CN105850068B - A kind of data packet transfer device and method - Google Patents

A kind of data packet transfer device and method Download PDF

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Publication number
CN105850068B
CN105850068B CN201480035961.4A CN201480035961A CN105850068B CN 105850068 B CN105850068 B CN 105850068B CN 201480035961 A CN201480035961 A CN 201480035961A CN 105850068 B CN105850068 B CN 105850068B
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data packet
equipment
base station
feedback
terminal
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CN105850068A (en
Inventor
王娟
朱松
于映辉
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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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

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present invention provides a kind of data packet transfer device and methods, to solve NB M2M system in carrying out upstream or downstream transmission of data packets, existing each unbalanced problem of packet transmission time.The method of the present invention includes: the first equipment according to the maximum transmission time of data packet setting timer；When the first equipment is to the second equipment transmission data packet, the first equipment starts timer；First equipment receives the data packet reception result of the second equipment feedback, and when data packet reception result is data packet reception failure message and timer has not timed out, the first equipment retransmits data packet to the second equipment；Alternatively, the first equipment receives the data packet reception result of the second equipment feedback, and when data packet reception result is that data packet receives success message and timer has not timed out, the first equipment Off Timer；Alternatively, the first equipment receives the data packet reception result of the second equipment feedback, when data packet reception result is data packet reception failure message and timer expiry, the first equipment is abandoned to the second equipment transmission data packet.

Description

A kind of data packet transfer device and method
Technical field
The present invention relates to the communications field more particularly to a kind of data packet transfer device and methods.
Background technique
In narrowband in machine to machine (NarrowBand Machine to Machine, NB M2M) system, due to NB The business that M2M system is directed to is small data packets business, and NB M2M system has single data packet processing time length, transmission rate Low feature, therefore NB M2M system requirements terminal has the characteristics that at low cost, power consumption is low.
The transmission of upstream or downstream data packet retransmits (Hybrid using the hybrid automatic request of one process in NB M2M system Automatic Repeat request, HARQ) scheme.One process HARQ scheme refers to that transmitting terminal transmits one to receiving end After data packet, the reception result of the data packet is fed back in transmitting terminal waiting receiving end；If receiving end receives data packet success, Transmitting terminal can receive the successful message of the reception data packet of receiving end feedback, and transmitting terminal continues under transmission to receiving end at this time One data packet for needing to transmit；If receiving end receives data packet failure, transmitting terminal can receive receiving end feedback The data packet failure news is received, transmitting terminal retransmits the data packet to receiving end at this time.
In the transmission process of the upstream or downstream data packet of NB M2M system, pass through in existing one process HARQ scheme Data packet maximum retransmission limits transmitting terminal to the number that receiving end retransmits data packet, is easy to appear each data packet The unbalanced situation of transmission time.
Summary of the invention
The embodiment of the invention provides a kind of data packet transfer device and methods, to solve NB M2M system on carrying out During capable or downstream packet transmission, existing each unbalanced problem of packet transmission time.
In a first aspect, the embodiment of the present invention provides a kind of data packet transfer device, comprising:
Data packet transmission unit is used for the second equipment transmission data packet；
Timer management unit, for timer to be arranged according to the maximum transmission time of data packet；When data packet transmits list When member is to the second equipment transmission data packet, start timer；
Feedback processing unit, for receiving the number of the second equipment feedback after timer management unit starting timer According to packet reception result, when data packet reception result is data packet reception failure message and timer has not timed out, trigger data packet Transmission unit retransmits data packet to the second equipment；Or
For receiving the data packet reception result of the second equipment feedback after timer management unit starting timer, When data packet reception result is that data packet receives success message and timer has not timed out, triggering timer management unit is closed Timer；Or
For receiving the data packet reception result of the second equipment feedback after timer management unit starting timer, When data packet reception result be data packet reception failure message and timer expiry when, notification data packet transmission unit abandon to Second equipment transmission data packet.
With reference to first aspect, in the first possible implementation, feedback processing unit trigger data packet transmission unit When retransmitting data packet to the second equipment, it is specifically used for:
When received data packet fails the second equipment in data packet maximum receiving time, feedback processing unit receives second The data packet reception failure message of equipment feedback, wherein data packet maximum receiving time refers to that the second equipment receives a data Wrap permitted maximum time；
Timer has not timed out, and feedback processing unit trigger data packet transmission unit retransmits data packet to the second equipment.
With reference to first aspect or the first possible implementation of first aspect, second in first aspect are possible In implementation, the second equipment is terminal or the second equipment is base station.
With reference to first aspect, in the third possible implementation, when the second equipment is terminal, feedback processing unit When receiving the data packet reception result of the second equipment feedback, it is specifically used for:
Feedback processing unit receives knot by the data packet that physical uplink shared channel PUSCH receives terminal feedback Fruit.
With reference to first aspect, in the fourth possible implementation, when the second equipment is base station, feedback processing unit When receiving the data packet reception result of the second equipment feedback, it is specifically used for:
Feedback processing unit receives the data packet reception result of base station feedback by Downlink Control Information DCI.
With reference to first aspect, in a fifth possible implementation, if the second equipment is terminal, the device further include:
Resource allocation unit, for passing through downlink in preset duration after timer management unit starting timer Control information DCI is terminal distribution ascending resource, and ascending resource is received to feedback processing unit feedback data packet for terminal and tied Fruit.
The 5th kind of possible implementation with reference to first aspect, in the 6th kind of possible implementation of first aspect In, resource allocation unit in preset duration by DCI be terminal distribution ascending resource after, if feedback processing unit is in uplink The data packet reception result and timer that terminal feedback is not received in resource have not timed out, and resource allocation unit is also used to:
Resource allocation unit is that terminal redistributes ascending resource by DCI in preset duration, and ascending resource is for eventually It holds to feedback processing unit feedback data packet reception result.
With reference to first aspect, in the 7th kind of possible implementation, if the second equipment is base station, feedback processing unit is also For:
If data packet transmission unit to this data packet transmitted of base station be the last one data packet for transmitting of needs, when Feedback processing unit is not received by the data packet reception result of base station feedback and when timer has not timed out, feedback processing unit Confirm the success of base station received data packet, and triggers timer management unit Off Timer.
In the embodiment of the present invention, timer is arranged according to the maximum transmission time of data packet by timer management unit, When data packet transmission unit is to the second equipment transmission data packet, timer management unit starting timer passes through data packet Maximum transmission time limits data packet transmission unit to the time of the second equipment transmission data packet, when the second equipment receives When data packet fails, data packet transmission unit retransmits the data packet to the second equipment in data packet maximum transmission time.This hair Bright embodiment is in the transmission process of upstream or downstream data packet for realizing NB M2M system, so that each packet transmission time It is balanced；Overcome in the prior art by data packet maximum retransmission to transmitting terminal to receiving end retransmit data packet number into Row limitation, and the unbalanced problem of each packet transmission time generated.
Second aspect, the embodiment of the present invention provide a kind of data packet transfer device, comprising:
Data packet receiving unit, for receiving the data packet of the first equipment transmission；
Timer management unit, for timer to be arranged according to data packet maximum receiving time；When data packet receiving unit When receiving the data packet of the first equipment transmission, start timer；
Feedback processing unit is used for after timer management unit starting timer, to the first equipment feedback data packet Reception result, when data packet reception result is data packet reception failure message and timer has not timed out, trigger data packet is received Unit receives the data packet that the first equipment retransmits；Or
For to the first equipment feedback data packet reception result, working as number after timer management unit starting timer According to packet reception result for data packet reception success message and when timer has not timed out, timer management unit timeing closing is triggered Device；Or
For to the first equipment feedback data packet reception result, working as number after timer management unit starting timer When according to packet reception result being data packet failed message and timer expiry, notification data packet receiving unit is abandoned receiving and first be set The data packet of standby transmission.
In conjunction with second aspect, in the first possible implementation, the first equipment is base station；Or first equipment be eventually End.
In conjunction with second aspect, in the second possible implementation, when the first equipment is base station, feedback processing unit When to the first equipment feedback data packet reception result, it is specifically used for:
Feedback processing unit passes through physical uplink shared channel PUSCH to base station feedback data packet reception result.
In conjunction with second aspect, in the third possible implementation, when the first equipment is terminal, feedback processing unit When to the first equipment feedback data packet reception result, it is specifically used for:
Feedback processing unit passes through Downlink Control Information DCI to terminal feedback data packet reception result.
In conjunction with second aspect, in the fourth possible implementation, if the first equipment is base station, the device further include:
Resource receiving unit, for passing through downlink in preset duration after timer management unit starting timer It controls information DCI and receives base station as the ascending resource of its distribution, ascending resource is used for feedback processing unit to base station feedback data Packet reception result.
In conjunction with the 4th kind of possible implementation of second aspect, in the 5th kind of possible realization of second aspect, money After source receiving unit receives ascending resource of the base station for its distribution by DCI in preset duration, if base station is in ascending resource On do not receive the data packet reception result of feedback processing unit feedback, resource allocation unit is also used to:
Resource receiving unit receives the ascending resource that base station is redistributed for it, uplink money by DCI in preset duration Source is used for feedback processing unit to base station feedback data packet reception result.
In conjunction with second aspect, in a sixth possible implementation, if the first equipment is terminal, data packet receiving unit The data packet of this transmission of received terminal is to need the last one received data packet, then when data packet receiving unit receives eventually When the data packet success of end transmission, feedback processing unit does not need to receive success message to terminal feedback data packet.
In the embodiment of the present invention, timer is arranged according to data packet maximum receiving time by timer management unit, when When data packet receiving unit receives the data packet of the first equipment transmission, timer management unit starting timer passes through data It wraps maximum receiving time to limit the time of data packet receiving unit received data packet, when data packet receiving unit receives number When according to packet failure, data packet receiving unit receives the data packet of the first equipment re-transmission in data packet maximum receiving time.This hair Bright embodiment is in the transmission process of upstream or downstream data packet for realizing NB M2M system, so that each packet transmission time It is balanced；Overcome in the prior art by data packet maximum retransmission to transmitting terminal to receiving end retransmit data packet number into Row limitation, and the unbalanced problem of each packet transmission time generated.
The third aspect, the embodiment of the present invention provide a kind of data pack transmission method, comprising:
Timer is arranged according to the maximum transmission time of data packet in first equipment；
When the first equipment is to the second equipment transmission data packet, the first equipment starts timer；
First equipment receives the data packet reception result of the second equipment feedback, when data packet reception result is data packet reception Failed message and when timer has not timed out, the first equipment retransmits data packet to the second equipment；Or
First equipment receives the data packet reception result of the second equipment feedback, when data packet reception result is data packet reception Success message and when timer has not timed out, the first equipment Off Timer；Or
First equipment receives the data packet reception result of the second equipment feedback, when data packet reception result is data packet reception When failed message and timer expiry, the first equipment is abandoned to the second equipment transmission data packet.
In conjunction with the third aspect, in the first possible implementation, the first equipment receives the data of the second equipment feedback Packet reception result, when data packet reception result is that data packet reception failure message and timer have not timed out, the first equipment is to the Two equipment retransmit data packet, comprising:
When received data packet fails the second equipment in data packet maximum receiving time, the first equipment receives the second equipment The data packet reception failure message of feedback, wherein data packet maximum receiving time refers to that the second equipment receives a data packet institute The maximum time of permission；
Timer has not timed out, and the first equipment retransmits data packet to the second equipment.
In conjunction with the possible implementation of the first of the third aspect or the third aspect, second in the third aspect is possible In implementation,
If the first equipment is base station, the second equipment is terminal；Or
If the first equipment is terminal, the second equipment is base station.
In conjunction with the third aspect, in the third possible implementation, when the first equipment is base station, the second equipment is terminal When, the first equipment receives the data packet reception result of the second equipment feedback, comprising:
Base station receives the data packet reception result of terminal feedback by physical uplink shared channel PUSCH.
In conjunction with the third aspect, in the fourth possible implementation, when the first equipment is terminal, the second equipment is base station When, the first equipment connects the data packet reception result of the second equipment feedback, comprising:
Terminal receives the data packet reception result of base station feedback by Downlink Control Information DCI.
In conjunction with the third aspect, in a fifth possible implementation, if the first equipment is base station, the second equipment is eventually End, after the first equipment starts timer, this method further include:
Base station is terminal distribution ascending resource by Downlink Control Information DCI in preset duration, and ascending resource is for eventually It holds to base station feedback data packet reception result.
In conjunction with the 5th kind of possible implementation of the third aspect, in the 6th kind of possible implementation of the third aspect In, after base station is terminal distribution ascending resource by DCI in preset duration, if base station does not receive on ascending resource The data packet reception result and timer of terminal feedback have not timed out, this method further include:
Base station is that terminal redistributes ascending resource by DCI in preset duration, and ascending resource is used for terminal to base station Feedback data packet reception result.
In conjunction with the third aspect, in the 7th kind of possible implementation, if the first equipment is terminal, the second equipment is base It stands, this method further include:
If terminal is to the last one data packet that this data packet transmitted of base station is that needs transmit, when terminal does not connect Receive the data packet reception result of base station feedback and when timer has not timed out, the success of terminal check base station received data packet, and close Close timer.In the embodiment of the present invention, timer is arranged according to the maximum transmission time of data packet by the first equipment, when first When equipment is to the second equipment transmission data packet, the first equipment starts timer, i.e., by data packet maximum transmission time to first Equipment was limited to the time of the second equipment transmission data packet, and when the failure of the second equipment received data packet, the first equipment exists The data packet is retransmitted to the second equipment in data packet maximum transmission time.The embodiment of the present invention is in the uplink for realizing NB M2M system Or in the transmission process of downlink data packet, so that each packet transmission time is balanced；It overcomes and passes through data in the prior art Each data packet transmission that packet maximum retransmission is limited to the number that receiving end retransmits data packet to transmitting terminal, and generated Time unbalanced problem.
Fourth aspect, the embodiment of the present invention provide a kind of data pack transmission method, comprising:
Timer is arranged according to data packet maximum receiving time in second equipment；
When the second equipment receives the data packet of the first equipment transmission, the second equipment starts timer；
Second equipment is to the first equipment feedback data packet reception result, when data packet reception result is data packet reception failure Message and when timer has not timed out, the second equipment receives the data packet that the first equipment retransmits；Or
Second equipment is to the first equipment feedback data packet reception result, when data packet reception result is that data packet receives successfully Message and when timer has not timed out, the second equipment Off Timer；Or
Second equipment is to the first equipment feedback data packet reception result, when data packet reception result is that data packet unsuccessfully disappears When breath and timer expiry, the second equipment abandons receiving the data packet of the first equipment transmission.
In conjunction with fourth aspect, in the first possible implementation,
If the second equipment is terminal, the first equipment is base station；Or
If the second equipment is base station, the first equipment is terminal.
In conjunction with fourth aspect, in the second possible implementation, when the first equipment is base station, the second equipment is terminal When the second equipment to the first equipment feedback data packet reception result, comprising:
Terminal passes through physical uplink shared channel PUSCH to base station feedback data packet reception result.
In conjunction with fourth aspect, in the third possible implementation, when the first equipment is terminal, the second equipment is base station When, the second equipment is to the first equipment feedback data packet reception result, comprising:
Base station passes through Downlink Control Information DCI to terminal feedback data packet reception result.
In conjunction with fourth aspect, in the fourth possible implementation, if the first equipment is base station, the second equipment is eventually End, after the second equipment starts timer, this method further include:
Terminal receives base station by Downlink Control Information DCI in preset duration as the ascending resource of its distribution, and uplink provides Source is used for terminal to base station feedback data packet reception result.
In conjunction with the 4th kind of possible implementation of fourth aspect, in the 5th kind of possible implementation of fourth aspect In, after terminal receives ascending resource of the base station for its distribution by DCI in preset duration, if base station is on ascending resource Do not receive the data packet reception result of terminal feedback, this method further include:
Terminal receives the ascending resource that base station is redistributed for it by DCI in preset duration, and ascending resource is for eventually It holds to base station feedback data packet reception result.
In conjunction with fourth aspect, in a sixth possible implementation, if the first equipment is terminal, the second equipment is base It stands, the data packet of this transmission of the received terminal in base station is to need the last one received data packet, then when base station receives terminal When the data packet success of transmission, base station does not need to receive success message to terminal feedback data packet.
In the embodiment of the present invention, timer is arranged according to data packet maximum receiving time by the second equipment, is set when second When the standby data packet for receiving the transmission of the first equipment, the second equipment starts timer, i.e., by data packet maximum receiving time to the The time of two equipment received data packets is limited, when the second equipment received data packet failure when, the second equipment data packet most The data packet that the first equipment retransmits is received in big receiving time.The embodiment of the present invention is in the upstream or downstream for realizing NB M2M system In the transmission process of data packet, so that each packet transmission time is balanced；It overcomes in the prior art through data packet maximum Number of retransmissions limits transmitting terminal to the number that receiving end retransmits data packet, and each packet transmission time generated is not Balanced problem.
Detailed description of the invention
Fig. 1 is a kind of data packet transfer device structural schematic diagram provided in an embodiment of the present invention；
Fig. 2 is a kind of data packet transfer device structural schematic diagram provided in an embodiment of the present invention；
Fig. 3 is a kind of data pack transmission method flow diagram provided in an embodiment of the present invention；
Fig. 4 is a kind of data pack transmission method flow diagram provided in an embodiment of the present invention；
Fig. 5 is a kind of downstream packet transmission method flow schematic diagram provided in an embodiment of the present invention；
Fig. 6 is a kind of upstream data package transmission method flow diagram provided in an embodiment of the present invention；
Fig. 7 is the structural schematic diagram of Downlink Control Information DCI gap periods provided in an embodiment of the present invention；
Fig. 8 is a kind of data packet transfer device structural schematic diagram provided in an embodiment of the present invention；
Fig. 9 is a kind of data packet transfer device structural schematic diagram provided in an embodiment of the present invention.
Specific embodiment
The embodiment of the invention provides a kind of data packet transfer device and methods, to solve NB M2M system on carrying out During capable or downstream packet transmission, existing each unbalanced problem of packet transmission time.
Data are retransmitted to receiving end to transmitting terminal by data packet maximum retransmission in existing one process HARQ scheme The number of packet is limited, i.e., fails when receiving end receives the data packet that transmitting terminal retransmits, and transmitting terminal is retransmitted to receiving end and is somebody's turn to do When the number of data packet is more than data packet maximum retransmission, transmitting terminal is abandoned retransmitting the data packet to receiving end.Due to NB Frequency resource in M2M system is limited, and the transmission time of each data packet is influenced very big by channel quality, therefore will appear Some packet transmission time is longer, and the situation that the transmission time of other data packets is shorter, if still using maximum re-transmission time Number counterweight biography is defined, it may appear that the unbalanced situation of the maximum transmission time of each data packet.
In the embodiment of the present invention, the time of data packet is transmitted to receiving end to transmitting terminal by data packet maximum transmission time It is limited, when the failure of receiving end received data packet, transmitting terminal retransmits in data packet maximum transmission time to receiving end should Data packet.Therefore the embodiment of the present invention is in the transmission process of upstream or downstream data packet for realizing NB M2M system, so that respectively A packet transmission time is balanced；It overcomes heavy to receiving end to transmitting terminal by data packet maximum retransmission in the prior art The number for passing data packet is limited, and the unbalanced problem of each packet transmission time generated.
The serial number of the embodiment of the present invention only represents the sequencing of embodiment, does not represent the excellent of embodiment.
Embodiment one
As shown in Figure 1, device shown in FIG. 1 supports Fig. 3 institute the embodiment of the invention provides a kind of data packet transfer device The method shown, the device include:
Data packet transmission unit 11 is used for the second equipment transmission data packet；
Timer management unit 12, for timer to be arranged according to the maximum transmission time of data packet；When data packet is transmitted When unit 11 is to the second equipment transmission data packet, start timer；
Feedback processing unit 13, for after timer management unit 12 starts timer, receiving the second equipment feedback Data packet reception result trigger number when data packet reception result is that data packet reception failure message and timer have not timed out Data packet is retransmitted to the second equipment according to packet transmission unit 11；Or
Data packet for after timer management unit 12 starts timer, receiving the second equipment feedback receives knot Fruit triggers timer management unit 12 when data packet reception result is that data packet receives success message and timer has not timed out Off Timer；Or
Data packet for after timer management unit 12 starts timer, receiving the second equipment feedback receives knot Fruit, when data packet reception result is data packet reception failure message and timer expiry, notification data packet transmission unit 11 is put It abandons to the second equipment transmission data packet.
Preferably, when 13 trigger data packet transmission unit 11 of feedback processing unit retransmits data packet to the second equipment, specifically For:
When received data packet fails the second equipment in data packet maximum receiving time, feedback processing unit 13 receives the The data packet reception failure message of two equipment feedback, wherein data packet maximum receiving time refers to that the second equipment receives a number According to the permitted maximum time of packet；
Timer has not timed out, and 13 trigger data packet transmission unit 11 of feedback processing unit retransmits data packet to the second equipment.
Preferably, the second equipment is terminal or the second equipment is base station.
Preferably, feedback processing unit 13 connects in the data packet for receiving the second equipment feedback when the second equipment is terminal When receiving result, it is specifically used for:
Feedback processing unit 13 receives knot by the data packet that physical uplink shared channel PUSCH receives terminal feedback Fruit.
Preferably, feedback processing unit 13 connects in the data packet for receiving the second equipment feedback when the second equipment is base station When receiving result, it is specifically used for:
Feedback processing unit 13 receives the data packet reception result of base station feedback by Downlink Control Information DCI.
Preferably, if the second equipment is terminal, the device further include:
Resource allocation unit 14, for passing through after timer management unit 12 starts timer in preset duration Downlink Control Information DCI is terminal distribution ascending resource, and ascending resource is used for terminal to 13 feedback data packet of feedback processing unit Reception result.
Preferably, resource allocation unit 14 in preset duration by DCI be terminal distribution ascending resource after, if feedback The data packet reception result of terminal feedback is not received on ascending resource for processing unit 13 and timer has not timed out, resource point It is also used to unit 14:
Resource allocation unit 14 is that terminal redistributes ascending resource by DCI in preset duration, and ascending resource is used for Terminal is to 14 feedback data packet reception result of feedback processing unit.
Preferably, feedback processing unit 13 is also used to if the second equipment is base station:
If data packet transmission unit 11 to this data packet transmitted of base station be the last one data packet for transmitting of needs, When feedback processing unit 13 is not received by the data packet reception result of base station feedback and timer has not timed out, feedback processing Unit 13 confirms the success of base station received data packet, and triggers 12 Off Timer of timer management unit.
By data packet transmission unit 11 in embodiment one, timer management unit 12, feedback processing unit 13 and Specifically timer is arranged according to the maximum transmission time of data packet by timer management unit 12 in resource allocation unit 14, When data packet transmission unit 11 is to the second equipment transmission data packet, timer management unit 12 starts timer, that is, passes through number Data packet transmission unit 11 was limited to the time of the second equipment transmission data packet according to packet maximum transmission time, is set when second When standby received data packet failure, data packet transmission unit 11 retransmits the data to the second equipment in data packet maximum transmission time Packet.The embodiment of the present invention one is in the transmission process of upstream or downstream data packet for realizing NB M2M system, so that each data Packet transmission time is balanced；It overcomes and data is retransmitted to receiving end to transmitting terminal by data packet maximum retransmission in the prior art The number of packet is limited, and the unbalanced problem of each packet transmission time generated.
Embodiment two
As shown in Fig. 2, device shown in Fig. 2 supports Fig. 4 institute the embodiment of the invention provides a kind of data packet transfer device The method shown, the device include:
Data packet receiving unit 21, for receiving the data packet of the first equipment transmission；
Timer management unit 22, for timer to be arranged according to data packet maximum receiving time；When data packet receives list When member 21 receives the data packet of the first equipment transmission, start timer；
Feedback processing unit 23 is used for after timer management unit 22 starts timer, to the first equipment feedback coefficient According to packet reception result, when data packet reception result is data packet reception failure message, timer has not timed out, trigger data packet is connect It receives unit 21 and receives the data packet that the first equipment retransmits；Or
For after timer management unit 22 starts timer, to the first equipment feedback data packet reception result, when When data packet reception result is that data packet receives success message and timer has not timed out, triggering timer management unit 22 is closed Timer；Or
For after timer management unit 22 starts timer, to the first equipment feedback data packet reception result, when When data packet reception result is data packet failed message and timer expiry, notification data packet receiving unit 21 abandons reception the The data packet of one equipment transmission.
Preferably, the first equipment is base station；Or first equipment be terminal.
Preferably, feedback processing unit 23 is to the first equipment feedback data packet reception result when the first equipment is base station When, it is specifically used for:
Feedback processing unit 23 passes through physical uplink shared channel PUSCH to base station feedback data packet reception result.
Preferably, feedback processing unit 23 is to the first equipment feedback data packet reception result when the first equipment is terminal When, it is specifically used for:
Feedback processing unit 23 passes through Downlink Control Information DCI to terminal feedback data packet reception result.
Preferably, if the first equipment is base station, the device further include:
Resource receiving unit 24, for passing through after timer management unit 22 starts timer in preset duration Downlink Control Information DCI receives base station as the ascending resource of its distribution, and ascending resource is anti-to base station for feedback processing unit 23 Present data packet reception result.
Preferably, resource receiving unit 24 in preset duration by DCI receive base station for its distribution ascending resource it Afterwards, if base station does not receive the data packet reception result of the feedback of feedback processing unit 23, resource allocation unit on ascending resource 24 are also used to:
Resource receiving unit 24 receives the ascending resource that base station is redistributed for it, uplink by DCI in preset duration Resource is used for feedback processing unit 23 to base station feedback data packet reception result.
Preferably, the data packet of this transmission of the received terminal of data packet receiving unit 21 is if the first equipment is terminal Need the last one received data packet, then when data packet receiving unit 21 receives the data packet success of terminal transmission, feedback Processing unit 23 does not need to receive success message to terminal feedback data packet.
By data packet receiving unit 21 in embodiment two, timer management unit 22, feedback processing unit 23 and Resource receiving unit 24 is specifically arranged timer according to data packet maximum receiving time by timer management unit, works as number When receiving the data packet of the first equipment transmission according to packet receiving unit, timer management unit starting timer passes through data packet Maximum receiving time limits the time of data packet receiving unit received data packet, when data packet receiving unit receives data When packet failure, data packet receiving unit receives the data packet of the first equipment re-transmission in data packet maximum receiving time.The present invention Embodiment is in the transmission process of upstream or downstream data packet for realizing NB M2M system, so that each packet transmission time is equal Weighing apparatus；It overcomes and transmitting terminal is carried out to the number that receiving end retransmits data packet by data packet maximum retransmission in the prior art Limitation, and the unbalanced problem of each packet transmission time generated.
Embodiment three
As shown in figure 3, the embodiment of the invention provides a kind of data pack transmission method, this method packets in the first equipment side It includes:
Timer is arranged according to the maximum transmission time of data packet in S301, the first equipment；
S302, when the first equipment is to the second equipment transmission data packet, the first equipment starts timer；
S303, the first equipment receive the data packet reception result of the second equipment feedback, when data packet reception result is data Packet reception failure message and when timer has not timed out, the first equipment retransmits data packet to the second equipment；Or
First equipment receives the data packet reception result of the second equipment feedback, when data packet reception result is data packet reception Success message and when timer has not timed out, the first equipment Off Timer；Or
First equipment receives the data packet reception result of the second equipment feedback, when data packet reception result is data packet reception When failed message and timer expiry, the first equipment is abandoned to the second equipment transmission data packet.
In data pack transmission method shown in Fig. 3, if the first equipment is base station, the second equipment is terminal, and Fig. 3 is at this time The operation of base station side in NB M2M system descending transmission of data packets；If the first equipment is terminal, the second equipment is base station, this When Fig. 3 be NB M2M system uplink transmission of data packets in terminal side operation.
Preferably, the first equipment receives the data packet reception result of the second equipment feedback in S303, tied when data packet receives For fruit for data packet reception failure message and when timer has not timed out, the first equipment retransmits data packet to the second equipment, comprising:
When received data packet fails the second equipment in data packet maximum receiving time, the first equipment receives the second equipment The data packet reception failure message of feedback, wherein data packet maximum receiving time refers to that the second equipment receives a data packet institute The maximum time of permission；
Timer has not timed out, and the first equipment retransmits data packet to the second equipment.
It should be noted that the first equipment to the number that the second equipment retransmits same data packet can be multiple, Mei Dang When one equipment receives the received data packet failure news of the second equipment feedback in data packet maximum transmission time, first is set It is standby just to retransmit the data packet to the second equipment.
Preferably, in S303 when data packet reception result is that data packet receives success message and timer has not timed out, the One equipment Off Timer, the first equipment and the second equipment complete this data packet in data packet maximum transmission time at this time Transmission, the next data packet for needing to transmit if it exists, the first equipment are transmitted in method shown in Fig. 3 to the second equipment next Data packet.
Preferably, the first equipment receives the data packet reception result of the second equipment feedback in S303, comprising:
When the first equipment is base station, and the second equipment is terminal, base station passes through physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) receives the data packet reception result of terminal feedback；Or
When the first equipment is terminal, and the second equipment is base station, terminal passes through Downlink Control Information (Downlink Control Information, DCI) receive base station feedback data packet reception result.
Preferably, the second equipment is terminal, and Fig. 3 show NB M2M system descending number at this time if the first equipment is base station According to the operation of base station side in packet transmission process, after the first equipment of S302 starts timer, this method further include:
Base station is terminal distribution ascending resource by Downlink Control Information DCI in preset duration, and ascending resource is for eventually It holds to base station feedback data packet reception result.
Wherein, preset duration refers to that base station is the maximum time length that terminal distribution ascending resource allows to occupy, i.e., default The maximum duration of the base station Shi Changwei progress downstream feedback scheduling of resource；Preset duration can be preset with a timer come timing Duration can be as unit of Downlink Control Information DCI gap periods, be also possible to as unit of other times length, such as milli Second, second etc., wherein DCI gap periods refer to that the time interval between two neighboring DCI, DCI gap periods can be according to business Or system features are configured, and do not limit DCI gap periods in the present invention specifically；Terminal needs receive base station in preset duration All DCI sent are used for the ascending resource of feedback data packet reception result until obtaining.
Such as: Fig. 7 is the structural schematic diagram of Downlink Control Information DCI gap periods, in the diagram between two neighboring DCI Time interval be 32 time slots, DCI carry information may include the finger for being used for transmission the upstream or downstream resource of data packet Show data packet reception result in information and upstream data packet transmission process.During downstream packet transmission, base station is eventually The instruction information of the downlink resource of distribution and the instruction information of ascending resource are held, can be carried in different DCI, it can also be with It is carried in same DCI, wherein instruction information is used to indicate the position of downlink resource or the position of ascending resource, downlink resource is used In base station to terminal transmission data packet, ascending resource is used for terminal to base station feedback data packet reception result；The finger of downlink resource Show the resource that the instruction information for the resource and ascending resource that information occupies occupies, base station is included at least in time interval to terminal Transmit the sum of data packet required time and required processing time after terminal received data packet.
Conventionally, as NB M2M system mid band resource is limited, not dedicated for receiving end to transmitting terminal The feedback resources of feedback data packet reception result.By reserving fixed feedback resources in existing HARQ scheme, for receiving The reception result to transmitting terminal feedback data packet is held, length the time required in NB M2M system due to the transmission of each data packet It is inconsistent, therefore using the method for reserving fixed feedback resources before transmitting data packet, it be easy to cause the wasting of resources.In this hair In bright embodiment, base station is used for feedback coefficient in preset duration by base station to after terminal transmission data packet for terminal distribution According to the method for the ascending resource of packet reception result, overcomes and reserve fixed feedback resources in NB M2M system using the prior art And the problem of resulting in waste of resources.Base station is to after terminal transmission data packet, and base station starts feedback window, and feedback window is for providing Preset duration, terminal only need to monitor the DCI in preset duration as defined in feedback window, can obtain connecing for feedback data packet The ascending resource for receiving result, thereby reduces the power consumption of terminal.
Preferably, base station in preset duration by DCI be terminal distribution ascending resource after, if base station is in ascending resource On do not receive terminal feedback data packet reception result and timer have not timed out, this method further include:
Base station is that terminal redistributes ascending resource by DCI in preset duration, and ascending resource is used for terminal to base station Feedback data packet reception result.
During downstream packet transmission, it is contemplated that base station receives the feelings of the data packet reception result failure of terminal feedback Condition, the embodiment of the present invention are that terminal is redistributed for feedback data packet reception knot by DCI in preset duration by base station The ascending resource of fruit, in this way, terminal can using the ascending resource redistributed to base station feedback data packet reception result, into And solves the problems, such as the failure of base station received data packet reception result.Base station is caused to receive the data packet reception result of terminal feedback There are two types of the reason of the case where failure: first is that terminal receives base station as the ascending resource failure of its distribution, ascending resource is for anti- Present data packet reception result；Second is that terminal is failed using ascending resource to base station feedback data packet reception result.
Preferably, the second equipment is base station, this method if the first equipment is terminal further include:
If terminal is to the last one data packet that this data packet transmitted of base station is that needs transmit, when terminal does not connect Receive the data packet reception result of base station feedback and when timer has not timed out, the success of terminal check base station received data packet, and close Close timer.
For upstream data packet transmission process, if terminal to this data packet transmitted of base station be needs transmit last A data packet, there is still a need for terminal feedback data packet reception result for base station in the prior art.In embodiments of the present invention, work as base station When being properly received the last one data packet of terminal transmission, base station does not need to receive successful message to terminal feedback data packet, The signaling used when base station sends resource scheduling information to terminal can be reduced in this way, and then reaches the mesh for saving frequency spectrum resource 's.
In upstream data packet transmission process, if terminal is not required to the last of transmission to this data packet transmitted of base station One data packet, and base station received data packet success, terminal receive base station feedback data packet receive success message while, Base station is received as the ascending resource of its distribution, which transmits next data packet to base station for terminal.
In embodiment three, timer is arranged according to the maximum transmission time of data packet by the first equipment, when the first equipment When to the second equipment transmission data packet, the first equipment starts timer, i.e., by data packet maximum transmission time to the first equipment It is limited to the time of the second equipment transmission data packet, when the failure of the second equipment received data packet, the first equipment is in data The data packet is retransmitted to the second equipment in packet maximum transmission time.The embodiment of the present invention realize NB M2M system uplink or under In the transmission process of row data packet, so that each packet transmission time is balanced；It overcomes and passes through data packet most in the prior art Each packet transmission time that big number of retransmissions is limited to the number that receiving end retransmits data packet to transmitting terminal, and generated Unbalanced problem.
Example IV
As shown in figure 4, the embodiment of the invention provides a kind of data pack transmission method, this method packets in the second equipment side It includes:
Timer is arranged according to data packet maximum receiving time in S401, the second equipment；
S402, when the second equipment receive the first equipment transmission data packet when, the second equipment start timer；
S403, the second equipment are to the first equipment feedback data packet reception result, when data packet reception result connects for data packet When receiving failed message and timer and having not timed out, the second equipment receives the data packet that the first equipment retransmits；Or
Second equipment is to the first equipment feedback data packet reception result, when data packet reception result is that data packet receives successfully Message and when timer has not timed out, the second equipment Off Timer；Or
Second equipment is to the first equipment feedback data packet reception result, when data packet reception result is that data packet unsuccessfully disappears When breath and timer expiry, the second equipment abandons receiving the data packet of the first equipment transmission.
In data pack transmission method shown in Fig. 4, if the first equipment is base station, the second equipment is terminal, and Fig. 4 is at this time The operation of terminal side in NB M2M system descending transmission of data packets；If the first equipment is terminal, the second equipment is base station, this When Fig. 4 be NB M2M system uplink transmission of data packets in base station side operation.
In S403 when data packet reception result is that data packet receives success message and timer has not timed out, the second equipment Off Timer, the second equipment completes the reception of this data packet in data packet maximum receiving time at this time, needs if it exists Received next data packet, the second equipment continue to next data packet of the first equipment transmission in method shown in Fig. 4.
Preferably, the second equipment is to the first equipment feedback data packet reception result in S403, comprising:
When the first equipment be base station, the second equipment be terminal when, terminal by physical uplink shared channel PUSCH to Base station feedback data packet reception result；Or
Base station passes through Downlink Control Information DCI to terminal feedback data packet reception result.
Preferably, the second equipment is terminal if the first equipment is base station, and after the second equipment starts timer, the party Method further include:
Terminal receives base station by Downlink Control Information DCI in preset duration as the ascending resource of its distribution, and uplink provides Source is used for terminal to base station feedback data packet reception result.
Wherein, preset duration refers to the maximum time span that base station is allowed to occupy by terminal distribution ascending resource, i.e., Preset duration is the maximum duration that base station carries out downstream feedback scheduling of resource；Preset duration can be with Downlink Control Information DCI Gap periods are unit, are also possible to as unit of other times length, such as millisecond, second etc., wherein DCI gap periods are Refer to that the time interval between two neighboring DCI, DCI gap periods can be configured according to business or system features, the present invention In not specifically limit DCI gap periods；Terminal needs to receive all DCI that base station is sent in preset duration, until being used In the ascending resource for feeding back the data packet reception result.
Conventionally, as NB M2M system mid band resource is limited, not dedicated for receiving end to transmitting terminal The feedback resources of the reception result of feedback data packet.By reserving fixed feedback resources in existing HARQ scheme, for connecing Reception result of the receiving end to transmitting terminal feedback data packet, length the time required in NB M2M system due to the transmission of each data packet Method that is inconsistent, therefore using the reserved fixed feedback resources before transmitting data packet is spent, the wasting of resources is be easy to cause.At this In inventive embodiments, base station is terminal distribution in preset duration for feeding back by base station to after terminal transmission data packet The method of the ascending resource of data packet reception result overcomes and is reserved fixed feedback resources using the prior art and caused resource The problem of waste.To after terminal transmission data packet, base station starts feedback window for base station, feedback window for providing preset duration, Terminal only needs to monitor the DCI in preset duration as defined in feedback window, can obtain for feedback data packet reception result Ascending resource thereby reduces the power consumption of terminal.
Preferably, after terminal receives ascending resource of the base station for its distribution by DCI in preset duration, if base station exists The data packet reception result of terminal feedback, this method are not received on ascending resource further include:
Terminal receives the ascending resource that base station is redistributed for it by DCI in preset duration, and ascending resource is for eventually It holds to base station feedback data packet reception result.
During downstream packet transmission, it is contemplated that base station receives the feelings of the data packet reception result failure of terminal feedback Condition, i.e. base station do not receive the data packet reception result of terminal feedback, the embodiment of the present invention in data packet maximum transmission time The ascending resource that base station is redistributed for it is received by terminal, in this way, terminal can utilize the ascending resource redistributed To base station feedback data packet reception result, and then solves the problems, such as the failure of base station received data packet reception result.Lead to base station There are two types of the reason of the case where receiving the data packet reception result failure of terminal feedback: first is that terminal receives base station as its distribution Ascending resource failure, ascending resource are used for feedback data packet reception result；Second is that terminal utilizes ascending resource to base station feedback number Fail according to packet reception result.
Preferably, the second equipment is base station, the data packet of this transmission of the received terminal in base station if the first equipment is terminal To need the last one received data packet, then when base station receives the data packet success of terminal transmission, base station was not needed to end Feedback data packet is held to receive success message.
For upstream data packet transmission process, if terminal to this data packet transmitted of base station be needs transmit last A data packet, there is still a need for terminal feedback data packet reception result for base station in the prior art.In embodiments of the present invention, work as base station When being properly received the last one data packet of terminal transmission, base station does not need to receive successful message to terminal feedback data packet, The signaling used when base station sends resource scheduling information to terminal can be reduced, in this way to achieve the purpose that save frequency spectrum resource.
In upstream data packet transmission process, if terminal is not required to the last of transmission to this data packet transmitted of base station One data packet, and the success of base station received data packet, terminal receive the same of success message in the data packet for receiving base station feedback When, base station is received as the ascending resource of its distribution, which transmits next data packet to base station for terminal.
In example IV, timer is arranged according to data packet maximum receiving time by the second equipment, when the second equipment connects When receiving the data packet of the first equipment transmission, the second equipment starts timer, i.e., is set by data packet maximum receiving time to second The time of standby received data packet is limited, and when the failure of the second equipment received data packet, the second equipment connects in data packet maximum The time receiving interior data packet for receiving the first equipment and retransmitting.The embodiment of the present invention is in the upstream or downstream data for realizing NB M2M system In the transmission process of packet, so that each packet transmission time is balanced；It overcomes and is retransmitted in the prior art by data packet maximum Number limits transmitting terminal to the number that receiving end retransmits data packet, and each packet transmission time generated is unbalanced The problem of.
Embodiment five
It is downlink data packet in Fig. 5 as shown in figure 5, a kind of downstream packet transmission method provided in an embodiment of the present invention The interactive process of base station and terminal in transmission process, the specific steps are as follows:
Base station side timer is arranged according to data packet maximum transmission time in S501, base station；
Terminal side timer is arranged according to data packet maximum receiving time in S502, terminal；
S503, base station are terminal distribution downlink resource, while starting base station side timer, and downlink resource is used for base station to end End transmission data packet；
S504, base station send downlink resource to terminal；
S505, terminal receive the downlink resource that base station is sent, while starting terminal side timer, and downlink resource is used for base station To terminal transmission data packet；
S506, base station utilize downlink resource to terminal transmission data packet；
S507, terminal receive the data packet of base station transmission using downlink resource；
S508, base station are terminal distribution physical uplink shared channel PUSCH ascending resource in preset duration, on this Row resource is used for terminal to base station feedback data packet reception result；
S509, base station send ascending resource to terminal by Downlink Control Information DCI in preset duration；
After step S506, base station starts feedback window, and feedback window is for providing preset duration；It is pre- as defined in feedback window If in duration, base station is terminal distribution ascending resource by Downlink Control Information DCI, the ascending resource is anti-to base station for terminal Data packet reception result is presented, and then solves the asking for resulting in waste of resources using the feedback resources for reserving fixation in the prior art Topic.Wherein, preset duration refers to that base station is the maximum time length that terminal distribution ascending resource allows to occupy, which exists Base station is to after terminal transmission data packet, and base station is used for by Downlink Control Information DCI for terminal distribution in this preset duration The ascending resource of feedback data packet reception result, while terminal receives all DCI of base station transmission in preset duration, to obtain Ascending resource for feedback data packet reception result；Preset duration can be with a timer come timing, and preset duration can be with It is to be also possible to as unit of other times length, such as millisecond, second etc. as unit of Downlink Control Information DCI gap periods.
S510, terminal receive base station by Downlink Control Information DCI in preset duration as the physical uplink chain of its distribution Channel PUSCH ascending resource is shared on road, which is used for terminal to base station feedback data packet reception result；
After step S507, terminal starts feedback window, and feedback window is for providing preset duration；It is pre- as defined in feedback window If in duration, terminal receives all DCI that base station is sent, to obtain the ascending resource for being used for feedback data packet reception result；Eventually Preset duration as defined in the feedback window of end side is identical as preset duration as defined in base station side feedback window, and preset duration can be determined with one When device carry out timing, preset duration can be as unit of Downlink Control Information DCI gap periods, is also possible to long with other times Degree is unit, such as millisecond, second etc..Base station is received in the preset duration as defined in feedback window by terminal as the uplink of its distribution Resource, the ascending resource, to base station feedback data packet reception result, are solved and are fixed in the prior art using reserved for terminal Feedback resources and the problem of result in waste of resources.
In the timer timing range of terminal side (i.e. in data packet maximum receiving time), if terminal received data packet at Function then executes S511 to S513；If terminal received data packet fails, S514 is executed to S519；If terminal side timer expiry (time that i.e. terminal receives the data packet of base station transmission is more than data packet maximum receiving time), then terminal is abandoned receiving base station sheet The data packet of secondary transmission.
S511, terminal using physical uplink shared channel PUSCH ascending resource to base station feedback data packet receive at Function message；
S512, terminal close terminal side timer；
The data packet that terminal receives this transmission of base station at this time is completed, and needs received next data packet if it exists, eventually End receives next data packet of base station transmission in the same way.
The data packet that S513, base station receive terminal feedback receives success message, simultaneously closes off base station side timer；
At this time base station to terminal this transmission data packet complete, the next data packet for needing to transmit if it exists, base station with Same method is to the next data packet of terminal transmission.
S514, terminal are received to base station feedback data packet using physical uplink shared channel PUSCH ascending resource and are lost Lose message；
S515, base station receive the data packet reception failure message of terminal feedback, in base station side timer timing range (i.e. In data packet maximum transmission time), base station is that terminal redistributes the downlink resource for being used for transmission data packet；
After the data packet reception failure message that base station receives terminal feedback, if by base station side timer expiry at this time (i.e. base station this to the time of terminal transmission data packet be more than data packet maximum transmission time), then base station is abandoned to terminal weight Pass data packet.
S516, base station send downlink resource to terminal；
S517, terminal receive the downlink resource for being used for transmission data packet that base station is redistributed for it；
S518, base station retransmit data packet to terminal using the downlink resource redistributed；
After step S518, base station restarts feedback window, and feedback window is provided for providing preset duration in feedback window Preset duration in, base station is terminal distribution ascending resource by Downlink Control Information DCI, and ascending resource is for terminal to base station Feedback data packet reception result；
S519, terminal receive the data packet that base station retransmits using the downlink resource redistributed；
After step S519, terminal restarts feedback window, and in the preset duration as defined in feedback window, terminal receives base Stand all DCI sent, to obtain the ascending resource for being used for feedback data packet reception result；It is preset as defined in the feedback window of terminal side Duration is identical as preset duration as defined in base station side feedback window.
In the timer timing range of terminal side (i.e. in data packet maximum receiving time), if terminal is properly received base station weight The data packet of biography then executes S511 to S513；If terminal receives the data packet failure that base station retransmits, S514 is executed to S519.
Embodiment five receives the case where data packet reception result failure of terminal feedback in view of base station, and (i.e. base station is being used for The data packet reception result of terminal feedback is not received by the ascending resource of feedback data packet reception result), at this time in step After S510, method shown in fig. 5 further include:
Ascending resource is redistributed in preset duration for terminal in S520, base station, and ascending resource is anti-to base station for terminal Present data packet reception result；
S521, base station send the ascending resource redistributed to terminal by Downlink Control Information DCI in preset duration；
S522, terminal receive base station by Downlink Control Information DCI in preset duration and attach most importance to newly assigned ascending resource, Ascending resource is used for terminal to base station feedback data packet reception result.
Subsequent terminal utilizes the ascending resource to base station feedback data packet reception result, specific method and above-mentioned steps S511 Identical to S519, details are not described herein again.
There are two types of the reason of the case where causing base station to receive the data packet reception result failure of terminal feedback: first is that terminal connects Base station is received as the ascending resource failure of its distribution, ascending resource is used for terminal to base station feedback data packet reception result；Second is that eventually End is failed using ascending resource to base station feedback data packet reception result.
By embodiment five, the transmission process of NB M2M system descending data is realized, when by data packet maximum transmitted Between base station was limited to the time of terminal transmission data packet, base station is received to terminal by data packet maximum receiving time and is passed The time of defeated data packet is limited, so that each data packet downlink times are balanced in NB M2M system；Pass through base station The ascending resource of feedback data packet reception result is used in the preset duration as defined in feedback window for terminal distribution, is overcome existing The problem of being resulted in waste of resources in technology using the feedback resources for reserving fixation.Base station is to opening after terminal transmission data packet Dynamic feedback window, terminal, which receives, starts feedback window after the data packet of base station transmission, preset duration as defined in the feedback window of terminal side with Preset duration as defined in base station side feedback window is identical, and terminal only needs to monitor the DCI in preset duration as defined in feedback window, to obtain The ascending resource for feedback data packet reception result that base station is its distribution is obtained, is overcome using the reserved fixation of the prior art Feedback resources and the problem of result in waste of resources, while being conducive to terminal and saving electric energy.It is that terminal redistributes use by base station In the ascending resource of feedback data packet reception result, solve asking for the data packet reception result failure of base station reception terminal feedback Topic.
Embodiment six
As shown in fig. 6, being transmitted the embodiment of the invention provides upstream data package transmission method in Fig. 6 for upstream data packet The interactive process of base station and terminal in the process, the specific steps are as follows:
Base station side timer is arranged according to data packet maximum receiving time in S601, base station；
Terminal side timer is arranged according to data packet maximum transmission time in S602, terminal；
S603, base station are terminal distribution ascending resource, while starting base station side timer, and ascending resource is used for terminal to base It stands and transmits data packet；
S604, base station send ascending resource to terminal；
S605, terminal receive the ascending resource that base station is sent, while starting terminal side timer, and ascending resource is used for terminal Data packet is transmitted to base station；
S606, terminal transmit data packet to base station using ascending resource；
S607, base station receive the data packet of terminal transmission；
After step S606, terminal starts feedback window, and feedback window is for providing preset duration；It is pre- as defined in feedback window If in duration, terminal receives the data packet reception result of base station feedback by Downlink Control Information DCI.After step S607, Base station starts feedback window, and feedback window is for providing preset duration；In the preset duration as defined in feedback window, base station passes through downlink control Information DCI processed is to terminal feedback data packet reception result.Preset duration as defined in base station side feedback window and terminal side feedback window are advised Fixed preset duration is identical, which can be with a timer come timing, and preset duration, which can be to control with downlink, to be believed Breath DCI gap periods are unit, are also possible to as unit of other times length, such as millisecond, second etc..
In base station side timer timing range (i.e. in data packet maximum receiving time), if base station received data packet at Function then executes S608 to S610；If base station received data packet fails, S611 is executed to S616；If base station side timer expiry (time that i.e. base station receives the data packet of terminal transmission is more than data packet maximum receiving time), then base station abandons receiving terminal sheet The data packet of secondary transmission.
S608, base station are received by Downlink Control Information DCI to terminal feedback data packet in preset duration successfully to disappear；
Base station side timer is closed in S609, base station；
Base station receives the data packet completion of this transmission of terminal at this time, if terminal is not to this data packet transmitted of base station The last one data packet for needing to transmit then can also include into the Downlink Control Information DCI that terminal is sent in the base station S608, Ascending resource for the next data packet of terminal transmission.
S610, terminal are received successfully in preset duration by the data packet that Downlink Control Information DCI receives base station feedback Message closes terminal side timer；
S611, base station pass through Downlink Control Information DCI to terminal feedback data packet reception failure message in preset duration；
S612, base station are that terminal redistributes ascending resource, and ascending resource transmits data packet to base station for terminal；
S613, base station send the ascending resource redistributed to terminal；
S614, terminal receive the ascending resource redistributed that base station is sent, and ascending resource is transmitted for terminal to base station Data packet；
Terminal (i.e. in data packet maximum transmission time), executes S615 in the timer timing range of terminal side；
S615, terminal retransmit data packet to base station using the ascending resource redistributed；
If by terminal side timer expiry at this time (i.e. terminal this to base station transmission data packet time be more than data Packet maximum transmission time), then terminal is abandoned retransmitting data packet to base station.
S616, base station receive the data packet that terminal retransmits；
After step S615, terminal restarts feedback window, and feedback window is provided for providing preset duration in feedback window Preset duration in, terminal by Downlink Control Information DCI receive base station feedback data packet reception result.Step S616 it Afterwards, base station restarts feedback window, and in the preset duration as defined in feedback window, base station is by Downlink Control Information DCI to terminal Feedback data packet reception result.Preset duration as defined in base station side feedback window and preset duration phase as defined in the feedback window of terminal side Together.
In base station side timer timing range (i.e. in data packet maximum receiving time), if base station receives what terminal retransmitted Data packet success, then execute S608 to S610；If base station receives the data packet failure that terminal retransmits, S611 is executed to S616.
If terminal is to the last one data packet that this data packet transmitted of base station is that needs transmit, and base station is in base station side Received data packet is successful (in data packet maximum receiving time) in timer timing range, step S608 to S610 shown in fig. 6 It can be replaced S617 to S618, specific as follows:
S617, base station do not need to receive success message to terminal feedback data packet, and base station side timer is closed in base station；
It is anti-that S618, terminal do not receive base station (in data packet maximum transmission time) in the timer timing range of terminal side The data packet of feedback receives success message, and terminal closes terminal side timer；
When base station is properly received the last one data packet of terminal transmission, base station does not need to connect to terminal feedback data packet Success message is received, the signaling used when base station sends resource scheduling information to terminal can be reduced, in this way to reach saving frequency spectrum The purpose of resource.Wherein, the buffer status report that the instruction of the last one data packet can be reported by terminal to base station (Buffer Status Reports, BSR) notifies base station, and whether can also carry in the header packet information of data packet is last The instruction information of one data packet.
By embodiment six, the transmission process of NB M2M system uplink data is realized, when by data packet maximum transmitted Between to terminal to base station transmission data packet time limit, by data packet maximum receiving time to base station receive terminal pass The time of defeated data packet is limited, so that each data packet uplink transmission time is balanced in NB M2M system.When base station at When function receives the last one data packet of terminal transmission, base station is not needed to the successful message of the terminal feedback reception data packet, The signaling used when base station sends resource scheduling information to terminal can be reduced, in this way to achieve the purpose that save frequency spectrum resource.
Embodiment seven
As shown in figure 8, device shown in Fig. 7 supports Fig. 3 institute the embodiment of the invention provides a kind of data packet transfer device The method shown, the device include:
Memory 81, for storing the data packet transmitted to the second equipment；
Transceiver 82, for transmitting the data packet that the memory 81 stores to the second equipment；
Processor 83, for timer to be arranged according to the maximum transmission time of data packet；When the transceiver 82 to second When equipment transmission data packet, start timer；
The transceiver 82 is also used to after the processor 83 starts timer, receives the number of the second equipment feedback According to packet reception result；
The processor 83 is also used to when the received data packet reception result of the transceiver 82 be data packet reception failure Message and when timer has not timed out, triggers the transceiver 82 to the second equipment and retransmits data packet；Or
It is also used to when the received data packet reception result of the transceiver 82 be that data packet receives success message and timer When having not timed out, Off Timer；Or
It is also used to when the received data packet reception result of the transceiver 82 be data packet reception failure message and timer When overtime, the transceiver 82 is notified to abandon to the second equipment transmission data packet.
Preferably, the processor 83 is specifically used for when the triggering transceiver 82 retransmits data packet to the second equipment:
When received data packet fails the second equipment in data packet maximum receiving time, the processor 83 is learnt described Transceiver 82 receives the data packet reception failure message of the second equipment feedback, wherein data packet maximum receiving time refers to second Equipment receives a permitted maximum time of data packet；
Timer has not timed out, and the processor 83 triggers the transceiver 82 and retransmits data packet to the second equipment.
Preferably, the second equipment is terminal or the second equipment is base station.
Preferably, the transceiver 82 is received in the data packet for receiving the second equipment feedback when the second equipment is terminal When as a result, it is specifically used for:
The transceiver 82 receives knot by the data packet that physical uplink shared channel PUSCH receives terminal feedback Fruit.
Preferably, the transceiver 82 is received in the data packet for receiving the second equipment feedback when the second equipment is base station When as a result, it is specifically used for:
The transceiver 82 receives the data packet reception result of base station feedback by Downlink Control Information DCI.
Preferably, if the second equipment is terminal,
The processor 83, is also used to after starting the timer, is terminal distribution ascending resource in preset duration, and It triggers the transceiver 82 and ascending resource is sent to terminal, ascending resource is used for terminal to 82 feedback data packet of transceiver Reception result；
The transceiver 82 is also used in preset duration that ascending resource is sent to end by Downlink Control Information DCI End, ascending resource are used for terminal to the 82 feedback data packet reception result of transceiver.
Preferably, ascending resource is sent to end by Downlink Control Information DCI in preset duration by the transceiver 82 After end, if the transceiver 82 does not receive the data packet reception result of terminal feedback and timer not on ascending resource Time-out,
The processor 83 is also used in preset duration redistribute ascending resource for terminal, and triggers the transmitting-receiving Device 82 retransmits ascending resource to terminal, and ascending resource is received to 82 feedback data packet of transceiver for terminal and tied Fruit；
The transceiver 82 is also used in preset duration retransmit ascending resource by Downlink Control Information DCI To terminal, ascending resource is used for terminal to the 82 feedback data packet reception result of transceiver.
Preferably, the processor 83 is also used to if the second equipment is base station:
If the transceiver 82 is the last one data packet for needing to transmit to this data packet transmitted of base station, work as institute It states transceiver 82 and is not received by the data packet reception result of base station feedback and when timer has not timed out, the processor 83 is really Recognize the success of base station received data packet, and Off Timer.
By memory 81, transceiver 82 and the processor 83 in embodiment seven, in the uplink for realizing NB M2M system Or in the transmission process of downlink data packet, so that each packet transmission time is balanced；It overcomes and passes through data in the prior art Each data packet transmission that packet maximum retransmission is limited to the number that receiving end retransmits data packet to transmitting terminal, and generated Time unbalanced problem.
Embodiment eight
As shown in figure 9, device shown in Fig. 9 supports Fig. 4 institute the embodiment of the invention provides a kind of data packet transfer device The method shown, the device include:
Transceiver 91, for receiving the data packet of the first equipment transmission；
Memory 92, for storing the received data packet of the transceiver 91；
Processor 93, for timer to be arranged according to data packet maximum receiving time；When the transceiver 91 receives first When the data packet of equipment transmission, start timer；
The transceiver 91 is also used to the first equipment feedback data packet reception result；
The processor 93 is also used to when the data packet reception result of the transceiver 91 feedback be data packet reception failure Message and when timer has not timed out, triggers the transceiver 91 and receives the data packet that the first equipment retransmits；Or
It is also used to when the data packet reception result of the transceiver 91 feedback be that data packet receives success message and timer When having not timed out, Off Timer；Or
It is also used to when the data packet reception result of the transceiver 91 feedback be data packet failed message and timer expiry When, notify the transceiver 91 to abandon receiving the data packet of the first equipment transmission.
Preferably, the first equipment is base station；Or first equipment be terminal.
Preferably, when the first equipment is base station, when the transceiver 91 is to the first equipment feedback data packet reception result, It is specifically used for:
The transceiver 91 passes through physical uplink shared channel PUSCH to base station feedback data packet reception result.
Preferably, when the first equipment is terminal, when the transceiver 91 is to the first equipment feedback data packet reception result, It is specifically used for:
The transceiver 91 passes through Downlink Control Information DCI to terminal feedback data packet reception result.
Preferably, the transceiver 91 is also used to if the first equipment is base station:
After the processor 93 starts timer, the transceiver 91 passes through Downlink Control Information in preset duration DCI receives base station as the ascending resource of its distribution, and ascending resource is received to base station feedback data packet for the transceiver 91 and tied Fruit.
Preferably, after the transceiver 91 receives ascending resource of the base station for its distribution by DCI in preset duration, If base station does not receive the data packet reception result that the transceiver 91 is fed back on ascending resource, the transceiver 91 is also used In:
The transceiver 91 receives the ascending resource that base station is redistributed for it, uplink money by DCI in preset duration Source is used for transceiver 91 to base station feedback data packet reception result.
Preferably, the data packet of this transmission of the received terminal of the transceiver 91 is to need if the first equipment is terminal The last one received data packet, then when the transceiver 91 receives the data packet success of terminal transmission, the transceiver 91 It does not need to receive success message to terminal feedback data packet.
By transceiver, memory and the processor in embodiment eight, in the upstream or downstream for realizing NB M2M system In the transmission process of data packet, so that each packet transmission time is balanced；It overcomes in the prior art through data packet maximum Number of retransmissions limits transmitting terminal to the number that receiving end retransmits data packet, and each packet transmission time generated is not Balanced problem.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more, The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces The form of product.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates, Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one The step of function of being specified in a box or multiple boxes.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, those skilled in the art can carry out various modification and variations without departing from this hair to the embodiment of the present invention The spirit and scope of bright embodiment.In this way, if these modifications and variations of the embodiment of the present invention belong to the claims in the present invention And its within the scope of equivalent technologies, then the present invention is also intended to include these modifications and variations.

Claims (26)

1. a kind of data packet transfer device, which is characterized in that the device includes:
Data packet transmission unit is used for the second equipment transmission data packet；
Timer management unit, for timer to be arranged according to the maximum transmission time of data packet；When the data packet transmits list When member is to the second equipment transmission data packet, start the timer；
Feedback processing unit, for receiving second equipment after the timer described in the timer management unit starting The data packet reception result of feedback, when the data packet reception result be data packet reception failure message and the timer not When overtime, the data packet transmission unit is triggered to second equipment and retransmits data packet；Or
After the timer described in the timer management unit starting, the data packet for receiving the second equipment feedback is connect It receives as a result, when the data packet reception result is that data packet receives success message and the timer and has not timed out, described in triggering Timer management unit closes the timer；Or
After the timer described in the timer management unit starting, the data packet for receiving the second equipment feedback is connect It receives as a result, notifying the number when the data packet reception result is data packet reception failure message and the timer expiry It abandons according to packet transmission unit to the second equipment transmission data packet；
Wherein, if second equipment is base station, the feedback processing unit is also used to:
If the data packet transmission unit to this data packet transmitted of the base station be the last one data packet for transmitting of needs, Then when the feedback processing unit is not received by the data packet reception result of the base station feedback and the timer has not timed out When, the feedback processing unit confirms the base station received data packet success, and triggers the timer management unit and close institute State timer.
2. device as described in claim 1, which is characterized in that the feedback processing unit triggers the data packet transmission unit When retransmitting data packet to second equipment, it is specifically used for:
When received data packet fails second equipment in data packet maximum receiving time, the feedback processing unit is received The data packet reception failure message of the second equipment feedback, wherein the data packet maximum receiving time refers to described second Equipment receives a permitted maximum time of data packet；
The timer has not timed out, and the feedback processing unit triggers the data packet transmission unit and retransmits to second equipment The data packet.
3. the device as described in any claim of claims 1 or 2, which is characterized in that
Second equipment is terminal or second equipment is base station.
4. device as described in claim 1, which is characterized in that when second equipment is terminal, the feedback processing list Member is specifically used for when receiving the data packet reception result of the second equipment feedback:
The feedback processing unit is received by the data packet that physical uplink shared channel PUSCH receives the terminal feedback As a result.
5. device as described in claim 1, which is characterized in that when second equipment is base station, the feedback processing list Member is specifically used for when receiving the data packet reception result of the second equipment feedback:
The feedback processing unit receives the data packet reception result of the base station feedback by Downlink Control Information DCI.
6. device as described in claim 1, which is characterized in that if second equipment is terminal, the device further include:
Resource allocation unit, for passing through after the timer described in the timer management unit starting in preset duration Downlink Control Information DCI is the terminal distribution ascending resource, and the ascending resource is used for the terminal to the feedback processing Unit feedback data packet reception result.
7. device as claimed in claim 6, which is characterized in that the resource allocation unit is by DCI in preset duration After the terminal distribution ascending resource, if not receive the terminal on the ascending resource anti-for the feedback processing unit The data packet reception result of the feedback and timer has not timed out, the resource allocation unit is also used to:
The resource allocation unit is that the terminal redistributes ascending resource, the uplink money by DCI in preset duration Source is used for the terminal to the feedback processing unit feedback data packet reception result.
8. a kind of data packet transfer device, which is characterized in that the device includes:
Data packet receiving unit, for receiving the data packet of the first equipment transmission；
Timer management unit, for timer to be arranged according to data packet maximum receiving time；When the data packet receiving unit When receiving the data packet of the first equipment transmission, start the timer；
Feedback processing unit, for after the timer described in the timer management unit starting, the first equipment of Xiang Suoshu to be anti- Data packet reception result is presented, when the data packet reception result is data packet reception failure message and the timer has not timed out When, it triggers the data packet receiving unit and receives the data packet that first equipment retransmits；Or
After the timer described in the timer management unit starting, Xiang Suoshu the first equipment feedback data packet receives knot Fruit triggers the timing when the data packet reception result is that data packet receives success message and the timer has not timed out Device administrative unit closes the timer；Or
After the timer described in the timer management unit starting, Xiang Suoshu the first equipment feedback data packet receives knot Fruit notifies the data packet to receive when the data packet reception result is data packet failed message and the timer expiry Unit abandons receiving the data packet of the first equipment transmission；
Wherein, if first equipment is terminal, the data of this transmission of the received terminal of data packet receiving unit Packet is needs the last one received data packet, then when the data that the data packet receiving unit receives the terminal transmission are bundled into When function, the feedback processing unit does not need to receive success message to the terminal feedback data packet.
9. device as claimed in claim 8, which is characterized in that
First equipment is base station；Or first equipment is terminal.
10. device as claimed in claim 8, which is characterized in that when first equipment is base station, the feedback processing list When member is to the first equipment feedback data packet reception result, it is specifically used for:
The feedback processing unit is received to the base station feedback data packet by physical uplink shared channel PUSCH and is tied Fruit.
11. device as claimed in claim 8, which is characterized in that when first equipment is terminal, the feedback processing list When member is to the first equipment feedback data packet reception result, it is specifically used for:
The feedback processing unit passes through Downlink Control Information DCI to the terminal feedback data packet reception result.
12. device as claimed in claim 8, which is characterized in that if first equipment is base station, the device further include:
Resource receiving unit, for passing through after the timer described in the timer management unit starting in preset duration Downlink Control Information DCI receives the base station as the ascending resource of its distribution, and the ascending resource is used for the feedback processing list Member is to the base station feedback data packet reception result.
13. device as claimed in claim 12, which is characterized in that the resource receiving unit passes through DCI in preset duration After receiving ascending resource of the base station for its distribution, if the base station does not receive the feedback on the ascending resource The data packet reception result of processing unit feedback, the resource allocation unit are also used to:
The resource receiving unit receives the ascending resource that the base station is redistributed for it, institute by DCI in preset duration It states ascending resource and is used for the feedback processing unit to the base station feedback data packet reception result.
14. a kind of data pack transmission method, which is characterized in that this method comprises:
Timer is arranged according to the maximum transmission time of data packet in first equipment；
When first equipment is to the second equipment transmission data packet, first equipment starts the timer；
First equipment receives the data packet reception result of the second equipment feedback, when the data packet reception result is number When having not timed out according to packet reception failure message and the timer, first equipment retransmits data packet to second equipment；Or Person
First equipment receives the data packet reception result of the second equipment feedback, when the data packet reception result is number According to packet reception success message and when the timer has not timed out, first equipment closes the timer；Or
First equipment receives the data packet reception result of the second equipment feedback, when the data packet reception result is number When according to packet reception failure message and the timer expiry, first equipment is abandoned to the second equipment transmission data packet；
Wherein, if first equipment be terminal, second equipment be base station, the terminal to the base station this transmit Data packet is the last one data packet for needing to transmit, then when the data packet that the terminal is not received by the base station feedback connects When receiving result and the timer and having not timed out, received data packet success in base station described in the terminal check, and close the timing Device.
15. method as claimed in claim 14, which is characterized in that first equipment receives the number of the second equipment feedback According to packet reception result, when the data packet reception result is data packet reception failure message and the timer has not timed out, institute It states the first equipment and retransmits the data packet to second equipment, comprising:
When received data packet fails second equipment in data packet maximum receiving time, described in the first equipment reception The data packet reception failure message of second equipment feedback, wherein the data packet maximum receiving time refers to second equipment Receive the permitted maximum time of data packet；
The timer has not timed out, and first equipment retransmits the data packet to second equipment.
16. the method as described in any claim of claims 14 or 15, which is characterized in that
If first equipment is base station, second equipment is terminal；Or
If first equipment is terminal, second equipment is base station.
17. method as claimed in claim 14, which is characterized in that when first equipment is base station, second equipment is When terminal, first equipment receives the data packet reception result of the second equipment feedback, comprising:
The base station receives the data packet reception result of the terminal feedback by physical uplink shared channel PUSCH.
18. method as claimed in claim 14, which is characterized in that when first equipment is terminal, second equipment is When base station, first equipment receives the data packet reception result of the second equipment feedback, comprising:
The terminal receives the data packet reception result of the base station feedback by Downlink Control Information DCI.
19. method as claimed in claim 14, which is characterized in that if first equipment is base station, second equipment is Terminal, after first equipment starts the timer, this method further include:
The base station is the terminal distribution ascending resource by Downlink Control Information DCI in preset duration, the uplink money Source is used for the terminal to the base station feedback data packet reception result.
20. method as claimed in claim 19, which is characterized in that it is described for passing through DCI in preset duration in the base station After terminal distribution ascending resource, if the data packet that the base station does not receive the terminal feedback on the ascending resource connects It receives result and the timer has not timed out, this method further include:
The base station is that the terminal redistributes ascending resource by DCI in preset duration, and the ascending resource is used for institute Terminal is stated to the base station feedback data packet reception result.
21. a kind of data pack transmission method, which is characterized in that this method comprises:
Timer is arranged according to data packet maximum receiving time in second equipment；
When second equipment receives the data packet of the first equipment transmission, second equipment starts the timer；
Second equipment is to the first equipment feedback data packet reception result, when the data packet reception result is data packet Reception failure message and when the timer has not timed out, second equipment receives the data packet that first equipment retransmits；Or Person
Second equipment is to the first equipment feedback data packet reception result, when the data packet reception result is data packet When receiving success message and the timer and having not timed out, second equipment closes the timer；Or
Second equipment is to the first equipment feedback data packet reception result, when the data packet reception result is data packet When failed message and the timer expiry, second equipment abandons receiving the data packet of the first equipment transmission；
Wherein, if first equipment is terminal, second equipment is base station, this biography of the received terminal in base station Defeated data packet is to need the last one received data packet, then when the base station receives the data packet success of the terminal transmission When, the base station does not need to receive success message to the terminal feedback data packet.
22. method as claimed in claim 21, which is characterized in that
If second equipment is terminal, first equipment is base station；Or
If second equipment is base station, first equipment is terminal.
23. method as claimed in claim 21, which is characterized in that when first equipment is base station, second equipment is When terminal, second equipment is to the first equipment feedback data packet reception result, comprising:
The terminal passes through physical uplink shared channel PUSCH to the base station feedback data packet reception result.
24. method as claimed in claim 21, which is characterized in that when first equipment is terminal, second equipment is When base station, second equipment is to the first equipment feedback data packet reception result, comprising:
The base station passes through Downlink Control Information DCI to the terminal feedback data packet reception result.
25. method as claimed in claim 21, which is characterized in that if first equipment is base station, second equipment is Terminal, after second equipment starts the timer, this method further include:
The terminal receives the base station by Downlink Control Information DCI in preset duration as the ascending resource of its distribution, institute It states ascending resource and is used for the terminal to the base station feedback data packet reception result.
26. method as claimed in claim 25, which is characterized in that receive institute by DCI in preset duration in the terminal After stating ascending resource of the base station for its distribution, if the base station does not receive the terminal feedback on the ascending resource Data packet reception result, this method further include:
The terminal receives the ascending resource that the base station is redistributed for it, the uplink money by DCI in preset duration Source is used for the terminal to the base station feedback data packet reception result.
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CN108365924B (en) 2017-01-26 2021-02-12 华为技术有限公司 Data retransmission method and communication device
CN110636549B (en) * 2018-06-21 2022-04-12 华为技术有限公司 Data transmission method, network equipment and terminal equipment
CN113132065A (en) * 2019-12-30 2021-07-16 西安诺瓦星云科技股份有限公司 Data communication method, device and system, storage medium and video processing equipment

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