CN102271364A - Data packet transmission method, device and system - Google Patents
Data packet transmission method, device and system Download PDFInfo
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- CN102271364A CN102271364A CN2010101981497A CN201010198149A CN102271364A CN 102271364 A CN102271364 A CN 102271364A CN 2010101981497 A CN2010101981497 A CN 2010101981497A CN 201010198149 A CN201010198149 A CN 201010198149A CN 102271364 A CN102271364 A CN 102271364A
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Abstract
The invention discloses a data packet transmission method, a data packet transmission device and a data packet transmission system. The data packet transmission method comprises the following steps of: receiving a data packet characteristic identifier from a network side, and resolving a data packet characteristic according to a preset mapping relationship; and transmitting a data packet according to the data packet characteristic. In the data packet transmission method, the data packet transmission device and the data packet transmission system, the data packets are transmitted according to the data packet characteristics, the data packets with high priorities are preferably transmitted, and mainly radio link control (RLC) retransmitted data packets and RLC state data packets are preferably transmitted to promote a terminal to faster receive downlink data, thereby accelerating the RLC state response of the terminal to the network side and further accelerating the RLC downlink window updating of the terminal. By the method, the device and the system, the sliding of RLC uplink and downlink sliding windows is accelerated, data transmission speed is increased, data throughput is improved and the experiences of a user in a service are also improved.
Description
Technical field
The present invention relates to a kind of moving communicating field, relate in particular to a kind of data pack transmission method, Apparatus and system.
Background technology
High speed downlink packet inserts (High Speed Downlink Packet Access, be called for short HSDPA), it is packet domain enhancement techniques in the 3-G (Generation Three mobile communication system), under the HSDPA technology, adopt HARQ (Hybrid Automatic Repeat reQuest) technology and fast dispatch technology, base station (being called Nodeb in the moving communication system of the third generation) is according to the situation of the quality of eating dishes without rice or wine, selectively use adjustment mode (16QAM or QPSK) to send data, this just require Nodeb in advance the buffer memory partial data dispatch, wherein Nodeb carries out data cached according to priority query, this formation is an entity (First In First Out who transmits first in first out according to the order of sequence, be called for short FIFO), and a RAB (RAB, RadioAccess Bear) corresponding Radio Link control (Radio Link Control, being called for short RLC) entity is simultaneously corresponding with a priority query, and therefore data passes all is sending order transmission according to the source end in the HSDPA system.The HSPA+ system is the follow-up evolution system of HSDPA, and its down direction data processing method and HSDPA are similar.
The radio link control rlc layer is positioned on the radio network controller (Radio NetWorkControl, be called for short RNC), for user and control data provide segmentation and retransmit professional.RLC mainly is divided into pattern: transparent mode (TM), Unacknowledged Mode (UM), affirmation mode (AM).For data service,, adopt affirmation mode to carry out Data transmission in order to guarantee the transfer reliability of data.The characteristics of RLCAM pattern maximum are based on the flow control of sliding window, and promptly there is send window in the RLC transmitter side, and data send maximum sequence number can not surpass this window, receive the affirmation of receiving terminal when transmitting terminal after, could mobile send window, send more data.In the data service, the up direction of RLC and the send window of down direction are to be safeguarded by terminal and RNC respectively.
The data that the RLC that Nodeb receives issues have several types: RLC state data packets and RLC data packet, and be divided into RLC New Development packet and RLC retransmission data packet may in the RLC data packet.In traditional HSDPA system, these packets transmit according to the order of sequence.
Wherein, the delay of the transmission of RLC retransmission data packet may can cause terminal can not in time receive downlink data, and terminal can not be responded the RLC state data packets to network side in time, thereby has reduced the speed of the renewal of network side RLC down direction window.The RLC state data packets is used to upgrade the up send window of end side, if RLC state data packets transmission lag then can cause the slow of the up send window renewal speed of end side.The transmission lag of RLC retransmission data packet may and RLC state data packets can cause RLC up direction and down direction sliding window to slide slowly, influences uplink and downlink bearing data transmission speed and data throughout, also can reduce the Experience Degree of user to business.
Summary of the invention
The objective of the invention is to, a kind of data pack transmission method, Apparatus and system are provided, accelerate data distributing speed, improve data throughout.
For achieving the above object, according to an aspect of the present invention, provide a kind of data pack transmission method, comprising: receive the packet characteristic sign that network side sends, separate out the packet characteristic according to default mapping relations tabulation; Transmit described packet according to described packet characteristic.
For achieving the above object, according to another aspect of the present invention, provide a kind of base station, comprising: parsing module, be used for analysing the packet characteristic sign that receives the network side transmission according to default mapping relations tabulation, obtain the packet characteristic; Transport module is used for transmitting described packet according to described packet characteristic.
For achieving the above object, according to another aspect of the present invention, provide a kind of data packet transmission system, comprising: RNC, be used for characteristic according to packet for each packet generates corresponding data bag characteristic sign, be sent to the base station; The base station is used for analysing according to default mapping relations tabulation and receives the packet characteristic sign that network side sends, obtain the packet characteristic, and transmits described packet according to described packet characteristic.
Data pack transmission method of the present invention, Apparatus and system, by transmission according to packet Characteristics Control packet, the preferential high packet of priority that sends, among the present invention, mainly be preferentially to send RLC retransmission data packet may and RLC state data packets, can impel terminal to receive downlink data sooner, thereby accelerate the speed of terminal to the RLC state of network side response, the further renewal of accelerating network side RLC down direction window.The present invention quickens the RLC up direction and the down direction sliding window slides, and speeding up data transmission speed improves data throughout, has also improved the Experience Degree of user to business.
Description of drawings
Fig. 1 is the flow chart of data pack transmission method embodiment of the present invention;
Fig. 2 is HS-DSCH DATA TYPE 1 frame assumption diagram under the HSDPA scene in the embodiment of the invention;
Fig. 3 is HS-DSCH DATA TYPE 2 frame assumption diagrams under the HSPA+ scene in the embodiment of the invention;
Fig. 4 is the structure chart of base station embodiment of the present invention;
Fig. 5 is the structure chart of data packet transmission system embodiment of the present invention.
Embodiment
The present invention is described in detail below in conjunction with accompanying drawing.
Method embodiment
As shown in Figure 1, data pack transmission method embodiment of the present invention may further comprise the steps:
Step 102, radio network controller (Radio Network Controller is called for short RNC) identifies for each packet generates corresponding data bag characteristic according to the characteristic of packet, is sent to the base station, in the present embodiment, RNC adds this packet characteristic sign in the HS-DSCH frame;
Step 104, base station receive the HS-DSCH frame, therefrom extract packet characteristic sign, and separate out the packet characteristic according to default mapping relations tabulation;
Step 106, the base station is sent to terminal according to the packet characteristic with the packet of correspondence.
In the present embodiment, the packet characteristic comprises: type of data packet and transmission priority.Type of data packet mainly comprises: RLC New Development packet, RLC retransmission data packet may and RLC state data packets.Wherein, the priority of RLC retransmission data packet may and RLC state data packets is higher than RLC New Development priority of data packets.Preferably, the priority that can also further set the RLC state data packets is higher than the priority of RLC retransmission data packet may.
Wherein, the RLC retransmission data packet may is the packet that the terminal request network side is retransmitted, rather than the retransmission packet that initiatively sends of network.The RLC state data packets comprises: RLC confirms packet and the non-affirmation packet of RLC, but does not comprise RLC reset mode packet and RLC movably receiving window state data packets.
Be higher than RLC New Development priority of data packets if only set the priority of RLC retransmission data packet may and RLC state data packets, then the sign of the packet characteristic in the HS-DSCH frame comprises DT field and PRI field, represent type of data packet and transmission priority respectively, the mapping relations of packet characteristic and packet characteristic sign are as shown in table 1 below.
| PRI | DT | |
| The RLC retransmission data packet may | 1 | 0 |
| The RLC |
1 | 1 |
| Need not the preferential RLC that sends other according to bag | 0 | - |
Table 1
The priority of further setting the RLC state data packets if desired is higher than the priority of RLC retransmission data packet may, then can distinguish the priority of RLC state data packets and RLC retransmission data packet may according to DT field in the above-mentioned table 1.
As shown in Figure 5, the flow process of data pack transmission method is as follows under the HSDPA scene:
1, owing to eating dishes without rice or wine quality, the data that the terminal discovery is received send loses, and terminal sends the state bag of this obliterated data re-transmission of request to RNC;
2, after RNC receives the RLC retransmission data packet may of terminal request, as shown in Figure 2, extend this as 1 for the PRI field before the Mac-d PDU of this retransmission data packet may in being handed down to the HS-DSCH DATA TYPE 1 of base station, DT is 1, with this preferential packet that sends in bag sign position;
If also there is the RLC state data packets in down direction, and this state data packets is not RLC reset mode bag or RLC movably receiving window state bag, PRI and the DT field before the Mac-d PDU of RLC state data packets correspondence in same HS-DSCH DATA TYPE 1 frame that is handed down to Nodeb then, the PRI field extends this as 1, DT is 0, and then RNC will wrap the preferential state bag that sends in sign position;
If this moment, also there was the RLC packet of other types in down direction, the PRI field before the Mac-d PDU that this RLC packet is answered in being handed down to same HS-DSCH DATA TYPE 1 frame of Nodeb then, the PRI field extends this as 0;
3, after these HS-DSCH DATA TYPE 1 frame data are received in the base station, differentiate priority of data packets, send data to terminal according to this priority according to PRI and DT field;
4, after terminal is received the RLC state data packets, upgrade its send window, accelerate up send window and slide, after terminal is received the RLC retransmission data packet may, send the state bag of confirming, thereby accelerate the slip of descending send window to RNC.
Basic identical under the flow process of the data pack transmission method under the HSPA+ scene and the HSDPA scene, just different under its HS-DSCH frame structure and the HSDPA scene.As shown in Figure 3, after RNC received the RLC retransmission data packet may of terminal request, in being handed down to HS-DSCH DATA TYPE 2 frame heads of base station, the PRI field extended this as 1, and DT is 1, this bag is designated the packet of preferential transmission; If what down direction sent is the RLC state data packets, and this state data packets is not RLC reset mode bag or RLC movably receiving window state bag, then RNC is in being handed down to HS-DSCH DATA TYPE 2 frame heads of base station, the PRI field extends this as 1, DT is 0, and then RNC is designated this bag the state bag of preferential transmission; If what down direction sent is the RLC packet of other types, then RNC is in being handed down to HS-DSCH DATA TYPE 2 frame heads of base station, and the PRI field extends this as 0, and then RNC is designated this bag the RLC packet that does not preferentially send.
The data pack transmission method of present embodiment, by transmission according to packet Characteristics Control packet, the preferential high packet of priority that sends, mainly be preferentially to send RLC retransmission data packet may and RLC state data packets, can impel terminal to receive downlink data sooner, thereby accelerate the speed of terminal, the further renewal of accelerating network side RLC down direction window to the RLC state of network side response.Present embodiment quickens the RLC up direction in 3G (Third Generation) Moblie HSDPA or HSPA+ system and the down direction sliding window slides, and speeding up data transmission speed improves data throughout, has also improved the Experience Degree of user to business.
Device embodiment
As shown in Figure 4, base station embodiment of the present invention comprises:
Parsing module 32 is used for analysing the packet characteristic sign that receives the RNC transmission according to default mapping relations tabulation, obtains the packet characteristic;
Transport module 34 is used for according to packet characteristic transmits data packets.
Wherein, data characteristic comprises type and its transmission priority of packet.Type of data packet mainly comprises: RLC New Development packet, RLC retransmission data packet may and RLC state data packets.The priority of setting RLC retransmission data packet may and RLC state data packets is higher than RLC New Development priority of data packets.Preferably, the priority that can also further set the RLC state data packets is higher than the priority of RLC retransmission data packet may.Transmission control module 34 determines whether needs prioritised transmission corresponding data bag according to the transmission priority of each packet.
In the present embodiment, by according to packet characteristic transmits data packets, the preferential high packet of priority that sends, mainly be preferentially to send RLC retransmission data packet may and RLC state data packets, can impel terminal to receive downlink data sooner, thereby accelerate the speed of terminal, the further renewal of accelerating network side RLC down direction window to the RLC state of network side response.Present embodiment quickens the RLC up direction in 3G (Third Generation) Moblie HSDPA or HSPA+ system and the down direction sliding window slides, and speeding up data transmission speed improves data throughout, has also improved the Experience Degree of user to business.
System embodiment
As shown in Figure 5, data packet transmission system implementation of the present invention comprises:
RNC20 is used for identifying for each packet generates corresponding data bag characteristic according to the characteristic of packet, is sent to the base station;
The quality owing to eat dishes without rice or wine, the data that terminal 40 discoveries are received send loses, and terminal 40 sends the state bag that this obliterated data of request retransmits to RNC20.After RNC20 receives the RLC retransmission data packet may of terminal request, in the HS-DSCH frame, add packet characteristic sign, and the HS-DSCH frame that will carry packet characteristic sign is sent to base station 30, and the structure of HS-DSCH frame describes in detail in said method embodiment, does not repeat them here.
The packet characteristic sign in the HS-DSCH frame is resolved in base station 30, obtains the packet characteristic.Wherein, the packet characteristic comprises: the type of packet and its transmission priority.Type of data packet mainly comprises: RLC New Development packet, RLC retransmission data packet may and RLC state data packets.Wherein, the priority of RLC retransmission data packet may and RLC state data packets is higher than RLC New Development priority of data packets.Preferably, the priority that can also further set the RLC state data packets is higher than the priority of RLC retransmission data packet may.Base station 30 preferentially sends RLC state data packets and RLC retransmission data packet may according to the transmission sequence of this transmission priority control corresponding data bag.
After terminal 40 is received the RLC state data packets, upgrade its send window, accelerate up send window and slide; After terminal is received the RLC retransmission data packet may, then send the state bag of confirming, thereby accelerate the slip of descending send window to RNC.
In the present embodiment, by according to packet characteristic transmits data packets, the preferential high packet of priority that sends, mainly be preferentially to send RLC retransmission data packet may and RLC state data packets, can impel terminal to receive downlink data sooner, thereby accelerate the speed of terminal, the further renewal of accelerating network side RLC down direction window to the RLC state of network side response.Present embodiment quickens the RLC up direction in 3G (Third Generation) Moblie HSDPA or HSPA+ system and the down direction sliding window slides, and speeding up data transmission speed improves data throughout, has also improved the Experience Degree of user to business.
It should be noted that: above embodiment is only unrestricted in order to explanation the present invention, and the present invention also is not limited in above-mentioned giving an example, and all do not break away from the technical scheme and the improvement thereof of the spirit and scope of the present invention, and it all should be encompassed in the claim scope of the present invention.
Claims (10)
1. a data pack transmission method is characterized in that, comprising:
The packet characteristic sign that A, reception network side send is separated out the packet characteristic according to default mapping relations tabulation;
B, transmit described packet according to described packet characteristic.
2. data pack transmission method according to claim 1 is characterized in that, described packet characteristic comprises: type of data packet and transmission priority; Described step B specifically comprises:
According to the transmission priority of each type of data packet correspondence, according to the described packet of corresponding priority level sequential delivery.
3. data pack transmission method according to claim 2 is characterized in that, described type of data packet comprises: RLC New Development packet, RLC retransmission data packet may and RLC state data packets; The priority of described RLC retransmission data packet may and RLC state data packets is higher than described RLC New Development priority of data packets;
Among the described step B, described RLC retransmission data packet may of prioritised transmission and described RLC state data packets.
4. data pack transmission method according to claim 3 is characterized in that, in described step B, and for described RLC retransmission data packet may and RLC state data packets, the further described RLC state data packets of prioritised transmission.
5. data pack transmission method according to claim 1 is characterized in that, described steps A specifically comprises:
Receive described HS-DSCH frame, from the HS-DSCH frame, read described packet characteristic sign;
From described packet characteristic sign, parse the packet characteristic according to default mapping relations table.
6. a base station is characterized in that, comprising:
Parsing module is used for analysing the packet characteristic sign that receives the network side transmission according to default mapping relations tabulation, obtains the packet characteristic;
Transport module is used for transmitting described packet according to described packet characteristic.
7. base station according to claim 6 is characterized in that, described packet characteristic sign comprises the field of representing type of data packet and transmission priority respectively;
Described transport module is used for transmitting corresponding packet according to transmission priority.
8. base station according to claim 7 is characterized in that, described type of data packet comprises RLC New Development packet, RLC retransmission data packet may and RLC state data packets; The priority of described RLC retransmission data packet may and RLC state data packets is higher than described RLC New Development priority of data packets.
9. a data packet transmission system is characterized in that, comprising:
RNC is used for identifying for each packet generates corresponding data bag characteristic according to the characteristic of packet, is sent to the base station;
The base station is used for analysing the packet characteristic sign that receives the network side transmission according to default mapping relations tabulation, obtains the packet characteristic, and transmits described packet according to described packet characteristic.
10. data packet transmission according to claim 10 system is characterized in that,
Described RNC also is used for adding described packet characteristic sign at the HS-DSCH frame, and the HS-DSCH frame that will carry described packet characteristic sign is sent to described base station;
Described base station also is used to receive described HS-DSCH frame, and reads the packet characteristic sign in the HS-DSCH frame.
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| CN106388842A (en) * | 2016-10-10 | 2017-02-15 | 西安集智医疗器械科技有限公司 | C-shaped arm X-ray machine high-speed wireless data transmission method and system |
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| WO2014043883A1 (en) * | 2012-09-20 | 2014-03-27 | 华为技术有限公司 | Data transmission method and device |
| CN104519093B (en) * | 2013-09-29 | 2018-07-27 | 普天信息技术研究院有限公司 | A kind of dispatching method based on two-way link transmission |
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| CN106388842A (en) * | 2016-10-10 | 2017-02-15 | 西安集智医疗器械科技有限公司 | C-shaped arm X-ray machine high-speed wireless data transmission method and system |
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| WO2019062498A1 (en) * | 2017-09-30 | 2019-04-04 | 华为技术有限公司 | Method and device for acquiring feature parameters |
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| CN108667567A (en) * | 2018-04-26 | 2018-10-16 | 北京空间飞行器总体设计部 | A kind of spacecraft low overhead transmitting retransmission algorithm |
| CN108667567B (en) * | 2018-04-26 | 2020-10-23 | 北京空间飞行器总体设计部 | Low-overhead reliable transmission retransmission algorithm for spacecraft |
| CN109831282A (en) * | 2019-01-31 | 2019-05-31 | 郑州云海信息技术有限公司 | Data packet retransmission, retransmission method, system, device and readable storage medium storing program for executing |
| CN109831282B (en) * | 2019-01-31 | 2022-03-08 | 郑州云海信息技术有限公司 | Data packet retransmission method, data packet retransmission system, data packet retransmission device and readable storage medium |
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