CN107770231A - Distributed data transport method and device based on UM rlc protocols, UM RLC entities - Google Patents
Distributed data transport method and device based on UM rlc protocols, UM RLC entities Download PDFInfo
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- CN107770231A CN107770231A CN201610704706.5A CN201610704706A CN107770231A CN 107770231 A CN107770231 A CN 107770231A CN 201610704706 A CN201610704706 A CN 201610704706A CN 107770231 A CN107770231 A CN 107770231A
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- rlc
- sdu
- rlc sdu
- cluster
- radio link
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- 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
- H04L69/324—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the data link layer [OSI layer 2], e.g. HDLC
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
- H04W80/02—Data link layer protocols
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The embodiment of the invention discloses a kind of distributed data transport method and device based on Unacknowledged Mode wireless spread-spectrum technology UM rlc protocols, UM RLC entities, set that Central Transmission caches and central service data cell SDU reorders unit in UM RLC entities；Methods described includes：After Central Transmission caching receives UM RLC service data units SDU, the UM RLC SDU are sent in the form of UM RLC SDU cluster to corresponding branch Radio Link.The technical scheme of the embodiment of the present invention can compatible existing UM rlc protocol stack functions, can the time delay brought of compatible discontinuous transmission, there is good autgmentability, can quickly support mass users.
Description
Technical field
The present invention relates to wireless data Distributed Transmission technology, more particularly to a kind of distributed data based on UM rlc protocols
Transmission method and device, UM RLC entities.
Background technology
Unacknowledged Mode wireless spread-spectrum technology in radio link layer control (RLC, Radio Link Control) agreement
(UM RLC, Unacknowledged Mode Radio Link Control) protocol entity as a complete entity, enters
The processing of row data pack receiving and transmitting.The 5G network architectures propose the distributed structure/architecture of access network, and air protocol stack is separately operable not
In same distributed entities, and non-ideal transmission is transmitted as between distributed entities.With RCC-RRS (RCC：Radio Cloud
Center, RRS：Remote Radio System) exemplified by distributed structure/architecture, non-ideal transmission is transmitted as between RCC-RRS,
So need to consider the segmentation reconstruct under non-ideal transmission to protocol stack function.
And it is currently in PDCP (PDCP, Packet Data Convergence Protocol)/RLC
Between split reconstruct, increase PDCP protocol element (PDCP PDU, Packet Data in PDCP functions
Convergence Protocol Protocol Data Unit) reordering function, RLC function keeps constant.This side
Problems be present in case：1st, need in PDCP agreements increase to the ranking function of packet, this mode obscured RLC and
PDCP function division, destroys the protocol stack function division principle that only RLC is responsible for data packet sequencing；2nd, need to assist in PDCP
Increase a whole set of in view and completely sequentially send and receive the mechanism of reordering, PDCP protocol stacks are changed very big；3rd, assist at present
PDCP need not be handled the data of Unacknowledged Mode (UM, Transparent Mode) in view, if PDCP is supported
After the ranking function of packet, in order to protocol function completeness, it is necessary to increase the processing to UM patterns.4th, PDCP passes through PDCP
When PDU sequence number (SN, Serial Number) is ranked up, to receive the PDCP PDU that multiple RLC are sent and be only possible to arrange
Sequence, cause complexity big, extend during sequence.When the 5th, re-establishing (reestablishment), because data between RLC and PDCP
It is oversize by the time of non-ideal transmission with control information, cause to re-establish process adding new time delay.
The content of the invention
In order to solve the above technical problems, the embodiment of the present invention it is expected to provide a kind of distributed data based on UM rlc protocols
Transmission method and device, UM RLC entities, do not make any change to PDCP functions, increase UM RLC service data unit
The ranking function of (SDU, Service Data Unit) conflict (cluster), current UM is still continued to use in SUD cluster
RLC ranking functions, it ensure that the completely compatible property to current UM rlc protocols function.
The technical proposal of the invention is realized in this way：
A kind of distributed number based on Unacknowledged Mode wireless spread-spectrum technology UM rlc protocols provided in an embodiment of the present invention
According to transmission method, Central Transmission buffer unit is set in UM RLC entities and central service data cell SDU reorders unit；
Methods described includes：
After the Central Transmission buffer unit receives UM RLC service data units SDU, by the UM RLC SDU with UM
The form of RLC SDU bursts is sent to corresponding branch Radio Link；
The central SDU reorder unit receive branch Radio Link transmission UM RLC SDU cluster after, to every
UM RLC SDU cluster on individual branch Radio Link are ranked up, in order by the UM RLC SDU cluster after sequence
In UM RLC SDU to high level send.
In the embodiment of the present invention, all UM RLC SDU in the UM RLC SDU cluster are complete UM
RLC SDU。
In the embodiment of the present invention, the UM RLC SDU included in the UM RLC SDU cluster data volume can meet
The time that branch Radio Link is persistently sent is not less than preset duration.
In the embodiment of the present invention, the Central Transmission buffer unit happens suddenly the UM RLC SDU with UM RLC SDU
Form is sent in the way of fifo fifo to corresponding branch Radio Link.
In the embodiment of the present invention, methods described also includes：
The central SDU reorders unit by the UM RLC SDU in the UM RLC SDU cluster in branch Radio Link
Send in fifo fashion.
A kind of distributed data transport device based on UM rlc protocols provided in an embodiment of the present invention, described device bag
Include：
Central Transmission buffer unit, for receiving UM RLC service data unit SDU, and by the UM RLC SDU with UM
The form of RLC SDU bursts is sent to corresponding branch Radio Link；
Central SDU reorders unit, after the UM RLC SDU cluster for receiving the transmission of branch Radio Link, to every
UM RLC SDU cluster on individual branch Radio Link are ranked up, in order by the UM RLC SDU cluster after sequence
In UM RLC SDU to high level send.
In the embodiment of the present invention, all UM RLC SDU in the UM RLC SDU cluster are complete UM
RLC SDU。
In the embodiment of the present invention, the UM RLC SDU included in the UM RLC SDU cluster data volume can meet
The time that branch Radio Link is persistently sent is not less than preset duration.
In the embodiment of the present invention, the Central Transmission buffer unit, it is additionally operable to the UM RLC SDU with UM RLC
The form of SDU bursts is sent in the way of fifo fifo to corresponding branch Radio Link.
In the embodiment of the present invention, the central SDU reorders unit, is additionally operable to the UM RLC SDU in branch Radio Link
UM RLC SDU in cluster are sent in fifo fashion.
The embodiment of the present invention additionally provides a kind of UM RLC entities, including the foregoing distributed number based on UM rlc protocols
According to transmitting device.
The technical scheme of the embodiment of the present invention, by setting Central Transmission buffer unit and center in UM RLC entities
SDU reorders unit；After the Central Transmission buffer unit receives UM RLC service data units SDU, by the UM RLC
SDU is sent in the form of UM RLC SDU happen suddenly (cluster) to corresponding branch Radio Link.Wherein, UM RLC SDU
When the UM RLC SDU included in cluster data volume can meet that the time that branch Radio Link is persistently sent is not less than default
It is long.The technical scheme of the embodiment of the present invention can compatible existing UM rlc protocol stack functions, can compatible discontinuous transmission bring
Time delay, there is good autgmentability, can quickly support mass users.
Brief description of the drawings
Fig. 1 is the schematic diagram of the UM RLC solid data transport protocol stack frameworks of the embodiment of the present invention；
Fig. 2 is the schematic flow sheet of the distributed data transport method based on UM rlc protocols of the embodiment of the present invention；
Fig. 3 is the composition structural representation of distributed data transport device of the embodiment of the present invention based on UM rlc protocols.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes.
Split the problem of reconstruct is present for the distributed structure/architecture of 5G access networks, and current PDCP/RLC.This hair
Bright embodiment provides a kind of distributed UM rlc protocols data transmission method in mobile radio network, and this method is not to PDCP
Function makes any change, increase UM RLC SDU cluster ranking function, is still continued to use at present in SUD cluster
UM RLC ranking functions, ensure that the completely compatible property to current UM rlc protocols function.
Fig. 1 is the schematic diagram of the UM RLC solid data transport protocol stack frameworks of the embodiment of the present invention, as shown in figure 1, UM
RLC Entity add Centralized Transmissionbuffer and Centralized SDU reassembly work(
Can, other existing function treatments do not change.Each UM RLC Enity can possess multiple links simultaneously
(Branches of RL)。
The Centralized Transmission buffer functions of the embodiment of the present invention include：Centralized
Transmission buffer functions are：After receiving the UM RLC SDU that PDCP is sent, the UE provided according to MAC is each
The handling capacity eated dishes without rice or wine on CC, several complete UM RLC SDU are sent to correspondingly with UM RLC SDU cluster line
In Transmission buffer on branch Radio Link.Centralized Transmission buffer are not to any one
Individual UM RLC SDU carry out any segment processing, and all UM RLC SDU in UM RLC SDU cluster are complete UM
RLC SDU.The UM RLC SDU that each UM RLC SDU cluster are included can meet in the branch Radio Link long period
The transmission demand of (5ms/10ms, or even longer time etc.), so as to reduce the delay requirement transmitted between RCC-RRS.
That is the UM RLC SDU included in UM RLC SDU cluster data volume can meet what branch Radio Link was persistently sent
Time is not less than preset duration.The preset duration is foregoing 5ms, 10ms, 20ms or 50ms etc..
In the embodiment of the present invention, Centralized SDU reassembly functions：Complete to send out on each branch Radio Link
After the UM RLC SDU cluster sent up, the UM RLC SDU cluster on each Radio Link are ranked up,
Then sent in order to PDCP.
In the embodiment of the present invention, the UM RLC concrete functions on each branch Radio Link still continue to use current UM rlc protocols
The function of entity, difference be, during transmission, the UM RLC received for the UM RLC on branch Radio Link on total link are sent
The UM RLC SDU cluster come, different UM RLC SDU cluster are according to first in first out (FIFO, First Input
First Output) mode send, the UM RLC SDU in each UM RLC SDU cluster are also in the way of FIFO
Send.During reception, the UM RLC SDU that branch Radio Link is sent are sent to high level.
Fig. 2 is the schematic flow sheet of the distributed data transport method based on UM rlc protocols of the embodiment of the present invention, such as
Shown in Fig. 2, the distributed data transport method based on UM rlc protocols of the embodiment of the present invention comprises the following steps：
Step 201：After Central Transmission buffer unit receives UM RLC service data units SDU, by the UM RLC SDU
Sent in the form of UM RLC SDU cluster to corresponding branch Radio Link.
In the embodiment of the present invention, Central Transmission buffer unit is arranged in UM RLC entities.
All UM RLC SDU in the UM RLC SDU cluster are complete UM RLC SDU.State UM RLC
It is default that the UM RLC SDU included in SDU cluster data volume can meet that the time that branch Radio Link is persistently sent is not less than
Duration.
Specifically, Central Transmission buffer unit presses the UM RLC SDU first in the form of UM RLC SDU cluster
The mode for entering first to go out FIFO is sent to corresponding branch Radio Link.
Branch Radio Link sends the UM RLC SDU in UM RLC SDU cluster in fifo fashion.
Step 202：Central SDU reorder unit receive branch Radio Link transmission UM RLC SDU cluster after,
UM RLC SDU cluster on each Radio Link are ranked up, in order by the UM RLC SDU after sequence
UM RLC SDU in cluster are sent to high level.
In the embodiment of the present invention, central SDU is additionally provided with UM RLC entities and is reordered (Centralized SDU
Reassembly) unit.
In the embodiment of the present invention, high level refers to PDCP protocol layers.
Fig. 3 is the composition structural representation of distributed data transport device of the embodiment of the present invention based on UM rlc protocols,
As shown in figure 3, distributed data transport device of the embodiment of the present invention based on UM rlc protocols includes：
Central Transmission buffer unit 30, for receiving UM RLC service data unit SDU, and by the UM RLC SDU with
UM RLC SDU cluster form is sent to corresponding branch Radio Link；
Central SDU reorders unit 31, right after the UM RLC SDU cluster for receiving the transmission of branch Radio Link
UM RLC SDU cluster on each branch Radio Link are ranked up, in order by the UM RLC SDU after sequence
UM RLC SDU in cluster are sent to high level.
In the embodiment of the present invention, all UM RLC SDU in the UM RLC SDU cluster are complete UM
RLC SDU。
In the embodiment of the present invention, the UM RLC SDU included in the UM RLC SDU cluster data volume can meet
The time that branch Radio Link is persistently sent is not less than preset duration.
In the embodiment of the present invention, the Central Transmission buffer unit 30, it is additionally operable to the UM RLC SDU with UM RLC
SDU cluster form is sent in the way of fifo fifo to corresponding branch Radio Link.
In the embodiment of the present invention, high level refers to PDCP protocol layers.
The embodiment of the present invention also describes a kind of UM RLC entities, including shown in earlier figures 3 based on UM rlc protocols
Distributed data transport device.
, can be in any combination in the case where not conflicting between technical scheme described in the embodiment of the present invention.
In several embodiments provided by the present invention, it should be understood that disclosed method and smart machine, Ke Yitong
Other modes are crossed to realize.Apparatus embodiments described above are only schematical, for example, the division of the unit, only
Only a kind of division of logic function, can have other dividing mode, such as when actually realizing：Multiple units or component can be tied
Close, or be desirably integrated into another system, or some features can be ignored, or do not perform.In addition, shown or discussed each group
Into the mutual coupling in part or direct-coupling or communication connection can be by some interfaces, equipment or unit it is indirect
Coupling or communication connection, can be electrical, mechanical or other forms.
The above-mentioned unit illustrated as separating component can be or may not be physically separate, show as unit
The part shown can be or may not be physical location, you can positioned at a place, can also be distributed to multiple network lists
In member；Partly or entirely unit therein can be selected to realize the purpose of this embodiment scheme according to the actual needs.
In addition, each functional unit in various embodiments of the present invention can be fully integrated into a second processing unit,
Can also be each unit individually as a unit, can also two or more units it is integrated in a unit；
Above-mentioned integrated unit can both be realized in the form of hardware, and hardware can also be used to add the form of SFU software functional unit real
It is existing.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.
Claims (11)
1. a kind of distributed data transport method based on Unacknowledged Mode wireless spread-spectrum technology UM rlc protocols, its feature exist
In setting Central Transmission buffer unit and central service data cell SDU to reorder unit in UM RLC entities；Methods described
Including：
After the Central Transmission buffer unit receives UM RLC service data units SDU, by the UM RLC SDU with UM RLC
The form of SDU bursts is sent to corresponding branch Radio Link；
The central SDU reorder unit receive branch Radio Link transmission UM RLC SDU cluster after, to each
UM RLC SDU cluster on Radio Link are ranked up, in order by the UM RLC SDU cluster after sequence
UM RLC SDU are sent to high level.
2. according to the method for claim 1, it is characterised in that all UM RLC in the UM RLC SDU cluster
SDU is complete UM RLC SDU.
3. according to the method for claim 1, it is characterised in that the UM RLC included in the UM RLC SDU cluster
SDU data volume can meet that the time that branch Radio Link is persistently sent is not less than preset duration.
4. according to the method for claim 1, it is characterised in that the Central Transmission buffer unit is by the UM RLC SDU
Sent in a manner of pressing fifo fifo in the form of UM RLC SDU bursts to corresponding branch Radio Link.
5. the method according to claim 3 or 4, it is characterised in that methods described also includes：
The central SDU reorder unit by the UM RLC SDU in the UM RLC SDU cluster in branch Radio Link with
FIFO mode is sent.
6. a kind of distributed data transport device based on UM rlc protocols, it is characterised in that described device includes：
Central Transmission buffer unit, for receiving UM RLC service data unit SDU, and by the UM RLC SDU with UM RLC
The form of SDU bursts is sent to corresponding branch Radio Link；
Central SDU reorders unit, after the UM RLC SDU cluster for receiving the transmission of branch Radio Link, to each
UM RLC SDU cluster on Radio Link are ranked up, in order by the UM RLC SDU cluster after sequence
UM RLC SDU are sent to high level.
7. device according to claim 6, it is characterised in that all UM RLC in the UM RLC SDU cluster
SDU is complete UM RLC SDU.
8. device according to claim 6, it is characterised in that the UM RLC included in the UM RLC SDU cluster
SDU data volume can meet that the time that branch Radio Link is persistently sent is not less than preset duration.
9. device according to claim 6, it is characterised in that the Central Transmission buffer unit, be additionally operable to the UM
RLC SDU are sent in a manner of pressing fifo fifo in the form of UM RLC SDU bursts to corresponding branch Radio Link.
10. device according to claim 7, it is characterised in that the central SDU reorders unit, be additionally operable to by branch without
The UM RLC SDU in UM RLC SDU cluster in wired link are sent in fifo fashion.
11. a kind of UM RLC entities, it is characterised in that including being assisted any one of claim 6 to 10 based on UM RLC
The distributed data transport device of view.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610704706.5A CN107770231B (en) | 2016-08-22 | 2016-08-22 | Distributed data transport method and device, UM RLC entity based on UM rlc protocol |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610704706.5A CN107770231B (en) | 2016-08-22 | 2016-08-22 | Distributed data transport method and device, UM RLC entity based on UM rlc protocol |
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| Publication Number | Publication Date |
|---|---|
| CN107770231A true CN107770231A (en) | 2018-03-06 |
| CN107770231B CN107770231B (en) | 2019-11-26 |
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| WO2015142246A1 (en) * | 2014-03-21 | 2015-09-24 | Telefonaktiebolaget L M Ericsson (Publ) | Methods and devices for device to device communication source address change indication |
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2016
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| CN101682864A (en) * | 2007-06-18 | 2010-03-24 | 高通股份有限公司 | Method and apparatus for pdcp reordering at handoff |
| WO2015050735A1 (en) * | 2013-10-02 | 2015-04-09 | Public Wireless, Inc. | Systems and methods for deployment operations for small cells in self-organizing networks |
| CN103888219A (en) * | 2014-03-11 | 2014-06-25 | 华为技术有限公司 | Method and device for receiving unacknowledged wireless link control layer data |
| WO2015142246A1 (en) * | 2014-03-21 | 2015-09-24 | Telefonaktiebolaget L M Ericsson (Publ) | Methods and devices for device to device communication source address change indication |
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Non-Patent Citations (1)
| Title |
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| CN107770231B (en) | 2019-11-26 |
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