CN106412859B - Method and terminal for automatically retransmitting short message - Google Patents
Method and terminal for automatically retransmitting short message Download PDFInfo
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- CN106412859B CN106412859B CN201510449781.7A CN201510449781A CN106412859B CN 106412859 B CN106412859 B CN 106412859B CN 201510449781 A CN201510449781 A CN 201510449781A CN 106412859 B CN106412859 B CN 106412859B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/12—Messaging; Mailboxes; Announcements
- H04W4/14—Short messaging services, e.g. short message services [SMS] or unstructured supplementary service data [USSD]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0022—Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
Abstract
The invention provides a method and a terminal for automatically retransmitting short messages, wherein the method for automatically retransmitting the short messages comprises the following steps: sending a short message to a network side, and waiting for a sending report fed back by the network side within a preset time period; and in the waiting process, if the wireless link is released, the short message is retransmitted after the wireless link is recovered. According to the scheme provided by the invention, in the process of waiting for the sending report fed back by the network side within the preset time period after the short message is sent, if the wireless link is released, the short message is automatically sent again after the wireless link is recovered without waiting for the end of the timing time of the timer, so that the delay time of the short message retransmission is greatly shortened, and the user experience is improved.
Description
Technical Field
The present invention relates to the field of wireless technologies, and in particular, to a method and a terminal for automatically retransmitting a short message.
Background
The following is introduced for the situation of sending and retransmitting short messages in the prior art:
short message sending mechanism of Circuit Switched Fallback (CSFB) mobile phone
Lte (long Term evolution) is considered as an evolution direction of next generation mobile communication by industry as a 3G subsequent evolution technology with its unique technical advantages of high data rate, low delay, flexible bandwidth configuration, etc. 2/3G era short message service is carried in circuit domain, LTE only has packet domain and no circuit domain, and special scheme support is needed if the short message is to be supported continuously. The CSFB mobile phone short message adopts an SMS over SGs (short message SMS is transmitted through an interface SGs between a mobile switching center and a mobility management entity), and the core thought of the SMS over SGs scheme is that LTE and a circuit domain cooperate to provide the short message, namely, the mobile phone is accessed by an LTE network, and the routing and the delivery of the short message are realized by the circuit domain.
AS shown in fig. 1, the SMs protocol stack may be divided into SM-AL (Short Message application Layer), SM-TL (Short Message Transfer Layer), SM-RL (Short Message Relay Layer), CM (Connection Management sublayer), and AS Layer (access Layer). The terminal packages the short message into a relay layer Data signaling (RP-Data) on an SM-RL layer, and then packages the short message into a control layer Data signaling (CP-Data) on a CM sublayer. The MSC is a mobile switch, the MS is a mobile terminal, the SMR is a Short Message relay, the SMC is Short Message connection management, the SM-RP protocol is a Short Message relay protocol, the SM-CPprotocol is a Short Message connection management protocol, and the SMS is a Short Message.
The Service flow of the SMS over SGs scheme can be divided into two cases, MO (Mobile Originating) and MT (Mobile receiving), where the MO SMS flow is shown in fig. 2, where an EPS/IMSIattach procedure is an EPS/IMSI attach process, a UE triggered Service Request is a terminal triggered Service Request, an Uplink NAS Transport is an Uplink NAS direct transfer, NAS is a non-access stratum, Uplink unitetdata is Uplink unit data, Forward Short Message is a Forward Short Message, a Message transfer is Message forwarding, a Deliverrepyrep is a transmission report, a Downlink unitetd is Downlink unit data, Downlink NAS Transport is Downlink NAS Transport, Release Request is a Release Request, and HLR/HLR is an HSS location register/home subscriber server; SMS-IWMSC is a short message service intercommunication mobile switching center, SC is a short message center, MSC/VLR is a mobile switch/visitor location register, and MME is a mobility management entity.
Corresponding to fig. 2, the complete flow when the terminal is in the idle state is as follows:
21. the terminal completes the joint EPS/IMSI attachment process.
22. The terminal initiates a short message service request.
23. The terminal packages the short message into RP-Data on SM-RL layer, then packages the short message into CP-Data on CM sublayer layer, and finally packages the short message into non-access stratum (NAS) message and sends the message to MME.
24. MME sends an Uplink unit data (Uplink Unitdata) message to MSC/VLR, and the short message is transmitted to MSC/VLR.
24a, the MSC/VLR sends a Downlink unit data (Downlink Unitdata) message to confirm the reception of the short message to the terminal.
25-28, the short message is sent to the short message center for processing, and a sending report is returned, and the sending report is packaged into a relay layer correct response signaling (RP-Ack) on an SM-RL layer.
29. And the MSC/VLR forwards the received sending report to the MME.
210. And the MME encapsulates the sending report into an NAS message and sends the NAS message to the terminal.
211, the terminal acknowledges the reception of the transmission report to the MSC/VLR 212.
213. MSC/VLR sends release request message to MME to inform short message sending completion.
The trigger point for the terminal to display that the short message is successfully sent is that in step 210, when the terminal receives a CP-Data (encapsulated RP-Ack), i.e. a Delivery Report, sent by the short message center, the terminal displays that the short message is successfully sent only after the terminal receives the RP-Ack. After the terminal sends the short message CP-Data (package RP-Data) in step 3, a timer about 45 seconds is started on the SM-RL layer to wait for receiving the CP-Data (package RP-Ack) sent by the short message center, and if the timer is overtime and does not receive the RP-Ack, the terminal starts automatic retransmission.
Second, LTE inter-system redirection
The LTE network needs to interoperate with the 2G and the 3G, and the requirements of insufficient coverage of the LTE network, partial initial service support, load balance among networks and the like are met. When the LTE terminal is in a connected state, the LTE terminal may access the 3G network in a redirection manner: the network side indicates target network information such as frequency points for the terminal, and the terminal accesses the target network with the help of the network.
The LTE-to-3G redirection signaling flow is shown in fig. 3, where RRC Connection Reconfiguration (measconfiguration) is RRC Connection Reconfiguration (carrying Measurement configuration), measurementcreport is Measurement Report, redirection-to-EUTRAN determined by NW is redirected to EUTRAN by the network, RRC Connection Release (redirectorrierinfo) is RRC Connection Release (carrying redirection frequency point information), 4G-to-3 growth procedure is cell reselection process from 4G to 3G, S1Release is S1 interface Release, Servicerequest is service Request, Assignment Request is RAB Assignment Request, Assignment Response is RAB Assignment Response, Update PDP context Request is Update PDP context Request, and Update PDP context Response is Update PDP context Response;
RAB is wireless access bearing, PDP is packet data protocol, GnGP SGSN is service GPRS supporting node based on Gn interface and Gp interface, Serving Gw is service gateway, PDN GW is packet data gateway, HSS is home subscriber server, RNC is wireless network controller, UE is user equipment, eNodeB is base station.
The specific steps are as follows:
31. the eNodeB sends measurement control, namely RRC Connection Reconfiguration information (carrying configuration of inter-system measurement events) to the UE;
32. when the measured signal quality meets the inter-system event threshold, the UE sends an inter-system measurement report to the eNodeB;
33. the eNodeB carries out redirection judgment and sends RRC connectionRelease message carrying redirection information to the UE;
34-316, 4G to 3G cell reselection procedures;
317. the eNodeB sends a UE Context Release Request message to the MME; the MME sends a UEContext Release Command message to the eNodeB, and releases S1 connection; the eNodeB returns UE Context Release Complete, and S1 connection Release is successful;
318. UE sends a service request to GnGp SGSN;
319a, GnGp SGSN sends RAB assignment request to RNC;
319b, RNC feeds back RAB assignment response to GnGp SGSN;
320a, GnGp SGSN sends a request for updating PDP context to PDN GW;
320b, PDN GW feeds back the response of updating PDP context to GnGp SGSN.
In addition, it is known that in some abnormal scenarios, the terminal cannot receive the RP-Ack, which causes the short message to be retransmitted:
in a scenario of the redirection scenario, for example, a redirection scenario from LTE to 3G/2G, when the LTE terminal immediately redirects LTE to 3G/2G after sending short message control layer Data signaling CP-Data (encapsulating relay layer Data signaling RP-Data), the network cannot issue an RP-Ack to the terminal, which specifically includes: in the redirection process, the terminal receives the RRCconnection Release message sent by the eNB to Release the RRC connection, and accesses the 3G/2G network, while the MSC forwarding the short message does not know the RAT change, and receives the downlink message (RP-Ack) sent by the SMSC and sends the message to the MME, and the MME releases the connection due to the redirection process, and the MME has no context of the terminal, and thus cannot send the RP-Ack to the terminal, as shown in fig. 4. Similar situations exist for redirection between base stations in an LTE system, and an MME can not send an RP-Ack to a terminal due to RRC connection release.
In a second scenario of offline, when the LTE terminal immediately goes offline after sending a short message CP-Data (package RP-Data), the RRC connection is automatically released, as shown in fig. 4, because the terminal and the network lose connection, the network cannot issue an RP-Ack to the terminal.
For these abnormal scenes, the current implementation scheme in the industry is that after sending a short message CP-Data (package RP-Data), a terminal starts a timer in the SM-RL layer for about 45 seconds to wait for receiving the CP-Data (package relay layer correct response signaling RP-Ack) sent by the short message center, if the timer is overtime and the RP-Ack is not received yet, the terminal starts automatic retransmission, which results in a long short message sending delay, and a user needs to wait for one minute or more to send the short message (the mobile phone screen displays that the message is being sent).
Disclosure of Invention
The invention aims to provide a method and a terminal for automatically retransmitting short messages, and solves the problem that the time for the terminal to transmit the short messages is long under the condition that a network side cannot send a transmission report due to the release of a wireless link in the prior art.
In order to solve the above technical problem, an embodiment of the present invention provides a method for automatically retransmitting a short message, including:
sending a short message to a network side, and waiting for a sending report fed back by the network side within a preset time period;
and in the waiting process, if the wireless link is released, the short message is retransmitted after the wireless link is recovered.
Optionally, the step of sending the short message to the network side and waiting for the sending report fed back by the network side within a preset time period includes:
after the short message is encapsulated into a data signaling of the relay layer through the short message relay layer, the data signaling is encapsulated into a control layer data signaling through the connection management sublayer, and finally the data signaling is encapsulated into a non-access layer message through the access layer and sent to a network side;
and starting a timer for waiting for a relay layer correct response signaling fed back by the network side through the short message relay layer.
Optionally, in the waiting process, if the wireless link is released, after the wireless link is recovered, the step of resending the short message includes:
in the waiting process, if the preset condition of wireless link release is met, releasing the wireless link through an access layer, and detecting whether the wireless link is recovered in real time;
and if the detection result is yes, the short message is retransmitted.
Optionally, in the waiting process, if a preset condition for releasing the radio link is met, the step of releasing the radio link through the access stratum includes:
and in the waiting process, if the signal strength value of the cell is less than or equal to a preset value, releasing the wireless link through the access layer.
Optionally, in the waiting process, if the signal strength value of the cell is less than or equal to the preset value, the step of releasing the radio link through the access stratum includes:
in the waiting process, if the signal intensity value of the cell is smaller than the signal intensity value of an adjacent system or an adjacent cell, reporting a measurement report of an inter-system or an inter-frequency to a base station through an access layer so as to enable the base station to judge and redirect;
and receiving a radio resource control connection release instruction issued by the base station according to the measurement report through an access layer, and releasing a radio link according to the radio resource control connection release instruction.
Optionally, in the waiting process, if the signal strength value of the cell is less than or equal to the preset value, the step of releasing the radio link through the access stratum includes:
in the waiting process, if the signal strength value of the cell is equal to zero, the wireless link is automatically released through the access layer.
Optionally, the step of detecting whether the wireless link is recovered in real time specifically includes:
and detecting whether the cells meeting the conditions are searched in real time and the residence is successful.
Optionally, after the radio link is released, before the radio link is recovered, the method further includes:
and stopping waiting for the report sent by the network side feedback.
Optionally, the step of stopping waiting for the transmission report of the network side feedback includes:
generating a radio link release notification by an access stratum;
and stopping waiting for a sending report fed back by the network side according to the wireless link release notice through a short message relay layer.
Optionally, the step of resending the short message after the wireless link is restored includes:
after the wireless link is recovered, generating a wireless link recovery notice through an access layer;
and retransmitting the short message according to the wireless link recovery notice through the short message relay layer.
The present invention also provides a terminal, including:
the short message sending module is used for sending a short message to the network side and waiting for a sending report fed back by the network side within a preset time period;
and the short message retransmission module is used for retransmitting the short message after the wireless link is recovered if the wireless link is released in the waiting process.
Optionally, the short message sending module includes:
the first processing submodule is used for encapsulating the short message into a relay layer data signaling through the short message relay layer, then encapsulating the relay layer data signaling into a control layer data signaling through the connection management sublayer, and finally encapsulating the control layer data signaling into a non-access layer message through the access layer and sending the non-access layer message to the network side;
and the starting submodule is used for starting a timer for waiting for a relay layer correct response signaling fed back by the network side through the short message relay layer.
Optionally, the short message retransmission module includes:
the second processing submodule is used for releasing the wireless link through the access layer and detecting whether the wireless link is recovered or not in real time if the preset condition of the wireless link release is met in the waiting process;
and the first retransmission submodule is used for retransmitting the short message when the detection result is yes.
Optionally, the second processing sub-module includes:
and the third processing submodule is used for releasing the wireless link through the access stratum if the signal strength value of the cell is less than or equal to the preset value in the waiting process.
Optionally, the third processing sub-module includes:
a reporting submodule, configured to report a measurement report of a different system or a different frequency to a base station through an access layer in a waiting process if a signal strength value of a local cell is smaller than a signal strength value of an adjacent system or an adjacent cell, so that the base station determines to redirect;
and the receiving and releasing submodule is used for receiving a radio resource control connection releasing instruction sent by the base station according to the measurement report through an access layer and releasing a radio link according to the radio resource control connection releasing instruction.
Optionally, the third processing sub-module includes:
and the automatic release submodule is used for automatically releasing the wireless link through the access layer if the signal strength value of the cell is equal to zero in the waiting process.
Optionally, the second processing sub-module is specifically configured to:
and detecting whether the cells meeting the conditions are searched in real time and the residence is successful.
Optionally, the short message retransmission module is further configured to stop waiting for a report sent by the network side feedback after the wireless link is released and before the wireless link is recovered.
Optionally, the short message retransmission module includes:
the first generation submodule is used for generating a wireless link release notice through an access layer;
and the stopping submodule is used for stopping waiting for the sending report fed back by the network side according to the wireless link release notice through the short message relay layer.
Optionally, the short message retransmission module includes:
the second generation submodule is used for generating a wireless link recovery notice through the access layer after the wireless link is recovered;
and the second retransmission submodule is used for retransmitting the short message according to the wireless link recovery notice through the short message relay layer.
The technical scheme of the invention has the following beneficial effects:
in the above scheme, in the process of waiting for the transmission report fed back by the network side within the preset time period after the short message is transmitted, if the wireless link is released, the short message is automatically retransmitted after the wireless link is recovered without waiting for the end of the timing time of the timer, so that the delay time of the short message retransmission is greatly shortened, and the user experience is improved.
Drawings
FIG. 1 is a diagram of a short message service protocol stack in the prior art;
FIG. 2 is a schematic diagram of a MO SMS flow of the prior art;
fig. 3 is a schematic diagram of a LTE-to-3G redirection signaling flow in the prior art;
fig. 4 is a schematic view of a scenario that an LTE terminal cannot receive an RP-Ack in the prior art;
FIG. 5 is a flowchart illustrating a method for automatically retransmitting a short message according to a first embodiment of the present invention;
FIG. 6 is a flowchart illustrating a method for automatically retransmitting a short message according to a second embodiment of the present invention;
FIG. 7 is a flowchart illustrating a method for automatically retransmitting a short message according to a third embodiment of the present invention;
fig. 8 is a schematic structural diagram of a terminal according to a fourth embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The invention provides various solutions for solving the problem that the delay time of the terminal sending short message is long under the condition that the network side can not send the sending report due to the release of the wireless link in the prior art, and the method specifically comprises the following steps:
example one
As shown in fig. 5, a method for automatically retransmitting a short message according to an embodiment of the present invention includes:
step 51: sending a short message to a network side, and waiting for a sending report fed back by the network side within a preset time period;
step 52: and in the waiting process, if the wireless link is released, the short message is retransmitted after the wireless link is recovered.
In the method for automatically retransmitting the short message provided by the embodiment of the invention, after the short message is transmitted, in the process of waiting for the transmission report fed back by the network side within the preset time period, if the wireless link is released, the short message is automatically retransmitted after the wireless link is recovered, the end of the timing time of the timer is not required to be waited, the delay time of the short message retransmission is greatly shortened, and the user experience is improved.
The "while waiting" indicates that the timer set for the transmission report fed back by the receiving network side has not timed out.
Specifically, the step of sending the short message to the network side and waiting for the sending report fed back by the network side within the preset time period includes: after the short message is encapsulated into a data signaling of the relay layer through the short message relay layer, the data signaling is encapsulated into a control layer data signaling through the connection management sublayer, and finally the data signaling is encapsulated into a non-access layer message through the access layer and sent to a network side; and starting a timer for waiting for a relay layer correct response signaling fed back by the network side through the short message relay layer.
Wherein, in the waiting process, if the wireless link is released, the step of resending the short message after the wireless link is recovered comprises: in the waiting process, if the preset condition of wireless link release is met, releasing the wireless link through an access layer, and detecting whether the wireless link is recovered in real time; and if the detection result is yes, the short message is retransmitted.
Specifically, in the waiting process, if a preset condition for releasing the radio link is met, the step of releasing the radio link through the access stratum includes: and in the waiting process, if the signal strength value of the cell is less than or equal to a preset value, releasing the wireless link through the access layer.
Corresponding to the case of redirection, if the signal strength value of the cell is less than or equal to the preset value during the waiting process, the step of releasing the radio link through the access stratum includes: in the waiting process, if the signal intensity value of the cell is smaller than the signal intensity value of an adjacent system or an adjacent cell, reporting a measurement report of an inter-system or an inter-frequency to a base station through an access layer so as to enable the base station to judge and redirect; and receiving a radio resource control connection release instruction issued by the base station according to the measurement report through an access layer, and releasing a radio link according to the radio resource control connection release instruction.
Corresponding to the offline condition, if the signal strength value of the cell is less than or equal to the preset value during the waiting process, the step of releasing the radio link through the access layer includes: in the waiting process, if the signal strength value of the cell is equal to zero, the wireless link is automatically released through the access layer.
The step of detecting whether the wireless link is recovered in real time specifically comprises: and detecting whether the cells meeting the conditions are searched in real time and the residence is successful.
Specifically, the step of resending the short message after the wireless link is restored includes: after the wireless link is recovered, generating a wireless link recovery notice through an access layer; and retransmitting the short message according to the wireless link recovery notice through the short message relay layer.
Example two
As shown in fig. 6, the method for automatically retransmitting a short message in the second embodiment of the present invention includes:
step 61: sending a short message to a network side, and waiting for a sending report fed back by the network side within a preset time period;
step 62: and in the waiting process, if the wireless link is released, stopping waiting for the sending report fed back by the network side, and resending the short message after the wireless link is recovered.
In the method for automatically retransmitting the short message provided by the embodiment of the invention, if the wireless link is released in the process of waiting for the sending report fed back by the network side within the preset time period after the short message is sent, the sending report fed back by the network side is stopped waiting, and the short message is automatically retransmitted after the wireless link is recovered, so that the end of the timing time of the timer is not required, the delay time of the short message retransmission is greatly shortened, the condition that the short message is repeatedly sent again after the timer is overtime after the wireless link is recovered is avoided, the user requirement is met with high quality, and the user experience is improved.
Specifically, the step of stopping waiting for the transmission report fed back by the network side includes: generating a radio link release notification by an access stratum; and stopping waiting for a sending report fed back by the network side according to the wireless link release notice through a short message relay layer.
In the second embodiment of the present invention, other steps except "stop waiting for the sending report fed back by the network side" may all adopt implementation embodiments consistent with the embodiments.
EXAMPLE III
As shown in fig. 7, the method for automatically retransmitting a short message in the third embodiment of the present invention includes:
step 71: after encapsulating the short message in RP-Data by an SM-RL layer of the terminal, delivering the short message to a CM-sublayer layer to be sent out by a bottom layer, and starting a timer waiting for RP-ACK;
step 72: judging whether RP-ACK is received or not during the period of the timer, if not, entering a step 74, and if so, entering a step 73;
step 73: the terminal displays that the short message is successfully sent;
step 74: judging whether the AS layer of the terminal notifies SM-RL layer wireless link release during waiting for the timer, if so, entering step 76, and if not, entering step 75;
step 75: when the waiting timer is overtime, returning to the step 71;
step 76: the SM-RL layer of the terminal stops waiting for the timer of the RP-ACK;
step 77: after the terminal successfully resides in the cell again, the AS layer of the terminal reports to the SM-RL layer, the wireless link is informed to recover, and the step 71 is returned.
From the above, the present invention provides a mechanism for realizing automatic short message retransmission by establishing interaction between an AS layer and an SM-RL layer, aiming at the problem that the short message transmission delay of a terminal is long in a scenario that a network cannot issue an RP-Ack due to wireless link release.
In summary, when the terminal does not receive the sending report sent by the short message center after sending the short message, if the wireless link is released, the terminal stops waiting for sending the report, and automatically resends the short message immediately after the wireless link is recovered. The wireless link release scenario can be, but is not limited to, redirection from LTE to 3G/2G, or redirection between base stations in LTE system, or a talk-around scenario.
The following illustrates a scheme provided by the third embodiment of the present invention with respect to different scenarios.
Scenario one, redirection from LTE to 3G/2G, or redirection between base stations in LTE system
1) After packaging the short message in RP-Data by the SM-RL layer of the terminal, delivering the short message to the CM sublayer layer to be sent by the bottom layer (AS layer), starting a timer waiting for the RP-Ack by the SM-RL layer, and judging whether the RP-Ack is received during the timer;
2) the base station judges and redirects the reported different system/different frequency measurement report according to the AS layer when the signal of the cell is weak and the signal of the adjacent system or the adjacent cell is strong, wherein the redirection can be from LTE to 3G/2G or redirection between the base stations in the LTE system, and sends an RRC Connection Release radio resource control Connection Release message to the AS layer;
3) the AS layer releases the RRC Connection after receiving the RRC Connection Release message;
4) the AS layer reports to the SM-RL layer and informs the release of the wireless link;
5) the SM-RL layer judges that the timer is not overtime and does not receive the RP-Ack, and stops waiting for the timer of the RP-Ack;
6) if the cell is redirected from LTE to 3G/2G, the AS layer of the terminal searches a 3G/2G cell and reports the cell to the SM-RL layer after the cell is successfully resided, and the wireless link is informed to recover; if the redirection is carried out among base stations in the LTE system, the AS layer of the terminal searches an LTE cell and reports the LTE cell to the SM-RL layer after the LTE cell is successfully resided, and a wireless link is informed to recover;
7) and the SM-RL layer of the terminal encapsulates the short message into RP-Data again and then delivers the short message to the CM sublayer layer to be sent out by the bottom layer (AS layer).
Scene two, off-line scene
1) After packaging the short message in RP-Data by the SM-RL layer of the terminal, the short message is delivered to the CM sublayer and sent out by the bottom layer (AS layer), and the SM-RL layer starts a timer waiting for RP-Ack;
2) the AS layer of the terminal is out of step (no signal is received and no downlink signal is tracked) to cause the failure of a wireless link, and the AS layer automatically releases RRC connection and enters a offline state;
3) the AS layer of the terminal reports to the SM-RL layer to inform the release of the wireless link;
4) the SM-RL layer judges that the timer is not overtime and does not receive the RP-Ack, and stops waiting for the timer of the RP-Ack;
5) when the AS layer of the terminal searches a proper cell and resides successfully, reporting to the SM-RL layer, and informing the recovery of a wireless link;
6) and the SM-RL layer of the terminal encapsulates the short message into RP-Data again and then delivers the short message to the CM sublayer layer to be sent out by the bottom layer (AS layer).
The scheme provided by the third embodiment of the invention starts from the angle of shortening the delay time of the retransmitted short message, does not need to wait for the timeout of a timer for receiving the RP-Ack, and the terminal can retransmit the short message immediately after redirection is finished or off-line disappears, thereby greatly shortening the delay time of the retransmitted short message (shortening more than tens of seconds) and improving the user experience.
The scheme provided by the third embodiment of the invention can be applied to LTE terminals, 3G terminals and 2G terminals.
Example four
As shown in fig. 8, a terminal according to a fourth embodiment of the present invention includes:
the short message sending module 81 is configured to send a short message to the network side, and wait for a sending report fed back by the network side within a preset time period;
the short message retransmission module 82 is configured to, in the waiting process, retransmit the short message after the wireless link is recovered if the wireless link is released.
In the process that the terminal waits for the sending report fed back by the network side within the preset time period after sending the short message, if the wireless link is released, the terminal automatically resends the short message after the wireless link is recovered without waiting for the end of the timing time of the timer, so that the delay time of the short message retransmission is greatly shortened, and the user experience is improved.
The "while waiting" indicates that the timer set for the transmission report fed back by the receiving network side has not timed out.
Specifically, the short message sending module includes: the first processing submodule is used for encapsulating the short message into a relay layer data signaling through the short message relay layer, then encapsulating the relay layer data signaling into a control layer data signaling through the connection management sublayer, and finally encapsulating the control layer data signaling into a non-access layer message through the access layer and sending the non-access layer message to the network side; and the starting submodule is used for starting a timer for waiting for a relay layer correct response signaling fed back by the network side through the short message relay layer.
Wherein, the short message retransmission module comprises: the second processing submodule is used for releasing the wireless link through the access layer and detecting whether the wireless link is recovered or not in real time if the preset condition of the wireless link release is met in the waiting process;
and the first retransmission submodule is used for retransmitting the short message when the detection result is yes.
Specifically, the second processing sub-module includes: and the third processing submodule is used for releasing the wireless link through the access stratum if the signal strength value of the cell is less than or equal to the preset value in the waiting process.
Corresponding to the case of redirection, the third processing submodule includes: a reporting submodule, configured to report a measurement report of a different system or a different frequency to a base station through an access layer in a waiting process if a signal strength value of a local cell is smaller than a signal strength value of an adjacent system or an adjacent cell, so that the base station determines to redirect; and the receiving and releasing submodule is used for receiving a radio resource control connection releasing instruction sent by the base station according to the measurement report through an access layer and releasing a radio link according to the radio resource control connection releasing instruction.
Corresponding to a case of offline, the third processing submodule includes: and the automatic release submodule is used for automatically releasing the wireless link through the access layer if the signal strength value of the cell is equal to zero in the waiting process.
Wherein the second processing sub-module is specifically configured to: and detecting whether the cells meeting the conditions are searched in real time and the residence is successful.
The short message retransmission module is also used for stopping waiting for a sending report fed back by the network side after the wireless link is released and before the wireless link is recovered.
Specifically, the short message retransmission module includes: the first generation submodule is used for generating a wireless link release notice through an access layer; and the stopping submodule is used for stopping waiting for the sending report fed back by the network side according to the wireless link release notice through the short message relay layer.
In detail, the short message retransmission module includes: the second generation submodule is used for generating a wireless link recovery notice through the access layer after the wireless link is recovered; and the second retransmission submodule is used for retransmitting the short message according to the wireless link recovery notice through the short message relay layer.
The implementation embodiments of the method for automatically retransmitting the short message are all applicable to the embodiment of the terminal, and the same technical effect can be achieved.
Many of the functional units described in this specification have been referred to as modules/sub-modules in order to more particularly emphasize their implementation independence.
In embodiments of the invention, the modules/sub-modules may be implemented in software for execution by various types of processors. An identified module of executable code may, for instance, comprise one or more physical or logical blocks of computer instructions which may, for instance, be constructed as an object, procedure, or function. Nevertheless, the executables of an identified module need not be physically located together, but may comprise disparate instructions stored in different bits which, when joined logically together, comprise the module and achieve the stated purpose for the module.
Indeed, a module of executable code may be a single instruction, or many instructions, and may even be distributed over several different code segments, among different programs, and across several memory devices. Likewise, operational data may be identified within the modules and may be embodied in any suitable form and organized within any suitable type of data structure. The operational data may be collected as a single data set, or may be distributed over different locations including over different storage devices, and may exist, at least partially, merely as electronic signals on a system or network.
When a module can be implemented by software, considering the level of existing hardware technology, a module implemented by software may build a corresponding hardware circuit to implement a corresponding function, without considering cost, and the hardware circuit may include a conventional Very Large Scale Integration (VLSI) circuit or a gate array and an existing semiconductor such as a logic chip, a transistor, or other discrete components. A module may also be implemented in programmable hardware devices such as field programmable gate arrays, programmable array logic, programmable logic devices or the like.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (16)
1. A method for automatically retransmitting short messages, comprising:
sending a short message to a network side, and waiting for a sending report fed back by the network side within a preset time period;
in the waiting process, if the wireless link is released, after the wireless link is recovered, the method resends the short message, which includes: in the waiting process, if the preset condition of wireless link release is met, releasing the wireless link through an access layer, and detecting whether the wireless link is recovered in real time; if the detection result is yes, the short message is sent again, and after the wireless link is recovered, a wireless link recovery notice is generated through an access layer; and retransmitting the short message according to the wireless link recovery notice through the short message relay layer.
2. The method of claim 1, wherein the step of sending the short message to the network side and waiting for the sending report fed back by the network side within a preset time period comprises:
after the short message is encapsulated into a data signaling of the relay layer through the short message relay layer, the data signaling is encapsulated into a control layer data signaling through the connection management sublayer, and finally the data signaling is encapsulated into a non-access layer message through the access layer and sent to a network side;
and starting a timer for waiting for a relay layer correct response signaling fed back by the network side through the short message relay layer.
3. The method of claim 1, wherein the step of releasing the radio link through the access stratum if a predetermined condition for releasing the radio link is satisfied during the waiting process comprises:
and in the waiting process, if the signal strength value of the cell is less than or equal to a preset value, releasing the wireless link through the access layer.
4. The method of claim 3, wherein the step of releasing the radio link through the access stratum in the waiting process if the signal strength value of the local cell is less than or equal to a preset value comprises:
in the waiting process, if the signal intensity value of the cell is smaller than the signal intensity value of an adjacent system or an adjacent cell, reporting a measurement report of an inter-system or an inter-frequency to a base station through an access layer so as to enable the base station to judge and redirect;
and receiving a radio resource control connection release instruction issued by the base station according to the measurement report through an access layer, and releasing a radio link according to the radio resource control connection release instruction.
5. The method of claim 3, wherein the step of releasing the radio link through the access stratum in the waiting process if the signal strength value of the local cell is less than or equal to a preset value comprises:
in the waiting process, if the signal strength value of the cell is equal to zero, the wireless link is automatically released through the access layer.
6. The method according to claim 1, wherein the step of detecting whether the radio link is recovered in real time specifically comprises:
and detecting whether the cells meeting the conditions are searched in real time and the residence is successful.
7. The method of claim 1, wherein after releasing the wireless link, prior to the wireless link resuming, the method further comprises:
and stopping waiting for the report sent by the network side feedback.
8. The method of claim 7, wherein the step of ceasing to wait for the transmission report of the network-side feedback comprises:
generating a radio link release notification by an access stratum;
and stopping waiting for a sending report fed back by the network side according to the wireless link release notice through a short message relay layer.
9. A terminal, comprising:
the short message sending module is used for sending a short message to the network side and waiting for a sending report fed back by the network side within a preset time period;
the short message retransmission module is used for retransmitting the short message after the wireless link is recovered if the wireless link is released in the waiting process; the short message retransmission module comprises:
the second processing submodule is used for releasing the wireless link through the access layer and detecting whether the wireless link is recovered or not in real time if the preset condition of the wireless link release is met in the waiting process;
the first retransmission submodule is used for retransmitting the short message when the detection result is yes;
the first generation submodule is used for generating a wireless link release notice through an access layer;
and the stopping submodule is used for stopping waiting for the sending report fed back by the network side according to the wireless link release notice through the short message relay layer.
10. The terminal of claim 9, wherein the short message sending module comprises:
the first processing submodule is used for encapsulating the short message into a relay layer data signaling through the short message relay layer, then encapsulating the relay layer data signaling into a control layer data signaling through the connection management sublayer, and finally encapsulating the control layer data signaling into a non-access layer message through the access layer and sending the non-access layer message to the network side;
and the starting submodule is used for starting a timer for waiting for a relay layer correct response signaling fed back by the network side through the short message relay layer.
11. The terminal of claim 9, wherein the second processing sub-module comprises:
and the third processing submodule is used for releasing the wireless link through the access stratum if the signal strength value of the cell is less than or equal to the preset value in the waiting process.
12. The terminal of claim 11, wherein the third processing sub-module comprises:
a reporting submodule, configured to report a measurement report of a different system or a different frequency to a base station through an access layer in a waiting process if a signal strength value of a local cell is smaller than a signal strength value of an adjacent system or an adjacent cell, so that the base station determines to redirect;
and the receiving and releasing submodule is used for receiving a radio resource control connection releasing instruction sent by the base station according to the measurement report through an access layer and releasing a radio link according to the radio resource control connection releasing instruction.
13. The terminal of claim 11, wherein the third processing sub-module comprises:
and the automatic release submodule is used for automatically releasing the wireless link through the access layer if the signal strength value of the cell is equal to zero in the waiting process.
14. The terminal of claim 9, wherein the second processing submodule is specifically configured to:
and detecting whether the cells meeting the conditions are searched in real time and the residence is successful.
15. The terminal of claim 9, wherein the short message retransmission module is further configured to stop waiting for the transmission report of the network-side feedback before the radio link is recovered after the radio link is released.
16. The terminal of claim 9, wherein the short message retransmission module comprises:
the second generation submodule is used for generating a wireless link recovery notice through the access layer after the wireless link is recovered;
and the second retransmission submodule is used for retransmitting the short message according to the wireless link recovery notice through the short message relay layer.
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| US10271185B1 (en) * | 2017-10-20 | 2019-04-23 | Mediatek Singapore Pte. Ltd. | Method and apparatus for short message service re-transmission in mobile communications |
| CN108134989B (en) * | 2017-12-21 | 2021-04-27 | Oppo广东移动通信有限公司 | Method and device for detecting LTE network residence result and computer storage medium |
| CN109769272B (en) * | 2018-11-22 | 2021-04-16 | 京信通信系统（中国）有限公司 | Method and device for sending customized information, computer storage medium and equipment |
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| CN102316426A (en) * | 2010-07-09 | 2012-01-11 | 中国移动通信集团广东有限公司 | Short message retransmission method and network equipment |
| WO2012171173A1 (en) * | 2011-06-14 | 2012-12-20 | 华为技术有限公司 | Method and terminal for transmitting short message after handover of terminal |
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