CN1812314B - Data with different rate group frame transmitting method and device - Google Patents
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- CN1812314B CN1812314B CN 200510002604 CN200510002604A CN1812314B CN 1812314 B CN1812314 B CN 1812314B CN 200510002604 CN200510002604 CN 200510002604 CN 200510002604 A CN200510002604 A CN 200510002604A CN 1812314 B CN1812314 B CN 1812314B
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Abstract
This invention provides a kind of method and equipment of separating data with different velocity into frames for transmission. The transmitting end separates the data with different velocity into frames. The data is transmitted by the velocity after form the frames. The receiving end checks the received frame data. The data with different velocity are separated and transmitted to corresponding module for processing. This invention can transmit two groups of data with different velocity in one link. Thus, it can decrease transmission cost and increase reliability.
Description
Technical field
The present invention relates to the CDMA mobile communication system field of data transmission, relate in particular to a kind of data with different rate group frame transmitting method and device.
Background technology
In the CDMA2000 mobile communication system, not only need to transmit base band data between base-band digital system and the radio system, also need to transmit the control signal between some base-band digital systems and the radio system, the speed of control signal and base band data is inequality, if they separately transmission separately, need more cable or optical fiber undoubtedly, strengthened the transmission cost of data.If can be the data combination framing of these different rates, according to same speed rates.Arrive after the receiving terminal,, the data of different rates are taken apart, deliver to processing module separately through rate-matched.With the cost that reduces greatly to transmit.
Chinese invention patent prospectus CN86105447A disclosed a kind of " frame forming tech of digital transmission channel " can transmit the data of several groups of different rates.But the data combination framing of particular frame format to different rates used in this invention, and the speed of several groups of data all is that certain relation is arranged, and the signal that is transmitted is limited to the standard signal of digital transmission system: as signals such as DS1, DS2, DS3.For the data of different rates, can not carry out the packet frames transmission so flexibly, and the also remarkable convenience of the method that is adopted.
Summary of the invention
The purpose of this invention is to provide a kind of transmission method and device that flexibly data of different rates is carried out packet frames, it is big to have solved in the prior art transmission cost, the problem that transmission method is not easy.
In order to realize the foregoing invention purpose, the invention provides a kind of transmitting device that the data combination framing of two groups of different rates is sent, wherein the sending part branch comprises: first dual port RAM (103), the control field that storage writes by the first write pointer controller (102); Second dual port RAM (106), the base band data that storage writes by the second write pointer controller (105); First read pointer controller (107) is read the data of two dual port RAMs in order successively, the component frame form; Transmitter sends to the frame of forming in the transmission link;
Receiving unit comprises: receiver (110) receives into frame data from output link; Searcher (111), the link data of reception framing according to predefined frame format, is searched for link data, searches the correct data frame on the link, and finds the frame head position; The 3rd write pointer controller (113), the frame lock index signal of exporting according to searcher writes the control field of data in the 3rd dual port RAM piece (114), and base band data is written in the 4th dual port RAM piece (117); Second reading indicating needle controller (115) is read the control field that receives from the 3rd dual port RAM piece (114); Third reading indicating needle controller (118) is read the base band data that receives from the 4th dual port RAM piece (117).
The present invention also provides a kind of transmission method that the data combination framing of two groups of different rates is sent, wherein forwarding step comprises: (a) initial condition, the first write pointer A (31) points to the original position of a RAMA1 (33), the first write pointer B (32) points to the original position of a RAMB1 (35), and the first read pointer C (37) points to the original position of a RAMA2 (34);
(b) the first write pointer A (31) is written to control field among the one RAMA1 (33) successively, the first write pointer B (32) is written to base band data among the one RAMB1 (35) successively, meanwhile, the first read pointer C (37) begins the data of a RAMA2 (34) to read successively;
(c) after the first read pointer C (37) runs through last data of a RAMA2 (34), jump to the original position of a RAMB2 (36), begin to call over the data of a RAMB2 (36);
(d) the first write pointer A (31) has write y1 control word, waits for;
(e) the first write pointer B (32) writes a RAMB1 (35) to last data, the first read pointer C (37) also just in time runs through last data of a RAMB2 (36) simultaneously, such first read pointer C (37) has just sent complete frame data, and that a RAMA1 (33) and a RAMB1 (35) have stored frame data etc. is to be sent;
(f) the first read pointer C (37) runs through after the data of a RAMB2 (36), begin to read first data of a RAMA1 (33), send the next frame data, simultaneously, the first write pointer A (31) has write a RAMA1 (33) afterwards, begin to write first data of a RAMA2 (34), the first write pointer B (32) begins to write first data of a RAMB2 (36);
(g) after the first read pointer C (37) runs through last data of a RAMA1 (33), jump to the original position of a RAMB1 (35), begin to call over the data of a RAMB1 (35);
(h) the first write pointer A (31) has write y1 the control word of a RAMA2 (34), waits for;
(I) the first write pointer B (32) writes a RAMB2 (36) to last data, the first read pointer C (37) also just in time runs through last data of a RAMB1 (35) simultaneously, such first read pointer C (37) has just sent complete frame data, and that a RAMA2 (34) and a RAMB2 (36) have stored frame data etc. is to be sent;
(j) finish after the top process, the read-write pointer is got back to initial position again, the read-write operation that constantly circulates, and data continuously send on the link from transmitting terminal with complete frame structure form;
Receiving step comprises: (k) when searcher locking link, and the data on the indication link are first data of a frame, the second write pointer A (51) points to the original position of the 2nd RAMA1 (53), second reading pointer B (52) points to the original position of the 2nd RAMA2 (54), and second reading pointer C (55) points to the original position of the 2nd RAMB2 (57);
(1) second write pointer A (51) writes control field among the 2nd RAMA1 (53) successively, second reading pointer B (52) reads control field successively since first data of the 2nd RAMA2 (54), and second reading pointer C (55) reads base band data successively from the 2nd RAMB2 (57);
(m) the second write pointer A (51) has write the 2nd RAMA1 (53) afterwards, jumps to the original position of the 2nd RAMB1 (56), and beginning writes the 2nd RAMB1 (56) to base band data successively;
(n) when the second write pointer A (51) is written to the 2nd RAMB1 (56) fully to base band data, second reading pointer B (52) has run through the control field of the 2nd RAMA2 (54), second reading pointer C (55) has run through the base band data of the 2nd RAMB2 (57), read pointer is read away the control field of a frame and base band data, and write pointer is deposited into new frame data in the dual port RAM;
(o) finish after the read-write of a frame, the second write pointer A (51) points to the original position of the 2nd RAMA2 (54), and second reading pointer B (52) points to the original position of the 2nd RAMA1 (53), and second reading pointer C (55) points to the original position of the 2nd RAMB1 (56);
(p) the second write pointer A (51) has write the 2nd RAMA2 (54) afterwards, jumps to the original position of the 2nd RAMB2 (57), and beginning writes the 2nd RAMB2 (57) to base band data successively;
(q) when the second write pointer A (51) is written to the 2nd RAMB2 (57) fully to base band data, second reading pointer B (52) has run through the control field of the 2nd RAMA1 (53), second reading pointer C (55) has run through the base band data of the 2nd RAMB1 (56), finishes the read-write of frame data;
(r) the read-write pointer is got back to initial position again, and the read-write pointer constantly moves, and the data that receive on the link are constantly splitted into control field and base band data, and the module of delivering to separately goes to handle.
Adopt the method for the invention and device, can on a link, transmit the data of two groups of different rates, transmit with two links of use and compare, reduce transmission cost, increase reliability.
Description of drawings
Figure 1 shows that the structural representation of packet frames transmitting device;
Figure 2 shows that the schematic diagram of data frame structure;
Figure 3 shows that framing rate module coupling schematic diagram;
Figure 4 shows that frame search module flow chart;
Figure 5 shows that and tear frame module rate-matched schematic diagram open.
Embodiment
Describe operation principle of the present invention in detail below in conjunction with accompanying drawing and enforcement, will more help to be well understood to characteristic of the present invention, purpose.
Fig. 1 has provided the structural representation of this device.The course of work of transfer of data is:
(1) control field 101 is written in the first dual port RAM piece 103 by the first write pointer controller 102;
(2) meanwhile, base band data 104 is written in the second dual port RAM piece 106 by the second write pointer controller 105;
(3) first read pointer controllers 107 are read the data of two dual port RAM pieces in order successively, form certain frame format, send to from transmitter 108 in the transmission link 109;
(4) receiver 110 receives into frame data from output link 109, delivers to searcher 111;
(5) searcher 111 is searched for link data according to predefined frame format.Search the correct data frame on the link, and find the frame head position;
(6) the 3rd write pointer controllers 113 write the control field of data in the 3rd dual port RAM piece 114 according to the frame lock index signal 112 of searcher output, and base band data is written in the 4th dual port RAM piece 117;
(7) second reading indicating needle controller 115 is read the data of the 3rd dual port RAM piece 114, the control field 116 that Here it is receives;
(8) third reading indicating needle controller 118 is read the data of the 4th dual port RAM piece 117, the base band data 119 that Here it is receives.
The structural representation of Fig. 2 complete frame data when having provided transfer of data.The data of a complete frame can comprise the data of many group different rates: data 1, data 2, data 3 ... data n.
Wherein first word of data 1 is the frame head sign, as the start bit of frame head.
The depth y 1 of each data, y2, y3, yn are decided by the transmission rate of each data, and physical relationship can illustrate referring to Fig. 3.
Fig. 3 has provided framing module work schematic diagram. and the basic functional principle of framing module is that control field and base band data are written to dual port RAM respectively. the word that decision takies in a frame according to the speed of control field and base band data, and the speed of read pointer. read pointer is read the control field in the frame earlier according to this speed, and then base band data read, so just will put in order frame data sends according to form. and the framing module is wanted operate as normal, and key will guarantee that write pointer and read pointer are according to certain speed, certain relational operation.
Bump for fear of the read-write pointer, every dual port RAM all divides for RAM1 and RAM2 two parts, and when write pointer carried out write operation at RAM1, read pointer carried out read operation at RAM2.
First dual port RAM 103 and second dual port RAM 106 are respectively applied for storage control field part and base band data part, as shown in Figure 3.First dual port RAM 103 of storage control field is divided into a RAMA1 33 and a RAMA2 34 two parts; Second dual port RAM 106 of storage base band data is divided into a RAMB1 35 and a RAMB2 36 two parts.
The first write pointer A 31 is specifically designed to and writes control field, and the first write pointer B 32 is specifically designed to and writes base band data.37 of the first read pointer C are used for whole frame data are read.
The course of work that the read-write pointer is detailed is as follows:
(1) initial condition, the position of write pointer and read pointer as shown in Figure 3, the first write pointer A 31 points to the original position of a RAMA1 33, and the first write pointer B 32 points to the original position of a RAMB1 35, and the first read pointer C 37 points to the original position of a RAMA2 34.
(2) first write pointer A 31 begin control field is written to the RAMA1 33 successively from first word, and the first write pointer B 32 begins base band data is written to the RAMB1 35 successively from first word.Meanwhile, the first read pointer C 37 begins the data of a RAMA2 34 to read successively.
After (3) first read pointer C 37 run through last word of a RAMA234, jump to the original position of a RAMB2 36, begin to call over the data of a RAMB2 36.
(4) first write pointer A 31 have write y1 control word, wait for.
(5) first write pointer B 32 write a RAMB1 35 to last word, and the first read pointer C 37 also just in time runs through last word of a RAMB2 36 simultaneously.Such first read pointer C 37 has just sent complete frame data, and that a RAMA1 33 and a RAMB1 35 have stored frame data etc. is to be sent.
(6) first read pointer C 37 run through after the data of a RAMB2 36, begin to read first word of a RAMA1 33, send the next frame data.Simultaneously, the first write pointer A 31 has write after the RAMA1 33, begins to write first word of a RAMA234.The first write pointer B 32 begins to write first word of a RAMB2 36.
(7) similar with prior process, after the first read pointer C 37 runs through last word of a RAMA1 33, jump to the original position of a RAMB1 35, begin to call over the data of a RAMB1 35.
(8) first write pointer A 31 have write y1 the control word of a RAMA2 34, wait for.
(9) first write pointer B 32 write a RAMB2 36 to last word, and the first read pointer C 37 also just in time runs through last word of a RAMB1 35 simultaneously.Such first read pointer C 37 has just sent complete frame data, and that a RAMA2 34 and a RAMB2 36 have stored frame data etc. is to be sent.
(10) finish after the top process, the read-write pointer is got back to initial position again.By the read-write operation of so continuous circulation, data continuously send on the link from transmitting terminal with complete frame structure form.
Three pointers will be worked good, and must meet some requirements.The speed of supposing write pointer A is a, and the speed of write pointer B is b, and the speed of read pointer C is c.Must satisfy following relationship.
The time that write pointer B has write base band data must equal the time that read pointer is read whole frame, promptly
Write pointer A has write the time that time of control word must write smaller or equal to base band data, promptly
Fig. 4 has provided the flow chart of search module.Whether search module wants the frame head sign and the check digit of the data that continuous verification receives correct.In the incipient stage of search procedure, if it is all correct to search the frame head sign and the check digit of multiframe data continuously, then think the link data locking, it is effective to put the frame lock index signal, provides the frame head marking signal simultaneously.After frame lock, receive wrong frame head sign or check digit again, then, restart search procedure the frame counter zero clearing.The concrete course of work is as follows:
(1) in initial condition, frame counter is zero.Module receives data, judges whether it is frame head sign 41.If not, the frame counter zero clearing receives next data 42, judges whether it is frame head sign 41 again.
(2), then receive (n+m) individual data more continuously, and carry out verification 43 if receiving data is frame head signs.
(3) judge check results whether correct 43.If the check results mistake, then frame counter zero clearing receives next data 42.
(4), then show correctly to receive frame data if check results is correct.Judge whether the present frame counter arrives set point x 45.
(5) if frame counter no show set point adds 1 to frame counter, receive next data 46.If frame counter arrives set point, show to search (x+1) frame correct data continuously that it is effective to put the frame lock index signal, and provides next frame head sign 47.
(6) continue to receive next data 48.
Fig. 5 has provided and has torn frame work schematic diagram open.The basic functional principle of tearing frame open is: according to the index signal of search module, write pointer is written to the data different piece in each dual port RAM, read pointer is read control field in the content frame and base band data respectively then, so just two parts content of data is taken apart.Take the data that receive accurately apart, key will guarantee that write pointer and read pointer are according to certain speed, certain relational operation.
Similar with the framing process, tear frame open and used two dual port RAMs, store control field and base band data respectively.Bump for fear of the read-write pointer, every dual port RAM all divides for RAM1 and RAM2 two parts, and when write pointer carried out write operation at RAM1, read pointer carried out read operation at RAM2.
The detailed operation process of tearing frame module read-write pointer open is:
(1) when search module locking link, and the data on the indication link are first data of a frame, the second write pointer A51 points to the original position of the 2nd RAMA1 53, second reading pointer B 52 points to the original position of the 2nd RAMA2 54, and second reading pointer C 55 points to the original position of the 2nd RAMB2 57.
(2) second write pointer A 51 write control field among the 2nd RAMA1 53 successively.Second reading pointer B 52 reads control field successively since first word of the 2nd RAMA2 54, and second reading pointer C 55 reads base band data successively from the 2nd RAMB2 57.
(3) second write pointer A 51 have write after the 2nd RAMA1 53, jump to the original position of the 2nd RAMB1 56, and beginning writes the 2nd RAMB1 56 to base band data successively.
(4) when the second write pointer A 51 is written to the 2nd RAMB1 56 fully to base band data, second reading pointer B 52 has run through the control field of the 2nd RAMA2 54, and second reading pointer C 55 has run through the base band data of the 2nd RAMB2 57.Like this, read pointer is read away the control field of a frame and base band data, and write pointer is deposited into new frame data in the dual port RAM.
(5) finish after the read-write of a frame, the second write pointer A 51 points to the original position of the 2nd RAMA2 54, and second reading pointer B 52 points to the original position of the 2nd RAMA1 53, and second reading pointer C 55 points to the original position of the 2nd RAMB1 56.
(6) second write pointer A 51 have write after the 2nd RAMA2 54, jump to the original position of the 2nd RAMB2 57, and beginning writes the 2nd RAMB2 57 to base band data successively.
(7) when the second write pointer A 51 is written to the 2nd RAMB2 57 fully to base band data, second reading pointer B 52 has run through the control field of the 2nd RAMA1 53, and second reading pointer C 55 has run through the base band data of the 2nd RAMB1 56.Finished the read-write of frame data so again.
(8) the read-write pointer is got back to initial position again.According to top process, the read-write pointer constantly moves, and just can constantly split into control field and base band data to the data that receive on the link, and the module of delivering to separately goes to handle.
Tearing frame module open will take data apart accurately, and three pointers must satisfy certain speed relation.The speed of write pointer A 51 is a, and the speed of read pointer B 52 is b, and the speed of read pointer C 55 is c, and they should satisfy following relation: the time that write pointer A has write a complete frame equals the time that read pointer B runs through base band data, promptly
The time that read pointer B runs through control word runs through time of base band data smaller or equal to read pointer C, promptly
Through above-mentioned labor as can be seen, when the different data of two kinds of speed of transmission, the invention provides a kind of simple and reliable method, the different data combination framing of speed, with same speed transmission.Reduced to send required cable or optical fiber, simplified system.Can be widely used in transmitting the system of two kinds of speed datas, in addition, apparatus of the present invention can be expanded with in the system that is applied to multiple speed data, in the device of expansion, transmission or receiving system can comprise 2 above twoport ram, these twoports ram is identical, but the data that are used for storing different rates respectively, and a part is used to store control field, a part and is used to store the data that base band data, a part can be used to store other speed; The twoport ram quantity correspondence that dispensing device and receiving device comprise; Corresponding 1 indicating needle controller of each twoport ram.
Claims (7)
1. the packet frames transmitting device of a data with different rate is characterized in that:
The sending part branch comprises: first dual port RAM (103), the control field that storage writes by the first write pointer controller (102); Second dual port RAM (106), the base band data that storage writes by the second write pointer controller (105); First read pointer controller (107) is read the data of two dual port RAMs in order successively, the component frame form; Transmitter sends to the frame of forming in the transmission link;
Receiving unit comprises: receiver (110) receives into frame data from output link; Searcher (111), the link data of reception framing according to predefined frame format, is searched for link data, searches the correct data frame on the link, and finds the frame head position; The 3rd write pointer controller (113), the frame lock index signal of exporting according to searcher writes the control field of data in the 3rd dual port RAM piece (114), and base band data is written in the 4th dual port RAM piece (117); Second reading indicating needle controller (115) is read the control field that receives from the 3rd dual port RAM piece (114); Third reading indicating needle controller (118) is read the base band data that receives from the 4th dual port RAM piece (117).
2. device according to claim 1, it is characterized in that: first dual port RAM (103) of storage control field is divided into a RAMA1 (33) and a RAMA2 (34) two parts, and second dual port RAM (106) of storage base band data is divided into a RAMB1 (35) and a RAMB2 (36) two parts.
3. device according to claim 1, it is characterized in that: the 3rd dual port RAM (114) of storage control field is divided into the 2nd RAMA1 (53) and the 2nd RAMA2 (54) two parts, and the 4th dual port RAM (117) of storage base band data is divided into the 2nd RAMB1 (56) and the 2nd RAMB2 (57) two parts.
4. the group frame transmitting method of a data with different rate is characterized in that, forwarding step comprises:
(a) initial condition, the first write pointer A (31) points to the original position of a RAMA1 (33), and the first write pointer B (32) points to the original position of a RAMB1 (35), and the first read pointer C (37) points to the original position of a RAMA2 (34);
(b) the first write pointer A (31) is written to control field among the one RAMA1 (33) successively, the first write pointer B (32) is written to base band data among the one RAMB1 (35) successively, meanwhile, the first read pointer C (37) begins the data of a RAMA2 (34) to read successively;
(c) after the first read pointer C (37) runs through last data of a RAMA2 (34), jump to the original position of a RAMB2 (36), begin to call over the data of a RAMB2 (36);
(d) the first write pointer A (31) has write y1 control word, waits for;
(e) the first write pointer B (32) writes a RAMB1 (35) to last data, the first read pointer C (37) also just in time runs through last data of a RAMB2 (36) simultaneously, such first read pointer C (37) has just sent complete frame data, and that a RAMA1 (33) and a RAMB1 (35) have stored frame data etc. is to be sent;
(f) the first read pointer C (37) runs through after the data of a RAMB2 (36), begins to read a RAMA1
(33) first data send the next frame data, and simultaneously, the first write pointer A (31) has write a RAMA1 (33) afterwards, begins to write first data of a RAMA2 (34), and the first write pointer B (32) begins to write first data of a RAMB2 (36);
(g) after the first read pointer C (37) runs through last data of a RAMA1 (33), jump to the original position of a RAMB1 (35), begin to call over the data of a RAMB1 (35);
(h) the first write pointer A (31) has write y1 the control word of a RAMA2 (34), waits for;
(I) the first write pointer B (32) writes a RAMB2 (36) to last data, the first read pointer C (37) also just in time runs through last data of a RAMB1 (35) simultaneously, such first read pointer C (37) has just sent complete frame data, and that a RAMA2 (34) and a RAMB2 (36) have stored frame data etc. is to be sent;
(j) finish after the top process, the read-write pointer is got back to initial position again, the read-write operation that constantly circulates, and data continuously send on the link from transmitting terminal with complete frame structure form;
Receiving step comprises: (k) when searcher locking link, and the data on the indication link are first data of a frame, the second write pointer A (51) points to the original position of the 2nd RAMA1 (53), second reading pointer B (52) points to the original position of the 2nd RAMA2 (54), and second reading pointer C (55) points to the original position of the 2nd RAMB2 (57);
(l) the second write pointer A (51) writes control field among the 2nd RAMA1 (53) successively, second reading pointer B (52) reads control field successively since first data of the 2nd RAMA2 (54), and second reading pointer C (55) reads base band data successively from the 2nd RAMB2 (57);
(m) the second write pointer A (51) has write the 2nd RAMA1 (53) afterwards, jumps to the original position of the 2nd RAMB1 (56), and beginning writes the 2nd RAMB1 (56) to base band data successively;
(n) when the second write pointer A (51) is written to the 2nd RAMB1 (56) fully to base band data, second reading pointer B (52) has run through the control field of the 2nd RAMA2 (54), second reading pointer C (55) has run through the base band data of the 2nd RAMB2 (57), read pointer is read away the control field of a frame and base band data, and write pointer is deposited into new frame data in the dual port RAM;
(o) finish after the read-write of a frame, the second write pointer A (51) points to the original position of the 2nd RAMA2 (54), and second reading pointer B (52) points to the original position of the 2nd RAMA1 (53), and second reading pointer C (55) points to the original position of the 2nd RAMB1 (56);
(p) the second write pointer A (51) has write the 2nd RAMA2 (54) afterwards, jumps to the original position of the 2nd RAMB2 (57), and beginning writes the 2nd RAMB2 (57) to base band data successively;
(q) when the second write pointer A (51) is written to the 2nd RAMB2 (57) fully to base band data, second reading pointer B (52) has run through the control field of the 2nd RAMA1 (53), second reading pointer C (55) has run through the base band data of the 2nd RAMB1 (56), finishes the read-write of frame data;
(r) the read-write pointer is got back to initial position again, and the read-write pointer constantly moves, and the data that receive on the link are constantly splitted into control field and base band data, and the module of delivering to separately goes to handle.
5. method according to claim 4, it is characterized in that: the time that the first write pointer B (32) has write base band data in the forwarding step must equal the time that the first read pointer C (37) reads whole frame, and the first write pointer A (31) has write the time that time of control word must write smaller or equal to base band data.
6. method according to claim 4, it is characterized in that: the time that the second write pointer A (51) has write a complete frame in the receiving step equals the time that second reading pointer B (52) runs through base band data, and the time that second reading pointer B (52) runs through control word runs through the time of base band data smaller or equal to second reading pointer C (55).
7. method according to claim 4 is characterized in that, the process of search frame specifically may further comprise the steps:
(s) in initial condition, frame counter is zero, receives data, judges whether it is the frame head sign, if not, the frame counter zero clearing receives next data, judges whether it is the frame head sign again;
(t), then receive (n+m) individual data more continuously, and carry out verification if receiving data is frame head signs;
(u) judge whether check results is correct, if the check results mistake, then frame counter zero clearing receives next data;
If (v) check results is correct, then shows correctly to receive frame data, judges whether the present frame counter arrives set point x;
(w) if frame counter no show set point adds 1 to frame counter, receive next data, if frame counter arrives set point, show to search (x+1) frame correct data continuously that it is effective to put the frame lock index signal, and provides next frame head sign;
(x) continue to receive next data.
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| CN 200510002604 CN1812314B (en) | 2005-01-24 | 2005-01-24 | Data with different rate group frame transmitting method and device |
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| CN 200510002604 CN1812314B (en) | 2005-01-24 | 2005-01-24 | Data with different rate group frame transmitting method and device |
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| CN108319557B (en) * | 2017-12-15 | 2022-02-08 | 天津津航计算技术研究所 | Data buffer with data retransmission function and read-write method thereof |
| CN111158588B (en) * | 2019-12-12 | 2021-04-06 | 北京邮电大学 | Double-rate control method and system |
| CN112241328B (en) * | 2020-09-10 | 2024-01-23 | 长沙市到家悠享网络科技有限公司 | Data processing method, device and system |
| CN113934133B (en) * | 2021-09-28 | 2024-05-31 | 国网电力科学研究院有限公司 | Control command confirmation method and system suitable for security control system |
| CN114896184B (en) * | 2022-05-24 | 2023-07-25 | 西安微电子技术研究所 | DMA controller FPGA and solid-state memory based on same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1243369A (en) * | 1998-06-22 | 2000-02-02 | 诺基亚流动电话有限公司 | Signal coding method and data transmission system in data transmission system |
| CN1418419A (en) * | 2000-01-20 | 2003-05-14 | 北方电讯网络有限公司 | Hybrid ARQ schemes with soft combining in variable rate packet data transmission |
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2005
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1243369A (en) * | 1998-06-22 | 2000-02-02 | 诺基亚流动电话有限公司 | Signal coding method and data transmission system in data transmission system |
| CN1418419A (en) * | 2000-01-20 | 2003-05-14 | 北方电讯网络有限公司 | Hybrid ARQ schemes with soft combining in variable rate packet data transmission |
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| CN1812314A (en) | 2006-08-02 |
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