CN102932086B - Data time division transmission and system - Google Patents
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Abstract
The present invention relates to a kind of data time division transmission, including, in data source storage to buffer, and according to the state information updating flag status register of data source；Current time slots configuration information, control counter is selected to add up from business configuration register according to current time slots number, the data that the count value and current time slots configuration information according to the counter are read in buffer are transmitted；Effective time interval according to data header signal judges output time slot frame header position, and triggers time slot counter；When data frame head is effective, the value according to time slot counter chooses current time slots configuration information, and flip-flop number is added up, and be saved in the data in buffer, and recover data source by count value and current time slots configuration information according to the counter.The invention further relates to a kind of data time division transmission system.Using technical scheme, it has simple structure, it is easy to control, the advantages of applicability is good.
Description
Technical field
The present invention relates to field of data transmission, especially, it is related to a kind of data time division transmission, data time-division sender
Method, data time-division method of reseptance, and data time division transmission system, data time-division dispensing device, data time-division reception device.
Background technology
Being directed to one or more fixed type data source current transmission technology more.As optical transport frame transmit when, it is necessary to
The treatment of complexity is carried out to the overhead data in optical transport frame.For different application environment, the concrete processing procedure of frame overhead has
Very big difference, its conventional processing mode is, using CPU, the asynchronous reading overhead data of register, to complete overhead processing logical AND
Data exchange between chip.
In transmission technique field, particularly transmit mixed service needs real-time Transmission multiple data source often.Even if adopting
With serioparallel exchange (such as serdes) technology of high speed, it is also unsuitable for transmitting such data, because the exclusive side of data wire
Formula causes to be needed when data source interval time is any larger memory space or the high transmission speed could complete transmission.
The content of the invention
Present invention solves the technical problem that there are provided a kind of data time division transmission, data time-division sending method,
Data time-division method of reseptance, and data time division transmission system, data time-division dispensing device, data time-division reception device.
The invention provides a kind of data time division transmission, including,
Data source is stored in buffer, and according to the state information updating flag status register of data source；According to work as
Preceding timeslot number selects current time slots configuration information from business configuration register, in the corresponding mark of the current time slots configuration information
When the flag bit of will status register is effective, control counter adds up, count value and the current time slots configuration according to the counter
The data that information is read in buffer are transmitted；
Effective time interval according to data header signal judges output time slot frame header position, and triggers time slot counter；
When data frame head is effective, the value according to time slot counter chooses current time slots configuration information, and flip-flop number is added up, root
According to the count value and current time slots configuration information of the counter, the data are saved in buffer, and recover data source.
Further, before data source storage to buffer, also include,
It is determined that the class of business to be configured, and determine the data source to be transmitted of each time slot.
In the above method, wherein, the data type of the business configuration register storage time slots configuration, length is log2m*
(n-1), m is the maximum data source number to be transmitted, and n is the timeslot number that a slot cycle is included.
In the above method, wherein, the timeslot number of described certain data source distribution is at least [(Ld/ (Td/Tt))/p]+1,
Wherein, data wire is a width of p, and Td is the transmission cycle of the data type, and Ld is the data volume for needing transmission, and Tt is time slot week
Phase.
Further, the data header signal is used for transmission time slot header signal and data source frame head signal.
Further, it is described that output time slot frame header position is judged according to the effective time of header signal interval, and trigger time slot
Counter specifically,
According to header signal and with road clock, the frame header position of slot cycle is found out, and time slot is triggered by the frame header position
Counter, makes timeslot number consistent with the timeslot number for sending.
Present invention also offers a kind of data time-division sending method, it is characterised in that including,
Data source is stored in buffer, and according to the state information updating flag status register of data source；According to work as
Preceding timeslot number selects current time slots configuration information from business configuration register, and control counter adds up, according to the counter
The data that count value and current time slots configuration information are read in buffer are transmitted.
Present invention also offers a kind of data time-division method of reseptance, it is characterised in that including,
Effective time interval according to header signal judges output time slot frame header position, and triggers time slot counter；In data
When frame head is effective, the value according to time slot counter chooses current time slots configuration information, and flip-flop number is added up, according to this
The count value and current time slots configuration information of counter, the data are saved in buffer, and recover data source.
Meanwhile, a kind of data time division transmission system of the invention, it is characterised in that including,
Sending module, for data source to be stored in buffer, and according to the state information updating mark shape of data source
State register；Current time slots configuration information, control counter is selected to add up from business configuration register according to current time slots number,
The data that count value and current time slots configuration information according to the counter are read in buffer are transmitted；
Receiver module, for judging output time slot frame header position according to the effective time of header signal interval, and triggers time slot
Counter；When data frame head is effective, the value according to time slot counter chooses current time slots configuration information, and flip-flop number enters
Row is cumulative, and be saved in the data in buffer, and recover by count value and current time slots configuration information according to the counter
Go out data source；
Business configuration register, for storage time slots configuration information.
Further, the business configuration register, for storage time slots configuration information specifically,
The business configuration register, the data type for storing each time slot configuration, its length is log2m*(n-
1), m is data source number, and n is the timeslot number that a slot cycle is included, more than or equal to the data source number of maximum transmitted；With
And for determining the number of time slots a of the data distribution at least [(Ld/ (Td/Tt))/p]+1, wherein data wire is a width of p,
The transmission cycle Td of the root data type and need transmission data volume Ld and slot cycle Tt size.
Present invention also offers a kind of data time-division dispensing device, including,
Sending module, for data source to be stored in buffer, and according to the state information updating mark shape of data source
State register；Current time slots configuration information, control counter is selected to add up from business configuration register according to current time slots number,
The data that count value and current time slots configuration information according to the counter are read in buffer are transmitted.
Present invention also offers a kind of data time-division reception device, including,
Receiver module, for judging output time slot frame header position according to the effective time of header signal interval, and triggers time slot
Counter；When data frame head is effective, the value according to time slot counter chooses current time slots configuration information, and flip-flop number enters
Row is cumulative, and be saved in the data in buffer, and recover by count value and current time slots configuration information according to the counter
Go out data source.
Compared to the versatility bus or high-speed serial bus that can complete the function, it has knot to embodiments of the invention
Structure is simple, it is easy to control, the advantages of applicability is good, each time slot can separate configurations, according to data source needs in itself
The data volume and rate requirement of transmission configure one or more time slots, both can be with one data source of a slot transmission, it is also possible to
All of time slot transmits a data source altogether.The efficient multiplexing of frame head fp signals, reduces input and output PIN, logic scale
It is smaller.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes a part of the invention, this hair
Bright schematic description and description does not constitute inappropriate limitation of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is a kind of data time division transmission flow chart of the invention；
Fig. 2 is time division transmission line signal and its timing diagram；
Fig. 3 is a kind of data time division transmission embodiment flow chart of the invention；
Fig. 4 is a kind of data time division transmission system structure chart of the invention.
Specific embodiment
In order that the technical problems to be solved by the invention, technical scheme and beneficial effect are clearer, clear, below tie
Drawings and Examples are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
It is used to explain the present invention, is not intended to limit the present invention.
As shown in figure 1, be a kind of data time division transmission flow chart of the invention, including,
Step S101, the rule specified according to user arrives data source storage the corresponding unit of buffer data buffer
In；The state for being arrived according to the data source simultaneously updates flag status register Flag_reg；Current time slots ts_num obtains employment
Current time slots configuration information ts_cu is selected in business configuration register, if the flag bit of the corresponding Flag_reg of the ts_cur has
Imitate, then the cumulative u (u ＞=1) of the corresponding counter count_ts_cur of ts_cur in counter group, and according to count_ts_cur
Value reads the corresponding units of buffer, and the numerical value that will be read selects highway width p data is activation every time；
Step S102, the effective time interval according to data frame frame head fp signals judges output time slot frame header position, and triggers
Time slot counter；When data frame head fp is effective, the value according to time slot counter chooses the configuration information ts_ of current time slots
Count, the cumulative u (u ＞=1) of corresponding counter in chosen logical triggering counter group；According to the Counter Value and currently
Current data, is saved in the corresponding unit in buffer data buffer by time slot configuration information ts_count, until receiving foot
Enough cell datas, you can recover former data.
In the above-mentioned methods, business configuration register stores the data type of each time slot configuration, and its length is：log2m*
(n-1), m is the maximum data source number to be transmitted, and n is the timeslot number that a slot cycle is included；It is false during the register configuration
If data line width is p, the data volume Ld's and slot cycle Tt of transmission cycle Td and needs transmission according to the data type
Size, determines that number of time slots a at least [(Ld/ (Td/Tt))/p]+1 (formula 1) of data source distribution is individual, and a is less than or equal to n,
The position of a time slot can arbitrarily be distributed, and without limitation, so be beneficial to when same data source speed increases or reduces,
Corresponding number of time slots is increasedd or decreased, time slot configuration and the transmission in remainder data source is not interfered with.
The holding wire for carrying out data time division transmission needs according to the method described above will at least include：Data wire p, clock line 1
Position, 1, header signal line, its sequential relationship and its refer to shown in Fig. 2 with associating for timeslot number business configuration register.Diagram
In be according to service configuration information, data source datas_i, datas_j, datas_r when separated time upload defeated when take when
Gap.It is used for synchronized data signal data_bus and header signal fp_bus, p expense of the signal deciding with road clock clk_bus
Line transmits the speed of data.
Header signal fp_bus is used for transmission time slot header signal and all of data source header signal.Due to by time slot point
Timing, each time slot corresponds to a fixed data, therefore same header signal line can be represented not when different time-gap is effective
With the frame head of data source.It is assumed that the transmission cycle of data source and a slot cycle difference, then represented by increasing a time slot
The frame header position of slot cycle, time slot data wire data_bus does not transmit data, and data source frame head and time slot frame head pass through one
Root header signal fp_bus is transmitted, and output time slot frame head and data frame head can be distinguished by continuously slipping in receiving side；
During header signal fp_bus transmission frame head information, in addition to being fixed effectively at fixed time slot preamble slots, every
Individual data type starts the 1st slot cycle of transmission effectively, ts_3, ts_n place such as in figure be expression data source datas_j,
Datas_r starts transmission in the time slot.After a data type delivery is complete, the time slot that it takes can be in idle condition,
Such as the 1st ts_2 slot transmission in Fig. 2 is datas_i, and during to the 2nd ts_2 time slot, data source datas_i has been passed
It is totally lost complete, the time slot is set to idle condition null.
As shown in figure 3, be a kind of data time division transmission embodiment flow chart of the invention, according to the above-mentioned data time-division
Transmission method, by increasing m values, increases the maximum data source number to be transmitted, and adjustment n values can be adjusted accordingly in each slot cycle
The data volume in transmission individual data source, increasing p value can increase the data volume of single time slot transmission, when increase clk_bus is single
The gap cycle reduces, and can increase the expense line transmission capacity of same m, n, p value.The relation of m, n, p, clk_bus and data source, also may be used
With reference to the determination process of these parameters in following 100G embodiments.
In the present embodiment, to realize maximum 100G mixed lights transmission services, as a example by 50 transmission of overhead data of frame
Explanation.The composition of 100G light business can be OTU4, OTU3, OTU2, OTU1, ODU0 individually or mixed service is constituted.This example is adopted
System clock 672M is used, 84M is used with road clock clk_bus, 8bit is taken for ease of operation bit wide p.By maximum data source number m
It is 80 road ODU0, number of time slots n is greater than equal to m, it is known that n minimums should be 80 integral multiple；If data source is the maximum speed in 1 road
During rate business OTU4, the overhead data update cycle is 97 84M cycles, if n is taken more than or equal to 1 times 80, minimum 160,
OTU4 data can not be in time transmitted, therefore 1 times can only be taken, it is considered to which first time slot of slot cycle can not be used for transmitting data,
Here minimum value 81 is taken.When minimum-rate business ODU0 is transmitted, a slot transmission is distributed according to most slow each slot cycle
The overhead data of ODU0, then at most need 81* (50+1) the individual cycle all the way, less than 7760 84M clocks of data update cycle,
Meet the transmission requirement of ODU0 expenses.
The class of business to be configured is determined first, determines the data source to be transmitted of each time slot.Such as configure 1 road OTU3,2 tunnels
OTU2,3 road OTU1,7 road ODU0, constitute the optical transport business of 76G, and every kind of business will be in correspondence business per 50 overhead bytes of frame
The μ s of frame period 3.035,12.191 μ s, 48.971 μ s, be transmitted in 98.354 μ s, every kind of data type need distribution 32,
8th, 2,1 time slot, then 13 data sources need to be randomly assigned 32,8,8,2,2,2,1,1,1,1,1,1,1 time slot, distribution
There is no any orbution between 61 time slots, any one in 80 time slots can be taken, such as the business configuration of Fig. 3 is deposited
Shown in device 32, wherein the 1st of the time slot configuration key species of digital expression business, the 2nd numeral represents the type industry
Which data source of business, the 3rd numeral represents the number of time slots of distribution, and null represents that the time slot is not previously allocated；
Sending module TX puts the Status Flag register Flag_reg's of 80 according to the received number of data source 00
Corresponding positions effectively, if the data source types of the configurations of current time slots ts_cur 04 and effective flag bit instruction is same
Individual data source, that is, trigger the corresponding counter 03 of the data source and count, and the number is read from buffer 02 according to the count value
According to source data, chosen logical zero 5 selects p data is activation.
If such as current time slots ts_cur 5, data source 2：The data receiver of Odu0_1 front two row 20 overhead datas, then
Current time slots do not start to send the data source data, if it is current it is received be over before 3 row, 37 overhead bytes, when current
Gap sends the data source, at this moment if the value of count_1 be that the 1st of data source Odu0_1 opens to represent send if " 1 "
Pin byte, it is effective that header signal fp_bus puts a slot cycle.If current time slots ts_cur is 1, then any data are not transmitted
Source data, it is effective that header signal unconditionally puts a cycle.
Receiver module RX according to frame head judge module judget 18 according to header signal fp and with road clock clk, when finding out
The frame header position in gap cycle, by location triggered time slot counter count_ts11, makes timeslot number count_ts and sending module
Timeslot number ts_num it is consistent；Then according to the value selection current time slots configuration service information ts_count 12 being somebody's turn to do, with reference to frame head
The corresponding counter 13 of flag information Flag_reg2 selections current time slots of fp signals triggering；Current data is saved in caching
Corresponding unit in device data buffer 15, sampled data signal data and its storage are judged whether finally according to the count value
Address, recovers data source 17.
When such as count_ts is 13, effectively, that represent the slot transmission is the 1st of OTU3_1 data sources 00 to header signal
Overhead byte, the 16th of Flag_reg2 is set to effectively, and then flip-flop number count_16 is counted when ts_count is equal to 16
Number Jia 1, when the count value is 50, makes the 16th of Flag_reg2 to fail, while the counter that resets, terminates notebook data source
Reception；If count_ts is 13, header signal is invalid, and the 16th of Flga_reg2 invalid, then show current time slots
Transmission line does not transmit data；If count_ts is 71, then it represents that the time slot is configured without business, and transmission line is in the time slot
Invalid.
As shown in figure 4, present invention also offers a kind of data time division transmission system, including,
Sending module, for data source to be stored in buffer, and according to the state information updating mark shape of data source
State register；Current time slots configuration information, control counter is selected to add up from business configuration register according to current time slots number,
The data that count value and current time slots configuration information according to the counter are read in buffer are transmitted；
Receiver module, for judging output time slot frame header position according to the effective time of header signal interval, and triggers time slot
Counter；When data frame head is effective, the value according to time slot counter chooses current time slots configuration information, and flip-flop number enters
Row is cumulative, and be saved in the data in buffer, and recover by count value and current time slots configuration information according to the counter
Go out data source；
Business configuration register, for storage time slots configuration information.
The business configuration register, for storage time slots configuration information specifically,
The business configuration register, the data type for storing each time slot configuration, its length is log2m*(n-
1), m is data source number, and n is the timeslot number that a slot cycle is included, more than or equal to the data source number of maximum transmitted；With
And for determining the number of time slots a of the data distribution at least [(Ld/ (Td/Tt))/p]+1, wherein data wire is a width of p,
The transmission cycle Td of the root data type and need transmission data volume Ld and slot cycle Tt size.
Present invention also offers a kind of data time-division dispensing device, including,
Sending module, for data source to be stored in buffer, and according to the state information updating mark shape of data source
State register；Current time slots configuration information, control counter is selected to add up from business configuration register according to current time slots number,
The data that count value and current time slots configuration information according to the counter are read in buffer are transmitted.
Present invention also offers a kind of data time-division reception device, including,
Receiver module, for judging output time slot frame header position according to the effective time of header signal interval, and triggers time slot
Counter；When data frame head is effective, the value according to time slot counter chooses current time slots configuration information, and flip-flop number enters
Row is cumulative, and be saved in the data in buffer, and recover by count value and current time slots configuration information according to the counter
Go out data source.
Described above has shown and described the preferred embodiments of the present invention, but as previously described, it should be understood that the present invention is not
Form disclosed herein is confined to, the exclusion to other embodiment is not to be taken as, and can be used for various other combinations, modification
And environment, and can be carried out by the technology or knowledge of above-mentioned teaching or association area in invention contemplated scope described herein
Change.And the change and change that those skilled in the art are carried out do not depart from the spirit and scope of the present invention, then all should be in institute of the present invention
In attached scope of the claims.
Claims (12)
1. a kind of data time division transmission, it is characterised in that including,
Data source is stored in buffer, and according to the state information updating flag status register of data source；According to it is current when
Gap number selects current time slots configuration information from business configuration register, in the corresponding mark shape of the current time slots configuration information
When the flag bit of state register is effective, control counter adds up, count value and current time slots configuration information according to the counter
The data read in buffer are transmitted；
Effective time interval according to data header signal judges output time slot frame header position, and triggers time slot counter；In data
When frame head is effective, the value according to time slot counter chooses current time slots configuration information, and flip-flop number is added up, according to this
The count value and current time slots configuration information of counter, the data are saved in buffer, and recover data source.
2. method according to claim 1, it is characterised in that before data source storage to buffer, also include,
It is determined that the class of business to be configured, and determine the data source to be transmitted of each time slot.
3. method according to claim 2, it is characterised in that the data of the business configuration register storage time slots configuration
Type, length is log2M* (n-1), m are the maximum data source number to be transmitted, and n is the timeslot number that a slot cycle is included.
4. method according to claim 3, it is characterised in that the timeslot number of the data source distribution is at least [(Ld/
(Td/Tt))/p]+1, wherein, data wire is a width of p, and Td is the transmission cycle of the data type, and Ld is the number for needing transmission
According to amount, Tt is slot cycle.
5. according to any described method of Claims 1-4, it is characterised in that the data header signal is used for transmission time slot
Header signal and data source frame head signal.
6. according to any described method of Claims 1-4, it is characterised in that between the effective time according to header signal
Every judging output time slot frame header position, and trigger time slot counter specifically,
According to header signal and with road clock, the frame header position of slot cycle is found out, and slot count is triggered by the frame header position
Device, makes timeslot number consistent with the timeslot number for sending.
7. a kind of data time-division sending method, it is characterised in that including,
Data source is stored in buffer, and according to the state information updating flag status register of data source；According to it is current when
Gap number selects current time slots configuration information from business configuration register, and control counter adds up, according to the counting of the counter
The data that value and current time slots configuration information are read in buffer are transmitted.
8. a kind of data time-division method of reseptance, it is characterised in that including,
Effective time interval according to header signal judges output time slot frame header position, and triggers time slot counter；In data frame head
When effectively, the value according to time slot counter chooses current time slots configuration information, and flip-flop number is added up, according to the counting
The count value and current time slots configuration information of device, the data are saved in buffer, and recover data source.
9. a kind of data time division transmission system, it is characterised in that including,
Sending module, for data source to be stored in buffer, and posts according to the state information updating flag states of data source
Storage；Current time slots configuration information, control counter is selected to add up from business configuration register according to current time slots number, according to
The data that the count value and current time slots configuration information of the counter are read in buffer are transmitted；
Receiver module, for judging output time slot frame header position according to the effective time of header signal interval, and triggers slot count
Device；When data frame head is effective, the value according to time slot counter chooses current time slots configuration information, and flip-flop number is tired out
Plus, be saved in the data in buffer, and recover number by count value and current time slots configuration information according to the counter
According to source；
Business configuration register, for storage time slots configuration information.
10. system according to claim 9, it is characterised in that the business configuration register, for storage time slots configuration
Information specifically,
The business configuration register, the data type for storing each time slot configuration, its length is log2M* (n-1), m are
Data source number, n is the timeslot number that a slot cycle is included, more than or equal to the data source number of maximum transmitted；And be used for
The number of time slots a of the data distribution at least [(Ld/ (Td/Tt))/p]+1 is determined, wherein data wire is a width of p, the data
The transmission cycle Td of type is, it is necessary to the data volume of transmission is Ld and slot cycle is Tt.
A kind of 11. data time-division dispensing devices, it is characterised in that including,
Sending module, for data source to be stored in buffer, and posts according to the state information updating flag states of data source
Storage；Current time slots configuration information, control counter is selected to add up from business configuration register according to current time slots number, according to
The data that the count value and current time slots configuration information of the counter are read in buffer are transmitted.
A kind of 12. data time-division reception devices, it is characterised in that including,
Receiver module, for judging output time slot frame header position according to the effective time of header signal interval, and triggers slot count
Device；When data frame head is effective, the value according to time slot counter chooses current time slots configuration information, and flip-flop number is tired out
Plus, be saved in the data in buffer, and recover number by count value and current time slots configuration information according to the counter
According to source.
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