CN101616378A - A kind of terminal and utilize device management protocol to carry out the method for transmission of messages - Google Patents
A kind of terminal and utilize device management protocol to carry out the method for transmission of messages Download PDFInfo
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- CN101616378A CN101616378A CN200910161517A CN200910161517A CN101616378A CN 101616378 A CN101616378 A CN 101616378A CN 200910161517 A CN200910161517 A CN 200910161517A CN 200910161517 A CN200910161517 A CN 200910161517A CN 101616378 A CN101616378 A CN 101616378A
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Abstract
The invention discloses terminal and utilize device management protocol to carry out the method for transmission of messages, terminal is before beginning message session with server by device management protocol, obtain current wireless network state, adjust the size of maximum message length according to described wireless network state; Terminal will be adjusted the described maximum message length of determining the back and send to server, begin message session with server, and both sides carry out transmission of messages according to this maximum message length in conversation procedure.Use terminal of the present invention and method for message transmission, by dynamic adjustment maximum message length value, under the relatively poor or unsettled situation of network condition, can compress the size of the maximum message length of each message, suitably increase mutual number of times, to shorten each mutual used delivery time, can effectively improve mutual success rate.
Description
Technical field
The present invention relates to the equipment control DM protocol technology of open mobile alliance OMA in the communications field, relate in particular to a kind of terminal and utilize device management protocol to carry out the method for transmission of messages.
Background technology
In communication field, the equipment control DM (Device Management) of open mobile alliance OMA (Open Mobile Alliances) is a series of technology, agreement and standards that are used for remote administration terminal equipment.The application of DM is primarily aimed at installation, setting and the analysis of the after-sale service of terminal, particularly valued added applications.
In the data sync and device management techniques of DM agreement, OMA DM agreement is supported the transmission of message, in a DM conversation procedure, needs the reciprocal process of a plurality of message.OMA DM agreement uses maximum message length MaxMsgSize element to specify in the maximum length that each message in the session allows.The size that is each message must not be above the byte number of this maximum message length MaxMsgSize element appointment.If run into the transmission of big object, then need big object disassembled and be a plurality of message, make each message size after disassembling meet the regulation of maximum message length MaxMsgSize.
In OMA DM agreement, the establishing criteria of specifying maximum message length MaxMsgSize is not made specific description, at present, during most realization is used, when specifying the MaxMsgSize value, mainly, described maximum message length MaxMsgSize is fixed as certain value, in each session, all directly quotes the maximum message length MaxMsgSize that this is set to fixed value according to the ability of the single message of terminal processes.
As shown in Figure 1, shown in the present DM agreement flow chart that terminal and server as client carry out session.Immobile phase maximum message length MaxMsgSize value is together all used in each session, and does not consider current network state.
Step S1: server sends Pkg#0 to client, sends Notifacation message, initialize session to client;
Step S2: client sends Pkg# 1, to the server reporting equipment information; In this step, the each session of client reports identical MaxMsgSize, tells the server maximum message bag size that it is supported;
Step S3: server sends Pkg#2, and the customer in response end sends administration order;
Step S4: client sends Pkg#3, sends the administration order execution result;
Step S5: server sends Pkg#4, sends add or the big object command of replace to client, and big object will be divided into a plurality of according to the requirement that is no more than the MaxMsgSize size, send to client successively;
Step S6: client sends Pkg#3, responds big object transmission command;
Step S7:Pkg#4 server continues the big object of transmission;
The step S8:Pkg#3 end of transmission;
Step S9: conversation end.
By above-mentioned conversation procedure as can be known, there is certain defective in the mode of this appointment maximum message length MaxMsgSize size, this mode has only been considered the disposal ability of terminal to single message, and do not make certain adjustment according to different network states, suppose when network condition is relatively poor or unstable, if adopt the maximum message length MaxMsgSize size of appointment to transmit DM message, particularly big object transmission then might occur causing transmitting failure owing to message is excessive or wrong situation appears in transport process.Because of not considering network condition, and there is potential stable hidden danger in the mode of this appointment maximum message length MaxMsgSize size, simultaneously because size is fixing, and the flexibility that shortage is adjusted according to object when DM message sends.
Summary of the invention
Technical problem to be solved by this invention is, a kind of terminal is provided and utilizes device management protocol to carry out the method for transmission of messages, the problem of very flexible a little less than the stability of fixedly bringing because of the maximum message length size when being used for solving existing equipment management agreement message and sending.
In order to address the above problem, the present invention proposes a kind of method of utilizing device management protocol to carry out transmission of messages, be used for carrying out device management session between terminal and the server, described method comprises the steps:
Step 1: terminal is obtained current wireless network state before beginning message session with server by device management protocol, adjusts the size of maximum message length according to described wireless network state;
Step 2: terminal will be adjusted the described maximum message length of determining the back and send to server, begin message session with server, and both sides carry out transmission of messages according to this maximum message length in conversation procedure.
Further, described step 1 specifically comprises:
Step 11, the triggering message that is used for initialize session of terminal reception server;
Step 12, terminal are obtained the signal strength values of wireless network before beginning message session with server by device management protocol;
Step 13, terminal are carried out grade to the signal strength values of the wireless network that obtains and are judged, determine the grade of current wireless network state;
Step 14, terminal are adjusted the size of described maximum message length according to the grade of wireless network state.
Further, in step 1,
Described wireless network state grade is to be divided into 5 grades according to wireless network signal strength, promptly is divided into successively by intensity level is ascending: poor, relatively poor, general, good, better;
The mode of the size of the described maximum message length of described adjustment is:
The grade of current wireless network state keeps maximum message length constant during corresponding to the grade of " good " or " better ";
The grade of current wireless network state reduces maximum message length according to setting step-length during corresponding to the grade of " generally " or " poor " or " relatively poor ".
Further, in the described step 1, described wireless network state grade is to be divided into 3 grades according to wireless network signal strength, according to upper limit threshold and lower threshold wireless network signal strength is divided;
The mode of the size of the described maximum message length of described adjustment further comprises:
When wireless network signal strength during, increase the value of described maximum message length greater than upper limit threshold;
When wireless network signal strength is between upper limit threshold and lower threshold, keep described maximum message length constant;
When wireless network signal strength during, reduce the value of described maximum message length less than lower threshold.
A kind of terminal also is provided, is used to utilize device management protocol and server to carry out transmission of messages, comprising:
Wireless module is used for obtaining current wireless network state before equipment control DM protocol conversation begins, and the wireless network state is sent to the network classification module, begins the interaction message of back transmission or receiving terminal and server at equipment control DM protocol conversation;
The network classification module is used for the current wireless network state of being received is carried out classification, and the network state grade is sent to parameter adjustment module;
Parameter adjustment module is used for according to the current network state grade value of maximum message size being adjusted, and determines the value of the required maximum message size of this session;
The DM conversation module, the value that is used for the maximum message size that described parameter adjustment module is definite reports server, carries out the DM session by wireless module and server, and the maximum message size value of determining according to described parameter adjustment module when carrying out transmission of messages is carried out.
Described wireless module is used for before equipment control DM protocol conversation begins, and by obtaining the signal strength values of wireless network, obtains current wireless network state;
Described network classification module is used for that the receive signal strength values that obtains wireless network is carried out grade and judges, realizes current wireless network state is carried out classification.
Further, it is to be divided into 5 grades according to wireless network signal strength that described network classification module is carried out classification to the wireless network state, promptly is divided into successively by intensity level is ascending: poor, relatively poor, general, good, better; The mode that described parameter adjustment module is adjusted the size of described maximum message length is:
The grade of current wireless network state keeps maximum message length constant during corresponding to the grade of " good " or " better ";
The grade of current wireless network state reduces maximum message length according to setting step-length during corresponding to the grade of " generally " or " poor " or " relatively poor ".
Further, it is to be divided into 3 grades according to wireless network signal strength that described network classification module is carried out classification to the wireless network state, according to upper limit threshold and lower threshold wireless network signal strength is divided;
Described parameter adjustment module is adjusted the mode of the size of described maximum message length, further comprises:
When wireless network signal strength during, increase the value of described maximum message length greater than upper limit threshold;
When wireless network signal strength is between upper limit threshold and lower threshold, keep described maximum message length constant;
When wireless network signal strength during, reduce the value of described maximum message length less than lower threshold.
Compared with prior art, terminal of the present invention and utilize device management protocol to carry out the method for transmission of messages, when carrying out the DM session, adjust the size of maximum message size MaxMsgSize value according to current network conditions, by under the network condition of poor, the message maximum length that compression allows reduces each mutual delivery time, to improve each mutual success rate, strengthen adaptability to bad network.Avoided prior art under the bad situation of network state, transmission failure that occurs often because of the message that transmits is excessive or the problem of makeing mistakes.
Description of drawings
Fig. 1 is an existing session flow chart in the OMA DM agreement;
Fig. 2 is the method flow diagram that the DM of utilization agreement of the present invention is carried out transmission of messages;
Fig. 3 realizes the session flow chart after adding adjustment MaxMsgSize size in the OMA DM agreement;
Fig. 4 uses the terminal schematic diagram that DM agreement of the present invention is carried out transmission of messages.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
The present invention is directed in the communication field based on OMA DM (Open Mobile Alliances, DeviceManagement, Open Mobile Alliance, equipment control) in the data sync and device management techniques of agreement, maximum message length in the DM agreement be there is no the situation of advantageous configurations scheme, provided a kind of adjustment DM (Device Management, equipment control) improvement project of agreement maximum message length, and provided the method for carrying out transmission of messages based on the scheme of this adjustment maximum message length, before thereby terminal transmission Pkg# 1 begins a DM session, get access to current wireless network state earlier, according to the wireless network state, adjust the MaxMsgSize size, carry out transmission of messages according to adjusted MaxMsgSize when making session.
Shown a kind of method of utilizing device management protocol to carry out transmission of messages of the present invention as shown in Figure 2, comprised the steps:
Step 1: terminal is obtained current wireless network state before beginning message session with server by device management protocol, adjusts the size of maximum message length according to described wireless network state;
Step 2: terminal will be adjusted the described maximum message length of determining the back and send to server, begin message session with server, and both sides carry out transmission of messages according to this maximum message length in conversation procedure.
In step 1, after obtaining current wireless network state, a feasible way is that the state value that will get access to carries out grade classification, for example we can define " poor, relatively poor, general, better, fine " totally 5 grades, be decided to be grade 1 respectively to class 5, about the division of grade can according to the network state value for example the network signal intensity value divide corresponding wireless network signal strength interval of each grade for example.When adjusting maximum message length big or small, the MaxMsgSize value is made suitable adjustment according to 5 grades divisions according to described wireless network state:
When network state is the 4th grade or the 5th grade, when promptly network state is in better or good grade, keep the MaxMsgSize size constant;
When network state is 3rd level, when promptly network state is in general grade,, suitably reduce the value of MaxMsgSize with a relative smaller step size value;
When network state is the 2nd grade or the 1st grade, when promptly network state is in the grade of relatively poor or difference,, suitably reduce the value of MaxMsgSize, with the network condition of maladjustment with a relatively large step value.
In step 1, after obtaining current wireless network state, also can be by the network state threshold value is set, stipulate a upper limit threshold, a lower threshold, and network state is divided into Three Estate, when adjusting maximum message length big or small, the MaxMsgSize value is made suitable adjustment according to 3 grades divisions according to described wireless network state:
When network state when being between the upper and lower limit threshold value, keep the MaxMsgSize size constant;
When network state when being higher than upper limit threshold, can suitably increase the value of MaxMsgSize, to make full use of preferable network state;
When network state when being lower than lower threshold, can suitably reduce the value of MaxMsgSize, with the network condition of maladjustment.
Based on above-mentioned two kinds of splitting schemes about the network state grade, in the step 1, when specifically carrying out, terminal gets access to current wireless network signal intensity value by wireless module; Terminal is judged the residing grade of current network state according to the wireless network signal strength value that gets access to; Terminal is made suitable adjustment according to the residing grade of current network state to the MaxMsgSize size, to adapt to current network conditions.
Because maximum message length MaxMsgSize determines according to network state, thereby before each initiation session, terminal all can report server with the value according to the definite MaxMsgSize of real network state, value according to this MaxMsgSize is carried out session, make transmission of messages and network state adapt, when having avoided fixedly the MaxMsgSize value network state is lacked adaptive defective.
As shown in Figure 3, specifically provided the flow chart that adopts the mode of adjusting the MaxMsgSize size to carry out the DM session, the process of improving back OMA DM session is as follows:
Step S21: send Notifaction message by server, trigger a managing conversation Pkg#0Notifacation message, initialize session;
Step S22: after terminal is received Notifaction message, obtain current wireless network signal intensity value by wireless module;
Step S23: terminal is judged the residing grade of current wireless network according to current wireless network signal strength value;
Step S24: terminal is carried out suitable adjustment according to the current wireless network hierarchy to the MaxMsgSize value, if network state is bad, an amount of compression reduces the value of MaxMsgSize, to reduce the time that each interaction message transmits, improves mutual success rate;
Step S25: terminal is returned and is connected server, circulates a notice of adjusted MaxMsgSize value, tells the server maximum message bag size that it is supported, follow-up message all must not surpass the MaxMsgSize size of appointment, up to this DM conversation end;
Step S26 to step S31 is and the identical interaction flow of existing DM session shown in Figure 1, wherein, among the step S28, carry out big object when sending, big object will be divided into a plurality of according to the requirement that is no more than the MaxMsgSize size, send to client successively, the MaxMsgSize of this moment is before this session, determine according to the wireless network state, thereby this maximum message size can guarantee that the session that is applicable to current network state carries out smoothly, thereby when having avoided all sessions all to adopt fixing MaxMsgSize value, the problem of the less stable that causes because of network state difference.
The invention has the advantages that as can be seen before each DM session begins from above-mentioned flow process, can be according to the different networks situation, the dynamic MaxMsgSize that adjusts, under the bad situation of network state, the compressed message size, reduce each mutual delivery time, thereby improve each mutual success rate, strengthen adaptive capacity bad network.
Based on the foregoing description,, can make amendment according to different emphasis to the concrete grammar that MaxMsgSize adjusts.
Further, the present invention carries out in the described DM of utilization agreement also providing a kind of terminal on the basis of method of transmission of messages, is used to utilize DM agreement and server to carry out transmission of messages, and as shown in Figure 4, this terminal comprises:
Wireless module is used for obtaining current wireless network state before the DM session begins, and the wireless network state is sent to the network classification module;
The network classification module is used for the current wireless network state of being received is carried out classification, and the network state grade is sent to parameter adjustment module; Concrete hierarchical approaches can be referring to hierarchy plan recited above, and the network classification module according to hierarchy plan, is determined the network state grade that current network state belongs to according to current network state;
Parameter adjustment module is used for according to the current network state grade, and MaxMsgSize adjusts to maximum message size, determines the required MaxMsgSize value of this session.During adjustment, taken into full account the network state situation, the adjustment scheme can be referring to the adjustment mode that provides in the hierarchy plan recited above, especially under the relatively poor or unsettled situation of network condition, can compress the maximum message size MaxMsgSize of each message, suitably increase mutual number of times,, can effectively improve mutual success rate to shorten each mutual used delivery time; When network state is better, then can reduce the MaxMsgSize value;
The DM conversation module is used for the MaxMsgSize value that described parameter adjustment module is determined is reported server, carries out the DM session with server, and the MaxMsgSize value of determining according to described parameter adjustment module when carrying out transmission of messages is carried out.
Correspondingly, with the server that terminal is carried out the DM session, after receiving the MaxMsgSize value that the DM conversation module sends, the MaxMsgSize value of determining according to described parameter adjustment module when carrying out transmission of messages is carried out, up to the DM conversation end.
The present invention need not the DM agreement is carried out bigger change, the transmission of messages mode has very strong compatibility, on the mode of original appointment MaxMsgSize size, add a kind of adjustment means, the foundation of adjusting is the network condition of each session when initiating, and carries out adjusted MaxMsgSize size according to network condition, has considered the factor of current network conditions, improved each mutual success rate, the adaptability to network condition when relatively poor or unstable is stronger.
To sum up, use terminal of the present invention and method for message transmission, by dynamic adjustment MaxMsgSize value, under the relatively poor or unsettled situation of network condition, can compress the maximum message size MaxMsgSize of each message, suitably increase mutual number of times,, can effectively improve mutual success rate to shorten each mutual used delivery time.
The above is embodiments of the invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within the claim scope of the present invention.
Claims (8)
1, a kind of method of utilizing device management protocol to carry out transmission of messages is used for carrying out device management session between terminal and the server, it is characterized in that, comprises the steps:
Step 1: terminal is obtained current wireless network state before beginning message session with server by device management protocol, adjusts the size of maximum message length according to described wireless network state;
Step 2: terminal will be adjusted the described maximum message length of determining the back and send to server, begin message session with server, and both sides carry out transmission of messages according to this maximum message length in conversation procedure.
2, the method for claim 1 is characterized in that, described step 1 specifically comprises:
Step 11, the triggering message that is used for initialize session of terminal reception server;
Step 12, terminal are obtained the signal strength values of wireless network before beginning message session with server by device management protocol;
Step 13, terminal are carried out grade to the signal strength values of the wireless network that obtains and are judged, determine the grade of current wireless network state;
Step 14, terminal are adjusted the size of described maximum message length according to the grade of wireless network state.
3, method as claimed in claim 2 is characterized in that, in the step 1,
Described wireless network state grade is to be divided into 5 grades according to wireless network signal strength, promptly is divided into successively by intensity level is ascending: poor, relatively poor, general, good, better;
The mode of the size of the described maximum message length of described adjustment is:
The grade of current wireless network state keeps maximum message length constant during corresponding to the grade of " good " or " better ";
The grade of current wireless network state reduces maximum message length according to setting step-length during corresponding to the grade of " generally " or " poor " or " relatively poor ".
4, method as claimed in claim 2 is characterized in that, in the step 1,
Described wireless network state grade is to be divided into 3 grades according to wireless network signal strength, according to upper limit threshold and lower threshold wireless network signal strength is divided;
The mode of the size of the described maximum message length of described adjustment further comprises:
When wireless network signal strength during, increase the value of described maximum message length greater than upper limit threshold;
When wireless network signal strength is between upper limit threshold and lower threshold, keep described maximum message length constant;
When wireless network signal strength during, reduce the value of described maximum message length less than lower threshold.
5, a kind of terminal is used to utilize device management protocol and server to carry out transmission of messages, it is characterized in that, comprising:
Wireless module is used for obtaining current wireless network state before equipment control DM protocol conversation begins, and the wireless network state is sent to the network classification module, begins the interaction message of back transmission or receiving terminal and server at equipment control DM protocol conversation;
The network classification module is used for the current wireless network state of being received is carried out classification, and the network state grade is sent to parameter adjustment module;
Parameter adjustment module is used for according to the current network state grade value of maximum message size being adjusted, and determines the value of the required maximum message size of this session;
The DM conversation module, the value that is used for the maximum message size that described parameter adjustment module is definite reports server, carries out the DM session by wireless module and server, and the maximum message size value of determining according to described parameter adjustment module when carrying out transmission of messages is carried out.
6, terminal as claimed in claim 5 is characterized in that,
Described wireless module is used for before equipment control DM protocol conversation begins, and by obtaining the signal strength values of wireless network, obtains current wireless network state;
Described network classification module is used for that the receive signal strength values that obtains wireless network is carried out grade and judges, realizes current wireless network state is carried out classification.
7, terminal as claimed in claim 6 is characterized in that,
It is to be divided into 5 grades according to wireless network signal strength that described network classification module is carried out classification to the wireless network state, promptly is divided into successively by intensity level is ascending: poor, relatively poor, general, good, better;
The mode that described parameter adjustment module is adjusted the size of described maximum message length is:
The grade of current wireless network state keeps maximum message length constant during corresponding to the grade of " good " or " better ";
The grade of current wireless network state reduces maximum message length according to setting step-length during corresponding to the grade of " generally " or " poor " or " relatively poor ".
8, terminal as claimed in claim 6 is characterized in that,
It is to be divided into 3 grades according to wireless network signal strength that described network classification module is carried out classification to the wireless network state, according to upper limit threshold and lower threshold wireless network signal strength is divided;
Described parameter adjustment module is adjusted the mode of the size of described maximum message length, further comprises:
When wireless network signal strength during, increase the value of described maximum message length greater than upper limit threshold;
When wireless network signal strength is between upper limit threshold and lower threshold, keep described maximum message length constant;
When wireless network signal strength during, reduce the value of described maximum message length less than lower threshold.
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| CN200910161517A CN101616378A (en) | 2009-07-24 | 2009-07-24 | A kind of terminal and utilize device management protocol to carry out the method for transmission of messages |
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| CN200910161517A CN101616378A (en) | 2009-07-24 | 2009-07-24 | A kind of terminal and utilize device management protocol to carry out the method for transmission of messages |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103973778A (en) * | 2014-04-22 | 2014-08-06 | 华为技术有限公司 | Information pushing method and device |
| CN104780092A (en) * | 2014-01-13 | 2015-07-15 | 阿里巴巴集团控股有限公司 | File transmission method and device as well as server system |
| CN114389746A (en) * | 2020-10-21 | 2022-04-22 | 航天科工惯性技术有限公司 | Variable-length data processing and transmitting method |
-
2009
- 2009-07-24 CN CN200910161517A patent/CN101616378A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104780092A (en) * | 2014-01-13 | 2015-07-15 | 阿里巴巴集团控股有限公司 | File transmission method and device as well as server system |
| CN103973778A (en) * | 2014-04-22 | 2014-08-06 | 华为技术有限公司 | Information pushing method and device |
| CN114389746A (en) * | 2020-10-21 | 2022-04-22 | 航天科工惯性技术有限公司 | Variable-length data processing and transmitting method |
| CN114389746B (en) * | 2020-10-21 | 2023-07-14 | 航天科工惯性技术有限公司 | Variable length data processing and transmitting method |
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Application publication date: 20091230 |