Capability-based terminal operation method and device

Abstract

A capability-based terminal operation method and apparatus in a wireless communication system are provided. The terminal may receive a master information block including first blocking information. After receiving the master block, the terminal may receive a system information block 1 including the second blocking information and the third blocking information. Further, the terminal may treat the first cell as an acceptable cell based on the first blocking information, the second blocking information, and the third blocking information.

Description

Technical Field

[0001] This disclosure relates to wireless communication systems applicable to 4G, 5G and 6G. Background Technology

[0002] With the continuous development of mobile communication technology, the transition from 4G to 5G has brought significant improvements to all aspects of wireless communication. These advancements are designed to meet the growing demands of modern applications, such as high-speed mobile broadband, massive connectivity for Internet of Things (IoT) devices, and ultra-reliable low-latency communication. Key areas of 5G development can be categorized into enhanced mobile broadband (eMBB), massive machine-type communication (mMTC), and ultra-reliable low-latency communication (URLLC), each focusing on addressing different use cases and needs that 4G technology struggles to meet.

[0003] Enhanced Mobile Broadband (eMBB) In the 4G era, Long-Term Evolution (LTE) technology provided high-speed mobile broadband, with peak download speeds reaching up to 1 Gbps. While this met the demands of high-definition video streaming, mobile gaming, and other data-intensive services, the need for even higher speeds and greater data capacity spurred further innovation. 5G addresses these challenges by offering download speeds of up to 20 Gbps, supporting new applications such as 4K / 8K video streaming, virtual reality (VR), augmented reality (AR), and massive data transmission. By introducing technologies such as massive MIMO, beamforming, and the use of millimeter-wave bands, 5G is able to deliver these enhanced capabilities to meet the ever-increasing demand for mobile broadband.

[0004] Massive Machine Type Communications (mMTC) The emergence of the Internet of Things (IoT) has created a massive demand for connected devices. However, 4G LTE technology is not optimized for large-scale device connectivity because it primarily focuses on interpersonal communication. Furthermore, 4G has limitations in energy efficiency, scalability, and the ability to handle a large number of connected devices simultaneously. 5G addresses these issues by introducing massive machine-type communication (mMTC), supporting millions of connected devices while achieving minimal power consumption and long battery life. By leveraging Low-Power Wide-Area Networks (LPWAN) and network slicing technologies, 5G ensures efficient connectivity for large-scale IoT deployments, including large-scale IoT ecosystems in smart cities, agriculture, healthcare, and more.

[0005] Ultra-Reliable Low-Latency Communications (URLLC) While 4G networks offer low-latency mobile broadband, they are not optimized for ultra-reliable and real-time communication, which is crucial for applications such as autonomous driving, remote surgery, and industrial automation. The necessity of ultra-reliable low-latency communication (URLLC), requiring near-instantaneous response times, has spurred the development of related technologies in 5G. In 5G, latency is reduced to as low as 1 millisecond, enabling real-time communication and control. This advancement is critical for applications requiring immediate decision-making, such as autonomous vehicles relying on real-time vehicle-to-vehicle and vehicle-to-infrastructure communication, and remote medical surgery and industrial automation systems requiring precise, real-time control.

[0006] These developments have made 5G a key technology that will transform how industries operate and how society interacts with the digital world. The continued evolution from 4G to 5G represents a significant leap forward in enabling new applications, improving network efficiency, and enhancing user experience.

[0007] Looking ahead, 6G is expected to further expand the capabilities of 5G, focusing on higher speeds, superior reliability, and the integration of advanced technologies such as artificial intelligence (AI) and holographic communications. 6G is anticipated to enable more immersive and seamless experiences, such as truly ubiquitous connectivity, advanced immersive technologies like mixed reality (XR), and autonomous systems operating in real-time with zero latency. The evolution from 4G to 5G, and ultimately to 6G, highlights the continuous advancement of wireless communication technologies and their increasingly important role in shaping the future of the digital world. Summary of the Invention

[0008] This disclosure provides a method and apparatus for efficiently operating in a wireless communication system based on terminal capabilities.

[0009] According to an embodiment, a method for operating a terminal in a wireless communication system can be provided. The terminal method may include receiving a main information block containing first blocking information, and after receiving the main information block, receiving a system information block 1 containing second blocking information and third blocking information. The terminal method may further include considering a first cell as an acceptable cell based on the first blocking information, the second blocking information, and the third blocking information.

[0010] According to another embodiment, a terminal for operating in a wireless communication system can be provided. The terminal may include a processor configured to perform the following operations: receive a master information block containing first barring information, and after receiving the master information block, receive system information block 1 containing second and third barring information; and, based on the first, second, and third barring information, consider a first cell as an acceptable cell.

[0011] The first blocking information can indicate that the first cell is not blocked, the second blocking information can indicate that the first cell is blocked, and the third blocking information can indicate that the first cell allows emergency services.

[0012] The emergency services may include emergency calls.

[0013] The acceptable cells can support Earthquake and Tsunami Warning System (ETWS) and Commercial Mobile Alert System (CMAS) notifications.

[0014] The terminal can switch from the first cell to the second cell and can send terminal capability information related to self-organizing network (SON) parameters through the second cell. Here, SON parameters may include a first parameter related to connection establishment failure and a second parameter related to radio link failure.

[0015] Meanwhile, the second blocking information can be terminal-specific.

[0016] According to embodiments of this disclosure, efficient operation can be performed in a wireless communication system based on the capabilities of the terminal. Attached Figure Description

[0017] Figure 1 A wireless communication system is shown.

[0018] Figure 2 The UE state machine and state transitions in NR are shown.

[0019] Figure 3 The process of acquiring system information is illustrated.

[0020] Figure 4 The process of terminal capability transmission is illustrated.

[0021] Figure 5 The process between a terminal and a base station according to one embodiment of the present disclosure is illustrated.

[0022] Figure 6 A process between a terminal and a base station according to another embodiment of this disclosure is illustrated.

[0023] Figure 7 This is a block diagram illustrating an apparatus according to an embodiment of the present disclosure. Detailed Implementation

[0024] The technical terms used in this specification are intended to describe specific embodiments and should not be construed as limiting. Unless otherwise defined, these terms should be interpreted according to common understanding of those skilled in the art and should not be overly broad or narrow. If a term fails to fully represent the spirit of this disclosure, it should be understood as the most accurate technical term recognized by those skilled in the art.

[0025] The forward slash ( / ) or comma used in this specification can mean "and / or". For example, "A / B" can mean "A and / or B", that is, it can mean "A only", "B only", or "both A and B".

[0026] Figure 1 A wireless communication system is shown.

[0027] refer to Figure 1NR wireless communication systems can be classified into 5G core network (5GC) and next-generation radio access network (NG-RAN). NG-RAN can include base stations (gNB and / or ng-eNB) that provide user plane and control plane protocol termination to the terminal UE (user equipment). Next-generation Node B (gNB) provides NR user plane and control plane protocol termination to the terminal, and next-generation evolved Node B (ng-eNB) provides evolved universal terrestrial radio access (E-UTRA) user plane and control plane protocol termination to the terminal UE. The terminal UE can be fixed or mobile and can be referred to by other terms such as mobile station (MS), user terminal (UT), subscriber station (SS), mobile terminal (MT), wireless device, etc. A base station (gNB and / or ng-eNB) can be a fixed station that communicates with a terminal UE, and can also be referred to as another term such as base transceiver system (BTS), access point, etc.

[0028] Base stations (gNB and / or ng-eNB) can connect to each other via the Xn interface and can connect to the 5G core network (5GC) via the NG interface. Specifically, base stations (gNB and / or ng-eNB) can connect to the access and mobility management function (AMF) via the NG-C interface and to the user plane function (UPF) via the NG-U interface.

[0029] Figure 2 The UE state machine and state transitions in NR are shown.

[0030] When an RRC connection has been established, the UE is in the RRC_CONNECTED state or the RRC_INACTIVE state. If this is not the case, i.e., if no RRC connection has been established, the UE is in the RRC_IDLE state. The RRC state can be further characterized as follows.

[0031] 1. RRC_IDLE: - UE-specific DRX (Discontinuous Reception) can be configured by the upper layer; - At the lower layer, the UE can be configured as a DRX for PTM (Point to Multipoint) transmissions for MBS (Multicast / Broadcast Services) broadcasts; - Controlled UE mobility based on network configuration; - The UE performs the following: i) Monitor short messages sent via DCI (Downlink Control Information) using P-RNTI (Paging-RNTI); ii) Use 5G-S-TMSI (5G-Serving-Temporary Mobile Subscriber Identity) to monitor the CN (Core Network) paging channel unless the UE acts as an L2 (Layer 2) U2N (UE-to-Network) remote UE; iii) If configured by the upper layer for MBS multicast reception, then use TMGI (Temporary Mobile Group Identity) to monitor the CN paging channel; iv) Perform neighboring cell measurements and cell (re)selection; v) Perform measurements on L2 U2N trunk UEs and trunk (re)selections; vi) Obtain system information and send an SI request (if configured); vii) Recording of available measurements is performed together with the location and time of the UE used for the recorded measurement configuration; viii) Perform idle / inactive measurements on the UE configured for idle / inactive measurements; ix) If configured by the upper layer for MBS broadcast reception, then obtain MCCH change notifications and MBS broadcast control information and data.

[0032] 2. RRC_INACTIVE: - UE-specific DRX can be configured by the upper layer or the RRC layer; - At lower layers, the UE can be configured as a DRX for PTM transmissions for MBS broadcast and / or a DRX for PTM transmissions for MBS multicast; - Controlled UE mobility based on network configuration; - The UE stores the UE's inactive Access Stratum (AS) context; - RAN-based notification areas are configured by the RRC layer; - Unicast data and / or signaling transmission with the UE via radio bearers configured for SDT; - The UE performs the following: i) Monitor short messages sent via DCI using P-RNTI; ii) While the T319a is running, monitor the control channel associated with the shared data channel to determine whether data has been scheduled; iii) When T319a is not running, monitor the paging channels for CN paging using 5G-S-TMSI and RAN paging using fullI-RNTI (full Inactive RNTI), unless the UE is acting as an L2 U2N remote UE; iv) If configured by the upper layer for MBS multicast reception and the T319a is not operational, then use TMGI to monitor the paging channel; v) Perform neighboring cell measurements and cell (re)selection; vi) Perform measurements on L2 U2N trunk UEs and trunk (re)selections; vii) Periodically perform updates to the RAN-based notification area, and perform updates when moving outside the configured RAN-based notification area; viii) When obtaining system information and not in the process of SDT (Small Data Transmission), an SI (System Information) request can be sent (if configured). ix) When the SDT process is not in progress, record the available measurements along with the UE’s location and time for the recorded measurement configuration; x) When the SDT process is not in progress, perform idle / inactive measurements on the UE configured for idle / inactive measurements; xi) If configured by the upper layer for MBS broadcast reception, then obtain MCCH (MBS Control Channel) change notifications as well as MBS broadcast control information and data; xii) If configured for MBS multicast reception in RRC_INACTIVE, then obtain the multicast MCCH change notification as well as MBS multicast control information and data; xiii) Send the SRS (Sounding Reference Signal) for positioning.

[0033] 3. RRC_CONNECTED: - The UE stores the UE AS (Access Stratum) context; - Send and receive unicast data with the UE; - Transmit MBS multicast data to the UE; - At lower layers, the UE can be configured as a UE-specific DRX; - At lower layers, the UE can be configured as a DRX for PTM transmission of MBS broadcast and / or a DRX for MBS multicast; - At lower levels, the UE can be configured for cell-specific DTX / DRX; - For UEs that support CA (Carrier Aggregation), use one or more SCells (Secondary Cells) aggregated with SpCell (Special Cell) for bandwidth expansion; - For UEs that support DC (Dual Connectivity), a secondary cell group (SCG) aggregated with the master cell group (MCG) is used for bandwidth expansion; - Controlled network mobility within NR to / from E-UTRA and to UTRA-FDD; - Network-controlled mobility (path handover) between the serving cell and the L2 U2N relay UE, or vice versa, or between the source L2 U2N relay UE and the target L2 U2N relay UE; - Network control MP (Multi-Path) operation; - The UE performs the following: i) When configured, monitor short messages sent via DCI using P-RNTI; ii) Monitor the control channel associated with the shared data channel to determine whether data has been scheduled; iii) Provide channel quality and feedback information; iv) Perform neighboring cell and / or L2 U2N relay measurements and report measurements; v) Obtain system information; vi) Perform immediate MDT measurements in conjunction with available location reports; vii) If configured by the upper layer for MBS broadcast reception, then obtain MCCH change notifications and MBS broadcast control information and data.

[0034] Figure 3 The process of acquiring system information is illustrated.

[0035] System information (SI) can consist of a master information block (MIB), system information block 1 (SIB1), and multiple system information blocks (SIBs). The MIB contains the cell's blocking status information and the basic physical layer information required for subsequent system information reception. The MIB is periodically transmitted via the broadcast channel (BCH) (S301). SIB1 defines the scheduling of other system information blocks and contains the information required for initial access. SIB1 is also known as the Remaining Minimum System Information (RMSI) and is periodically broadcast via the downlink shared channel (DL-SCH) or transmitted individually to the UE in the RRC_CONNECTED state via the DL-SCH (S302). The remaining SIBs can be periodically broadcast via the DL-SCH, or broadcast on-demand, or transmitted individually to the UE in the RRC_CONNECTED state via the DL-SCH (S303).

[0036] Figure 4 The process of terminal capability transmission is illustrated.

[0037] When a base station (gNB) requires (additional) radio access capability information for a terminal UE, it can initiate a procedure using a terminal UE in the RRC_CONNECTED state as the target. The base station should only retrieve the terminal UE's capability information after access stratum (AS) security activation. The base station must not forward terminal UE capability information retrieved before AS security activation to the core network (CN). (Reference) Figure 4 The system transmits a UE capability enquiry message to request radio access capability information of the UE's NR and other radio access technologies (S401). In response to the base station's request, a UE capability information message is transmitted to send the UE's radio access capabilities (S402).

[0038] <Reduced Capability (RedCap) and Enhanced Reduced Capability (eRedCap) NR Devices> RedCap UEs are simplified and designed to be less complex than non-RedCap UEs. RedCap UEs must support a maximum UE channel bandwidth of 20 MHz in FR1 and a maximum UE channel bandwidth of 100 MHz in FR2. eRedCap UEs are additionally scaled-down devices designed to be less complex than RedCap UEs. eRedCap UEs must support reduced downlink / uplink (DL / UL) peak data rates of 10 Mbps, regardless of whether a simplified baseband bandwidth of 5 MHz is supported in FR1 for unicast physical downlink shared channel (PDSCH) / physical uplink shared channel (PUSCH).

[0039] RedCap UEs can be selectively identified by the network via MSG1 / MSGA (PRACH slots or PRACH preambles) from MSG3 (Message 3) / MSGA (Message A) during random access. eRedCap UEs can be selectively identified by the network via MSG1 from MSG3 / MSGA via the eRedCap-specific LCID. For RedCap UEs identified via MSG1 / MSGA, RedCap-specific random access configurations can be configured by the network. For eRedCap UEs identified via MSG1, eRedCap-specific random access configurations can be configured by the network. For (e)RedCap UEs identified via MSG3 / MSGA, identification is performed using the dedicated LCID indicated by the Common Control Channel (CCCH) identifier (CCCH or CCCH1), regardless of whether the network has configured (e)RedCap-specific random access configurations.

[0040] (e)RedCap UEs with one or two receive branches can be individually permitted via system information. Furthermore, (e)RedCap UEs operating in half-duplex FDD mode can also be permitted via system information. RedCap-specific initial frequency restriction information (IFRI) can be provided in SIB1; if this information is missing, RedCap UE access is not permitted. eRedCap-specific IFRI can be provided in SIB1; if this information is missing, eRedCap UE access is not permitted. Frequency information regarding permitted (e)RedCap UE access can be provided via system information.

[0041] Additionally, if the cell is blocked, the UE cannot make emergency calls. The network may allow RedCap UEs to access the cell, but may block their access depending on whether the RedCap UE is using a 1Rx or 2Rx branch.

[0042] If a cell allows RedCap UEs to access, but these UEs consider the cell to be blocked from access based on whether they support 1Rx or 2Rx, or neither, it may be beneficial to introduce an exception that would allow them to make emergency calls or receive emergency information broadcasts (if possible) while the cell allows RedCap UEs to access.

[0043] This invention introduces a mechanism that allows RedCap UEs to access the cell to make emergency calls or receive emergency information broadcasts (if possible) when the cell allows RedCap UEs to access the cell but these UEs believe the cell is blocked based on whether they support 1Rx or 2Rx.

[0044] The following logic can be added to the UE cell selection / reselection procedure.

[0045] If a cell supports a RedCap UE and is not blocked for any reason other than due to 1Rx or 2Rx support, the RedCap UE may consider the cell acceptable (e.g., a cell for emergency calls), provided that the cell is identified as allowing its access via the relevant SIB1.

[0046] Furthermore, for the purpose of self-organizing networks (SON), connection establishment failure (CEF) and radio link failure (RLF) information reporting have been implemented without terminal capability signaling. However, RedCap UE functions were introduced later, therefore these CEF and RLF reporting functions should be considered mandatory for RedCap UEs. However, while some RedCap UEs may support CEF and RLF reporting functions, others may not; therefore, RedCap UEs need to perform capability signaling for CEF and RLF reporting functions.

[0047] Figure 5 The process between a terminal and a base station according to one embodiment of the present disclosure is illustrated.

[0048] like Figure 5 As shown, a terminal camps on a first cell and receives a master information block (MIB) including first barring information from a base station (S501). After receiving the MIB, it receives system information block 1 (SIB1) including second barring information and third barring information from the base station (S502). Then, based on the first, second, and third barring information, the terminal considers the first cell as an acceptable cell. The first barring information may indicate that the first cell is not blocked, the second barring information may indicate that the first cell is blocked, and the third barring information may indicate that emergency services are permitted in the first cell.

[0049] Emergency services may include emergency calls or emergency information broadcasts.

[0050] Acceptable cells can support Earthquake and Tsunami Warning System (ETWS) and Commercial Mobile Alert System (CMAS) notifications.

[0051] Meanwhile, the second blocking information can be terminal-specific, and the third blocking information can also indicate the permitted time (i.e., period or duration) for emergency services. After the permitted time expires, the terminal can consider the first cell as the blocked cell.

[0052] Figure 6 A process between a terminal and a base station according to another embodiment of this disclosure is illustrated.

[0053] like Figure 6 As shown, the terminal switches from the first cell to the second cell. Then, the terminal receives the Master Information Block (MIB), System Information Block 1 (SIB1), and other selective System Information Blocks (SIBs) from the base station through the second cell (S601-S603). In order to establish an RRC connection, the terminal and the base station execute the RRC connection procedure based on the received MIB, SIB1, and other selective SIBs.

[0054] After establishing an RRC connection, when the base station needs the terminal's radio access capability information, the base station can initiate a terminal capability transmission procedure for the terminal in the RRC_CONNECTED state. That is, the base station sends a terminal capability enquiry message to the terminal to request the terminal's radio access capability information (S604). In response to the terminal capability enquiry message, the terminal sends a terminal capability information message to the base station to transmit the requested terminal radio access capability information (S605). The terminal capability information can be associated with self-organizing network (SON) parameters. Here, SON parameters can include a first parameter related to connection establishment failure (CEF) and a second parameter related to radio link failure (RLF). The first parameter indicates whether the terminal supports storing and reporting connection establishment failure or connection recovery failure information in the UE Information Response message. The second parameter indicates whether the terminal supports storing and reporting radio link failure or handover failure information in the UE Information Response message. In other words, terminal capability information may include a first parameter related to CEF and a second parameter related to RLF and be transmitted to the base station.

[0055] The terminal described above can be (e) RedCap UE.

[0056] The disclosed content described so far can be implemented by various means. For example, this embodiment can be implemented by hardware, firmware, software, or a combination thereof. Specifically, the implementation will be described below with reference to the accompanying drawings.

[0057] Figure 7 This is a block diagram illustrating an apparatus according to an embodiment of the present disclosure.

[0058] refer to Figure 7 The wireless communication system may include a network 100a, a first device 100b, and a second device 100c.

[0059] Network 100a can be a base station, a network node, a device related to 5G services, or other devices related to the Fourth Industrial Revolution.

[0060] The first device 100b may be a transmitting terminal, a receiving terminal, a wireless device, a wireless communication device, a vehicle, a vehicle with autonomous driving capabilities, a connected car, an unmanned aerial vehicle (UAV), an artificial intelligence (AI) module, a robot, an augmented reality (AR) device, a virtual reality (VR) device, a mixed reality (MR) device, a holographic device, a public safety device, a machine-type communication (MTC) device, an Internet of Things (IoT) device, a medical device, a financial technology (FinTech) device (or financial device), a security device, a climate / environment device, a device related to 5G services, or other devices related to the Fourth Industrial Revolution.

[0061] The second device 100c may include a transmitting terminal, a receiving terminal, a wireless device, a wireless communication device, a vehicle, a vehicle with autonomous driving capabilities, a connected car, an unmanned aerial vehicle (UAV), an artificial intelligence (AI) module, a robot, an augmented reality (AR) device, a virtual reality (VR) device, a mixed reality (MR) device, a holographic device, a public safety device, a machine-type communication (MTC) device, an Internet of Things (IoT) device, a medical device, a financial technology (FinTech) device (or financial device), a security device, a climate / environment device, a device related to 5G services, or other devices related to the Fourth Industrial Revolution.

[0062] Network 100a may include at least one processor, such as control unit 1010a; at least one memory, such as memory 1020a; and at least one radio frequency unit, such as radio frequency unit 1030a. Control unit 1010a may be responsible for performing the aforementioned functions, processes, and / or methods. Control unit 1010a is capable of implementing one or more protocols. For example, control unit 1010a may execute and manage one or more layers of a radio interface protocol. Memory 1020a may be connected to control unit 1010a and may store various types of information and / or instructions. Radio frequency unit 1030a may be connected to control unit 1010a and is controlled to transmit and receive radio signals.

[0063] The first device 100b may include at least one processor (e.g., control unit 1010b), at least one memory (e.g., memory 1020b), and at least one radio frequency unit (e.g., radio frequency unit 1030b). Control unit 1010b may be responsible for performing the aforementioned functions, processes, and / or methods. Control unit 1010b is capable of implementing one or more protocols. For example, control unit 1010b may execute and manage one or more layers of a radio interface protocol. Memory 1020b may be connected to control unit 1010b and may store various types of information and / or instructions. Radio frequency unit 1030b may be connected to control unit 1010b and is controlled to transmit and receive radio signals.

[0064] The second device 100c may include at least one processor (e.g., control unit 1010c), at least one memory (e.g., memory 1020c), and at least one radio frequency unit (e.g., radio frequency unit 1030c). Control unit 1010c may be responsible for performing the aforementioned functions, processes, and / or methods. Control unit 1010c may be able to implement one or more protocols. For example, control unit 1010c may execute and manage one or more layers of a radio interface protocol. Memory 1020c may be connected to control unit 1010c and may store various types of information and / or instructions. Radio frequency unit 1030c may be connected to control unit 1010c and controlled to transmit and receive radio signals.

[0065] Memory 1020a, memory 1020b and / or memory 1020c can be connected inside or outside control unit 1010a, control unit 1010b and / or control unit 1010c respectively, and can be connected to other control units via various technologies such as wired or wireless connections.

[0066] Although preferred embodiments of the present disclosure have been described illustratively, the scope of the present disclosure is not limited to the specific embodiments only, and the present disclosure may be modified, altered or improved in various forms within the spirit of the present disclosure and within the categories written in the claims.

[0067] In the exemplary system described above, although the method has been described in the form of a series of steps or blocks, this disclosure is not limited to the order of the steps, and some steps may be performed in a different order than others or may be performed simultaneously with other steps. Furthermore, those skilled in the art will understand that the steps shown in the flowchart are not exclusive and may include other steps, or one or more steps of the flowchart may be deleted without affecting the scope of this disclosure.

[0068] The claims of this disclosure can be combined in various ways. For example, the technical features of the method claims of this disclosure can be combined to implement an apparatus, and the technical features of the apparatus claims of this disclosure can be combined to implement a method. Furthermore, the technical features of the method claims and the apparatus claims of this disclosure can be combined to implement an apparatus, and the technical features of the method claims and the apparatus claims of this disclosure can be combined to implement a method.

Claims

1. A method for operating a terminal in a wireless communication system, the method comprising the following steps: Receive the main information block containing the first blocking information; After receiving the main information block, receive system information block 1 containing the second and third blocking information; and Based on the first blocking information, the second blocking information, and the third blocking information, the first cell is considered an acceptable cell. in, The first blocking information indicates that the first cell has not been blocked. Wherein, the second blocking information indicates that the first cell is blocked, and The third blocking information indicates that the first cell allows emergency services.

2. The method according to claim 1, wherein, The emergency services include emergency calls.

3. The method according to claim 1, wherein, The acceptable community supports earthquake and tsunami early warning systems and commercial mobile alarm systems.

4. The method according to claim 1, further comprising the following steps: Switching from the first cell to the second cell; and The terminal capability information related to the self-organizing network parameters is sent through the second cell.

5. The method according to claim 4, wherein, The self-organizing network parameters include a first parameter related to connection establishment failure and a second parameter related to wireless link failure.

6. The method according to claim 1, wherein, The second blocking information is terminal-specific.

7. A terminal in a wireless communication system, comprising: The processor is configured to cause the terminal to perform the following operations: Receive the main information block containing the first blocking information; After receiving the main information block, receive system information block 1 containing the second and third blocking information; and Based on the first blocking information, the second blocking information, and the third blocking information, the first cell is considered an acceptable cell. The first blocking information indicates that the first cell has not been blocked. Wherein, the second blocking information indicates that the first cell is blocked, and The third blocking information indicates that the first cell allows emergency services.

8. The terminal according to claim 7, wherein, The emergency services include emergency calls.

9. The terminal according to claim 7, wherein, The acceptable community supports earthquake and tsunami early warning systems and commercial mobile alarm systems.

10. The terminal according to claim 7, wherein, The processor is also configured to cause the terminal to perform the following operations: Switching from the first cell to the second cell; and The terminal capability information related to the self-organizing network parameters is sent through the second cell.

11. The terminal according to claim 10, wherein, The self-organizing network parameters include a first parameter related to connection establishment failure and a second parameter related to wireless link failure.

12. The terminal according to claim 7, wherein, The second blocking information is terminal-specific.

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