WO2020073861A1

WO2020073861A1 - Radio link recovery method, terminal and secondary base station

Info

Publication number: WO2020073861A1
Application number: PCT/CN2019/109286
Authority: WO
Inventors: 岳然; 杨晓东
Original assignee: 维沃移动通信有限公司
Priority date: 2018-10-11
Filing date: 2019-09-30
Publication date: 2020-04-16
Also published as: CN111050419B; CN111050419A

Abstract

Provided by the present disclosure are a radio link recovery method, a terminal and a secondary base station. The radio link recovery method is applied to a terminal and comprises: sending a first message to a secondary base station, the first message being used to recover a radio link between a terminal and the secondary base station; receiving a radio link recovery message fed back by a network device; and carrying out radio link recovery according to the radio link recovery message.

Description

Wireless link recovery method, terminal and auxiliary base station

Cross-reference of related applications

This application claims the priority of Chinese Patent Application No. 201811184421.9 filed in China on October 11, 2018, the entire contents of which are hereby incorporated by reference.

Technical field

The present disclosure relates to the field of communication technologies, and in particular, to a wireless link recovery method, terminal, and secondary base station.

Background technique

A serving base station of a dual-connected user equipment (User Equipment, UE, also called terminal) has a master base station (Master Node, MN) and a secondary base station (Secondary Node, SN).

In the related art, the radio link is restored through a random access channel (Random Access Channel, RACH) process between the UE and the MN. On the one hand, the recovery is slower, on the other hand, the RACH process is used for connection reestablishment, and the RACH process is also It can be used to send scheduling requests, uplink and downlink data recovery, etc. From the perspective of the process and parameter allocation in the related art, it is impossible to distinguish different uses, so it cannot reflect the importance of link recovery.

Summary of the invention

Embodiments of the present disclosure provide a wireless link recovery method, terminal, and secondary base station to solve the problem of wireless link recovery in the related art, which cannot reflect the importance of link recovery and cannot guarantee the timeliness of communication.

In order to solve the above technical problems, the present disclosure adopts the following solutions:

In a first aspect, an embodiment of the present disclosure provides a wireless link recovery method, which is applied to a terminal and includes:

Sending a first message to the secondary base station, where the first message is used to restore the wireless link between the terminal and the primary base station;

Receive the wireless link recovery message fed back by the network equipment;

Perform wireless link recovery according to the wireless link recovery message.

In a second aspect, an embodiment of the present disclosure provides a wireless link recovery method, which is applied to a secondary base station and includes:

Receiving a first message sent by the terminal, where the first message is used to restore the wireless link between the terminal and the primary base station;

According to the first message, a wireless link recovery message is sent to the terminal.

In a third aspect, an embodiment of the present disclosure provides a terminal, including:

A first sending module, configured to send a first message to the secondary base station, where the first message is used to restore the wireless link between the terminal and the primary base station;

The first receiving module is used to receive the wireless link recovery message fed back by the network device;

The execution module is configured to perform wireless link recovery according to the wireless link recovery message.

According to a fourth aspect, an embodiment of the present disclosure provides a terminal, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, and when the computer program is executed by the processor, the above wireless The steps of the link recovery method.

According to a fifth aspect, an embodiment of the present disclosure provides a secondary base station, including:

A second receiving module, configured to receive a first message sent by the terminal, where the first message is used to restore the wireless link between the terminal and the primary base station;

The second sending module is configured to send a wireless link recovery message to the terminal according to the first message.

According to a sixth aspect, an embodiment of the present disclosure provides a secondary base station, including: a memory, a processor, and a computer program stored on the memory and executable on the processor. The computer program is executed by the processor to implement the foregoing Steps of wireless link recovery method.

According to a seventh aspect, an embodiment of the present disclosure provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and the computer program is executed by a processor to implement the above-mentioned wireless link recovery method step.

The beneficial effects of this disclosure are:

In the above solution, by sending a first message for restoring the wireless link between the terminal and the primary base station to the secondary base station when a wireless link fails with the MN, the restoration of the link can be completed as quickly as possible, and the network can be guaranteed Timeliness of communication.

BRIEF DESCRIPTION

In order to more clearly explain the technical solutions of the embodiments of the present disclosure, the drawings required for the description of the embodiments of the present disclosure will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present disclosure, For a person of ordinary skill in the art, without paying any creative work, other drawings can also be obtained based on these drawings.

Figure 1 shows the working process diagram of T310 and T311 in RLM and RLF functions;

FIG. 2 shows a schematic flowchart of a wireless link recovery method applied to a terminal according to an embodiment of the present disclosure;

FIG. 3 shows a schematic flowchart of a wireless link recovery method applied to a secondary base station according to an embodiment of the present disclosure;

4 shows a schematic block diagram of a terminal according to an embodiment of the present disclosure;

FIG. 5 shows a structural block diagram of a terminal according to an embodiment of the present disclosure;

6 is a schematic block diagram of a secondary base station according to an embodiment of the present disclosure;

7 is a structural block diagram of a secondary base station according to an embodiment of the present disclosure.

detailed description

To make the objectives, technical solutions, and advantages of the disclosure more clear, the disclosure will be described in detail in conjunction with the drawings and specific embodiments below.

In the description of the embodiments of the present disclosure, first, some concepts used in the following description will be explained.

Dual connectivity is a technology introduced in Long Term Evolution (LTE) and will also be used in New Radio (NR). It means that the UE can be connected to two base stations at the same time, and the two base stations provide data transmission and reception services for the UE at the same time. Since the radio resources of two base stations can be used at the same time, the service data transmission rate of the UE is doubled.

There is a signaling interface between two base stations serving the same UE, which can communicate configuration information of related UEs.

The serving base station of a dual-connected UE may belong to the same access network standard (RAT), for example: two LTE eNBs, or two NR gNBs; it may also belong to different RATs, for example, an LTE eNB and an NR gNB. The present disclosure can be applied to any type of dual connection base station, and the type of the dual connection base station is not limited.

Among the serving base stations of the dual-connected UE, one is a master base station (Master Node, MN) and one is a secondary base station (Secondary Node, SN). Among them, each base station can support carrier aggregation (Carrier Aggregation, CA) technology. The network will configure two special cells for dual-connected UEs, that is, configure one serving cell of MN as the primary serving cell of the UE (Primary Cell, PCell), and configure one serving cell of SN as the primary and secondary serving cell (Primary) Cell, PSCell). The other cells serving the UE of the MN and the SN are the secondary serving cells (Secondary Cell, SCell) of the UE.

Multi-connection refers to more than two base stations serving the same UE. The present disclosure is also applicable to multiple connections, and does not limit the types of multiple connection base stations.

Similar to dual connectivity, one of the serving base stations of a multi-connected UE is an MN or a master serving cell group (MCG), and the other is an SN or a secondary serving cell group (SCG). Among them, each base station can support CA.

The network will configure multiple special cells for multiple connected UEs, that is, one serving cell of the MN is configured as the PCell of the UE, and one PScell of each serving cell of each SN is configured. The other cells of the MN and SN serving the UE are the Scell of the UE.

In LTE and NR systems, the UE has a radio link monitoring (RadioLink Monitor, RLM) function. After determining that the radio link fails (RadioLink Failure, RLF), the UE performs the corresponding link recovery procedure. RLM and RLF are only implemented on PCell and PScell.

1. RLM and RLF on PCell

In the RLM function of LTE, the UE measures the signal-to-noise ratio (Signal to Interference Plus Noise, Ratio, SINR) of the cell reference signal (CRS) corresponding to the PCell physical downlink control channel (Physical Downlink Control CHannel, PDCCH). Realize monitoring of wireless links. When the UE physical layer (L1) measures that the SINR of the CRS corresponding to the PDCCH of the PCell is below a certain threshold, it is determined that the radio link is out of sync ("out-of-sync"); the physical layer notifies the higher layer (Radio Resource Control (RRC) Layer, L3) An out-of-sync indication. If the RRC layer has N310 consecutive out-of-sync indications, the UE RRC layer starts a timer (Timer) T310.

If the CRS corresponding to the measured PCell PDCCH is higher than a certain threshold, the wireless link synchronization ("in-sync") is considered. The physical layer notifies the higher layer (RRC layer) of an in-sync indication. If the RRC layer has N311 consecutive in-sync indications, the UE stops the operation of Timer T310.

If the timer T310 runs out, the UE determines the RLF; and starts the timer T311. During the operation of the T311, the UE will try to find a suitable cell for RRC connection reestablishment. Before the reconstruction is successful, the transmission and reception of user plane data between the UE and the network will be interrupted.

If the UE is not successfully reestablished before T311 times out, the UE changes from the RRC connected state (RRC_CONNECTED) to the RRC idle state (RRC_IDLE).

The working process of T310 and T311 is shown in Figure 1.

The duration of N310, N311, T310 and T311 is configured by the network.

2. RLM and RLF on PSCell

In the RLM function of LTE, the UE monitors the wireless link by measuring the SINR of the CRS corresponding to the PSCell and PDCCH. When the UE physical layer (L1) measures that the SINR of the CRS reference signal corresponding to the PDCCH of the PSCell is below a certain threshold, the radio link is considered "out-of-sync"; the physical layer notifies the higher layer (RRC layer, L3) of an out-of-sync of-sync indication, if the RRC layer has N313 consecutive out-of-sync indications, the UE RRC layer starts a Timer T313.

If the CRS reference signal corresponding to the measured PSCell PDCCH is higher than a certain threshold, the wireless link is deemed "in-sync". Then the physical layer notifies the higher layer (RRC layer) of an in-sync indication. If the RRC layer has N314 consecutive in-sync indications, the UE stops the operation of Timer T313.

If the timer T313 has timed out, the UE determines that the SCG radio link has failed (SCG-RLF); it stops sending and receiving data on the SN and reports the SCG-RLF to the network.

The duration of N313, N314 and T313 is configured by the network.

It should be noted that NR's RLM and RLF processing flow is similar to LTE. For example, the name of the counter / timer used may be different, and the type of measurement signal will be different. In related technologies, 3GPP has agreed that the reference signal for RLM in NR is different from LTE, and will use the channel state information reference signal (Channel-State Information-Reference Signal, CSI-RS) and / or synchronization signal block (Synchronization Signal) Block, SSB) does RLM for the reference signal. SSB and CSI-RS are two reference signals of NR.

Radio Resource Control (RRC) connection reestablishment

When there is a problem with the communication between the UE and the network, the UE needs to initiate the RRC connection reestablishment process. The RRC connection reestablishment process is used to restore the signaling connection between the network and the UE, that is, the signaling radio bearer one (SRB1).

Problems with communication between the UE and the network include the following:

A1. A wireless link failure occurs between the UE and the MN (for example: the UE detects that the downlink wireless link quality of the network is lower than the preset threshold; the UE MAC layer random access channel (Random Access Channel, RACH) attempts reach the maximum Unsuccessful; UE radio link control (Radio Link Control, RLC) layer AM mode retransmitted to the maximum number of times, etc.);

A2. The UE fails to switch;

A3. The UE finds that the signaling transmitted by SRB1 or SRB2 fails to protect the integrity;

A4. The UE finds that it cannot execute the RRC reconfiguration command sent by the network (for example, the value of the parameter after reconfiguration exceeds the hardware capability of the UE).

The present disclosure provides a wireless link recovery method, terminal, and secondary base station for the problem of wireless link recovery methods in the related art that cannot reflect the importance of link recovery and cannot guarantee the timeliness of communication.

As shown in FIG. 2, an embodiment of the present disclosure provides a wireless link recovery method, which is applied to a terminal and includes:

Step 201: Send a first message to the secondary base station;

It should be noted that the first message is used to restore the wireless link between the terminal and the main base station, and it may be a message involved in the random access process or a message other than the random access process .

Step 202: Receive a wireless link recovery message fed back by a network device;

It should be noted that the network device may be a secondary base station or a primary base station; the wireless link recovery message may be any downlink message, or a downlink message that the terminal expects but fails to receive.

For example, the wireless link recovery message is an RRC reconfiguration message, or an RRC connection establishment message, or an RRC connection recovery message.

Step 203: Perform wireless link recovery according to the wireless link recovery message;

It should be noted that when the secondary base station receives the first message sent by the terminal and determines that the terminal needs to restore the wireless link between the terminal and the primary base station, it needs to feed back a corresponding message to the terminal. After the message, the wireless link can be restored.

The specific implementation of the embodiments of the present disclosure is described in detail below.

1. The terminal uses the random access process instruction to perform wireless link recovery

In this case, a random access trigger reason is newly added in the embodiment of the present disclosure, and the terminal may use the random access message one (Msg1) and / or message three (Msg3) to indicate the restoration of the wireless link.

1. When using message one, specifically, the implementation of step 201 is:

When it is determined that there is a first trigger reason for random access, trigger a random access process and send a random access message 1 to the secondary base station;

Wherein, the first triggering reason is: a wireless link failure occurs between the terminal and the primary base station, and no wireless link failure occurs between the terminal and the secondary base station.

It should be noted that in this case, as long as the terminal judges that a wireless link failure has occurred with the primary base station and no wireless link failure has occurred between the terminal and the secondary base station, the random access process will be triggered, and Step 1 of sending random access message.

It should also be noted that since message 1 carries a preamble, the higher the transmission power of the preamble, the higher the transmission success rate. Optionally, the terminal can adjust the transmission power according to the first power climb step, and apply the adjusted Send power to send message one to the secondary base station.

It should be noted that when the terminal sends the message 1, the transmission power will consider the influence of the product of the number of retransmissions and the first power climb step, that is, if the terminal fails to receive the feedback message of the secondary base station after sending the message 1, Random access response message), the terminal will retransmit the message one. In this case, the terminal can use the first power climb step to adjust the transmission power, and use the adjusted transmission power to retransmit the message one .

It should also be noted that, in order to increase the success rate of sending message 1, the first power climb step may be implemented in one of the following ways:

A11. The first power climbing step is greater than or equal to the first preset threshold;

That is, in this case, a larger power climb step is used to adjust the transmission power.

A12. The priority of the first power climbing step is the configured high priority power climbing step;

That is, in this case, priority is given to the use of high-priority power climb steps to adjust the transmission power.

It should be noted that the first power climb step is usually configured by a network device for the terminal, and the network device can be a secondary base station or a primary base station; under normal circumstances, the first power climb step is by the main base station as the terminal Configuration; or when the primary base station does not configure the first power climb step for the terminal, the secondary base station configures the first power climb step for the terminal; or after the primary base station configures the first power climb step for the terminal, by The secondary base station reconfigures / reconfigures the first power climb step size for the terminal.

In addition, the secondary base station side can also allocate larger power to the uplink transmission, for example, specify a larger "TPC command for scheduled PUSCH in the uplink grant (UL grant) of the random access response (RAR) message fed back to the terminal. "To achieve the purpose of quickly restoring the link; the network side can also use the random access response message to feed back a smaller backoff indicator (BI) to achieve the purpose of quickly restoring the link.

2. When using message one and / or message three, specifically, step 201 is implemented using at least one of the following ways:

A21. When there is at least one trigger reason for the random access process, perform a random access process for restoring the wireless link, and send message one to the secondary base station;

It should be noted that the trigger cause of the at least one random access process includes at least: the first trigger cause of the wireless link failure between the terminal and the primary base station, and no wireless link failure between the terminal and the secondary base station ; Because only one kind of random access can be performed at the same time, when there are multiple triggering causes of the random access process, the random access process for restoring the wireless link is preferentially executed, and message 1 is sent to the secondary base station.

A22. When there is at least one triggering cause of the random access process, perform a random access process for restoring the wireless link, preferentially assemble uplink messages related to link restoration in message three, and send the message three To the secondary base station;

It should be noted that when there are multiple triggering reasons for the random access process, when the random access message three is sent, the uplink message related to link recovery is preferentially assembled in the message three, so that the wireless link The secondary base station is informed of the failure of the path, and the link is restored as quickly as possible. It should also be noted here that in addition to assembling the uplink message related to link recovery in this message three, it does not exclude that the message three carries an uplink message that causes other random access process triggers.

It should also be noted that, in order to clearly identify the type of random access, in the above implementation of step 201, the message sent by the terminal may also carry a first preamble. Optionally, the first preamble The code is used to indicate wireless link recovery, that is, the first preamble is a dedicated preamble for wireless link recovery in this implementation; optionally, the first preamble is a high-priority preamble, which is In the random access process, the preamble with a higher priority is used, and the secondary base station can process the random access process with priority when acquiring the preamble with a higher priority, so as to realize link recovery as soon as possible.

It should be noted that the first preamble may be agreed by a protocol, or the first preamble may be configured by a network device. Specifically, the network device may be a secondary base station or a primary base station, that is, the first preamble The code can be configured by the primary base station for the terminal or the secondary base station for the terminal.

2. The first message uses dedicated resources

Specifically, in this case, the dedicated resource is used to indicate that the wireless link between the terminal and the primary base station needs to be restored.

It should be noted that before the terminal uses the dedicated resource, it also needs to receive configuration information sent by the network device, and the configuration information instructs the terminal to configure the dedicated resource. Specifically, the network device may be a secondary base station or a primary base station, that is, the configuration information may be configured by the primary base station for the terminal, or may be configured by the secondary base station for the terminal.

Further, once the secondary base station receives the information sent by the terminal through the dedicated resource, it means that the terminal wants to quickly restore the wireless link with the primary base station, and the network side (for example, the primary base station on the network side, or the secondary base station) can make a response Response, for example, sending an RRC reconfiguration message, or RRC connection reestablishment, or RRC connection recovery message, etc., the terminal that receives the above response message may consider the link restored.

3. The first message is a dedicated message or an extended second message

It should be noted that in this implementation, a new message can be defined as a dedicated message used for link restoration; the terminal sends to the secondary base station through uplink resources to request to restore the link. The network side (for example , The primary base station on the network side, or a secondary base station) can respond accordingly, for example, send an RRC reconfiguration message, or an RRC connection reestablishment, or an RRC connection recovery message. restore.

In this implementation, the existing message (that is, the second message mentioned above) can also be extended to give it a new function. The terminal sends it to the secondary base station through uplink resources to request to restore the link. The network The side can respond accordingly, for example, send an RRC reconfiguration message, or an RRC connection reestablishment, or an RRC connection recovery message, etc. The terminal that receives the above response message may consider the link restored.

It should be noted that the embodiments of the present disclosure can be applied to 4G and subsequent evolution systems.

In the embodiment of the present disclosure, when a wireless link failure between the terminal and the MN occurs, the link recovery is guaranteed to be completed as quickly as possible, and the timeliness of the network communication can be ensured.

Specifically, as shown in FIG. 3, FIG. 3 is a schematic flowchart of a wireless link recovery method according to an embodiment of the present disclosure. The wireless link recovery method, which is applied to a secondary base station, includes:

Step 301: Receive a first message sent by a terminal, where the first message is used to restore the wireless link between the terminal and the primary base station;

Step 302: Send a wireless link restoration message to the terminal according to the first message.

Optionally, the first message is message one, and the first message sent by the receiving terminal includes:

Receive the message sent by the terminal one;

Wherein, the first message is that the terminal triggers the random access process and sends it to the secondary base station when it determines that there is a first trigger reason for random access;

The first triggering reason is that a wireless link failure occurs between the terminal and the primary base station, and no wireless link failure occurs between the terminal and the secondary base station.

Further, the first message sent by the receiving terminal includes:

The receiving terminal adjusts the transmission power according to the first power climbing step, and applies the adjusted transmission power to send the message one.

Specifically, the first power climb step is greater than or equal to a first preset threshold, or the priority of the first power climb step is the configured high priority power climb step.

Optionally, the first message is message one and / or message three, and the first message sent by the receiving terminal includes:

The receiving terminal executes the random access procedure for restoring the wireless link when there is at least one triggering cause of the random access procedure, and the message 1 sent; and / or

When there is at least one cause of triggering the random access process, the receiving terminal performs a random access process for restoring the wireless link, and sends a message three, in which the uplink message related to link restoration is preferentially assembled in the message three;

Wherein, the at least one triggering cause of the random access process at least includes: a first triggering cause that a wireless link failure occurs between the terminal and the primary base station, and no wireless link failure occurs between the terminal and the secondary base station.

Further, the first preamble is carried in the message one;

Wherein, the first preamble is a high priority preamble, or

The first preamble is used to instruct to perform wireless link recovery.

Optionally, when the primary base station does not configure the first preamble for the terminal, before receiving the message one sent by the terminal, the method further includes:

Configure the first preamble to the terminal.

Optionally, the first message uses dedicated resources, and the dedicated resources are used to indicate that the wireless link between the terminal and the primary base station needs to be restored.

Further, before the first message sent by the receiving terminal, the method further includes:

Sending configuration information to the terminal;

Wherein, the configuration information indicates that dedicated resources are configured.

Optionally, the first message is a dedicated message or an extended second message, and the first message is used to request wireless link recovery.

It should be noted that all the descriptions about the secondary base station in the above embodiments are applicable to the embodiment of the wireless link recovery method, and the same technical effect can be achieved.

As shown in FIG. 4, an embodiment of the present disclosure provides a terminal 400, including:

The first sending module 401 is used to send a first message to the secondary base station, where the first message is used to restore the wireless link between the terminal and the primary base station;

The first receiving module 402 is configured to receive a wireless link recovery message fed back by a network device;

The execution module 403 is configured to perform wireless link recovery according to the wireless link recovery message.

Optionally, the first message is message one, and the first sending module 401 is configured to:

Further, the method for sending the random access message one to the secondary base station is:

Adjust the transmission power according to the first power climb step, and apply the adjusted transmission power to send message one to the secondary base station.

Optionally, the first message is message one and / or message three, and the first sending module is configured to:

When there is at least one trigger reason for the random access procedure, perform a random access procedure for restoring the wireless link, and send message one to the secondary base station; and / or

When there is at least one trigger reason for the random access process, the random access process for restoring the wireless link is performed, and the uplink message related to link restoration is preferentially assembled in message three, and the message three is sent to all Describe the secondary base station;

Specifically, the first preamble is carried in the message one;

Wherein, the first preamble is a high priority preamble, or

The first preamble is used to instruct to perform wireless link recovery.

Further, the first preamble is configured by a network device or agreed by a protocol.

Further, the terminal also includes:

Configuration receiving module, used to receive configuration information sent by network equipment;

Wherein, the configuration information instructs the terminal to configure dedicated resources.

It should be noted that the terminal embodiment is a terminal corresponding to the above-mentioned wireless link recovery method applied to the terminal. All implementations of the above embodiment are applicable to the terminal embodiment, and the same technical effect can be achieved .

FIG. 5 is a schematic diagram of a hardware structure of a terminal for implementing an embodiment of the present disclosure.

The terminal 50 includes but is not limited to: a radio frequency unit 510, a network module 520, an audio output unit 530, an input unit 540, a sensor 550, a display unit 560, a user input unit 570, an interface unit 580, a memory 590, a processor 511, and a power supply 512 and other components. A person skilled in the art may understand that the terminal structure shown in FIG. 5 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than those shown, or combine some components, or arrange different components. In the embodiments of the present disclosure, the terminal includes but is not limited to a mobile phone, a tablet computer, a notebook computer, a palmtop computer, an in-vehicle terminal, a wearable device, and a pedometer.

The radio frequency unit 510 is used to send a first message to the secondary base station, where the first message is used to restore the wireless link between the terminal and the primary base station; receive a wireless link restoration message fed back by the network device; according to the Wireless link recovery message to perform wireless link recovery.

The terminal of the embodiment of the present disclosure sends a first message for restoring the wireless link between the terminal and the primary base station to the secondary base station when a wireless link failure with the MN occurs, to ensure that the link recovery is completed as quickly as possible, Can guarantee the timeliness of network communication.

It should be understood that, in the embodiment of the present disclosure, the radio frequency unit 510 may be used to receive and send signals during sending and receiving information or during a call. Specifically, after receiving the downlink data from the network device, it is processed by the processor 511; Send the upstream data to the network device. Generally, the radio frequency unit 510 includes but is not limited to an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 510 can also communicate with the network and other devices through a wireless communication system.

The terminal provides wireless broadband Internet access for the user through the network module 520, such as helping the user to send and receive e-mail, browse the web, and access streaming media.

The audio output unit 530 may convert the audio data received by the radio frequency unit 510 or the network module 520 or stored in the memory 590 into an audio signal and output as sound. Moreover, the audio output unit 530 may also provide audio output related to a specific function performed by the terminal 50 (eg, call signal reception sound, message reception sound, etc.). The audio output unit 530 includes a speaker, a buzzer, a receiver, and the like.

The input unit 540 is used to receive audio or video signals. The input unit 540 may include a graphics processor (Graphics, Processing, Unit, GPU) 541 and a microphone 542. The graphics processor 541 pairs images of still pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode The data is processed. The processed image frame may be displayed on the display unit 560. The image frame processed by the graphics processor 541 may be stored in the memory 590 (or other storage medium) or sent via the radio frequency unit 510 or the network module 520. The microphone 542 can receive sound, and can process such sound into audio data. The processed audio data can be converted into a format that can be sent to the mobile communication network device via the radio frequency unit 510 in the case of the telephone call mode and output.

The terminal 50 also includes at least one sensor 550, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 561 according to the brightness of the ambient light, and the proximity sensor can close the display panel 561 and / or when the terminal 50 moves to the ear Or backlight. As a type of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in various directions (generally three axes), and can detect the magnitude and direction of gravity when at rest, and can be used to recognize the posture of the terminal (such as horizontal and vertical screen switching, related games, Magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tap), etc .; sensor 550 can also include fingerprint sensor, pressure sensor, iris sensor, molecular sensor, gyroscope, barometer, hygrometer, thermometer, infrared Sensors, etc., will not be repeated here.

The display unit 560 is used to display information input by the user or information provided to the user. The display unit 560 may include a display panel 561, and the display panel 561 may be configured in the form of a liquid crystal display (Liquid Crystal (Display), LCD), an organic light emitting diode (Organic Light-Emitting Diode, OLED), or the like.

The user input unit 570 may be used to receive input numeric or character information, and generate key signal input related to user settings and function control of the terminal. Specifically, the user input unit 570 includes a touch panel 571 and other input devices 572. The touch panel 571, also known as a touch screen, can collect the user's touch operations on or near it (for example, the user uses any suitable objects or accessories such as fingers, stylus, etc. on or near the touch panel 571 operating). The touch panel 571 may include a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, and detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device and converts it into contact coordinates, and then sends To the processor 511, the command sent from the processor 511 is received and executed. In addition, the touch panel 571 may be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves. In addition to the touch panel 571, the user input unit 570 may also include other input devices 572. Specifically, other input devices 572 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which are not repeated here.

Further, the touch panel 571 may be overlaid on the display panel 561. When the touch panel 571 detects a touch operation on or near it, it is transmitted to the processor 511 to determine the type of touch event, and then the processor 511 according to the touch The type of event provides a corresponding visual output on the display panel 561. Although in FIG. 5, the touch panel 571 and the display panel 561 are implemented as two independent components to realize the input and output functions of the terminal, in some embodiments, the touch panel 571 and the display panel 561 may be integrated and The input and output functions of the terminal are implemented, which is not limited here.

The interface unit 580 is an interface for connecting an external device to the terminal 50. For example, the external device may include a wired or wireless headset port, an external power (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, audio input / output (I / O) port, video I / O port, headphone port, etc. The interface unit 580 may be used to receive input (eg, data information, power, etc.) from an external device and transmit the received input to one or more elements within the terminal 50 or may be used between the terminal 50 and the external device Transfer data between.

The memory 590 may be used to store software programs and various data. The memory 590 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, application programs required by at least one function (such as a sound playback function, an image playback function, etc.), etc .; the storage data area may store Data created by the use of mobile phones (such as audio data, phonebooks, etc.), etc. In addition, the memory 590 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.

The processor 511 is the control center of the terminal, and uses various interfaces and lines to connect the various parts of the entire terminal, executes or executes the software programs and / or modules stored in the memory 590, and calls the data stored in the memory 590 to execute Various functions and processing data of the terminal, so as to monitor the terminal as a whole. The processor 511 may include one or more processing units; optionally, the processor 511 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, and application programs, etc. The modulation processor mainly handles wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 511.

The terminal 50 may also include a power supply 512 (such as a battery) that supplies power to various components. Optionally, the power supply 512 may be logically connected to the processor 511 through a power management system, so as to implement management of charging, discharging, and power consumption management through the power management system And other functions.

In addition, the terminal 50 includes some unillustrated functional modules, which will not be repeated here.

Optionally, an embodiment of the present disclosure further provides a terminal, including a processor 511, a memory 590, and a computer program stored on the memory 590 and executable on the processor 511, when the computer program is executed by the processor 511 Each process of the embodiment of the wireless link recovery method applied to the terminal side is implemented, and the same technical effect can be achieved. To avoid repetition, details are not described here.

Embodiments of the present disclosure also provide a computer-readable storage medium that stores a computer program on the computer-readable storage medium. When the computer program is executed by a processor, each process of the wireless link recovery method embodiment applied to the terminal side is implemented. And can achieve the same technical effect, in order to avoid repetition, no more details here. Wherein, the computer-readable storage medium, such as read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.

As shown in FIG. 6, an embodiment of the present disclosure also provides a secondary base station 600, including:

The second receiving module 601 is configured to receive the first message sent by the terminal, where the first message is used to restore the wireless link between the terminal and the primary base station;

The second sending module 602 is configured to send a wireless link restoration message to the terminal according to the first message.

Optionally, the first message is message one, and the second receiving module 601 is configured to:

Receive the message sent by the terminal one;

Further, the implementation manner of the message one sent by the receiving terminal is:

Optionally, the first message is message one and / or message three, and the second receiving module 601 is configured to:

When there is at least one cause of triggering the random access process, the receiving terminal performs a random access process for recovering the wireless link, and sends a message three, in which the uplink message related to link recovery is preferentially assembled in the message three;

Further, the first preamble is carried in the message one;

Wherein, the first preamble is a high priority preamble, or

The first preamble is used to instruct to perform wireless link recovery.

Further, the terminal also includes:

The configuration module is configured to configure the first preamble to the terminal.

Further, the terminal also includes:

A third sending module, configured to send configuration information to the terminal;

It should be noted that the embodiment of the secondary base station is a secondary base station corresponding to the foregoing wireless link recovery method applied to the secondary base station. All implementations of the foregoing embodiment are applicable to the embodiment of the secondary base station and can also be achieved The same technical effect.

An embodiment of the present disclosure also provides a secondary base station, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, and when the computer program is executed by the processor, the computer is applied to the secondary base station The various processes in the embodiment of the wireless link recovery method can achieve the same technical effect. To avoid repetition, they will not be described here.

An embodiment of the present disclosure also provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, a wireless link recovery method applied to a secondary base station is implemented Each process in the example can achieve the same technical effect. To avoid repetition, it will not be repeated here. Wherein, the computer-readable storage medium, such as read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc.

7 is a structural diagram of a secondary base station according to an embodiment of the present disclosure, which can implement the details of the above wireless link recovery method and achieve the same effect. As shown in FIG. 7, the network device 700 includes: a processor 701, a transceiver 702, a memory 703, and a bus interface, where:

The processor 701 is used to read the program in the memory 703 and perform the following processes:

Receiving a first message sent by the terminal through the transceiver 702, where the first message is used to restore the wireless link between the terminal and the primary base station;

In FIG. 7, the bus architecture may include any number of interconnected buses and bridges, specifically, one or more processors represented by the processor 701 and various circuits of the memory represented by the memory 703 are linked together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, etc., which are well known in the art, and therefore, they will not be further described in this article. The bus interface provides an interface. The transceiver 702 may be a plurality of elements, including a transmitter and a receiver, and provides a unit for communicating with various other devices on a transmission medium.

The processor 701 is responsible for managing the bus architecture and general processing, and the memory 703 may store data used by the processor 701 when performing operations.

Optionally, the first message is message one, and the processor 701 is used to read the program in the memory 703 and perform the following process:

Receive message one sent by the terminal through the transceiver 702;

Further, the processor 701 is configured to read the program in the memory 703 and perform the following process:

Optionally, the first message is message one and / or message three, and the processor 701 is configured to read the program in the memory 703 and perform the following process:

Specifically, the first preamble is carried in the message one;

Wherein, the first preamble is a high priority preamble, or

The first preamble is used to instruct to perform wireless link recovery.

Configure the first preamble to the terminal.

Sending configuration information to the terminal through the transceiver 702;

Among them, the secondary base station may be a global mobile communication (Global System of Mobile Communication, GSM) or a base station (Base Transceiver Station, BTS) in Code Division Multiple Access (CDMA), or a broadband code division multiple access (Wideband Code Division Multiple Access, WCDMA) base station (NodeB, NB), it can also be an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a future 5G network The base station and the like are not limited here.

The above is an optional embodiment of the present disclosure. It should be noted that for those of ordinary skill in the art, a number of improvements and retouches can be made without departing from the principles described in the present disclosure. These improvements and retouches also Within the protection scope of the present disclosure.

Claims

A wireless link recovery method, applied to a terminal, includes:

Sending a first message to the secondary base station, where the first message is used to restore the wireless link between the terminal and the primary base station;

Receive the wireless link recovery message fed back by the network equipment;

Perform wireless link recovery according to the wireless link recovery message.
The wireless link recovery method according to claim 1, wherein the first message is message one, and the sending the first message to the secondary base station includes:

When it is determined that there is a first trigger reason for random access, trigger a random access process and send a random access message 1 to the secondary base station;

Wherein, the first triggering reason is: a wireless link failure occurs between the terminal and the primary base station, and no wireless link failure occurs between the terminal and the secondary base station.
The wireless link recovery method according to claim 2, wherein the sending of the random access message to the secondary base station includes:

Adjust the transmission power according to the first power climb step, and apply the adjusted transmission power to send message one to the secondary base station.
The wireless link recovery method according to claim 3, wherein the first power climb step is greater than or equal to a first preset threshold, or the priority of the first power climb step is the configured high Priority power climb step.
The wireless link recovery method according to claim 1, wherein the first message is message one and / or message three, and the sending the first message to the secondary base station includes:

When there is at least one trigger reason for the random access procedure, perform a random access procedure for restoring the wireless link, and send message one to the secondary base station; and / or

When there is at least one trigger reason for the random access process, the random access process for restoring the wireless link is performed, and the uplink message related to link restoration is preferentially assembled in message three, and the message three is sent to all Describe the secondary base station;

Wherein, the at least one triggering cause of the random access process at least includes: a first triggering cause that a wireless link failure occurs between the terminal and the primary base station, and no wireless link failure occurs between the terminal and the secondary base station.
The wireless link recovery method according to claim 2 or 5, wherein the first preamble is carried in the message one;

Wherein, the first preamble is a high priority preamble, or

The first preamble is used to instruct to perform wireless link recovery.
The wireless link recovery method according to claim 6, wherein the first preamble is configured by a network device or agreed by a protocol.
The wireless link recovery method according to claim 1, wherein the first message uses dedicated resources, and the dedicated resources are used to indicate that wireless link recovery between the terminal and the primary base station is required.
The wireless link recovery method according to claim 8, wherein before the sending the first message to the secondary base station, the method further comprises:

Receive configuration information sent by network equipment;

Wherein, the configuration information instructs the terminal to configure dedicated resources.
The wireless link recovery method according to claim 1, wherein the first message is a dedicated message or an extended second message, and the first message is used to request wireless link recovery.
A wireless link recovery method, applied to a secondary base station, includes:

Receiving a first message sent by the terminal, where the first message is used to restore the wireless link between the terminal and the primary base station;

According to the first message, a wireless link recovery message is sent to the terminal.
The wireless link recovery method according to claim 11, wherein the first message is message one, and the first message sent by the receiving terminal includes:

Receive the message sent by the terminal one;

Wherein, the first message is that the terminal triggers the random access process and sends it to the secondary base station when it determines that there is a first trigger reason for random access;

The first triggering reason is that a wireless link failure occurs between the terminal and the primary base station, and no wireless link failure occurs between the terminal and the secondary base station.
The wireless link recovery method according to claim 12, wherein the message one sent by the receiving terminal includes:

The receiving terminal adjusts the transmission power according to the first power climb step, and applies the adjusted transmission power to send the message one.
The wireless link recovery method according to claim 13, wherein the first power climb step is greater than or equal to a first preset threshold, or the priority of the first power climb step is the configured high Priority power climb step.
The wireless link recovery method according to claim 11, wherein the first message is message one and / or message three, and the first message sent by the receiving terminal includes:

The receiving terminal executes the random access procedure for restoring the wireless link when there is at least one triggering cause of the random access procedure, and the message 1 sent; and / or

When there is at least one cause of triggering the random access process, the receiving terminal performs a random access process for restoring the wireless link, and sends a message three, in which the uplink message related to link restoration is preferentially assembled in the message three;

Wherein, the at least one triggering cause of the random access process at least includes: a first triggering cause that a wireless link failure occurs between the terminal and the primary base station, and no wireless link failure occurs between the terminal and the secondary base station.
The wireless link recovery method according to claim 12 or 15, wherein the first preamble is carried in the message one;

Wherein, the first preamble is a high priority preamble, or

The first preamble is used to instruct to perform wireless link recovery.
The wireless link recovery method according to claim 16, wherein before receiving the message one sent by the terminal, further comprising:

Configure the first preamble to the terminal.
The wireless link recovery method according to claim 11, wherein the first message uses dedicated resources, and the dedicated resources are used to indicate that wireless link recovery between the terminal and the primary base station is required.
The wireless link recovery method according to claim 18, wherein before the first message sent by the receiving terminal, further comprising:

Sending configuration information to the terminal;

Wherein, the configuration information indicates that dedicated resources are configured.
The wireless link recovery method according to claim 11, wherein the first message is a dedicated message or an extended second message, and the first message is used to request wireless link recovery.
A terminal, including:

A first sending module, configured to send a first message to the secondary base station, where the first message is used to restore the wireless link between the terminal and the primary base station;

The first receiving module is used to receive the wireless link recovery message fed back by the network device;

The execution module is configured to perform wireless link recovery according to the wireless link recovery message.
The terminal according to claim 21, wherein the first message is message one, and the first sending module is configured to:

When it is determined that there is a first trigger reason for random access, trigger a random access process and send a random access message 1 to the secondary base station;

Wherein, the first triggering reason is: a wireless link failure occurs between the terminal and the primary base station, and no wireless link failure occurs between the terminal and the secondary base station.
The terminal according to claim 21, wherein the first message is message one and / or message three, and the first sending module is configured to:

When there is at least one trigger reason for the random access procedure, perform a random access procedure for restoring the wireless link, and send message one to the secondary base station; and / or

When there is at least one trigger reason for the random access process, the random access process for restoring the wireless link is performed, and the uplink message related to link restoration is preferentially assembled in message three, and the message three is sent to all Describe the secondary base station;

Wherein, the at least one triggering cause of the random access process at least includes: a first triggering cause that a wireless link failure occurs between the terminal and the primary base station, and no wireless link failure occurs between the terminal and the secondary base station.
The terminal according to claim 21, wherein the first message uses dedicated resources, and the dedicated resources are used to indicate that wireless link recovery between the terminal and the primary base station is required.
The terminal according to claim 24, further comprising:

Configuration receiving module, used to receive configuration information sent by network equipment;

Wherein, the configuration information instructs the terminal to configure dedicated resources.
The terminal according to claim 21, wherein the first message is a dedicated message or an extended second message, and the first message is used to request wireless link restoration.
A terminal, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, the computer program being implemented by the processor as described in any one of claims 1 to 10. The steps of the wireless link recovery method.
A secondary base station, including:

A second receiving module, configured to receive a first message sent by the terminal, where the first message is used to restore the wireless link between the terminal and the primary base station;

The second sending module is configured to send a wireless link recovery message to the terminal according to the first message.
A secondary base station, comprising: a memory, a processor, and a computer program stored on the memory and runable on the processor, the computer program being executed by the processor as implemented in any one of claims 11 to 20 The steps of the wireless link recovery method described above.
A computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, wireless link recovery according to any one of claims 1 to 20 is realized Method steps.