CN111050419A - Wireless link recovery method, terminal and secondary base station - Google Patents
Wireless link recovery method, terminal and secondary base station Download PDFInfo
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- CN111050419A CN111050419A CN201811184421.9A CN201811184421A CN111050419A CN 111050419 A CN111050419 A CN 111050419A CN 201811184421 A CN201811184421 A CN 201811184421A CN 111050419 A CN111050419 A CN 111050419A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/18—Management of setup rejection or failure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/19—Connection re-establishment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/27—Transitions between radio resource control [RRC] states
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Abstract
The invention provides a wireless link recovery method, a terminal and a secondary base station, and relates to the technical field of communication. The wireless link recovery method is applied to a terminal and comprises the following steps: sending a first message to a secondary base station, wherein the first message is used for recovering a wireless link between the terminal and a main base station; receiving a wireless link recovery message fed back by the network equipment; and recovering the wireless link according to the wireless link recovery message. According to the scheme, when the wireless link fails to occur with the MN, the first message for recovering the wireless link between the terminal and the main base station is sent to the auxiliary base station, so that the link can be rapidly recovered as far as possible, and the timeliness of network communication can be ensured.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, a terminal, and a secondary base station for recovering a wireless link.
Background
One of serving base stations of a dual connectivity User Equipment (UE, also called a terminal) is a Master base station (MN), and the other is a Secondary base Station (SN).
In the prior art, a radio link is restored through a Random Access Channel (RACH) process between a UE and an MN, on one hand, the restoration is slow, on the other hand, the RACH process is used for connection reestablishment, and meanwhile, the RACH process can also be used for sending a scheduling request, uplink and downlink data restoration, and the like.
Disclosure of Invention
The embodiment of the invention provides a wireless link recovery method, a terminal and a secondary base station, aiming at solving the problems that the importance of link recovery cannot be embodied and the timeliness of communication cannot be ensured in the conventional wireless link recovery mode.
In order to solve the technical problem, the invention adopts the following scheme:
in a first aspect, an embodiment of the present invention provides a method for recovering a wireless link, where the method is applied to a terminal, and includes:
sending a first message to a secondary base station, wherein the first message is used for recovering a wireless link between the terminal and a main base station;
receiving a wireless link recovery message fed back by the network equipment;
and recovering the wireless link according to the wireless link recovery message.
In a second aspect, an embodiment of the present invention provides a method for recovering a radio link, where the method is applied to a secondary base station, and includes:
receiving a first message sent by a terminal, wherein the first message is used for recovering a wireless link between the terminal and a main base station;
and sending a wireless link recovery message to the terminal according to the first message.
In a third aspect, an embodiment of the present invention provides a terminal, including:
a first sending module, configured to send a first message to an auxiliary base station, where the first message is used to recover a wireless link between a terminal and a main base station;
the first receiving module is used for receiving a wireless link recovery message fed back by the network equipment;
and the execution module is used for recovering the wireless link according to the wireless link recovery message.
In a fourth aspect, an embodiment of the present invention provides a terminal, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the radio link recovery method described above.
In a fifth aspect, an embodiment of the present invention provides a secondary base station, including:
a second receiving module, configured to receive a first message sent by a terminal, where the first message is used to recover a wireless link between the terminal and a main base station;
and the second sending module is used for sending the wireless link recovery message to the terminal according to the first message.
In a sixth aspect, an embodiment of the present invention 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, when executed by the processor, implementing the steps of the radio link recovery method described above.
In a seventh aspect, an embodiment of the present invention provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and the computer program, when executed by a processor, implements the steps of the above-mentioned radio link recovery method.
The invention has the beneficial effects that:
according to the scheme, when the wireless link fails to occur with the MN, the first message for recovering the wireless link between the terminal and the main base station is sent to the auxiliary base station, so that the link can be rapidly recovered as far as possible, and the timeliness of network communication can be ensured.
Drawings
FIG. 1 is a schematic diagram showing the operation of T310 and T311 in the RLM and RLF functions;
fig. 2 is a flowchart illustrating a radio link recovery method applied to a terminal according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a radio link recovery method applied to a secondary base station according to an embodiment of the present invention;
fig. 4 shows a block diagram of a terminal according to an embodiment of the invention;
fig. 5 shows a block diagram of a terminal according to an embodiment of the present invention;
fig. 6 is a schematic block diagram of a secondary base station according to an embodiment of the present invention;
fig. 7 is a block diagram of a secondary base station according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
In making the description of the embodiments of the present invention, some concepts used in the following description will first be explained.
Dual connectivity is a technology introduced in Long Term Evolution (LTE), and will also be used in New Radio (NR). The UE can be connected to two base stations at the same time, and the two base stations provide data transceiving services for the UE at the same time. Because the wireless resources of the two base stations can be used simultaneously, the service data transmission rate of the UE is improved by times.
Two base stations serving the same UE have signaling interfaces therebetween, which can communicate configuration information of related UEs.
The serving base stations of the dual-connectivity UE may belong to the same access network system (RAT), for example: two LTE enbs, or two NR gbbs; it may also belong to different RATs, for example: one LTE eNB, one NR gbb. The invention can be applied to double-connection base stations of any type combination, and the type of the double-connection base station is not limited.
One of the serving base stations of the dual connectivity UE is a Master base station (MN), and the other is a Secondary base Station (SN). Wherein each base station may support Carrier Aggregation (CA) technology. The network configures two special cells (special cells) for the dual connectivity UE, that is, configures one serving Cell of the MN as a Primary serving Cell (PCell) of the UE, and configures a Primary serving Cell (PrimarySecondary Cell, PSCell) of one serving Cell of the SN. The other cell of the MN and the SN serving the UE is a secondary serving cell (SCell) of the UE.
Multi-connection means that more than two base stations serve the same UE. The invention is also applicable to multi-connection, and the type of the multi-connection base station is not limited.
Similar to dual connectivity, one of the serving bss of the multi-connectivity UE is an MN or a Master Cell Group (MCG), and the other is an SN or a Secondary Cell Group (SCG). Wherein each base station may support CA.
The network configures a plurality of special cells (special cells) for the multi-connection UE, that is, configures one serving cell of the MN as a PCell of the UE, and configures a PScell of one serving cell of each SN. The other cell of the MN and the SN serving the UE is the Scell of the UE.
In both LTE and NR systems, the UE has Radio Link Monitor (RLM) functionality. After determining Radio Link Failure (RLF), the UE performs a corresponding link recovery procedure. RLM and RLF are performed only on PCell and PScell.
First, RLM and RLF on PCell
In the RLM function of LTE, UE monitors a radio link by measuring a Signal to Interference plus Noise Ratio (SINR) of a Cell Reference Signal (CRS) corresponding to a Physical Downlink Control CHannel (PDCCH). When the UE physical layer (L1) measures that the SINR of the CRS corresponding to the PDCCH of the PCell is lower than a certain threshold, the wireless link is determined to be out-of-synchronization ("out-of-sync"); the physical layer informs the higher layer (radio resource control (RRC) layer, L3) of an out-of-sync indication, and if the RRC layer continues for N310 out-of-sync indications, the UE RRC layer starts a Timer (Timer) T310.
And if the measured CRS corresponding to the PCell PDCCH is higher than a certain threshold, the wireless link synchronization (in-sync) is determined. The physical layer informs the higher layer (RRC layer) of an in-sync indication and the UE stops the operation of Timer T310 if the RRC layer continues N311 in-sync indications.
If timer T310 runs overtime, the UE determines RLF; and starts a timer T311, during the operation of T311, the UE will try to find a suitable cell for RRC connection re-establishment. Before the reestablishment is successful, the user plane data transmission and reception between the UE and the network is interrupted.
If the UE is not successfully reestablished before T311 times out, the UE transitions from the RRC CONNECTED state (RRC _ CONNECTED) to the RRC IDLE state (RRC _ IDLE).
The working process of T310 and T311 is specifically shown in fig. 1.
Where the durations of N310, N311, T310 and T311 are network configured.
II, RLM and RLF on PSCell
In the RLM function of LTE, UE monitors a radio link by measuring SINR of CRS corresponding to PSCell PDCCH. When the UE physical layer (L1) measures that the SINR of the CRS reference signal corresponding to the PDCCH of the PSCell is lower than a certain threshold, the wireless link is determined to be 'out-of-sync'; the physical layer informs the higher layer (RRC layer, L3) of an out-of-sync indication, and if the RRC layer continues for N313 out-of-sync indications, the UE RRC layer starts a Timer T313.
And if the measured CRS reference signal corresponding to the PSCell PDCCH is higher than a certain threshold, the wireless link is determined to be 'in-sync'. The physical layer informs the higher layer (RRC layer) of an in-sync indication and the UE stops the operation of Timer T313 if the RRC layer continues N314 in-sync indications.
If the timer T313 runs out of time, the UE judges that the SCG radio link fails (SCG-RLF); stopping data transceiving on the SN, and reporting the SCG-RLF to the network.
Wherein the duration of N313, N314, T313 is network configured.
It should be noted that, the RLM and RLF processing flow of NR is similar to that of LTE, such as: the names of the counters/timers used may differ and the type of measurement signal may differ. Currently, 3GPP has agreed that the reference Signal for RLM in NR is different from LTE, and uses a Channel State Information-reference Signal (CSI-RS) and/or a Synchronization Signal Block (SSB) as the reference Signal for RLM. SSB and CSI-RS are NR two reference signals.
Radio Resource Control (RRC) connection re-establishment
When a problem occurs in the communication between the UE and the network, the UE needs to initiate an RRC connection reestablishment procedure. The RRC connection reestablishment procedure is used to restore the signaling connection between the network and the UE, i.e., signaling radio bearer one (SRB 1).
The communication problem between the UE and the network includes the following cases:
a1, Radio Link failure occurs between UE and MN (for example, UE detects that the downlink Radio Link quality of the network is lower than a preset threshold; UE MAC layer Random Access Channel (RACH) attempts reach the maximum times and also fails; UE Radio Link Control (RLC) layer AM mode retransmission reaches the maximum times, etc.);
a2, UE fails to switch;
a3, UE finds out that the integrity protection of the signaling transmitted by SRB1 or SRB2 fails;
a4, the UE finds that the RRC reconfiguration command sent by the network cannot be executed (for example, the parameter value after reconfiguration exceeds the hardware capability of the UE).
The invention provides a wireless link recovery method, a terminal and a secondary base station, aiming at the problems that the existing wireless link recovery mode can not reflect the importance of link recovery and can not ensure the timeliness of communication.
As shown in fig. 2, an embodiment of the present invention provides a method for recovering a wireless link, which is applied to a terminal, and includes:
it should be noted that the first message is used to recover the radio link between the terminal and the main base station, and may be a message involved in a random access procedure or a message other than the random access procedure.
it should be noted that the network device may be an auxiliary base station or a main base station; the radio link recovery message may be any downlink message, or may be a downlink message that the terminal expects but fails to receive.
For example, the radio link recovery message is an RRC reconfiguration message, or an RRC connection setup message, or an RRC connection 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 recover the wireless link between the terminal and the primary base station, the secondary base station needs to feed back a corresponding message to the terminal, and after receiving the message fed back by the terminal, the terminal can recover the wireless link.
The following describes in detail specific implementations of embodiments of the present invention.
First, the terminal utilizes the random access process indication to carry out the wireless link recovery
In this case, the embodiment of the present invention adds a random access trigger reason, and the terminal may perform an instruction to restore the wireless link through a message one (Msg1) and/or a message three (Msg3) of random access.
1. When the message one is used, specifically, the implementation manner of step 201 is:
when determining that a first trigger reason of random access exists, triggering a random access process, and sending a first message of random access to an auxiliary base station;
wherein the first trigger reason is that: a radio link failure occurs between the terminal and the primary base station, and no radio link failure occurs between the terminal and the secondary base station.
In this case, as long as the terminal determines that a radio link failure occurs between the terminal and the primary base station and a radio link failure does not occur between the terminal and the secondary base station, a random access procedure is triggered and a first message of random access is sent.
It should be further noted that, because the first message carries the preamble, the higher the transmission power of the preamble, the higher the transmission success rate is, optionally, the terminal may adjust the transmission power according to the first power ramp step size, and apply the adjusted transmission power to transmit the first message to the secondary base station.
It should be noted that, when the terminal sends the message, the transmission power may consider an influence of a product of the number of retransmissions and the first power ramp-up step, that is, if the terminal does not successfully receive the feedback message (i.e., the random access response message) of the secondary base station after sending the message one, the terminal may retransmit the message one.
It should be further noted that, in order to increase the success rate of sending the first message, the first power ramp-up step may be implemented in one of the following manners:
a11, the first power climbing step length is larger than or equal to a first preset threshold value;
that is, in this case, the transmission power is adjusted using a large power ramping step size.
A12, the priority of the first power climbing step is the configured high-priority power climbing step;
that is, in this case, the adjustment of the transmission power is performed by preferentially using the high-priority power ramping step size.
It should be noted that, the first power ramp step is generally configured by a network device as a terminal, and the network device may be an auxiliary base station or a main base station; normally, the first power climbing step size is configured for the terminal by the main base station; or when the main base station does not configure the first power climbing step length for the terminal, the auxiliary base station configures the first power climbing step length for the terminal; or after the main base station configures the first power climbing step for the terminal, the auxiliary base station reconfigures the first power climbing step for the terminal again/again.
In addition, the secondary base station side may also allocate a larger power to the uplink transmission, for example, specify a larger "TPC command for scheduled pusch" in an uplink grant (UL grant) of a Random Access Response (RAR) message fed back to the terminal, so as to achieve the purpose of quickly recovering the link; the network side may also feedback a smaller Backoff Indicator (BI) value by using a random access response message to achieve the purpose of quickly recovering the link.
2. When the message one and/or the message three are used, specifically, the step 201 is implemented in at least one of the following ways:
a21, when there is at least one trigger reason of random access process, executing the random access process for recovering the wireless link, and sending the message I to the secondary base station;
it should be noted that the trigger reasons of the at least one random access procedure at least include: a first trigger reason that a radio link failure occurs between the terminal and the primary base station and a radio link failure does not occur between the terminal and the secondary base station; because only one random access can be carried out at the same time, when various trigger reasons of the random access process exist, the random access process for recovering the wireless link is preferentially executed, and a message I is sent to the auxiliary base station.
A22, when there is at least one trigger reason of random access process, executing the random access process for restoring the wireless link, preferentially assembling the uplink message related to the link restoration in the message III, and sending the message III to the secondary base station;
it should be noted that, when there are multiple trigger reasons for the random access procedure, when sending the message three of the random access procedure, the uplink message related to the link recovery is preferably assembled in the message three, so as to notify the secondary base station of the failure of the radio link as soon as possible, and to realize the fast recovery of the link as much as possible. It should be further noted that, in addition to assembling the uplink message related to link recovery, the uplink message carrying the trigger cause of other random access procedures in the message three is not excluded.
It should be further noted that, in order to clearly identify the random access type, in the implementation manner of step 201 described above, a first preamble may also be carried in a message sent by the terminal, and optionally, the first preamble is used to instruct to perform radio link recovery, that is, the first preamble is a dedicated preamble for performing radio link recovery in this implementation; optionally, the first preamble is a high-priority preamble, that is, in the random access process, a preamble with a higher priority is used, and when the secondary base station acquires the preamble with the higher priority, the secondary base station may preferentially process the random access process, so as to quickly recover the link.
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, and specifically, the network device may be a secondary base station or a primary base station, that is, the first preamble may be configured by the primary base station as a terminal or configured by the secondary base station as a terminal.
Secondly, the first message uses special resources
Specifically, in this case, the dedicated resource is used to indicate that the radio link between the terminal and the master base station needs to be recovered.
Before the terminal uses the dedicated resource, it is further required to receive configuration information sent by the network device, where the configuration information indicates that the terminal performs configuration of 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 by the secondary base station for the terminal.
Further, upon receiving the information transmitted by the terminal through the dedicated resource, i.e. representing that the terminal desires to quickly recover the radio link with the primary base station, the network side (e.g. the primary base station on the network side, or the secondary base station) may respond accordingly, e.g. transmitting an RRC reconfiguration message, or an RRC connection reestablishment, or an RRC connection recovery message, and the terminal receiving the response message may consider the link as recovered.
Thirdly, the first message is a special message or an extended second message
It should be noted that, in this implementation manner, a new message may be defined as a dedicated message used when performing link recovery; the terminal sends the uplink resource to the secondary base station for requesting to recover the link, and the network side (e.g., a primary base station of the network side or the secondary base station) may respond accordingly, for example, send an RRC reconfiguration message, or an RRC connection reestablishment, or an RRC connection recovery message, and the terminal receiving the response message may consider that the link is recovered.
In this implementation manner, the existing message (i.e. the second message mentioned above) may also be expanded, and the terminal is given a new function, and the terminal sends the new function to the secondary base station through the uplink resource to request to recover the link, and the network side may make a corresponding response, for example, send an RRC reconfiguration message, or an RRC connection reestablishment, or an RRC connection recovery message, and the terminal receiving the response message may consider that the link is recovered.
It should be noted that the embodiment of the present invention may be applied to 4G and subsequent evolution systems.
The embodiment of the invention ensures that the link recovery is completed as fast as possible when the terminal and the MN have wireless link failure, and can ensure the timeliness of network communication.
Specifically, as shown in fig. 3, fig. 3 is a schematic flow chart of a radio link recovery method according to an embodiment of the present invention, where the radio link recovery method is applied to a secondary base station, and includes:
step 301, receiving a first message sent by a terminal, where the first message is used to recover a wireless link between the terminal and a main base station;
step 302, according to the first message, sending a wireless link recovery message to the terminal.
Optionally, the first message is a first message, and the receiving of the first message sent by the terminal includes:
receiving a first message sent by a terminal;
the first message is sent to the auxiliary base station by triggering a random access process when the terminal determines that a first trigger reason for random access exists;
the first trigger reason is that: a radio link failure occurs between the terminal and the primary base station, and no radio link failure occurs between the terminal and the secondary base station.
Further, the receiving of the first message sent by the terminal includes:
and the receiving terminal adjusts the sending power according to the first power climbing step length and applies the first message sent by the adjusted sending power.
Specifically, the first power ramp step size is greater than or equal to a first preset threshold value, or the priority of the first power ramp step size is a configured high-priority power ramp step size.
Optionally, the first message is a first message and/or a third message, and the first message sent by the receiving terminal includes:
when at least one trigger reason of the random access process exists, a receiving terminal executes the random access process for recovering the wireless link, and sends a message I; and/or
When at least one trigger reason of the random access process exists in the receiving terminal, executing the random access process for recovering the wireless link, and sending a third message, wherein the third message preferentially assembles an uplink message related to link recovery;
wherein the trigger cause of the at least one random access procedure at least comprises: and a first trigger reason that a radio link failure occurs between the terminal and the primary base station and no radio link failure occurs between the terminal and the secondary base station.
Further, the first message carries a first preamble;
wherein the first preamble is a high priority preamble, or
The first preamble is used to indicate radio link recovery.
Optionally, when the main base station does not configure the first preamble for the terminal, before receiving the first message sent by the terminal, the method further includes:
configuring a first preamble to the terminal.
Optionally, the first message uses a dedicated resource, where the dedicated resource is used to indicate that the radio link between the terminal and the master base station needs to be recovered.
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 the configuration of the dedicated resource is performed.
Optionally, the first message is a dedicated message or an extended second message, and the first message is used for requesting radio link recovery.
It should be noted that all the descriptions regarding the secondary base station in the above embodiments are applicable to the embodiment of the radio link recovery method, and the same technical effects can be achieved.
As shown in fig. 4, an embodiment of the present invention provides a terminal 400, including:
a first sending module 401, configured to send a first message to the secondary base station, where the first message is used to recover a wireless link between the terminal and the primary base station;
a first receiving module 402, configured to receive a radio link recovery message fed back by a network device;
an executing module 403, configured to perform radio link recovery according to the radio link recovery message.
Optionally, the first message is a first message, and the first sending module 401 is configured to:
when determining that a first trigger reason of random access exists, triggering a random access process, and sending a first message of random access to an auxiliary base station;
wherein the first trigger reason is that: a radio link failure occurs between the terminal and the primary base station, and no radio link failure occurs between the terminal and the secondary base station.
Further, the manner of sending the first random access message to the secondary base station is as follows:
and adjusting the transmission power according to the first power climbing step length, and applying the adjusted transmission power to transmit a message I to the auxiliary base station.
Specifically, the first power ramp step size is greater than or equal to a first preset threshold value, or the priority of the first power ramp step size is a configured high-priority power ramp step size.
Optionally, the first message is a first message and/or a third message, and the first sending module is configured to:
when at least one trigger reason of the random access process exists, executing the random access process for recovering the wireless link, and sending a message I to the secondary base station; and/or
When at least one trigger reason of the random access process exists, executing the random access process for recovering the wireless link, preferentially assembling an uplink message related to link recovery in a message III, and sending the message III to the secondary base station;
wherein the trigger cause of the at least one random access procedure at least comprises: and a first trigger reason that a radio link failure occurs between the terminal and the primary base station and no radio link failure occurs between the terminal and the secondary base station.
Specifically, the first message carries a first preamble;
wherein the first preamble is a high priority preamble, or
The first preamble is used to indicate radio link recovery.
Further, the first preamble is configured by a network device or agreed upon by a protocol.
Optionally, the first message uses a dedicated resource, where the dedicated resource is used to indicate that the radio link between the terminal and the master base station needs to be recovered.
Further, the terminal further includes:
the configuration receiving module is used for receiving configuration information sent by the network equipment;
wherein the configuration information indicates the terminal to perform configuration of dedicated resources.
Optionally, the first message is a dedicated message or an extended second message, and the first message is used for requesting radio link recovery.
It should be noted that the terminal embodiment is a terminal corresponding to the above-mentioned method for recovering a radio link applied to a terminal, and all implementation manners of the above-mentioned embodiment are applicable to the terminal embodiment, and the same technical effects as those can also be achieved.
Fig. 5 is a schematic diagram of a hardware structure of a terminal for implementing an embodiment of the present invention.
The terminal 50 includes but is not limited to: radio unit 510, network module 520, audio output unit 530, input unit 540, sensor 550, display unit 560, user input unit 570, interface unit 580, memory 590, processor 511, and power supply 512. Those skilled in the art will appreciate that the terminal configuration shown in fig. 5 is not intended to be limiting, and that the terminal may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.
The radio frequency unit 510 is configured to send a first message to the secondary base station, where the first message is used to recover a wireless link between the terminal and the primary base station; receiving a wireless link recovery message fed back by the network equipment; and recovering the wireless link according to the wireless link recovery message.
The terminal of the embodiment of the invention sends the first message for recovering the wireless link between the terminal and the main base station to the auxiliary base station when the wireless link fails to occur with the MN, thereby ensuring that the recovery of the link is completed as fast as possible and ensuring the timeliness of network communication.
It should be understood that, in the embodiment of the present invention, the radio frequency unit 510 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a network device and then processes the received downlink data to the processor 511; in addition, the uplink data is sent to the network device. In general, 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 unit 510 may also communicate with a network and other devices through a wireless communication system.
The terminal provides the user with wireless broadband internet access through the network module 520, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.
The audio output unit 530 may convert 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. Also, the audio output unit 530 may also provide audio output related to a specific function performed by the terminal 50 (e.g., a call signal reception sound, a 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 for receiving an audio or video signal. The input Unit 540 may include a Graphics Processing Unit (GPU) 541 and a microphone 542, and the Graphics processor 541 processes image data of a still picture or video obtained by an image capturing device (e.g., a camera) in a video capture mode or an image capture mode. The processed image frames may be displayed on the display unit 560. The image frames processed by the graphic processor 541 may be stored in the memory 590 (or other storage medium) or transmitted via the radio frequency unit 510 or the network module 520. The microphone 542 may receive sound, and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication network device via the radio frequency unit 510 in case of the phone call mode.
The terminal 50 also includes at least one sensor 550, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that adjusts the brightness of the display panel 561 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 561 and/or the backlight when the terminal 50 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensor 550 may further include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., which will not be described herein.
The display unit 560 is used to display information input by a 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 (LCD), an 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 inputs 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 referred to as a touch screen, can collect touch operations by a user (e.g., operations by a user on the touch panel 571 or near the touch panel 571 using a finger, a stylus, or any suitable object or attachment). The touch panel 571 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 511, and receives and executes commands sent from the processor 511. In addition, the touch panel 571 can be implemented by various types, such as resistive, capacitive, infrared, and surface acoustic wave. The user input unit 570 may include other input devices 572 in addition to the touch panel 571. In particular, the other input devices 572 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described herein.
Further, the touch panel 571 can be overlaid on the display panel 561, and when the touch panel 571 detects a touch operation on or near the touch panel 571, the touch panel is transmitted to the processor 511 to determine the type of the touch event, and then the processor 511 provides a corresponding visual output on the display panel 561 according to the type of the touch event. Although the touch panel 571 and the display panel 561 are shown in fig. 5 as two independent components to implement the input and output functions of the terminal, in some embodiments, the touch panel 571 and the display panel 561 may be integrated to implement the input and output functions of the terminal, and the implementation is not limited herein.
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 supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 580 may be used to receive input (e.g., 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 to transmit data between the terminal 50 and an external device.
The memory 590 may be used to store software programs as well as various data. The memory 590 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 590 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The processor 511 is a control center of the terminal, connects various parts of the entire terminal using various interfaces and lines, and performs various functions of the terminal and processes data by running or executing software programs and/or modules stored in the memory 590 and calling data stored in the memory 590, thereby integrally monitoring the terminal. Processor 511 may include one or more processing units; preferably, the processor 511 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 511.
The terminal 50 may further include a power source 512 (e.g., a battery) for supplying power to various components, and preferably, the power source 512 may be logically connected to the processor 511 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system.
In addition, the terminal 50 includes some functional modules that are not shown, and will not be described in detail herein.
Preferably, an embodiment of the present invention further provides a terminal, including a processor 511, a memory 590, and a computer program stored in the memory 590 and operable on the processor 511, where the computer program is executed by the processor 511 to implement each process of the embodiment of the method for recovering a radio link applied to the terminal side, and can achieve the same technical effect, and in order to avoid repetition, the detailed description is omitted here.
The embodiment of the present invention further 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, the computer program implements each process of the embodiment of the method for recovering a wireless link applied to a terminal side, and can achieve the same technical effect, and in order to avoid repetition, the detailed description is omitted here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
As shown in fig. 6, an embodiment of the present invention further provides a secondary base station 600, including:
a second receiving module 601, configured to receive a first message sent by a terminal, where the first message is used to recover a wireless link between the terminal and a main base station;
a second sending module 602, configured to send a radio link recovery message to the terminal according to the first message.
Optionally, the first message is a first message, and the second receiving module 601 is configured to:
receiving a first message sent by a terminal;
the first message is sent to the auxiliary base station by triggering a random access process when the terminal determines that a first trigger reason for random access exists;
the first trigger reason is that: a radio link failure occurs between the terminal and the primary base station, and no radio link failure occurs between the terminal and the secondary base station.
Further, the implementation manner of the first message sent by the receiving terminal is as follows:
and the receiving terminal adjusts the sending power according to the first power climbing step length and applies the first message sent by the adjusted sending power.
Specifically, the first power ramp step size is greater than or equal to a first preset threshold value, or the priority of the first power ramp step size is a configured high-priority power ramp step size.
Optionally, the first message is a first message and/or a third message, and the second receiving module 601 is configured to:
when at least one trigger reason of the random access process exists, a receiving terminal executes the random access process for recovering the wireless link, and sends a message I; and/or
When at least one trigger reason of the random access process exists in the receiving terminal, executing the random access process for recovering the wireless link, and sending a third message, wherein the third message preferentially assembles an uplink message related to link recovery;
wherein the trigger cause of the at least one random access procedure at least comprises: and a first trigger reason that a radio link failure occurs between the terminal and the primary base station and no radio link failure occurs between the terminal and the secondary base station.
Further, the first message carries a first preamble;
wherein the first preamble is a high priority preamble, or
The first preamble is used to indicate radio link recovery.
Further, the terminal further includes:
a configuration module, configured to configure the first preamble to the terminal.
Optionally, the first message uses a dedicated resource, where the dedicated resource is used to indicate that the radio link between the terminal and the master base station needs to be recovered.
Further, the terminal further includes:
a third sending module, configured to send configuration information to the terminal;
wherein the configuration information indicates that the configuration of the dedicated resource is performed.
Optionally, the first message is a dedicated message or an extended second message, and the first message is used for requesting radio link recovery.
It should be noted that the secondary base station embodiment is a secondary base station corresponding to the above-mentioned radio link recovery method applied to the secondary base station, and all the implementation manners of the above-mentioned embodiments are applicable to the secondary base station embodiment, and the same technical effects as those can be achieved.
An embodiment of the present invention further provides a secondary base station, including: the processor executes the computer program to implement each process applied to the embodiment of the method for recovering a radio link of the secondary base station, and the same technical effect can be achieved, and further details are not described herein to avoid repetition.
An embodiment of the present invention further 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, the computer program implements each process in the embodiment of the radio link recovery method applied to the secondary base station, and can achieve the same technical effect, and is not described herein again to avoid repetition. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
Fig. 7 is a structural diagram of a secondary base station according to an embodiment of the present invention, which can implement details of the above-mentioned radio 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, wherein:
the processor 701 is configured to read the program in the memory 703 and execute the following processes:
receiving, by a transceiver 702, a first message sent by a terminal, where the first message is used to recover a wireless link between the terminal and a master base station;
and sending a wireless link recovery message to the terminal according to the first message.
In fig. 7, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 701, and various circuits, represented by memory 703, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 702 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over 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 in performing operations.
Optionally, the first message is a first message, and the processor 701 is configured to read a program in the memory 703 and execute the following processes:
receiving a first message sent by a terminal through the transceiver 702;
the first message is sent to the auxiliary base station by triggering a random access process when the terminal determines that a first trigger reason for random access exists;
the first trigger reason is that: a radio link failure occurs between the terminal and the primary base station, and no radio link failure occurs between the terminal and the secondary base station.
Further, the processor 701 is configured to read the program in the memory 703, and perform the following processes:
and the receiving terminal adjusts the sending power according to the first power climbing step length and applies the first message sent by the adjusted sending power.
Specifically, the first power ramp step size is greater than or equal to a first preset threshold value, or the priority of the first power ramp step size is a configured high-priority power ramp step size.
Optionally, the first message is a message one and/or a message three, and the processor 701 is configured to read a program in the memory 703 and execute the following processes:
when at least one trigger reason of the random access process exists, a receiving terminal executes the random access process for recovering the wireless link, and sends a message I; and/or
When at least one trigger reason of the random access process exists in the receiving terminal, executing the random access process for recovering the wireless link, and sending a third message, wherein the third message preferentially assembles an uplink message related to link recovery;
wherein the trigger cause of the at least one random access procedure at least comprises: and a first trigger reason that a radio link failure occurs between the terminal and the primary base station and no radio link failure occurs between the terminal and the secondary base station.
Specifically, the first message carries a first preamble;
wherein the first preamble is a high priority preamble, or
The first preamble is used to indicate radio link recovery.
Further, the processor 701 is configured to read the program in the memory 703, and perform the following processes:
configuring a first preamble to the terminal.
Optionally, the first message uses a dedicated resource, where the dedicated resource is used to indicate that the radio link between the terminal and the master base station needs to be recovered.
Further, the processor 701 is configured to read the program in the memory 703, and perform the following processes:
sending configuration information to the terminal via transceiver 702;
wherein the configuration information indicates that the configuration of the dedicated resource is performed.
Optionally, the first message is a dedicated message or an extended second message, and the first message is used for requesting radio link recovery.
The secondary base Station may be a base Station (BTS) in Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), a base Station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), an evolved Node B (eNB, eNodeB) in LTE, a relay Station, an Access point, a base Station in a future 5G network, or the like, which is not limited herein.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.
Claims (30)
1. A method for recovering a wireless link is applied to a terminal, and is characterized by comprising the following steps:
sending a first message to a secondary base station, wherein the first message is used for recovering a wireless link between the terminal and a main base station;
receiving a wireless link recovery message fed back by the network equipment;
and recovering the wireless link according to the wireless link recovery message.
2. The method of claim 1, wherein the first message is a first message, and wherein the sending the first message to the secondary base station comprises:
when determining that a first trigger reason of random access exists, triggering a random access process, and sending a first message of random access to an auxiliary base station;
wherein the first trigger reason is that: a radio link failure occurs between the terminal and the primary base station, and no radio link failure occurs between the terminal and the secondary base station.
3. The method of claim 2, wherein the sending the message one of random access to the secondary base station comprises:
and adjusting the transmission power according to the first power climbing step length, and applying the adjusted transmission power to transmit a message I to the auxiliary base station.
4. The method of claim 3, wherein the first power ramp-up step size is greater than or equal to a first preset threshold value, or wherein the priority of the first power ramp-up step size is a configured high priority power ramp-up step size.
5. The method of claim 1, wherein the first message is a message one and/or a message three, and wherein the sending the first message to the secondary base station comprises:
when at least one trigger reason of the random access process exists, executing the random access process for recovering the wireless link, and sending a message I to the secondary base station; and/or
When at least one trigger reason of the random access process exists, executing the random access process for recovering the wireless link, preferentially assembling an uplink message related to link recovery in a message III, and sending the message III to the secondary base station;
wherein the trigger cause of the at least one random access procedure at least comprises: and a first trigger reason that a radio link failure occurs between the terminal and the primary base station and no radio link failure occurs between the terminal and the secondary base station.
6. The method for recovering the wireless link according to claim 2 or 5, wherein the first preamble is carried in the first message;
wherein the first preamble is a high priority preamble, or
The first preamble is used to indicate radio link recovery.
7. The radio link recovery method according to claim 6, wherein the first preamble is configured by a network device or agreed upon by a protocol.
8. The method according to claim 1, wherein the first message uses a dedicated resource for indicating that radio link recovery between the terminal and the master base station is required.
9. The method of claim 8, further comprising, prior to the sending the first message to the secondary base station:
receiving configuration information sent by network equipment;
wherein the configuration information indicates the terminal to perform configuration of dedicated resources.
10. The method of claim 1, wherein the first message is a dedicated message or an extended second message, and wherein the first message is used to request radio link recovery.
11. A method for recovering a radio link is applied to a secondary base station, and is characterized by comprising the following steps:
receiving a first message sent by a terminal, wherein the first message is used for recovering a wireless link between the terminal and a main base station;
and sending a wireless link recovery message to the terminal according to the first message.
12. The method according to claim 11, wherein the first message is a first message, and the receiving the first message sent by the terminal includes:
receiving a first message sent by a terminal;
the first message is sent to the auxiliary base station by triggering a random access process when the terminal determines that a first trigger reason for random access exists;
the first trigger reason is that: a radio link failure occurs between the terminal and the primary base station, and no radio link failure occurs between the terminal and the secondary base station.
13. The method of claim 12, wherein the receiving a first message sent by the terminal comprises:
and the receiving terminal adjusts the sending power according to the first power climbing step length and applies the first message sent by the adjusted sending power.
14. The method of claim 13, wherein the first power ramp-up step size is greater than or equal to a first preset threshold value, or wherein the priority of the first power ramp-up step size is a configured high priority power ramp-up step size.
15. The method according to claim 11, wherein the first message is a message one and/or a message three, and the receiving the first message sent by the terminal includes:
when at least one trigger reason of the random access process exists, a receiving terminal executes the random access process for recovering the wireless link, and sends a message I; and/or
When at least one trigger reason of the random access process exists in the receiving terminal, executing the random access process for recovering the wireless link, and sending a third message, wherein the third message preferentially assembles an uplink message related to link recovery;
wherein the trigger cause of the at least one random access procedure at least comprises: and a first trigger reason that a radio link failure occurs between the terminal and the primary base station and no radio link failure occurs between the terminal and the secondary base station.
16. The method for recovering the radio link according to claim 12 or 15, wherein the first preamble is carried in the first message;
wherein the first preamble is a high priority preamble, or
The first preamble is used to indicate radio link recovery.
17. The method of claim 16, further comprising, before receiving the first message sent by the terminal:
configuring a first preamble to the terminal.
18. The method of claim 11, wherein the first message uses a dedicated resource, and wherein the dedicated resource is used for indicating that the radio link between the terminal and the primary base station needs to be recovered.
19. The method of claim 18, further comprising, before the first message sent by the receiving terminal:
sending configuration information to the terminal;
wherein the configuration information indicates that the configuration of the dedicated resource is performed.
20. The 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 radio link recovery.
21. A terminal, comprising:
a first sending module, configured to send a first message to an auxiliary base station, where the first message is used to recover a wireless link between a terminal and a main base station;
the first receiving module is used for receiving a wireless link recovery message fed back by the network equipment;
and the execution module is used for recovering the wireless link according to the wireless link recovery message.
22. The terminal of claim 21, wherein the first message is a message one, and wherein the first sending module is configured to:
when determining that a first trigger reason of random access exists, triggering a random access process, and sending a first message of random access to an auxiliary base station;
wherein the first trigger reason is that: a radio link failure occurs between the terminal and the primary base station, and no radio link failure occurs between the terminal and the secondary base station.
23. The terminal of claim 21, wherein the first message is a message one and/or a message three, and the first sending module is configured to:
when at least one trigger reason of the random access process exists, executing the random access process for recovering the wireless link, and sending a message I to the secondary base station; and/or
When at least one trigger reason of the random access process exists, executing the random access process for recovering the wireless link, preferentially assembling an uplink message related to link recovery in a message III, and sending the message III to the secondary base station;
wherein the trigger cause of the at least one random access procedure at least comprises: and a first trigger reason that a radio link failure occurs between the terminal and the primary base station and no radio link failure occurs between the terminal and the secondary base station.
24. The terminal of claim 21, wherein the first message uses a dedicated resource, and wherein the dedicated resource is used for indicating that radio link recovery between the terminal and the primary base station is required.
25. The terminal of claim 24, further comprising:
the configuration receiving module is used for receiving configuration information sent by the network equipment;
wherein the configuration information indicates the terminal to perform configuration of dedicated resources.
26. The terminal of claim 21, wherein the first message is a dedicated message or an extended second message, and wherein the first message is used to request radio link recovery.
27. A terminal, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the radio link recovery method according to any of claims 1 to 10.
28. A secondary base station, comprising:
a second receiving module, configured to receive a first message sent by a terminal, where the first message is used to recover a wireless link between the terminal and a main base station;
and the second sending module is used for sending the wireless link recovery message to the terminal according to the first message.
29. A secondary base station, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, performs the steps of the radio link recovery method according to any of claims 11 to 20.
30. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps of the radio link recovery method according to any of the claims 1 to 20.
Priority Applications (2)
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| PCT/CN2019/109286 WO2020073861A1 (en) | 2018-10-11 | 2019-09-30 | Radio link recovery method, terminal and secondary base station |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811184421.9A CN111050419B (en) | 2018-10-11 | 2018-10-11 | Wireless link recovery method, terminal, secondary base station and storage medium |
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| WO2020073861A1 (en) | 2020-04-16 |
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