNTI for MTC terminal distribution re-transmission resource;
2) MTC terminal is initiated random access, determines the 4th step in random access, and base station is controlled to MTC terminal feedback RRC(Radio Resource) transfer resource that uses of connection request is as re-transmission resource;
3) MTC terminal finishes current Idle state transmission mode, reenters connected state, and base station is defined as the transfer resource of MTC terminal distribution as re-transmission resource.
In the data transmission method providing due to embodiment mono-, when MTC asks to carry out transfer of data under Idle state, if the type of service that base station is used according to MTC terminal, while determining the data transmission credibility needing between assurance and MTC terminal, can select physical layer repeatedly transmission or HARQ or HARQ in conjunction with ARQ mode, guarantee the reliability of transfer of data, reduced the possibility of losing this in data transmission procedure.
Embodiment bis-
Based on same inventive concept, embodiment bis-provides a kind of data transmission device, and because the principle that this device is dealt with problems is similar to data transmission method, so the enforcement of this device can, referring to the enforcement of method, repeat part and repeat no more.
As shown in Figure 3, the structural representation of the data transmission device providing for the embodiment of the present invention, comprising:
Receiving element 301, the data transfer request sending under Idle state for receiving MTC terminal;
Obtain unit 302, for obtaining the type of service of MTC business that terminal is used;
Selected cell 303, for according to the type of service that obtains unit 302 acquisitions, selects data re-transmission mode;
Transmission unit 304, for retransmitting transmitting downlink data according to selecting data re-transmission mode.
During concrete enforcement, obtaining unit 302 can be for obtaining the type of service of MTC business that terminal is used from core net; Or can when carrying the type of service of business that MTC is used in data transfer request, from data transfer request, obtain the type of service of MTC business that terminal is used.
Wherein, data re-transmission mode be physical layer repeatedly transmission means or for mixed automatic retransfer request HARQ mode or for HARQ in conjunction with HARQ ARQ mode.
During concrete enforcement, the data transmission device that the embodiment of the present invention provides, can also comprise:
Transmitting element for return to the feedback message of described data transfer request to MTC terminal, wherein, if data re-transmission mode is physical layer repeatedly during transmission means, carries data re-transmission number of times in feedback message; When if data re-transmission mode is HARQ mode, in feedback message, carry the HARQ feedback result that carries the first maximum retransmission of HARQ in the first maximum retransmission of HARQ or described feedback message and receive for confirming the number of times of ACK signaling; If data re-transmission mode is HARQ mode during in conjunction with ARQ mode, in described feedback message, carry the second maximum retransmission of HARQ and the running time-frequency resource positional information that ARQ feedback corresponding to every data transfer used.
Wherein, if base station adopts mode one to transmit, while carrying data re-transmission number of times in feedback message, transmission unit 304 can be for after transmitting downlink data first, on the transfer resource that transmitting downlink data is used first, retransmit transmitting downlink data, until number of retransmissions reaches described data re-transmission number of times; Or
If base station adopts mode two to transmit, and if while carrying the first maximum retransmission of HARQ in feedback message, transmission unit 304 can be for retransmit transmitting downlink data at retransmission time, until number of retransmissions reaches the first maximum retransmission of HARQ;
If base station adopts mode two to transmit, and when the HARQ feedback result of carrying the first maximum retransmission of HARQ and receiving in feedback message is the number of times of ACK signaling, transmission unit 304 can be for retransmit transmitting downlink data at retransmission time, until the number of times that number of retransmissions reaches the first maximum retransmission of HARQ or the HARQ feedback result that receives is ACK reaches preset times;
If base station adopts mode three to transmit, when the HARQ feedback result of carrying the first maximum retransmission of HARQ and receiving in feedback message is the number of times of ACK signaling, transmission unit 304 can be for retransmit transmitting downlink data at retransmission time, until number of retransmissions reaches the second maximum retransmission of HARQ; In this manner, receiving element 301, can also be for receiving the ARQ feedback result of the transmitting downlink data of MTC terminal transmission, and this ARQ feedback result is that MTC terminal sends on running time-frequency resource position corresponding to described running time-frequency resource positional information.
During concrete enforcement, the data transmission device that the embodiment of the present invention provides, can also comprise determining unit, wherein:
Determining unit, the number of times that can be ACK for the HARQ feedback result receiving does not reach preset times, or when the ARQ feedback result receiving is NACK, the re-transmission resource that the downlink data that the number of times that is identified for retransmitting HARQ feedback result and is ACK does not reach the downlink data of preset times or the ARQ feedback result that receives is NACK is used;
Transmission unit 304 can also be the downlink data that the number of times of ACK does not reach the downlink data of preset times or the ARQ feedback result that receives is NACK for retransmit HARQ feedback result in the re-transmission resource of determining.
Wherein, determining unit can, for using the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI of distributing to described MTC terminal when the connected state, be MTC terminal distribution re-transmission resource; Or can be for determining when MTC terminal is initiated random access, the transfer resource that feedback radio resource control RRC connection request is used is as re-transmission resource; Or can be for determining when MTC terminal reenters connected state, for the transfer resource of MTC terminal distribution is as re-transmission resource.
It should be noted that, while specifically implementing, the data transmission device that embodiment bis-provides can be arranged in base station equipment.
Embodiment tri-
Embodiment tri-provides a kind of terminal side data transmission method, the method and embodiment mono-are based on same inventive concept, because the principle that the method is dealt with problems is similar to embodiment mono-data transmission method, so the enforcement of the method can, referring to the enforcement of method, repeat part and repeat no more.
As shown in Figure 4, the implementing procedure schematic diagram for terminal side data transmission method, can comprise the following steps:
S401, MTC terminal, when Idle state, send data transfer request to network side;
S402, MTC terminal receive the feedback message that network side sends;
S403, MTC terminal retransmit transmit ascending data according to the feedback message receiving.
Wherein, in the feedback message that MTC terminal receives, can carry data re-transmission number of times or carry the first maximum retransmission of HARQ, or the HARQ feedback result that carries the first maximum retransmission of HARQ and receive is the number of times of confirmation ACK signaling, or carry the second maximum retransmission of HARQ and the running time-frequency resource positional information that ARQ feedback corresponding to each transmitting uplink data used.
Based on this, in step S403, MTC terminal retransmits transmit ascending data according to the feedback message that receives, can wrap several modes below:
Mode one
If while carrying data re-transmission number of times in the feedback message that MTC terminal receives, MTC terminal is after transmit ascending data first, on the transfer resource that transmit ascending data is used first, retransmit transmit ascending data, until number of retransmissions reaches this data re-transmission number of times.
Mode two
If while carrying the first maximum retransmission of HARQ in the feedback message that MTC terminal receives, for each upstream data, no matter the HARQ feedback result of this upstream data is ACK or NACK, MTC terminal retransmits this upstream data at retransmission time, until number of retransmissions reaches the first maximum retransmission of HARQ.
Mode three
If during the number of times that the HARQ feedback result that carries the first maximum retransmission of HARQ in the feedback message that MTC terminal receives and receive is confirmation ACK signaling, for each upstream data, no matter the HARQ feedback result of this upstream data is ACK or NACK, MTC terminal retransmits transmit ascending data at retransmission time, until the number of times that number of retransmissions reaches the first maximum retransmission of HARQ or the HARQ feedback result that receives is ACK reaches preset times.
Mode four
If when carrying the second maximum retransmission of HARQ in the feedback message that MTC terminal receives and ARQ corresponding to transmitting uplink data feeding back the running time-frequency resource positional information of using at every turn, for each upstream data, no matter the HARQ feedback result of this upstream data is ACK or NACK, MTC terminal retransmits transmit ascending data at retransmission time, until number of retransmissions reaches the second maximum retransmission of HARQ; And on running time-frequency resource position corresponding to this running time-frequency resource positional information, receive network side and send ARQ feedback result.
Especially, during concrete enforcement, when if MTC terminal adopts mode three or four pairs of modes, transmit ascending data has retransmitted, if the number of times that the HARQ feedback result that MTC terminal receives is ACK does not reach preset times, or when the ARQ feedback result receiving is NACK, the data transmission method that the embodiment of the present invention provides, can also comprise the following steps:
Step 1, MTC terminal are obtained re-transmission resource, and this re-transmission resource is the upstream data that the number of times of ACK does not reach the upstream data of preset times or the ARQ feedback result that receives is NACK for retransmitting HARQ feedback result;
Step 2, in the re-transmission resource of obtaining, to retransmit HARQ feedback result be the upstream data that the number of times of ACK does not reach the upstream data of preset times or the ARQ feedback result that receives is NACK.
Wherein, MTC terminal can be obtained re-transmission resource by following any mode:
1) MTC terminal receives the re-transmission resource that network side sends, and this re-transmission resource is that network side is used MTC terminal C-RNTI for this MTC terminal distribution when connected state to distribute;
2) MTC terminal determines that the transfer resource of initiating to access at random while sending RRC connection request to network side, using is as re-transmission resource;
3) MTC terminal determine to finish current Idle state transmission mode, and while reentering connected state, the uplink transmission resource that network side is self distribution is as re-transmission resource.
Embodiment tetra-
Embodiment tetra-is the data transmission device corresponding with embodiment tri-, and as shown in Figure 5, the structural representation of the data transmission device providing for embodiment tetra-, comprising:
Transmitting element 501, for during in Idle state, sending data transfer request to network side at terminal equipment;
Receiving element 502, the feedback message sending for receiving network side;
Transmission unit 503, retransmits transmit ascending data for the feedback message that receives according to receiving element.
Wherein, in the feedback message that receiving element 502 receives, carry data re-transmission number of times, or carry the first maximum retransmission of HARQ, or carry the first maximum retransmission and the number of times of the HARQ feedback result receiving for confirmation ACK signaling of HARQ; Or carry the second maximum retransmission of HARQ and the running time-frequency resource positional information that ARQ feedback corresponding to each transmitting uplink data used.
The information of carrying in the feedback message receiving based on receiving element 502, if transmission unit 503 can be when carrying data re-transmission number of times in feedback message, after transmit ascending data first, on the transfer resource that transmit ascending data is used first, retransmit transmit ascending data, until number of retransmissions reaches described data re-transmission number of times; If while carrying the first maximum retransmission of HARQ in feedback message, at retransmission time, retransmit transmit ascending data, until number of retransmissions reaches the first maximum retransmission of HARQ; When if the HARQ feedback result that carries the first maximum retransmission of HARQ in feedback message and receive is the number of times of ACK signaling, at retransmission time, retransmit transmit ascending data, until the number of times that number of retransmissions reaches the first maximum retransmission of HARQ or the HARQ feedback result that receives is ACK reaches preset times; If when carrying the second maximum retransmission of HARQ in feedback message and ARQ corresponding to transmitting uplink data feeding back the running time-frequency resource positional information of using at every turn, at retransmission time, retransmit transmit ascending data, until number of retransmissions reaches the second maximum retransmission of HARQ; Receiving element can also be for receiving the ARQ feedback result of the transmit ascending data of network side transmission on running time-frequency resource position corresponding to this running time-frequency resource positional information.
During concrete enforcement, the data transmission device that the embodiment of the present invention provides can also comprise acquiring unit, wherein:
Acquiring unit, if the number of times that can be ACK for the HARQ feedback result receiving does not reach preset times, or when the ARQ feedback result receiving is NACK, obtain re-transmission resource, this re-transmission resource is the upstream data that the number of times of ACK does not reach the upstream data of preset times or the ARQ feedback result that receives is NACK for retransmitting HARQ feedback result;
Transmission unit 503 can also be the upstream data that the number of times of ACK does not reach the upstream data of preset times or the ARQ feedback result that receives is NACK for retransmit HARQ feedback result in this re-transmission resource.
Preferably, the re-transmission resource that acquiring unit can send for receiving network side, this re-transmission resource is that network side is used MTC terminal C-RNTI for its distribution when connected state to distribute; Or acquiring unit can be for the transfer resource determining when terminal equipment is initiated random access and sent RRC connection request to network side, use as re-transmission resource; Or specifically for determining when terminal equipment reenters connected state, network side is that the described terminal equipment uplink transmission resource of distributing is as re-transmission resource.
During concrete enforcement, above-mentioned data transmission device can be arranged in terminal equipment.
Embodiment five
As shown in Figure 6, the structural representation of the data transmission device providing for the embodiment of the present invention, comprises base station equipment 601 and terminal equipment 602, wherein, base station equipment 601 comprises the data transmission device described in embodiment bis-, and base station equipment 602 comprises the data transmission device described in embodiment tetra-.
The data transmission method that the embodiment of the present invention provides, device, system and relevant device, when MTC terminal request is carried out transfer of data under Idle state, after network side receives the request of MTC terminal, obtain the type of service that this MTC terminal is used, and the type of using according to this MTC terminal determine to need guarantees and this MTC terminal between during the reliability of transfer of data, select a kind of data re-transmission mode, according to the data re-transmission mode of selecting, to transmitting data, retransmit; For end side, the feedback message that carries out transfer of data under the Idle state returning according to the network side receiving retransmits transmitting data, due to packet loss treatment mechanism being provided in above-mentioned data transmission procedure, thereby, the reliability of transfer of data under Idle state can be guaranteed.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, implement software example or in conjunction with the form of the embodiment of software and hardware aspect completely.And the present invention can adopt the form that wherein includes the upper computer program of implementing of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code one or more.
The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be in computer program instructions realization flow figure and/or block diagram each flow process and/or the flow process in square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction of carrying out by the processor of computer or other programmable data processing device is produced for realizing the device in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame on computer or other programmable devices.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (23)
1. a data transmission method, is characterized in that, comprising:
Receive the data transfer request that machine type communication MTC terminal sends under Idle state;
Obtain the type of service of described MTC business that terminal is used;
According to described type of service, select data re-transmission mode;
According to the data re-transmission mode of selecting, transmitting downlink data is retransmitted.
2. the method for claim 1, is characterized in that, described data re-transmission mode is repeatedly transmission means of physical layer, or mixed automatic retransfer request HARQ mode, or HARQ is in conjunction with HARQ ARQ mode; And
Described method, also comprises:
To described MTC terminal, return to the feedback message of described data transfer request, wherein,
If described data re-transmission mode is physical layer repeatedly during transmission means, in described feedback message, carry data re-transmission number of times;
When if described data re-transmission mode is HARQ mode, first maximum retransmission and the number of times of the HARQ feedback result receiving for confirmation ACK signaling of in described feedback message, carrying the first maximum retransmission of HARQ or carrying HARQ;
If described re-transmission mode is HARQ during in conjunction with HARQ ARQ mode, in described feedback message, carry the second maximum retransmission of HARQ and the running time-frequency resource positional information that ARQ feedback corresponding to each downlink data transmission used.
3. method as claimed in claim 2, it is characterized in that, if while carrying data re-transmission number of times in described feedback message, according to the data re-transmission mode of determining, transmitting downlink data is retransmitted, specifically comprise: after transmitting downlink data first, on the transfer resource that transmitting downlink data is used first, retransmit transmitting downlink data, until number of retransmissions reaches described data re-transmission number of times;
If while carrying the first maximum retransmission of HARQ in described feedback message, according to the data re-transmission mode of determining, transmitting downlink data is retransmitted, specifically comprise:
At retransmission time, retransmit transmitting downlink data, until number of retransmissions reaches the first maximum retransmission of HARQ;
If when carrying the first maximum retransmission of HARQ and the HARQ feedback result that receives in described feedback message and being the number of times of ACK signaling, according to the data re-transmission mode of determining, transmitting downlink data is retransmitted, specifically comprise:
At retransmission time, retransmit transmitting downlink data, until the number of times that number of retransmissions reaches the first maximum retransmission of HARQ or the HARQ feedback result that receives is ACK reaches preset times;
If when carrying the second maximum retransmission of HARQ in described feedback message and ARQ corresponding to downlink data transmission feeding back the running time-frequency resource positional information of using at every turn, according to the data re-transmission mode of determining, transmitting downlink data is retransmitted, specifically comprises:
At retransmission time, retransmit transmitting downlink data, until number of retransmissions reaches the second maximum retransmission of HARQ; And further comprise: receive the ARQ feedback result of the transmitting downlink data of described MTC terminal transmission, described ARQ feedback result is that described MTC terminal sends on running time-frequency resource position corresponding to described running time-frequency resource positional information.
4. method as claimed in claim 3, is characterized in that, if the number of times that the HARQ feedback result receiving is ACK does not reach preset times, or the ARQ feedback result receiving is while being NACK, also comprises:
Determine re-transmission resource, described re-transmission resource is the downlink data that the number of times of ACK does not reach the downlink data of preset times or the ARQ feedback result that receives is NACK for retransmitting HARQ feedback result;
The downlink data that the number of times of retransmitting HARQ feedback result and be ACK in the re-transmission resource of determining does not reach the downlink data of preset times or the ARQ feedback result that receives is NACK.
5. method as claimed in claim 4, is characterized in that, determines re-transmission resource, specifically comprises:
The Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI of described MTC terminal is distributed in use when connected state, is described MTC terminal distribution re-transmission resource; Or
Determine when described MTC terminal is initiated random access, the transfer resource that feedback radio resource control RRC connection request is used is as re-transmission resource; Or
Determine when described MTC terminal reenters connected state, for the downlink transfer resource of described MTC terminal distribution is as re-transmission resource.
6. the method for claim 1, is characterized in that, obtains the type of service of described MTC business that terminal is used, and specifically comprises: the type of service of obtaining described MTC business that terminal is used from core net; Or in described data transfer request, carry the type of service of business that described MTC is used, and the type of service that obtains described MTC business that terminal is used, specifically comprise: the type of service of obtaining described MTC business that terminal is used from described data transfer request.
7. a data transmission device, is characterized in that, comprising:
Receiving element, the data transfer request sending under Idle state for receiving machine type communication MTC terminal;
Obtain unit, for obtaining the type of service of described MTC business that terminal is used;
Selected cell, for the type of service obtaining according to described acquisition unit, selects data re-transmission mode;
Transmission unit, for retransmitting transmitting downlink data according to selecting data re-transmission mode.
8. device as claimed in claim 7, is characterized in that, described data re-transmission mode be physical layer repeatedly transmission means or for mixed automatic retransfer request HARQ mode or for HARQ in conjunction with HARQ ARQ mode; And
Described device, also comprises:
Transmitting element for return to the feedback message of described data transfer request to described MTC terminal, wherein, if data re-transmission mode is physical layer repeatedly during transmission means, carries data re-transmission number of times in described feedback message; When if data re-transmission mode is HARQ mode, first maximum retransmission and the number of times of the HARQ feedback result receiving for confirmation ACK signaling of in described feedback message, carrying the first maximum retransmission of HARQ or in described feedback message, carrying HARQ; If data re-transmission mode is HARQ mode during in conjunction with ARQ mode, in described feedback message, carry the second maximum retransmission of HARQ and the running time-frequency resource positional information that ARQ feedback corresponding to every data transfer used.
9. device as claimed in claim 8, is characterized in that,
Described transmission unit, if when carrying data re-transmission number of times in described feedback message, after transmitting downlink data first, on the transfer resource that transmitting downlink data is used first, retransmit transmitting downlink data, until number of retransmissions reaches described data re-transmission number of times; Or
If when carrying the first maximum retransmission of HARQ in feedback message, at retransmission time, retransmit transmitting downlink data, until number of retransmissions reaches the first maximum retransmission of HARQ; Or
If while being the number of times of ACK signaling specifically for the HARQ feedback result that carries the first maximum retransmission of HARQ in feedback message and receive, at retransmission time, retransmit transmitting downlink data, until the number of times that number of retransmissions reaches the first maximum retransmission of HARQ or the HARQ feedback result that receives is ACK reaches preset times; Or
If while being the number of times of ACK signaling specifically for the HARQ feedback result that carries the first maximum retransmission of HARQ in feedback message and receive, retransmit transmitting downlink data at retransmission time, until number of retransmissions reaches the second maximum retransmission of HARQ;
Described receiving element, also, for receiving the ARQ feedback result of the transmitting downlink data of described MTC terminal transmission, described ARQ feedback result is that described MTC terminal sends on running time-frequency resource position corresponding to described running time-frequency resource positional information.
10. device as claimed in claim 9, is characterized in that, also comprises determining unit, wherein:
Described determining unit, be used for the number of times that is ACK in the HARQ feedback result receiving and do not reach preset times, or when the ARQ feedback result receiving is NACK, the re-transmission resource that the downlink data that the number of times that is identified for retransmitting HARQ feedback result and is ACK does not reach the downlink data of preset times or the ARQ feedback result that receives is NACK is used;
Described transmission unit is also the downlink data that the number of times of ACK does not reach the downlink data of preset times or the ARQ feedback result that receives is NACK for retransmit HARQ feedback result in the re-transmission resource of determining.
11. devices as claimed in claim 10, is characterized in that,
Described determining unit, specifically for using the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI of distributing to described MTC terminal when the connected state, is described MTC terminal distribution re-transmission resource; Or specifically for determining when described MTC terminal is initiated random access, the transfer resource that feedback radio resource control RRC connection request is used is as re-transmission resource; Or specifically for determining when described MTC terminal reenters connected state, for the transfer resource of described MTC terminal distribution is as re-transmission resource.
12. devices as claimed in claim 7, is characterized in that, described acquisition unit, specifically for obtaining the type of service of described MTC business that terminal is used from core net; Or when carrying the type of service of business that described MTC is used in described data transfer request, from described data transfer request, obtain the type of service of described MTC business that terminal is used.
13. 1 kinds of base station equipments, is characterized in that, comprise the device described in the arbitrary claim of claim 7 ~ 12.
14. 1 kinds of data transmission methods, is characterized in that, comprising:
When Idle state, to network side, send data transfer request; And
Receive the feedback message that network side sends;
According to described feedback message, transmit ascending data is retransmitted.
15. methods as claimed in claim 14, it is characterized in that, in described feedback message, carry the first maximum retransmission that carries HARQ in data re-transmission number of times or described feedback message, or the HARQ feedback result that carries the first maximum retransmission of HARQ in described feedback message and receive is the number of times of confirmation ACK signaling, or in described feedback message, carry the second maximum retransmission of HARQ and the running time-frequency resource positional information that ARQ feedback corresponding to each transmitting uplink data used; And
According to described feedback message, transmit ascending data is retransmitted, specifically comprises:
If while carrying data re-transmission number of times in described feedback message, after transmit ascending data first, on the transfer resource that transmit ascending data is used first, retransmit transmit ascending data, until number of retransmissions reaches described data re-transmission number of times;
If while carrying the first maximum retransmission of HARQ in described feedback message, at retransmission time, retransmit transmit ascending data, until number of retransmissions reaches the first maximum retransmission of HARQ;
If during the number of times that the HARQ feedback result that carries the first maximum retransmission of HARQ in described feedback message and receive is confirmation ACK signaling, at retransmission time, retransmit transmit ascending data, until the number of times that number of retransmissions reaches the first maximum retransmission of HARQ or the HARQ feedback result that receives is ACK reaches preset times;
If when carrying the second maximum retransmission of HARQ in described feedback message and ARQ corresponding to transmitting uplink data feeding back the running time-frequency resource positional information of using at every turn, at retransmission time, retransmit transmit ascending data, until number of retransmissions reaches the second maximum retransmission of HARQ; And further comprise: on running time-frequency resource position corresponding to described running time-frequency resource positional information, receive network side and send ARQ feedback result.
16. methods as claimed in claim 15, is characterized in that, if the number of times that the HARQ feedback result receiving is ACK does not reach preset times, or the ARQ feedback result receiving is while being NACK, also comprises:
Obtain re-transmission resource, described re-transmission resource is the upstream data that the number of times of ACK does not reach the upstream data of preset times or the ARQ feedback result that receives is NACK for retransmitting HARQ feedback result;
The upstream data that the number of times of retransmitting HARQ feedback result and be ACK in described re-transmission resource does not reach the upstream data of preset times or the ARQ feedback result that receives is NACK.
17. methods as claimed in claim 16, is characterized in that, obtain re-transmission resource, specifically comprise:
Receive the re-transmission resource that network side sends, the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI distributing when described re-transmission resource is described network side use connected state distributes; Or
The transfer resource that determine when initiating random access sends RRC connection request to network side, uses is as re-transmission resource; Or
The uplink transmission resource of determine while reentering connected state, network side distributing is as re-transmission resource.
18. 1 kinds of data transmission devices, is characterized in that, comprising:
Transmitting element, for during in Idle state, sending data transfer request to network side at terminal equipment;
Receiving element, the feedback message sending for receiving network side;
Transmission unit, for retransmitting transmit ascending data according to described feedback message.
19. devices as claimed in claim 18, it is characterized in that, in described feedback message, carry data re-transmission number of times, or in described feedback message, carry the first maximum retransmission of HARQ, or in described feedback message, carry the first maximum retransmission and the number of times of the HARQ feedback result receiving for confirmation ACK signaling of HARQ; Or in described feedback message, carry the second maximum retransmission of HARQ and the running time-frequency resource positional information that ARQ feedback corresponding to each transmitting uplink data used; And
Described transmission unit, if when carrying data re-transmission number of times in feedback message, after transmit ascending data first, on the transfer resource that transmit ascending data is used first, retransmit transmit ascending data, until number of retransmissions reaches described data re-transmission number of times; Or
If when carrying the first maximum retransmission of HARQ in described feedback message, at retransmission time, retransmit transmit ascending data, until number of retransmissions reaches the first maximum retransmission of HARQ; Or
If while being the number of times of ACK signaling specifically for the HARQ feedback result that carries the first maximum retransmission of HARQ in described feedback message and receive, at retransmission time, retransmit transmit ascending data, until the number of times that number of retransmissions reaches the first maximum retransmission of HARQ or the HARQ feedback result that receives is ACK reaches preset times; Or
If while feeding back with ARQ corresponding to each transmitting uplink data the running time-frequency resource positional information of using specifically for carrying the second maximum retransmission of HARQ in described feedback message, at retransmission time, retransmit transmit ascending data, until number of retransmissions reaches the second maximum retransmission of HARQ; And described receiving element, also for receive the ARQ feedback result of the transmit ascending data of network side transmission on running time-frequency resource position corresponding to described running time-frequency resource positional information.
20. devices as claimed in claim 19, is characterized in that, also comprise acquiring unit, wherein:
Acquiring unit, if the number of times that the HARQ feedback result that is used for receiving is ACK does not reach preset times, or when the ARQ feedback result receiving is NACK, obtain re-transmission resource, described re-transmission resource is the upstream data that the number of times of ACK does not reach the upstream data of preset times or the ARQ feedback result that receives is NACK for retransmitting HARQ feedback result;
Described transmission unit is also the upstream data that the number of times of ACK does not reach the upstream data of preset times or the ARQ feedback result that receives is NACK for retransmit HARQ feedback result in described re-transmission resource.
21. devices as claimed in claim 20, is characterized in that,
Described acquiring unit, the re-transmission resource sending specifically for receiving network side, the Cell Radio Network Temporary Identifier/Identity, Cell-RNTI C-RNTI distributing when described re-transmission resource is described network side use connected state distributes; Or specifically for the transfer resource determining when terminal equipment is initiated random access and sent RRC connection request to network side, use as re-transmission resource; Or specifically for determining when terminal equipment reenters connected state, network side is that the described terminal equipment uplink transmission resource of distributing is as re-transmission resource.
22. 1 kinds of terminal equipments, is characterized in that, comprise the device described in the arbitrary claim of claim 18 ~ 21.
23. 1 kinds of data transmission systems, it is characterized in that, comprise base station equipment and terminal equipment, wherein, described base station equipment comprises the device described in the arbitrary claim of claim 7 ~ 12, and described terminal equipment comprises the device described in the arbitrary claim of claim 18 ~ 21.
Priority Applications (2)
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| CN201210268679.3A CN103580817B (en) | 2012-07-30 | 2012-07-30 | A kind of data transmission method, device, system and relevant device |
| PCT/CN2013/079007 WO2014019441A1 (en) | 2012-07-30 | 2013-07-08 | Method, apparatus, system, and related device for data transmission |
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| CN201210268679.3A CN103580817B (en) | 2012-07-30 | 2012-07-30 | A kind of data transmission method, device, system and relevant device |
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| WO2014019441A1 (en) | 2014-02-06 |
| CN103580817B (en) | 2016-12-21 |
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