CN110100494A - A kind of method and apparatus of data transmission - Google Patents

A kind of method and apparatus of data transmission Download PDF

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Publication number
CN110100494A
CN110100494A CN201680091762.4A CN201680091762A CN110100494A CN 110100494 A CN110100494 A CN 110100494A CN 201680091762 A CN201680091762 A CN 201680091762A CN 110100494 A CN110100494 A CN 110100494A
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harq process
base station
terminal
data block
harq
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CN201680091762.4A
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CN110100494B (en
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陈冬明
吴环宇
陈雍珏
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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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The problem of the invention discloses a kind of method and apparatus of data transmission, not enough use for solving HARQ process, cause UE scheduling discontinuous, and UE scheduling rates are limited, and UE dispatches duration and increases, and UE power loss increases.When base station and terminal carry out data transmission, the base station determines whether the hybrid automatic repeat-request HARQ process of preset quantity is occupied；If the HARQ process of the preset quantity is occupied, the base station selects the first HARQ process from the HARQ process of the preset quantity；The base station carries out the data transmission using the first HARQ process and the terminal.

Description

A kind of method and apparatus of data transmission Technical field
The present embodiments relate to a kind of method and apparatus of data of wireless communication technology field more particularly to machine type communication transmission.
Background technique
Inter-machine communication (Machine to Machine, M2M) is application form universal in Internet of Things (Internet Of Thing, IOT).Third generation partner program (3rd Generation Partnership Project, 3GPP) introduce machine type communication (Machine Type Communications, MTC) technology and enhanced machine type communication (Enhanced evolved Machine Type Communications, eMTC) technology.
In the prior art, the user equipment (User Equipment, UE) of eMTC is divided into two kinds of covering patterns of Mode A (ModeA) and Mode B (ModeB).
At ModeA, eMTC maximum supports 8 hybrid automatic repeat-request (Hybrid Auto Repeat Request, HARQ) processes.
Following behavior example, in the n-th subframe, evolved base station (evolved Node B, eNB machine type communication Physical Downlink Control Channel (MTC Physical Downlink Control Channel) is utilized, MPDCCH Downlink Control Information (Downlink Control Information, DCI)) is issued.ENB sends data to UE using Physical Downlink Shared Channel (Physical Downlink Shared Channel, PDSCH) in the n-th+k subframe, wherein k >=2.In the n-th+k+4 subframe, UE controls (Physical Uplink Control CHannel using physical uplink link, PUCCH the feedback acknowledgment response (Acknowledgement of the data) is sent, ACK)/negative response (negative acknowledgement, NACK).Demodulation processing is carried out from ACK/NACK to eNB is sent by PUCCH, probably needs 3 Transmission Time Intervals (Transmission Time Interval, TTI).Therefore, the maximum HARQ process number supported, cannot fill up the gap of a HARQ process.
For example: eNB issues DCI to UE by MPDCCH in n=0 subframe, in n=2 subframe ENB sends data to UE by PDSCH.UE decoding failure, in n=6 subframe, UE sends the nack message of the data by PUCCH to eNB.ENB carries out demodulation processing according to the nack message.ENB is scheduled according to downlink resource distribution condition to data are retransmitted.As shown in Figure 1, the two-way time of a HARQ process at least needs 10 TTI.EMTC HARQ uses " stop-wait " HARQ implementation of multi-process, i.e. for any one HARQ process, before waiting ACK/NACK feedback, this process temporarily stops to transmit, after receiving feedback, what it is further according to feedback is that ACK or NACK selection sends new data or re-transmission.During this period of time, eNB/UE cannot stop transmitting and waiting in vain certainly, it is necessary to other parallel HARQ processes be initiated, to make full use of time-domain resource.As shown in Figure 2, the number of processes of parallel HARQ is related with the two-way time of a HARQ process, the namely processing time correlation of transmission delay and UE/eNB, the two-way time of HARQ process is bigger, the parallel HARQ processes quantity needed support for filling up HARQ process two-way time is more, parallel HARQ processes quantity needs the two-way time TTI equal to HARQ process, but 3GPP agreement provides, under modeA, eMTC maximum supports 8 HARQ processes, and 8 HARQ process numbers can not fill up the two-way time of HARQ process, there is a problem of process number deficiency.
At ModeB, eMTC maximum supports 2 HARQ processes, and there is also the problems of above-mentioned process number deficiency.
Since HARQ process not enough uses, cause UE scheduling discontinuous, UE scheduling rates are limited.
Summary of the invention
The embodiment of the invention provides a kind of method and apparatus of data transmission, can promote UE scheduling rates.
In a first aspect, a kind of method of data transmission, this method comprises: the base station determines whether the hybrid automatic repeat-request HARQ process of preset quantity is occupied when base station and terminal carry out data transmission；If the base station determines that the HARQ process of the preset quantity is occupied, the base station selects the last longest HARQ process of time interval used of distance from the HARQ process of the preset quantity, as the first HARQ process；The base station carries out the data transmission using the first HARQ process and the terminal.
In the embodiment of the present invention, the base station selected occupied HARQ is multiplexed, i.e., while any HARQ process and any terminal carry out data transmission, can also be used to carry out data transmission with other terminals, it realizes the continuity of UE scheduling, improves UE scheduling rates.Further, it by being multiplexed HARQ process, reduces UE and dispatches duration, reduce UE power loss.
In a kind of possible design, the base station carries out the data transmission using the first HARQ process and the terminal, comprising: is based on the first HARQ process, the base station sends data block to the terminal by Physical Downlink Shared Channel；The base station receives the HARQ feedback information that the terminal is sent, and the HARQ feedback information indicates the reception state of the data block；If the HARQ feedback information is confirmation response ACK or the first HARQ process reaches preset maximum re-transmission number, the base station empties the data block.
In the embodiment of the present invention, if the HARQ feedback information is confirmation response ACK or the first HARQ process reaches preset maximum re-transmission number, the base station empties data block corresponding to the first HARQ process, using the new data block of the first HARQ process transmission, emptying the data block ensure that the first HARQ process is that can be re-used for the process of data transmission.
In a kind of possible design, it is based on the first HARQ process, the base station carries out the data transmission using the first HARQ process and the terminal, comprising: channel is shared by downlink physical and sends data block to the terminal in the base station；The base station receives the HARQ feedback information that the terminal is sent, and the HARQ feedback information indicates the reception state of the data block；If the HARQ feedback information is negative response NACK, the base station determines that idle the 2nd HARQ process, retransmits the data block using the 2nd HARQ process if it exists with the presence or absence of the 2nd idle HARQ process in the HARQ process of the predetermined quantity.Wherein, the 2nd HARQ process can select the HARQ process of any free time in the HARQ process of preset quantity.
In a kind of possible design, the method also includes: the 2nd idle HARQ process if it does not exist, the base station select the last longest 3rd HARQ process of time interval used of distance to retransmit the data block in the HARQ process of the predetermined quantity.Wherein, the 3rd HARQ process and the first HARQ process are identical or different.
In a kind of possible design, it is based on the first HARQ process, the base station utilizes described the One HARQ process and the terminal carry out the data transmission, comprising: the base station receives the data block that the terminal is sent by Physical Uplink Shared Channel；If the base station is properly received the data block that the terminal is sent or the first HARQ process reaches preset maximum re-transmission number, the base station empties the caching of the first HARQ process.
In a kind of possible design, it is based on the first HARQ process, the base station carries out the data transmission using the first HARQ process and the terminal, comprising: the base station receives the data block that the terminal is sent by Physical Uplink Shared Channel；If the base station cannot be properly received the data block that the terminal is sent, the base station determines in the HARQ process of the predetermined quantity with the presence or absence of the 2nd idle HARQ process, idle the 2nd HARQ process if it exists, the base station indicate that the terminal retransmits the data block using the 2nd HARQ process.
In a kind of possible design, the method also includes: the 2nd idle HARQ process if it does not exist, the base station selects the 3rd HARQ process in the HARQ process of the predetermined quantity, and indicates that the terminal retransmits the data block using the 3rd HARQ process.
Second aspect, a kind of base station, the base station comprise determining that module, and when base station and terminal belonging to the determining module carry out data transmission, whether the hybrid automatic repeat-request HARQ process for determining preset quantity is occupied；Selecting module, if the HARQ process of the preset quantity is occupied, for selecting the first HARQ process from the HARQ process of the preset quantity；Processing module, for carrying out the data transmission using the first HARQ process and the terminal.
In the embodiment of the present invention, the base station selected occupied HARQ is multiplexed, i.e. while any HARQ process and any terminal carry out data transmission, it can also be used to carry out data transmission with other terminals, realize the continuity of UE scheduling, UE scheduling rates are improved, UE is reduced and dispatches duration, reduce UE power loss.
In a kind of possible design, the processing module is specifically used for: being based on the first HARQ process, sends data block to the terminal by Physical Downlink Shared Channel；The HARQ feedback information that the terminal is sent is received, the HARQ feedback information indicates the reception state of the data block；If the HARQ feedback information is confirmation response ACK or the first HARQ process reaches preset maximum re-transmission number, the data block is emptied.
In a kind of possible design, the processing module is specifically used for: being based on the first HARQ process, shares channel by downlink physical and send data block to the terminal；The HARQ feedback information that the terminal is sent is received, the HARQ feedback information indicates the reception state of the data block；If the HARQ feedback information is negative response NACK, determine that idle the 2nd HARQ process, retransmits the data block using the 2nd HARQ process if it exists with the presence or absence of the 2nd idle HARQ process in the HARQ process of the predetermined quantity.
In a kind of possible design, the processing module is also used to: the 2nd idle HARQ process if it does not exist selects the 3rd HARQ process to retransmit the data block in the HARQ process of the predetermined quantity.
In a kind of possible design, the processing module is specifically used for: being based on the first HARQ process, receives the data block that the terminal is sent by Physical Uplink Shared Channel；If the base station is properly received the data block that the terminal is sent or the first HARQ process reaches preset maximum re-transmission number, the caching of the first HARQ process is emptied.
In a kind of possible design, the processing module is specifically used for: being based on the first HARQ process, receives the data block that the terminal is sent by Physical Uplink Shared Channel；If the base station cannot be properly received the data block that the terminal is sent, it determines in the HARQ process of the predetermined quantity with the presence or absence of the 2nd idle HARQ process, idle the 2nd HARQ process if it exists indicates that the terminal retransmits the data block using the 2nd HARQ process.
In a kind of possible design, the processing module is also used to: the 2nd idle HARQ process if it does not exist selects the 3rd HARQ process in the HARQ process of the predetermined quantity, and indicates that the terminal retransmits the data block using the 3rd HARQ process.
In a kind of possible design, the determining module is specifically used for: the last longest HARQ process of time interval used of distance is selected from the HARQ process of the preset quantity, as the first HARQ process.
In a kind of possible design, the determining module is specifically also used to: the 2nd idle HARQ process if it does not exist, the last longest HARQ process of time interval used of distance is selected from the HARQ process of the preset quantity, as the 3rd HARQ process, wherein, the 3rd HARQ process and the first HARQ process are identical or different.
The third aspect, base station include transceiver and at least one processor for connecting with the transceiver, in which:
Processor executes following process for reading the program in memory:
When base station and terminal carry out data transmission, the base station determines whether the hybrid automatic repeat-request HARQ process of preset quantity is occupied；If the HARQ process of the preset quantity is occupied, the base station selects the first HARQ process from the HARQ process of the preset quantity；The base station carries out the data transmission using the first HARQ process and the terminal.
In a kind of possible design, the processor is specifically used for: being based on the first HARQ process, sends data block to the terminal by Physical Downlink Shared Channel；The HARQ feedback information that the terminal is sent is received, the HARQ feedback information indicates the reception state of the data block；If the HARQ feedback information is confirmation response ACK or the first HARQ process reaches preset maximum re-transmission number, the data block is emptied.
In a kind of possible design, the processing implement body is also used to: being based on the first HARQ process, is shared channel by downlink physical and send data block to the terminal；The HARQ feedback information that the terminal is sent is received, the HARQ feedback information indicates the reception state of the data block；If the HARQ feedback information is negative response NACK, determine that idle the 2nd HARQ process, retransmits the data block using the 2nd HARQ process if it exists with the presence or absence of the 2nd idle HARQ process in the HARQ process of the predetermined quantity.
In a kind of possible design, the processor is also used to: the 2nd idle HARQ process if it does not exist selects the 3rd HARQ process to retransmit the data block in the HARQ process of the predetermined quantity.
In a kind of possible design, the processor is specifically used for: being based on the first HARQ process, receives the data block that the terminal is sent by Physical Uplink Shared Channel；If the base station is properly received the data block that the terminal is sent or the first HARQ process reaches preset maximum re-transmission number, the caching of the first HARQ process is emptied.
In a kind of possible design, the processor is specifically used for: being based on the first HARQ process, receives the data block that the terminal is sent by Physical Uplink Shared Channel；If the base station cannot be properly received the data block that the terminal is sent, determining whether there is in the HARQ process of the predetermined quantity The 2nd idle HARQ process, idle the 2nd HARQ process, indicates that the terminal retransmits the data block using the 2nd HARQ process if it exists.
In a kind of possible design, the processing implement body is also used to: the 2nd idle HARQ process if it does not exist selects the 3rd HARQ process in the HARQ process of the predetermined quantity, and indicates that the terminal retransmits the data block using the 3rd HARQ process.
In a kind of possible design, the processor is specifically used for: the last longest HARQ process of time interval used of distance is selected from the HARQ process of the preset quantity, as the first HARQ process.
In a kind of possible design, the processor is specifically used for: the 2nd idle HARQ process if it does not exist, the last longest HARQ process of time interval used of distance is selected from the HARQ process of the preset quantity, as the 3rd HARQ process, wherein, the 3rd HARQ process and the first HARQ process are identical or different.
In the embodiment of the present invention, a kind of method and apparatus of data transmission is proposed, when base station carries out data transmission with terminal, the base station determines whether the hybrid automatic repeat-request HARQ process of preset quantity is occupied；If the HARQ process of the preset quantity is occupied, the base station selects the first HARQ process from the HARQ process of the preset quantity；The base station carries out the data transmission using the first HARQ process and the terminal.The continuity of UE scheduling is realized by multiplexing HARQ process in base station, improves UE scheduling rates.Further, it by being multiplexed HARQ process, reduces UE and dispatches duration, reduce UE power loss.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of HARQ process data transmission process provided in an embodiment of the present invention；
Fig. 2 is a kind of schematic diagram of multiple HARQ process data transmission processes provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of the multiple HARQ process data transmission processes of another kind provided in an embodiment of the present invention；
Fig. 4 is a kind of method flow diagram of data transmission provided in an embodiment of the present invention；
Fig. 5 is the schematic diagram of another data transmission procedure provided in an embodiment of the present invention；
Fig. 6 is a kind of schematic diagram of the equipment of data transmission provided in an embodiment of the present invention；
Fig. 7 is a kind of hardware structural diagram of the equipment of data transmission provided in an embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described in further detail with reference to the accompanying drawings of the specification.It should be appreciated that embodiment described herein is only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
The embodiment of the invention provides a kind of methods of data transmission, as shown in figure 4, this method includes following procedure:
S11, when base station and terminal carry out data transmission, the base station determines whether the hybrid automatic repeat-request HARQ process of preset quantity occupied.
Wherein, the terminal can be referred to as user equipment, mobile station or mobile terminal etc., the terminal can be through wireless access network (Radio Access Network, RAN it) is communicated with one or more equipment of the core network, such as, terminal can be mobile phone (or being " honeycomb " phone) or computer with mobile terminal etc., such as, terminal can also be portable, pocket, hand-held, built-in computer or vehicle-mounted mobile device, they exchange voice and/or data with wireless access network.
If the HARQ process of S12, the preset quantity is occupied, the base station selects the first HARQ process from the HARQ process of the preset quantity.
Optionally, the base station selects the last longest HARQ process of time interval used of distance from the HARQ process of the preset quantity, as the first HARQ process.
For example: base station is carried out data transmission using the HARQ process of preset quantity with terminal A, the HARQ process of the preset quantity is all occupied, when terminal B needs to carry out data transmission with base station, base station selects a first HARQ process to be multiplexed in the HARQ process of the preset quantity.As shown in figure 5, if being transmitted there are two new data block, HARQ-0 and HARQ-1 is selected to be multiplexed respectively when 8 HARQ carry out occupied.
S13, the base station carry out the data transmission using the first HARQ process and the terminal.
In the embodiment of the present invention, when base station carries out data transmission with terminal, the base station determines whether the HARQ process of preset quantity is occupied；If the HARQ process of the preset quantity is occupied, The base station selects the first HARQ process from the HARQ process of the preset quantity；The base station carries out the data transmission using the first HARQ process and the terminal.The continuity of UE scheduling is realized by multiplexing HARQ process in base station, improves UE scheduling rates.Further, it by being multiplexed HARQ process, reduces UE and dispatches duration, reduce UE power loss.
In S13, the data transmission includes downlink data transmission and transmitting uplink data.
For downlink data transmission, the base station carries out the data transmission using the first HARQ process and the terminal, specifically: it is based on the first HARQ process, the base station sends data block to the terminal by Physical Downlink Shared Channel；The base station receives the HARQ feedback information that the terminal is sent, and the HARQ feedback information indicates the reception state of the data block；If the HARQ feedback information is confirmation response ACK or the first HARQ process reaches preset maximum re-transmission number, the base station empties the data block.
Optionally, it is based on the first HARQ process, the base station shares channel by downlink physical and sends data block to the terminal；The base station receives the HARQ feedback information that the terminal is sent, and the HARQ feedback information indicates the reception state of the data block；If the HARQ feedback information is negative response NACK, the base station determines that idle the 2nd HARQ process, retransmits the data block using the 2nd HARQ process if it exists with the presence or absence of the 2nd idle HARQ process in the HARQ process of the predetermined quantity.
Specifically, before the base station sends data block to the terminal by PDSCH, the base station issues DCI to the terminal by MPDCCH, new data is carried in the DCI indicates (New Data indicator, NDI) value, when carrying out data block retransmissions using the 2nd HARQ process, it is different that the NDI value carried in the DCI is sent to the NDI value carried in the DCI of the UE from the base station last time.
Optionally, it is based on the first HARQ process, the base station shares channel by downlink physical and sends data block to the terminal；The base station receives the HARQ feedback information that the terminal is sent, and the HARQ feedback information indicates the reception state of the data block；If the HARQ feedback information is negative response NACK, if it does not exist the 2nd idle HARQ process, the base station selects the 3rd HARQ process to retransmit the data block in the HARQ process of the predetermined quantity.
Specifically, base station selects the last longest HARQ process of time interval used of distance from the HARQ process of the preset quantity, as the 3rd HARQ process, wherein the 3rd HARQ process and the first HARQ process are identical or different.Before the base station sends data block to the terminal by PDSCH, the base station issues DCI to the terminal by MPDCCH, NDI value is carried in the DCI, when the 3rd HARQ process is identical as the first HARQ process, it is identical that the NDI value carried in the DCI is sent to the NDI value carried in the DCI of the UE with the base station last time；When the 3rd HARQ process and the first HARQ process difference, it is different that the NDI value carried in the DCI is sent to the NDI value carried in the DCI of the UE from the base station last time.
For transmitting uplink data, the base station carried out data transmission using the first HARQ process with the terminal include:
Based on the first HARQ process, the base station receives the data block that the terminal is sent by Physical Uplink Shared Channel；If the base station is properly received the data block that the terminal is sent or the first HARQ process reaches preset maximum re-transmission number, the base station empties the caching of the first HARQ process, optionally, wherein the caching includes media access control protocol data unit (Medium Access Control Packet Data Unit, MAC PDU).
Optionally, it is based on the first HARQ process, the base station receives the data block that the terminal is sent by Physical Uplink Shared Channel；If the base station cannot be properly received the data block that the terminal is sent, the base station determines in the HARQ process of the predetermined quantity with the presence or absence of the 2nd idle HARQ process, idle the 2nd HARQ process if it exists, the base station indicates that the terminal retransmits the data block using the 2nd HARQ process, wherein, described cannot be properly received including data check error or reception result is discontinuous transmission (Discontinuous Transmission, DTX).
Specifically, before the base station receives the data block that the terminal is sent by PUSCH, the base station issues ascending control information (Uplink Control Information to the terminal by MPDCCH, UCI) when carrying out data block retransmissions using the 2nd HARQ process, it is different that the NDI value carried in the UCI is sent to the NDI value carried in the UCI of the UE from the base station last time.
Optionally, the 2nd HARQ process of free time, the base station select the 3rd HARQ process in the HARQ process of the predetermined quantity if it does not exist, and indicate that the terminal retransmits the data block using the 3rd HARQ process.Specifically, the 2nd idle HARQ process if it does not exist, the base station selects the last longest HARQ process of time interval used of distance from the HARQ process of the preset quantity, as the 3rd HARQ process, wherein, the 3rd HARQ process and the first HARQ process are identical or different.Before the base station receives the data block that the terminal is sent by PUSCH, the base station issues UCI to the terminal by MPDCCH, NDI value is carried in the UCI, when the 3rd HARQ process is identical as the first HARQ process, it is identical that the NDI value carried in the UCI is sent to the NDI value carried in the UCI of the UE with the base station last time；When the 3rd HARQ process and the first HARQ process difference, it is different that the NDI value carried in the UCI is sent to the NDI value carried in the UCI of the UE from the base station last time.
Based on the same inventive concept, the embodiment of the invention provides a kind of base stations, as shown in fig. 6, the base station includes:
Determining module 61, when base station and terminal belonging to the determining module carry out data transmission, whether the hybrid automatic repeat-request HARQ process for determining preset quantity is occupied；
Selecting module 62, if the HARQ process of the preset quantity is occupied, for selecting the first HARQ process from the HARQ process of the preset quantity；
Processing module 63, for carrying out the data transmission using the first HARQ process and the terminal.
In the embodiment of the present invention, a kind of base station is proposed, when base station carries out data transmission with terminal, the base station determines whether the hybrid automatic repeat-request HARQ process of preset quantity is occupied；If the HARQ process of the preset quantity is occupied, the base station selects the first HARQ process from the HARQ process of the preset quantity；The base station carries out the data transmission using the first HARQ process and the terminal.The continuity of UE scheduling is realized by multiplexing HARQ process in base station, improves UE scheduling rates.Further, it by being multiplexed HARQ process, reduces UE and dispatches duration, reduce UE power loss.
Optionally, the processing module is specifically used for:
Based on the first HARQ process, data block is sent to the terminal by Physical Downlink Shared Channel；
The HARQ feedback information that the terminal is sent is received, the HARQ feedback information indicates the reception state of the data block；
If the HARQ feedback information is confirmation response ACK or the first HARQ process reaches preset maximum re-transmission number, the data block is emptied.
Optionally, the processing module is specifically used for:
Based on the first HARQ process, channel is shared by downlink physical and sends data block to the terminal；
The HARQ feedback information that the terminal is sent is received, the HARQ feedback information indicates the reception state of the data block；
If the HARQ feedback information is negative response NACK, determine that idle the 2nd HARQ process, retransmits the data block using the 2nd HARQ process if it exists with the presence or absence of the 2nd idle HARQ process in the HARQ process of the predetermined quantity.
Optionally, the processing module is also used to:
The 2nd idle HARQ process if it does not exist selects the 3rd HARQ process to retransmit the data block in the HARQ process of the predetermined quantity.
Optionally, the processing module is specifically used for:
Based on the first HARQ process, the data block that the terminal is sent is received by Physical Uplink Shared Channel；
If the base station is properly received the data block that the terminal is sent or the first HARQ process reaches preset maximum re-transmission number, the caching of the first HARQ process is emptied.
Optionally, the processing module is specifically used for:
Based on the first HARQ process, the data block that the terminal is sent is received by Physical Uplink Shared Channel；
If the base station cannot be properly received the data block that the terminal is sent, the predetermined number is determined With the presence or absence of the 2nd idle HARQ process in the HARQ process of amount, idle the 2nd HARQ process, indicates that the terminal retransmits the data block using the 2nd HARQ process if it exists.
Optionally, the processing module is also used to:
The 2nd idle HARQ process if it does not exist selects the 3rd HARQ process in the HARQ process of the predetermined quantity, and indicates that the terminal retransmits the data block using the 3rd HARQ process.
Optionally, the determining module is specifically used for:
The last longest HARQ process of time interval used of distance is selected from the HARQ process of the preset quantity, as the first HARQ process.
Optionally, the determining module is specifically also used to:
The 2nd idle HARQ process if it does not exist, the last longest HARQ process of time interval used of distance is selected from the HARQ process of the preset quantity, as the 3rd HARQ process, wherein the 3rd HARQ process and the first HARQ process are identical or different.
In the example of figure 7, base station includes transceiver 710 and at least one processor 700 for connecting with the transceiver 710, in which:
Processor 700 executes following process for reading the program in memory 720:
When base station and terminal carry out data transmission, the base station determines whether the hybrid automatic repeat-request HARQ process of preset quantity is occupied；If the HARQ process of the preset quantity is occupied, the base station selects the first HARQ process from the HARQ process of the preset quantity；The base station carries out the data transmission using the first HARQ process and the terminal.
Wherein, in Fig. 7, bus architecture may include the bus and bridge of any number of interconnection, and the various circuits for the memory that the one or more processors specifically represented by processor 700 and memory 720 represent link together.Bus architecture can also link together various other circuits of such as peripheral equipment, voltage-stablizer and management circuit or the like, and these are all it is known in the art, and therefore, it will not be further described herein.Bus interface provides interface.Transceiver 710 can be multiple element, that is, includes transmitter and receiver, provide the unit for communicating over a transmission medium with various other devices.Processor 700 is responsible for management bus architecture and common processing, and memory 720 can store the used data when executing operation of processor 700.
Optionally, processor 700 specifically executes following process: being based on the first HARQ process, sends data block to the terminal by Physical Downlink Shared Channel；The HARQ feedback information that the terminal is sent is received, the HARQ feedback information indicates the reception state of the data block；If the HARQ feedback information is confirmation response ACK or the first HARQ process reaches preset maximum re-transmission number, the data block is emptied.
Optionally, the processor 700 is specifically also used to: being based on the first HARQ process, is shared channel by downlink physical and send data block to the terminal；The HARQ feedback information that the terminal is sent is received, the HARQ feedback information indicates the reception state of the data block；If the HARQ feedback information is negative response NACK, determine that idle the 2nd HARQ process, retransmits the data block using the 2nd HARQ process if it exists with the presence or absence of the 2nd idle HARQ process in the HARQ process of the predetermined quantity.
Optionally, the processor 700 is also used to: the 2nd idle HARQ process if it does not exist selects the 3rd HARQ process to retransmit the data block in the HARQ process of the predetermined quantity.
Optionally, the processor is specifically used for: being based on the first HARQ process, receives the data block that the terminal is sent by Physical Uplink Shared Channel；If the base station is properly received the data block that the terminal is sent or the first HARQ process reaches preset maximum re-transmission number, the caching of the first HARQ process is emptied.
Optionally, the processor 700 is specifically used for: being based on the first HARQ process, receives the data block that the terminal is sent by Physical Uplink Shared Channel；If the base station cannot be properly received the data block that the terminal is sent, it determines in the HARQ process of the predetermined quantity with the presence or absence of the 2nd idle HARQ process, idle the 2nd HARQ process if it exists indicates that the terminal retransmits the data block using the 2nd HARQ process.
Optionally, the processor 700 is specifically also used to: the 2nd idle HARQ process if it does not exist selects the 3rd HARQ process in the HARQ process of the predetermined quantity, and indicates that the terminal retransmits the data block using the 3rd HARQ process.
Optionally, the processor 700 is specifically used for: the last longest HARQ process of time interval used of distance is selected from the HARQ process of the preset quantity, as the first HARQ into Journey.
Optionally, the processor 700 is specifically used for: the 2nd idle HARQ process if it does not exist, the last longest HARQ process of time interval used of distance is selected from the HARQ process of the preset quantity, as the 3rd HARQ process, wherein, the 3rd HARQ process and the first HARQ process are identical or different.
It is appreciated that processor 700 controls the information exchange of eating dishes without rice or wine that transceiver 710 carries out base station and terminal.
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, the form of complete hardware embodiment, complete software embodiment or embodiment combining software and hardware aspects can be used in the present invention.Moreover, the form for the computer program product implemented in the computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) that one or more wherein includes computer usable program code can be used in the present invention.
The present invention be referring to according to the method for the embodiment of the present invention, the flowchart and/or the block diagram of equipment (system) and computer program product describes.It should be understood that the combination of process and/or box in each flow and/or block and flowchart and/or the block diagram that can be realized by computer program instructions in flowchart and/or the block diagram.These computer program instructions be can provide to the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to generate a machine, so that generating by the instruction that computer or the processor of other programmable data processing devices execute for realizing the device for the function of specifying in 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, to be able to guide in computer or other programmable data processing devices computer-readable memory operate in a specific manner, so that instruction stored in the computer readable memory generates the manufacture including command device, which realizes the function of specifying in one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that series of operation steps are executed on a computer or other programmable device to generate computer implemented processing, so that instruction executed on a computer or other programmable device is provided for realizing the step for the function of specifying in one or more flows of the flowchart and/or one or more blocks of the block diagram Suddenly.
Although preferred embodiments of the present invention have been described, once a person skilled in the art knows basic creative concepts, then additional changes and modifications may be made to these embodiments.So it includes preferred embodiment and all change and modification for falling into the scope of the invention that the following claims are intended to be interpreted as.
Obviously, those skilled in the art various changes and modifications can be made to the invention without departing from the spirit and scope of the present invention.If then the present invention is also intended to include these modifications and variations in this way, these modifications and changes of the present invention is within the scope of the claims of the present invention and its equivalent technology.

Claims (18)

  1. A kind of method of data transmission, which is characterized in that this method comprises:
    When base station and terminal carry out data transmission, the base station determines whether the hybrid automatic repeat-request HARQ process of preset quantity is occupied；
    If the HARQ process of the preset quantity is occupied, the base station selects the first HARQ process from the HARQ process of the preset quantity；
    The base station carries out the data transmission using the first HARQ process and the terminal.
  2. The method as described in claim 1, which is characterized in that the base station carries out the data transmission using the first HARQ process and the terminal, comprising:
    Based on the first HARQ process, the base station sends data block to the terminal by Physical Downlink Shared Channel；
    The base station receives the HARQ feedback information that the terminal is sent, and the HARQ feedback information indicates the reception state of the data block；
    If the HARQ feedback information is confirmation response ACK or the first HARQ process reaches preset maximum re-transmission number, the base station empties the data block.
  3. The method as described in claim 1, which is characterized in that the base station carries out the data transmission using the first HARQ process and the terminal, comprising:
    Based on the first HARQ process, the base station shares channel by downlink physical and sends data block to the terminal；
    The base station receives the HARQ feedback information that the terminal is sent, and the HARQ feedback information indicates the reception state of the data block；
    If the HARQ feedback information is negative response NACK, the base station determines that idle the 2nd HARQ process, retransmits the data block using the 2nd HARQ process if it exists with the presence or absence of the 2nd idle HARQ process in the HARQ process of the predetermined quantity.
  4. Method as claimed in claim 3, which is characterized in that the method also includes:
    The 2nd idle HARQ process if it does not exist, the base station the predetermined quantity HARQ into The 3rd HARQ process is selected to retransmit the data block in journey.
  5. The method as described in claim 1, which is characterized in that the base station carries out the data transmission using the first HARQ process and the terminal, comprising:
    Based on the first HARQ process, the base station receives the data block that the terminal is sent by Physical Uplink Shared Channel；
    If the base station is properly received the data block that the terminal is sent or the first HARQ process reaches preset maximum re-transmission number, the base station empties the caching of the first HARQ process.
  6. The method as described in claim 1, which is characterized in that the base station carries out the data transmission using the first HARQ process and the terminal, comprising:
    Based on the first HARQ process, the base station receives the data block that the terminal is sent by Physical Uplink Shared Channel；
    If the base station cannot be properly received the data block that the terminal is sent, the base station determines in the HARQ process of the predetermined quantity with the presence or absence of the 2nd idle HARQ process, idle the 2nd HARQ process if it exists, the base station indicate that the terminal retransmits the data block using the 2nd HARQ process.
  7. Method as claimed in claim 6, which is characterized in that the method also includes:
    The 2nd idle HARQ process, the base station select the 3rd HARQ process in the HARQ process of the predetermined quantity if it does not exist, and indicate that the terminal retransmits the data block using the 3rd HARQ process.
  8. Method as claimed in any one of claims 1 to 7, which is characterized in that the base station selects the first HARQ process from the HARQ process of the preset quantity, comprising:
    The base station selects the last longest HARQ process of time interval used of distance from the HARQ process of the preset quantity, as the first HARQ process.
  9. Method as described in claim 4 or 7, which is characterized in that the 2nd idle HARQ process, the base station select the 3rd HARQ process in the HARQ process of the predetermined quantity if it does not exist, comprising:
    The 2nd idle HARQ process if it does not exist, the base station from the HARQ of the preset quantity into The last longest HARQ process of time interval used of distance is selected in journey, as the 3rd HARQ process, wherein the 3rd HARQ process and the first HARQ process are identical or different.
  10. A kind of base station, which is characterized in that the base station includes:
    Determining module, when base station and terminal belonging to the determining module carry out data transmission, whether the hybrid automatic repeat-request HARQ process for determining preset quantity is occupied；
    Selecting module, if the HARQ process of the preset quantity is occupied, for selecting the first HARQ process from the HARQ process of the preset quantity；
    Processing module, for carrying out the data transmission using the first HARQ process and the terminal.
  11. Base station as claimed in claim 10, which is characterized in that the processing module is specifically used for:
    Based on the first HARQ process, data block is sent to the terminal by Physical Downlink Shared Channel；
    The HARQ feedback information that the terminal is sent is received, the HARQ feedback information indicates the reception state of the data block；
    If the HARQ feedback information is confirmation response ACK or the first HARQ process reaches preset maximum re-transmission number, the data block is emptied.
  12. Base station as claimed in claim 10, which is characterized in that the processing module is specifically used for:
    Based on the first HARQ process, channel is shared by downlink physical and sends data block to the terminal；
    The HARQ feedback information that the terminal is sent is received, the HARQ feedback information indicates the reception state of the data block；
    If the HARQ feedback information is negative response NACK, determine that idle the 2nd HARQ process, retransmits the data block using the 2nd HARQ process if it exists with the presence or absence of the 2nd idle HARQ process in the HARQ process of the predetermined quantity.
  13. Base station as claimed in claim 12, which is characterized in that the processing module is also used to:
    The 2nd idle HARQ process if it does not exist selects the 3rd HARQ process to retransmit the data block in the HARQ process of the predetermined quantity.
  14. Base station as claimed in claim 10, which is characterized in that the processing module is specifically used for:
    Based on the first HARQ process, the data block that the terminal is sent is received by Physical Uplink Shared Channel；
    If the base station is properly received the data block that the terminal is sent or the first HARQ process reaches preset maximum re-transmission number, the caching of the first HARQ process is emptied.
  15. Base station as claimed in claim 10, which is characterized in that the processing module is specifically used for:
    Based on the first HARQ process, the data block that the terminal is sent is received by Physical Uplink Shared Channel；
    If the base station cannot be properly received the data block that the terminal is sent, it determines in the HARQ process of the predetermined quantity with the presence or absence of the 2nd idle HARQ process, idle the 2nd HARQ process if it exists indicates that the terminal retransmits the data block using the 2nd HARQ process.
  16. Base station as claimed in claim 15, which is characterized in that the processing module is also used to:
    The 2nd idle HARQ process if it does not exist selects the 3rd HARQ process in the HARQ process of the predetermined quantity, and indicates that the terminal retransmits the data block using the 3rd HARQ process.
  17. Base station as described in claim 10 to 16 any one, which is characterized in that the determining module is specifically used for:
    The last longest HARQ process of time interval used of distance is selected from the HARQ process of the preset quantity, as the first HARQ process.
  18. Base station as described in claim 13 or 16, which is characterized in that the determining module is specifically also used to:
    The 2nd idle HARQ process if it does not exist, the last longest HARQ process of time interval used of distance is selected from the HARQ process of the preset quantity, as the 3rd HARQ process, wherein the 3rd HARQ process and the first HARQ process are identical or different.
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