CN101753272A - Method, device and system for synchronously controlling window - Google Patents
Method, device and system for synchronously controlling window Download PDFInfo
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- CN101753272A CN101753272A CN201010004474A CN201010004474A CN101753272A CN 101753272 A CN101753272 A CN 101753272A CN 201010004474 A CN201010004474 A CN 201010004474A CN 201010004474 A CN201010004474 A CN 201010004474A CN 101753272 A CN101753272 A CN 101753272A
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Abstract
The embodiment of the invention relates to a method, a device and a system for synchronously controlling a window. One method comprises the following steps of: when data transmission is abnormal, synchronizing the starting position of a data send window to a first position, and sending a synchronization control message to a receiving end to indicate the receiving end to synchronize the data send window to the first position. Another method comprises the following steps of: receiving the synchronization control message sent by a sending end; and synchronizing the starting position of the data send window to the first position according to the synchronization control message. The embodiment of the invention enables the data send window of the sending end to be the same as the starting position of a data receiving window of the receiving end, thereby enabling the data sent by the sending end to match with data received by the receiving end and completing the accurate data transmission.
Description
Technical field
The embodiment of the invention relates to the communications field, relates in particular to a kind of window synchronisation control means, device and system.
Background technology
In existing communication system, different business is according to service quality (Quality ofService, hereinafter to be referred as: QoS) can use different radio link controls (Radio Link Control, hereinafter to be referred as: RLC) mode carrying, affirmation mode (Acknowledged Mode for example, hereinafter to be referred as: AM) (Unacknowledged Mode is hereinafter to be referred as UM) RLC carrying for RLC carrying or Unacknowledged Mode.To AM RLC loaded service, for realizing reliable transmission, the transmitting terminal of AM RLC can be to each protocol Data Unit (Protocol Data Unit, hereinafter to be referred as: PDU) be numbered, receiving terminal can feed back to transmitting terminal to the numbering of the PDU correspondence that receives, and handles so that transmitting terminal carries out corresponding retransmission.
In the prior art, the processing of AM RLC can be adopted sliding window mechanism, and promptly transmitting terminal and receiving terminal can be safeguarded window separately, and this length of window is constant.The length range of window is corresponding with the numbering of the PDU of required transmission, i.e. PDU in the transmitting terminal send window, and receiving terminal also only receives the PDU in the window and feeds back.Under ideal state, suppose that the original send window of transmitting terminal is 1～100, the original receive window of receiving terminal also is 1～100, and promptly transmitting terminal will send and be numbered 1～100 PDU, and receiving terminal will receive and be numbered 1～100 PDU.If feedback information is informed that receiving terminal has successfully received and is numbered 1～30 and 33 and 34 PDU, then transmitting terminal can be updated to 31～130 to window, promptly transmitting terminal need send and be numbered 31～130 PDU at this moment, receiving terminal successfully receive be numbered 1～30 and 33 and 34 PDU after, also need receive window is updated to 31～130.
In realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art: a large amount of factors such as check errors, agreement imperfection or packet loss rising, the send window of the transmitting terminal after all may causing upgrading and the receive window of receiving terminal do not match, thereby can't correctly transmit data again.
Summary of the invention
The embodiment of the invention provides a kind of window synchronisation control means, device and system.
The embodiment of the invention provides a kind of window synchronisation control means, comprising:
When data transmission exception, the original position of data transmission window is synchronized to the primary importance place and sends the Synchronization Control message to receiving terminal the original position of Data Receiving window is synchronized to described primary importance place to indicate described receiving terminal.
The embodiment of the invention provides another kind of window synchronisation control means, comprising:
The Synchronization Control message that receiving end/sending end sends;
According to described Synchronization Control message the original position of Data Receiving window is synchronized to the primary importance place.
The embodiment of the invention provides another kind of sending ending equipment, comprising:
First sending module is used for when data transmission exception, sends the Synchronization Control message to receiving terminal and to indicate described receiving terminal the original position of Data Receiving window is synchronized to the primary importance place;
First processing module is used for the original position of data transmission window is synchronized to described primary importance place.
The embodiment of the invention provides another kind of receiving device, comprising:
Second receiver module is used for the Synchronization Control message that receiving end/sending end sends;
Second processing module is used for according to described Synchronization Control message the original position of Data Receiving window being synchronized to the primary importance place.
The embodiment of the invention provides a kind of window synchronous control system, comprising:
Sending ending equipment is used for when data transmission exception, and the original position of data transmission window is synchronized to the primary importance place and sends the Synchronization Control message to receiving device;
Receiving device is used to receive the Synchronization Control message that described sending ending equipment sends, and according to described Synchronization Control message the original position of Data Receiving window is synchronized to described primary importance place.
In the embodiment of the invention, transmitting terminal is when knowing current data transmission exception, can indicate receiving terminal to carry out window simultaneous operation, transmitting terminal oneself also carries out corresponding window simultaneous operation, thereby make that the data transmission window of transmitting terminal is identical with the original position of the Data Receiving window of receiving terminal, thereby make the data of transmitting terminal transmission and the data that receiving terminal receives be complementary, finish correct transfer of data.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart of an embodiment of window synchronisation control means of the present invention;
Fig. 2 is the flow chart of another embodiment of window synchronisation control means of the present invention;
Fig. 3 is the flow chart of another embodiment of window synchronisation control means of the present invention;
Fig. 4 is the flow chart of another embodiment of window synchronisation control means of the present invention;
Fig. 5 is the structural representation of an embodiment of sending ending equipment of the present invention;
Fig. 6 is the structural representation of another embodiment of sending ending equipment of the present invention;
Fig. 7 is the structural representation of an embodiment of receiving device of the present invention;
Fig. 8 is the structural representation of another embodiment of receiving device of the present invention;
Fig. 9 is the structural representation of window synchronous control system embodiment of the present invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Fig. 1 is the flow chart of an embodiment of window synchronisation control means of the present invention, and as shown in Figure 1, the method for present embodiment can comprise:
Need to prove not have sequencing between step 101 and the step 102.
For instance, transmitting terminal knows whether unusual mode can have two kinds to current transfer of data, whether a kind of to be that transmitting terminal detects current transfer of data voluntarily unusual, and whether another kind is that receiving terminal detects current transfer of data unusual and detecting notice transmitting terminal when unusual.Judgment data transmission whether unusual mechanism can comprise that receiving terminal does not return pooling, packet loss abnormal ascending, transmitting terminal continuously and receives that unusual status report, receiving terminal receive the data message that window is outer continuously.Present embodiment is not limited to the mechanism of these several judgment data transmission abnormalities, and those skilled in the art can adopt different judgment mechanisms as required.
When transmitting terminal is known current data transmission exception, can send the Synchronization Control message to receiving terminal, this Synchronization Control message is used to indicate receiving terminal to carry out the window Synchronous Processing, promptly indicates receiving terminal that the original position of Data Receiving window is synchronized to the primary importance place.And transmitting terminal also will be synchronized to the primary importance place with the original position of data transmission window of himself.Receiving terminal carries out the process of window simultaneous operation and can carry out simultaneously with the process that transmitting terminal carries out window simultaneous operation, also can not carry out simultaneously, as long as receiving terminal all is synchronized to identical position with the original position of window with transmitting terminal.
Transmitting terminal is after data transmission window and Data Receiving window are all finished Synchronous Processing, and the data transmission window after can application of synchronized handling sends data to receiving terminal.
In the present embodiment, transmitting terminal is when knowing current data transmission exception, can indicate receiving terminal to carry out window simultaneous operation, transmitting terminal oneself also carries out corresponding window simultaneous operation, thereby make that the data transmission window of transmitting terminal is identical with the original position of the Data Receiving window of receiving terminal, thereby make the data of transmitting terminal transmission and the data that receiving terminal receives be complementary, finish correct transfer of data.
In another embodiment of window synchronisation control means of the present invention, the described original position with data transmission window of step 101 shown in Figure 1 is synchronized to the primary importance place, can comprise: according to default primary importance information the original position of described data transmission window is synchronized to described primary importance place; The described indication receiving terminal of step 102 is synchronized to the primary importance place with the original position of Data Receiving window, can comprise: indicate the default primary importance information of described receiving terminal basis that the original position of described Data Receiving window is synchronized to described primary importance place.
For instance, receiving terminal and transmitting terminal can be made an appointment, and when needs carry out data transmission window and Data Receiving window synchronous, the original position of window can be synchronized to PDU and be numbered 0 position, be i.e. the primary importance place.Receiving terminal can be synchronized to the original position of Data Receiving window PDU and be numbered 0 position behind the Synchronization Control message that receiving end/sending end sends, and transmitting terminal also can be synchronized to the original position of data transmission window PDU and be numbered 0 position.Because data transmission window is identical with the length of Data Receiving window, can be designated as AM_Window_Size in the present embodiment, AM_Window_Size=100 for example, therefore, the original position of the data transmission window of transmitting terminal is that PDU is numbered 0 position, and final position is the position that PDU is numbered 0+AM_Window_Size; Correspondingly, the original position of the Data Receiving window of receiving terminal is that PDU is numbered 0 position, and final position is the position that PDU is numbered 0+AM_Window_Size.
With for instance top, transmitting terminal can be used PDU numbering is that 0～99 data transmission window sends data, receiving terminal also can be used PDU numbering is that 0～99 Data Receiving window receives data, thereby make the window coupling of transmitting terminal and receiving terminal, and then finish correct transfer of data.
Need to prove, present embodiment is only made an appointment when the initiation window is synchronous with receiving terminal and transmitting terminal, the original position of window is synchronized to PDU is numbered 0 position, and length of window AM_Window_Size 100 describes for example, those skilled in the art can be as required be synchronized to the optional position with the original position of data transmission window and Data Receiving window, also length of window can be set as required, only need the original position of transmitting terminal and receiving terminal to be synchronized to identical position and get final product.
In another embodiment of window synchronisation control means of the present invention, described in the step 102 shown in Figure 1 to receiving terminal transmission Synchronization Control message, can comprise: send to described receiving terminal and carry the Synchronization Control message of primary importance information; The described receiving terminal of step 101 is synchronized to the primary importance place with the original position of Data Receiving window, can comprise: described receiving terminal is synchronized to described primary importance place according to the primary importance information of carrying in the described Synchronization Control message with the original position of described Data Receiving window.
Specifically, when transmitting terminal sends the Synchronization Control message to receiving terminal, can carry primary importance information in this Synchronization Control message, this primary importance information can be used to indicate receiving terminal that the original position of Data Receiving window is synchronized to and this primary importance information corresponding first location place.
For instance, transmitting terminal can send the Synchronization Control message to receiving terminal, and the primary importance information of carrying in this Synchronization Control message is 5, and then transmitting terminal is promptly indicated receiving terminal that the original position of Data Receiving window is synchronized to PDU and is numbered 5 primary importance place.Receiving terminal can be synchronized to the original position of Data Receiving window PDU and be numbered 5 position behind the Synchronization Control message that receiving end/sending end sends, and transmitting terminal also can be synchronized to the original position of data transmission window PDU and be numbered 5 position.Because data transmission window is identical with the length of Data Receiving window, can be designated as AM_Window_Size in the present embodiment, AM_Window_Size=100 for example, therefore, the original position of the data transmission window of transmitting terminal is that PDU is numbered 5 position, and final position is that PDU is numbered 104 position; Correspondingly, the original position of the Data Receiving window of receiving terminal is that PDU is numbered 5 position, and final position is that PDU is numbered 104 position.
So far, transmitting terminal can be used PDU numbering is that 5～104 data transmission window sends data, receiving terminal also can be used PDU numbering is that 5～104 Data Receiving window receives data, thereby makes the window coupling of transmitting terminal and receiving terminal, and then finishes correct transfer of data.
Need to prove, present embodiment is that PDU is numbered 5 positional information with the primary importance information of carrying in the receiving terminal only, and length of window AM_Window_Size 100 describes for example, those skilled in the art can be arbitrary PDU numbering as required with the primary importance information setting, thereby the original position of data transmission window and Data Receiving window is synchronized to the optional position, also length of window can be set as required, only need the original position of transmitting terminal and receiving terminal to be synchronized to identical position and get final product.
Further, detect the situation of knowing current data transmission exception for receiving terminal, receiving terminal can ask transmitting terminal initiation window synchronous, therefore, present embodiment is before sending the Synchronization Control message to receiving terminal, can also comprise: receive the window synchronization request message that described receiving terminal sends after knowing data transmission exception, carry the start position information of Data Receiving window in the described window synchronization request message; In described data transmission window, is described start position information with described primary importance information setting as if the original position of knowing the Data Receiving window according to described start position information.
For instance, receiving terminal also can detect and know whether current transfer of data is unusual, and its testing mechanism repeats no more as previously mentioned.Know that when receiving terminal detects current transfer of data takes place when unusual, this receiving terminal can be to transmitting terminal send window synchronization request message, and the request transmitting terminal is initiated the window synchronizing process.Can carry the start position information of current Data Receiving window in this window synchronization request message, this start position information can be used for transmitting terminal and judge that whether current data transmission window does not match with current Data Receiving window, thereby confirms whether to initiate window Synchronous Processing process.
For instance, receiving terminal is to transmitting terminal send window synchronization request message the time, the start position information of the current Data Receiving window that it carries can be numbered 60 positional information for PDU, if length of window is 100, then current Data Receiving window is 60～159.Transmitting terminal is after receiving this window synchronization request message, the start position information that can know the Data Receiving window is 60, if the current data transmission window of transmitting terminal is 50～149, the start position information of Data Receiving window that receiving terminal then is described is in current data transmission window, because transfer of data allows certain packet loss, therefore, this moment transmitting terminal not execution in step 101～102 initiate the window synchronizing processes, and only need synchronously can be synchronous with the Data Receiving window of receiving terminal at 60 places with the original position of data transmission window.If the current data transmission window of data transmission window of transmitting terminal is 70～169, the start position information of Data Receiving window that receiving terminal then is described is outside current data transmission window, and then this moment, transmitting terminal can execution in step 101～102 be initiated the window synchronizing processes.
Further, step 102 is described after receiving terminal sends the Synchronization Control message, can also comprise: the data transmission window after application of synchronized is handled sends data.
Again further, in order to make transmitting terminal know that the data transmission window after application of synchronized was handled again after receiving terminal had been finished window simultaneous operation carries out transfer of data, the data transmission window of the method for present embodiment after application of synchronized is handled sends before the data, can also comprise: receive described receiving terminal feedback be used to represent that described receiving terminal finishes the affirmation message of Synchronous Processing, carry the identification information that is used to identify this Synchronous Processing operation that comprises in the described Synchronization Control message in the described confirmation message.
Specifically, receiving terminal is after finishing the window Synchronous Processing according to the Synchronization Control message, can send confirmation message to transmitting terminal, can comprise identification information in this confirmation message, this identification information is used to identify the operation of this Synchronous Processing, thereby can make and which subsynchronous processing to operate corresponding with when receiving terminal can know this confirmation message after receiving this confirmation message.
Perhaps, in order to make transmitting terminal know that the data transmission window after application of synchronized was handled again after receiving terminal had been finished window simultaneous operation carries out transfer of data, the data transmission window of the method for present embodiment after application of synchronized is handled sends before the data, can also comprise: start timing device to carry out transfer of data when timing arrives.
Specifically, receiving terminal is after sending the Synchronization Control message to transmitting terminal, can start timing device, those skilled in the art can set the timing of timing device as required, thereby when timing arrives, receiving terminal just begins the application data send window and sends data, thereby guarantees that receiving terminal has time enough that the data receive window is carried out the Synchronous Processing operation.
The technical scheme that detects transfer of data unusual situation takes place is example window synchronisation control means of the present invention with receiving terminal is elaborated below.
Fig. 2 is the flow chart of another embodiment of window synchronisation control means of the present invention, and as shown in Figure 2, the method for present embodiment can comprise:
The current transfer of data that detects step 201, receiving terminal takes place unusual.
For instance, receiving terminal can or receive that the outer current transfer of data of data message judgement of window takes place unusual continuously according to the packet loss abnormal ascending.
Can carry the start position information of current Data Receiving window in this window synchronization request message, this start position information can be used for transmitting terminal and judge that whether current data transmission window does not match with current Data Receiving window, thereby confirms whether to initiate window Synchronous Processing process.
Step 204, transmitting terminal are synchronized to this start position information place, execution in step 209 with the original position of data transmission window.
Step 205, transmitting terminal send the Synchronization Control message to receiving terminal, and start timing device.
Can carry primary importance information in this Synchronization Control message, this primary importance information can be used to indicate receiving terminal that the original position of Data Receiving window is synchronized to and this primary importance information corresponding first location place.
For instance, transmitting terminal can send the Synchronization Control message to receiving terminal, and the primary importance information of carrying in this Synchronization Control message is 5, and then transmitting terminal is promptly indicated receiving terminal that the original position of Data Receiving window is synchronized to PDU and is numbered 5 primary importance place.Receiving terminal is behind the Synchronization Control message that receiving end/sending end sends, the original position of Data Receiving window can be synchronized to PDU and be numbered 5 position, if length of window is 100, then the original position of the Data Receiving window of receiving terminal can be changed to PDU and be numbered 5 position, and final position can be changed to PDU and be numbered 104 position.
Transmitting terminal also can be synchronized to the original position of data transmission window PDU and be numbered 5 position, and final position is that PDU is numbered 104 position.
In the present embodiment, if do not carry primary importance information in the Synchronization Control message, then transmitting terminal and receiving terminal can use the position of making an appointment to carry out the window Synchronous Processing.
Need to prove not have sequencing between step 206 and the step 207.
The data transmission window that adopts timing device to trigger after the transmitting terminal application is upgraded in the present embodiment sends data, in another scheme, transmitting terminal also can be waited for the affirmation message that reception has been finished by the expression window Synchronous Processing of receiving terminal transmission, and then sends data to receiving terminal.
Data transmission window after step 209, application of synchronized are handled sends data to receiving terminal.
So far, transmitting terminal can be used the identical window transmission of PDU numbering and accept data with receiving terminal, thereby makes the window of transmitting terminal and receiving terminal mate, and then finishes correct transfer of data.
In the present embodiment, transmitting terminal is when knowing current data transmission exception, can indicate receiving terminal to carry out window simultaneous operation, transmitting terminal oneself also carries out corresponding window simultaneous operation, thereby make that the data transmission window of transmitting terminal is identical with the original position of the Data Receiving window of receiving terminal, thereby make the data of transmitting terminal transmission and the data that receiving terminal receives be complementary, finish correct transfer of data.
Fig. 3 is the flow chart of another embodiment of window synchronisation control means of the present invention, and as shown in Figure 3, the method for present embodiment can comprise:
The Synchronization Control message that step 301, receiving end/sending end send.
Transmitting terminal sends the Synchronization Control message to receiving terminal and to indicate described receiving terminal the original position of Data Receiving window is synchronized to the primary importance place after knowing data transmission exception.
For instance, transmitting terminal knows whether unusual mode can have two kinds to current transfer of data, whether a kind of to be that transmitting terminal detects current transfer of data voluntarily unusual, and whether another kind is that receiving terminal detects current transfer of data unusual and detecting notice transmitting terminal when unusual.Judgment data transmission whether unusual mechanism can comprise that receiving terminal does not return pooling, packet loss abnormal ascending, transmitting terminal continuously and receives that unusual status report, receiving terminal receive the data message that window is outer continuously.Present embodiment is not limited to the mechanism of these several judgment data transmission abnormalities, and those skilled in the art can adopt arbitrary judgment mechanism as required.
Step 302, the original position of Data Receiving window is synchronized to the primary importance place according to described Synchronization Control message.
For instance, receiving terminal and transmitting terminal can be made an appointment, and when needs carry out data transmission window and Data Receiving window synchronous, the original position of window can be synchronized to PDU and be numbered 0 position.Receiving terminal is behind the Synchronization Control message that receiving end/sending end sends, the original position of Data Receiving window can be synchronized to PDU and be numbered 0 position, if length of window is 100, therefore, the original position of the Data Receiving window of receiving terminal is that PDU is numbered 0 position, and final position is that PDU is numbered 99 position.Correspondingly, the original position of the data transmission window of transmitting terminal is that PDU is numbered 0 position, and final position is that PDU is numbered 99 position.
Data Receiving window after receiving terminal can application of synchronized be handled, for example PDU is numbered that 0～99 window receiving end/sending end uses the PDU numbering is the data that 0～99 data transmission window sends, thereby make the window coupling of transmitting terminal and receiving terminal, and then finish correct transfer of data.
Need to prove, present embodiment is only made an appointment when the initiation window is synchronous with receiving terminal and transmitting terminal, the original position of window is synchronized to PDU is numbered 0 position, and length of window AM_Window_Size 100 describes for example, those skilled in the art can be as required be synchronized to the optional position with the original position of data transmission window and Data Receiving window, also length of window can be set as required, only need the original position of transmitting terminal and receiving terminal to be synchronized to identical position and get final product.
In the present embodiment, receiving terminal can be when knowing current data transmission exception, the Synchronization Control message that receiving end/sending end sends, thereby trigger receiving terminal and carry out window simultaneous operation, make that the data transmission window of transmitting terminal is identical with the original position of the Data Receiving window of receiving terminal, thereby make the data of transmitting terminal transmission and the data that receiving terminal receives be complementary, finish correct transfer of data.
In another embodiment of window synchronisation control means of the present invention, step 302 shown in Figure 3 is described to be synchronized to the primary importance place according to described Synchronization Control message with the original position of Data Receiving window, can comprise: according to the primary importance information of carrying in the described Synchronization Control message original position of described Data Receiving window is synchronized to described primary importance place.
For instance, transmitting terminal can send the Synchronization Control message to receiving terminal, and the primary importance information of carrying in this Synchronization Control message is 5, and then transmitting terminal is promptly indicated receiving terminal that the original position of Data Receiving window is synchronized to PDU and is numbered 5 primary importance place.Receiving terminal can be synchronized to the original position of Data Receiving window PDU and be numbered 5 position behind the Synchronization Control message that receiving end/sending end sends, and transmitting terminal also can be synchronized to the original position of data transmission window PDU and be numbered 5 position.If length of window is 100, then the original position of the data transmission window of transmitting terminal is that PDU is numbered 5 position, and final position is that PDU is numbered 104 position; Correspondingly, the original position of the Data Receiving window of receiving terminal is that PDU is numbered 5 position, and final position is that PDU is numbered 104 position.Transmitting terminal can be used PDU numbering is that 5～104 data transmission window sends data, receiving terminal also can be used PDU numbering is that 5～104 Data Receiving window receives data, thereby make the window coupling of transmitting terminal and receiving terminal, and then finish correct transfer of data.
Further, before the Synchronization Control message that the described receiving end/sending end of step 301 sends, can also comprise: after knowing data transmission exception, to described transmitting terminal send window synchronization request message, carry the start position information of Data Receiving window in the described window synchronization request message, so that described transmitting terminal determines whether that according to described start position information needs carry out Synchronous Processing.
Specifically, receiving terminal also can detect and know whether current transfer of data is unusual, and its testing mechanism repeats no more as previously mentioned.Know that when receiving terminal detects current transfer of data takes place when unusual, this receiving terminal can be to transmitting terminal send window synchronization request message, and the request transmitting terminal is initiated the window synchronizing process.Can carry the start position information of current Data Receiving window in this window synchronization request message, this start position information can be used for transmitting terminal and judge that whether current data transmission window does not match with current Data Receiving window, thereby confirms whether to initiate window Synchronous Processing process.
For instance, receiving terminal is to transmitting terminal send window synchronization request message the time, the start position information of the current Data Receiving window that it carries can be numbered 60 positional information for PDU, if length of window is 100, then current Data Receiving window is 60～159.Transmitting terminal is after receiving this window synchronization request message, the start position information that can know the Data Receiving window is 60, if the current data transmission window of transmitting terminal is 50～149, the start position information of Data Receiving window that receiving terminal then is described is in current data transmission window, because transfer of data allows certain packet loss, therefore, transmitting terminal can not carried out step 101 shown in Figure 1～102 and initiated the window synchronizing processes this moment, and only need synchronously can be synchronous with the Data Receiving window of receiving terminal at 60 places with the original position of data transmission window.If the current data transmission window of data transmission window of transmitting terminal is 70～169, the start position information of Data Receiving window that receiving terminal then is described is outside current data transmission window, and then transmitting terminal can be carried out step 101 shown in Figure 1～102 and initiated the window synchronizing processes this moment.
Again further, can also comprise after step 302 shown in Figure 3: the Data Receiving window after application of synchronized is handled receives the data that described transmitting terminal sends.In order to make transmitting terminal know that the data transmission window after application of synchronized is handled again after finishing window simultaneous operation carries out transfer of data, the Data Receiving window of the method for present embodiment after application of synchronized is handled receives before the data of described transmitting terminal transmission, can also comprise: send confirmation message to described transmitting terminal, described confirmation message is used for representing that described receiving terminal is finished Synchronous Processing and described confirmation message carries the identification information that is used to identify this Synchronous Processing operation that comprises in the described Synchronization Control message, perhaps starts timing device to carry out transfer of data when timing arrives.
Specifically, receiving terminal is after finishing the window Synchronous Processing according to the Synchronization Control message, can send confirmation message to transmitting terminal, can comprise identification information in this confirmation message, this identification information is used to identify the operation of this Synchronous Processing, thereby can make and which subsynchronous processing to operate corresponding with when receiving terminal can know this confirmation message after receiving this confirmation message.Perhaps receiving terminal is after sending the Synchronization Control message to transmitting terminal, can start timing device, those skilled in the art can set the timing of timing device as required, thereby when timing arrives, receiving terminal just begins the application data send window and sends data, thereby guarantees that receiving terminal has time enough that the data receive window is carried out the Synchronous Processing operation.
The technical scheme that detects transfer of data unusual situation takes place is example window synchronisation control means of the present invention with receiving terminal is elaborated below.
Fig. 4 is the flow chart of another embodiment of window synchronisation control means of the present invention, and as shown in Figure 4, the method for present embodiment can comprise:
The current transfer of data that detects step 401, receiving terminal takes place unusual.
For instance, receiving terminal can or receive that the outer current transfer of data of data message judgement of window takes place unusual continuously according to the packet loss abnormal ascending.
Can carry the start position information of current Data Receiving window in this window synchronization request message, this start position information can be used for transmitting terminal and judge that whether current data transmission window does not match with current Data Receiving window, thereby confirms whether to initiate window Synchronous Processing process.
Step 404, transmitting terminal are synchronized to this start position information place, execution in step 409 with the original position of data transmission window.
Step 405, transmitting terminal send the Synchronization Control message to receiving terminal.
Can carry primary importance information in this Synchronization Control message, this primary importance information can be used to indicate receiving terminal that the original position of Data Receiving window is synchronized to and this primary importance information corresponding first location place.
For instance, transmitting terminal can send the Synchronization Control message to receiving terminal, and the primary importance information of carrying in this Synchronization Control message is 5, and then transmitting terminal is promptly indicated receiving terminal that the original position of Data Receiving window is synchronized to PDU and is numbered 5 primary importance place.Receiving terminal is behind the Synchronization Control message that receiving end/sending end sends, the original position of Data Receiving window can be synchronized to PDU and be numbered 5 position, if length of window is 100, then the original position of the Data Receiving window of receiving terminal can be changed to PDU and be numbered 5 position, and final position can be changed to PDU and be numbered 104 position.
Transmitting terminal also can be synchronized to the original position of data transmission window PDU and be numbered 5 position, and final position is that PDU is numbered 104 position.
In the present embodiment, if do not carry primary importance information in the Synchronization Control message, then transmitting terminal and receiving terminal can use the position of making an appointment to carry out the window Synchronous Processing.
Need to prove not have sequencing between step 406 and the step 407.
Transmitting terminal can be waited for the affirmation message that reception has been finished by the expression window Synchronous Processing of receiving terminal transmission, and then sends data to receiving terminal.
Data transmission window after step 409, application of synchronized are handled sends data to receiving terminal.
So far, transmitting terminal can be used the identical window transmission of PDU numbering and accept data with receiving terminal, thereby makes the window of transmitting terminal and receiving terminal mate, and then finishes correct transfer of data.
In the present embodiment, transmitting terminal is when knowing current data transmission exception, can indicate receiving terminal to carry out window simultaneous operation, transmitting terminal oneself also carries out corresponding window simultaneous operation, thereby make that the data transmission window of transmitting terminal is identical with the original position of the Data Receiving window of receiving terminal, thereby make the data of transmitting terminal transmission and the data that receiving terminal receives be complementary, finish correct transfer of data.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
Fig. 5 is the structural representation of an embodiment of sending ending equipment of the present invention, as shown in Figure 5, the sending ending equipment of present embodiment can comprise: first sending module 11 and first processing module 12, wherein, first sending module 11 is used for when data transmission exception, sends the Synchronization Control message to receiving terminal and to indicate described receiving terminal the original position of Data Receiving window is synchronized to the primary importance place; First processing module 12 is used for the original position of data transmission window is synchronized to described primary importance place.
The sending ending equipment of present embodiment is identical with the realization principle of window synchronisation control means embodiment shown in Figure 1, repeats no more.In the present embodiment, sending ending equipment can indicate receiving terminal to carry out window simultaneous operation, transmitting terminal oneself also carries out corresponding window simultaneous operation, thereby make that the data transmission window of transmitting terminal is identical with the original position of the Data Receiving window of receiving terminal, thereby make the data of transmitting terminal transmission and the data that receiving terminal receives be complementary, finish correct transfer of data.
Fig. 6 is the structural representation of another embodiment of sending ending equipment of the present invention, as shown in Figure 6, the sending ending equipment of present embodiment is on the basis of sending ending equipment shown in Figure 5, further comprise: first receiver module 13, this first receiver module 13 is used to receive the window synchronization request message that described receiving terminal sends after knowing data transmission exception, carry the start position information of Data Receiving window in the described window synchronization request message; First processing module 12 also is used for when the original position of knowing the Data Receiving window according to described start position information is in described data transmission window, and the original position of described data transmission window is synchronized to described start position information place.Further, first receiver module 13 also be used to receive described receiving terminal feedback be used to represent that described receiving terminal finishes the affirmation message of Synchronous Processing, carry the identification information that is used to identify this Synchronous Processing operation that comprises in the described Synchronization Control message in the described confirmation message.Again further, first processing module 12 also is used to start timing device to carry out transfer of data when timing arrives.
The sending ending equipment of present embodiment is identical with the realization principle of window synchronisation control means embodiment shown in Figure 2, repeats no more.In the present embodiment, sending ending equipment can indicate receiving terminal to carry out window simultaneous operation, transmitting terminal oneself also carries out corresponding window simultaneous operation, thereby make that the data transmission window of transmitting terminal is identical with the original position of the Data Receiving window of receiving terminal, thereby make the data of transmitting terminal transmission and the data that receiving terminal receives be complementary, finish correct transfer of data.
Fig. 7 is the structural representation of an embodiment of receiving device of the present invention, as shown in Figure 7, the receiving device of present embodiment can comprise: second receiver module 21 and second processing module, 22, the second receiver modules 21 are used for the Synchronization Control message that receiving end/sending end sends; Second processing module 22 is used for according to described Synchronization Control message the original position of Data Receiving window being synchronized to the primary importance place.
The receiving device of present embodiment is identical with the realization principle of window synchronisation control means embodiment shown in Figure 3, repeats no more.
In the present embodiment, the Synchronization Control message that receiving device can receiving end/sending end sends, thereby trigger receiving terminal and carry out window simultaneous operation, make that the data transmission window of transmitting terminal is identical with the original position of the Data Receiving window of receiving terminal, thereby make the data of transmitting terminal transmission and the data that receiving terminal receives be complementary, finish correct transfer of data.
Fig. 8 is the structural representation of another embodiment of receiving device of the present invention, as shown in Figure 8, the receiving device of present embodiment further comprises on the basis of receiving device shown in Figure 7: second sending module 23, this second sending module 23 is used for after knowing data transmission exception, to described transmitting terminal send window synchronization request message, carry the start position information of Data Receiving window in the described window synchronization request message, so that described transmitting terminal determines whether that according to described start position information needs carry out Synchronous Processing.Further, second sending module 23 also is used for sending confirmation message to described transmitting terminal, and described confirmation message is used for representing that described receiving terminal is finished Synchronous Processing and described confirmation message carries the identification information that is used to identify this Synchronous Processing operation that comprises in the described Synchronization Control message.
The receiving device of present embodiment is identical with the realization principle of window synchronisation control means embodiment shown in Figure 4, repeats no more.In the present embodiment, the Synchronization Control message that receiving device can receiving end/sending end sends, thereby trigger receiving terminal and carry out window simultaneous operation, make that the data transmission window of transmitting terminal is identical with the original position of the Data Receiving window of receiving terminal, thereby make the data of transmitting terminal transmission and the data that receiving terminal receives be complementary, finish correct transfer of data.
Fig. 9 is the structural representation of window synchronous control system embodiment of the present invention, as shown in Figure 9, the system of present embodiment can comprise: sending ending equipment 1 and receiving device 2, wherein, sending ending equipment 1 is used for when data transmission exception, and the original position of data transmission window is synchronized to the primary importance place and sends the Synchronization Control messages to receiving device 2; Receiving device 2 is used to receive the Synchronization Control message that described sending ending equipment sends, and according to described Synchronization Control message the original position of Data Receiving window is synchronized to described primary importance place.
In the present embodiment system, sending ending equipment 1 can adopt the structure shown in Fig. 5 or 6 to realize, and the realization principle of sending ending equipment 1 is identical with the realization principle of the method embodiment shown in Fig. 1 or 2, receiving device 2 can adopt the structure shown in Fig. 7 or 8 to realize, and the realization principle of receiving device 2 is identical with the realization principle of the method embodiment shown in Fig. 3 or 4, repeats no more.
In the present embodiment, the Synchronization Control message that receiving device can receiving end/sending end equipment sends, thereby trigger receiving device and carry out window simultaneous operation, make that the data transmission window of sending ending equipment is identical with the original position of the Data Receiving window of receiving device, thereby make the data of sending ending equipment transmission and the data that receiving device receives be complementary, finish correct transfer of data.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (20)
1. a window synchronisation control means is characterized in that, comprising:
When data transmission exception, the original position of data transmission window is synchronized to the primary importance place and sends the Synchronization Control message to receiving terminal the original position of Data Receiving window is synchronized to described primary importance place to indicate described receiving terminal.
2. window synchronisation control means according to claim 1 is characterized in that, and is described to receiving terminal transmission Synchronization Control message, comprising:
Carry the Synchronization Control message of primary importance information to described receiving terminal transmission;
Described receiving terminal is synchronized to the primary importance place with the original position of Data Receiving window, comprising:
Described receiving terminal is synchronized to described primary importance place according to the primary importance information of carrying in the described Synchronization Control message with the original position of described Data Receiving window.
3. window synchronisation control means according to claim 2 is characterized in that, and is described before receiving terminal sends the Synchronization Control message, also comprises:
Receive the window synchronization request message that described receiving terminal sends after knowing data transmission exception, carry the start position information of Data Receiving window in the described window synchronization request message;
In described data transmission window, then the original position with described data transmission window is synchronized to described start position information place as if the original position of knowing the Data Receiving window according to described start position information.
4. window synchronisation control means according to claim 1 is characterized in that, described original position with data transmission window is synchronized to the primary importance place, comprising:
According to default primary importance information the original position of described data transmission window is synchronized to described primary importance place;
Described indication receiving terminal is synchronized to the primary importance place with the original position of Data Receiving window, comprising:
Indicate the default primary importance information of described receiving terminal basis that the original position of described Data Receiving window is synchronized to described primary importance place.
5. according to the described window synchronisation control means of arbitrary claim in the claim 1～4, it is characterized in that, described after receiving terminal sends the Synchronization Control message, also comprise:
Data transmission window after application of synchronized is handled sends data.
6. window synchronisation control means according to claim 5 is characterized in that, the data transmission window after described application of synchronized is handled sends before the data, also comprises:
Receive described receiving terminal feedback be used to represent that described receiving terminal finishes the affirmation message of Synchronous Processing, carry the identification information that is used to identify this Synchronous Processing operation that comprises in the described Synchronization Control message in the described confirmation message.
7. window synchronisation control means according to claim 5 is characterized in that, the data transmission window after described application of synchronized is handled sends before the data, also comprises:
Start timing device when timing arrives, to carry out transfer of data.
8. a window synchronisation control means is characterized in that, comprising:
The Synchronization Control message that receiving end/sending end sends;
According to described Synchronization Control message the original position of Data Receiving window is synchronized to the primary importance place.
9. window synchronisation control means according to claim 8 is characterized in that, describedly according to described Synchronization Control message the original position of Data Receiving window is synchronized to the primary importance place, comprising:
According to the primary importance information of carrying in the described Synchronization Control message original position of described Data Receiving window is synchronized to described primary importance place.
10. window synchronisation control means according to claim 8 is characterized in that, before the Synchronization Control message that described receiving end/sending end sends, also comprises:
After knowing data transmission exception, to described transmitting terminal send window synchronization request message, carry the start position information of Data Receiving window in the described window synchronization request message, so that described transmitting terminal determines whether that according to described start position information needs carry out Synchronous Processing.
11. the described window synchronisation control means of arbitrary claim is characterized in that according to Claim 8～10, described original position with the Data Receiving window is synchronized to after the primary importance place, also comprises:
Data Receiving window after application of synchronized is handled receives the data that described transmitting terminal sends.
12. window synchronisation control means according to claim 11 is characterized in that, the Data Receiving window after described application of synchronized is handled receives before the data of described transmitting terminal transmission, also comprises:
Send confirmation message to described transmitting terminal, described confirmation message is used for representing that described receiving terminal is finished Synchronous Processing and described confirmation message carries the identification information that is used to identify this Synchronous Processing operation that comprises in the described Synchronization Control message.
13. a sending ending equipment is characterized in that, comprising:
First sending module is used for when data transmission exception, sends the Synchronization Control message to receiving terminal and to indicate described receiving terminal the original position of Data Receiving window is synchronized to the primary importance place;
First processing module is used for the original position of data transmission window is synchronized to described primary importance place.
14. sending ending equipment according to claim 13 is characterized in that, also comprises:
First receiver module is used to receive the window synchronization request message that described receiving terminal sends after knowing data transmission exception, carry the start position information of Data Receiving window in the described window synchronization request message;
Described first processing module also is used for when the original position of knowing the Data Receiving window according to described start position information is in described data transmission window, and the original position of described data transmission window is synchronized to described start position information place.
15. sending ending equipment according to claim 14, it is characterized in that, described first receiver module also be used to receive described receiving terminal feedback be used to represent that described receiving terminal finishes the affirmation message of Synchronous Processing, carry the identification information that is used to identify this Synchronous Processing operation that comprises in the described Synchronization Control message in the described confirmation message.
16., it is characterized in that described first processing module also is used to start timing device to carry out transfer of data when timing arrives according to claim 13 or 14 described sending ending equipments.
17. a receiving device is characterized in that, comprising:
Second receiver module is used for the Synchronization Control message that receiving end/sending end sends;
Second processing module is used for according to described Synchronization Control message the original position of Data Receiving window being synchronized to the primary importance place.
18. receiving device according to claim 17 is characterized in that, also comprises:
Second sending module, be used for after knowing data transmission exception, to described transmitting terminal send window synchronization request message, carry the start position information of Data Receiving window in the described window synchronization request message, so that described transmitting terminal determines whether that according to described start position information needs carry out Synchronous Processing.
19. receiving device according to claim 18, it is characterized in that, described second sending module also is used for sending confirmation message to described transmitting terminal, and described confirmation message is used for representing that described receiving terminal is finished Synchronous Processing and described confirmation message carries the identification information that is used to identify this Synchronous Processing operation that comprises in the described Synchronization Control message.
20. a window synchronous control system is characterized in that, comprising:
Sending ending equipment is used for when data transmission exception, and the original position of data transmission window is synchronized to the primary importance place and sends the Synchronization Control message to receiving device;
Receiving device is used to receive the Synchronization Control message that described sending ending equipment sends, and according to described Synchronization Control message the original position of Data Receiving window is synchronized to described primary importance place.
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| CN2010100044745A CN101753272B (en) | 2010-01-15 | 2010-01-15 | Method, device and system for synchronously controlling window |
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| CN2010100044745A CN101753272B (en) | 2010-01-15 | 2010-01-15 | Method, device and system for synchronously controlling window |
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| CN103686985A (en) * | 2012-09-25 | 2014-03-26 | 中兴通讯股份有限公司 | A device discovering method and a device discovering apparatus used for device-to-device communication |
| WO2014180426A1 (en) * | 2013-09-26 | 2014-11-13 | 中兴通讯股份有限公司 | Transmission method for device-to-device discovery signal and user equipment |
| CN112637011A (en) * | 2020-12-17 | 2021-04-09 | 杭州和利时自动化有限公司 | Data transmission method, data transmission device, and storage medium |
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| CN103686985A (en) * | 2012-09-25 | 2014-03-26 | 中兴通讯股份有限公司 | A device discovering method and a device discovering apparatus used for device-to-device communication |
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| WO2014180426A1 (en) * | 2013-09-26 | 2014-11-13 | 中兴通讯股份有限公司 | Transmission method for device-to-device discovery signal and user equipment |
| CN112637011A (en) * | 2020-12-17 | 2021-04-09 | 杭州和利时自动化有限公司 | Data transmission method, data transmission device, and storage medium |
| CN113891448A (en) * | 2021-09-15 | 2022-01-04 | 国网福建省电力有限公司福州供电公司 | Ad hoc network communication method and terminal |
| CN113891448B (en) * | 2021-09-15 | 2024-02-27 | 国网福建省电力有限公司福州供电公司 | Ad hoc network communication method and terminal |
| CN115102681A (en) * | 2022-06-17 | 2022-09-23 | 宁波义钛工业物联网有限公司 | Data transmission method, device and equipment |
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