CN101388756B - Data package transmission method and apparatus - Google Patents
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Abstract
The invention discloses a transmission method of a data packet, which comprises the following steps: determining whether being adapt to adopt a feedback HAPQ mechanism according to the characteristics of data of a buffer area by a network side, when the characteristics of the data of the buffer area are not adapt to adopt the feedback HAPQ mechanism, transmitting the data through a retransmission mode and transmitting information which comprises indicated information for indicating that a non-feedback HAPQ mechanism is adopted. Simultaneously, the invention further discloses a transmission device of the data packet. The method can select the appropriate HARQ mechanism (the feedback HAPQ mechanism or the non-feedback HAPQ mechanism) according to the characteristics of the data, especially under a condition that an up-bound synchronization does not need to be continuously maintained, the non-feedback HAPQ mode is adopted to adapt to various conditions, thereby the generation of the condition that the costs of occupying control communication channels for keeping the up-bound synchronization is larger than that of the multiple-repeated mode of the non-feedback HAPQ mechanism is avoided.
Description
Technical field
The present invention relates to wireless communication technology field, more particularly, relate to a kind of transmission method and device of packet.
Background technology
Along with (the High Speed Downlink Package Access of HSDPA among the 3GPP Release5, the high-speed downlink packet access) introducing of technology, HS-PDSCH channel (High Speed PhysicalDownlink Shared Channel, high-speed physical downlink shared channel (HS-PDSCH)) and HS-SCCH channel (HighSpeed Shared Control Channel for HS-DSCH, the High-Speed Shared Control Channel of HS-DSCH), and HS-SICH (High Speed Shared Information Channel, high-speed shared information channel) also correspondingly introduces.
Described HS-SCCH, HS-PDSCH and HS-SICH interchannel are set up binding relationship by strict timing, this just means if the prerequisite by HS-SICH carrying HARQ (Hybrid AutomaticRepeat Request, mixed automatic repeat request) is that base station and user terminal are in the uplink synchronous state.When not having continuous uplink synchronous mechanism between user terminal and base station, introduce HSUPA (High Uplink Package Access such as Release7, the High Speed Uplink Packet access) after the technology, the communication of uplink and downlink is respectively by HSUPA, HSDPA transmission, and need not to follow DPCH (Dedicated Physical Channel, DPCH) exists, therefore, if just need to set up uplink synchronous by extra method by before certain user terminal of HS-SCCH channel dispatch this moment.Existing a kind of feasible method is by the synchronous specific indication information of HS-SCCH channel bearing, after user terminal receives this synchronous specific indication information, initiates the uplink synchronous process, in order to can pass through HS-SICH channel feedback HARQ.
Can find out, because user terminal needs to keep continuously uplink synchronous, so that during the receive data bag, by HS-SICH channel feedback HARQ, data break in transmission is larger, and in the less situation of packet, for the expense that keeps the shared control channel of uplink synchronous is larger, even also large situation of the expense that spends than the mode that repeatedly retransmits that adopts without feedback HARQ mechanism appears.
Summary of the invention
In view of this, the invention provides a kind of transmission method and device of packet, larger at the data break of transmission to solve prior art, and in the less situation of packet, because what adopt is feedback HARQ mechanism, need to keep to cause synchronously the irrational problem of expense that spends.
The present invention is achieved in that
A kind of transmission method of packet comprises:
Network side determines whether to be fit to adopt feedback HARQ mechanism according to the characteristics of buffer data;
When the characteristics of the data of described buffering area are not suitable for adopting feedback HARQ mechanism, the mode that described the data repeats to transmit are transmitted, and sent and comprise the information that adopts without the indication information of feedback HARQ mechanism that is used to indicate.
Preferably, described information also comprises the information that is used to indicate number of repetition.
Preferably, described indication information is default bit information.
Preferably, described indication information is number of repetition information.
Preferably, described method also comprises:
When the characteristics of the data of described buffering area are fit to adopt feedback HARQ, determine whether to exist uplink synchronous;
If there is no uplink synchronous by predefined synchronization mechanism triggering terminal, is set up the synchronized relation of network side and end side; Otherwise, send described buffer data, and before sending, send Downlink Control Information by the HS-SCCH channel.
Preferably, network side determines whether to be fit to adopt before the feedback HARQ mechanism according to the characteristics of the data of buffering area, also comprises:
Judge whether to exist uplink synchronous, when terminal is in the state of uplink synchronous, adopt feedback HARQ mechanism, send the data of described buffering area, before sending, send Downlink Control Information by the HS-SCCH channel, and process ends.
Preferably, determine whether to exist uplink synchronous according to following steps:
Arrange one and detect timer;
Network side is every to send a synch command to end side, triggers the zero clearing of described detection timer, and restarts;
When the time of described detection timer record surpassed a default thresholding, network side was to end side transmission synch command with ing, can determine that uplink synchronous loses, otherwise, determine that network side and terminal are in the uplink synchronous state.
Preferably, determine whether to be fit to adopt feedback HARQ mechanism according to following steps:
Set in advance a data volume threshold value;
Determine whether to adopt feedback HARQ mechanism according to the data volume of described buffer data and the comparative result of described data volume threshold value.
Preferably, determine whether to be fit to adopt feedback HARQ mechanism according to following steps:
Set in advance a resource quantity threshold value;
Data volume and current channel quality information according to buffer data are determined the needed resource of these data of transmission, and compare with the resource quantity threshold value of presetting, and determine whether to adopt feedback HARQ mechanism according to comparative result.
Preferably, the described indication information and/or the number of repetition information that are used to indicate employing nothing feedback HARQ mechanism of comprising is carried on the HS-SCCH channel.
Preferably, with the invalid form information in the resource indication information in the HS-SCCH channel as being used to indicate indication information and/or the number of repetition information that adopts without feedback HARQ mechanism.
Preferably, the default bit carrying in the HARQ information in the HS-SCCH channel is used to indicate indication information and/or the number of repetition information that adopts without feedback HARQ mechanism.
Preferably, the HS-SCCH channel is expanded, increased some bits, be used for indication information and/or number of repetition information that nothing feedback HARQ mechanism is adopted in the carrying indication.
Preferably, set up without the binding relationship of feedback HARQ mechanism with the HS-SCCH channel, receive described this event of HS-SCCH channel information as the indication of adopting without feedback HARQ mechanism with user terminal.
Preferably, according to following steps the mode that described the data repeats to transmit is transmitted:
Set number of repetition, first transmission and the re-transmission of described data are carried out in a continuous manner.
Preferably, according to following steps the mode that described the data repeats to transmit is transmitted:
Set number of repetition and retransmit interval, first transmission and the re-transmission of described data are carried out in the mode of the multiple of described retransmit interval or described retransmit interval.
Preferably, described number of repetition is corresponding with the current channel quality that measures, and channel quality is better, and the number of repetition of employing is less; Otherwise larger.
The present invention also discloses a kind of transmitting device of packet, comprising:
HARQ feedback mechanism determining unit is used for determining whether to be fit to adopt feedback HARQ mechanism according to the characteristics of buffer data;
The first transmitting element is used for when the characteristics of described buffer data are not suitable for adopting feedback HARQ mechanism, sends to comprise the information that adopts without feedback HARQ mechanism that is used to indicate;
The first transmission unit is used for after the first transmitting element transmission information, adopts the mode that repeats to transmit to transmit described buffer data.
Preferably, described information also comprises the information that is used to indicate number of repetition.
Preferably, described device also comprises:
The first uplink synchronous determining unit is used for determining whether to exist uplink synchronous when described HARQ feedback mechanism determining unit is determined to be fit to adopt feedback HARQ mechanism;
The first lock unit is used for by predefined synchronization mechanism triggering terminal, setting up the synchronized relation of network side and end side when not having uplink synchronous;
The second transmitting element is used for sending Downlink Control Information by the HS-SCCH channel when having uplink synchronous;
The second transmission unit after the second transmitting element transmission information, transmits the data of described buffering area.
Preferably, described the first uplink synchronous determining unit comprises:
The detection timer is used for record and receives network side to the time interval of the adjacent twice transmission synch command of terminal, and is every to synch command of end side transmission at network side, carries out a zero clearing, and restarts;
Judging unit, when the time of described detection timer record surpassed a default thresholding, network side did not send synch command to end side with, can judge that uplink synchronous loses, otherwise judgement network side and terminal was in the uplink synchronous state.
Preferably, described device also comprises:
The second uplink synchronous determining unit is used for determining whether to exist uplink synchronous, and triggers described HARQ feedback mechanism determining unit and carry out work when definite uplink synchronous is lost;
The second lock unit is used for by predefined synchronization mechanism triggering terminal, setting up the synchronized relation of network side and end side when described HARQ feedback mechanism determining unit is determined to be fit to adopt feedback HARQ mechanism;
The 3rd transmitting element when being used for having uplink synchronous, sends Downlink Control Information by the HS-SCCH channel;
The 3rd transmission unit after the 3rd transmitting element transmission information, sends the data of described buffering area.
Preferably, described the second uplink synchronous determining unit comprises:
The detection timer is used for record and receives network side to the time interval of the adjacent twice transmission synch command of terminal, and is every to synch command of end side transmission at network side, carries out a zero clearing, and restarts;
Judging unit, when the time of described detection timer record surpassed a default thresholding, network side did not send synch command to end side with, can judge that uplink synchronous loses, otherwise judgement network side and terminal was in the uplink synchronous state.
Preferably, be used to indicate that to adopt without the information of the indication information of feedback HARQ mechanism and the information of number of repetition be to be carried on the HS-SCCH channel described comprising.
Preferably, the invalid form information in the resource indication information in the HS-SCCH channel is as described information and/or the number of repetition information that adopts without the indication information of feedback HARQ mechanism that is used to indicate.
Preferably, the described information that adopts without the indication information of feedback HARQ mechanism and/or number of repetition information that is used to indicate is carried on the default bit in the HARQ information in the HS-SCCH channel.
Preferably, described be used to indicate to adopt without the indication information of feedback HARQ mechanism and/or the information of number of repetition information be carried on the extended bit position of described HS-SCCH channel.
Preferably, the described indication information that adopts without feedback HARQ mechanism that is used to indicate is that user terminal has been received this event of information that is in advance the HS-SCCH channel of binding state with nothing feedback HARQ mechanism.
Preferably, described buffer data is repeated to transmit is that the transmission intercal that sets in advance carries out to described the first transmission unit.
Preferably, described buffer data is repeated to transmit is that transmission intercal and the number of transmissions that sets in advance carries out to described the first transmission unit.
Preferably, described number of repetition is corresponding with the current channel quality that measures, and channel quality is better, and the number of repetition of employing is less; Otherwise larger.
Can from technique scheme, compared with prior art, the present invention can select suitable HARQ mechanism (feedback HARQ mechanism or machine-processed without feedback HARQ) according to data characteristics, particularly continue to keep in the situation of uplink synchronous for need not, adopt the mode without feedback HARQ, flexible adaptation various situations have been avoided the also generation of large situation of expense that spends than the mode that repeatedly retransmits that adopts without the HARQ feedback mechanism for the expense that keeps the shared control channel of uplink synchronous.
Description of drawings
Fig. 1 is the control procedure schematic diagram of HSDPA shared channel timing relationship and HS-SCCH;
Fig. 2 is the flow chart of embodiment one of the transmission method of packet of the present invention;
Fig. 3 is the flow chart of embodiment two of the transmission method of packet of the present invention;
Fig. 4 is the structural representation of embodiment one of the transmitting device of packet of the present invention;
Fig. 5 is the structural representation of embodiment two of the transmitting device of packet of the present invention;
Fig. 6 is the structural representation of embodiment three of the transmitting device of packet of the present invention;
Fig. 7 is the structural representation of the first uplink synchronous determining unit of embodiment two of the transmitting device of a kind of packet of the present invention;
Fig. 8 is the structural representation of the second uplink synchronous determining unit of embodiment three of the transmitting device of a kind of packet of the present invention.
Embodiment
In order to satisfy the growing request to the HRPD (high rate packet data) access service, 3GPP Release5 has introduced the HSDPA technology, and corresponding HS-DSCH, HS-PDSCH, HS-SCCH and the HS-SICH channel introduced.
HS-DSCH is used for bearing downlink HSDPA data, is mapped on the HS-PDSCH channel.
A plurality of user terminals are shared described HS-DSCH channel by time division multiplexing or code division multiplexing, and are accompanied by a DPCH and one or more HS-SCCH.
The HS-SCCH channel is the HSDPA down control channel, take the code channel of two descending SF=16, adopt fixing QPSK (quarternary phase-shift keying (QPSK)) modulation system, the information that is used for carrying HS-DSCH channel, to each HS-DSCH TTI (Transmission Time Interval, Transmission Time Interval), HS-SCCH being arranged is that user terminal carries the relevant Downlink Control Information of HS-DSCH.The information of carrying on the HS-SCCH channel comprises: TFRI (transmission format resource combination) information, be used to indicate the transformat of HS-DSCH subsequently, and comprise time-slot code channel information, modulation system and TBS (transmission block) information of HS-DSCH; HARQ information comprises the HARQ process number, redundancy versions, new data indication and HCSN (HS-SCCH SequenceNumber, the HS-SCCH channel sequence number) sequence that is used for the HS-SCCH channel quality estimation, the user ID mark, be used for distinguishing different user terminal on the shared channel; In addition, HS-SCCH also carries the command word information TPC/SS of uplink synchronous and power control.The channel architecture of HS-SCCH is as shown in table 1 in the existing protocol.
Table 1
The HS-SICH channel is the ascending control channel of HSDPA, takies the code channel of a up SF=16, adopts fixedly QPSK modulation system, be used for the data block that receives on the HS-DSCH channel is replied, when the data block that receives is correct, send ack signal, otherwise, send the NACK signal.And, go back the quality information CQI of feeding back downlink link, to help better base station scheduling, in addition, described HS-SICH is the command word of carries downlink also.
The control procedure of HSDPA shared channel timing relationship and HS-SCCH as shown in Figure 1, the downlink data way is dispatched by NodeB, send Downlink Control Information at the HS-SCCH channel first, indicate the data that user terminal is arranged on the follow-up HS-PDSCH channel, user terminal is understood HS-SCCH channel and the correct transmission block that receives, and utilizes corresponding HS-SICH channel feedback ACK/NACK information.
In Radio Link, there is not continuous synchronization mechanism, when not existing up-downgoing to follow DPCH in the situation such as HSPDA and the common existence of HSUPA, owing to there is not continuous uplink synchronous mechanism, therefore, the base station needs to set up uplink synchronous by extra method by before the HS-SCCH channel dispatch user terminal.
Above-described mechanism is traditional HARQ feedback mechanism, and also use another mechanism in the HSDPA technology, namely the transmission method of packet is used and repeatedly repeat the mechanism that transmits, that is to say, whenever send primary information by the HS-SCCH channel, directly allow to distribute the resource (can be continuous or discontinuous) of one or more TTI, each TTI sends same packet, terminal merges after the data of all TTI of the upper indication of SCCH are all received, and decodes again.The correctness of no matter decoding, feeding back ACK/NACK not.If decoding error retransmits and is finished by high level.
This expense without feedback HARQ mechanism mainly is repeatedly to retransmit the resource that takies to cause, and therefore might once transmit just energy success, and the transmission of back has just sheerly been wasted.But when packet was very little, this waste was also very little.
And the expense of feedback HARQ mechanism is mainly manifested under the desynchronizing state, at first will obtain synchronously, need to take the resource of control channel SCCH/SICH and Random Access Channel, just can obtain synchronously, obtain synchronously after, carry out again follow-up transfer of data.Main expense or synchronizing process produce.
Can find out, because user terminal needs to keep continuously uplink synchronous, so that during the receive data bag, by HS-SICH channel feedback HARQ, data break in transmission is larger, and in the less situation of packet, the expense that spends than the mode that repeatedly retransmits that adopts without feedback HARQ mechanism for the expense that keeps the shared control channel of uplink synchronous is large situation also.For example: under desynchronizing state, use twice repetition just to finish correct transmission without feedback mechanism, and feedback mechanism at first will carry out synchronously, if the number of times that success is transmitted synchronously is no less than twice, obviously the former saves expense, if but synchronously once with regard to transmission success, will see the data volume size of data block so, if the data volume of data block is very little, the expense that adopts the latter to spend still may be larger than the former expense, so in this case, if also adopt feedback HARQ mechanism, be irrational.
So the basic thought of improved technical scheme provided by the invention is: network side determines whether to be fit to adopt feedback HARQ mechanism according to the characteristics of the data of buffering area; When the characteristics of the data of described buffering area are not suitable for feeding back HARQ mechanism, the mode that described the data repeats to transmit are transmitted, and sent to comprise to be used to indicate and adopt without the indication information of feedback HARQ mechanism and the information of number of repetition.
For so that those skilled in the art better understand technical solution of the present invention, be described in detail below in conjunction with drawings and Examples.
Please refer to Fig. 2, be the flow chart of the embodiment one of the transmission method of packet of the present invention.
Specifically may further comprise the steps:
Step S101: judge whether buffer data is fit to adopt feedback HARQ mechanism, if enter step S102; Otherwise, enter step S103.
Network side determines whether to be fit to adopt feedback HARQ mechanism according to the characteristics of buffer data.
Step S102: determine whether to exist uplink synchronous, if enter step S105; Otherwise, enter step S104.
Step S103: send to comprise to be respectively applied to indicate and adopt the information that takies the HS-PDSCH channel without feedback HARQ mechanism, number of repetition and data, enter step S106.
Step S104: by predefined synchronization mechanism triggering terminal, set up the synchronized relation of network side and end side, enter step S105.
Described predetermined synchronization mechanism can be: by HS-SCCH channel or other control channels, as the synch command notification terminal, after terminal receives this synch command, initiate the uplink synchronous process with spcial character or special format.
Step S105: send Downlink Control Information by the HS-SCCH channel, enter step S107.
Network side sends Downlink Control Information to user terminal by the HS-SCCH channel, and described Downlink Control Information is used to indicate the DPA that has this user terminal on the follow-up HS-DSCH channel.
Step S106: described buffer data is transmitted by the mode that repeats to transmit, finish.
User terminal receives being used to indicate of network side transmission and adopts without the indication information of feedback HARQ mechanism and the information of number of repetition, receive described buffer data according to timing relationship at the HS-PDSCH channel that is assigned with, and the data that retransmit are carried out soft merging decoding.Described soft merging decoding belongs to prior art, is not described in detail at this.
Step S107: send described buffer data by the HS-PDSCH channel, finish.
User terminal receives and understands the Downlink Control Information on the HS-SCCH channel, and according to the buffer data on this Downlink Control Information reception HS-PDSCH channel, utilizes corresponding HS-SICH channel feedback ACK/NACK information.This part belongs to prior art, is not described in detail at this.
Need to prove, the information that described data take HS-PDSCH channel information and number of repetition can preset in advance, so among the above-mentioned steps S103, the information that sends can only comprise the indication information that is used to indicate employing nothing feedback HARQ mechanism, perhaps only comprise and be used to indicate the information that adopts without feedback HARQ mechanism and number of repetition, perhaps only comprise to be used to indicate and adopt HS-PDSCH channel information machine-processed without feedback HARQ and that data take.
Among the above-mentioned steps S103, when only comprising, the information that sends is used to indicate the indication information that adopts without feedback HARQ mechanism, when perhaps also comprising simultaneously the HS-PDSCH channel information that data take, the described indication information that is used to indicate employing nothing feedback HARQ mechanism can be presupposed information, it for example can be bit value 1 or 0, also can be number of repetition information, for example: end side receives the number of repetition information that network side sends, can determine to adopt the mechanism without feedback HARQ, this time, number of repetition information can comprise two effects, and an effect is the indication number of repetition, and another effect is that the mechanism without feedback HARQ is adopted in indication.In addition, described indication information can also be number of repetition numerical value, for example: when end side receives number of repetition numerical value that network side sends and equals preset value, can determine to adopt the mechanism without feedback HARQ.
And be used to indicate the indication information that adopts without feedback HARQ mechanism when the information that sends comprises, and during the information of number of repetition, described to be used to indicate the indication information that adopts without feedback HARQ mechanism be presupposed information, for example bit value 1 or 0.
Fig. 3 shows the flow chart of embodiment two of the transmission method of packet of the present invention.
Step S201: network side judges whether to exist uplink synchronous, if enter step S206; Otherwise, enter step S202.
Step S202: network side determines whether to be fit to adopt feedback HARQ mechanism according to the characteristics of buffer data, if enter step S205; Otherwise, enter step S203.
Step S203: send to comprise to be used to indicate and adopt without the indication information of feedback HARQ mechanism and the information of number of repetition, enter step S204.
Step S204: described buffer data is transmitted by the mode that repeats to transmit, finish.
Step S205: by predefined synchronization mechanism triggering terminal, set up the synchronized relation of network side and end side, enter step S206.
Step S206: send Downlink Control Information by the HS-SCCH channel, enter step S207.
Network side sends Downlink Control Information to user terminal by the HS-SCCH channel, and described Downlink Control Information is used to indicate the data that have this user terminal on the follow-up HS-PDSCH channel.
Step S207: send described buffer data by the HS-PDSCH channel, finish.
Network side determines whether that being fit to adopt feedback HARQ mechanism is to carry out according to the data volume of buffer data among the step S203 of the step S101 of above-described embodiment one and embodiment two, in detail, data volume with described buffer data compares with the data volume threshold value that sets in advance exactly, when the data volume of described buffer data during less than this data volume threshold value, just determine this buffer data, be fit to adopt the mechanism without feedback HARQ, otherwise, determine to be fit to adopt feedback HARQ mechanism.
Another determines whether to be fit to adopt the method for feedback HARQ mechanism is that the resource quantity that transmission takies according to buffer data is assessed, in detail, at first determine the required resource of these data of transmission according to data volume and the channel quality of current buffering area, HS-PDSCH code channel number for example, and compare with default resource quantity threshold value, if less than this default thresholding, then be fit to adopt the mechanism without feedback HARQ, otherwise be fit to adopt the HARQ mechanism that feedback is arranged.
Determine whether among above-mentioned all embodiment to exist the mode of uplink synchronous to be: arrange one and detect timer; Network side is every to send a synch command to end side, triggers the zero clearing of described detection timer, and restarts; When the time of described detection timer record surpassed a default thresholding, network side was to end side transmission synch command with ing, can determine that uplink synchronous loses, otherwise, determine that network side and terminal are in the uplink synchronous state.
Described default thresholding can be adjusted according to user's request or according to the actual conditions of network.
Need to prove that the concrete mode that described buffer data is transmitted by the mode that repeats to transmit among above-mentioned all embodiment comprises following two kinds:
First kind of way: set certain number of repetition n, the first transmission of data and data re-transmission all are to carry out in a continuous manner.
The second way: set certain number of repetition n and retransmit interval m, the first transmission of data and m the TTI mode in data re-transmission interval are transmitted.
Number of repetition n in the above-mentioned dual mode and retransmit interval m can adjust according to user's request and network actual conditions.
In order to save the expense of control channel, can only when data be transmitted for the first time, send indication information by the HS-SCCH channel, and when data re-transmission, not send the operation of indication information.
In addition, need to prove that it is that network side sends to end side by the HS-SCCH channel that being used to indicate among above-mentioned all embodiment adopted without the indication information of feedback HARQ mechanism and the information of number of repetition.
The below introduces several modes that send the information of described indication information and number of repetition by the HS-SCCH channel: mode one: the invalid form information in the resource indication information in the HS-SCCH channel is adopted without the indication information of feedback HARQ mechanism and the information of number of repetition as being used to indicate.
At present in the HS-SCCH channel architecture, by " the Stop Code " of 4 bits and " the Start Code " of 4 bits, the code channel resource of expression HSDPA resource occupation, under normal circumstances, " StopCode " need to be greater than or equal to " Start Code ", especially, for Stop Code "=form of " 0000 ", " Start Code "=" 1111 "; expression SF (spreading factor)=1; except this situation; all the other " Start Code " all belong to invalid form greater than the form of " Stop Code ", these invalid forms all not have to define.Therefore the application proposes " StartCode " in the HS-SCCH channel adopted without the indication information of feedback HARQ mechanism and the information of number of repetition as being used to indicate greater than the multiple invalid form information of " Stop Code ".As shown in table 2.
Table 2
Mode two: the default bit carrying in the HARQ information in the HS-SCCH channel is used to indicate employing without the indication information of feedback HARQ mechanism and the information of number of repetition.
When data are adopted the repeated retransmission mode, as top said, data just pass and retransmit in continuous T TI mode or carry out in the mode of interval T TI, therefore need not the HARQ process identifier (reference table 1) of 3 bits in the HS-SCCH control information, so, can be used to indicate the indication information that do not carry out the HARQ feedback and the information of number of repetition with the carrying of this bit.Even can arrange only to adopt QPSK or 16-QAM mode without the repeated retransmission of feedback HARQ mechanism, adopt a kind of HARQ redundant version number.Can use so original bit that is used for carrying HARQ process identifier and redundancy version information and modulation system in the HS-SCCH channel, this bit is used for carrying being used to indicate adopt without the indication information of feedback HARQ mechanism and the information of number of repetition.
Dual mode can be so that Internet resources be fully utilized above adopting.
Mode three: the HS-SCCH channel is expanded, increased n bit (n＞0) on original basis, these bits are used for carrying and are used to indicate employing without the indication information of feedback HARQ mechanism and the information of number of repetition.
Mode four: when wireless link, the high-level signaling configuration is without the binding relationship of feedback HARQ mechanism and HS-SCCH channel, set up without the binding relationship of feedback HARQ mechanism with the HS-SCCH channel, receive described this event of HS-SCCH channel information as the indication of adopting without feedback HARQ mechanism with user terminal.That is to say, when terminal receives for scheduling control information itself from the HS-SCCH channel, can assert that this data transfer is the transfer of data without feedback HARQ mechanism.In addition.Also can adopt other high-level signaling to be configured.
Described number of repetition is corresponding with the current channel quality that measures, and channel quality is better, and the number of repetition of employing is less; Otherwise larger.
The embodiment of the invention can be selected suitable HARQ mechanism (feedback HARQ mechanism or machine-processed without feedback HARQ) according to data characteristics, particularly continue to keep in the situation of uplink synchronous for need not, adopt the mode without feedback HARQ, flexible adaptation various situations have been avoided the also generation of large situation of expense that spends than the mode that repeatedly retransmits that adopts without the HARQ feedback mechanism for the expense that keeps the shared control channel of uplink synchronous.
The present invention also discloses a kind of transmitting device of packet, please refer to Fig. 4, be the structural representation of the embodiment one of the transmitting device of a kind of packet of the present invention.
This transmitting device comprises: HARQ feedback mechanism determining unit 111, the first transmitting element 112, the first transmission unit 113.
Operation principle and the course of work of this transmitting device are as follows:
Described HARQ feedback mechanism determining unit 111 determines whether to be fit to adopt feedback HARQ mechanism according to the characteristics of buffer data; When the first transmitting element 112 determines that in described HARQ feedback mechanism determining unit 111 characteristics of described buffer datas are not suitable for adopting the HARQ feedback, send to comprise to end side and be respectively applied to indicate the information that takies the HS-PDSCH channel without feedback HARQ mechanism, number of repetition and data that adopts; Described the first transmission unit 113 adopts the mode that repeats to transmit to transmit described buffer data after described the first transmitting element 112 transmission information.
The user terminal of end side receives being used to indicate of network side transmission and adopts without the indication information of feedback HARQ mechanism and the information of number of repetition, receives described buffer data according to timing relationship, and the data that retransmit is carried out soft merging decode.Described soft merging decoding belongs to prior art, is not described in detail at this.
Fig. 5 shows the structural representation of embodiment two of the transmitting device of a kind of packet of the present invention.
On the basis of above-described embodiment, this device can further include: the first uplink synchronous determining unit 114, the first lock unit 115, the second transmitting element 116 and the second transmission unit 117.
When described HARQ feedback mechanism determining unit 111 was determined to be fit to adopt feedback HARQ mechanism, described the first uplink synchronous determining unit 114 determined whether network side and end side exist uplink synchronous; When described the first lock unit 115 determines that in the first uplink synchronous determining unit 114 network side and end side do not exist uplink synchronous to concern, by predefined synchronization mechanism triggering terminal, to set up the synchronized relation of network side and end side; When described the second transmitting element 116 determines that in the first uplink synchronous determining unit 114 network side and end side exist uplink synchronous to concern, perhaps when described the first lock unit 115 is set up the synchronized relation of network side and end side, send Downlink Control Information by the HS-SCCH channel to certain user terminal, described Downlink Control Information is used to indicate the data that have this user terminal on the follow-up HS-PDSCH channel; Described the second transmission unit 117 sends described buffer data after described the second transmitting element 116 transmission information.
Fig. 6 shows the structural representation of embodiment three of the transmitting device of a kind of packet of the present invention.
On the basis of above-described embodiment one, this device further comprises: the second uplink synchronous determining unit 118, the second lock unit 119, the 3rd transmitting element 120 and the 3rd transmission unit 121.
Described the second uplink synchronous determining unit 118 determines whether network side and end side exist the uplink synchronous relation, and the result is offered described HARQ feedback mechanism determining unit 111.When network side and end side are in the uplink synchronous state, send Downlink Control Information by described the 3rd transmitting element 120 by the HS-SCCH channel, described Downlink Control Information is used to indicate the data that have this user terminal on the follow-up HS-PDSCH channel; Described the 3rd transmission unit 121 sends described buffer data after described the 3rd transmitting element 120 transmission information.
And when network side and end side are not in the uplink synchronous state, described HARQ feedback mechanism determining unit 111 determines whether to be fit to adopt feedback HARQ mechanism, if be fit to, then by described the second lock unit 119 by predefined synchronization mechanism triggering terminal, to set up the synchronized relation of network side and end side.And sending Downlink Control Information by the HS-SCCH channel to certain user terminal by described the 3rd transmitting element 120, described the 3rd transmission unit 121 sends described buffer data after described the 3rd transmitting element 120 transmission information; If be not suitable for, then comprise the information that takies the HS-PDSCH channel without indication information, number of repetition and the data of feedback HARQ mechanism that adopts that is used to indicate by the first transmitting element 112 to the end side transmission; Described the first transmission unit 113 adopts the mode that repeats to transmit to transmit described buffer data after described the first transmitting element 112 transmission information.
Described HARQ feedback mechanism determining unit 111 among above-mentioned all embodiment determines whether to adopt the method for feedback HARQ mechanism partly to have a detailed description at said method, does not repeat them here.
Need to prove, among above-mentioned all embodiment, described predetermined synchronization mechanism can be: network side is by HS-SCCH channel or other control channels, with spcial character or special format as the synch command informing user terminal, after user terminal receives this synch command, initiate the uplink synchronous process.
After obtaining uplink synchronous, user terminal receives and understands the Downlink Control Information on the HS_SCCH channel, and according to the buffer data on this Downlink Control Information reception HS_PDSCH channel, utilizes corresponding HS-SICH channel feedback ACK/NACK information.
Described the first transmitting element 112 is will comprise to be used to indicate to adopt without the indication information of feedback HARQ mechanism and the information of number of repetition by the HS-SCCH channel to send.
The first transmitting element 112 sends the information of described indication information and number of repetition by the HS-SCCH channel mode has had detailed introduction in the said method part, does not repeat them here.Need to prove, the HS-PDSCH channel information that the information of described number of repetition and data take can preset in advance, if preset in advance, then the information of described the first transmitting element 112 transmissions can only comprise the indication information that is used to indicate employing nothing feedback HARQ mechanism, perhaps only comprise and be used to indicate the information that adopts without feedback HARQ mechanism and number of repetition, perhaps only comprise to be used to indicate and adopt HS-PDSCH channel information machine-processed without feedback HARQ and that data take.
In addition, need to prove also that among above-mentioned all embodiment, 113 pairs of described buffer datas of described the first transmission unit repeat transmission can carry out in a continuous manner, also can predefined the number of transmissions, the transmission intercal that sets in advance to be separated by carries out.Described number of repetition is corresponding with the current channel quality that measures, and channel quality is better, and the number of repetition of employing is less; Otherwise larger.
Fig. 7 shows the structural representation of the first uplink synchronous determining unit of embodiment two of the transmitting device of a kind of packet of the present invention.
In above-described embodiment, described the first uplink synchronous determining unit 114 comprises: detect timer 1141 and judging unit 1142.
Described detection timer 1141 is used for record and receives network side to the time interval of the adjacent twice transmission synch command of terminal, and is every to synch command of end side transmission at network side, carries out a zero clearing, and restarts.
Described judging unit 1142 is used for when the time of described detection timer record surpasses a default thresholding, if, can judging uplink synchronous to end side transmission synch command, loses network side, otherwise, judge that network side and terminal are in the uplink synchronous state.
The second uplink synchronous determining unit 118 structures of embodiment three are identical with described the first uplink synchronous determining unit 114, as shown in Figure 8, are the structural representation of the second uplink synchronous determining unit of the embodiment three of the transmitting device of a kind of packet of the present invention.
Unlike the prior art be, the embodiment of the invention determines whether to be fit to adopt feedback HARQ mechanism by HARQ feedback mechanism determining unit 111, can select suitable HARQ mechanism (feedback HARQ mechanism or machine-processed without feedback HARQ) according to data characteristics, particularly continue to keep in the situation of uplink synchronous for need not, adopt the mode without feedback HARQ, flexible adaptation various situations have been avoided also large situation of the expense that spends than the mode that repeatedly retransmits that adopts without the HARQ feedback mechanism for the expense that keeps the shared control channel of uplink synchronous.
More than disclosed only be preferred implementation of the present invention; but the present invention is not limited thereto; any those skilled in the art can think do not have a creationary variation, and not breaking away from some improvements and modifications of doing under the principle of the invention prerequisite, all should drop in protection scope of the present invention.
Claims (47)
1. the transmission method of a packet is characterized in that, comprising:
Network side determines whether to be fit to adopt feedback HARQ mechanism according to the characteristics of buffer data;
When the characteristics of the data of described buffering area are not suitable for adopting feedback HARQ mechanism, the mode that described the data repeats to transmit are transmitted, and sent and comprise the information that adopts without the indication information of feedback HARQ mechanism that is used to indicate.
2. the method for claim 1 is characterized in that, described information also comprises the information that is used to indicate number of repetition.
3. the method for claim 1 is characterized in that, described indication information is default bit information.
4. method as claimed in claim 2 is characterized in that, described indication information is default bit information.
5. the method for claim 1 is characterized in that, described indication information is number of repetition information.
6. the method for claim 1 is characterized in that, also comprises:
When the characteristics of the data of described buffering area are fit to adopt feedback HARQ, determine whether to exist uplink synchronous;
If there is no uplink synchronous by predefined synchronization mechanism triggering terminal, is set up the synchronized relation of network side and end side; Otherwise, send described buffer data, and before sending, send Downlink Control Information by the HS-SCCH channel.
7. method as claimed in claim 2 is characterized in that, also comprises:
When the characteristics of the data of described buffering area are fit to adopt feedback HARQ, determine whether to exist uplink synchronous;
If there is no uplink synchronous by predefined synchronization mechanism triggering terminal, is set up the synchronized relation of network side and end side; Otherwise, send described buffer data, and before sending, send Downlink Control Information by the HS-SCCH channel.
8. the method for claim 1 is characterized in that, network side determines whether to be fit to adopt before the feedback HARQ mechanism according to the characteristics of the data of buffering area, also comprises:
Judge whether to exist uplink synchronous, when terminal is in the state of uplink synchronous, adopt feedback HARQ mechanism, send the data of described buffering area, before sending, send Downlink Control Information by the HS-SCCH channel, and process ends.
9. method as claimed in claim 2 is characterized in that, network side determines whether to be fit to adopt before the feedback HARQ mechanism according to the characteristics of the data of buffering area, also comprises:
Judge whether to exist uplink synchronous, when terminal is in the state of uplink synchronous, adopt feedback HARQ mechanism, send the data of described buffering area, before sending, send Downlink Control Information by the HS-SCCH channel, and process ends.
10. method as claimed in claim 6 is characterized in that, determines whether to exist uplink synchronous according to following steps:
Arrange one and detect timer;
Network side is every to send a synch command to end side, triggers the zero clearing of described detection timer, and restarts;
When the time of described detection timer record surpassed a default thresholding, network side was to end side transmission synch command with ing, can determine that uplink synchronous loses, otherwise, determine that network side and terminal are in the uplink synchronous state.
11. method as claimed in claim 7 is characterized in that, determines whether to exist uplink synchronous according to following steps:
Arrange one and detect timer;
Network side is every to send a synch command to end side, triggers the zero clearing of described detection timer, and restarts;
When the time of described detection timer record surpassed a default thresholding, network side was to end side transmission synch command with ing, can determine that uplink synchronous loses, otherwise, determine that network side and terminal are in the uplink synchronous state.
12. the method for claim 1 is characterized in that, determines whether to be fit to adopt feedback HARQ mechanism according to following steps:
Set in advance a data volume threshold value;
Determine whether to adopt feedback HARQ mechanism according to the data volume of described buffer data and the comparative result of described data volume threshold value.
13. method as claimed in claim 2 is characterized in that, determines whether to be fit to adopt feedback HARQ mechanism according to following steps:
Set in advance a data volume threshold value;
Determine whether to adopt feedback HARQ mechanism according to the data volume of described buffer data and the comparative result of described data volume threshold value.
14. the method for claim 1 is characterized in that, determines whether to be fit to adopt feedback HARQ mechanism according to following steps:
Set in advance a resource quantity threshold value;
Data volume and current channel quality information according to buffer data are determined the needed resource of these data of transmission, and compare with the resource quantity threshold value of presetting, and determine whether to adopt feedback HARQ mechanism according to comparative result.
15. method as claimed in claim 2 is characterized in that, determines whether to be fit to adopt feedback HARQ mechanism according to following steps:
Set in advance a resource quantity threshold value;
Data volume and current channel quality information according to buffer data are determined the needed resource of these data of transmission, and compare with the resource quantity threshold value of presetting, and determine whether to adopt feedback HARQ mechanism according to comparative result.
16. the method for claim 1 is characterized in that, the described information that is used to indicate the indication information that adopts nothing feedback HARQ mechanism that comprises is carried on the HS-SCCH channel.
17. method as claimed in claim 2 is characterized in that, the described information that is used to indicate the indication information that adopts nothing feedback HARQ mechanism that comprises is carried on the HS-SCCH channel.
18. method according to claim 5 is characterized in that, described number of repetition information is carried on the HS-SCCH channel.
19. method as claimed in claim 17 is characterized in that, with the invalid form information in the resource indication information in the HS-SCCH channel as being used to indicate indication information and/or the number of repetition information that adopts without feedback HARQ mechanism.
20. method as claimed in claim 17 is characterized in that, the default bit carrying in the HARQ information in the HS-SCCH channel is used to indicate indication information and/or the number of repetition information that adopts without feedback HARQ mechanism.
21. method as claimed in claim 17 is characterized in that, the HS-SCCH channel is expanded, and increases some bits, is used for indication information and/or number of repetition information that nothing feedback HARQ mechanism is adopted in the carrying indication.
22. method as claimed in claim 16 is characterized in that, sets up without the binding relationship of feedback HARQ mechanism with the HS-SCCH channel, receives described this event of HS-SCCH channel information as the indication of adopting without feedback HARQ mechanism with user terminal.
23. method as claimed in claim 16 is characterized in that, according to following steps the mode that described the data repeats to transmit is transmitted:
Set number of repetition, first transmission and the re-transmission of described data are carried out in a continuous manner.
24. method as claimed in claim 16 is characterized in that, according to following steps the mode that described the data repeats to transmit is transmitted:
Set number of repetition and retransmit interval, first transmission and the re-transmission of described data are carried out in the mode of the multiple of described retransmit interval or described retransmit interval.
25., it is characterized in that described number of repetition is corresponding with the current channel quality that measures such as claim 23 or 24 described methods, channel quality is better, the number of repetition of employing is less; Otherwise larger.
26. method as claimed in claim 4 is characterized in that, described comprise to be used to indicate to adopt without the indication information of feedback HARQ mechanism and/or the information of number of repetition information be carried on the HS-SCCH channel.
27. method as claimed in claim 7 is characterized in that, described comprise to be used to indicate to adopt without the indication information of feedback HARQ mechanism and/or the information of number of repetition information be carried on the HS-SCCH channel.
28. method as claimed in claim 9 is characterized in that, described comprise to be used to indicate to adopt without the indication information of feedback HARQ mechanism and/or the information of number of repetition information be carried on the HS-SCCH channel.
29. method as claimed in claim 11 is characterized in that, described comprise to be used to indicate to adopt without the indication information of feedback HARQ mechanism and/or the information of number of repetition information be carried on the HS-SCCH channel.
30. method as claimed in claim 13 is characterized in that, described comprise to be used to indicate to adopt without the indication information of feedback HARQ mechanism and/or the information of number of repetition information be carried on the HS-SCCH channel.
31. method as claimed in claim 15 is characterized in that, described comprise to be used to indicate to adopt without the indication information of feedback HARQ mechanism and/or the information of number of repetition information be carried on the HS-SCCH channel.
32. the transmitting device of a packet is characterized in that, comprising:
HARQ feedback mechanism determining unit is used for determining whether to be fit to adopt feedback HARQ mechanism according to the characteristics of buffer data;
The first transmitting element is used for when the characteristics of described buffer data are not suitable for adopting feedback HARQ mechanism, sends to comprise the information that adopts without the indication information of feedback HARQ mechanism that is used to indicate;
The first transmission unit is used for after the first transmitting element transmission information, adopts the mode that repeats to transmit to transmit described buffer data.
33. device as claimed in claim 32 is characterized in that, described information also comprises the information that is used to indicate number of repetition.
34., it is characterized in that described indication information is default bit information such as claim 32 or 33 described devices.
35. device as claimed in claim 32 is characterized in that, described indication information is number of repetition information.
36. such as claim 32 or 33 described devices, it is characterized in that, also comprise:
The first uplink synchronous determining unit is used for determining whether to exist uplink synchronous when described HARQ feedback mechanism determining unit is determined to be fit to adopt feedback HARQ mechanism;
The first lock unit is used for by predefined synchronization mechanism triggering terminal, setting up the synchronized relation of network side and end side when not having uplink synchronous;
The second transmitting element is used for sending Downlink Control Information by the HS-SCCH channel when having uplink synchronous;
The second transmission unit after the second transmitting element transmission information, transmits the data of described buffering area.
37. device as claimed in claim 36 is characterized in that, described the first uplink synchronous determining unit comprises:
The detection timer is used for record and receives network side to the time interval of the adjacent twice transmission synch command of terminal, and is every to synch command of end side transmission at network side, carries out a zero clearing, and restarts;
Judging unit, when the time of described detection timer record surpassed a default thresholding, network side did not send synch command to end side with, can judge that uplink synchronous loses, otherwise judgement network side and terminal was in the uplink synchronous state.
38. such as claim 32 or 33 described devices, it is characterized in that, also comprise:
The second uplink synchronous determining unit is used for determining whether to exist uplink synchronous, and triggers described HARQ feedback mechanism determining unit and carry out work when definite uplink synchronous is lost;
The second lock unit is used for by predefined synchronization mechanism triggering terminal, setting up the synchronized relation of network side and end side when described HARQ feedback mechanism determining unit is determined to be fit to adopt feedback HARQ mechanism;
The 3rd transmitting element when being used for having uplink synchronous, sends Downlink Control Information by the HS-SCCH channel;
The 3rd transmission unit after the 3rd transmitting element transmission information, sends the data of described buffering area.
39. device as claimed in claim 38 is characterized in that, described the second uplink synchronous determining unit comprises:
The detection timer is used for record and receives network side to the time interval of the adjacent twice transmission synch command of terminal, and is every to synch command of end side transmission at network side, carries out a zero clearing, and restarts;
Judging unit, when the time of described detection timer record surpassed a default thresholding, network side did not send synch command to end side with, can judge that uplink synchronous loses, otherwise judgement network side and terminal was in the uplink synchronous state.
40. device as claimed in claim 33 is characterized in that, be used to indicate that to adopt without the information of the indication information of feedback HARQ mechanism and the information of number of repetition be to be carried on the HS-SCCH channel described comprising.
41. device as claimed in claim 40 is characterized in that, the invalid form information in the resource indication information in the HS-SCCH channel is as described indication information and/or the number of repetition information that adopts without feedback HARQ mechanism that is used to indicate.
42. device as claimed in claim 40 is characterized in that, the described information that adopts without the indication information of feedback HARQ mechanism and/or number of repetition information that is used to indicate is carried on the default bit in the HARQ information in the HS-SCCH channel.
43. device as claimed in claim 40 is characterized in that, described be used to indicate to adopt without the indication information of feedback HARQ mechanism and/or the information of number of repetition information be carried on the extended bit position of described HS-SCCH channel.
44. device as claimed in claim 40, it is characterized in that, the described information that adopts without the indication information that feeds back HARQ mechanism that is used to indicate is that user terminal has been received this event of information that is in advance the HS-SCCH channel of binding state with nothing feedback HARQ mechanism.
45. device as claimed in claim 40 is characterized in that, it is that the transmission intercal that sets in advance carries out that described the first transmission unit repeats described buffer data to transmit.
46. device as claimed in claim 40 is characterized in that, it is that transmission intercal and the number of transmissions that sets in advance carries out that described the first transmission unit repeats described buffer data to transmit.
47., it is characterized in that described number of repetition is corresponding with the current channel quality that measures such as claim 45 or 46 described methods, channel quality is better, the number of repetition of employing is less; Otherwise larger.
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| CN 200710121646 CN101388756B (en) | 2007-09-11 | 2007-09-11 | Data package transmission method and apparatus |
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Cited By (1)
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| WO2016185081A1 (en) * | 2015-05-15 | 2016-11-24 | Nokia Technologies Oy | Quality of service driven receiver selective hybrid automatic repeat request for point-to-multipoint communication |
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| JP5023123B2 (en) * | 2009-09-08 | 2012-09-12 | 株式会社エヌ・ティ・ティ・ドコモ | Radio base station and mobile communication method |
| KR101757087B1 (en) * | 2013-01-18 | 2017-07-11 | 후아웨이 테크놀러지 컴퍼니 리미티드 | Method, base station, and user equipment for processing feedback information |
| CN104321997B (en) * | 2013-02-01 | 2018-08-21 | 华为技术有限公司 | Method, base station and the user equipment of transmission data |
| CN104811262B (en) * | 2014-01-24 | 2019-06-11 | 中兴通讯股份有限公司 | Duplicate message sending, receiving method and base station and user equipment |
| US10178690B2 (en) | 2016-01-11 | 2019-01-08 | Telefonaktiebolaget Lm Ericsson (Publ) | Transmission and reception of a data block in a wireless communication system |
| US11102098B2 (en) | 2016-06-17 | 2021-08-24 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method and device for data transmission |
| BR112019019660A2 (en) * | 2017-03-20 | 2020-04-22 | Guangdong Oppo Mobile Telecommunications Corp Ltd | transmission method of control signaling, base station and terminal. |
| CN108809543B (en) * | 2017-05-05 | 2021-12-31 | 华为技术有限公司 | Method and device for transmitting data |
| CN109217991B (en) * | 2017-07-04 | 2021-10-26 | 中国移动通信有限公司研究院 | Terminal overload processing method, terminal, base station and computer storage medium |
| WO2019153125A1 (en) * | 2018-02-06 | 2019-08-15 | Oppo广东移动通信有限公司 | Data transmission method and device, and computer storage medium |
| CN112583537B (en) * | 2019-09-30 | 2022-07-01 | 维沃移动通信有限公司 | Indication and determination method and device for HARQ (hybrid automatic repeat request) feedback mode |
| EP4057736B1 (en) * | 2019-12-26 | 2024-04-24 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Parameter setting method, parameter indication method, terminal device, and network device |
| CN114946142A (en) * | 2020-02-14 | 2022-08-26 | 中兴通讯股份有限公司 | Method and apparatus for transmitting feedback information |
| CN114788204B (en) * | 2020-02-28 | 2023-11-10 | Oppo广东移动通信有限公司 | Method, device and equipment for determining state of HARQ (hybrid automatic repeat request) process |
| WO2021213611A1 (en) * | 2020-04-20 | 2021-10-28 | Huawei Technologies Co., Ltd. | An appratus and a method for selective multiple packet transmission for preferred packets |
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