CN101299711B - Method and equipment for converting data cell as well as data cell transmission system - Google Patents
Method and equipment for converting data cell as well as data cell transmission system Download PDFInfo
- Publication number
- CN101299711B CN101299711B CN2007101056269A CN200710105626A CN101299711B CN 101299711 B CN101299711 B CN 101299711B CN 2007101056269 A CN2007101056269 A CN 2007101056269A CN 200710105626 A CN200710105626 A CN 200710105626A CN 101299711 B CN101299711 B CN 101299711B
- Authority
- CN
- China
- Prior art keywords
- data unit
- service data
- business
- service
- head construction
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Communication Control (AREA)
Abstract
本发明提供数据单元转换的方法及设备及数据单元传输的系统。数据单元转换的方法包括：将服务数据单元按照业务类型分类；将所述分类后的服务数据单元生成协议数据单元的数据部分；为所述协议数据单元的数据部分添加所属分类的头部结构，生成协议数据单元。本发明减少传输过程中数据单元的开支，提高传输效率。
The invention provides a data unit conversion method and equipment and a data unit transmission system. The data unit conversion method includes: classifying the service data unit according to the business type; generating the data part of the protocol data unit from the classified service data unit; adding the header structure of the category to the data part of the protocol data unit, Generate a protocol data unit. The invention reduces the expense of the data unit in the transmission process and improves the transmission efficiency.
Description
Technical field
The present invention relates to the communications field, relate in particular to the system of a kind of method for converting data cell, equipment and data unit transmission.
Background technology
In the communications field, when communicating between different user, for the ease of handling, transmit leg equipment can convert concrete professional user data cell to the data cell in transmission over networks; Receiver equipment is received after the data cell of transmission over networks, the data cell of transmission over networks is converted to the user data cell of concrete business again; Thereby the data communication on the realization network between the different user.Concrete professional user data cell is called service data unit (SDU, Service Data Unit).Specifically, the technology that relates to above-mentioned data unit transmission comprises following flow process:
One, sends the line data conversion of advancing;
Transmit leg equipment can be handled to sent SDU earlier, such as a SDU is divided into several little data cells, perhaps several SDU cascades are generated a big data cell, and, comprise the sequence number of Protocol Control Information and each data block in this transmission head construction for the small data unit of each generation or big data cell add a transmission head construction.Send SDU and handle the data cell that obtains and be called protocol Data Unit (PDU, Protocol Data Unit), comprise the data division formed by SDU and the transmission head construction of interpolation among each PDU.
Two, receiving laggard line data resolves;
After receiver equipment was received PDU, the sequence number according to this data block in the head construction removed head construction, converts data division to user data; Realize the data communication between the different user in the network.Existing SDU is converted in the PDU technology, all based on byte or all add head construction to carry out the conversion of data cell for each data division based on frame.
In the prior art, data cell when conversion the transmission head construction for the small data unit of each generation or big data cell interpolation two kinds of schemes are arranged: one, based on the head construction of frame; Two, based on the head construction of byte.In the implementation process of these two kinds of schemes,, then in the conversion of all service-user data, all can add head construction based on frame if set in advance the transmission head construction for head construction based on frame; In like manner, if set in advance the transmission head construction, then in the conversion of all service-user data, all can add head construction based on byte for head construction based on byte.
As shown in the above, in the prior art, the different business user data all is to add identical transmission head construction, takes into account the requirement of all service-user data in order to satisfy transmission head construction needs, comprises field as much as possible in a kind of prior art PDU transmission head construction.But these fields as much as possible are unwanted for some business.Such as the request recipient condition report feedback field of transmission in the head construction,, service traffics short for service data unit evenly and not need to retransmit and the class business fed back is unwanted.The length that these fields can increase head construction occurs in such professional PDU transmission head construction, increase the consumption of bandwidth in the transmission course, be unfavorable for the raising of efficiency of transmission.
In addition, in order to save the spending of head construction in transmission course, also can select to remove some professional unwanted fields in the another kind of prior art PDU transmission head construction.After removing some professional unwanted fields, concerning other need the business of these fields, can not satisfy professional demand itself again, user's experience is relatively poor.Such as the request recipient condition report feedback field in the head construction,, service traffics short for data cell evenly and not need to retransmit and the class business fed back is unwanted, the designer may select to remove this field, but for the class business that service data unit is long, service traffics are inhomogeneous and need retransmit and feed back is again necessary, when the user selects such professional, because imperfect such business that causes of such professional PDU transmission head construction can not be transmitted well, user experience is obviously relatively poor.
In addition, sequence number length in the prior art PDU transmission head construction is fixed, this sequence number length is for satisfying all traffic sequence length, often specific length is a maximum, require not long business for some sequence number, the long sequence number length of head construction has increased unnecessary expenditures, thereby can not improve the efficiency of transmission of such Service Data Unit effectively.
Summary of the invention
The embodiment of the invention provides the system of a kind of method for converting data cell, equipment and data unit transmission, improves the efficiency of transmission of data cell.
The embodiment of the invention provides a kind of method for converting data cell, comprising:
Service data unit is classified according to type of service; Described sorted service data unit is generated the data division of protocol Data Unit; Head construction for classification under the data division interpolation of described protocol Data Unit generates protocol Data Unit.
The embodiment of the invention also provides a kind of equipment of data cell conversion, comprising:
Sort module is used for service data unit is classified according to type of service; The data division generation module is used for the data division with described sorted service data unit generation protocol Data Unit; And the interpolation module, be used to the data division of described protocol Data Unit to add affiliated head construction of classifying, generate protocol Data Unit.
The embodiment of the invention also provides a kind of system of data unit transmission, comprising:
Transmit leg equipment is used for service data unit is generated protocol Data Unit according to type of service classification back, and sends described protocol Data Unit; And receiver equipment, be used to receive described protocol Data Unit, and resolve described protocol Data Unit according to type of service, generate service data unit.
As can be seen from the above technical solutions, owing to service data unit is carried out again in the embodiment of the invention conversion of data cell after according to the type of service classification, the service data unit of different service types adds different transmission head constructions, being regardless of type of service with respect to service data unit in the prior art adds identical head construction and causes the low technological deficiency of data transmission efficiency, the embodiment of the invention is added the transmission head construction that is fit to for the service data unit that needs conversion, not only avoid unnecessary waste but also satisfy the demand that every kind of Service Data Unit is changed, improved efficiency of transmission and user experience.
Description of drawings
Fig. 1 is the method for converting data cell figure that the embodiment of the invention provides;
Fig. 2 is the method figure that the data cell that provides of the embodiment of the invention is resolved;
Fig. 3 is the process of analysis figure of the PDU of the second class business that provides of the embodiment of the invention;
Fig. 4 is the data cell conversion equipment figure that the embodiment of the invention provides;
Fig. 5 is the data cell analyzing device figure that the embodiment of the invention provides;
Fig. 6 is the system diagram of the data unit transmission that provides of the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of method and apparatus of data cell conversion/parsing and the system of data unit transmission.The embodiment of the invention can improve the efficiency of transmission of data cell, satisfies the different demands of different business, improves user experience.
Followingly the invention provides detailed embodiment.
Seeing also Fig. 1 is the method for converting data cell figure that the embodiment of the invention provides.
Need be in network during another user communication as the user, the application layer program generates user data SDU, and transport layer enters following step after receiving professional SDU from application layer:
Whether the SDU characteristics of every class business and business datum flow and business datum need to retransmit, and have difference according to different business.Generally speaking, can whether whether all even business datum need to retransmit according to the service data unit length variations size of business, business datum flow, the SDU of business can be divided into two big classes; Professional SDU length variations is little, the business datum flow even and business datum does not need to retransmit, and then such professional SDU is divided into the SDU of first kind business; Professional SDU length variations is big, the business datum flow is inhomogeneous and business datum need retransmit the SDU that such professional SDU then is divided into the second class business.
Such as ip voice bearer service (VOIP, Voice on IP), the SDU length variations of VOIP business is little, and the business datum flow is even, and does not need to retransmit, so the SDU of VOIP business is divided into the SDU of first kind business; The SDU length variations of affirmation mode business (AM, Acknowledge mode) is big, and the business datum flow is inhomogeneous, and needs to retransmit, so the SDU of AM business is divided into the SDU of the second class business.
The rule of above-mentioned classification can be preset in the transmit leg equipment, after transport layer receives SDU from the upper strata, according to the classifying rules that presets SDU is classified.
After SDU is classified, a SDU is divided into several little data cells or several SDU cascades are generated a big data cell, the data division of a data cell that these are little or a big data cell composition PDU.After forming the data division of PDU, execution in step 103 further generates complete PDU.
In embodiments of the present invention, for the data division of the SDU that derives from first kind business adds head construction based on frame, for the data division of the SDU that derives from the second class business adds head construction based on byte.
The embodiment of the invention is the example explanation with the head construction of Radio Link control (RLC, Radio Link Control) agreement PDU.Below be based on the RLC PDU head construction of frame:
RLC?PDU?Header＝{RBID，RLC?SN，Start?flag，End?flag，list?of{Extensionflag，Length?Indicator}}
Wherein, list of represents to have a plurality of Extension flag and Length Indicator field, and each field implication sees Table one:
Table one
| Field | Implication |
| RLC?PDU?Header | RLC PDU head |
| RBID | The radio bearer sign |
| RLC?SN | This PDU of sequence identification is in the position of whole service PDU |
| Start?Flag | Whether first byte of sign PDU is first byte of a SDU |
| End?Flag | Whether last byte of sign PDU is last byte of a SDU |
| Extension flag | Expression immediately following this field back be Length Indicator field, or the beginning of SDU data.1 expression is that the back is a Length Indicator field, and 0 expression is the beginning of SDU data |
| Length Indicator | The length of PDU |
Below be based on the RLC PDU head construction of byte:
RLC?PDU?Header＝{RBID，Type，P，RLC?SN，Start?flag，End?flag，listof{Extension?flag，Length?Indicator}}
Wherein, list of represents a plurality of Extension flag and Length Indicator field, and each field implication sees Table two:
Table two
| Field | Implication |
| RLC PDU Header | RLC PDU head |
| RBID | The radio bearer sign |
| TYPE | Indicate that this PDU is data PDU or control PDU |
| P | Request recipient condition report feedback |
| RLC SN | The position of PDU in professional PDU, this position is with the byte offset quantitative character |
| Start Flag | Whether first byte of sign PDU is first byte of a SDU |
| End Flag | Whether last byte of sign PDU is last byte of a SDU |
| Extension flag | E represent immediately following the E back be Length Indicator field, or the beginning of SDU data.1 expression is LI, and 0 expression is the beginning of SDU data |
| Length Indicator | The length of PDU |
Need to prove that RLC SN is with the byte offset quantitative character in based on the head construction of byte, specifically, the SN of each PDU is with the start byte of these PDU loaded service data sign.
Wherein the PDU sequence number length in the head construction can calculate or service data transmission rate, propagation delay time and service data unit bag length calculate with service data transmission rate and propagation delay time.
Transmission rate as the VOIP business is per second 50 frames, is 300ms if allow propagation delay time, so PDU sequence number length=log (50 * the 0.3)/log2=4bits of VOIP business; 50 is per second 50 frames in this computing formula, the 0.3rd, and propagation delay time 300ms, 2 expression binary systems.
And for example: the transmission rate of AM business is 100Mbps, is 50ms if allow propagation delay time, is unit if the general minimum SDU of regulation wraps long 40byte, so PDU sequence number length=log ((100/40) * 10
6* 0.05)/log2=17bits; 100 is transmission rate 100Mbps in this formula, the 40th, and the long 40byte of general minimum SDU bag, the 0.05th, propagation delay time 50ms, 2 expression binary systems.
So far, transmit leg equipment has generated PDU with SDU, and PDU finally arrives receiver equipment in transmission over networks, after receiver equipment is received PDU, PDU need be resolved and generate SDU, thereby realize the communication between the network different user.
The method figure that the data cell that seeing also Fig. 2 and be the embodiment of the invention provides is resolved.
Receiver equipment enters following steps after receiving the PDU of transmit leg equipment transmission:
All concrete service identification can be arranged in the head construction of PDU, be the radio bearer sign as the RBID field of carrying in the RLC PDU head construction, and RBID identifies the concrete type of service that this PDU is a wireless bearer service.Preset every kind of concrete professional assortment in the receiver equipment, the assortment that presets is corresponding with concrete classification with service identification; After receiver equipment is received PDU, use the service identification that carries in this PDU head construction to inquire about the assortment that presets, this PDU is categorized as professional PDU of the first kind or the professional PDU of second class.
The principle of classification of the assortment that presets is that if such professional SDU length variations is little, the business datum flow is even and business datum does not need to retransmit, then such professional PDU corresponds to the PDU of first kind business; If such professional SDU length variations is big, the business datum flow is inhomogeneous and business datum needs to retransmit, then such professional PDU corresponds to the PDU of the second class business.
When the protocol Data Unit that receives is the protocol Data Unit of first kind business, directly PDU is removed the transmission head, generate professional SDU.
When the protocol Data Unit that receives is the protocol Data Unit of the second class business, resolves sorted protocol Data Unit and realize by following steps:
See also Fig. 3 and be the process of analysis figure of the PDU of the second class business that the embodiment of the invention provides.
During receiving business datum, recipient's receive window size is unalterable, and the size of receive window need be pre-configured before business connects foundation.
The size of receive window is by accepting state variable, best expectation state variable and the control of maximum acceptable received state variable.The accepting state variable when the SN of the PDU that receives equals this variate-value, upgrades this accepting state variable by the SN decision of the next PDU of last PDU that has received according to the order of sequence; The best expectation state variable is the SN of the next PDU of the PDU of the highest SN that received; Maximum acceptable received state variable is the SN of the PDU of first side's of being received refusal.
The position of this protocol Data Unit in business datum all can be arranged in the head construction of protocol Data Unit, in table one and table two, RLC SN is arranged in the head construction of RLC PDU.
When sequence number that protocol Data Unit carries is in the receive window scope, execution in step 2022; The sequence number that carries when protocol Data Unit directly abandons this protocol Data Unit during not in the receive window scope.
Arrange by sequence number when checking that the sequence number that carries in the PDU head construction checks that the PDU that receives whether; If the PDU that receives arranges according to sequence number, direct execution in step 2026 is when checking that sequence number that PDU carries is not when arranging according to sequence number, execution in step 2023.
The out of order PDU that step 2023, buffer memory receive, and start timer;
If in the timer official hour, receive out of order PDU, execution in step 2025; In the timer official hour, do not receive out of order PDU, execution in step 2024;
Receiver equipment sends the notice that retransmits unreceived out of order PDU to transmit leg equipment, and after receiving all out of order PDU, execution in step 2025 sorts out of order PDU again, and execution in step 2026 then.Receiver equipment is according to the sequence number that carries in the PDU head construction, and the sequence number range that the user this time sends all PDU that SDU generates judges whether out of order PDU receives.
After receiving all out of order PDU, after out of order PDU sorted, execution in step 2026 was resolved PDU;
The transmission head construction that parsing protocol data unit promptly removes in the protocol Data Unit obtains data division.
The protocol Data Unit of the second class business generates service data unit with data division after resolving, and finishes user data and is sent to the process of another equipment from an equipment, realizes the communication between the user in the network.
Need to prove, can check earlier whether the PDU that receives is out of order in the resolving of the professional PDU of above-mentioned second class, checking that PDU is not out of order or out of order after rearrangement, reexamine sequence number that PDU carries whether in the receive window scope, after the receive window scope, resolve this PDU checking sequence number that this PDU carries.
More than two embodiment data cell of having described user data respectively the flow process that the data cell that is beneficial to transmission and the data cell that will be beneficial to transmission generate the data cell of user data, the following apparatus embodiments that realizes two flow processs that provides are provided to.
See also Fig. 4 and be the equipment drawing of the data cell conversion that the embodiment of the invention provides.
As shown in the figure, the equipment of data cell conversion comprises:
Data division generation module 320 is used for the data division with the sorted service data unit generation of described sort module protocol Data Unit;
Add module 330, be used to the data division of described protocol Data Unit to add affiliated head construction of classifying, generate protocol Data Unit.
Following principle of classification and the sorted result that sort module is provided:
Whether whether all even business datum needs to retransmit described classification of transaction module that service data unit is classified according to the service data unit length variations size of business, business datum flow;
If the service data unit length variations of described business is little, the business datum flow is even and business datum does not need to retransmit, then described service data unit is divided into the service data unit of first kind business;
The described service data unit of described sort module classification be the second class business service data sheet if the service data unit length variations of described business is big, the business datum flow is inhomogeneous and business datum needs to retransmit, then described service data unit is divided into the service data unit of the second class business.
When the described service data unit of described sort module classification was first kind business service data cell, the data division that described interpolation module is described protocol Data Unit added the head construction based on frame; During unit, the data division that described interpolation module is described protocol Data Unit adds the head construction based on byte.
According to the flow process of data cell conversion method embodiment of the present invention, data cell conversion equipment of the present invention also comprises: sequence number length computation module 340;
Described sequence number length computation unit 340 is used for the classification according to described sort module, calculates and obtain the length of sequence number in the protocol data unit head bilge construction respectively for the service data unit of different service types;
When described interpolation module 330 was added the head construction of affiliated classification at the data division that is described protocol Data Unit, the sequence number length of calculating according to described sequence number length computation module was to add sequence number in the described head construction.
Correspondingly, the equipment of data cell conversion has been arranged,, also needed the equipment of resolution data unit in order to realize the communication between the user in the network.
Seeing also Fig. 5 is the data cell analyzing device figure that the embodiment of the invention provides.
As shown in the figure: the data cell analyzing device comprises:
Protocol data sort module 410 is used for protocol Data Unit is classified by type of service;
Parsing module 420 is used for sorted protocol Data Unit is resolved by affiliated type of service, generates service data unit.
The principle of classification and the classification results of protocol data taxon are as follows:
The assortment that the service identification inquiry of carrying in the protocol data taxon use agreement data cell is preset, protocol Data Unit is divided into the first kind service protocol data cell or the second class service protocol data cell, the protocol Data Unit of differentiated service type is provided for described resolution unit;
The principle of classification of the described assortment that presets is: if the service data unit length variations of described business is little, the business datum flow is even and business datum does not need to retransmit, then the protocol Data Unit of described business corresponds to the protocol Data Unit of first kind business;
If the service data unit length variations of described business is big, the business datum flow is inhomogeneous, and business datum needs to retransmit, and then the protocol Data Unit branch of described business corresponds to the protocol Data Unit of the second class business.
When the protocol Data Unit of described protocol data sort module classification was the second class service protocol data cell, described data cell analyzing device also comprised: sequence number range is checked module 430 and out of order inspection module 440;
When the protocol Data Unit of described protocol data sort module classification was the second class service protocol data cell, sequence number range was checked module 430, was used to check that sequence number that described protocol Data Unit carries is whether in the receive window scope;
Out of order inspection module 440 is used to check whether described protocol Data Unit is out of order;
Described parsing module 420 checks that in described sequence number range sequence number that the described protocol Data Unit of module check carries is in the receive window scope, after the described protocol Data Unit of described out of order inspection module check is not out of order, resolve described protocol Data Unit, generate professional service data unit.
When sequence number range checks that sequence number that the described protocol Data Unit of module check carries is not in the receive window scope, abandon described protocol Data Unit.
When the described protocol Data Unit of out of order inspection module check was out of order, described data cell analyzing device also comprised: cache module 450, timer 460, retransmission module 470 and order module 480;
When sequence number that described protocol Data Unit carries in the receiver window scope, and the described protocol Data Unit of out of order inspection module check is when out of order, cache module 450 is used for the out of order protocol Data Unit that buffer memory receives;
Described parsing module 420 is resolved the protocol Data Unit of described order module ordering, generates service data unit.
The above-mentioned embodiment of data cell conversion equipment provided by the invention and the embodiment of data cell analyzing device of describing respectively; In the communications field, realize the communication between the different user, need a plurality of equipment to participate in the following system embodiment that the invention provides data unit transmission simultaneously.The system of data unit transmission comprises transmit leg equipment and receiver equipment, and transmit leg equipment possesses the function and the structure of data cell conversion equipment, and same receiver equipment possesses the function and the structure of data cell analyzing device.
See also Fig. 6 and be the system diagram of the data unit transmission that the embodiment of the invention provides.
As shown in the figure: the system of data unit transmission comprises:
Transmit leg equipment 300 is used for service data unit is generated protocol Data Unit according to type of service classification back, and sends described protocol Data Unit; And
According to the concrete function of transmit leg equipment, that the refinement of transmit leg device structure is as follows:
Data division generation module 320 is used for the data division with the sorted service data unit generation of described sort module protocol Data Unit;
Add module 330, be used to the data division of described protocol Data Unit to add head construction, generate protocol Data Unit; And
Sending module 350 is used to send described protocol Data Unit.
Equally, according to the concrete function of receiver equipment, that the structure refinement of receiver equipment is as follows:
Protocol data sort module 410 is used for described protocol Data Unit is classified by type of service; And
Parsing module 420 is used to resolve described sorted protocol Data Unit, generates service data unit.
The system of transfer of data finishes the transmission of data in the network, realizes the communication between the different user.
Because whether whether all even business datum needs re-transmission that service data unit is classified by type of service according to professional service data unit length variations size, business datum flow in the embodiment of the invention, according to business characteristic data cell is classified, thereby realize according to business characteristic being that different Service Data Units adds suitable head construction, the exploitativeness of enhanced scheme.
Further, because being provided as the data division of described protocol Data Unit, the embodiment of the invention adds in the head construction, use the sequence number length in service data transmission rate and the propagation delay time calculating head construction, the sequence number of regular length in the relative prior art, the embodiment of the invention provides different kinds of business that different sequence number length is arranged, reduce sequence number length unnecessary expenditures in some service protocol data cell head constructions, improve the efficient of transmission.
More than the system of a kind of method for converting data cell provided by the present invention, equipment and data unit transmission is described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and thought thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (9)
1. a method for converting data cell is characterized in that, comprising:
If professional service data unit length variations is little, the business datum flow even and business datum does not need to retransmit, then described service data unit is divided into the service data unit business of first kind business; If professional service data unit length variations is big, the business datum flow is inhomogeneous, and business datum needs to retransmit, and then described service data unit is divided into the service data unit of the second class business;
Described sorted service data unit is generated the data division of protocol Data Unit;
Head construction for classification under the data division interpolation of described protocol Data Unit generates protocol Data Unit.
2. method for converting data cell according to claim 1 is characterized in that,
When described service data unit was the service data unit of first kind business, the head construction that adds for the data division of described protocol Data Unit was the head construction based on frame;
When described service data unit was the service data unit of the second class business, the head construction that adds for the data division of described protocol Data Unit was the head construction based on byte.
3. method for converting data cell according to claim 2 is characterized in that,
When described service data unit is the service data unit of first kind business, use service data transmission rate and propagation delay time to calculate and obtain the length of sequence number in the described head construction;
When described service data unit is the service data unit of the second class business, use service data transmission rate, propagation delay time and service data unit length to calculate and obtain the length of sequence number in the described head construction.
4. the equipment of a data cell conversion is characterized in that, comprising:
Sort module is used for, business datum flow little when professional service data unit length variations evenly and business datum when not needing to retransmit, and described service data unit is categorized as the service data unit of first kind business; When the service data unit length variations of business is big, the business datum flow is inhomogeneous and business datum need retransmit the time, described service data unit is categorized as the service data unit of the second class business;
The data division generation module is used for the data division with described sorted service data unit generation protocol Data Unit; And
Add module, be used to the data division of described protocol Data Unit to add affiliated head construction of classifying, generate protocol Data Unit.
5. the equipment of data cell conversion according to claim 4 is characterized in that,
When described service data unit was classified as first kind business service data cell, the data division that described interpolation module is described protocol Data Unit added the head construction based on frame;
When described service data unit was classified as the second class business service data cell, the data division that described interpolation module is described protocol Data Unit added the head construction based on byte.
6. according to the equipment of claim 4 or 5 described data cell conversions, it is characterized in that the equipment of described Date Conversion Unit conversion also comprises the sequence number length computation unit;
Described sequence number length computation unit is used for the classification according to described sort module, calculates and obtain the length of sequence number in the protocol data unit head bilge construction respectively for the service data unit of different service types;
When described interpolation module was added the head construction of affiliated classification at the data division that is described protocol Data Unit, the length of the described sequence number of foundation was that described head construction adds sequence number.
7. the system of a data unit transmission is characterized in that, comprising:
Transmit leg equipment is used for, business datum flow little when professional service data unit length variations evenly and business datum when not needing to retransmit, and described service data unit is categorized as the service data unit of first kind business; When the service data unit length variations of business is big, the business datum flow is inhomogeneous and business datum need retransmit the time, described service data unit is categorized as the service data unit of the second class business, and the data division of the service data unit corresponding protocols data cell of professional in the described first kind respectively and the second class business adds the head construction of affiliated classification, generate protocol Data Unit, and send described protocol Data Unit; And
Receiver equipment is used to receive described protocol Data Unit, and resolves described protocol Data Unit according to type of service, generates the service data unit of first kind business or the service data unit of the second class business.
8. data unit transmission according to claim 7 system is characterized in that described transmit leg equipment further comprises:
Sort module is used for, business datum flow little when professional service data unit length variations evenly and business datum when not needing to retransmit, and described service data unit is categorized as the service data unit of first kind business; When the service data unit length variations of business is big, the business datum flow is inhomogeneous and business datum need retransmit the time, described service data unit is categorized as the service data unit of the second class business;
The data division generation module is used for the data division with the sorted service data unit generation of described sort module protocol Data Unit;
Add module, be used to the data division of described protocol Data Unit to add head construction, generate protocol Data Unit, the head construction of the service data unit of described first kind business is the head construction based on frame, and the head construction of the service data unit of described second business is the head construction based on byte; And
Sending module is used to send described protocol Data Unit.
9. according to claim 7 or 8 described data unit transmission systems, it is characterized in that described receiver equipment further comprises:
Receiver module is used to receive described protocol Data Unit;
The protocol data sort module is used for described protocol Data Unit is classified by type of service; And
Parsing module is used to resolve described sorted protocol Data Unit, generates the service data unit of first kind business or the service data unit of the second class business.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101056269A CN101299711B (en) | 2007-04-30 | 2007-04-30 | Method and equipment for converting data cell as well as data cell transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101056269A CN101299711B (en) | 2007-04-30 | 2007-04-30 | Method and equipment for converting data cell as well as data cell transmission system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101299711A CN101299711A (en) | 2008-11-05 |
| CN101299711B true CN101299711B (en) | 2011-08-10 |
Family
ID=40079404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101056269A Expired - Fee Related CN101299711B (en) | 2007-04-30 | 2007-04-30 | Method and equipment for converting data cell as well as data cell transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101299711B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104426866B (en) * | 2013-08-28 | 2018-12-14 | 华为技术有限公司 | A kind of data transmission method and device |
| CN107211312B (en) * | 2015-09-30 | 2020-02-14 | 华为技术有限公司 | Data transmission method and device |
| CN108631921B (en) * | 2017-03-24 | 2020-10-20 | 电信科学技术研究院 | Method and device for processing SN length |
| WO2019024105A1 (en) * | 2017-08-04 | 2019-02-07 | Oppo广东移动通信有限公司 | Method of supporting data replication, transmitting terminal device and receiving terminal device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006071052A1 (en) * | 2004-12-27 | 2006-07-06 | Lg Electronics Inc. | A method of transmitting feedback information using an extended subheader |
| CN1906906A (en) * | 2004-01-09 | 2007-01-31 | Lg电子株式会社 | Optimized radio bearer configuration for voice over IP |
| CN1921346A (en) * | 2005-08-24 | 2007-02-28 | 华为技术有限公司 | Data segmentation cascade transmitting method |
-
2007
- 2007-04-30 CN CN2007101056269A patent/CN101299711B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1906906A (en) * | 2004-01-09 | 2007-01-31 | Lg电子株式会社 | Optimized radio bearer configuration for voice over IP |
| WO2006071052A1 (en) * | 2004-12-27 | 2006-07-06 | Lg Electronics Inc. | A method of transmitting feedback information using an extended subheader |
| CN1921346A (en) * | 2005-08-24 | 2007-02-28 | 华为技术有限公司 | Data segmentation cascade transmitting method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101299711A (en) | 2008-11-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100631271B1 (en) | Packet aggregation transmission method | |
| CN101073218B (en) | Enhanced block acknowledgement | |
| CN101656986B (en) | Wireless communication device, communication system, communication control method, and program | |
| JP2004186892A (en) | Packet transmitting system and packet reception system | |
| CN1301445A (en) | Link-efficiency based scheduling in radio data communications systems | |
| CN1593051A (en) | Extension header compression | |
| RU2004125489A (en) | PROVISION OF MULTI-ADDRESS TRANSMISSION SERVICES BY MULTI-POINT METHOD FOR A RADIO COMMUNICATION SYSTEM | |
| US7403543B2 (en) | TCP/IP header compression format and method over wireless network | |
| CN101479982A (en) | Base station, mobile station, and communication method | |
| CN101605304A (en) | Content distribution system, content distribution device, terminal device and content distribution method | |
| CN1961599A (en) | Method and devices for duplicated packets identification during handover | |
| CN1574793A (en) | Mobile ip data communication system | |
| US7079854B2 (en) | Packet service system and method for controlling packet transmission | |
| CN101299711B (en) | Method and equipment for converting data cell as well as data cell transmission system | |
| KR101600060B1 (en) | Protocol booster for sctp in multicast networks | |
| EP1207709A1 (en) | Retransmission control method and the apparatus | |
| US20040125747A1 (en) | Methods and apparatus for flow control based packet aggregation in a communication network | |
| US12278759B2 (en) | Communication method and apparatus | |
| CN101005336A (en) | Adpative jam control method and system suitable for satellite network | |
| KR20070115377A (en) | Automatic Retransmission Request Device and Method for Orthogonal Frequency Division Multiple Access | |
| CN111355801A (en) | Remote artificial intelligence communication service handling system and control method thereof | |
| CN107426768B (en) | A wireless self-organizing network data transmission method | |
| WO2003081853A1 (en) | Data transmission device, REPEATER device, data transmission/reception device, and data communication method | |
| US20050285755A1 (en) | Transmitter, communication system, and communication method | |
| CN115211226B (en) | Communication method and communication device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 |