Method and apparatus for wireless communication

Abstract

The present invention provides a method and apparatus for wireless communication. The method may include: reconstructing, by a processor of the apparatus, a radio resource control connection with a wireless network; when the reconstruction of the radio resource control connection is completed, detecting, by the processor, whether a type of radio bearer service is restored; and in response to detecting that the type of radio bearer service is not restored, restoring, by the processor, the type of radio bearer service. By using the present invention, wireless communication can be better performed.

Description

Technical Field

[0001] The present invention relates to mobile communications, and more particularly to techniques for detecting Radio Resource Control (RRC) reconstruction without reconfiguration in mobile communications. Background Art

[0002] Unless otherwise indicated, the methods described in this section are not prior art to the claims and are not admitted to be prior art by virtue of inclusion in this section.

[0003] According to the specifications of the 3rd rd Generation Partnership Project (3GPP), radio resource control (RRC) connection reconstruction can be configured by a user equipment (UE) based on multiple conditions, where the conditions can be such as radio link failure (RLF), reconfiguration failure, handover failure, integrity check (such as checksum) error, and mobility failure from Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access (E-UTRA) (such as 4th generation (4 th(Handover failure in the case of switching from 3G to 4G). Under the 3GPP Technical Specification (TS) 36.331, when the reconstruction is completed, the data transfer of the Signaling Radio Bearer (SRB) type 1 (SRB1) can be resumed. Then, the network can use the SRB type 2 (SRB2) to send reconfiguration and Data Radio Bearer (DRB) information to resume the Radio Bearer (RB) service. It can also be said that by using the RRC connection reconstruction, SRB1 can be reconfigured to resume the data on SRB1 and restart the Access Stratum (AS) protection. However, due to the RRC connection reconstruction, the services on SRB2 and DRB are suspended, so they need to be resumed. In the case where the network does not send the RRC reconfiguration message, or in the case where the RRC reconfiguration message is lost after the reconstruction is executed, since the DRB is suspended, the ongoing services (such as Voice over Long-Term Evolution (VoLTE) or File Transfer Protocol (FTP) download) will be suspended. Therefore, the user experience will be negatively affected. Therefore, it is necessary to detect this scenario so that the long-term suspension of SRB2 and DRB can be avoided. Summary of the Invention

[0004] The following summary of the invention is merely illustrative and is not intended to limit the present invention in any way. That is, the summary of the invention is provided to introduce the concepts, highlights, benefits, and advantages of the novel and non-obvious technologies described in the present invention. The preferred embodiments will be further described in the detailed description section. Therefore, the following summary of the invention is neither intended to identify the essential features of the claimed subject matter nor to determine the scope of the claimed subject matter.

[0005] One of the objectives of the present invention is to propose different solutions, concepts, designs, technologies, systems, methods, and devices to solve the above problems. It is believed that various solutions proposed according to the present invention can avoid the long-term suspension of SRB2 and DRB.

[0006] On the one hand, a method for wireless communication may include: reconstructing, by a processor of a device, a radio resource control connection with a wireless network; when the reconstruction of the radio resource control connection is completed, detecting, by the processor, whether a type of radio bearer service is resumed; and in response to detecting that the type of radio bearer service is not resumed, resuming, by the processor, the type of radio bearer service.

[0007] On the other hand, a method for wireless communication may include: reconstructing, by a processor of a device, a radio resource control connection with a wireless network; when the reconstruction of the radio resource control connection is completed, detecting, by the processor, whether a signaling radio bearer type 2 service or a data radio bearer service is restored; and in response to detecting that the signaling radio bearer type 2 service or the data radio bearer service is not restored, restoring, by the processor, the signaling radio bearer type 2 service or the data radio bearer service. Detecting whether the signaling radio bearer type 2 service or the data radio bearer service is restored includes detecting by using one or more of a plurality of detection mechanisms, where the plurality of detection mechanisms includes an upper layer-driven detection mechanism, a timer-driven detection mechanism, and a lower layer-driven detection mechanism. Restoring the signaling radio bearer type 2 service or the data radio bearer service includes restoring by using one or more of a plurality of restoration mechanisms, where the plurality of restoration mechanisms includes: a first restoration mechanism that includes releasing the radio resource control connection; a second restoration mechanism that includes reconstructing a cell connection; and a third restoration mechanism that includes resynchronizing with the wireless network.

[0008] It should be noted that although the description of the present invention may be provided in the context of a specific radio access technology, network, and network topology (such as a 5G / NR mobile network), the concepts, solutions, and any variations or derivatives thereof proposed by the present invention can be implemented in, used for, or by other types of wireless and wired communication technologies, networks, and network topologies (such as Ethernet, Evolved Packet System (EPS), Universal Terrestrial Radio Access Network (UTRAN), Evolved UTRAN (E-UTRAN), Global System for Mobile communication (GSM), General Packet Radio Service (GPRS) / Enhanced Data rates for Global Evolution (EDGE) Radio Access Network (GERAN), Long-Term Evolution (LTE), LTE-Advanced, LTE-Advanced Pro, Internet of Things (IoT), Narrow Band-IoT (NB-IoT), and Industrial Internet of Things (IIoT), as well as any future developed network technologies). Therefore, the scope of the present invention is not limited to the examples described in the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The accompanying drawings are included to provide a further understanding of the present invention, and are incorporated into and constitute a part of the present invention. The drawings may illustrate embodiments of the present invention and, together with the description, be used to explain the principles of the present invention. It is understood that the drawings are not necessarily to scale, as some components may be shown at dimensions that are not in proportion to their actual implementation dimensions for the purpose of clearly illustrating the concepts of the present invention.

[0010] Figure 1 is a schematic diagram of an exemplary network environment in which various solutions and schemes according to the present invention can be implemented.

[0011] Figure 2 is a block diagram of an exemplary communication system according to an embodiment of the present invention.

[0012] Figure 3 is a flowchart of an exemplary process according to an embodiment of the present invention.

[0013] Figure 4 is a flowchart of an exemplary process according to an embodiment of the present invention. Detailed Embodiments

[0014] The present invention discloses detailed examples and embodiments of the claimed subject matter. However, it should be understood that the disclosed examples and embodiments of the present invention are merely illustrative of the claimed subject matter, and the claimed subject matter may be implemented in various forms. However, the present invention may be implemented in many different forms and should not be construed as limited to the exemplary embodiments and embodiments described herein. On the contrary, these exemplary embodiments and embodiments are provided so that the description of the present invention is thorough and complete, and the scope of the present invention can be fully conveyed to those skilled in the art. In the following description, well-known features and technical details may be omitted to avoid unnecessarily obscuring the embodiments and embodiments of the present invention.

[0015] Overview

[0016] Embodiments according to the present invention are related to various techniques, methods, schemes, and / or solutions for detecting RRC connection reestablishment without reconfiguration in mobile communications. According to the present invention, multiple possible solutions may be implemented individually or jointly. That is, although these possible solutions may be described separately below, two or more of these solutions may be implemented in one combination or in another combination.

[0017] Figure 1 Schematic diagram illustrating an exemplary network environment 100 in which various solutions and schemes according to the present invention may be implemented. Refer to Figure 1 , the network environment 100 may include a User Equipment (UE) 110 and a wireless network 120 (such as a fifth-generation (5 th Generation, 5G) New Radio (NR) mobile network) for wireless communication via a base station or network node 125 (such as an evolved Node B (eNB), a next Generation NodeB (gNB), or a Transmit / Receive Point (TRP)). In the network environment 100, the UE 110 and the wireless network 120 may be configured to implement various schemes according to the present invention related to detecting RRC connection reestablishment without reconfiguration in mobile communications.

[0018] In various solutions proposed according to the present invention, one or more detection mechanisms can be implemented to detect the following scenarios: when the RRC connection reestablishment ends, UE 110 does not have SRB2 and DRB services. The first detection mechanism can include upperlayer-driven detection. The second detection mechanism can include timer-driven detection. The third detection mechanism can include lower-layer RLF monitoring.

[0019] When implementing the first detection mechanism, the upper layer can monitor a specific set of services, such as including but not limited to Evolved Packet System (EPS) Mobility Management (EMM) services, EPS Session Management (ESM) services, application services, and VoLTE services. In the event that one of the above services cannot be implemented at the lower layer, the application can request the lower layer to handle this scenario (due to RRC connection reestablishment, UE 110 does not have SRB2 and DRB services) to improve the user experience. The terms "upper layer" and "lower layer" in the present invention can refer to the application layer or the Non-Access Stratum (NAS), and the term "lower layer" can refer to the RRC layer.

[0020] When implementing the second detection mechanism, after RRC connection reestablishment, an RRC reconfiguration message for SRB2 and DRB establishment can be received at a specific time. For example, after RRC connection reestablishment, UE 110 can check based on a timer (such as 10 seconds) whether an RRC reconfiguration message is received from network node 125 within a predefined time period to restore SRB2 / DRB services.

[0021] When implementing the third detection mechanism, the lower layer (such as the RRC layer) can monitor whether RLF occurs. For example, in the event of a low signal level (such as below a predefined threshold), the lower layer may not be able to decode a message (such as an RRC reconfiguration message), and thus, the lower layer can indicate RLF to the upper layer. The UE can determine whether RLF occurs according to other conditions defined in 3GPP TS 36.331. Alternatively, UE 110 can continue to receive the same data from network node 125 and still cannot be recovered by Radio Link Control (RLC) status reports. In addition, UE110 can consider network node 125 (and radio network 120) as unsynchronized.

[0022] In various solutions proposed according to the present invention, in the event that the scenario is detected by any of the above detection mechanisms (i.e., due to RRC connection reestablishment, UE 110 does not have SRB2 and DRB services), UE 110 can utilize one or more of multiple recovery mechanisms to recover SRB2 and DRB services. The first recovery mechanism may include UE 110 releasing itself. The second recovery mechanism may include UE 110 reestablishing itself again. The third recovery mechanism may include UE 110 triggering Layer 2 (L2) control signaling and / or processes to resynchronize with network node 125 (and radio network 120).

[0023] When implementing the first recovery mechanism, UE 110 can release itself. For example, in the event of receiving a paging message (for a Mobile-Terminated (MT) call service), UE 110 can trigger a local release of its RRC connection with network node 125 to enter the idle mode. Then, UE 110 can establish a connection again to enter the connected mode from the idle mode to recover SRB2 and DRB services. In this case, UE 110 can avoid the lack of SRB2 and DRB services.

[0024] When implementing the second recovery mechanism, UE 110 can reestablish a cell connection. In particular, UE 110 can trigger a reestablishment (to attempt RRC reconfiguration again) and determine whether network node 125 recovers SRB2 and DRB services. However, if UE 110 remains in this situation for a short period of time, UE 110 may continue to suffer the same problem on cell 130 associated with network node 125. Therefore, through the cell bar mechanism according to 3GPP specifications, cell 130 can no longer be resident by UE 110, and UE 110 can attempt to reside on a different cell (not shown) other than cell 130.

[0025] When implementing the third recovery mechanism, the UE 110 may trigger L2 control signaling and / or processes to resynchronize with the network node 125 (and the radio network 120). For example, the UE 110 may trigger an Evolved Packet Data Converge Protocol (EPDCP) or an Enhanced Relay Link Capacity (ERLC) status report. Alternatively, the UE 110 may send a Buffer Status Report (BSR) or a Scheduling Request (SR), or the UE 110 may trigger another random access process.

[0026] Under the solution proposed according to the present invention, when detecting a scenario where the RRC connection reestablishment is completed but the UE 110 does not have SRB2 and DRB services (such as by detecting using one, some, or all of various detection mechanisms) and attempting to recover the SRB2 and DRB services, the UE 110 may select one of multiple recovery mechanisms (such as the first recovery mechanism or the third recovery mechanism) to attempt to recover the SRB2 and DRB services. If the selected recovery mechanism fails to successfully recover the SRB2 and DRB services, the UE 110 may select another mechanism among the multiple recovery mechanisms (such as the second recovery mechanism) to attempt to recover the SRB2 and DRB services. Under the proposed solution, the UE 110 may implement some or all of the recovery mechanisms in a random order or a predetermined order (for example, first implement the first recovery mechanism; if the first recovery mechanism is not successful, then implement the third recovery mechanism; if both the first and third recovery mechanisms are not successful, then implement the second recovery mechanism next). In addition, the UE 110 may repeat the implementation of the recovery mechanisms in the same order or a different order until the SRB2 and DRB services are recovered.

[0027] Exemplary embodiments

[0028] Figure 2 Exemplify a communication system 200 having at least an exemplary device 210 and an exemplary device 220 according to an embodiment of the present invention. The devices 210 and 220 may perform various functions to implement the solutions, techniques, processes, and methods related to detecting an RRC connection reestablishment without reconfiguration in mobile communications described in the present invention, including various solutions (including the network environment 100) described in combination with the above-mentioned designs, concepts, solutions, systems, and methods, and the following processes.

[0029] Each of apparatuses 210 and 220 may be part of an electronic device, where the electronic device may be a network device or a UE (such as UE 110), such as a portable or mobile device, a wearable device, a vehicle, a wireless communication device, or a computing device. For example, each of apparatuses 210 and 220 may be implemented in a smart phone, a smart watch, a personal digital assistant, an electronic control unit (ECU) in a vehicle, a digital camera, or a computing device (such as a tablet computer, a laptop computer, or a notebook computer). Each of apparatuses 210 and 220 may also be part of a machine-type device, where the machine-type device may be an IoT, NB-IoT, or IIoT device, such as a fixed or static device, a home device, a roadside unit (RSU), a wired communication device, or a computing device. For example, each of apparatuses 210 and 220 may be implemented in a smart thermostat, a smart refrigerator, a smart door lock, a wireless speaker, or a home control center. When implemented as or in a network device, apparatuses 210 and / or 220 may be implemented in an evolved Node B (eNB) in an LTE, advanced LTE, or advanced LTE Pro network, or in a next generation Node B (gNB) or TRP in a 5G, NR, IoT, NB-IoT, or IIoT network.

[0030] In some embodiments, each of apparatuses 210 and 220 may be implemented in the form of one or more integrated-circuit (IC) chips, such as including but not limited to one or more single-core processors, one or more multi-core processors, one or more reduced-instruction-set computing (RISC) processors, or one or more complex-instruction-set computing (CISC) processors. In the various scenarios described above, each of apparatuses 210 and 220 may be implemented in or as a network device or a UE. Each of apparatuses 210 and 220 may include Figure 2 at least some of the illustrated components, such as processors 212 and 222. Each of apparatuses 210 and 220 may also include one or more other components that are not relevant to the solution proposed in the present invention (such as an external power source, a display device, and / or a user interface device). Therefore, for the sake of brevity, such components of apparatuses 210 and 220 are neither Figure 2 shown nor described below.

[0031] On the one hand, each of the processors 212 and 222 may be implemented in the form of one or more single-core processors, one or more multi-core processors, or one or more CISC processors. That is, although the present invention may use the singular term "processor" to denote the processors 212 and 222, according to the present invention, each of the processors 212 and 222 may include multiple processors in some embodiments and a single processor in other embodiments. On the other hand, each of the processors 212 and 222 may be implemented in the form of hardware (and firmware, optionally) having electronic components, where the electronic components include, but are not limited to, one or more transistors, one or more diodes, one or more capacitors, one or more resistors, one or more inductors, one or more memristors, and / or one or more varactors, and the above electronic components may be configured and arranged to achieve a specific purpose according to the present invention. In other words, in at least some embodiments, each of the processors 212 and 222 may be a dedicated machine specifically designed, arranged, and configured to perform specific tasks according to various embodiments of the present invention.

[0032] In some embodiments, the device 210 may also include a transceiver 216, which may be coupled to the processor 212 and is capable of wirelessly transmitting and receiving data. In some embodiments, the transceiver 216 is capable of wirelessly communicating with different types of wireless networks of different radio access technologies (RATs). In some embodiments, the transceiver 216 may be equipped with multiple antenna ports (not shown), such as four antenna ports. That is, the transceiver 216 may be equipped with multiple transmit antennas and multiple receive antennas for multiple-input multiple-output (MIMO) wireless communication. In some embodiments, the device 220 may also include a transceiver 226, which may be coupled to the processor 222 and is capable of wirelessly transmitting and receiving data. In some embodiments, the transceiver 226 is capable of wirelessly communicating with different types of wireless networks or UEs of different RATs. In some embodiments, the transceiver 226 may be equipped with multiple antenna ports (not shown), such as four antenna ports. That is, the transceiver 226 may be equipped with multiple transmit antennas and multiple receive antennas for MIMO wireless communication.

[0033] In some embodiments, the device 210 may further include a storage medium 214, which can be coupled to the processor 212, and can be accessed by the processor 212 and store data therein. In some embodiments, the device 220 may further include a storage medium 224, which can be coupled to the processor 222, and can be accessed by the processor 222 and store data therein. Each of the storage medium 214 and the storage medium 224 may include a random access memory (RAM), such as a dynamic random access memory (DRAM), a static random access memory (SRAM), a thyristor random access memory (T-RAM), and / or a zero-capacitor random access memory (Z-RAM). Optionally or additionally, the storage medium 214 and the storage medium 224 may include a read-only memory (ROM), such as a mask ROM, a programmable ROM (PROM), an erasable programmable ROM (EPROM), and / or an electrically erasable programmable ROM (EEPROM). Optionally or additionally, each of the storage medium 214 and the storage medium 224 may include a non-volatile random access memory (NVRAM), such as a flash memory, a solid-state memory, a ferroelectric random access memory (FeRAM), a magnetoresistive random access memory (MRAM), and / or a phase-change memory.

[0034] In some embodiments, the storage medium may store program instructions, which when executed by the processor, may cause the processor to perform the steps for the wireless communication method in the present invention.

[0035] Each of the devices 210 and 220 may be a communication entity capable of communicating with each other using the solution proposed in the present invention. The following description may take the device 210 as a UE (such as UE 110) and the device 220 as a network node (such as network node 125) of a wireless network (such as wireless network 120), but this is only exemplary and not restrictive.

[0036] In one aspect of detecting RRC connection re - establishment without re - configuration in a mobile communication according to the present invention, the processor 212 of the apparatus 210 may re - establish an RRC connection with a wireless network via the transceiver 216. For example, the processor 212 may trigger an RRC connection with the apparatus 220 based on multiple conditions, where the above - mentioned conditions may be such as RLF, re - configuration failure, handover failure, integrity check (such as checksum) error, and 4G handover failure. In addition, when the RRC connection re - establishment is completed, the processor 212 may detect via the transceiver 216 whether a type of radio bearer service is restored. Additionally, in response to detecting that the type of radio bearer service is not restored, the processor 212 may restore the type of radio bearer service via the transceiver 216.

[0037] In some embodiments, the type of radio bearer service includes SRB2 service or DRB service.

[0038] In some embodiments, when detecting whether a type of radio bearer service is restored, the processor 212 may detect by using one or more of a plurality of detection mechanisms, where the plurality of detection mechanisms include: an upper - layer - driven detection mechanism; a timer - driven detection mechanism; and a lower - layer - driven detection mechanism.

[0039] In some embodiments, the upper - layer - driven detection mechanism may include monitoring one or more of a plurality of services at the application layer or non - access stratum to determine whether the type of radio bearer service is restored when the RRC connection re - establishment is completed. In some embodiments, the plurality of services include evolved packet system mobility management service, evolved packet system session management service, application service, and long - term evolution voice bearer service.

[0040] In some embodiments, the timer - driven detection mechanism may include determining whether the type of radio bearer service is restored within a predefined time period based on a timer.

[0041] In some embodiments, the lower - layer - driven detection mechanism includes monitoring the occurrence of radio link failure at the RRC layer. In some embodiments, when monitoring the occurrence of radio link failure, the processor 212 may detect that the message decoding fails due to the signal level of the message being lower than a predefined threshold.

[0042] In some embodiments, when restoring the type of radio bearer service, the processor 212 may restore by using one or more of a plurality of restoration mechanisms, where the plurality of restoration mechanisms include: a first restoration mechanism, including releasing the RRC connection; a second restoration mechanism, including re - establishing a cell connection; and a third restoration mechanism, including resynchronizing with the wireless network.

[0043] In some embodiments, the first recovery mechanism may include: releasing the RRC connection to enter the idle mode in response to receiving a paging message (e.g., for a mobile-terminated call service); and re-establishing a connection with the wireless network to enter the connected mode from the idle mode to resume this type of radio bearer service.

[0044] In some embodiments, the second recovery mechanism may include: triggering a re-establishment with a first cell, where the first cell is associated with the wireless network; determining whether this type of radio bearer service is resumed when the re-establishment with the first cell is completed; and in response to determining that this type of radio bearer service is not resumed when the re-establishment with the first cell is completed, triggering a re-establishment with a second cell, where the second cell is associated with the wireless network.

[0045] In some embodiments, the third recovery mechanism may include triggering layer 2 control signaling or processes to resynchronize with the wireless network. In some embodiments, when triggering layer 2 control signaling or processes, the processor 212 may perform one or more of the following operations: triggering the evolved packet data convergence protocol or the enhanced relay link capacity status report; transmitting a buffer status report or a scheduling request to the wireless network; and triggering a random access process with the wireless network.

[0046] Exemplary processing

[0047] Figure 3 Exemplify exemplary processing 300 according to an embodiment of the present invention. Part or all of processing 300 may represent an aspect of implementing the various designs, concepts, solutions, systems, and methods described above. In particular, processing 300 may represent an aspect of concepts and solutions related to detecting the re-establishment of an RRC connection without reconfiguration in mobile communication. Processing 300 may include one or more operations, actions, or functions illustrated by one or more blocks 310, 320, and 330. Although illustrated as separate blocks, according to the required embodiments, the various blocks of processing 300 may be divided into additional blocks, combined into fewer blocks, or eliminated. Moreover, the blocks and sub-blocks of processing 300 may be executed in the Figure 3 order shown, or may also be executed in a different order. In addition, one or more blocks or sub-blocks of processing 300 may be executed alternately. Processing 300 may be implemented by devices 210 and 220 and any variations thereof. Processing 300 is described below in the context of device 210 as a UE (e.g., UE 110) and device 220 as a communication entity of the wireless network (e.g., network node or base station 125) of the wireless network 120, but this is merely exemplary and not restrictive. Processing 300 may start from block 310.

[0048] At 310, process 300 may include: The processor 212 of device 210 may re - establish an RRC connection with the wireless network via transceiver 216. Process 300 may proceed from 310 to 320.

[0049] At 320, process 300 may include: When the re - establishment of the RRC connection is complete, the processor 212 may detect via transceiver 216 whether a type of radio bearer service is restored. Process 300 may proceed from 320 to 330.

[0050] At 330, process 300 may include: In response to detecting that the type of radio bearer service is not restored, the processor 212 may restore the type of radio bearer service via transceiver 216.

[0051] In some embodiments, the type of radio bearer service includes SRB2 service or DRB service.

[0052] In some embodiments, when detecting whether a type of radio bearer service is restored, process 300 may include: The processor 212 may detect by using one or more of a plurality of detection mechanisms, where the plurality of detection mechanisms include: an upper - layer - driven detection mechanism; a timer - driven detection mechanism; and a lower - layer - driven detection mechanism.

[0053] In some embodiments, the upper - layer - driven detection mechanism may include monitoring one or more of a plurality of services at the application layer or non - access stratum to determine whether the type of radio bearer service is restored when the re - establishment of the RRC connection is complete. In some embodiments, the plurality of services include evolved packet system mobility management service, evolved packet system session management service, application service, and long - term evolution voice bearer service.

[0054] In some embodiments, the timer - driven detection mechanism may include determining whether the type of radio bearer service is restored within a predefined time period based on a timer.

[0055] In some embodiments, the lower - layer - driven detection mechanism includes monitoring the occurrence of radio link failure at the RRC layer. In some embodiments, when monitoring the occurrence of radio link failure, process 300 may include: The processor 212 may detect that message decoding fails due to the signal level of the message being lower than a predefined threshold.

[0056] In some embodiments, when restoring this type of radio bearer service, process 300 may include: the processor 212 may restore by utilizing one or more of a plurality of restoration mechanisms, where the plurality of restoration mechanisms include: a first restoration mechanism, including releasing the RRC connection; a second restoration mechanism, including reconstructing the cell connection; and a third restoration mechanism, including resynchronizing with the wireless network.

[0057] In some embodiments, the first restoration mechanism may include: in response to receiving a paging message (e.g., for a mobile terminated call service), releasing the RRC connection to enter the idle mode; and reconstructing the connection with the wireless network to enter the connected mode from the idle mode to restore this type of radio bearer service.

[0058] In some embodiments, the second restoration mechanism may include: triggering the reconstruction with a first cell, where the first cell is associated with the wireless network; determining whether this type of radio bearer service is restored when the reconstruction with the first cell is completed; and in response to determining that this type of radio bearer service is not restored when the reconstruction with the first cell is completed, triggering the reconstruction with a second cell, where the second cell is associated with the wireless network.

[0059] In some embodiments, the third restoration mechanism may include triggering layer 2 control signaling or processes to resynchronize with the wireless network. In some embodiments, when triggering layer 2 control signaling or processes, process 300 may include: the processor 212 may perform one or more of the following operations: triggering the evolved packet data convergence protocol or the enhanced relay link capacity status report; transmitting a buffer status report or a scheduling request to the wireless network; and triggering a random access process with the wireless network.

[0060] Figure 4 Illustrate exemplary process 400 according to embodiments of the present invention. Part or all of process 400 may represent an aspect of implementing the various designs, concepts, solutions, systems, and methods described above. In particular, process 400 may represent an aspect of concepts and solutions related to detecting RRC connection reconstruction without reconfiguration in mobile communications. Process 400 may include one or more operations, actions, or functions illustrated by one or more blocks 410, 420, and 430. Although illustrated as separate blocks, according to the required embodiments, the various blocks of process 400 may be divided into additional blocks, combined into fewer blocks, or eliminated. Moreover, the blocks and sub - blocks of process 400 may be arranged in Figure 4Execute in the order shown, or it can also be executed in a different order. In addition, one or more blocks or sub-blocks of process 400 can be executed alternately. Process 400 can be implemented by apparatuses 210 and 220 and any variations thereof. Process 400 is described below in the context of apparatus 210 as a UE (such as UE 110) and apparatus 220 as a communication entity (such as a network node or base station 125) of a wireless network (such as wireless network 120), but this is merely illustrative and not restrictive. Process 400 can start from block 410.

[0061] At 410, process 400 can include: The processor 212 of apparatus 210 reconstructs an RRC connection with the wireless network via transceiver 216. Process 400 can proceed from 410 to 420.

[0062] At 420, process 400 can include: When the reconstruction of the RRC connection is completed, the processor 212 detects via transceiver 216 whether the SRB2 service or the DRB service is restored, where detecting whether the SRB2 service or the DRB service is restored includes detecting by using one or more of a plurality of detection mechanisms, and the plurality of detection mechanisms includes an upper layer-driven detection mechanism, a timer-driven detection mechanism, and a lower layer-driven detection mechanism. Process 400 can proceed from 420 to 430.

[0063] At 430, process 400 can include: In response to detecting that the SRB2 service or the DRB service is not restored, the processor 212 restores the SRB2 service or the DRB service via transceiver 216, where restoring the SRB2 service or the DRB service includes restoring by using one or more of a plurality of restoration mechanisms, and the plurality of restoration mechanisms includes: a first restoration mechanism, including releasing the RRC connection; a second restoration mechanism, including reconstructing a cell connection; and a third restoration mechanism, including resynchronizing with the wireless network.

[0064] In some embodiments, the upper layer-driven detection mechanism can include: Monitoring one or more of a plurality of services at the application layer or non-access stratum to determine whether the SRB2 service or the DRB service is restored when the reconstruction of the RRC connection is completed, where the plurality of services can include evolved packet system mobility management service, evolved packet system session management service, application service, and long term evolution voice bearer service.

[0065] In some embodiments, the timer-driven detection mechanism includes: Determining whether the SRB2 service or the DRB service is restored within a predefined time period based on a timer.

[0066] In some embodiments, the lower layer-driven detection mechanism includes monitoring the occurrence of radio link failures at the RRC layer. In some embodiments, when monitoring the occurrence of radio link failures, the processor 212 may detect a decoding failure of a message due to the signal level of the message being lower than a predefined threshold.

[0067] In some embodiments, the first recovery mechanism may include: releasing the RRC connection to enter the idle mode in response to receiving a paging message (such as for a mobile-terminated call service); and re-establishing a connection with the wireless network to enter the connected mode from the idle mode to resume the SRB2 service or the DRB service.

[0068] In some embodiments, the second recovery mechanism may include: triggering a re-establishment with a first cell, where the first cell is associated with the wireless network; determining whether the SRB2 service or the DRB service is resumed when the re-establishment with the first cell is completed; and triggering a re-establishment with a second cell, where the second cell is associated with the wireless network, in response to determining that the SRB2 service or the DRB service is not resumed when the re-establishment with the first cell is completed.

[0069] In some embodiments, the third recovery mechanism may include: triggering layer 2 control signaling or processes to re-synchronize with the wireless network. In some embodiments, when triggering layer 2 control signaling or processes, the processor 212 may perform one or more of the following operations: triggering the evolved packet data convergence protocol or the enhanced relay link capacity status report; transmitting a buffer status report or a scheduling request to the wireless network; and triggering a random access process with the wireless network.

[0070] Additional Notes

[0071] The subject matter described in this invention sometimes illustrates different components being included in or connected to different other components. It should be understood that such described architectures are merely exemplary, and in fact, other architectures that can achieve the same functions can also be implemented. Conceptually, any arrangement of components that achieve the same function is effectively "associated" to achieve the desired function. Therefore, regardless of the architecture or intermediate components, any two components combined here to achieve a specific function can be regarded as being "associated" with each other to achieve the desired function. Similarly, any two components so associated can also be regarded as being "operably connected" or "operably coupled" to each other to achieve the desired function, and any two components that can be so associated can also be regarded as being "operably coupleable" to each other to achieve the desired function. Specific examples of operably coupleable include, but are not limited to, physically matching and / or physically interacting components and / or wirelessly interacting and / or wirelessly interactive components and / or logically interacting and / or logically interactive components.

[0072] Moreover, regarding the use of substantially any plural and / or singular terms in the present invention, those skilled in the art can appropriately convert the plural to the singular and / or the singular to the plural according to the context and / or application. For clarity, the present invention may explicitly set forth various singular / plural permutations.

[0073] In addition, those skilled in the art should understand that, generally speaking, the terms used in the present invention, especially the terms used in the claims (such as the subject matter of the claims), are usually intended to be "open" terms. For example, the term "comprising" should be interpreted as "comprising but not limited to", the term "having" should be interpreted as "having at least", the term "including" should be interpreted as "including but not limited to", etc. Those skilled in the art should also understand that if the intention is to refer to a specific number of claim statements, such intention will be explicitly stated in the claims, and in the absence of such a statement, there is no such intention. For example, for the sake of assisting understanding, the claims may include the use of introductory phrases such as "at least one" and "one or more" to introduce claim statements. However, the use of such phrases should not be construed as implying that introducing a claim statement by the indefinite article "a" or "an" limits any particular claim containing the introduced claim statement to only those embodiments containing only one such statement, even when the same claim includes an introductory phrase such as "one or more" or "at least one" as well as an indefinite article such as "a" or "an" (e.g., "a" and / or "an" should be interpreted as meaning "at least one" or "one or more"); the same applies to the use of the definite article introducing claim recitations. Additionally, even if the specific number of the introduced claim statements is explicitly stated, those skilled in the art should recognize that such statements should be interpreted as meaning at least the stated number (e.g., the statement "two items" without other modifiers means at least two items or two or more items). Furthermore, in instances where a usage such as "at least one of A, B, and C, etc." is used, generally such a construction is intended to convey the meaning understood by those skilled in the art. For example, a "system having at least one of A, B, and C" will include, but not be limited to, systems having only A, only B, only C, having A and B, having A and C, having B and C, and / or having A, B, and C, etc. In instances where a usage such as "at least one of A, B, or C, etc." is used, generally such a construction is intended to convey the meaning understood by those skilled in the art. For example, a "system having at least one of A, B, or C" will include, but not be limited to, systems having only A, only B, only C, having A and B, having A and C, having B and C, and / or having A, B, and C, etc. Those skilled in the art should also understand that almost any conjunctive and / or phrase presenting two or more alternatives, whether in the specification, claims, or drawings, should be understood to include the possibility of one, any one, or both. For example, the term "A or B" should be understood to include the possibility of "A" or "B" or "A and B".

[0074] It should be understood from the foregoing statements that the present invention has described various embodiments of the present invention for illustrative purposes, and various modifications can be made without departing from the scope and essence of the present invention. Accordingly, the various embodiments disclosed by the present invention are not intended to be limiting, and the true scope of protection and essence are indicated by the claims.

Claims

1. A method for wireless communication, comprising: reconstructing, by a processor of a device, a radio resource control connection with a wireless network; when the reconstruction of the radio resource control connection is completed, detecting, by the processor, whether a type of radio bearer service is restored; and in response to detecting that the type of radio bearer service is not restored, restoring, by the processor, the type of radio bearer service, wherein, restoring the type of radio bearer service includes restoring by using a second restoration mechanism, and the second restoration mechanism includes: triggering reconstruction with a first cell, where the first cell is associated with the wireless network; determining whether the type of radio bearer service is restored when the reconstruction with the first cell is completed; and in response to determining that the type of radio bearer service is not restored when the reconstruction with the first cell is completed, triggering reconstruction with a second cell, the second cell being associated with the wireless network.

2. The method for wireless communication according to claim 1, wherein, the type of radio bearer service includes a signaling radio bearer type 2 service or a data radio bearer service.

3. The method for wireless communication according to claim 1, wherein, detecting whether a type of radio bearer service is restored includes detecting by using one or more of a plurality of detection mechanisms, and the plurality of detection mechanisms includes: an upper layer-driven detection mechanism; a timer-driven detection mechanism; and a lower layer-driven detection mechanism.

4. The method for wireless communication according to claim 3, wherein, the upper layer-driven detection mechanism includes: monitoring one or more of a plurality of services at an application layer or a non-access stratum to determine whether the type of radio bearer service is restored when the reconstruction of the radio resource control connection is completed.

5. The method for wireless communication according to claim 4, wherein, the plurality of services includes an evolved packet system mobility management service, an evolved packet system session management service, an application service, and a long term evolution voice bearer service.

6. The method for wireless communication according to claim 3, wherein, the timer-driven detection mechanism includes: determining, based on a timer, whether the type of radio bearer service is restored within a predefined time period.

7. The method for wireless communication according to claim 3, wherein, the lower layer-driven detection mechanism includes: monitoring the occurrence of a radio link failure at a radio resource control layer.

8. The method for wireless communication according to claim 7, wherein, monitoring the occurrence of the radio link failure includes: detecting that decoding of the message fails due to a signal level of the message being lower than a predefined threshold.

9. The method for wireless communication according to claim 1, wherein, restoring the type of radio bearer service further includes restoring by using one or more of a plurality of restoration mechanisms, and the plurality of restoration mechanisms includes: a first restoration mechanism, including releasing the radio resource control connection; and A third recovery mechanism, including resynchronizing with the wireless network again.

10. The method for wireless communication according to claim 9, wherein, the first recovery mechanism includes: responding to a paging message for a mobile-terminated call service, releasing the radio resource control connection to enter the idle mode; and reestablishing a connection with the wireless network to enter the connected mode from the idle mode to resume this type of radio bearer service.

11. The method for wireless communication according to claim 9, wherein, the third recovery mechanism includes: triggering layer 2 control signaling or processes to resynchronize with the wireless network again.

12. The method for wireless communication according to claim 11, wherein, the triggering of layer 2 control signaling or processes includes performing one or more of the following operations: triggering the evolved packet data convergence protocol or the enhanced relay link capacity status report; transmitting a buffer status report or a scheduling request to the wireless network; and triggering a random access process with the wireless network.

13. A method for wireless communication, including: reestablishing a radio resource control connection with a wireless network by a processor of a device; when the reestablishment of the radio resource control connection is completed, detecting by the processor whether a signaling radio bearer type 2 service or a data radio bearer service is resumed; and in response to detecting that the signaling radio bearer type 2 service or the data radio bearer service is not resumed, resuming the signaling radio bearer type 2 service or the data radio bearer service by the processor, wherein, detecting whether the signaling radio bearer type 2 service or the data radio bearer service is resumed includes detecting by using one or more of a plurality of detection mechanisms, wherein the plurality of detection mechanisms includes an upper layer-driven detection mechanism, a timer-driven detection mechanism, and a lower layer-driven detection mechanism, wherein, resuming the signaling radio bearer type 2 service or the data radio bearer service includes resuming by using one or more of a plurality of recovery mechanisms, wherein the plurality of recovery mechanisms includes: a first recovery mechanism, including releasing the radio resource control connection; a second recovery mechanism, including reestablishing a cell connection by using radio resource control reestablishment to resume a signaling radio bearer type 1 service; and a third recovery mechanism, including resynchronizing with the wireless network again.

14. The method for wireless communication according to claim 13, wherein, the upper layer-driven detection mechanism includes: monitoring one or more of a plurality of services at the application layer or the non-access stratum to determine whether the signaling radio bearer type 2 service or the data radio bearer service is resumed when the reestablishment of the radio resource control connection is completed, wherein, the plurality of services includes evolved packet system mobility management service, evolved packet system session management service, application service, and long term evolution voice bearer service.

15. The method for wireless communication according to claim 13, wherein, the timer-driven detection mechanism includes: Determine whether the signaling radio bearer type 2 service or the data radio bearer service is restored within a predefined time period based on a timer.

16. The method for wireless communication according to claim 13, wherein, the lower layer-driven detection mechanism includes: monitoring the occurrence of a radio link failure at the radio resource control layer, wherein, monitoring the occurrence of the radio link failure includes detecting that the decoding of the message fails due to the signal level of the message being lower than a predefined threshold.

17. The method for wireless communication according to claim 13, wherein, the first recovery mechanism includes: releasing the radio resource control connection to enter the idle mode in response to receiving a paging message for a mobile-terminated call service; and re-establishing a connection with the wireless network to enter the connected mode from the idle mode to restore the signaling radio bearer type 2 service or the data radio bearer service.

18. The method for wireless communication according to claim 13, wherein, the second recovery mechanism further includes: triggering the reconstruction with a first cell, where the first cell is associated with the wireless network; determining whether the signaling radio bearer type 2 service or the data radio bearer service is restored when the reconstruction with the first cell is completed; and triggering the reconstruction with a second cell in response to determining that the signaling radio bearer type 2 service or the data radio bearer service is not restored when the reconstruction with the first cell is completed, where the second cell is associated with the wireless network.

19. The method for wireless communication according to claim 13, wherein, the third recovery mechanism includes: triggering layer 2 control signaling or processes to resynchronize with the wireless network, wherein, triggering the layer 2 control signaling or processes includes performing one or more of the following operations: triggering the evolved packet data convergence protocol or the enhanced relay link capacity status report; transmitting a buffer status report or a scheduling request to the wireless network; and triggering a random access process with the wireless network.

20. An apparatus for wireless communication, comprising: a processor, which, when executing program instructions stored in a storage medium, performs the steps of the method for wireless communication according to any one of claims 1-19.

21. A storage medium storing program instructions, which, when executed by a processor, cause the processor to perform the steps of the method for wireless communication according to any one of claims 1-19.

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