CN101330446B - Analysis method for enhancing protocol layer frame of special transmission channel - Google Patents
Analysis method for enhancing protocol layer frame of special transmission channel Download PDFInfo
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- CN101330446B CN101330446B CN2007101124209A CN200710112420A CN101330446B CN 101330446 B CN101330446 B CN 101330446B CN 2007101124209 A CN2007101124209 A CN 2007101124209A CN 200710112420 A CN200710112420 A CN 200710112420A CN 101330446 B CN101330446 B CN 101330446B
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Abstract
The invention discloses a frame protocol (FP) frame parsing method for an enhanced dedicated transport channel (EDch), which comprises the following steps: a radio network controller (RNC) parses the frame header of a frame, caches parsed information, calculates to obtain the cyclical redundancy check (CRC) value of the frame header, and judges whether the calculated CRC value of the frame header is identical with the CRC value of the frame header recorded in the frame; if yes, the RNC parses the frame body of the frame by using the information obtained through the parsing. The method solves the problem that the conventional sequential frame parsing method is not suitable for such frame parsing, saves system resources, and effectively improves the FP frame processing efficiency of the EDch.
Description
Technical field
The present invention relates to 3-G (Generation Three mobile communication system), relate in particular to during a kind of high speed uplink packet inserts, on radio network controller, for the analytic method of the protocol layer frame of enhanced dedicated transport.
Background technology
Along with the user improves the continuous development with mobile communication technology day by day to the rate requirement under the mobile environment, high speed uplink packet inserts (High Speed Uplink Packet Access is hereinafter to be referred as HSUPA) technology and more and more receives people and pay close attention to and pay attention to.
In 3GPP TS25.427R6 protocol version; Stipulated (Radio Network Controller from NodeB (base station) to RNC; Radio network controller) direction, the frame protocol (FrameProtocol of enhanced dedicated transport (Enhanced Dedicated Transport Channel is hereinafter to be referred as EDch); Hereinafter to be referred as FP) the uplink frame data structure, as shown in Figure 1.
Up direction, EDch Fp module are accomplished from NodeB and are received the data row cache of going forward side by side, and after then every frame data being resolved, put into different MAC-es (Media Access Control, medium access control) and receive formation and further handle.
In order to reach the higher data transmission speed; The FP frame of EDch has been designed to have the Frame than labyrinth; And theoretic largest frames has reached more than the 200K byte, and frame head just can reach 120 more than the byte, and in frame inside in order to save the space; To can all omitting, all in frame, directly do not provide such as the total length and the frame head length of frame through calculating or search the content that other parameter list can infer.Traditional order is separated the method for frame; Always advanced wardrobe verification and sports school test; And then resolve concrete frame head and frame; Therefore, the method that traditional order is separated frame no longer is applicable to the parsing of this kind frame, current needs are a kind of high speed uplink packet is inserted in the frame analytic method of enhanced dedicated transport.
Summary of the invention
Technical problem to be solved by this invention provides the analytic method of the protocol layer frame of enhanced dedicated transport in a kind of high speed uplink packet access; Solve traditional order and separate the problem that the method for frame is applicable to that no longer this kind frame is resolved; Save system resource, improve the treatment effeciency of the FP frame of EDch effectively.
In order to address the above problem, the invention provides the frame analytic method of enhanced dedicated transport frame protocol in a kind of high speed uplink packet access, may further comprise the steps:
A, radio network controller are resolved the frame head of said frame; The information of resolving gained is carried out buffer memory; Calculate cyclic redundancy check value to the end; Judge a said cyclic redundancy check value that calculates whether with said frame in the cyclic redundancy check value that writes down consistent, if then carry out next step;
B, said radio network controller utilize the frame of the said frame of information analysis of said parsing gained.
Further, said method can comprise that also among the said step a, if judge that a cyclic redundancy check value that writes down in a said cyclic redundancy check value that calculates and the said frame is inconsistent, then said frame processing finishes.
Further, said method also can comprise, also comprise among the said step a,
Calculate the body cyclic redundancy check value, judge the said body cyclic redundancy check value that calculates whether with said frame in the body cyclic redundancy check value that writes down consistent, if, execution in step b then; Otherwise said frame processing finishes.
Further, said method also can comprise, utilizes the length that calculates said frame head among the said step a, obtains said cyclic redundancy check value; According to retrodict out the position of body CRC verification of the total length of said frame, then according to the length of the said frame head that obtains, obtain the starting position of said frame, calculate the body cyclic redundancy check value.
Further, said method also can comprise, resolves the information of gained described in the said step a, comprises data descriptor indication and data number, all carries out buffer memory through the structure of temporary variable array.
Further, said method also can comprise, may further comprise the steps among the said step a,
A1, resolve said frame head, obtain the cyclic redundancy check value, frame number, Connection Frame Number, the number of sub-frames that write down in the said frame, and carry out the congested control of frame according to Transmission Time Interval;
A2, resolve said frame head, obtain mixed automatic retransmission time, carry out exterior ring power control;
A3, judge whether the protocol Data Unit number that the medium access control receives formation is 0, if said frame processing finishes; Otherwise, carry out next step;
A4, the said medium access control that adds up receive the protocol Data Unit number of formation, and obtain said data descriptor indication and said data number successively.
Further, said method also can comprise, comprise among the said step b,
First data descriptor indication of b1, the said frame of processing;
B2, judge whether that the data descriptor indication of said frame is untreated, if carry out next step; Otherwise said protocol layer frame processing finishes;
B3, M+1 data descriptor handling said frame according to M data descriptor indication of said frame are indicated, and said M is a positive integer, execution in step b2.
Further, said method also can comprise, comprise among the said step b1,
From said temporary variable array, extract first data descriptor indication; Extract the pointer that corresponding first said medium access control receives the protocol Data Unit of formation, the function that calling said medium access control reception formation provides is gone into corresponding data descriptor indication formation.
Further, said method also can comprise, may further comprise the steps among the said step b3:
B31, indication obtains element length according to said data descriptor; The data number that the element length that makes M medium access control receive the protocol Data Unit of formation multiply by the protocol Data Unit of M medium access control reception formation adds 1; The value that obtains is added the pointer that M medium access control receives the protocol Data Unit of formation, thereby obtains the pointer that M+1 medium access control receives the protocol Data Unit of formation;
B32, M+1 the medium access control that will obtain receive the data number that pointer, a M+1 data descriptor are indicated, a M+1 medium access control receives the protocol Data Unit of formation of the protocol Data Unit of formation; And the index information of said protocol layer frame in buffering area, submit to the medium access control together and receive the corresponding data descriptor indication of formation queue processing;
B33, said medium access control receive the intact medium access control of queue processing and receive after the protocol Data Unit of formation, just notify said enhanced dedicated transport frame protocol that the protocol Data Unit number of the medium access control reception formation of said frame is subtracted 1.
Further, said method also can comprise, before execution in step a; Said radio network controller receives the frame of the frame protocol of the said enhanced dedicated transport that transmits the base station; Place it in the buffering area, in the time of each the scheduling, from buffering area, take out said frame data.
Further; Said method also can comprise; Before each scheduling, the buffering area of the frame of whole said enhanced dedicated transport frame protocol is scanned, discharge protocol Data Unit number that all medium access controls receive formations and be the data space of 0 said frame.
Compared with prior art; Owing to the invention provides the frame analytic method of the frame protocol of enhanced dedicated transport in a kind of high speed uplink packet access, solve traditional order and separated the problem that the method for frame is applicable to that no longer this kind frame is resolved, rearranged the processing sequence of frame; The CRC check of at first carrying out; Guarantee when CRC check fail when, not carry out remaining and handle, owing to data descriptor is indicated during the parsing frame head and the relevant information of data number is preserved, thereby the efficient of following parsing frame improved; Save system resource, improved the treatment effeciency of the FP frame of EDch effectively.
Description of drawings
Fig. 1 is the structure chart of the FP frame of EDch in the prior art;
Fig. 2 is the flow chart of analytic method of the FP frame of EDch in the specific embodiment of the invention
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated.
The analytic method of the FP frame of EDch in the specific embodiment of the invention may further comprise the steps:
Step 110, RNC take out frame data from buffering area;
RNC receives the FP frame that NodeB transmits, and places it in the buffering area, in the time of each the scheduling, from buffering area, takes out frame data.
Step 120, RNC resolve frame head, and the information of resolving gained is carried out buffer memory, calculate the length of frame head; Carry out CRC (the Cyclic Redundancy Code of head; Hereinafter to be referred as CRC), and calculate the deposit position of body CRC according to the length gauge of entire frame, carry out the verification of body CRC; If a CRC check or body CRC check mistake, then execution in step 140; Otherwise, carry out next step;
The information of said parsing gained mainly comprises data descriptor indication (Data DescriptionIndicator is hereinafter to be referred as DDI) and data number (hereinafter to be referred as N), all carries out buffer memory through the structure of temporary variable array.
The CRC check of at first carrying out guarantees when CRC check is failed, not carry out remaining processing.Therefore but owing to do not have direct definition frame head length degree in the frame structure, need to obtain,, thereby improved the efficient of following parsing frame simultaneously because the relevant information of DDI, N is preserved through calculating; Secondly, the body CRC check all is that order adds up from front to back usually, obtains body CRC deposit position; The meaning whether this verification is further handled for the parsing of frame is very big; Because the total length of frame is known, only need once to calculate directly to draw so retrodict from back to front, and order computation need add up one by one from front to back; Calculation procedure is more, so the mode that the body CRC check should employing be retrodicted from back to front in the specific embodiment of the invention.
Step 130, RNC utilize the information analysis frame of said parsing gained;
Utilize the information of said parsing gained, at first search the pairing protocol Data Unit of each DDI (Protocol Data Unit is hereinafter to be referred as PDU) length; Behind PDU length * N; Draw the total length that each MAC-es receives the PDU of formation, obtain the specific address in frame then, in order to reduce the number of times that data are duplicated; Corresponding M AC-es is sent in the address receives formation, receive queue according to after splitting and sorting by MAC-es.
Step 140, said frame processing finish.
Said frame processing finishes, and the RNC release data empties buffering area.
As shown in Figure 2, below in conjunction with instantiation the specific embodiment of the invention is further specified.
Step S201, RNC take out frame data from buffering area;
RNC receives the FP frame that NodeB transmits, and places it in the buffering area, in the time of each the scheduling, from buffering area, takes out frame data.
Step S202, parsing frame head carry out the congested control of frame;
Resolve frame head; Obtain the crc value, FSN (the Frame Sequence Number that write down in the frame; Frame number), CFN (Connection Frame Number; Connection Frame Number), Number of Subframes (number of sub-frames), and carry out the congested control of frame according to TTI (Transmission Time Interval, Transmission Time Interval).
Step S204, parsing frame head carry out exterior ring power control;
Continue to resolve frame head, obtain HARQ (Hybrid Automatic Request Repeat mixes automatically retransmitting) number of times, carry out exterior ring power control.
Step S206, judge whether the PDU number that Mac-es receives formation is 0, if, execution in step S218 then; Otherwise, execution in step S207;
Step S207, the Mac-es that adds up receive the PDU number of formation, and obtain DDI and N value information successively, record in the temporary variable array;
Step S208, judge the crc value calculate whether with frame in the crc value that writes down consistent, if, execution in step S210 then; Otherwise, execution in step S218;
The PDU that receives formation according to Mac-es calculates the length of frame head, calculates to lift one's head crc value.
Step S210, judge whether system configuration need carry out the body CRC check, if, execution in step S211 then; Otherwise, execution in step S212;
Step S211, judge the body crc value calculate whether with frame in the body crc value that writes down consistent, if, execution in step S212 then; Otherwise, execution in step S218;
According to retrodict out the position (be generally latter two byte, more like extended field is special circumstances) of body CRC check of the total length of frame, the frame head length of having calculated according to the front then can obtain the starting position of frame, calculates the body crc value.
First DDI of step S212, processing frame;
Handle frame, from the temporary variable array, extract the 1st DDI, extract the pointer that corresponding the 1st MAC-es receives the PDU of formation, the function that calling MAC-es reception formation provides is gone into corresponding DDI formation.
Call MAC-es and receive the function that formation provides, data pointer and the relevant parameter of PDU recorded in the corresponding DDI formation, abbreviate " joining the team " as.
Step S214, judge whether that the DDI of frame is untreated, if carry out next step; Otherwise, execution in step S218;
Step S216, handle the next DDI of this frame, execution in step S214;
Suppose that previous PDU is M, then current pending PDU is M+1, and said M is a positive integer.Handle M+1 DDI of frame according to M DDI of frame.At first, obtain element length, thereby obtain according to DDI information searching attribute list:
Pointer=M the MAC-es of the PDU of (M+1) individual MAC-es reception formation receives pointer+(M MAC-es of element length * of the PDU of M MAC-es reception formation receives N value+1 of the PDU of formation) of the PDU of formation.
M+1 MAC-es received the N value of PDU of pointer, a M+1 DDI, the M+1 MAC-es reception formation of the PDU of formation, and the information such as index of frame in buffering area, submit to MAC-es reception formation corresponding D DI queue processing together.
Whenever MAC-es receives after the intact MAC-es of queue processing receives the PDU of formation, the FP that just notifies EDch subtracts 1 with the PDU number that the Mac-es of said frame receives formation.
Corresponding 1 PDU of each DDI, the PDU here refers to the PDU that MAC-es receives formation, and above-mentioned processing is handled respectively the corresponding PDU of each DDI successively.
Said attribute list is configured through background data base, and after being obtained by chain of command, brings in RadioBearerSetup message the inside that user plane preserves.
Step S218, said frame processing finish.
Said frame processing finishes, and the RNC release data empties buffering area, carries out the parsing of next frame.
Wherein step S202 belongs to the process of resolving frame head to step S211, and step S212 belongs to the process of resolving frame to step S218.
Before each scheduling beginning, all the buffering area to the FP frame of whole EDch scans, and discharges PDU number that all Mac-es receive formations and be the data space of 0 frame.
Can find out that through above content the invention provides the method for the FP frame parsing of EDch among a kind of HSUPA, RNC adopts this method can effectively improve treatment effeciency.
The above; Be merely the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with this technological people in the technical scope that the present invention disclosed; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (11)
1. the frame analytic method of enhanced dedicated transport frame protocol during a high speed uplink packet inserts may further comprise the steps:
A, radio network controller are resolved the frame head of said frame; The information of resolving gained is carried out buffer memory; Calculate cyclic redundancy check value to the end; Judge a said cyclic redundancy check value that calculates whether with said frame in the cyclic redundancy check value that writes down consistent, if then carry out next step;
B, said radio network controller utilize the frame of the said frame of information analysis of said parsing gained.
2. the method for claim 1 is characterized in that, among the said step a, if judge that a cyclic redundancy check value that writes down in a said cyclic redundancy check value that calculates and the said frame is inconsistent, then said frame processing finishes.
3. the method for claim 1 is characterized in that, also comprise among the said step a,
Calculate the body cyclic redundancy check value, judge the said body cyclic redundancy check value that calculates whether with said frame in the body cyclic redundancy check value that writes down consistent, if, execution in step b then; Otherwise said frame processing finishes.
4. method as claimed in claim 3 is characterized in that, utilizes the length that calculates said frame head among the said step a, obtains said cyclic redundancy check value; According to retrodict out the position of body CRC of the total length of said frame, then according to the length of the said frame head that obtains, obtain the starting position of said frame, calculate the body cyclic redundancy check value.
5. the method for claim 1 is characterized in that, resolves the information of gained described in the said step a, comprises data descriptor indication and data number, all carries out buffer memory through the structure of temporary variable array.
6. method as claimed in claim 5 is characterized in that, may further comprise the steps among the said step a,
A1, resolve said frame head, obtain the cyclic redundancy check value, frame number, Connection Frame Number, the number of sub-frames that write down in the said frame, and carry out the congested control of frame according to Transmission Time Interval;
A2, resolve said frame head, obtain mixed automatic retransmission time, carry out exterior ring power control;
A3, judge whether the protocol Data Unit number that the medium access control receives formation is 0, if said frame processing finishes; Otherwise, carry out next step;
A4, the said medium access control that adds up receive the protocol Data Unit number of formation, and obtain said data descriptor indication and said data number successively.
7. method as claimed in claim 6 is characterized in that, comprises among the said step b,
First data descriptor indication of b1, the said frame of processing;
B2, judge whether that the data descriptor indication of said frame is untreated, if carry out next step; Otherwise said protocol layer frame processing finishes;
B3, M+1 data descriptor handling said frame according to M data descriptor indication of said frame are indicated, and said M is a positive integer, execution in step b2.
8. method as claimed in claim 7 is characterized in that, comprises among the said step b1,
From said temporary variable array, extract first data descriptor indication; Extract the pointer that corresponding first said medium access control receives the protocol Data Unit of formation, the function that calling said medium access control reception formation provides is gone into corresponding data descriptor indication formation.
9. method as claimed in claim 7 is characterized in that, may further comprise the steps among the said step b3:
B31, indication obtains element length according to said data descriptor; The data number that the element length that makes M medium access control receive the protocol Data Unit of formation multiply by the protocol Data Unit of M medium access control reception formation adds 1; The value that obtains is added the pointer that M medium access control receives the protocol Data Unit of formation, thereby obtains the pointer that M+1 medium access control receives the protocol Data Unit of formation;
B32, M+1 the medium access control that will obtain receive the data number that pointer, a M+1 data descriptor are indicated, a M+1 medium access control receives the protocol Data Unit of formation of the protocol Data Unit of formation; And the index information of said protocol layer frame in buffering area, submit to the medium access control together and receive the corresponding data descriptor indication of formation queue processing;
B33, said medium access control receive the intact medium access control of queue processing and receive after the protocol Data Unit of formation, just notify said enhanced dedicated transport frame protocol that the protocol Data Unit number of the medium access control reception formation of said frame is subtracted 1.
10. the method for claim 1; It is characterized in that; Before execution in step a, said radio network controller receives the frame of the frame protocol of the said enhanced dedicated transport that transmits the base station, places it in the buffering area; In the time of each the scheduling, from buffering area, take out said frame data.
11. method as claimed in claim 10; It is characterized in that; Before each scheduling, the buffering area of the frame of whole said enhanced dedicated transport frame protocol is scanned, discharge protocol Data Unit number that all medium access controls receive formations and be the data space of 0 said frame.
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| CN101588370B (en) * | 2009-07-02 | 2012-03-28 | 浙江大学 | Analytic method of multirate communication data stream format |
| CN103312398B (en) * | 2012-03-16 | 2018-01-19 | 中兴通讯股份有限公司 | A kind of transmission method and Transmission system and user equipment for strengthening Downlink Control Information |
| US20190044809A1 (en) * | 2017-08-30 | 2019-02-07 | Intel Corporation | Technologies for managing a flexible host interface of a network interface controller |
| CN111147463B (en) * | 2019-12-18 | 2022-04-19 | 北京电子工程总体研究所 | Asynchronous 422 bus-based variable-length frame high-reliability data receiving method |
| CN111858385B (en) * | 2020-08-04 | 2024-02-20 | 深圳市汉云科技有限公司 | SQL database testing method, device, equipment and storage medium |
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| CN1294831A (en) * | 1998-03-24 | 2001-05-09 | 艾利森电话股份有限公司 | Method and appts. for transfering identifier information in telecommunications |
| CN1533067A (en) * | 2003-03-18 | 2004-09-29 | 华为技术有限公司 | Lattice code modulation method and multiple users receiver |
| CN1838577A (en) * | 2005-03-25 | 2006-09-27 | 中国科学技术大学 | Frame division multi-address method in mobile communication |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1294831A (en) * | 1998-03-24 | 2001-05-09 | 艾利森电话股份有限公司 | Method and appts. for transfering identifier information in telecommunications |
| CN1533067A (en) * | 2003-03-18 | 2004-09-29 | 华为技术有限公司 | Lattice code modulation method and multiple users receiver |
| CN1838577A (en) * | 2005-03-25 | 2006-09-27 | 中国科学技术大学 | Frame division multi-address method in mobile communication |
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