Access control method and apparatus, communication device, and storage medium

Abstract

The embodiment of the disclosure provides an access control method and device, a communication device and a storage medium, wherein the access control method is executed by a UE, and the method comprises the following steps: in response to determining that a cell switching based on a random access channel (RACH-less) fails, performing cell switching based on a random access channel (RACH).

Description

Technical Field

[0001] This disclosure relates to, but is not limited to, the field of wireless communication technology, and particularly to an access control method, apparatus, communication device, and storage medium. Background Technology

[0002] During cell handover for User Equipment (UE), congestion often occurs due to a large number of UEs accessing the target cell, leading to access failure. Therefore, related technologies reduce congestion through methods such as random access channel-less (RACH-less) cell handover. However, in the event of RACH-less cell handover failure, it is not possible to effectively constrain UE behavior. Summary of the Invention

[0003] This disclosure provides an access control method, apparatus, communication device, and storage medium.

[0004] A first aspect of this disclosure provides an access control method, executed by a UE, the method comprising:

[0005] In response to the determination that cell handover based on RACH-less has failed, cell handover based on Random Access Channel-less (RACH) is performed.

[0006] A second aspect of this disclosure provides an access control method, executed by a network device, the method comprising:

[0007] Send a predetermined message to the UE; the predetermined message is used by the UE to perform a RACH-based cell handover in response to determining that the RACH-less cell handover has failed.

[0008] A third aspect of this disclosure provides an access control device applied to a UE, the device comprising:

[0009] The processing unit is configured to perform a RACH-based cell handover in response to determining that a RACH-less cell handover has failed.

[0010] A fourth aspect of this disclosure provides an access control device applied to a network device, the device comprising:

[0011] The sending unit is configured to send predetermined information to the UE; the predetermined information is used by the UE to perform RACH-based cell handover in response to determining that RACH-less cell handover has failed.

[0012] A fifth aspect of this disclosure provides a communication device, including a processor, a transceiver, a memory, and an executable program stored in the memory and capable of being executed by the processor, wherein the processor executes the access control method as described in any of the foregoing embodiments when running the executable program.

[0013] A sixth aspect of this disclosure provides a computer storage medium storing an executable program; the executable program, when executed by a processor, can implement the access control method described in any of the foregoing embodiments.

[0014] The access control method provided in this disclosure, executed by the UE, includes: in response to determining that a RACH-less cell handover has failed, performing a RACH-based cell handover. Thus, when the network device is configured to perform a RACH-less cell handover for the UE, the UE's behavior can be predetermined upon handover failure, such as performing a random access cell handover. This reduces the risk of being unable to access the target cell due to a RACH-less handover failure, thereby enabling random access-based cell handover.

[0015] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the embodiments of this disclosure. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments of the invention.

[0017] Figure 1 This is a schematic diagram illustrating the structure of a wireless communication system according to an exemplary embodiment;

[0018] Figure 2 This is a flowchart illustrating an access control method according to an exemplary embodiment;

[0019] Figure 3 This is a flowchart illustrating an access control method according to an exemplary embodiment;

[0020] Figure 4 This is a flowchart illustrating an access control method according to an exemplary embodiment;

[0021] Figure 5 This is a flowchart illustrating an access control method according to an exemplary embodiment;

[0022] Figure 6 This is a flowchart illustrating an access control method according to an exemplary embodiment;

[0023] Figure 7 This is a flowchart illustrating an access control method according to an exemplary embodiment;

[0024] Figure 8 This is a flowchart illustrating an access control method according to an exemplary embodiment;

[0025] Figure 9 This is a schematic diagram of the structure of an access control device according to an exemplary embodiment;

[0026] Figure 10 This is a schematic diagram of the structure of an access control device according to an exemplary embodiment;

[0027] Figure 11 This is a schematic diagram of the structure of a terminal according to an exemplary embodiment;

[0028] Figure 12 This is a schematic diagram of the structure of a communication device according to an exemplary embodiment. Detailed Implementation

[0029] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with those of the present invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the embodiments of the present invention.

[0030] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments disclosed herein. The singular forms “a,” “the,” and “the” used herein are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0031] It should be understood that although the terms first, second, third, etc., may be used to describe various information in embodiments of this disclosure, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, first information may also be referred to as second information without departing from the scope of embodiments of this disclosure, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to a determination."

[0032] Please refer to Figure 1 This illustration shows a schematic diagram of the structure of a wireless communication system provided in an embodiment of this disclosure. Figure 1As shown, the wireless communication system is a communication system based on cellular mobile communication technology. The wireless communication system may include: a number of terminals 11 and a number of access devices 12.

[0033] Terminal 11 can be a device that provides voice and / or data connectivity to a user. Terminal 11 can communicate with one or more core networks via a Radio Access Network (RAN). Terminal 11 can be an Internet of Things (IoT) terminal, such as a sensor device, a mobile phone (or "cellular" phone), and a computer with an IoT terminal. For example, it can be a fixed, portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted device. Examples include a station (STA), subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, remote terminal, access terminal, user device, user agent, user equipment (UE), or user terminal. Alternatively, terminal 11 can also be a device on an unmanned aerial vehicle (UAV). Alternatively, terminal 11 can also be a vehicle-mounted device, such as a vehicle computer with wireless communication capabilities, or a wireless communication device connected to an external vehicle computer. Alternatively, terminal 11 can also be a roadside device, such as a street light, traffic light, or other roadside device with wireless communication capabilities.

[0034] Access device 12 can be a network node device in a wireless communication system. This wireless communication system can be a 4G system (also known as Long Term Evolution, LTE); or it can be a 5G system (also known as a New Radio, NR, or 5G NR system). Alternatively, it can be the next generation after 5G. In this case, the access network in the 5G system can be called a New Generation Radio Access Network (NG-RAN). Alternatively, it can be an MTC system.

[0035] The access device 12 can be an evolved NB (eNB) used in a 4G system. Alternatively, the access device 12 can also be a gNB (gNB) using a centralized-distributed architecture in a 5G system. When the access device 12 adopts a centralized-distributed architecture, it typically includes a central unit (CU) and at least two distributed units (DUs). The central unit is equipped with a protocol stack of the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, and the Media Access Control (MAC) layer; the distributed units are equipped with a physical (PHY) layer protocol stack. This disclosure does not limit the specific implementation of the access device 12.

[0036] Access device 12 and terminal 11 can establish a wireless connection via a wireless air interface. In different implementations, the wireless air interface is a wireless air interface based on the fourth-generation mobile communication network technology (4G) standard; or, the wireless air interface is a wireless air interface based on the fifth-generation mobile communication network technology (5G) standard, such as a new air interface; or, the wireless air interface can also be a wireless air interface based on a next-generation mobile communication network technology standard based on 5G.

[0037] Optionally, the aforementioned wireless communication system may further include a network management device 13. A plurality of access devices 12 are respectively connected to the network management device 13. The network management device 13 may be a core network device in the wireless communication system, such as a Mobility Management Entity (MME) in an Evolved Packet Core (EPC). Alternatively, the network management device may be other core network devices, such as a Serving Gateway (SGW), a Public Data Network Gateway (PGW), a Policy and Charging Rules Function (PCRF), or a Home Subscriber Server (HSS). The implementation of the network management device 13 is not limited in this embodiment.

[0038] For example, terminal 11 can be a UE in this embodiment of the disclosure, such as including but not limited to: mobile phone, wearable device, vehicle terminal, roadside unit (RSU), smart home terminal, industrial sensing device and / or medical device, etc. Access device 12 or network management device 13 can be network device in this embodiment of the disclosure, such as base station or core network device, etc.

[0039] like Figure 2 As shown in the embodiments of this disclosure, an access control method is provided, executed by a UE, the method including:

[0040] S110: In response to the determination that RACH-less cell handover has failed, perform RACH-based cell handover.

[0041] In the embodiments of this disclosure, RACH-less cell handover can refer to a UE not performing a random access procedure during cell handover, such as skipping the random access procedure when handing over to the target cell, or not initiating a random access procedure. RACH-based cell handover can refer to a cell handover performed by the UE through random access, such as a cell handover that includes a random access procedure.

[0042] In one embodiment, step S110 may include: performing a RACH-based cell handover in response to determining that a RACH-less cell handover has failed, based on predetermined information sent by the network device. The predetermined information may be used to configure cell handover for the UE, and may include a first instruction, such as a handover instruction, a group handover instruction, or a Conditional Handover (CHO) handover instruction. The first instruction may be used to instruct the UE to perform a cell handover, for example, indicating a target cell or a target cell group. For example, the UE may handover to a primary cell within the target cell group indicated in the first instruction. For example, the first instruction may include configuration of the target cell and / or the target cell group.

[0043] In one embodiment, the network device may be a base station or a core network device, etc.

[0044] In one embodiment, the first instruction may instruct the UE to perform cell handover. For example, the first instruction may include first configuration information indicating RACH-less cell handover, which is used to instruct the UE to perform RACH-less cell handover, etc.

[0045] In one embodiment, the first configuration information may not be included in the first instruction. The first configuration information can be used to instruct the UE to perform RACH-less cell handover; for example, the first configuration information may also include configurations for RACH-less cell handover.

[0046] In one embodiment, the first instruction can be a handover instruction for a UE or a group handover instruction for the UE group to which the UE belongs. A UE group can contain at least two UEs, such as at least two UEs located within a predetermined range, meeting predetermined conditions, or having a predetermined association. When the handover instruction is a group handover instruction for a UE group, it can be used to instruct one or more UEs in the UE group to perform a cell handover. For example, upon receiving a group handover instruction, one or more UEs can perform a RACH-based cell handover in response to determining that a RACH-less cell handover has failed.

[0047] In one embodiment, before determining that the RACH-less cell handover has failed, the method further includes: starting a timer in response to determining that a RACH-less cell handover will be performed. The timer has a certain duration, and the UE can perform the RACH-less cell handover during the timer's operation, i.e., within the timer's duration.

[0048] In one embodiment, the UE can start a timer upon receiving a first instruction. For example, the UE starts a timer upon receiving a first instruction.

[0049] In one embodiment, the UE starts a timer within a predetermined time window after receiving the first instruction. The predetermined time window can be indicated to the UE by the network device, for example, through the first instruction or other signaling such as Downlink Control Information (DCI). Alternatively, the predetermined time window can also be determined by the UE based on predetermined rules or through negotiation with the network device.

[0050] For example, if the network device carries a predetermined time window length value, such as 10ms or 100ms, in the first instruction or other signaling, then the UE will start the timer within 10ms or 100ms after receiving the first instruction.

[0051] For example, the network device carries identification information or index information indicating a predetermined time window in the first instruction or other signaling. For instance, if the carried identification information is 'a', it indicates that the predetermined time window length is 10ms; if the carried identification information is 'b', it indicates that the predetermined time window is 100ms, etc. For example, the carried index information can indicate the determination of the predetermined time window length within a predetermined set, such as instructing the UE to determine that the target value in the predetermined set is the length of the predetermined time window.

[0052] In one embodiment, when the UE receives a first instruction and meets predetermined conditions, it starts a timer. These predetermined conditions can be indicated to the UE by the network device, for example, through a handover instruction or other signaling such as DCI. Alternatively, the predetermined conditions can be determined by the UE based on predetermined rules or through negotiation with the network device.

[0053] For example, when the first instruction is a CHO switching instruction, the predetermined condition can be a CHO switching condition.

[0054] In one embodiment, after starting the timer, the method may include: performing a RACH-based cell handover in response to determining that a RACH-less cell handover has failed; or stopping the timer in response to determining that a RACH-less cell handover has succeeded.

[0055] In one embodiment, determining that a RACH-less cell handover has failed includes: determining that a RACH-less cell handover has failed in response to a timer timeout. Here, a timer timeout may refer to the UE not accessing the target cell for the RACH-less cell handover during the timer's execution period. The timer's execution period may refer to the period before the timer's duration is reached.

[0056] In one embodiment, after determining that a RACH-less cell handover start timer has been executed, the method may include: stopping the timer in response to determining that a RACH-less cell handover has been successful.

[0057] In one embodiment, a successful RACH-less cell handover can refer to the UE accessing the target cell for the RACH-less cell handover, which may include: the UE successfully sending a Physical Uplink Shared Channel (PUSCH) and / or sending a Radio Resource Control (RRC) reconfiguration completion message to the target cell for the RACH-less cell handover.

[0058] In one embodiment, the timer is stopped in response to the UE successfully sending a PUSCH in the target cell of the RACH-less cell handover.

[0059] In one embodiment, the timer is stopped in response to the UE successfully sending an RRC reconfiguration complete message in the target cell of the RACH-less cell handover.

[0060] In one embodiment, stopping the timer can refer to not performing a cell handover involving a random access procedure after accessing the target cell.

[0061] In one embodiment, in response to determining that a RACH-less cell handover has failed, a RACH-based cell handover is performed. The target cell for the RACH-based cell handover may be the same as or different from the target cell for the RACH-less cell handover.

[0062] In one embodiment, determining to perform RACH-less cell handover includes: in response to receiving a first instruction sent by a network device and the UE being configured with first configuration information, determining to perform RACH-less cell handover; wherein the first configuration information is used for RACH-less cell handover.

[0063] In one embodiment, the first configuration information may be carried in the first instruction, or it may be sent to the UE as a separate signaling message together with the first instruction, or it may be received as a separate signaling message carrying the first configuration information before or after the first instruction is received.

[0064] In one embodiment, the first instruction may include: a switching instruction, a group switching instruction, or a conditional switching (CHO) switching instruction.

[0065] In one embodiment, determining to perform a RACH-less cell handover includes: in response to satisfying a CHO handover condition and the UE being configured with first configuration information, determining to perform a RACH-less cell handover; wherein the first configuration information is used for RACH-less cell handover.

[0066] In one embodiment, the predetermined information may further include second configuration information for conditional handover, for example, the second configuration information is carried in the first instruction. Conditional handover (CHO) refers to the UE performing cell handover based on one or more execution conditions. The second configuration information may indicate the execution conditions, or the execution conditions may be determined by the UE according to predetermined rules or through negotiation with network equipment.

[0067] In one embodiment, satisfying the CHO switching condition can be achieved by satisfying one or more of the CHO switching conditions, for example, by starting a timer when all CHO switching conditions are satisfied.

[0068] In one embodiment, after starting the timer, in response to determining that a RACH-less cell handover has failed, performing a RACH-based cell handover may include: performing a RACH-less cell handover during the timer's execution period; determining whether to perform a RACH-based cell handover based on whether the timer has expired; and performing a RACH-based cell handover in response to the timer's expiration. Specifically, performing a RACH-less cell handover during the timer's execution period can mean performing the cell handover without performing a random access procedure within the timer's duration.

[0069] In one embodiment, performing a RACH-based cell handover includes: sending a random access sequence to the target cell for the handover; sending an RRC reconfiguration complete message based on a response message of the random access sequence; and handing over to the target cell. Here, the target cell for the cell handover can be the target cell for a RACH-less cell handover.

[0070] In one embodiment, the method further includes: receiving second configuration information sent by a network device, the second configuration information being used to indicate the duration of a timer. The second configuration information may be carried in predetermined information; for example, the predetermined information may include the first instruction and the second configuration information. The second configuration information may also be sent via separate signaling; for example, the second configuration information may be sent simultaneously with the first instruction, or it may be sent separately.

[0071] Thus, when the network device is configured to perform RACH-less cell handover for the UE, the UE's behavior can be effectively defined when RACH-less cell handover fails. For example, when RACH-less cell handover fails, the UE can fall back to performing random access-based cell handover in a timely manner, thereby reducing the risk of the UE being unable to connect to the target cell due to RACH-less handover failure.

[0072] It should be noted that the technical features described in the foregoing embodiments can be arranged and combined arbitrarily, and their order can be changed, without contradiction, and can be combined into new methods and technical solutions.

[0073] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods or related technologies in the embodiments of this disclosure or other embodiments.

[0074] like Figure 3 As shown in the embodiments of this disclosure, an access control method is provided, executed by a UE, the method including:

[0075] S210: In response to determining that a RACH-less cell handover will be performed, start a timer;

[0076] S220: In response to determining that RACH-less cell handover has failed, perform RACH-based cell handover.

[0077] In this embodiment of the disclosure, step S210 may include: starting a timer in response to determining to perform RACH-less cell handover based on predetermined information sent by the network device.

[0078] In one embodiment, starting a timer in response to determining that a RACH-less cell handover will be performed can mean starting the timer when the RACH-less cell handover begins. For example, the predefined information may include a first instruction, and the timer may be started upon receiving the first instruction.

[0079] In one embodiment, in response to determining that a RACH-less cell handover will be performed, a timer is started. Alternatively, the timer may be started after a predetermined duration has elapsed since the start of the RACH-less cell handover, or when predetermined conditions are met after the start of the RACH-less cell handover. The predetermined duration and predetermined conditions may be indicated by the network device, or determined by the UE according to predetermined rules or through negotiation with the network device.

[0080] In one embodiment, the timer has a certain duration, and the UE can perform RACH-less cell handover during the timer's operation, i.e., within the timer's duration.

[0081] In one embodiment, the UE can start a timer upon receiving a first instruction. For example, the UE starts a timer upon receiving a first instruction.

[0082] In one embodiment, the first instruction may be one of a switching instruction, a group switching instruction, or a CHO switching instruction.

[0083] For example, when a UE receives a handover command from a network device, the UE starts a timer.

[0084] In one embodiment, the UE starts a timer within a predetermined time window after receiving the first instruction. The predetermined time window can be indicated to the UE by the network device, for example, through the first instruction or other signaling such as Downlink Control Information (DCI). Alternatively, the predetermined time window can also be determined by the UE based on predetermined rules or through negotiation with the network device.

[0085] For example, if the network device carries a predetermined time window length value, such as 10ms or 100ms, in the first instruction or other signaling, then the UE will start the timer within 10ms or 100ms after receiving the first instruction.

[0086] For example, the network device carries identification information or index information indicating a predetermined time window in the first instruction or other signaling. For instance, if the carried identification information is 'a', it indicates that the predetermined time window length is 10ms; if the carried identification information is 'b', it indicates that the predetermined time window is 100ms, etc. For example, the carried index information can indicate the determination of the predetermined time window length within a predetermined set, such as instructing the UE to determine that the target value in the predetermined set is the length of the predetermined time window.

[0087] In one embodiment, when a UE receives a CHO handover instruction from a network device, even if the UE does not immediately perform the handover after receiving the handover instruction, but needs to wait until the CHO handover conditions are met before performing the handover, the UE still starts a timer when it receives the CHO handover instruction again.

[0088] It should be noted that for descriptions of content that is repeated or corresponding to other embodiments, please refer to the relevant parts of the foregoing sections, such as step S110, etc., which will not be repeated here.

[0089] like Figure 4 As shown in the embodiments of this disclosure, an access control method is provided, executed by a UE, the method including:

[0090] S310: In response to determining that a RACH-less cell handover will be performed, start a timer;

[0091] S320: In response to a timer timeout, if the RACH-less cell handover fails, perform a RACH-based cell handover.

[0092] In this embodiment of the disclosure, timer timeout can refer to the UE failing to access the target cell for RACH-less cell handover during the timer's operation period. The timer's operation period can refer to the period before the timer's duration is reached.

[0093] In one embodiment, a RACH-less cell handover failure may refer to the UE not accessing the target cell for the RACH-less cell handover, which may include: the UE failing to send a PUSCH to the target cell for the RACH-less cell handover, and / or sending an RRC reconfiguration completion message.

[0094] In one embodiment, in response to determining that a RACH-less cell handover has failed, a RACH-based cell handover is performed. The target cell for the RACH-based cell handover may be the same as or different from the target cell for the RACH-less cell handover.

[0095] In some embodiments, determining to perform a RACH-less cell handover includes:

[0096] In response to receiving a first instruction from a network device and having configured first configuration information, the system determines to perform RACH-less cell handover; wherein the first configuration information is used for RACH-less cell handover.

[0097] In some embodiments, the first instruction includes: a switching instruction, a group switching instruction, or a CHO switching instruction.

[0098] It should be noted that for descriptions of content that is repeated or corresponding to other embodiments, please refer to the relevant parts of the foregoing sections, such as step S110, etc., which will not be repeated here.

[0099] like Figure 5 As shown in the embodiments of this disclosure, an access control method is provided, executed by a UE, the method including:

[0100] S410: In response to the CHO handover condition being met and the UE having first configuration information, determine to perform RACH-less cell handover and start a timer;

[0101] S420: In response to a timer timeout, if the RACH-less cell handover fails, perform a RACH-based cell handover.

[0102] The first configuration information is used for RACH-less cell handover.

[0103] In one embodiment, when the UE receives a CHO handover instruction from the network device, it does not start the timer at this time, but waits until the CHO handover conditions are met, that is, when the handover is performed, before starting the timer.

[0104] In one embodiment, satisfying the CHO switching condition can be achieved by satisfying one or more of the CHO switching conditions, for example, by starting a timer when all CHO switching conditions are satisfied.

[0105] In one embodiment, after starting the timer, in response to determining that a RACH-less cell handover has failed, performing a RACH-based cell handover may include: performing a RACH-less cell handover during the timer's execution period; determining whether to perform a RACH-based cell handover based on whether the timer has expired; and performing a RACH-based cell handover in response to the timer's expiration. Specifically, performing a RACH-less cell handover during the timer's execution period can mean performing the cell handover without performing a random access procedure within the timer's duration.

[0106] In one embodiment, performing a RACH-based cell handover includes: sending a random access sequence to the target cell for the handover; sending an RRC reconfiguration complete message based on a response message of the random access sequence; and handing over to the target cell. Here, the target cell for the cell handover can be the target cell for a RACH-less cell handover.

[0107] It should be noted that for descriptions of content that is repeated or corresponding to other embodiments, please refer to the relevant parts of the foregoing sections, such as step S110, etc., which will not be repeated here.

[0108] like Figure 6 As shown in the embodiments of this disclosure, an access control method is provided, executed by a UE, the method including:

[0109] S510: In response to determining that a RACH-less cell handover will be performed, start a timer;

[0110] S520: In response to the confirmation that the RACH-less cell handover was successful, stop the timer.

[0111] In some embodiments, determining that a RACH-less cell handover is successful includes: the UE accessing the target cell for the RACH-less cell handover. For example, the UE accessing the target cell for the RACH-less cell handover occurs during a timer operation.

[0112] In one embodiment, a UE accessing a target cell for RACH-less cell handover may include: determining that the RACH-less cell handover is successful based on determining that the UE has successfully sent a PUSCH in the target cell for handover, and / or determining that the UE has successfully sent an RRC reconfiguration message in the target cell for handover.

[0113] In some embodiments, performing RACH-based cell handover includes:

[0114] Send a random access sequence to the target cell for cell handover;

[0115] Based on the response message of the random access sequence, a Radio Resource Control (RRC) reconfiguration complete message is sent, and the user switches to the target cell.

[0116] The random access sequence sent by the UE can be Message1 (MSG1), for example, including a random access prefix carrying a random access sequence (preamble) code. After sending MSG1, the UE can receive the corresponding response message MSG2, such as a Random Access Response (RAR).

[0117] In some embodiments, the method may further include:

[0118] Receive second configuration information sent by the network device, the second configuration information being used to indicate the duration of the timer.

[0119] In one embodiment, when receiving predetermined information sent by a network device, the predetermined information may include second configuration information.

[0120] It should be noted that for descriptions of content that is repeated or corresponding to other embodiments, please refer to the relevant parts of the foregoing sections, such as step S110, etc., which will not be repeated here.

[0121] It should be noted that the technical features described in the foregoing embodiments can be arranged and combined arbitrarily, and their order can be changed, without contradiction, and can be combined into new methods and technical solutions.

[0122] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods or related technologies in the embodiments of this disclosure or other embodiments.

[0123] like Figure 7 As shown, this disclosure provides an access control method, executed by a network device, the method comprising:

[0124] S610: Send a pre-set information to the UE; the pre-set information is used to instruct the UE to perform a RACH-based cell handover in response to the determination that the RACH-less cell handover has failed.

[0125] In some embodiments, the pre-defined information is also used to instruct the UE to start a timer when it determines that a RACH-less cell handover is to be performed.

[0126] In some embodiments, the UE determines that the RACH-less cell handover has failed, including: determining that the RACH-less cell handover has failed in response to a timer timeout.

[0127] In some embodiments, the predetermined information includes: a first instruction;

[0128] The first instruction is used to instruct the UE to determine to perform RACH-less cell handover in response to the configuration of the first configuration information; wherein the first configuration information is used for RACH-less cell handover.

[0129] In some embodiments, the first instruction includes: a switching instruction, a group switching instruction, or a CHO switching instruction.

[0130] In some embodiments, predetermined information is used to instruct the UE to determine to perform a RACH-less cell handover in response to the satisfaction of CHO handover conditions and the UE being configured with first configuration information;

[0131] The first configuration information is used for RACH-less cell handover.

[0132] In some embodiments, the predetermined information is also used to instruct the UE to stop the timer in response to determining that the RACH-less cell handover is successful.

[0133] In some embodiments, predetermined information is used to instruct the UE to determine that the RACH-less cell handover is successful based on the determination that the UE has successfully transmitted PUSCH in the target cell during the handover.

[0134] In some embodiments, predetermined information is used to instruct the UE to send a random access sequence to the target cell for cell handover; based on the response message of the random access sequence, an RRC reconfiguration completion message is sent, and the UE hands over to the target cell.

[0135] In some embodiments, the predetermined information includes: second configuration information; the second configuration information is used to indicate the duration of a timer. The second configuration information may be carried in the first instruction, or sent to the UE via separate signaling along with the first instruction, or sent to the UE via separate signaling before or after sending the first instruction, etc. The specific method of sending the second configuration information is not limited here.

[0136] It should be noted that for descriptions of content that is repeated or corresponding to other embodiments, please refer to the relevant parts of the UE-side section, such as step S110, which will not be repeated here.

[0137] It should be noted that the technical features described in the foregoing embodiments can be arranged and combined arbitrarily, and their order can be changed, without contradiction, and can be combined into new methods and technical solutions.

[0138] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods or related technologies in the embodiments of this disclosure or other embodiments.

[0139] like Figure 8 As shown, this disclosure provides an access control method, executed by an access control system, which includes a UE and a network device; the method includes:

[0140] The network device sends the reservation information to the UE;

[0141] The UE receives the predefined information and, in response to the determination that the RACH-less cell handover has failed, performs a RACH-based cell handover.

[0142] It should be noted that the steps performed by the UE in this embodiment can refer to the relevant content on the UE side, and the steps performed by the network device can refer to the relevant content on the network device side, which will not be repeated here.

[0143] This disclosure provides an access control method, which may include:

[0144] 1. A handover method from RACH-less handover backoff to random access channel (RACH) based handover, including the introduction of a timer on the UE side;

[0145] 2. When the UE receives a handover command from the network, and the handover command is configured with RACH-less, the UE starts a timer;

[0146] 3. RACH-less means that when the UE switches to the target cell, it can skip random access or not initiate a random access procedure;

[0147] 4. As one implementation method, when the UE receives a group handover indication and RACH-less is configured, the UE starts a timer;

[0148] 5. As one implementation method, when the network configures CHO handover for the UE and configures RACH-less, the UE starts a timer when the CHO execution conditions are met;

[0149] 6. Stop the timer when the UE successfully sends a PUSCH in the target cell;

[0150] 7. When the timer expires, the UE initiates a handover to the target cell based on random access.

[0151] 8. The UE sends a random access sequence in the target cell, and then sends an RRC reconfiguration complete message;

[0152] 9. The duration of the timer is configured to the UE by the network.

[0153] This disclosure provides an information processing system, which includes a UE and a network device;

[0154] UE, used to execute one or more of the aforementioned technical solutions on the UE side;

[0155] A network device is used to execute one or more technical solutions on the network device side.

[0156] In this embodiment, the steps and related content performed by the UE are described in the previous embodiments, and the steps and related content performed by the network device are described in the previous embodiments, and will not be repeated here.

[0157] like Figure 9 As shown, this disclosure provides an access control device applied to a UE, the device comprising:

[0158] Processing unit 10 is configured to perform RACH-based cell handover in response to determining that RACH-less cell handover has failed.

[0159] In some embodiments, the processing unit 10 is further configured to:

[0160] In response to the determination to perform a RACH-less cell handover, a timer is started.

[0161] In some embodiments, the processing unit 10 is configured to:

[0162] In response to a timer timeout, it is determined that the RACH-less cell handover has failed.

[0163] In some embodiments, the processing unit 10 is configured to:

[0164] In response to receiving a first instruction from the network device and the UE having configured the first configuration information, it is determined to perform a RACH-less cell handover;

[0165] The first configuration information is used for RACH-less cell handover.

[0166] In some embodiments, the first instruction includes: a switching instruction, a group switching instruction, or a CHO switching instruction.

[0167] In some embodiments, the processing unit 10 is configured to:

[0168] In response to the CHO handover condition being met and the UE having first configuration information, it is determined to perform a RACH-less cell handover.

[0169] The first configuration information is used for RACH-less cell handover.

[0170] In some embodiments, the processing unit 10 is further configured to:

[0171] The timer stops upon confirming that the RACH-less cell handover is successful.

[0172] In some embodiments, the processing unit 10 is configured to:

[0173] Based on the determination that the UE successfully sends PUSCH in the target cell during handover, the handover based on RACH-less is considered successful.

[0174] In some embodiments, the processing unit 10 is configured to:

[0175] Send a random access sequence to the target cell for cell handover;

[0176] Based on the response message of the random access sequence, an RRC reconfiguration complete message is sent, and the user switches to the target cell.

[0177] In some embodiments, the processing unit 10 is further configured to:

[0178] Receive second configuration information sent by the network device, the second configuration information being used to indicate the duration of the timer.

[0179] like Figure 10 As shown in the figure, this disclosure provides an access control device applied to a network device, the device comprising:

[0180] The sending unit 20 is configured to send a predetermined message to the UE; the predetermined message is used by the UE to perform a RACH-based cell handover in response to determining that the RACH-less cell handover has failed.

[0181] In some embodiments, the pre-defined information is also used to instruct the UE to start a timer when it determines that a RACH-less cell handover is to be performed.

[0182] In some embodiments, the UE determines that the RACH-less cell handover has failed, including: determining that the RACH-less cell handover has failed in response to a timer timeout.

[0183] In some embodiments, the predetermined information includes: a first instruction;

[0184] The first instruction is used to instruct the UE to determine to perform RACH-less cell handover in response to the configuration of the first configuration information; wherein the first configuration information is used for RACH-less cell handover.

[0185] In some embodiments, the first instruction includes: a switching instruction, a group switching instruction, or a CHO switching instruction.

[0186] In some embodiments, predetermined information is used to instruct the UE to determine to perform a RACH-less cell handover in response to the satisfaction of CHO handover conditions and the UE being configured with first configuration information;

[0187] The first configuration information is used for RACH-less cell handover.

[0188] In some embodiments, the predetermined information is also used to instruct the UE to stop the timer in response to determining that the RACH-less cell handover is successful.

[0189] In some embodiments, predetermined information is used to instruct the UE to determine that the RACH-less cell handover is successful based on the determination that the UE has successfully transmitted PUSCH in the target cell during the handover.

[0190] In some embodiments, predetermined information is used to instruct the UE to send a random access sequence to the target cell for cell handover; based on the response message of the random access sequence, an RRC reconfiguration completion message is sent, and the UE hands over to the target cell.

[0191] In some embodiments, the predetermined information includes: second configuration information; the second configuration information is used to indicate the duration of the timer.

[0192] Unless otherwise specified, each step in a particular implementation or embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, the solution after removing some steps in a particular implementation or embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular implementation or embodiment can be arbitrarily interchanged. In addition, the optional methods or examples in a particular implementation or embodiment can be arbitrarily combined. Furthermore, the implementations or embodiments can be arbitrarily combined with each other. For example, some or all of the steps in different implementations or embodiments can be arbitrarily combined, and a particular implementation or embodiment can be arbitrarily combined with the optional methods or examples of other implementations or embodiments.

[0193] This disclosure provides a communication device, including:

[0194] Memory used to store processor-executable instructions;

[0195] The processor is connected to the memory separately;

[0196] The processor is configured to execute the access control method provided by any of the aforementioned technical solutions.

[0197] The processor may include various types of storage media, which are non-transitory computer storage media that can continue to store information after the communication device loses power.

[0198] Here, the communication equipment includes: a terminal or a network element, which can be any one of the aforementioned first to fourth network elements.

[0199] The processor can connect to memory via a bus or similar means to read executable programs stored in memory, for example... Figures 2 to 8 At least one of the methods shown.

[0200] Figure 11 This is a block diagram illustrating a terminal 800 according to an exemplary embodiment. For example, terminal 800 may be a mobile phone, computer, digital broadcast user equipment, messaging device, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc.

[0201] Reference Figure 11 Terminal 800 may include one or more of the following components: processing component 802, memory 804, power supply component 806, multimedia component 808, audio component 810, input / output (I / O) interface 812, sensor component 814, and communication component 816.

[0202] Processing component 802 typically controls the overall operation of terminal 800, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 802 may include one or more processors 820 to execute instructions to generate all or part of the steps of the methods described above. Furthermore, processing component 802 may include one or more modules to facilitate interaction between processing component 802 and other components. For example, processing component 802 may include a multimedia module to facilitate interaction between multimedia component 808 and processing component 802.

[0203] Memory 804 is configured to store various types of data to support operation on terminal 800. Examples of this data include instructions for any application or method operating on terminal 800, contact data, phonebook data, messages, pictures, videos, etc. Memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0204] Power supply component 806 provides power to various components of terminal 800. Power supply component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to terminal 800.

[0205] Multimedia component 808 includes a screen that provides an output interface between terminal 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of touch or swipe actions but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 808 includes a front-facing camera and / or a rear-facing camera. When terminal 800 is in an operating mode, such as a shooting mode or video mode, the front-facing camera and / or rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0206] Audio component 810 is configured to output and / or input audio signals. For example, audio component 810 includes a microphone (MIC) configured to receive external audio signals when terminal 800 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 804 or transmitted via communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.

[0207] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0208] Sensor assembly 814 includes one or more sensors for providing status assessments of various aspects of terminal 800. For example, sensor assembly 814 may detect the on / off state of device 800, the relative positioning of components such as the display and keypad of terminal 800, changes in the position of terminal 800 or a component of terminal 800, the presence or absence of user contact with terminal 800, the orientation or acceleration / deceleration of terminal 800, and temperature changes of terminal 800. Sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 814 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, or a temperature sensor.

[0209] Communication component 816 is configured to facilitate wired or wireless communication between terminal 800 and other devices. Terminal 800 can access wireless networks based on communication standards, such as WiFi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 816 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 816 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0210] In an exemplary embodiment, terminal 800 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0211] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 804 including instructions that can be executed by a processor 820 of a terminal 800 to generate the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0212] like Figure 12 As shown in the illustration, one embodiment of this disclosure illustrates the structure of a communication device 900. For example, the communication device 900 can be provided as a network node device. The communication device 900 can be the aforementioned base station.

[0213] Reference Figure 12 The communication device 900 includes a processing component 922, which further includes one or more processors, and memory resources represented by a memory 932 for storing instructions executable by the processing component 922, such as application programs. The application programs stored in the memory 932 may include one or more modules, each corresponding to a set of instructions. Furthermore, the processing component 922 is configured to execute instructions to perform any of the methods described above applied to execution at the base station, such as... Figures 2 to 8 At least one of the methods shown.

[0214] The communication device 900 may also include a power supply component 926 configured to perform power management of the communication device 900, a wired or wireless network interface 950 configured to connect the communication device 900 to a network, and an input / output (I / O) interface 958. The communication device 900 can operate on an operating system stored in memory 932, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, or similar.

[0215] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the appended claims.

[0216] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. An access control method, wherein, Performed by a user equipment (UE), the method includes: In response to receiving a first instruction from a network device and the UE being configured with first configuration information, it is determined to perform a cell handover based on RACH-less, wherein the first configuration information is used for RACH-less cell handover. Start the timer within the predetermined time window after receiving the first instruction; In response to the determination that cell handover based on RACH-less has failed, cell handover based on RACH is performed. In response to the determination that the RACH-less cell handover is successful, the timer is stopped; The determination that the RACH-less cell handover was successful includes: Based on the determination that the UE successfully transmits the Physical Uplink Shared Channel (PUSCH) in the target cell during handover, the handover of the RACH-less cell is determined to be successful. The first instruction includes index information, which is used to indicate the length of the predetermined time window in the predetermined set.

2. The method according to claim 1, wherein determining the failure of RACH-less cell handover includes: In response to the timer timeout, it is determined that the RACH-less cell handover has failed.

3. The method according to claim 1, wherein the first instruction comprises: Switching commands, group switching commands, or conditional switching commands (CHO switching commands) 4. The method according to claim 1 or 2, wherein determining to perform RACH-less cell handover includes: In response to the CHO handover condition being met and the UE being configured with first configuration information, it is determined to perform a RACH-less cell handover. The first configuration information is used for RACH-less cell handover.

5. The method according to any one of claims 1 to 4, wherein performing RACH-based cell handover comprises: Send a random access sequence to the target cell for cell handover; Based on the response message of the random access sequence, a Radio Resource Control (RRC) reconfiguration complete message is sent, and the user switches to the target cell.

6. The method according to claim 1, further comprising: The system receives second configuration information sent by a network device, the second configuration information being used to indicate the duration of the timer.

7. An access control method, wherein, Performed by a network device, the method includes: Send reservation information to the UE; the reservation information is used to indicate: In response to determining that the RACH-less cell handover has failed, the UE performs a RACH-based cell handover. The UE stops the timer in response to determining that the RACH-less cell handover is successful; The determination that the RACH-less cell handover was successful includes: Based on the determination that the UE successfully transmits the Physical Uplink Shared Channel (PUSCH) in the target cell during handover, the handover of the RACH-less cell is determined to be successful. The predetermined information includes a first instruction, which instructs the UE to determine to perform RACH-less cell handover in response to the configuration of the first configuration information; wherein the first configuration information is used for RACH-less cell handover, and the UE starts the timer within a predetermined time window after receiving the first instruction; The first instruction includes index information, which is used to indicate the length of the predetermined time window in the predetermined set.

8. The method according to claim 7, wherein, The UE determines that the RACH-less cell handover has failed, including: in response to the timer timeout, determining that the RACH-less cell handover has failed.

9. The method according to claim 7, wherein, The first instruction includes: a switching instruction, a group switching instruction, or a CHO switching instruction.

10. The method of claim 7 or 8, wherein, The predetermined information is used to instruct the UE to determine to perform RACH-less cell handover in response to meeting the CHO handover condition and the UE being configured with first configuration information. The first configuration information is used for RACH-less cell handover.

11. The method according to any one of claims 7 to 10, wherein, The predetermined information is used to instruct the UE to send a random access sequence to the target cell for cell handover; based on the response message of the random access sequence, an RRC reconfiguration complete message is sent, and the UE is switched to the target cell.

12. The method of claim 7, wherein, The predetermined information includes: second configuration information; the second configuration information is used to indicate the duration of the timer.

13. An access control device, wherein, Applied to a UE, the device includes: The processing unit is configured as follows: In response to receiving a first instruction from a network device and the UE being configured with first configuration information, it is determined to perform a cell handover based on RACH-less, wherein the first configuration information is used for RACH-less cell handover. Start the timer within the predetermined time window after receiving the first instruction; In response to the determination that RACH-less cell handover has failed, a RACH-based cell handover is performed. In response to the confirmation that the RACH-less cell handover was successful, the timer is stopped; The determination that the RACH-less cell handover was successful includes: Based on the determination that the UE successfully transmits the Physical Uplink Shared Channel (PUSCH) in the target cell during handover, the handover of the RACH-less cell is determined to be successful. The first instruction includes index information, which is used to indicate the length of the predetermined time window in the predetermined set.

14. An access control device, wherein, Applied to network devices, the device includes: The transmitting unit is configured to send predetermined information to the UE; The predetermined information is used to indicate: In response to determining that the RACH-less cell handover has failed, the UE performs a RACH-based cell handover. In response to determining that the RACH-less cell handover was successful, the UE stops the timer; The determination that the RACH-less cell handover was successful includes: Based on the determination that the UE successfully transmits the Physical Uplink Shared Channel (PUSCH) in the target cell during handover, the handover of the RACH-less cell is determined to be successful. The predetermined information includes a first instruction, which instructs the UE to determine to perform RACH-less cell handover in response to the configuration of the first configuration information; wherein the first configuration information is used for RACH-less cell handover, and the UE starts the timer within a predetermined time window after receiving the first instruction; The first instruction includes index information, which is used to indicate the length of the predetermined time window in the predetermined set.

15. A communication device comprising a processor, a memory, and an executable program stored on the memory and executable by the processor, wherein, When the processor runs the executable program, it performs the method as described in any one of claims 1 to 6, 7 to 12.

16. A computer storage medium storing an executable program; the executable program, when executed by a processor, is capable of implementing the method as described in any one of claims 1 to 6, 7 to 12.

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