CN102316426A - Short message retransmission method and network equipment - Google Patents
Short message retransmission method and network equipment Download PDFInfo
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Abstract
本发明提供了一种重传短信的方法及网络设备。其中，所述方法包括：向终端发送短信；在等待所述终端返回用于指示已收到所述短信的确认报告的过程中，如果检测到所述终端发生小区切换，则开始计时；在计时达到第一时间后，向所述终端重新发送所述短信；其中，所述第一时间不小于所述终端在小区切换后重建用于传输所述短信的短信信道所需的时间，且小于释放所述短信信道之前的短信接收等待时间。本发明能够有效改善现有技术中的短信下发错误的问题，提升用户对网络质量的感知。
The invention provides a method and network equipment for retransmitting short messages. Wherein, the method includes: sending a short message to the terminal; in the process of waiting for the terminal to return an acknowledgment report indicating that the short message has been received, if it is detected that the terminal has a cell handover, start timing; After reaching the first time, resend the short message to the terminal; wherein, the first time is not less than the time required for the terminal to rebuild the short message channel used to transmit the short message after cell switching, and is less than the time required for releasing the short message The short message reception waiting time before the short message channel. The present invention can effectively improve the problem of wrong delivery of short messages in the prior art, and improve users' perception of network quality.
Description
Technical field
The present invention relates to the data service technical field in the mobile communication, be specifically related to a kind of method and network equipment that retransmits note.
Background technology
Note (Short Message is called short message again) is the most widely used value-added service of mobile subscriber, and it has been penetrated into people's work and various fields in life as a kind of communication mode easily.In current GSM, for the success that guarantees note issues, all be provided with retransmission mechanism at sms center and mobile switching centre (MSC, Mobile Switching Center), in order to when note issues mistake, retransmit note data.
Current GSM retransmits note and relates generally to following system equipment: sms center, mobile switching centre and short message terminal.Mobile switching centre is connected with sms center, short message terminal communication respectively.Be provided with timer in mobile switching centre; Be used for note and retransmit timing, its method is: after note issues, in the time that mobile switching centre's timer is set; If mobile switching centre does not receive the affirmation report (ACK) that short message terminal is responded, then retransmit note data 1 time.
In the GSM of prior art, because network, note issues and has all kinds of mistakes always, causes the note time-delay to receive and maybe can't receive, and has directly influenced the perception of client to network quality, has had a strong impact on user's business experience
The inventor furthers investigate the back to prior art and finds: although adopted the note retransmission mechanism, still exist a large amount of notes to issue mistake in the existing system; The note that is caused by network error issues in the mistake, and mobile switching centre's refusal and mobile switching centre's system mistake have accounted for more than 90%; With Chinese Guangdong province Huizhou City is example, and every day, point-to-point note amount was about 5,000,000, and it is about 5.5 ten thousand that the note that network error causes issues mistake, and wherein mobile switching centre's refusal and mobile switching centre's refusal total amount just reach about 50,000; And to these the two types wrong reasons that produce, the explanation that prior art provides is because TCAP Transaction Capability Application Part (TCAP, the Transaction Capabilities Application Part) layer of mobile switching centre and MAP laminar flow amount control mistake cause; This explains fuzzy, and is not inconsistent with the core system ruuning situation of global system for mobile communications (GSM, Global System of Mobile communication).
Therefore, need a kind of method that retransmits note at present badly, the note that mobile switching centre refuses and mobile switching centre's system mistake causes that can effectively solve prior art issues mistake, to promote the perception of user to network quality.
Summary of the invention
Technical problem to be solved by this invention provides a kind of method and network equipment that retransmits note, effectively improves note of the prior art and issues wrong problem, promotes the perception of user to network quality.
For solving the problems of the technologies described above, the present invention provides scheme following:
A kind of method that retransmits note comprises:
Send note to the terminal;
Return the process that is used for indicating the affirmation report of having received said note at the said terminal of wait, the sub-district switching takes place, then pick up counting if detect said terminal;
After timing reaches the very first time, resend said note to said terminal;
Wherein, the said very first time is not less than said terminal and switches the required time of note channel that the back reconstruction is used to transmit said note in the sub-district, and receives the stand-by period less than discharging said note channel note before.
Preferably, in the said method,
Start a note retransmission timer and pick up counting after note is sent at the terminal said, the time-out time of said note retransmission timer retransmits the stand-by period for preset note;
The said process that is used for indicating the affirmation report of having received said note of returning at the said terminal of wait; The sub-district switching takes place if detect said terminal; Then pick up counting, specifically: the clocking value at said note retransmission timer reached said note before the re-transmission stand-by period, if detect said terminal the sub-district switching took place; Then the time-out time with said note retransmission timer is revised as the said very first time, and restarts said note retransmission timer;
Said after timing reaches the very first time, resend said note to said terminal, specifically: when the clocking value of said note retransmission timer reaches said very first time, resend said note to said terminal.
Preferably, in the said method, switch the said generation sub-district, said terminal that detects, specifically:
According to the ID at said terminal, judge whether the corresponding VLR Visitor Location Register VLR in said terminal receives the channel switching message at said terminal, if judge that then said terminal the sub-district takes place switches.
Preferably, in the said method, it is that Separate Dedicated Control Channel SDCCH channel switches message that said channel switches message, and said note channel is the SAPI3 link on the said SDCCH.
Preferably, in the said method, when the said note reception stand-by period was 10 seconds, said very first time span was 1～8 second.
The present invention also provides a kind of network equipment that retransmits note, comprising:
SMS transmission module is used for sending note to the terminal;
Switch detection module is used for returning the process that is used to indicate the affirmation report of having received said note at the said terminal of wait, detects said terminal whether the sub-district switching takes place;
Timing module is used for after said switch detection module detects the generation sub-district switching of said terminal, picking up counting, and after timing reaches the very first time, triggering said SMS transmission module and resend said note to said terminal;
Wherein, the said very first time is not less than said terminal and switches the required time of note channel that the back reconstruction is used to transmit said note in the sub-district, and receives the stand-by period less than discharging said note channel note before.
Preferably, in the above-mentioned network equipment, said timing module comprises a note retransmission timer, and the time-out time of said note retransmission timer retransmits the stand-by period for preset note;
Said SMS transmission module after sending said note to the terminal, further starts said note retransmission timer and picks up counting;
Said switch detection module; Also be used for reaching said note before the re-transmission stand-by period at the clocking value of said note retransmission timer; The sub-district switching takes place if detect said terminal; Then the time-out time with said note retransmission timer is revised as the said very first time, and restarts said note retransmission timer;
Said note retransmission timer also is used for when clocking value reaches the time-out time of Set For Current, triggers said SMS transmission module and resends said note to said terminal.
Preferably, in the above-mentioned network equipment,
Said switch detection module also is used for the ID according to said terminal, judges whether the corresponding VLR in said terminal receives the channel switching message at said terminal, if judge that then said terminal the sub-district takes place switches.
Preferably, in the above-mentioned network equipment, it is that the SDCCH channel switches message that said channel switches message, and said note channel is the SAPI3 link on the said SDCCH.
Preferably, in the above-mentioned network equipment, when the said note reception stand-by period was 10 seconds, said very first time span was 1～8 second.
Preferably, the said network equipment is mobile switching centre or soft switching server.
Can find out from the above; The method of re-transmission note provided by the invention and the network equipment; The note re-transmission time has been carried out perfect, reduced to set up the back owing to do not receive the probability that note channel that note causes discharges for a long time, thereby improved the success rate that note retransmits at the note channel; Promote network service quality, improved user's business experience.And present embodiment also has changes less, the simple advantage of realization flow to existing network.
Description of drawings
Fig. 1 is the schematic flow sheet of the method for the said re-transmission note of the embodiment of the invention;
Fig. 2 is another schematic flow sheet of the method for the said re-transmission note of the embodiment of the invention;
Fig. 3 is the structural representation of the network equipment of the said re-transmission note of the embodiment of the invention;
Fig. 4 is the position view in network of the said network equipment of the embodiment of the invention;
Fig. 5 is the position view in another network of the said network equipment of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment, specific embodiments of the invention describes in further detail.
Before explanation embodiment of the present invention, elder generation analyzes the main cause that note of the prior art issues the Problem-Error generation.
In the prior art; Note is passed through Separate Dedicated Control Channel (SDCCH under the user terminal idle condition; Stand-Alone Dedicated Control Channel) transmits; Specifically be to transmit (SAPI3 is SAPI=3, the expression short message service) through Service Access point indication 3 (SAPI3, the Service Access Point Identifier3) link that is based upon on the SDCCH channel.
When receiving note; Switch user terminal such as lucky generation sub-district; Because the foundation of SAPI3 link is to be realized by OSAPIL (Operation on a SAPI3 link in BSC) traffic function, and the priority of OSAPIL traffic function is lower than channel assignment, encrypts processes such as control, channel switching, and the same time can only be carried out a kind of traffic process; Therefore when sub-district switching (channel switching) takes place; This note will be abandoned by base station controller (BSC, Base Station Controller), and this will cause sending the first time of note failure.
After (channel switching) completion was switched in the sub-district, the SAPI3 link was rebuild in new sub-district at once.Mobile switching centre will retransmit timer according to note and carry out the note re-transmission after note is sent failure for the first time.For example, the mobile switching centre of certain manufacturer is provided with according to timer TC1N, after sending for the first time 20 seconds (note retransmits the stand-by period) of note, retransmits note (CP_DATA) again.Yet user terminal, connects if unreceived note data initiatively discharges SAPI3 in 10 seconds (being that note receives the stand-by period) of behind the SAPI3 link re-establishment, waiting for then according to its timer T3420.Can find out; For this mobile switching centre, after timing in 20 seconds is accomplished, when a note is retransmitted by mobile switching centre; BSC finds and the eating dishes without rice or wine to be connected and discharge (because at this moment less than the user terminal of paging purpose again of terminal; Also just can not rebulid new SAPI3 link), will reply SAPI refusal (SAPI REJ) message and give mobile switching centre, mobile switching centre is according to the judgement of self-condition; To the corresponding message (like ABT message or System Failure message) of sms center loopback, sms center should inferior issue and be recorded as mobile switching centre's refusal or mobile switching centre's system mistake.Like this, note retransmits and has also failed, and the transmission flow of this note finishes, and sends failure.
The inventor is through above-mentioned Study on process flow test and analyze the back discovery; (switching of note channel) switched in the sub-district is to cause note to issue time-delay or the main network reason that can't receive; Especially in the current network that the mobile communication base station, city is intensive day by day, moving velocity of terminal increases day by day, the sub-district switching is frequent day by day, this problem is increasing to the influence of telex network.The reason that note issues the generation of mobile switching centre refusal and mobile switching centre's system mistake in the mistake mainly is:
When (1) note issued, SDCCH took place and switches in user terminal just, and BSC abandons note, causes note to issue failure for the first time.
(2) mobile switching centre's note retransmits timer that the time is set is unreasonable, and when retransmitting note data, user terminal has discharged the SAPI3 link of eating dishes without rice or wine, causes note to issue failure for the second time.
As seen from the above analysis; There is following defective in existing core net mobile switching centre note retransmission scheme: mobile switching centre is provided with single the note retransmission timer time; Issuing mistake for all is the same re-transmission time, and it is on the low side to cause retransmitting success rate.Especially the note failure that causes for the short message terminal switching channels; Because 20 seconds the re-transmission time that mobile switching centre is provided with; And behind the short message terminal switching channels, having discharged the note channel after 10 seconds after rebuilding the SAPI3 link, mobile switching centre is when retransmitting note; Do not have paging short message terminal once more, so note retransmits and must fail.
For note mobile switching centre refusal and mobile switching centre's system mistake, it is external cause that the note channel switches, and it is internal cause that mobile switching centre's note re-transmission timer re-transmission time is provided with unreasonable.If adopt the prioritization scheme of forbidding that note channel (like the SDCCH channel) switches simply; Issue mistake though note can effectively have been reduced; But for the sub-district that has the user terminal high-speed mobile and inapplicable; Like highway, railway sub-district along the line, forbid that the SDCCH channel switches, and possibly cause dropped call and note to issue failure.For this reason, the inventor has proposed a kind of method that retransmits note through further investigation; Being primarily aimed at the short message terminal switching channels causes note to retransmit the situation of failure; Switch (channel switchings) through detected cells, dynamically arrange mobile switching centre's note and retransmit the time, reduce the probability that the note channel (like the SAPI3 link) at terminal when the re-transmission note has discharged; Issue wrong problem thereby improve note of the prior art effectively, promote the perception of user network quality.
At first, please refer to Fig. 1, the method for the described re-transmission note of the embodiment of the invention specifically may further comprise the steps:
Here sending note to the terminal specifically can be that network side sends note to the terminal for the first time, and its detailed process can be identical with the flow process of sending note the first time of the prior art, repeats no more here.Certainly, if when system allows to retransmit more than 2 times to note, sending note to the terminal and can be meant that also before retransmitting note the last time certain once retransmits note here.
In the prior art; Network side sends said note in step 11 after; Wait for that receiving said terminal returns said affirmation report; If in the predefined time (normally note retransmits the stand-by period), do not receive said affirmation report yet, then start re-transmission note process, send said note to the terminal once more.The present embodiment network side further in the process of the said affirmation report of wait, detects said terminal and discharges generation sub-district switching (must cause the switching of note channel if switch the generation sub-district), when the sub-district switching takes place, then picks up counting.
Note of the prior art retransmits waits for too long, and the note channel discharges usually when retransmitting note, and then causes note to retransmit failure.When the sub-district switching took place at the terminal, the probability that the note channel has discharged when retransmitting in order to reduce note, present embodiment utilized the said very first time to trigger note and retransmit, and needn't wait until that note retransmits the overtime note that retransmits again of stand-by period.The setting of the said very first time, considered that the switching back rebuilds the note required time of channel in the sub-district at the terminal: too fast if note retransmits, then possibility is rebuild as yet to accomplish not cause retransmitting because of the note channel and is failed.The setting of the said very first time; Also considered to accomplish from the note channel reconstructing; (the note reception stand-by period is meant that terminal wait after the note channel is set up receives the time of note to receive the stand-by period to the note that discharges the note interchannel; If the terminal does not receive note yet in note receives the stand-by period, then the terminal can initiatively discharge the note channel): slow if note retransmitted, then possibly cause retransmitting failure because the note signal is released again.
The switching back rebuilds the note required time of channel in the sub-district at above-mentioned terminal, can test back statistics acquisition through the terminal being set up note channel required time.Usually, the note channel settling time in the networks such as GSM, TD-SCDMA, WCDMA is all less than 1 second.The said short message reception stand-by period then can obtain from end, can certainly preestablish this note by network side and receive the stand-by period, and then be handed down to the terminal.Note in the existing GSM network receives the stand-by period and is generally 10 seconds, i.e. after the SAPI3 link establishment, if in 10 seconds still for receiving note, then the terminal will initiatively discharge this SAPI3 link.As a preferred embodiment, said very first time span is 1～8 second.
Can find out from above step; Note with respect to prior art retransmits; Present embodiment has carried out perfect to the note re-transmission time, reduced to set up the back owing to do not receive the probability of the note channel release that note causes for a long time at the note channel, thereby improved the success rate that note retransmits; Promote network service quality, improved user's business experience.And present embodiment also has changes less, the simple advantage of realization flow to existing network.
As a preferred embodiment; Mobile switching centre sends in step 11 and can start the note retransmission timer after the said note and pick up counting; This moment, the time-out time of said note retransmission timer retransmitted the stand-by period for preset note; Retransmit the stand-by period if i.e. note retransmission timer timing reaches this note, will trigger note and retransmit.The process that is used to indicate the affirmation report of having received said note is returned at the said terminal of said wait in the above-mentioned steps 12, promptly is the timing of said note retransmission timer retransmits the stand-by period to preset note process.Clocking value at said note retransmission timer reached said note before the re-transmission stand-by period; The sub-district switching takes place if mobile switching centre detects said terminal; Then the time-out time with said note retransmission timer is revised as the said very first time, and restarts said note retransmission timer.Like this, in step 13, when the clocking value of said note retransmission timer reached said very first time, mobile switching centre resend said note to said terminal, and concrete send mode is to send to said terminal through base station controller.
For helping to understand the foregoing description; Below with the whole terminal of note the note channel to take place when receiving note switch to example; In conjunction with idiographic flow shown in Figure 2 above-mentioned steps is done more detailed explanation, wherein, note retransmission timer and switch detector all are arranged on mobile switching centre:
Step 201, sms center is to mobile switching centre's transmitting short message.
Step 202, mobile switching centre replys sms center in advance.
Step 203, mobile switching centre's calling called subscriber.
Step 204, the note channel between base station control controller foundation and the terminal, this note channel specifically can be the SAPI3 link on the SDCCH.
Step 205, mobile switching centre begins to pass for the first time down note, through base station controller to the terminal transmitting short message.
Step 206, in first time transmitting short message, mobile switching centre starts the note retransmission timer and picks up counting, and this moment, the time-out time of said note retransmission timer retransmitted the stand-by period for preset note.
Step 207, note issue in the process, and switch the terminal request sub-district.
Step 208, base station controller allow the sub-district, terminal to switch.
The channel that step 210, base station controller report switches the VLR Visitor Location Register (VLR, Visitor Location Register) that message sends to mobile switching centre.Switch detector is judged whether the corresponding VLR in said terminal receives the channel switching message at said terminal, and then is judged whether the terminal sub-district takes place switch through the ID (ID can be international mobile subscriber identity IMSI) according to said terminal.Switch detector is behind the channel handover information that detects the said terminal that base station controller reports; At once send a message (like RetranTime message) to the note retransmission timer; It is the said very first time that this message indication note retransmission timer is revised time-out time, and picks up counting again.
When step 211, the timing of note retransmission timer arrive said very first time, trigger mobile switching centre and retransmit said note to said terminal.
Step 212, mobile switching centre passes said note through base station controller down to said terminal for the second time according to the triggering of note retransmission timer.
After step 213, short message terminal successfully receive note, return to mobile switching centre and to be used to indicate the affirmation report of having received said note.
Step 214, mobile switching centre receive confirm the report after, reply to sms center, the indication note sent success.So far, the described note of present embodiment retransmits the flow process end.
Can find out that in the above-mentioned steps, after detecting terminal generation sub-district switching, the time-out time of revising note retransmission timer of the prior art is the said very first time, utilizes the note retransmission timer to trigger note and retransmits.
Based on the method for above-mentioned re-transmission note, present embodiment also provides a kind of network equipment that retransmits note, and is as shown in Figure 3, and this network equipment specifically comprises:
SMS transmission module is used for sending note to the terminal;
Switch detection module is used for returning the process that is used to indicate the affirmation report of having received said note at the said terminal of wait, detects said terminal whether the sub-district switching takes place;
Timing module is used for after said switch detection module detects the generation sub-district switching of said terminal, picking up counting, and after timing reaches the very first time, triggering said SMS transmission module and resend said note to said terminal;
Wherein, the said very first time is not less than said terminal and switches the required time of note channel that the back reconstruction is used to transmit said note in the sub-district, and receives the stand-by period less than discharging said note channel note before.
As a preferred embodiment:
Said timing module comprises a note retransmission timer, and the time-out time of said note retransmission timer retransmits the stand-by period for preset note;
Said SMS transmission module after sending said note to the terminal, further starts said note retransmission timer and picks up counting, and this moment, the time-out time of said note retransmission timer was that said note retransmits the stand-by period;
Said switch detection module; Also be used for reaching said note before the re-transmission stand-by period at the clocking value of said note retransmission timer; The sub-district switching takes place if detect said terminal; Then the time-out time with said note retransmission timer is revised as the said very first time, and restarts said note retransmission timer;
Said note retransmission timer also is used for when clocking value reaches the time-out time of Set For Current, triggers said SMS transmission module and resends said note to said terminal.
Here, said switch detection module also is used for the ID according to said terminal, judges whether the corresponding VLR in said terminal receives the channel switching message at said terminal, if judge that then said terminal the sub-district takes place switches.
Here, it is that the SDCCH channel switches message that said channel switches message, and said note channel is the SAPI3 link on the said SDCCH.Preferably, when the said note reception stand-by period was 10 seconds, said very first time span was 1～8 second.
Here, corresponding to the GMS network, the said network equipment specifically can be a mobile switching centre, and this moment is as shown in Figure 4 like the position of mobile switching centre in network.Below again each equipment among Fig. 4, module are carried out simple declaration.
Sms center among Fig. 4 is identical with sms center function of the prior art, is responsible for the reception of note and transmits, and note is issued to mobile switching centre.
Mobile switching centre among Fig. 4 is connected with sms center and base station controller (BSC) respectively, initiates the paging to the called subscriber.
The SMS transmission module of the mobile switching centre among Fig. 4 transmits note data, and is mutual with short message terminal.Note issues successfully, then returns success to sms center and receives the response; Note issues failure, and then the triggering according to its built-in note retransmission timer retransmits note data.
The note retransmission timer of the mobile switching centre among Fig. 4 is mainly accomplished note and is issued regularly, triggers SMS transmission module and retransmits note data:
(1) mobile switching centre's SMS transmission module is sent one to the note retransmission timer simultaneously and is started timing (Time_Start) message when the transmitting short message of terminal, carries the ID at said terminal in this message; The note retransmission timer starts timing after receiving above-mentioned startup timing message, this moment the note retransmission timer time-out time for preset note retransmits the stand-by period, be defaulted as usually 15 seconds overtime.
(2) if mobile switching centre receives the affirmation report of returning at the terminal (CP_ACK) of receiving said short message in note retransmits the stand-by period after; This SMS transmission module is sent to the note retransmission timer and is stopped timing (Time_Stop) message, carries the ID at said terminal in this message; The note retransmission timer after receiving that this stops timing message is closed the timer corresponding with said ID, and this flow process finishes.
(3) if above-mentioned affirmation report is not received by mobile switching centre in note retransmits the stand-by period; Do not detect said terminal yet the sub-district switching takes place; Then the note retransmission timer reaches said short message after the re-transmission stand-by period in timing; Send and trigger (SMS_Rsend) message, trigger SMS transmission module and issue said note (CP_DATA) to said terminal once more to SMS transmission module.
(4) in the embodiment of the invention, the note retransmission timer retransmits duration and has the function that is on-the-fly modified by switch detector.If the note retransmission timer receives modification time (Timer_Modify) message from switch detector in said note retransmits the stand-by period, then time-out time is revised as the said very first time, and restarts timing.
The switch detector of the mobile switching centre among Fig. 4 is responsible for detecting the short message terminal sub-district and is switched (or channel switching) situation.
(1) SMS transmission module of mobile switching centre is sent one to switch detector and is detected (SMS_Monitor) message in the transmitting short message of terminal, comprises the ID (ID) at said terminal in this message; Switch detector receives above-mentioned detect-message, sets up the ID tabulation at terminal to be detected.
(2) switch detector and VLR set up interface, and according to ID, the subscriber channel that the base station controller that detection VLR receives reports switches (handover) message, confirm whether user terminal sub-district (channel) takes place switch.
(3) after sub-district switching (channel switching) takes place in definite short message terminal, send modification time (RetranTime) message to the note retransmission timer, indication note retransmission timer is revised the not above-mentioned very first time of time-out time.
Base station controller among Fig. 4 (BSC), identical with BSC function of the prior art, be responsible for setting up in order to transmit the SAPI3 link of note, transparent transmission note data.
Corresponding to 3-G (Generation Three mobile communication system) 3G (like the TD-SCDMA network) network, the said network equipment can also be a soft switching server, and this moment is as shown in Figure 5, and soft switching server is connected with radio network controller (RNC) with sms center respectively.
Service bearer and control are separated in the 3G network, and the soft switching server of 3G network (SERVER) is responsible for the control Signalling exchange, and WMG (MGW) carries out exchange of media, and note is through the Signaling System Number 7 network transmission.Therefore in 3G network, note is sent to soft switching server after being issued by sms center, is handed down to the terminal via RNC (BSC in the corresponding GSM network of RNC, the base station in the corresponding GSM network of NodeB).Channel switching process in the 3G network is identical with the channel switching process of GSM network; Therefore only need to realize and mobile switching centre's identical functions at the soft switching server place; In can the soft switching server of method expanded application in 3G network with the re-transmission note of present embodiment; Be that soft switching server has mobile switching centre's identical functions module, no longer it given unnecessary details here.
In sum; The method and the network equipment of the re-transmission note that the embodiment of the invention provided; The core net that has remedied prior art retransmits the deficiency of note, has improved it and has retransmitted the success rate of note, has solved the problem that the user delays time and receives or can't receive note to a great extent; Promoted network service quality, improved the perception of client network quality.And through inventor's network test, prove that also the present invention can effectively solve note and issue wrong problem, promote the perception of client network quality.
The above only is an execution mode of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (11)
1. a method that retransmits note is characterized in that, comprising:
Send note to the terminal;
Return the process that is used for indicating the affirmation report of having received said note at the said terminal of wait, the sub-district switching takes place, then pick up counting if detect said terminal;
After timing reaches the very first time, resend said note to said terminal;
Wherein, the said very first time is not less than said terminal and switches the required time of note channel that the back reconstruction is used to transmit said note in the sub-district, and receives the stand-by period less than discharging said note channel note before.
2. the method for claim 1 is characterized in that,
Start a note retransmission timer and pick up counting after note is sent at the terminal said, the time-out time of said note retransmission timer retransmits the stand-by period for preset note;
The said process that is used for indicating the affirmation report of having received said note of returning at the said terminal of wait; The sub-district switching takes place if detect said terminal; Then pick up counting, specifically: the clocking value at said note retransmission timer reached said note before the re-transmission stand-by period, if detect said terminal the sub-district switching took place; Then the time-out time with said note retransmission timer is revised as the said very first time, and restarts said note retransmission timer;
Said after timing reaches the very first time, resend said note to said terminal, specifically: when the clocking value of said note retransmission timer reaches said very first time, resend said note to said terminal.
3. according to claim 1 or claim 2 method is characterized in that,
Switch the said generation sub-district, said terminal that detects, specifically:
According to the ID at said terminal, judge whether the corresponding VLR Visitor Location Register VLR in said terminal receives the channel switching message at said terminal, if judge that then said terminal the sub-district takes place switches.
4. method as claimed in claim 3 is characterized in that, it is that Separate Dedicated Control Channel SDCCH channel switches message that said channel switches message, and said note channel is the SAPI3 link on the said SDCCH.
5. method as claimed in claim 4 is characterized in that, when the said note reception stand-by period was 10 seconds, said very first time span was 1～8 second.
6. a network equipment that retransmits note is characterized in that, comprising:
SMS transmission module is used for sending note to the terminal;
Switch detection module is used for returning the process that is used to indicate the affirmation report of having received said note at the said terminal of wait, detects said terminal whether the sub-district switching takes place;
Timing module is used for after said switch detection module detects the generation sub-district switching of said terminal, picking up counting, and after timing reaches the very first time, triggering said SMS transmission module and resend said note to said terminal;
Wherein, the said very first time is not less than said terminal and switches the required time of note channel that the back reconstruction is used to transmit said note in the sub-district, and receives the stand-by period less than discharging said note channel note before.
7. the network equipment as claimed in claim 6 is characterized in that, said timing module comprises a note retransmission timer, and the time-out time of said note retransmission timer retransmits the stand-by period for preset note;
Said SMS transmission module after sending said note to the terminal, further starts said note retransmission timer and picks up counting;
Said switch detection module; Also be used for reaching said note before the re-transmission stand-by period at the clocking value of said note retransmission timer; The sub-district switching takes place if detect said terminal; Then the time-out time with said note retransmission timer is revised as the said very first time, and restarts said note retransmission timer;
Said note retransmission timer also is used for when clocking value reaches the time-out time of Set For Current, triggers said SMS transmission module and resends said note to said terminal.
8. like the claim 6 or the 7 described network equipments, it is characterized in that,
Said switch detection module also is used for the ID according to said terminal, judges whether the corresponding VLR in said terminal receives the channel switching message at said terminal, if judge that then said terminal the sub-district takes place switches.
9. the network equipment as claimed in claim 8 is characterized in that, it is that the SDCCH channel switches message that said channel switches message, and said note channel is the SAPI3 link on the said SDCCH.
10. the network equipment as claimed in claim 9 is characterized in that, when the said note reception stand-by period was 10 seconds, said very first time span was 1～8 second.
11. the network equipment as claimed in claim 6 is characterized in that, the said network equipment is mobile switching centre or soft switching server.
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| CN2010102287205A CN102316426A (en) | 2010-07-09 | 2010-07-09 | Short message retransmission method and network equipment |
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| CN2010102287205A CN102316426A (en) | 2010-07-09 | 2010-07-09 | Short message retransmission method and network equipment |
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