CN106341368A - Data processing method and device - Google Patents

Data processing method and device Download PDF

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Publication number
CN106341368A
CN106341368A CN201510392479.2A CN201510392479A CN106341368A CN 106341368 A CN106341368 A CN 106341368A CN 201510392479 A CN201510392479 A CN 201510392479A CN 106341368 A CN106341368 A CN 106341368A
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CN
China
Prior art keywords
pdu
window
time
reordering
reorders
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
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CN201510392479.2A
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Chinese (zh)
Inventor
王达菲
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ZTE Corp
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ZTE Corp
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Publication date
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Priority to CN201510392479.2A priority Critical patent/CN106341368A/en
Priority to PCT/CN2016/070259 priority patent/WO2016131345A1/en
Publication of CN106341368A publication Critical patent/CN106341368A/en
Withdrawn legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
    • H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
    • H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H04L1/001—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding applied to control information

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Communication Control (AREA)

Abstract

The invention discloses a data processing method and device. The data processing method comprises the step of carrying time information in each protocol data unit (PDU) firstly transmitted to radio link control (RLC). The data processing method further comprises the steps of judging whether the first transmission time of the last received PDU in a re-ranking window is later than the first transmission time of a PDU falling outside the re-ranking window or not according to the carried time information; and discarding the PDU falling outside the re-ranking window if the first transmission time of the last received PDU in the re-ranking window is later than the first transmission time of the PDU falling outside the re-ranking window. According to the data processing method, discarding processing is carried out on the PDU which is earlier than the first transmission time of the last PDU in the re-ranking window and falls outside the re-ranking window through the time information, correct ranking of UE for the PDUs is ensured, successful decryption for messages is realized, and service interruption caused by not discarding the PDU which is earlier than the first transmission time of the last PDU in the re-ranking window and falls outside the re-ranking window is avoided.

Description

A kind of method and device realizing data processing
Technical field
The present invention relates to mobile communication technology, espespecially a kind of method and device realizing data processing.
Background technology
Fig. 1 is the Long Term Evolution user face protocol stack schematic diagram of prior art, as shown in figure 1, evolution land Ground wireless access network node b (enb, e-urtan node b) and user equipment (ue, user Equipment in protocol stack), contain from high level to lower layers packet: PDCP pdcp (packet Data convergence protocol) layer, wireless spread-spectrum technology rlc (radio link control) layer, Multimedia transmission controls (mac, medium access control) layer, physical layer phy (physical layer).Transmitting terminal needs to transmit business datum when reaching receiving terminal, and transmitting terminal is by the business receiving number Process according to through the pdcp layer of enb, rlc layer, mac layer, finally reach the phy of transmitting terminal Layer, transmitting terminal sends traffic to the phy layer of receiving terminal, Jing Guojie by the physical path of phy layer The mac layer of receiving end, rlc layer, the process of pdcp layer, to the high level delivery of receiving terminal.Wherein, Transmitting terminal and receiving terminal can be respectively enb and ue it is also possible to respectively ue and enb.
The schematic diagram of the data block that Fig. 2 transmits for mac, as shown in Fig. 2 transmission block (tb, transfer Block mac stem and mac service data unit (sdu, service data unit) are contained in), Contain rlc stem and rlc sdu in mac sdu, in rlc sdu, contain pdcp stem With pdcp sdu.Fig. 3 is prior art rlc and pdcp stem structural representation, as shown in figure 3, By analysis, in rlc stem, only comprise rlc serial number (sn, sequence number).With enb As a example the unacknowledged mode (um, unacknowledged mode) of side, the mac layer of enb should Receive data tb1, tb2 from phy ..., tbn, but because tb1 loses in wireless transmissions Lose, mac first have received tb2 ..., tbn, have received the tb1 of re-transmission after having spent a period of time, Here the rlc comprising in tb1 sn is designated as r_sn1, the pdcp sn comprising is designated as p_sn1, The rlc comprising in tbn sn is designated as r_snn, the pdcp sn comprising is designated as p_snn, with rlc As a example sn length is configured to 5bit, then the window that reorders of rlc now is [r_snn–16, r_snn], if the r_sn receiving1Fall and reordering outside window, at this moment can update the upper of the window that reorders Edge is r_sn1, protocol Data Unit (pdu, the protocol data that subsequently comprises in this rlc sdu Unit) it is delivered to pdcp.According to prior art, the p_sn1 comprising in pdu receives than expectation If p_snn is little, can be considered as the message of next round, need to pdcp Hyper Frame Number (hfn, hyper Frame number) Jia 1, and message is decrypted with this.But when ue side joint receives this pdu, The window that reorders of its ownership has been delivered user's message deciphering, that is, cannot be carried out adding of pdcp hfn 1 process, does not carry out Jia 1 processing and causes follow-up pdu to sort mistake all, follow-up message is deciphered Will fail, lead to data traffic interruptions.
Content of the invention
In order to solve above-mentioned technical problem, the present invention provides a kind of method and device realizing data processing, Can to fall fall within the pdu reordering outside window correctly processed it is ensured that ue to pdu just Really sort.
In order to reach the object of the invention, the invention provides a kind of method realizing data processing, first It is sent in each protocol Data Unit pdu of wireless spread-spectrum technology rlc and carry temporal information, bag Include:
When the pdu that rlc receives falls when reordering outside window, judged according to the temporal information carrying In the window that reorders receiving, whether the time sending first of last pdu is later than and is reordering The time sending first of the pdu outside window；
In the window that reorders receiving, the time sending first of last pdu is later than and is reordering Pdu outside window send first time when, abandon this and fall in the pdu outside window that reorders.
Further, carry temporal information to include: add the air interface transmission time in described pdu；
The described air interface transmission time is: the multimedia transmission control of evolution land radio access web node b enb Physical layer phy of preparative layer mac instruction user equipment ue sends the time of transmission block tb first.
Further, the interpolation air interface transmission time includes: is eating dishes without rice or wine described in the interface encapsulation of described pdu to pass The defeated time.
Further, the air interface transmission time is the time sequence information comprising frame number and subframe numbers obtaining from system.
Further, the pdu that rlc receives falls and is reordering outside window, the window that reorders of reception The time sending first of last pdu interior is early than the sending out first in the pdu outside window that reorders that fall During the time sent, the method also includes: the described pdu reordering outside window is added to new reordering The upper edge of window.
On the other hand, the application also provides a kind of device realizing data processing, including adding device, sentences Disconnected unit and processing unit；Wherein,
Adding device, for being sent to each protocol Data Unit of wireless spread-spectrum technology rlc first Temporal information is carried in pdu；
Judging unit, for falling when reordering outside window as the pdu that rlc receives, according to carrying Temporal information time sending first of last pdu in window of reordering of judging to receive whether It is later than in the time sending first reordering the pdu outside window；
For judging unit, processing unit, determines that in the window that reorders receiving, last pdu is first Send time be later than the pdu outside window that reorders send first time when, abandon this and fall The pdu reordering outside window.
Further, described adding device, for being sent to each of wireless spread-spectrum technology rlc first The air interface transmission time described in interface encapsulation of individual protocol Data Unit pdu, to carry temporal information；
The described air interface transmission time is: the mac of enb indicate the phy of ue send first tb when Between.
Further, the described air interface transmission time is the sequential comprising frame number and subframe numbers obtaining from system Information.
Further, described processing unit is additionally operable to, and judging unit determines in the window that reorders receiving The time sending first of a pdu is early than the sending first in the pdu outside window that reorders that fall afterwards During the time, the described pdu reordering outside window is added to the upper edge of the new window that reorders.
Compared with prior art, technical scheme includes: is sent to wireless spread-spectrum technology first (rlc) carry temporal information in each protocol Data Unit (pdu), also include: according to taking The temporal information of band judges that the time sending first of last pdu in the window that reorders receiving is No it is later than in the time sending first reordering the pdu outside window；In the window that reorders receiving The time sending first of a pdu is later than sending first in the pdu outside window that reorders afterwards During the time, abandon this and fall in the pdu outside window that reorders.The inventive method passes through temporal information will be early than That reorders time sending first of last pdu in window falls within the pdu reordering outside window Carry out discard processing it is ensured that ue is correctly ordered to pdu, realize the successful decryption to message, keep away Exempt from not abandoning the service disconnection that this part pdu causes.
Brief description
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes of the application Point, the schematic description and description of the present invention is used for explaining the present invention, does not constitute to the present invention's Improper restriction.In the accompanying drawings:
Fig. 1 is the Long Term Evolution user face protocol stack schematic diagram of prior art；
The schematic diagram of the data block that Fig. 2 transmits for mac；
Fig. 3 is prior art rlc and pdcp stem structural representation；
The flow chart that Fig. 4 realizes the method for data processing for the present invention；
Fig. 5 is the structure journey figure of the device of data processing of the present invention；
Fig. 6 is the method flow diagram of first embodiment of the invention.
Specific embodiment
For making the object, technical solutions and advantages of the present invention become more apparent, below in conjunction with accompanying drawing Embodiments of the invention are described in detail.It should be noted that in the case of not conflicting, this Shen Please in embodiment and the feature in embodiment can mutual combination in any.
The flow chart that Fig. 4 realizes the method for data processing for the present invention, as shown in Figure 4, comprising:
Step 400, it is being sent to each protocol Data Unit of wireless spread-spectrum technology (rlc) first (pdu) carry temporal information in；
It should be noted that the pdu being sent to rlc refers to receive sending after the tb of ue Pdu.
In this step, carry temporal information and include: add the air interface transmission time in described pdu；Wherein, The air interface transmission time is: the mac of enb indicates that the phy of ue sends the time of tb first.
Preferably, the interpolation air interface transmission time includes: in the interface encapsulation air interface transmission time of pdu.
The air interface transmission time is the time sequence information comprising frame number and subframe numbers obtaining from system.
Step 401, fall when reordering outside window as the pdu that rlc receives, according to carry when Between information judge whether the time sending first of last pdu in window of reordering receiving is later than Fall in the time sending first reordering the pdu outside window；
In step 402, the window that reorders receiving, the time sending first of last pdu is later than The pdu outside window that reorders send first time when, abandon this and fall to reordering outside window pdu.
The pdu that rlc receives falls to reordering outside window, in the window that reorders of reception last The time sending first of pdu early than fall the pdu outside window that reorders send first time when, The inventive method also includes: the described pdu reordering outside window is added to the upper of the new window that reorders Edge.
The inventive method passes through temporal information by early than the sending out first of last pdu in the window that reorders The pdu reordering outside window that falls within of the time sent carries out discard processing it is ensured that ue is to pdu's It is correctly ordered, realizes successful decryption to message, it is to avoid do not abandon in the business that this part pdu causes Disconnected.
Fig. 5 is the structure journey figure of the device of data processing of the present invention, comprising: adding device, judging unit And processing unit；Wherein,
Adding device, for being sent to each protocol Data Unit of wireless spread-spectrum technology rlc first Temporal information is carried in pdu；
Adding device is specifically for being sent to each protocol data of wireless spread-spectrum technology rlc first The air interface transmission time described in the interface encapsulation of unit pdu, to carry temporal information；
Wherein, the air interface transmission time be: the mac of enb indicates that the phy of ue sends tb's first Time.
The air interface transmission time is the time sequence information comprising frame number and subframe numbers obtaining from system.
Judging unit, for falling when reordering outside window as the pdu that rlc receives, according to carrying Temporal information time sending first of last pdu in window of reordering of judging to receive whether It is later than in the time sending first reordering the pdu outside window；
For judging unit, processing unit, determines that in the window that reorders receiving, last pdu is first Send time be later than the pdu outside window that reorders send first time when, abandon this and fall The pdu reordering outside window.
Processing unit is additionally operable to, and judging unit determines the head of last pdu in the window that reorders receiving The time of secondary transmission early than fall the pdu outside window that reorders send first time when, will be described heavy Pdu outside re-ordering window is added to the upper edge of the new window that reorders.
Below by way of specific embodiment, clear detailed description is carried out to the inventive method, embodiment is only used for The statement present invention, is not limited to the protection domain of the inventive method.
Embodiment 1
The unit of apparatus of the present invention is built in enb the present embodiment, and Fig. 6 is that the present invention first is real Apply the method flow diagram of example, as shown in Figure 6, comprising:
Step 600, the mac of enb receive the tb from ue；
Step 601, mac carry the air interface transmission time when sending pdu to rlc；
In this step, the air interface transmission time is: the mac of enb indicates that the phy of ue sends first The time of tb；
It should be noted that whether transmission is identified by re-transmission or relevant information may determine that acquisition first.
When step 602, rlc receive the pdu outside the window that reorders, during according to air interface transmission Between judge whether this pdu is later than the air interface transmission time of last pdu in window of reordering；
The air interface transmission time of the pdu reordering outside window early than in the window that reorders last During the air interface transmission time of pdu, execution step 603；The air interface transmission time pdu reordering outside window Be later than when reordering the air interface transmission time of last pdu in window, execution step 604, rlc The window that reorders is updated according to prior art.
Step 603, rlc abandon this pdu.
The pdu that step 604, rlc reorder this outside window, is added to the upper of the new window that reorders Edge.
Although disclosed herein embodiment as above, described content only readily appreciates the present invention And the embodiment adopting, it is not limited to the present invention.Technology people in any art of the present invention Member, without departing from disclosed herein spirit and scope on the premise of, can be in the form implemented and thin Any modification and change are carried out on section, but the scope of patent protection of the present invention, still must be with appended right The scope that claim is defined is defined.

Claims (9)

1. a kind of method realizing data processing it is characterised in that be sent to wireless spread-spectrum technology first Temporal information is carried in each protocol Data Unit pdu of rlc, comprising:
When the pdu that rlc receives falls when reordering outside window, judged according to the temporal information carrying In the window that reorders receiving, whether the time sending first of last pdu is later than and is reordering The time sending first of the pdu outside window；
In the window that reorders receiving, the time sending first of last pdu is later than and is reordering Pdu outside window send first time when, abandon this and fall in the pdu outside window that reorders.
2. method according to claim 1 is it is characterised in that the described temporal information that carries includes: Described pdu adds the air interface transmission time；
The described air interface transmission time is: the multimedia transmission control of evolution land radio access web node b enb Physical layer phy of preparative layer mac instruction user equipment ue sends the time of transmission block tb first.
3. method according to claim 2 it is characterised in that the described interpolation air interface transmission time bag Include: in the air interface transmission time described in the interface encapsulation of described pdu.
4. method according to claim 3 is it is characterised in that the described air interface transmission time is from being The time sequence information comprising frame number and subframe numbers that system obtains.
5. method according to claim 1 and 2 is it is characterised in that what described rlc received Pdu falls to reordering outside window, and last pdu's sends first in the window that reorders of reception Time early than fall the pdu outside window that reorders send first time when, the method also includes: will The described pdu reordering outside window is added to the upper edge of the new window that reorders.
6. a kind of device realizing data processing it is characterised in that include adding device, judging unit and Processing unit；Wherein,
Adding device, for being sent to each protocol Data Unit of wireless spread-spectrum technology rlc first Temporal information is carried in pdu；
Judging unit, for falling when reordering outside window as the pdu that rlc receives, according to carrying Temporal information time sending first of last pdu in window of reordering of judging to receive whether It is later than in the time sending first reordering the pdu outside window；
For judging unit, processing unit, determines that in the window that reorders receiving, last pdu is first Send time be later than the pdu outside window that reorders send first time when, abandon this and fall The pdu reordering outside window.
7. device according to claim 6 is it is characterised in that described adding device, in head The secondary sky described in the interface encapsulation of each protocol Data Unit pdu being sent to wireless spread-spectrum technology rlc The port transmission time, to carry temporal information；
The described air interface transmission time is: the mac of enb indicate the phy of ue send first tb when Between.
8. device according to claim 7 is it is characterised in that the described air interface transmission time is from being The time sequence information comprising frame number and subframe numbers that system obtains.
9. the device according to claim 6 or 7 is it is characterised in that described processing unit is additionally operable to, Judging unit determines time sending first of last pdu in window of reordering receiving early than falling The pdu outside window that reorders send first time when, by the described pdu reordering outside window It is added to the upper edge of the new window that reorders.
CN201510392479.2A 2015-07-06 2015-07-06 Data processing method and device Withdrawn CN106341368A (en)

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PCT/CN2016/070259 WO2016131345A1 (en) 2015-07-06 2016-01-06 Data processing method and device

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Application publication date: 20170118