CN101510886B - Method and apparatus for processing message of MP group - Google Patents
Method and apparatus for processing message of MP group Download PDFInfo
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- CN101510886B CN101510886B CN200910127218A CN200910127218A CN101510886B CN 101510886 B CN101510886 B CN 101510886B CN 200910127218 A CN200910127218 A CN 200910127218A CN 200910127218 A CN200910127218 A CN 200910127218A CN 101510886 B CN101510886 B CN 101510886B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/90—Buffering arrangements
- H04L49/9084—Reactions to storage capacity overflow
- H04L49/9089—Reactions to storage capacity overflow replacing packets in a storage arrangement, e.g. pushout
- H04L49/9094—Arrangements for simultaneous transmit and receive, e.g. simultaneous reading/writing from/to the storage element
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/43—Assembling or disassembling of packets, e.g. segmentation and reassembly [SAR]
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Abstract
The embodiment of the invention relates to a message processing method applied to a multi-link protocol (MP) group and a device thereof. The message processing method applied to the multi-link protocol (MP) group comprises the following steps: whether a first fragment message received is the initial fragment message or not is judged; if not, the first fragment message is stored and subsequent fragment messages are received; and when the fragment message received is the initial fragment message and the initial fragment message is confirmed to be the initial fragment message required by the entry of packet working state, the entry of packet working state is realized according to the initial fragment message. Under the condition that the initial fragment message is received a little late due to the link time delay of the first message after the MP group is started, the method can prevent the whole message from losing, perfect the normal start process of the MP group and increase the accuracy of the MP group packet.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of message processing method and device that is applied to the MP group.
Background technology
Point-to-point protocol (Point-to-Point Protocol; PPP) in use produced a kind of multi-link protocol (Multilink Protocol of extended attribute; MP); Its principle be with a plurality of physically independently ppp link externally show as a logical links through binding, these several physical channels are called MP group.The packet that on the MP group, transmits can be earlier by burst, the B mark position 1 in the burst; E mark position 1 in the tail burst; All packet segments in the same MP group can be according to the incremental order numbering, successively burst is sent to each sub-links by sequence number then and uploads and send.In MP group, because possibly there is difference in the actual time delay of the different links of binding, the burst that successively sends by sequence number can not arrive according to sending successively when arriving receiving terminal through the time-delay of different links, therefore possibly produce out of order phenomenon.And just started in the course of work in the MP group; Because the existence of out of order phenomenon, first burst that receives can not be a burst often, if abandon this burst; Then first bag can not correctly receive; As to guarantee that first bag can correctly receive, and then need preserve first even more non-burst, this will bring a variety of abnormal conditions again.
Prior art has just started the process of the back having been handled by burst to MP and has simplified, and receives that promptly first burst if not a burst, then abandons this burst, and with the sequence number of this burst as initial comparison value; To the burst of next receiving,, then abandon these bursts, and initial comparison value remains unchanged if sequence number is little compared with the beginning comparison value; If the burst sequence number that receives is big compared with the beginning comparison value, then initial comparison value is updated to the sequence number of the current burst that receives, and preserves the corresponding burst of this initial comparison value, the burst of preserving is before abandoned.When according to above-mentioned relatively renewal process, be a stature burst if detect the corresponding burst of initial comparison value bigger than last initial comparison value, then find a burst, finish start-up course, get into normal group job contract and make state.
There is following shortcoming at least in the prior art of more than describing: when the time-delay that exists owing to link causes a burst of first burst place packet only to postpone very little time arrival receiving terminal than first burst; Because the sequence number of this burst is little compared with the beginning comparison value; Therefore this burst also can only be dropped; First packet just can not be organized bag like this, thereby influences the accuracy of MP group group bag.
Summary of the invention
The embodiment of the invention provides a kind of message processing method and device of the MP of being applied to group, to improve the accuracy of MP group group bag.
According to the one side of the embodiment of the invention, a kind of message processing method that is applied to multi-link protocol MP group is provided, comprising:
Judge whether first fragment message that receives is a fragment message;
If not, to store said first fragment message, and receive follow-up fragment message, the time full when memory space or a wait fragment message abandons the minimum fragment message of test serial number in the fragment message of having stored when surpassing the time threshold of setting;
The fragment message when surpassing SNmax with the quantity of the fragment message of the corresponding fragment message of the test serial number before the current maximum message segment sequence number that has abandoned, reception and/or the fragment message of test serial number repetition are unusual fragment message; Wherein, SNmax=B * T/ (N * 8); B is a bandwidth, and T is a link time-delay index, and N is the length of minimum fragment message; If the fragment message that receives is unusual fragment message, abandon said fragment message; Or reach threshold value if the fragment message that receives is the quantity of unusual fragment message, abandon all fragment messages of having stored to receive fragment message again;
When the fragment message that receives is a fragment message, and when confirming that said fragment message made required the fragment message of state for the job contract of entering group, gets into said group of job contract based on said fragment message and make state.
According to the embodiment of the invention on the other hand, a kind of message process device that is applied to multi-link protocol MP group is provided, has comprised:
Receiver module is used to receive the fragment message that transmits on the MP group, when the abnormality processing module abandons the fragment message of all storages, receives the fragment message that transmits on the MP group again;
Judge module is used to judge whether first fragment message that said receiver module receives is a fragment message;
Search processing module; Be used for when said judge module judges that said first fragment message is not fragment message; Store said first fragment message, the time full when memory space or a wait fragment message abandons the minimum fragment message of test serial number in the fragment message of having stored when surpassing the time threshold of setting; And receive the follow-up fragment message that said receiver module receives; And when the fragment message that receive be a fragment message, and when confirming that said fragment message made required the fragment message of state for the job contract of entering group, get into said group according to said fragment message and undertake to perform work within a time limit and according to specifications and make state;
The abnormality processing module, the fragment message when being used for quantity with the fragment message of the corresponding fragment message of the test serial number before the current maximum message segment sequence number that has abandoned, reception and surpassing SNmax and/or the fragment message of test serial number repetition are unusual fragment message, wherein; SNmax=B * T/ (N * 8); B is a bandwidth, and T is a link time-delay index, and N is the length of minimum fragment message; When the said fragment message of searching the processing module storage is unusual fragment message; Abandon said fragment message, or be used for when quantity that the said fragment message of searching processing module storage is unusual fragment message reaches threshold value, abandoning the fragment message of all storages.
The technical scheme of the embodiment of the invention; After the MP group has just started; Possibly cause its fragment message to arrive a little later owing to the link time-delay for first message, in this case, can guarantee that through present embodiment whole message can not be dropped; The normal process that starts of MP group is carried out perfect, improve the accuracy of MP group group bag.
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 to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of first embodiment of the message processing method that is applied to multi-link protocol MP group of the present invention;
Fig. 2 is the sequence number space sketch map of the embodiment of the invention;
Fig. 3 is the state machine diagram of second embodiment of the message processing method that is applied to multi-link protocol MP group of the present invention;
Fig. 4 is the structural representation of first embodiment of the message process device that is applied to multi-link protocol MP group of the present invention;
Fig. 5 is the structural representation of second embodiment of the message process device that is applied to multi-link protocol MP group of the present invention;
Fig. 6 is the structural representation of the embodiment of the message handling system that is applied to multi-link protocol MP group of the present invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The embodiment of the invention has adopted a kind of message processing method of considering the multi-link protocol under the multiple condition (MP) group, realizing all normally starting the MP group under the multiple condition, and accomplishes the method that the group job contract of message is done, and automatically reset function is provided.
Fig. 1 is for the schematic flow sheet of first embodiment of the message processing method that is applied to multi-link protocol MP group of the present invention, and is as shown in Figure 1, comprises the steps:
Wherein, Each fragment message has test serial number; After one group of message is each fragment message by burst; To be sent to according to the mode that the test serial number order increases progressively on the multilink of MP group and transmit, and test serial number for the fragment message with this group be initial be that smallest sequence number, tail fragment message serve as that to finish be maximum sequence number.
Because possibly there is difference in the actual time delay of different links of binding; Though transmitting terminal is to send according to the incremental order of test serial number; But possibly will produce out of order when arriving receiving terminal; Be that first fragment message that receiving terminal receives possibly not be a fragment message, just need this moment receiving terminal to judge when just having started in the MP group; Confirming and to judge through the B mark position 1 in the burst for a fragment message.
Be a fragment message if arrive the fragment message of receiving terminal at first, when then receiving terminal receives other fragment messages that transmit on the MP group again, just can organize job contract normally and do based on this fragment message; If in normal group job contract is done; B flag bit through fragment message is judged when receiving the other end fragment message again; Equally with its storage, treat that the data packet group bag is accomplished under the first stature fragment message after, according to this other end fragment message the packet under it is packaged again.
If because the actual time delay of link; Non-the fragment message of first fragment message that causes receiving terminal to receive; Then receiving terminal can be earlier with this first fragment message storage; And then from follow-up fragment message that receives and the fragment message stored, search a fragment message, make state thereby can get into normal group job contract based on a follow-up fragment message that finds.
Wherein normal group job contract is made state and simply is described as: the test serial number that points to the head pointer indicating head fragment message of fragment message; And in the follow-up fragment message that receives, search test serial number and increase progressively and add one fragment message; Promptly head pointer also increased progressively and added one this moment, thereby packet was pressed the der group bag of test serial number successively.Do under the state in normal group job contract; Also can to occur organizing bag to a fragment message unsuccessful and overtime and normally abandon fragment message, abandon exception message or receive the situation such as processing of other end fragment message again always; This moment, the operation to fragment message can preestablish, and was not described in detail in this.
The message processing method that is applied to multi-link protocol MP group that present embodiment provides; After MP group has just started, get into before normal group job contract makes state, possibly cause its fragment message to arrive a little later because link is delayed time for first message; In this case; Can guarantee that through present embodiment whole message can not be dropped, the normal process that starts of MP group carried out perfect, improve the accuracy of MP group group bag.
Before the message processing method that is applied to multi-link protocol MP group of specifically introducing embodiment of the invention description, at first the condition that normally abandons to fragment message is illustrated with unusual defining of fragment message.
At first set the condition that normally abandons of fragment message, as consider following two, but be not limited to the operation that normally abandons fragment message that following two conditions are brought:
(1) transmitting terminal with message fragment after; Different fragment messages is through the delay of different links; The sequencing that receiving terminal receives is inconsistent with the sequencing of the test serial number of each fragment message; This has just caused out of order existence, and for the priority of out of order fragment message according to test serial number packaged, then need carry out the storage of the fragment message of a constant volume.Yet the memory space of any receiving terminal is not infinitely-great, therefore in some cases, when the out of order fragment message that receives exceeds the memory capacity of receiving terminal, will carry out normal discard processing to fragment message;
(2) reception is brought in; Must fragment message be packaged according to the order of test serial number; And then be sent to and follow-uply carry out handled, if promptly for a message of front, receiving terminal is also when waiting for that its all fragment message all arrives; Even if all fragment messages of a message of back all arrive, the work that the message of back can not package.So, the overlong time of between each fragment message of a message of front, waiting for will cause serious obstruction to the message group package of back.Particularly occur unusually when link, cause the part fragment message in the message of front to be lost, the fragment message of then losing will wait forever less than.Therefore, receiving terminal just needs a timeout treatment mechanism, promptly need set a time threshold, when waiting for that fragment message has surpassed the value of indirect thresholding this moment, then to carrying out discard processing with the relevant fragment message of waiting for of fragment message.This time threshold can be delayed time with reference to the maximum link that can tolerate and set.
In addition, also need define unusual fragment message:
(1) the unduplicated unusual burst of sequence number.MP slice header form can stipulate that wherein the MP burst can adopt two kinds of serial number space methods of salary distribution with reference to RFC-1990, promptly long sequence number and short sequence number mode; Wherein long sequence number is represented with 24 bits; Short sequence number representes that with 12 bits transmitting terminal is that fragment message is formulated and submitted civilian sequence number according to the time order and function order, promptly increases progressively since 0 to add 1; As count down to the maximum of serial number space, then get back to 0 and restart numbering.Fig. 2 is the sequence number space sketch map of the embodiment of the invention, is example with the short sequence number of 12 bit identification, and maximum serial number space is 2
12=4096, serial number space is the circulation of a sealing.
As shown in Figure 2, sn=0 is the starting point of serial number space, and when sending fragment message, the test serial number of the fragment message that in chronological sequence sends increases progressively and adds one, and behind circulation one circle, when sn=4095, ensuing sn will become 0 again.Suppose that cur_sn representes the fragment message of the current maximum message segment sequence number that has abandoned; If the memory space of storage fragment message exhausts or the stand-by period of fragment message exceeds preset threshold; Then little than cur_sn test serial number fragment message is dropped, and cur_sn is current test serial number comparison value; The test serial number of the next fragment message that receives of receiving terminal is next_sn.Can be divided into two parts to whole serial number space this moment, and the scope in first space is [cur_sn, cur_sn+2048], and the dash area scope was [0, cur_sn] and [cur_sn+2048,4095] during second portion was promptly schemed.From figure, can analyze, because serial number space is the closed loop configuration of circulation, so the test serial number of the next_sn fragment message that can think to send out behind the cur_sn, also can think the test serial number of the fragment message before cur_sn simultaneously.From probability, if next_sn drops on first's window, can think that then next_sn is a cur_sn burst sequence number afterwards, if next_sn drops on the second portion window, can think that then next_sn is a cur_sn burst sequence number before.For the corresponding fragment message of the test serial number before the cur_sn, think unusual fragment message, carry out discard processing; And, think normal fragment message for the corresponding fragment message of the test serial number after the cur_sn, it is received and stores.Therefore the window ranges of this unusual fragment message can be set at the second portion window.
In addition; The setting of the window ranges of this unusual fragment message also need be considered the bandwidth and the tolerable link time-delay index of MP group; If bandwidth is B (bit/s); Link time-delay index is T (s), and the length of minimum fragment message is N byte, and is then individual at the quantity SNmax=B * T/ (N * 8) of T receivable maximum fragment message in the time.Therefore, if can think that the quantity of the fragment message that receives has surpassed SNmax, then must have unusual burst to exist.In such cases, the window of unusual fragment message should be set to (cur_sn, cur_sn+SNmax).
Comprehensive above-mentioned two aspects consider that if the serial number space of fragment message is S, then the size of the window of unusual fragment message should be set to (cur_sn, cur_sn+min (S/2, SNmax)), the i.e. minimum value of S/2 and SNmax.
(2) the unusual burst of sequence number repetition.Because it all is unique that transmitting terminal is numbered the test serial number of each fragment message, have only when the serial number space meter and expire, when upset took place test serial number, the test serial number of fragment message just possibly repeat.And generally speaking, the quantity of the fragment message of a message after by burst can be less than the quantity of the sequence number that serial number space had, and therefore, the situation that the test serial number of the fragment message of same message repeats can not occur.When receiving terminal receives the fragment message of test serial number repetition; Can't tell the sequencing that transmitting terminal sends fragment message; Then need abandon the fragment message that received afterwards or cover the fragment message that receives before, this will inevitably cause group to contract out mistake.Therefore the fragment message of this test serial number repetition also is unusual fragment message.In addition, when producing error code in the link transmission, also may cause test serial number identical, thereby produce unusual fragment message.
The condition that normally abandons that it is pointed out that the fragment message of above-mentioned introduction is not to qualification of the present invention, can specifically limit the different conditions that normally abandons according to condition of different; Defining also of exception message can be defined the exception message that belongs to which test serial number through general probability statistics, and the mode of describing in the embodiment of the invention is not to qualification of the present invention.
Fig. 3 is the state machine diagram of second embodiment of the message processing method that is applied to multi-link protocol MP group of the present invention.Through this state machine the situation that the MP group starts under the various conditions can be described clearly.As shown in Figure 3, at first the various states to this state machine carry out simple declaration:
The EMPTY state: init state, under P1, P2, P3, NORMAL state, when continuously unusual fragment message statistics reaches threshold value, then abandon all fragment messages, get back to this EMPTY state, i.e. auto-reset function;
The P1 state: under the EMPTY state, as to receive first fragment message be non-fragment message, promptly changes the P1 state over to;
The P2 state: normally abandon condition when satisfying, some fragment messages are dropped, and then change the P2 state over to;
P3 state: under the P1 state; When the minimum test serial number of the test serial number that receives fragment message to the end and this fragment message greater than the fragment message that has received; Perhaps receive under the P2 state fragment message to the end and this fragment message sequence number in normal receive window scope and the test serial number of this fragment message greater than the minimum test serial number that receives fragment message, then get into the P3 state;
The NORMAL state: i.e. normal group bag state under the EMPTY state, receives the i.e. fragment message of first fragment message; Perhaps under P1, P2, P3 state, the test serial number of receiving a fragment message and this fragment message is in normal receive window scope, and the test serial number of this fragment message is less than the minimum test serial number of the current fragment message that has received; Perhaps under the P3 state, satisfy normally abandoning condition, carry out fragment message and abandon,, then get into the NORMAL state until meet a stature fragment message.
The condition of redirect comprises shown in the arrow among Fig. 3 between each state:
(1) condition 1.1: receiving fragment message is a fragment message, stores this fragment message, gets into the NORMAL state.
Condition 1.2: receiving fragment message is non-fragment message, stores this fragment message, gets into the P1 state.
(2) condition 2.1: receiving fragment message is normal fragment message, and non-fragment message, and then this normal fragment message of storage is got back to the P1 state; Perhaps receiving fragment message is unusual fragment message, then abandons this unusual fragment message, gets back to the P1 state.
Condition 2.2: receiving fragment message is a fragment message, and the test serial number of a fragment message is then stored this fragment message less than the minimum test serial number of storing fragment message, entering NORMAL state.
Condition 2.3: receiving fragment message is a fragment message, and the test serial number of a fragment message is then stored this fragment message greater than the minimum test serial number of storing fragment message, entering P3 state.
Condition 2.4: when satisfying the condition that normally abandons, then begin to abandon,, get into the P2 state until the condition that normally abandons does not satisfy from the corresponding fragment message of current minimum test serial number.
Condition 2.5: when the continuous quantity statistics of fragment message unusually reaches threshold value, then begin to abandon from the corresponding fragment message of current minimum test serial number, all fragment messages that always will store all abandon and finish, and get back to the EMPTY state.
(3) condition 3.1: when satisfying the condition that normally abandons, then begin to abandon from the corresponding fragment message of current minimum test serial number, until the condition that normally abandons does not satisfy, get back to the P2 state; Perhaps receive normal fragment message, and non-fragment message, then store this fragment message, get back to the P2 state; Perhaps receive unusual fragment message, then abandon this fragment message, get back to the P2 state.
Condition 3.2: when receiving fragment message to the end, and the test serial number of a fragment message is within normal receive window, and less than the minimum test serial number of storing fragment message, then stores this fragment message, gets into the NORMAL state.
Condition 3.3: when the quantity statistics of the unusual fragment message of continuous reception reaches threshold value, then begin, abandon all fragment messages, get back to the EMPTY state from the corresponding fragment message of the minimum test serial number of current storage.
Condition 3.4: when receiving normal fragment message, and be a fragment message, and the test serial number of this fragment message then stores this fragment message greater than the minimum test serial number of the fragment message of having stored, get into the P3 state.
(4) condition 4.1: when receiving normal fragment message, and the test serial number of this fragment message then stores this fragment message greater than the minimum test serial number of the fragment message of having stored, gets back to the P3 state; Perhaps receive unusual fragment message, then abandon unusual fragment message, get back to the P3 state.
Condition 4.2: when receiving normal fragment message, and be a fragment message, and the test serial number of this fragment message then stores this fragment message less than the minimum test serial number of storing fragment message, get into the NORMAL state; The condition that perhaps ought normally abandon fragment message satisfies, and then begins to abandon from the corresponding fragment message of the minimum test serial number of current storage, is discarded into always and meets a fragment message of having stored, gets into the NORMAL state.
Condition 4.3: when the quantity statistics of the unusual fragment message of continuous reception reaches threshold value, then begin, abandon all fragment messages, get back to the EMPTY state from the corresponding fragment message of the minimum test serial number of current storage.
(5) condition 5.1: in the normal group bag, receive normal fragment message, completion group bag is handled, and gets back to the NORMAL state; Perhaps receive unusual fragment message, then abandon this fragment message, get back to the NORMAL state.
Condition 5.2: when the quantity statistics of the unusual fragment message of continuous reception reaches threshold value, then the minimum test serial number burst from current storage begins, and abandons all fragment messages, gets back to the EMPTY state.
The normal startup of this MP group, promptly from EMPTY to NORMAL, having 5 kinds of conditions can realize;
Also have 4 kinds of conditions to make in addition and return EMPTY from P1, P2, P3 and NORMAL, i.e. the realization of auto-reset function.To introduce in detail according to this state machine below.
First kind of EMPTY is to the situation (1.1) of NORMAL
The MP group just starts; Receiving terminal receives first fragment message when being fragment message of one group of message; Store this fragment message and get into normal group job contract and make state, this fragment message has promptly been arranged, the work that just can find the follow-up fragment message of this group message to package.
Second kind of EMPTY is to the situation (1.2-＞2.2) of NORMAL
The MP group just starts, and it is not a fragment message that receiving terminal receives first fragment message, then stores this first fragment message, gets into the P1 state; Under the P1 state, continue to receive fragment message, if receive be normal fragment message and non-fragment message, then storage if the fragment message that receives is unusual fragment message, then abandons this unusual fragment message; When receiving to the end fragment message,, the test serial number of this fragment message makes state if, then storing this fragment message less than the minimum test serial number in the fragment message of having stored and get into normal group job contract.For example: one group of message is divided into 8; The test serial number of fragment message is respectively 0～7; If the test serial number of the fragment message that receives is followed successively by 1,3,7,0,2,5,6,4, receiving terminal is stored when test serial number is 1,3,7 fragment message receiving successively so, when to receive test serial number be 0 fragment message; Through can know a fragment message that is that obtains this moment to the judgement of B flag bit; And the test serial number of this fragment message less than before the minimum test serial number 1 of the fragment message that receives, then store this fragment message and get into normal group job contract and make state, promptly receive behind the subsequent packet according to numeric order group bag.
The third EMPTY is to the situation (1.2-＞2.4-＞3.2) of NORMAL
The MP group just starts, and it is not a fragment message that receiving terminal receives first fragment message, then stores this first fragment message, gets into the P1 state.
Under the P1 state, continue to receive fragment message, if receive be normal fragment message and non-fragment message, then store and get back to the P1 state; If the fragment message that receives is unusual fragment message, then abandons this unusual fragment message and get back to the P1 state; When the fragment message of judging storage satisfies when abandoning condition normally; Promptly possibly the receiving terminal finite storage space expire or the overlong time of a wait fragment message; Then begin to abandon from the current corresponding fragment message of having stored of minimum test serial number; Until no longer satisfy the condition that abandons normally, get into the P2 state.
Under the P2 state; Continue to receive fragment message,, then begin to abandon from the current corresponding fragment message of having stored of minimum test serial number if the fragment message of storage satisfies again when abandoning condition normally; Abandon normally till the condition until no longer satisfy, get back to the P2 state; Perhaps if receive be normal fragment message and non-fragment message, then store this fragment message, get back to the P2 state; The fragment message that perhaps receives is unusual fragment message, then abandons this unusual fragment message, gets back to the P2 state.
In follow-up reception again; Receive fragment message to the end; If the test serial number of this fragment message within normal fragment message window and test serial number less than the minimum test serial number in the fragment message of having stored, then store this fragment message and get into normal group job contract and make state.
The 4th kind of EMPTY is to the situation (1.2-＞2.3-＞4.2) of NORMAL
The MP group just starts, and it is not a fragment message that receiving terminal receives first fragment message, then stores this first fragment message, gets into the P1 state.
Under the P1 state, continue to receive fragment message, if receive be normal fragment message and non-fragment message, then store and get back to the P1 state; If the fragment message that receives is unusual fragment message, then abandons this unusual fragment message and get back to the P1 state; When the fragment message of storage does not also satisfy when abandoning condition normally; When just receiving to the end fragment message; If the test serial number of this fragment message within normal fragment message window and test serial number greater than the minimum test serial number in the fragment message of having stored, then store this fragment message and get into the P3 state.Like second kind of EMPTY for example concrete under the situation of NORMAL; Be that to also have the test serial number of a component sheets message behind one group of message of 0～7 be one group of message of 8～15 when test serial number at fragment message; Then at receiving terminal after to receive test serial number successively be 1,3,7 fragment message; May receive test serial number and be 8 fragment message; A fragment message of one group of message promptly, the test serial number of this fragment message are then stored this fragment message and are got into the P3 state greater than the minimum test serial number in the fragment message of having stored.
Under the P3 state, continue to receive fragment message, when receiving normal fragment message, and the test serial number of this fragment message then stores this fragment message greater than the minimum test serial number of the fragment message of having stored, gets back to the P3 state; Perhaps receive unusual fragment message, then abandon unusual fragment message, get back to the P3 state.When receiving the other end fragment message again,, the test serial number of this other end fragment message makes state if, then storing this other end fragment message less than the minimum test serial number in the fragment message of having stored and get into normal group job contract; Perhaps when receiving and the fragment message of storage satisfies when abandoning condition normally once more; Can from the fragment message of having stored, begin to abandon by the minimum fragment message of test serial number; The fragment message that the minimum fragment message of test serial number is stored before being in the fragment message of storage then gets into normal group job contract and makes state.Entering under the P3 state, continue to receive fragment message, when to receive test serial number again be 0 fragment message, then getting into normal group job contract and make state when follow-up; The perhaps follow-up test serial number that never receives is a fragment message of 0; And satisfy when abandoning condition normally again; Then the minimum fragment message of test serial number begins to abandon from the fragment message of having stored; In the fragment message of storage the minimum fragment message of test serial number for before the test serial number of storage when being 8 fragment message, also can get into normal group of job contract and make state.
The 5th kind of EMPTY is to the situation (1.2-＞2.4-＞3.4-＞4.2) of NORMAL
The MP group just starts, and it is not a fragment message that receiving terminal receives first fragment message, then stores this first fragment message, gets into the P1 state.
Under the P1 state, continue to receive fragment message, if receive be normal fragment message and non-fragment message, then store and get back to the P1 state; If the fragment message that receives is unusual fragment message, then abandons this unusual fragment message and get back to the P1 state; When the fragment message of judging storage satisfies when abandoning condition normally; Promptly possibly the receiving terminal finite storage space expire or the overlong time of a wait fragment message; Then begin to abandon from the current corresponding fragment message of having stored of minimum test serial number; Until no longer satisfy the condition that abandons normally, get into the P2 state.
Under the P2 state; Continue to receive fragment message,, then begin to abandon from the current corresponding fragment message of having stored of minimum test serial number if the fragment message of storage satisfies again when abandoning condition normally; Abandon normally till the condition until no longer satisfy, get back to the P2 state; Perhaps if receive be normal fragment message and non-fragment message, then store this fragment message, get back to the P2 state; The fragment message that perhaps receives is unusual fragment message, then abandons this unusual fragment message, gets back to the P2 state.
In follow-up reception again; If when receiving to the end fragment message; If the test serial number of this fragment message within normal fragment message window and test serial number greater than the minimum test serial number in the fragment message of having stored, then store this fragment message and get into the P3 state.
Under the P3 state, continue to receive fragment message, when receiving normal fragment message, and the test serial number of this fragment message then stores this fragment message greater than the minimum test serial number of the fragment message of having stored, gets back to the P3 state; Perhaps receive unusual fragment message, then abandon unusual fragment message, get back to the P3 state.When receiving the other end fragment message again,, the test serial number of this other end fragment message makes state if, then storing this other end fragment message less than the minimum test serial number in the fragment message of having stored and get into normal group job contract; Perhaps when receiving and the fragment message of storage satisfies when abandoning condition normally once more; Can from the fragment message of having stored, begin to abandon by the minimum fragment message of test serial number; The fragment message that the minimum fragment message of test serial number is stored before being in the fragment message of storage then gets into normal group job contract and makes state.
Also have 4 kinds of conditions (2.5,3.3,4.3 and 5.2) to make in addition and return EMPTY from P1, P2, P3 and NORMAL, i.e. the realization of auto-reset function.Condition as shown in Figure 3 2.5,3.3,4.3 and 5.2 times; If the fragment message that receives in corresponding P1, P2, P3 and the NORMAL state is unusual fragment message continuously, the quantity of then adding up unusual fragment message is if reach threshold value; Then abandon all fragment messages, the MP group restarts.Wherein the threshold value of the quantity of arrangement abnormalities fragment message can be set the maximum burst quantity of a message fragment with reference to transmitting terminal, maximum burst quantity Calculation formula can for: it is long that maximum reorganization receives long (the MRRU)/minimum fragment packets of bag.Then this threshold value can be made as 1～2 times of size of maximum burst quantity.
The message processing method that is applied to multi-link protocol MP group that present embodiment provides; After the MP group has just started; Possibly cause its fragment message to arrive a little later owing to the link time-delay for first message, in this case, can guarantee that through present embodiment whole message can not be dropped; When receiving unusual fragment message, can guarantee that receiving terminal can not abandon the situation of normal fragment message in a large number in addition; As occurring a large amount of unusual fragment messages in the fragment message that receives at receiving terminal, also can guarantee in time to find and automatically reset function can be provided, thereby guarantee that the MP group can start normally.The embodiment of the invention has been carried out perfect to the normal process that starts of MP group, improved the accuracy of MP group group bag.
Fig. 4 is the structural representation of first embodiment of the message process device that is applied to multi-link protocol MP group of the present invention.As shown in Figure 4, this device comprises: receiver module 41, judge module 42, stores processor module 43 and search processing module 44.Wherein, receiver module 41 is used to receive the fragment message that transmits on the MP group; Judge module 42 is used to judge whether first fragment message that receiver module 41 receives is a fragment message; When judging that first fragment message is fragment message; Notice stores processor module 43 is stored the follow-up fragment message that receiver module 41 receives successively; And when judging that first fragment message is not fragment message, notice is searched processing module 44 these first fragment messages of storage, and stores the follow-up fragment message that receiver module 41 receives; Stores processor module 43 is used for when judge module 42 judges that first fragment messages are fragment messages, storing this fragment message, and storing the follow-up fragment message that receiver module 41 receives successively, and state is made in the job contract of entering group; Searching processing module 44 is used for when judge module 42 judges that first fragment messages are not fragment messages; Store first fragment message; And receive the follow-up fragment message of said receiver module 41; And when the fragment message that receive be a fragment message, and when confirming that said fragment message made required the fragment message of state for the job contract of entering group, get into said group according to said fragment message and undertake to perform work within a time limit and according to specifications and make shape.Wherein each fragment message has test serial number, after message is each fragment message by burst, will sends to according to the mode that the test serial number order increases progressively on the MP group and transmit, and be that initial, tail fragment message is end with a fragment message.
The message process device that is applied to multi-link protocol MP group that present embodiment provides can place the equipment of the receiving terminal of message, or is connected with receiving terminal as independent equipment; Normal realization such as the above-mentioned MP that starts the concrete function of each module in the setting device of this MP group organizes the specific descriptions among the normal startup method embodiment, repeats no more at this.
The message process device that is applied to multi-link protocol MP group that present embodiment provides; After the MP group has just started; Possibly cause its fragment message to arrive a little later owing to the link time-delay for first message, in this case, can guarantee that through present embodiment whole message can not be dropped; The normal process that starts of MP group is carried out perfect, improve the accuracy of MP group group bag.
Fig. 5 is the structural representation of second embodiment of the message process device that is applied to multi-link protocol MP group of the present invention.As shown in Figure 5, this device comprises receiver module 41, judge module 42, the stores processor module of describing in the foregoing description 43 and searches processing module 44.
Wherein searching processing module 44 specifically can comprise: first memory cell 441 is used for when judge module 42 judges that first fragment messages are not fragment messages, storing first fragment message, and receiving the follow-up fragment message that receiver module 41 receives; First processing unit 442; Be used for when confirming that the fragment message that said first memory cell receives is a fragment message; And when confirming that said fragment message made required the fragment message of state for entering group job contract, get into said group of job contract according to said fragment message and make state.When first processing unit 442 confirms that according to B mark position 1 the follow-up fragment message of first memory cell, 441 receptions is this fragment message; And if the test serial number of this fragment message less than the minimum test serial number in the fragment message of having stored; Notify said first memory cell, 441 storages said fragment message, and state is made in the normal group job contract of entering; If the test serial number of this fragment message, is notified said first memory cell said fragment message of 441 storages greater than the minimum test serial number in the fragment message of having stored and is continued to receive follow-up fragment message; When confirming that follow-up fragment message that first memory cell 441 receives is this other end fragment message; If the test serial number of other end fragment message is less than the minimum test serial number in the fragment message of having stored; Notify said first memory cell, 441 storage said other end fragment messages and continue to receive follow-up fragment message, state is made in the job contract of entering group.
Searching processing module 44 can also comprise: discard processing unit 443, the fragment message that is used in the storage of first memory cell 441 satisfies when abandoning condition normally, begins to abandon the fragment message of having stored of some from the minimum fragment message of test serial number.Wherein a kind of situation does; Before first processing unit 442 is searched to the end fragment message; When the fragment message of first memory cell 441 storage satisfies when abandoning condition; The minimum fragment message of test serial number begins to abandon the fragment message of some from the fragment message of having stored, continues the storage fragment message then and searches a fragment message; Another kind of situation does; After first processing unit 442 has found the fragment message of test serial number greater than the minimum test serial number in the fragment message of having stored; The fragment message that first memory cell 441 continues storage satisfies when abandoning condition normally; Then the minimum fragment message of test serial number begins to abandon fragment message from the fragment message of having stored, is discarded into always that the minimum fragment message of test serial number is till the fragment message of this storage in the fragment message of storage.
Wherein stores processor module 43 specifically can comprise: second memory cell 431 is used for when judge module 42 judges that first fragment messages are fragment messages, storing this fragment message, and storing the follow-up fragment message that receiver module 41 receives successively; Second processing unit 432 is used for that the fragment message of second memory cell, 431 storages is organized job contract normally and does.In the present embodiment, during the storage fragment message, can heading in the message and message data be done as a whole the storage, can carry out separate storage, promptly distinguish the heading and the message data of stored messages heading in the message and message data.
This is searched processing module 44 and can also comprise: abnormality processing module 444 is used for when the fragment message that detects 441 storages of first memory cell is unusual fragment message, abandoning this fragment message; Also be used for when the fragment message that detects 441 storages of first memory cell be the quantity of unusual fragment message when reaching threshold value, abandon all fragment messages of first memory cell, 441 storages, and restart the fragment message that receiver module 41 receives transmission on the MP groups.
The realization such as the above-mentioned MP of the concrete function of each module in the message process device that is applied to multi-link protocol MP group that present embodiment provides organize the specific descriptions among the normal startup method embodiment, repeat no more at this.
The message process device that is applied to multi-link protocol MP group that present embodiment provides; After the MP group has just started; Possibly cause its fragment message to arrive a little later owing to the link time-delay for first message, in this case, can guarantee that through present embodiment whole message can not be dropped; When receiving unusual fragment message, can guarantee that receiving terminal can not abandon the situation of normal fragment message in a large number in addition; As occurring a large amount of unusual fragment messages in the fragment message that receives at receiving terminal, also can guarantee in time to find and automatically reset function can be provided, thereby guarantee that the MP group can start normally.The embodiment of the invention has been carried out perfect to the normal process that starts of MP group, improved the accuracy of MP group group bag.
Fig. 6 is the structural representation of the embodiment of the message handling system that is applied to multi-link protocol MP group of the present invention.This system comprises: transmitting terminal 61, and be used for message is carried out fragment process, and the fragment message behind the burst sent on the MP group transmit, wherein the MP group is a plurality of logical links after the ppp link binding independently physically; Receiving terminal 62 is used to receive the fragment message that transmits on the MP group; And, can place the existing equipment of the receiving terminal 62 of message like Fig. 4 or the normal setting device 63 that starts of MP group shown in Figure 5, or be connected with receiving terminal 62 as independent equipment, be used for the fragment message that receiving terminal 62 receives is handled.
The realization such as above-mentioned that present embodiment provides is applied to the concrete function of each device in the message handling system of multi-link protocol MP group is applied to the specific descriptions among the message processing method embodiment of multi-link protocol MP group, repeats no more at this.The embodiment of the invention has been carried out perfect to the normal process that starts of MP group, improved the accuracy of MP group group bag.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method; Be to instruct relevant hardware to accomplish through computer program; Described program can be stored in a computer and can obtain in the storage medium; This program can comprise the flow process like the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-OnlyMemory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, 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 are revised or replacement, do not make the spirit and the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (10)
1. a message processing method that is applied to multi-link protocol MP group is characterized in that, comprising:
Judge whether first fragment message that receives is a fragment message;
If not, to store said first fragment message, and receive follow-up fragment message, the time full when memory space or a wait fragment message abandons the minimum fragment message of test serial number in the fragment message of having stored when surpassing the time threshold of setting;
The fragment message when surpassing SNmax with the quantity of the fragment message of the corresponding fragment message of the test serial number before the current maximum message segment sequence number that has abandoned, reception and/or the fragment message of test serial number repetition are unusual fragment message; Wherein, SNmax=B * T/ (N * 8); B is a bandwidth, and T is a link time-delay index, and N is the length of minimum fragment message; If the fragment message that receives is unusual fragment message, abandon said fragment message; Or reach threshold value if the fragment message that receives is the quantity of unusual fragment message, abandon all fragment messages of having stored to receive fragment message again;
When the fragment message that receives is a fragment message, and when confirming that said fragment message made required the fragment message of state for the job contract of entering group, gets into said group of job contract based on said fragment message and make state.
2. method according to claim 1; It is characterized in that; Said when the fragment message that receive be a fragment message, and when confirming that said fragment message made required the fragment message of state for the job contract of entering group, the step that gets into the said group of state of doing of undertaking to perform work within a time limit and according to specifications according to said fragment message comprises:
When receiving to the end fragment message,, the test serial number of said fragment message makes state if, then storing the job contract of said fragment message and entering group less than the minimum test serial number in the fragment message of having stored.
3. method according to claim 1; It is characterized in that; Said when the fragment message that receive be a fragment message, and when confirming that said fragment message made required the fragment message of state for the job contract of entering group, the step that gets into the said group of state of doing of undertaking to perform work within a time limit and according to specifications according to said fragment message comprises:
When follow-up reception to the end during fragment message, if the test serial number of said fragment message, is then stored said fragment message greater than the minimum test serial number in the fragment message of having stored and continued to receive fragment message;
When receiving the other end fragment message,, the test serial number of said other end fragment message makes state if, then storing the job contract of said other end fragment message and entering group less than the minimum test serial number in the fragment message of having stored.
4. method according to claim 1; It is characterized in that; Said when the fragment message that receive be a fragment message, and when confirming that said fragment message made required the fragment message of state for the job contract of entering group, the step that gets into the said group of state of doing of undertaking to perform work within a time limit and according to specifications according to said fragment message comprises:
When follow-up reception to the end during fragment message, if the test serial number of said fragment message, is then stored said fragment message greater than the minimum test serial number in the fragment message of having stored and continued to receive fragment message;
When receiving and the fragment message of storage satisfies when abandoning condition; The minimum fragment message of test serial number begins to abandon from the fragment message of having stored; Minimum said the fragment message of fragment message for storing of test serial number in the fragment message of storage, state is made in the job contract of then entering group.
5. according to claim 3 or 4 described methods, it is characterized in that the step that said fragment message of said storage and continuation receive fragment message comprises:
Whether the fragment message of judging storage satisfies the condition that abandons;
If satisfy, abandon the minimum fragment message of test serial number in the fragment message of having stored.
6. a message process device that is applied to multi-link protocol MP group is characterized in that, comprising:
Receiver module is used to receive the fragment message that transmits on the MP group, when the abnormality processing module abandons the fragment message of all storages, receives the fragment message that transmits on the MP group again;
Judge module is used to judge whether first fragment message that said receiver module receives is a fragment message;
Search processing module; Be used for when said judge module judges that said first fragment message is not fragment message; Store said first fragment message, and receive the follow-up fragment message that said receiver module receives, the time full when memory space or a wait fragment message is when surpassing the time threshold of setting; Abandon the minimum fragment message of test serial number in the fragment message of having stored; And when the fragment message that receive be a fragment message, and when confirming that said fragment message made required the fragment message of state for the job contract of entering group, get into said group according to said fragment message and undertake to perform work within a time limit and according to specifications and make state;
The abnormality processing module, the fragment message when being used for quantity with the fragment message of the corresponding fragment message of the test serial number before the current maximum message segment sequence number that has abandoned, reception and surpassing SNmax and/or the fragment message of test serial number repetition are unusual fragment message, wherein; SNmax=B * T/ (N * 8); B is a bandwidth, and T is a link time-delay index, and N is the length of minimum fragment message; When the said fragment message of searching the processing module storage is unusual fragment message; Abandon said fragment message, or be used for when quantity that the said fragment message of searching processing module storage is unusual fragment message reaches threshold value, abandoning the fragment message of all storages.
7. device according to claim 6 is characterized in that, the said processing module of searching comprises:
First memory cell is used for when said judge module judges that first fragment message is not fragment message, storing first fragment message, and receiving the follow-up fragment message that said receiver module receives;
First processing unit; Be used for when confirming that the fragment message that said first memory cell receives is a fragment message; And when confirming that said fragment message made required the fragment message of state for entering group job contract, get into said group of job contract according to said fragment message and make state.
8. device according to claim 7; It is characterized in that; The test serial number that said first processing unit also is used for confirming said fragment message is during less than the minimum test serial number of the fragment message of having stored; Notify said first cell stores said fragment message, and make state according to said fragment message entering group job contract.
9. device according to claim 7; It is characterized in that; Said first processing unit also be used for if the test serial number of said fragment message greater than the minimum test serial number of the fragment message of having stored; Continue to search the fragment message of storage successively, notify said fragment message of said first cell stores and continue to receive follow-up fragment message; When confirming that another fragment message that said first memory cell receives is the other end fragment message; If the test serial number of said other end fragment message is less than the minimum test serial number in the fragment message of having stored; Notify the said other end of said first cell stores fragment message, make state according to said other end fragment message entering group job contract.
10. device according to claim 7 is characterized in that, the said processing module of searching also comprises:
The discard processing unit is used for satisfying when abandoning condition normally when the fragment message of said first cell stores, and the fragment message minimum from test serial number begins to abandon the fragment message of having stored.
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| CN200910127218A CN101510886B (en) | 2009-03-09 | 2009-03-09 | Method and apparatus for processing message of MP group |
| PCT/CN2010/070922 WO2010102551A1 (en) | 2009-03-09 | 2010-03-09 | Message processing method applied to multilink protocol (mp) bundle and apparatus thereof |
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| SG11201406238UA (en) | 2012-04-05 | 2014-10-30 | Hoffmann La Roche | Bispecific antibodies against human tweak and human il17 and uses thereof |
| CN107864135A (en) * | 2017-11-07 | 2018-03-30 | 山东网智物联网科技有限公司 | The realization device of Internet of Things communication means, device and Internet of Things Network Communication |
| CN112312204B (en) * | 2020-09-30 | 2022-05-24 | 新华三大数据技术有限公司 | Method and device for packaging video stream data fragments |
| CN112383418B (en) * | 2020-11-02 | 2023-07-14 | 北京左江科技股份有限公司 | Design method for high-speed reliable transmission of Ethernet message based on FPGA |
| CN113053380B (en) * | 2021-03-29 | 2023-12-01 | 海信电子科技(武汉)有限公司 | Server and voice recognition method |
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| CN1509025A (en) * | 2002-12-18 | 2004-06-30 | ��Ϊ��������˾ | Method for realizing message partition packet |
| CN1852100A (en) * | 2005-07-22 | 2006-10-25 | 华为技术有限公司 | Method for receiving-end to regroup data bag |
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| US7760737B2 (en) * | 2000-11-30 | 2010-07-20 | Audiocodes, Inc. | Method for reordering and reassembling data packets in a network |
| IL155742A0 (en) * | 2003-05-04 | 2006-12-31 | Teracross Ltd | Method and apparatus for fast contention-free, buffer management in a muti-lane communication system |
| CN101510886B (en) * | 2009-03-09 | 2012-09-05 | 华为技术有限公司 | Method and apparatus for processing message of MP group |
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| CN1509025A (en) * | 2002-12-18 | 2004-06-30 | ��Ϊ��������˾ | Method for realizing message partition packet |
| CN1852100A (en) * | 2005-07-22 | 2006-10-25 | 华为技术有限公司 | Method for receiving-end to regroup data bag |
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