CN106412859A - Short message automatic resending method and terminal - Google Patents

Abstract

The present invention provides a method and a terminal for automatically resending a short message, wherein the method for automatically resending a short message includes: 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; In , if the wireless link is released, the short message will be sent again after the wireless link is restored. The scheme provided by the present invention waits for the sending report fed back by the network side within a preset period of time after sending the short message. If the wireless link is released, the short message is automatically resent after the wireless link is restored without waiting. When the timing time of the timer ends, the delay time for resending the short message is greatly shortened, and the user experience is improved.

Description

A method and terminal for automatically resending short messages

technical field

The invention relates to the field of wireless technology, in particular to a method and terminal for automatically resending short messages.

Background technique

For the sending and resending of short messages in the prior art, the introduction is as follows:

1. Short message sending mechanism of circuit domain fallback (CSFB) mobile phone

LTE (Long Term Evolution), as a follow-up evolution technology of 3G, is recognized by the industry as the evolution direction of the next generation of mobile communications due to its unique technical advantages such as high data rate, low latency, and flexible bandwidth configuration. In the 2/3G era, SMS services are carried in the circuit domain, while LTE only has a packet domain and no circuit domain. To continue to support SMS, a special solution is required. The SMS over SGs (short message SMS is transmitted through the interface SGs between the mobile switching center and the mobility management entity) scheme is adopted for the CSFB mobile phone short message. The core idea of the SMSover SGs scheme is that LTE and the circuit domain cooperate to provide short messages, that is, the mobile phone is accessed by the LTE network. The routing and delivery of short messages is implemented by the circuit domain.

Among them, the short message service protocol stack is shown in Figure 1, which can be divided into SM-AL (Short Message Application Layer, short message application layer), SM-TL (Short Message Transfer Layer, short message transmission layer), SM-RL (Short Message Relay Layer , SMS relay layer), CM sublayer (ConnectionManagement sublayer, connection management sublayer), AS layer (access layer). The short message compiled by the terminal is encapsulated as relay layer data signaling (RP-Data) at the SM-RL layer, and then encapsulated as control layer data signaling (CP-Data) at the CM sublayer layer. MSC is a mobile switch, MS is a mobile terminal, SMR is a short message relay, SMC is a short message connection management, SM-RP protocol is a short message relay protocol, SM-CP protocol is a short message connection management protocol, and SMS is a (Short Message) short message.

The service process of the SMS over SGs solution can be divided into two cases: MO (Mobile Originating, mobile terminal initiation) and MT (Mobile Terminating, mobile terminal reception). The MO SMS process is shown in Figure 2, where the EPS/IMSI attach procedure is EPS/IMSI attachment process, UE triggeredService Request is the service request triggered by the terminal, Uplink NAS Transport is the uplink NAS direct transmission, NAS is the non-access layer, Uplink Unitdata is the uplink unit data, Forward Short Message is forwarding short messages, and Message transfer is message Forwarding, Delivery report is delivery report, DownlinkUnitdata is downlink unit data, Downlink NAS Transport is downlink NAS direct transmission, ReleaseRequest is release request, HLR/HSS is home location register/home subscriber server; SMS-IWMSC is short message service interworking mobile switching Center, SC is short message center, MSC/VLR is mobile exchange/visitor location register, MME is mobility management entity.

Corresponding to Figure 2, the complete process when the terminal is in the idle state is as follows:

21. The terminal completes the joint EPS/IMSI attach process.

22. The terminal initiates a short message service request.

23. The short message compiled by the terminal is encapsulated as RP-Data at the SM-RL layer, then encapsulated as CP-Data at the CM sublayer layer, and finally encapsulated in a non-access layer (NAS) message and sent to the MME.

24. The MME sends an Uplink Unitdata (Uplink Unitdata) message to the MSC/VLR, and transmits the short message to the MSC/VLR.

24a. The MSC/VLR sends a downlink unit data (Downlink Unitdata) message to confirm receipt of the short message to the terminal.

25-28. The short message is sent to the short message center for processing, and returns a sending report, which is encapsulated at the SM-RL layer as relay layer correct response signaling (RP-Ack).

29. The MSC/VLR forwards the received delivery report to the MME.

210. The MME encapsulates the sending report into a NAS message, and sends it to the terminal.

211-212. The terminal confirms receipt of the transmission report to the MSC/VLR.

213. The MSC/VLR sends a release request message to the MME, notifying that the sending of the short message is completed.

The trigger point for the terminal to display that the SMS has been successfully sent is step 210. When the terminal receives the CP-Data (encapsulated RP-Ack) issued by the SMS center, that is, the Delivery Report, the terminal will only display it after receiving the RP-ACK. SMS sent successfully. After the terminal sends the short message CP-Data (encapsulated RP-Data) in step 3, it will start a timer on the SM-RL layer for about 45 seconds, waiting to receive the CP-Data (encapsulated RP-Ack) issued by the SMS center, If the timer expires and has not received the RP-Ack, the terminal starts automatic retransmission.

2. LTE different system redirection

The LTE network needs to interoperate with 2G and 3G to solve the needs of insufficient coverage of the LTE network, lack of support for some services in the early stage, and load balancing between networks. When the LTE terminal is in the connected state, it can access the 3G network through redirection: the network side indicates the target network information for the terminal, such as frequency point, etc., and the terminal accesses the target network with the help of the network.

The signaling process of LTE to 3G redirection is shown in Figure 3, where RRC ConnectionReconfiguration (MeasConfig) is RRC connection reconfiguration (carrying measurement configuration), MeasurementReport is a measurement report, and Redirect to EUTRAN determined by NW is determined by the network to redirect to EUTRAN, RRC Connection Release (RedirectedCarrierInfo) is RRC connection release (carrying redirection frequency point information), 4G to 3G reselection procedure is 4G to 3G cell reselection procedure, S1Release is S1 interface release, Service request is service request, RAB Assignment Request is the RAB assignment request, RAB Assignment Response is the RAB assignment response, Update PDPRequest is the update PDP context request, and Update PDP Response is the update PDP context response;

RAB is radio access bearer, PDP is packet data protocol, GnGp SGSN is serving GPRS support node based on Gn interface and Gp interface, Serving Gw is serving gateway, PDN GW is packet data gateway, HSS is home user server, RNC is wireless A network controller, UE is user equipment, and eNodeB is a base station.

The specific steps are as follows:

31. The eNodeB sends the measurement control to the UE, that is, the RRC Connection Reconfiguration message (carrying the configuration of different system measurement events);

32. When the measured signal quality meets the different system event threshold, the UE sends a different system measurement report to the eNodeB;

33. The eNodeB makes a redirection decision and sends an RRC connectionRelease message carrying redirection information to the UE;

34-316, 4G to 3G cell reselection process;

317. The eNodeB sends a UE Context Release Request message to the MME; the MME sends a UE Context Release Command message to the eNodeB to release the S1 connection; the eNodeB returns UE ContextRelease Complete, and the S1 connection is released successfully;

318. The UE sends a service request to the GnGp SGSN;

319a. The GnGp SGSN sends a RAB assignment request to the RNC;

319b. The RNC feeds back the RAB assignment response to the GnGp SGSN;

320a. The GnGp SGSN sends a PDP context update request to the PDN GW;

320b. The PDN GW feeds back a PDP context update response to the GnGp SGSN.

In addition, it is well known that in some abnormal scenarios, the terminal fails to receive the RP-Ack and resends the SMS:

Scenario 1, the above redirection scenario, such as the redirection scenario from LTE to 3G/2G, when the LTE terminal sends the short message control layer data signaling CP-Data (encapsulating the relay layer data signaling RP-Data) to the LTE terminal immediately During 3G/2G redirection, the network cannot deliver the RP-Ack to the terminal, specifically: during the redirection process, the terminal receives the RRC connection Release message from the eNB to release the RRC connection and access the 3G/2G network, while The MSC that forwards the SMS does not know the RAT change, and receives the SMSC's downlink message (RP-Ack) and sends it to the MME, but the MME releases the connection due to the redirection process, and the MME has no terminal context, so it cannot send the RP-Ack to the terminal, as shown in Figure 4. For the redirection between base stations in the LTE system, there is a similar situation. Due to the release of the RRC connection, the MME cannot deliver the RP-Ack to the terminal.

Scenario 2: Off-network scenario. When the LTE terminal is off-network immediately after sending the short message CP-Data (encapsulated RP-Data), the RRC connection is automatically released. As shown in Figure 4, the network cannot connect the RP -Ack is sent to the terminal.

For these abnormal scenarios, the current implementation scheme in the industry is that after the terminal sends the SMS CP-Data (encapsulated RP-Data), it will start a timer at the SM-RL layer for about 45 seconds, waiting to receive the CP-Data sent by the SMS center. Data (encapsulating the relay layer to correctly respond to the signaling RP-Ack), if the timer expires and has not received the RP-Ack, the terminal will start automatic resending, resulting in a long delay in sending the message, and the user needs to wait for one minute or more after sending the message The above text messages can only be sent (the screen of the mobile phone shows that the message is being sent).

Contents of the invention

The purpose of the present invention is to provide a method and a terminal for automatically resending short messages, so as to solve the problem in the prior art that the delay time for sending short messages by the terminal is long in the scenario where the wireless link is released and the network side cannot send a transmission report.

In order to solve the above technical problems, an embodiment of the present invention provides a method for automatically resending short messages, including:

Send a short message to the network side, and wait for the sending report fed back by the network side within a preset time period;

During the waiting process, if the wireless link is released, the short message will be sent again after the wireless link is restored.

Optionally, the step of 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 includes:

After the short message is encapsulated into relay layer data signaling through the short message relay layer, it is then encapsulated into control layer data signaling through the connection management sublayer, and finally encapsulated into a non-access layer message through the access layer and sent to the network side;

The timer for waiting for the correct response signaling of the relay layer fed back by the network side is started by the short message relay layer.

Optionally, during the waiting process, if the wireless link is released, after the wireless link is restored, the step of resending the short message includes:

During the waiting process, if the preset conditions for releasing the wireless link are met, the wireless link is released through the access layer, and it is detected in real time whether the wireless link is restored;

When the detection result is yes, resend the short message.

Optionally, during the waiting process, if the preset condition for releasing the wireless link is met, the step of releasing the wireless link through the access layer includes:

During the waiting process, if the signal strength value of the cell is less than or equal to the preset value, the wireless link is released through the access layer.

Optionally, during 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 wireless link through the access layer includes:

During the waiting process, if the signal strength value of the current cell is smaller than the signal strength value of the neighboring system or the neighboring cell, report the measurement report of the different system or different frequency to the base station through the access layer, so that the base station decides to redirect;

receiving the radio resource control connection release instruction issued by the base station according to the measurement report through the access layer, and releasing the radio link according to the radio resource control connection release instruction.

Optionally, during 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 wireless link through the access layer includes:

During 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 in real time whether the wireless link is restored is specifically:

Check in real time whether a cell that meets the conditions is found and resides successfully.

Optionally, after the wireless link is released, before the wireless link is restored, the method further includes:

Stop waiting for the transmission report fed back by the network side.

Optionally, the step of stopping waiting for the transmission report fed back by the network side includes:

Generate a wireless link release notification through the access layer;

The short message relay layer stops waiting for the sending report fed back by the network side according to the wireless link release notification.

Optionally, after the wireless link is recovered, the step of resending the short message includes:

After the wireless link is restored, a wireless link recovery notification is generated through the access layer;

The short message is resent through the short message relay layer according to the wireless link recovery notification.

The present invention also provides a terminal, including:

The short message sending module is used to send short messages to the network side, and wait for the sending report fed back by the network side within a preset time period;

The short message resending module is used to resend the short message after the wireless link is restored if the wireless link is released during the waiting process.

Optionally, the short message sending module includes:

The first processing sub-module is used to encapsulate the short message into the relay layer data signaling through the short message relay layer, then encapsulate it into the control layer data signaling through the connection management sublayer, and finally encapsulate it into the non-access layer through the access layer The message is sent to the network side;

The starting sub-module is used to start a timer for waiting for the correct response signaling of the relay layer fed back from the network side through the short message relay layer.

Optionally, the short message resending module includes:

The second processing submodule is used to release the wireless link through the access layer if the preset condition for wireless link release is met during the waiting process, and detect whether the wireless link is restored in real time;

The first resending submodule is used to resend the short message when the detection result is yes.

Optionally, the second processing submodule includes:

The third processing sub-module is used to release the wireless link through the access layer if the signal strength value of the local cell is less than or equal to the preset value during the waiting process.

Optionally, the third processing submodule includes:

The reporting sub-module is used to report the measurement report of the different system or different frequency to the base station through the access layer if the signal strength value of the cell is lower than the signal strength value of the neighboring system or the neighboring cell during the waiting process, so that all The base station judges redirection;

The receiving and releasing submodule is configured to receive, through the access layer, a radio resource control connection release instruction issued by the base station according to the measurement report, and release a radio link according to the radio resource control connection release instruction.

Optionally, the third processing submodule includes:

The automatic release sub-module is used to automatically release the wireless link through the access layer if the signal strength value of the local cell is equal to zero during the waiting process.

Optionally, the second processing submodule is specifically configured to:

Check in real time whether a cell that meets the conditions is found and resides successfully.

Optionally, the short message resending module is further configured to stop waiting for a sending report fed back by the network side after the wireless link is released and before the wireless link is restored.

Optionally, the short message resending module includes:

The first generation submodule is used to generate a wireless link release notification through the access layer;

The stop sub-module is used to stop waiting for the sending report fed back by the network side through the short message relay layer according to the wireless link release notification.

Optionally, the short message resending module includes:

The second generation submodule is used to generate a wireless link recovery notification through the access layer after the wireless link is recovered;

The second resending submodule is used to resend the short message according to the wireless link recovery notification through the short message relay layer.

The beneficial effects of above-mentioned technical scheme of the present invention are as follows:

In the above scheme, the method for automatically resending the short message is to wait for the sending report fed back by the network side within a preset period of time after sending the short message. If the wireless link is released, after the wireless link is restored, the automatic To resend the SMS, there is no need to wait for the end of the timer, which greatly shortens the delay time for resending the SMS and improves the user experience.

Description of drawings

Fig. 1 is the schematic diagram of the short message service protocol stack of prior art;

Fig. 2 is the MO SMS flow diagram of prior art;

Fig. 3 is a schematic flow chart of the prior art LTE to 3G redirection signaling;

FIG. 4 is a schematic diagram of a scenario in which an LTE terminal in the prior art fails to receive an RP-Ack;

FIG. 5 is a schematic flow diagram of a method for automatically resending a short message according to Embodiment 1 of the present invention;

FIG. 6 is a schematic flow diagram of a method for automatically resending a short message according to Embodiment 2 of the present invention;

FIG. 7 is a schematic flow diagram of a method for automatically resending short messages according to Embodiment 3 of the present invention;

FIG. 8 is a schematic diagram of a terminal structure according to Embodiment 4 of the present invention.

detailed description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

The present invention provides a variety of solutions for the problem that the terminal sends a short message with a long delay in the scenario where the wireless link is released and the network side cannot issue a transmission report in the existing technology, and the details are as follows:

Embodiment one

As shown in Figure 5, the method for automatically resending a short message in Embodiment 1 of the present invention includes:

Step 51: 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;

Step 52: During the waiting process, if the wireless link is released, resend the short message after the wireless link is restored.

The method for automatically resending a short message provided in Embodiment 1 of the present invention is to wait for the transmission report fed back by the network side within a preset period of time after sending a short message. After that, the SMS will be resent automatically without waiting for the end of the timer, which greatly shortens the delay time for resending the SMS and improves the user experience.

Wherein, "in the process of waiting" indicates that the timer set for receiving the transmission report fed back by the network side has not expired.

Specifically, the step of 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 includes: after the short message is encapsulated into a relay layer data signaling through the short message relay layer, and then through the connection management The sublayer is encapsulated into control layer data signaling, and finally encapsulated into a non-access layer message through the access layer and sent to the network side; through the SMS relay layer, the timer for waiting for the relay layer to correctly respond to the signaling fed back by the network side is started.

Wherein, during the waiting process, if the wireless link is released, after the wireless link is restored, the step of resending the short message includes: during the waiting process, if the preset condition for wireless link release is met, then Release the wireless link through the access layer, and detect whether the wireless link is restored in real time; when the detection result is yes, resend the short message.

Specifically, during the waiting process, if the preset condition for releasing the wireless link is met, the step of releasing the wireless link through the access layer includes: during the waiting process, if the signal strength value of the cell is less than or If it is equal to the preset value, the wireless link is released through the access layer.

Corresponding to the situation of redirection, during the waiting process, if the signal strength value of the local cell is less than or equal to the preset value, the step of releasing the wireless link through the access layer includes: during the waiting process, if the local cell If the signal strength value of the cell is smaller than the signal strength value of the adjacent system or adjacent cell, the measurement report of the different system or different frequency is reported to the base station through the access layer, so that the base station decides to redirect; the base station is received through the access layer and release the radio link according to the radio resource control connection release instruction delivered according to the measurement report.

Corresponding to the situation of disconnecting from the network, during the waiting process, if the signal strength value of the local cell is less than or equal to the preset value, the step of releasing the wireless link through the access layer includes: during the waiting process, if the local cell If the signal strength value of the cell is equal to zero, the wireless link is automatically released by the access layer.

Wherein, the step of detecting in real time whether the wireless link is restored specifically includes: detecting in real time whether a cell satisfying the conditions is found and camped on successfully.

Specifically, after the wireless link is restored, the step of resending the short message includes: after the wireless link is restored, generating a wireless link restoration notification through the access layer; through the short message relay layer according to the wireless link restoration notification Resend the text message.

Embodiment two

As shown in FIG. 6, the method for automatically resending short messages in Embodiment 2 of the present invention includes:

Step 61: 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;

Step 62: During the waiting process, if the wireless link is released, stop waiting for the transmission report fed back by the network side, and resend the short message after the wireless link is restored.

The method for automatically resending short messages provided by Embodiment 2 of the present invention is to stop waiting for the feedback from the network side if the wireless link is released during the process of waiting for the sending report fed back by the network side within a preset period of time after sending the short message After the wireless link is restored, it will automatically resend the SMS without waiting for the end of the timer, which greatly shortens the delay time for resending the SMS, and avoids the occurrence of timer overtime after the wireless link is restored. In the case of repeatedly sending short messages, the high-quality requirements of users are met and the user experience is improved.

Specifically, the step of stopping waiting for the sending report fed back by the network side includes: generating a wireless link release notification through the access layer; stopping waiting for the sending report fed back by the network side through the short message relay layer according to the wireless link release notification.

In the solution of the second embodiment of the present invention, other steps except "stop waiting for the transmission report fed back by the network side" can adopt the implementation embodiment consistent with the first embodiment.

Embodiment Three

As shown in FIG. 7, the method for automatically resending short messages in Embodiment 3 of the present invention includes:

Step 71: The SM-RL layer of the terminal encapsulates the short message in RP-Data, sends it to the CM-sublayer layer to be sent by the bottom layer, and starts a timer waiting for RP-ACK;

Step 72: judge whether to receive RP-ACK during the timer, if not, go to step 74, if so, go to step 73;

Step 73: The terminal displays that sending the short message is successful;

Step 74: Judging whether the AS layer of the terminal notifies the SM-RL layer of radio link release during the waiting timer, if so, enter step 76, if not, enter step 75;

Step 75: wait for the timer to expire, and return to step 71;

Step 76: The SM-RL layer of the terminal stops waiting for the RP-ACK timer;

Step 77: After the terminal successfully camps in the cell again, the AS layer of the terminal reports to the SM-RL layer to notify the radio link to recover, and returns to step 71.

As can be seen from the above, the present invention aims at the problem that the terminal sends a short message with a long delay in the scenario where the wireless link release causes the network to fail to issue an RP-Ack, and proposes a method of establishing interaction between the AS layer and the SM-RL layer to realize The mechanism for the terminal to automatically resend the SMS.

In summary, when the terminal does not receive the delivery report from the SMS center after sending the message, if the wireless link is released, the terminal stops waiting for the delivery report, and automatically resends the message immediately after the wireless link is restored. The scenario of radio link release may be, but not limited to, redirection from LTE to 3G/2G, or redirection between base stations in an LTE system, or an offline scenario.

The solution provided by Embodiment 3 of the present invention is described below with examples for different scenarios.

Scenario 1: Redirection from LTE to 3G/2G, or redirection between base stations in the LTE system

1) After the SM-RL layer of the terminal encapsulates the short message in RP-Data, it is handed over to the CM sublayer layer and sent by the bottom layer (AS layer), and the SM-RL layer starts a timer waiting for RP-Ack, and judges that during the timer Whether to receive RP-Ack;

2) The base station judges the redirection according to the inter-system/inter-frequency measurement report reported by the AS layer when the signal of the local cell is weak and the signal of the adjacent system or adjacent cell is strong, which can be the redirection from LTE to 3G/2G, or the LTE system For redirection between internal base stations, send 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 to notify the release of the wireless link;

5) The SM-RL layer judges that the timer is not overtime, and has not received the RP-Ack, then stops waiting for the timer of the RP-Ack;

6) If it is redirection from LTE to 3G/2G, after the AS layer of the terminal searches for a 3G/2G cell and resides successfully, it reports to the SM-RL layer to notify the wireless link to resume; if it is a redirection between base stations in the LTE system, After the AS layer of the terminal searches for the LTE cell and resides successfully, it reports to the SM-RL layer and notifies the wireless link recovery;

7) The SM-RL layer of the terminal re-encapsulates the short message in RP-Data, and hands it to the CM sublayer layer to be sent by the bottom layer (AS layer).

Scenario 2. Off-network scenario

1) After the SM-RL layer of the terminal encapsulates the short message in RP-Data, it is handed over to the CM sublayer layer to be sent by the bottom layer (AS layer), and the timer for waiting for RP-Ack is started by the SM-RL layer;

2) The AS layer of the terminal is out of sync (no signal received, no downlink signal tracked) leading to wireless link failure, the AS layer automatically releases the RRC connection and enters the off-network state;

3) The AS layer of the terminal reports to the SM-RL layer to notify the release of the wireless link;

4) The SM-RL layer judges that the timer is not overtime, and has not received the RP-Ack, then stops waiting for the timer of the RP-Ack;

5) After the AS layer of the terminal searches for a suitable cell and successfully resides in it, it reports to the SM-RL layer and notifies the wireless link recovery;

6) The SM-RL layer of the terminal re-encapsulates the short message in RP-Data, and hands it to the CM sublayer layer to be sent by the bottom layer (AS layer).

The solution provided by Embodiment 3 of the present invention starts from the perspective of shortening the delay time of resending short messages, without waiting for the timer for receiving RP-Ack to expire, and the terminal can immediately resend short messages after the redirection is completed or the offline disappears, which greatly shortens the delay time. The delay time for resending text messages has been shortened (shortened by more than tens of seconds), and the user experience has been improved.

The solution provided by Embodiment 3 of the present invention is applicable to LTE terminals, 3G terminals and 2G terminals.

Embodiment Four

As shown in Figure 8, the terminal in Embodiment 4 of the present invention includes:

The short message sending module 81 is used to send short messages to the network side, and waits for the sending report fed back by the network side within a preset time period;

The short message resending module 82 is used for resending the short message after the wireless link is restored if the wireless link is released during the waiting process.

The terminal provided in Embodiment 4 of the present invention waits for the sending report fed back by the network side within a preset period of time after sending the short message. If the wireless link is released, it will automatically resend the message after the wireless link is restored. SMS, no need to wait for the end of the timer time, which greatly shortens the delay time for resending SMS and improves user experience.

Wherein, "in the process of waiting" indicates that the timer set for receiving the transmission report fed back by the network side has not expired.

Specifically, the short message sending module includes: a first processing submodule, which is used to encapsulate the short message into relay layer data signaling through the short message relay layer, and then encapsulate it into control layer data signaling through the connection management sublayer, and finally Encapsulate it into a non-access layer message through the access layer and send it to the network side; the startup submodule is used to start a timer for the correct response signaling of the relay layer that is fed back by the network side through the short message relay layer.

Wherein, the short message resending module includes: a second processing submodule, which is used to release the wireless link through the access layer if the preset condition for wireless link release is met during the waiting process, and detect the wireless link in real time. whether the road is restored;

The first resending submodule is used to resend the short message when the detection result is yes.

Specifically, the second processing submodule includes: a third processing submodule, configured to release the wireless link through the access layer if the signal strength value of the current cell is less than or equal to a preset value during the waiting process.

Corresponding to the case of redirection, the third processing sub-module includes: a reporting sub-module, which is used to pass the access The layer reports a different system or different frequency measurement report to the base station, so that the base station decides to redirect; the receiving release submodule is used to receive the radio resource control connection release issued by the base station according to the measurement report through the access layer instruction, and release the radio link according to the radio resource control connection release instruction.

Corresponding to the off-network situation, the third processing submodule includes: an automatic release submodule, configured to automatically release the wireless link through the access layer if the signal strength value of the local cell is equal to zero during the waiting process.

Wherein, the second processing submodule is specifically configured to: detect in real time whether a cell satisfying the conditions is found and camped on successfully.

It avoids the situation that the timer overtime repeats to send short messages again after the wireless link is restored, and satisfies the needs of users with high quality. The short message resending module is also used to Stop waiting for the transmission report fed back by the network side.

Specifically, the short message resending module includes: a first generation submodule, configured to generate a wireless link release notification through the access layer; a stop submodule, used to stop the wireless link release notification through the short message relay layer Wait for the sending report fed back by the network side.

In detail, the short message resending module includes: a second generating submodule, used to generate a wireless link recovery notification through the access layer after the wireless link is restored; a second resending submodule, used to relay The layer resends the short message according to the wireless link recovery notification.

Wherein, the implementation embodiments of the above-mentioned method for automatically resending short messages are all applicable to the embodiment of the terminal, and can also achieve the same technical effect.

Many functional components described in this specification are referred to as modules/submodules in order to more particularly emphasize the independence of their implementation.

In the embodiments of the present invention, the modules/submodules may be implemented by software so as to be executed by various types of processors. An identified module of executable code may, by way of example, comprise one or more physical or logical blocks of computer instructions which may, for example, be structured as an object, procedure, or function. Notwithstanding, the executable code of an identified module need not be physically located together, but may include distinct instructions stored in different bits which, when logically combined, constitute the module and implement the specified Purpose.

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 multiple memory devices. Likewise, operational data may be identified within modules, and may be implemented 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 in different locations (including on different storage devices), and may exist, at least in part, only as electronic signals on a system or network.

When the module can be realized by software, considering the level of the existing hardware technology, the module that can be realized by software, regardless of the cost, those skilled in the art can build the corresponding hardware circuit to realize the corresponding function. The hardware circuit includes conventional very large scale integration (VLSI) circuits or gate arrays as well as existing semiconductors such as logic chips, transistors, 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, and the like.

What has been described above is a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications can also be made without departing from the principle of the present invention. These improvements and modifications should also be considered as Be the protection scope of the present invention.

Claims (20)

1. a kind of method of automatic repeating transmission note is it is characterised in that include：

Send note to network side, and wait the transmission report of network side feedback in preset time period；

During waiting, if releasing wireless link, after wireless link recovery, resend short Letter.

2. the method for claim 1 it is characterised in that described to network side send note, and The step sending report waiting network side feedback in preset time period includes：

After note is encapsulated as relay layer data signaling by note relay layer, then sealed by connection management sublayer Fill as key-course data signaling, be encapsulated as non-access layer information finally by Access Layer and send to network side；

Start the intervalometer of the relay layer correct response signaling waiting network side feedback by note relay layer.

3. the method for claim 1 it is characterised in that described wait during, if release Wireless link, then, after wireless link recovery, the step resending note includes：

During waiting, if meeting the pre-conditioned of wireless link release, discharged no by Access Layer Wired link, and whether real-time detection wireless link recover；

When testing result is to be, resend note.

4. method as claimed in claim 3 it is characterised in that described wait during, if meet It is pre-conditioned that wireless link discharges, then included by the step that Access Layer discharges wireless link：

During waiting, if the signal strength values of this cell are less than or equal to preset value, by accessing Layer release wireless link.

5. method as claimed in claim 4 it is characterised in that described during waiting, if this is little The signal strength values in area are less than or equal to preset value, then included by the step that Access Layer discharges wireless link：

During waiting, if the signal strength values of this cell are less than the signal intensity of adjacent system or adjacent cell Value, then report the measurement report of different system or alien frequencies by Access Layer to base station, so that described base station judgement weight Orientation；

The wireless heterogeneous networks Connection Release that described base station issues according to described measurement report is received by Access Layer Instruction, and release wireless link is instructed according to described wireless heterogeneous networks Connection Release.

6. method as claimed in claim 4 it is characterised in that described during waiting, if this is little The signal strength values in area are less than or equal to preset value, then included by the step that Access Layer discharges wireless link：

During waiting, if the signal strength values of this cell are equal to zero, it is automatically releasable by Access Layer Wireless link.

7. method as claimed in claim 3 is it is characterised in that whether described real-time detection wireless link is extensive Multiple step is specially：

Whether real-time detection searches the cell meeting condition resident success.

8. the method for claim 1 is it is characterised in that after releasing wireless link, no Before wired link is recovered, methods described also includes：

Stop waiting the transmission report of network side feedback.

9. method as claimed in claim 8 is it is characterised in that described stopping waits sending out of network side feedback The step of announcement of delivering newspaper includes：

Generate wireless link release by Access Layer to notify；

Notify the transmission report stopping waiting network side feedback by note relay layer according to the release of described wireless link Accuse.

10. the method for claim 1 it is characterised in that described after wireless link recovery, again The step sending note includes：

After wireless link recovery, wireless link recovery is generated by Access Layer and notifies；

Notify to resend note according to described wireless link recovery by note relay layer.

A kind of 11. terminals are it is characterised in that include：

SMS transmission module, for sending note to network side, and waits network side anti-in preset time period The transmission report of feedback；

Note retransmits module, for during waiting, if releasing wireless link, in wireless link After recovery, resend note.

12. terminals as claimed in claim 11 are it is characterised in that described SMS transmission module includes：

First process submodule, for note being encapsulated as after relay layer data signaling by note relay layer, Again key-course data signaling is encapsulated as by connection management sublayer, is encapsulated as Non-Access Stratum finally by Access Layer Message sends to network side；

Start submodule, for starting the correct response of relay layer waiting network side feedback by note relay layer The intervalometer of signaling.

13. terminals as claimed in claim 11 are it is characterised in that described note repeating transmission module includes：

Second processing submodule, for during waiting, if meeting the pre-conditioned of wireless link release, Then wireless link is discharged by Access Layer, and whether real-time detection wireless link recovers；

First repeating transmission submodule, for when testing result is to be, resending note.

14. terminals as claimed in claim 13 are it is characterised in that described second processing submodule includes：

3rd process submodule, for during waiting, if the signal strength values of this cell are less than or wait In preset value, then wireless link is discharged by Access Layer.

15. terminals as claimed in claim 14 are it is characterised in that described 3rd process submodule includes：

Report submodule, for during waiting, if the signal strength values of this cell be less than adjacent system or The signal strength values of adjacent cell, then report the measurement report of different system or alien frequencies by Access Layer to base station, with The judgement of described base station is made to redirect；

Receive release submodule, for receiving what described base station issued according to described measurement report by Access Layer Wireless heterogeneous networks Connection Release instructs, and wireless according to the instruction release of described wireless heterogeneous networks Connection Release Link.

16. terminals as claimed in claim 14 are it is characterised in that described 3rd process submodule includes：

It is automatically releasable submodule, for during waiting, if the signal strength values of this cell are equal to zero, Then wireless link is automatically releasable by Access Layer.

17. terminals as claimed in claim 13 are it is characterised in that described second processing submodule is specifically used In：

Whether real-time detection searches the cell meeting condition resident success.

18. terminals as claimed in claim 11 are it is characterised in that described note repeating transmission module is additionally operable to After releasing wireless link, before wireless link recovery, stop waiting the transmission report of network side feedback.

19. terminals as claimed in claim 18 are it is characterised in that described note repeating transmission module includes：

First generation submodule, notifies for generating wireless link release by Access Layer；

Stop submodule, for notifying to stop waiting net according to the release of described wireless link by note relay layer The transmission report of network side feedback.

20. terminals as claimed in claim 11 are it is characterised in that described note repeating transmission module includes：

Second generation submodule, for, after wireless link recovery, generating wireless link recovery by Access Layer Notify；

Second repeating transmission submodule, for notifying again to send out according to described wireless link recovery by note relay layer Send note.