Access methods, devices, storage media, and chips

Abstract

The present disclosure relates to an access method, an apparatus, a storage medium, and a chip. The method includes a step in which a terminal device determines a first parameter corresponding to at least one candidate access point, determines a target timing advance (TA) used to access a target access point based on the first parameter, and accesses the target access point based on the target TA. The candidate access points may include a target access point, and the access point may include a cell and / or a beam. In this manner, the terminal device can determine the target TA based on the first parameter and access the target access point based on the target TA, thereby saving time for determining the target TA through a random access process, reducing handover delays, and improving data transmission efficiency in the handover process.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technologies, and specifically, to an access method, apparatus, storage medium, and chip.

Background Art

[0002] In the handover process of a wireless communication system, a network device can send a handover command to a terminal device in response to a measurement report result sent by the terminal device, and the handover command may carry configuration information of a target cell. When the terminal device receives the handover command, the terminal device synchronizes with the target cell, and then can start a random access process (Radom Access Channel, RACH) to access the target cell. Through the random access process, the terminal device can obtain the timing advance (Timing Advance, TA) of the target cell, and based on the TA, send a reconfiguration completion message to the target cell to complete the handover.

[0003] In related technologies, the delay of the handover process of the terminal device is large, and the data transmission efficiency in the handover process is reduced.

Summary of the Invention

Problems to be Solved by the Invention

[0004] To overcome the above problems in the prior art, the present disclosure provides an access method, apparatus, storage medium, and chip.

Means for Solving the Problems

[0005] According to a first aspect of an embodiment of the present disclosure, an access method is provided, and the method includes: A step of determining a first parameter corresponding to at least one candidate access point, wherein the candidate access point includes a target access point, and the access point is a cell and / or beam, A step of determining the target timing advance (TA) used to access the target access point based on the first parameter, The step includes accessing the target access point based on the target TA.

[0006] According to a second aspect of the embodiments of this disclosure, an access method is provided, the method is: A step of determining a first parameter corresponding to at least one candidate access point, wherein the candidate access point includes a target access point. The steps include sending a first message to a terminal device based on the first parameter, the first message comprising the first parameter, which is used to determine the target timing advance (TA) used to access the target access point when attempting to access the target access point, and to instruct the terminal device to access the target access point based on the target TA, wherein the access point is a cell and / or beam.

[0007] According to a third aspect of the embodiments of the present disclosure, an access device is provided which is applied to a terminal device, and the device is A first decision module configured to determine a first parameter corresponding to at least one candidate access point, wherein the candidate access point includes a target access point, and the access point is a cell and / or beam, A second decision module configured to determine the target timing advance (TA) used to access the target access point based on the first parameter, Includes an access module configured to access the target access point based on the target TA.

[0008] According to a fourth aspect of the embodiments of this disclosure, an access device is provided which is applied to a network device, and the device is A third decision module configured to determine a first parameter corresponding to at least one candidate access point, wherein the candidate access point includes a third decision module that includes a target access point, A first transmitting module configured to send a first message to a terminal device based on the first parameter, the first message comprising the first parameter, which is used to determine the target timing advance (TA) used to access the target access point when attempting to access the target access point, and to instruct the terminal device to access the target access point based on the target TA, the access point comprising the first transmitting module which is a cell and / or beam.

[0009] According to a fifth aspect of the embodiments of this disclosure, an access device is provided, Processor and Includes memory for storing instructions that can be executed by the processor, The processor is configured to perform the steps of the access method according to the first aspect of the present disclosure.

[0010] According to a sixth aspect of the embodiments of this disclosure, an access device is provided, Processor and Includes memory for storing instructions that can be executed by the processor, The processor is configured to perform the steps of the access method according to a second aspect of the present disclosure.

[0011] According to a seventh embodiment of the embodiments of the present disclosure, a computer-readable storage medium is provided which stores computer program instructions, and which, when the computer program instructions are executed by a processor, enables the steps of the access method according to the first embodiment of the present disclosure.

[0012] According to an eighth aspect of the embodiments of the present disclosure, a computer-readable storage medium is provided which stores computer program instructions, and which, when the computer program instructions are executed by a processor, enables the steps of the access method according to the second aspect of the present disclosure.

[0013] According to a ninth aspect of the embodiments of this disclosure, the chip is, A chip is provided which includes a processor and an interface, the processor performing steps of the access method according to a first aspect of the present disclosure by reading instructions.

[0014] According to a tenth embodiment of the embodiments of this disclosure, the chip is, A chip is provided which includes a processor and an interface, the processor performing a step of the access method according to a second aspect of the present disclosure by reading instructions. [Effects of the Invention]

[0015] The technical means according to the embodiments of the present disclosure may include the following beneficial effects. The terminal device determines a first parameter corresponding to at least one candidate access point, determines a target timing advance (TA) used to access a target access point based on the first parameter, and can access the target access point based on the target TA. The candidate access point may include the target access point, and the access points may include cells and / or beams. In this way, the terminal device can determine the target TA based on the first parameter and access the target access point based on the target TA, thereby saving the time for determining the target TA by the random access process, reducing the delay of handover, and improving the data transmission efficiency in the handover process.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory, and do not limit the present disclosure.

Brief Description of the Drawings

[0017] The drawings here are incorporated into the specification, constitute a part of the specification, show embodiments that conform to the present disclosure, and are used to interpret the principles of the present disclosure together with the specification. [Figure 1] It is a schematic diagram of a communication system shown in one exemplary embodiment. [Figure 2] It is a process chart of an access method shown in one exemplary embodiment. [Figure 3] It is a process chart of an access method shown in one exemplary embodiment. [Figure 4] It is a process chart of an access method shown in one exemplary embodiment. [Figure 5] It is a process chart of an access method shown in one exemplary embodiment. [Figure 6]The process chart of a method for a network device to determine a first parameter shown in one exemplary embodiment of the present invention. [Figure 7] The process chart of an access method shown in one exemplary embodiment. [Figure 8] The process chart of an access method shown in one exemplary embodiment. [Figure 9] The block diagram of an access device shown in one exemplary embodiment. [Figure 10] The block diagram of an access device shown in one exemplary embodiment. [Figure 11] The block diagram of an access device shown in one exemplary embodiment. [Figure 12] The block diagram of an access device shown in one exemplary embodiment. [Figure 13] The block diagram of an access device shown in one exemplary embodiment.

Embodiments for Carrying Out the Invention

[0018] Here, exemplary embodiments will be described in detail, and the examples are shown in the drawings. In the following description, for the drawings, the same numbers in different drawings indicate the same or similar elements unless otherwise specified. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Rather, they are merely examples of devices and methods consistent with some aspects of the present disclosure as described in detail in the appended claims.

[0019] Note that all operations for obtaining signals, information, or data in the present disclosure are performed on the premise of complying with the corresponding data protection laws and regulations policies of the location country and obtaining permission from the owner of the corresponding device.

[0020] In this disclosure, terms such as "first," "second," etc., are used to distinguish similar subjects and are not intended to be understood as representing a specific order or priority. Furthermore, unless otherwise stated, in descriptions referring to drawings, the same reference numerals in different drawings indicate the same element.

[0021] In the statements of this disclosure, unless otherwise specified, “plural” means two or more, and the same applies to other quantifiers. “At least one,” “one or more,” or similar expressions mean any combination of these “ones,” including any combination of single or plural “ones.” For example, “at least one a” can represent any number of “a.” Also, for example, one or more of a, b, and c may represent a, b, c, ab, ac, bc, or abc, where a, b, and c may be single or plural. “And / or” is a relational relationship that describes related objects, and there may be three types of relationships, for example, A and / or B can mean A alone, A and B together, or B alone, where A and B may be singular or plural.

[0022] In embodiments of this disclosure, while operations or steps are described in a specific order in the drawings, it should not be understood that these operations or steps must be performed in a specific order or serial order shown, or that all operations or steps shown must be performed to obtain a desired result. In embodiments of this disclosure, these operations or steps may be performed serially, in parallel, or only a portion of these operations or steps may be performed.

[0023] Below, we will first describe the implementation environment of the embodiments of this disclosure.

[0024] The technical solutions of the embodiments of this disclosure can be applied to a variety of communication systems. The communication system may include one or more of the following: 4G (the 4th Generation) communication systems, 5G (the 5th Generation) communication systems, and other future wireless communication systems (e.g., 6G). The communication system may include one or more of the following: Public Land Mobile Network (PLMN) networks, device-to-device (D2D) communication systems, machine-to-machine (M2M) communication systems, Internet of Things (IoT) communication systems, vehicle-to-everything (V2X) communication systems, or other communication systems.

[0025] Figure 1 is a schematic diagram of a communication system shown in one exemplary embodiment, which may include a terminal device 150 and a network device 160, as shown in Figure 1. The communication system can be used to support 4G network access technologies such as Long Term Evolution (LTE) access technology, 5G network access technologies such as New Radio Access Technology (New RAT), or other future wireless communication technologies. The number of network devices and terminal devices in the communication system may be one or more, and the number of network devices and terminal devices in the communication system shown in Figure 1 is merely an example and is not limited to this disclosure.

[0026] The network device in Figure 1 may be used to support terminal access, and for example, the network device may be an evolutionary Node B (eNB or eNodeB) in LTE, the next generation Node B (gNB or gNodeB) in a 5G network, the network device may be a radio access network (NG-RAN) device in a 5G network, the network device may be a base station, broadband network gateway (BNG), aggregation switch, or non-3GPP (3rd Generation Partnership Project) access device in a future evolving public land mobile network (PLMN). Selectively, the network devices in the embodiments of this disclosure may include, but are not limited to, various forms of base stations, such as macro base stations, micro base stations (also called small stations), relay stations, access points, 5G base stations, or future base stations, satellites, transmitting and receiving points (TRPs), transmitting points (TPs), mobile switching centers, device-to-device (D2D), machine-to-machine (M2M), the Internet of Things (IoT), the Vehicle-to-Everything (V2X), and other devices that perform base station functions in communications. For convenience of description, in all embodiments of this disclosure, devices that provide wireless communication functionality to terminal devices are collectively referred to as network devices or base stations.

[0027] The terminal device in Figure 1 may be an electronic device that provides voice or data communication capabilities, and may also be called, for example, User Equipment (UE), Subscriber Unit, Mobile Station, Station, Terminal, etc. Examples of such terminal devices may include smartphones, smart wearable devices, smart speakers, smart tablets, wireless modems, Wireless Local Loop (WLL) stations, PDAs (Personal Digital Assistants), CPEs (Customer Premise Equipment), etc. With the development of wireless communication technology, any device that can access a communication system, communicate with network devices of a communication system, communicate with other objects via a communication system, or communicate directly between two or more devices may also be a terminal device in the embodiments of this disclosure. Examples include terminals and automobiles in smart transportation, household devices in smart homes, power meters, voltage monitors, and environmental monitors in smart grids, video boundary monitors and cash registers in smart security networks, etc. In the embodiments of this disclosure, the terminal device may communicate with a network device. The terminal device may be statically fixed or mobile, and is not limited to these.

[0028] In some embodiments, the network device may include at least one base station, each base station may include at least one cell. Furthermore, each cell may further include at least one beam, and as an example, some or all of the cells in the network device may be beamforming-supporting cells, each cell may be equipped with one or more beams.

[0029] The above communication system can support mobility handover of terminal devices. For example, a terminal device may hand over between two beams, between two cells, or between two base stations. In the handover process of a wireless communication system, a network device may send a handover command to a terminal device in response to a measurement report sent by the terminal device, and this handover command may carry target cell configuration information. Upon receiving the handover command, the terminal device can access the target cell by initiating a Random Access Channel (RACH) process after synchronizing with the target cell. Through the Random Access process, the terminal device can obtain the timing advance (TA) of the target cell and complete the handover by sending a reconfiguration completion message to the target cell based on the TA.

[0030] In some embodiments, the network device may, in a handover instruction, instruct the terminal device to use a TA to access the target cell, thereby allowing the terminal device to directly send a reset complete message to the target cell without performing the random access process, i.e., by skipping RACH. This reduces handover delay and improves data transmission efficiency.

[0031] In some embodiments, to improve the robustness of handover, a terminal device may perform a Conditional Handover (CHO), in which case the network device may pre-configure a CHO handover instruction for the terminal device, including the handover target cell setting and the handover trigger condition, where the handover target cell setting may be a configuration parameter provided by the target cell. The terminal device may store the CHO handover instruction received from the network device, perform a Radio Resource Management (RRM) measurement, and determine whether the handover trigger condition indicated by the CHO handover instruction is met. If the handover trigger condition is met, the terminal device may perform the handover itself. This avoids radio link failure due to the base station sending the handover instruction too late.

[0032] Furthermore, when a terminal device hands over to a target cell, different TAs (Terminal Adapters) may be used depending on the cell or beam. In a conditional handover process, network devices do not know when the handover will occur, and terminal devices may use different TAs when handing over at different locations or times. Therefore, the CHO instruction cannot specify the target cell's TA. As a result, terminal devices cannot skip the RACH stage in the conditional handover process, and consequently, handover delays remain significant.

[0033] This disclosure provides an access method, apparatus, storage medium, and chip to solve the above problems.

[0034] Figure 2 is a process chart of an access method shown in one exemplary embodiment. This method can be applied to a terminal device in the above-described communication system. As shown in Figure 2, the method may include the following steps S201 to S203.

[0035] In S201, the terminal device determines a first parameter corresponding to at least one candidate access point.

[0036] Here, the candidate access point may include a target access point, and the access point may be one or more of a cell and a beam. For example, in one possible embodiment, the terminal device may determine a first parameter corresponding to at least one candidate cell, the candidate cell may include a target cell. In another possible embodiment, the terminal device may determine a first parameter corresponding to at least one candidate beam, the candidate beam may include a target beam. In yet another possible embodiment, the terminal device may determine a first parameter corresponding to at least one candidate cell and a candidate beam, where the first parameter corresponding to the target access point is used to instruct the terminal device to determine a timing advance (TA) used to access the target access point.

[0037] In some embodiments, the first parameter may be a parameter pre-configured by the terminal device.

[0038] In some other embodiments, the first parameter may be a parameter set by a network device. For example, the network device sends a configuration to a terminal and sets the corresponding parameter on the terminal.

[0039] A terminal device may, in response to receiving a first message sent by a network device, obtain the first parameter based on that first message. That is, the network device may send a first message to the terminal device, which includes the first parameter.

[0040] In S202, the terminal device determines the target timing advance (TA) used to access the target access point based on the first parameter.

[0041] The terminal device may decide whether or not to attempt to access the target access point based on pre-configured conditions. These pre-configured conditions may include handover conditions, RRC (Radio Resource Control) reconfiguration conditions, or other conditions, and the methods by which the terminal device accesses the target access point may include, but are not limited to, handover-based access, RRC reconfiguration-based access, or direct access.

[0042] For example, when a terminal device receives a handover command sent by a network device, it may attempt to access the target access point in accordance with the instructions of the handover command, that is, it may initiate handover access to the target access point based on the instructions of the handover command.

[0043] Furthermore, for example, a terminal device may attempt to access the target access point itself if the handover conditions are met based on the CHO process; in other words, it may initiate handover access to the target access point based on the CHO process.

[0044] In some embodiments, when a terminal device decides to attempt to access a target access point, it may obtain a first parameter corresponding to the target access point and, based on the first parameter, determine a target TA to be used to access the target access point.

[0045] In S203, terminal devices access the target access point based on the target TA.

[0046] As an example, a terminal device may access a target access point based on the target TA using a random access channel-less (RACH-less) scheme. Alternatively, a terminal device may skip the random access process based on the target TA and directly send an RRC configuration complete message to the target access point based on the target TA, thereby accessing the target access point.

[0047] In the embodiments described herein, the target access point may include one or more of the target cell and the target beam. The candidate access point may include one or more of the candidate cell and the candidate beam.

[0048] In some embodiments, the target access point described above may include a target cell. This target cell may be different from or the same as the serving cell of the terminal device, where the serving cell represents the cell currently being used by the terminal device.

[0049] In this way, the terminal device can obtain the target TA of a different cell.

[0050] In some other embodiments, the target access point described above may be a target beam. The target beam may be different from or the same as the serving beam of the terminal device, where the serving beam represents the beam currently being used by the terminal device. Furthermore, the target beam and the serving beam may be in the same cell or in different cells.

[0051] In some other embodiments, the target access point described above may include a target cell and a target beam. For example, a terminal device may access the target beam of a target cell by handing over from the serving beam of a serving cell.

[0052] In this way, the terminal device can acquire the target TA of different beams.

[0053] By employing the above method, a terminal device can determine a first parameter corresponding to at least one candidate access point, determine a target timing advance (TA) used to access the target access point based on the first parameter, and access the target access point based on the target TA. Here, the candidate access point may include the target access point, and the access point may include cells and / or beams. In this way, the terminal device can determine the target TA based on the first parameter and access the target access point based on the target TA, thereby saving time that would otherwise be spent determining the target TA by a random access process, reducing handover delays, and improving data transmission efficiency in the handover process.

[0054] Figure 3 is a process chart of an access method shown in one exemplary embodiment. As shown in Figure 3, the method may include the following steps S301 to S303.

[0055] In S301, the terminal device receives the first message sent by the network device. Here, the first message may include a first parameter corresponding to at least one candidate access point. In this way, when a terminal device receives the first message, it can obtain the first parameter in the first message corresponding to at least one candidate access point.

[0056] The first message may be any message or data package that a network device sends to a terminal device.

[0057] In some embodiments, the first message may be any RRC message that the network device sends to the terminal device, such as an RRC reconfiguration message, an RRC access success message, or another RRC message.

[0058] In some other embodiments, the first message may be any RRC message other than a handover command message. For example, the first message may be a message instructing a terminal device to perform a CHO handover, such as a CHO handover command message.

[0059] In some other embodiments, the first message may be a system message, and the network device may broadcast a first parameter corresponding to at least one candidate access point via the system message.

[0060] Here, the candidate access point may include the target access point, and the access point may be a cell and / or a beam.

[0061] If the access point includes a cell, the candidate access point may include one or more of a serving cell and / or adjacent cells. The serving cell may be a cell that a terminal device is currently accessing or located in, for example, the serving cell may provide wireless communication services to the terminal device.

[0062] In some embodiments, the adjacent cell may include a cell with which a cell adjacency relationship has been established with the serving cell. In some other embodiments, the adjacent cell may include a cell whose distance from the serving cell is less than or equal to a preset adjacent cell distance threshold. In some other embodiments, the adjacent cell may include a cell with which a cell adjacency relationship has been established with the serving cell and whose distance from the serving cell is less than or equal to a preset adjacent cell distance threshold. In some even more embodiments, the adjacent cell may include a cell with which a cell adjacency relationship has been established with the serving cell, or a cell whose distance from the serving cell is less than or equal to a preset adjacent cell distance threshold. Here, the preset adjacent cell distance threshold may be any preset distance threshold.

[0063] If the access point is a beam, the candidate access point may include one or more of the serving beam and adjacent beams. The serving beam may be the beam that a terminal device is currently accessing or located in the area of, for example, the serving beam may provide wireless communication services to the terminal device.

[0064] Similarly, in some embodiments, the adjacent beam may include a beam with which a beam adjacency relationship has been established with the serving beam. In some other embodiments, the adjacent beam may include a beam whose distance from the serving beam is less than or equal to a preset adjacent beam distance threshold. In some other embodiments, the adjacent beam may include a beam with which a beam adjacency relationship has been established with the serving beam, and whose distance from the serving beam is less than or equal to a preset adjacent beam distance threshold. In some even more embodiments, the adjacent beam may include a beam with which a beam adjacency relationship has been established with the serving beam, or a beam whose distance from the serving beam is less than or equal to a preset adjacent beam distance threshold. Here, the preset adjacent beam distance threshold may be any preset distance threshold.

[0065] In S302, once the target access point to be accessed is determined, the terminal device determines the target timing advance (TA) to be used to access the target access point based on the first parameter.

[0066] In S303, the terminal device accesses the target access point based on the target TA.

[0067] In this way, the terminal device can receive a first parameter from the network device, determine the target TA based on the first parameter, and access the target access point based on the target TA. This saves the time required to determine the target TA through a random access process, reduces handover delays, and improves data transmission efficiency in the handover process.

[0068] The first parameter described above may include an access point identifier for at least one candidate access point and an access point TA parameter corresponding to each access point identifier. In this way, the terminal device can determine the target access point TA parameter corresponding to the target access point identifier based on the first parameter, where the target access point identifier may be an access point identifier corresponding to the target access point to be accessed. The target TA is determined based on the target access point TA parameter.

[0069] Here, the access point identifier may include one or more of the cell identifier and beam identifier. For example, the cell identifier may include a CGI (Cell Global Identifier), and the beam identifier can be determined by a TCI (Transmission Configuration Indicator).

[0070] In some embodiments, the access point identifier may include a cell identifier, and the access point TA parameters may include cell TA parameters. In some other embodiments, the access point identifier may include a beam identifier, and the access point TA parameters may include beam TA parameters. In some other embodiments, the access point identifier may include both a cell identifier and a beam identifier, and the access point TA parameters may include both cell TA parameters and beam TA parameters.

[0071] In some embodiments, the above access point TA parameters are: candidate TA may be included. candidate The TA may be used to instruct a terminal device to obtain the TA length corresponding to the access point identifier.

[0072] For example, candidate The TA may include the access point TA length (which may be any number greater than or equal to 0) or the access point TAG (Timing Advance Group) identifier; in other words, the above access point TA parameter may include the access point TA length or the access point TAG identifier. In this way, the terminal device candidate The target TA length corresponding to the target access point identifier may be determined based on the TA (or access point TA parameters). For example, the access point TA length corresponding to the target access point identifier may be used as the TA length of the target TA, or the TA length of the target TA may be determined based on the access point TAG identifier corresponding to the target access point identifier.

[0073] The terminal device may store N timing add-on groups (TAGs), where N is a positive integer greater than or equal to 1, for example, N is 4. Each TAG may contain at least one cell, and cells within the same TAG may use the same TA length. Each TAG may be distinguished by a TAG identifier; that is, different TAGs have different TAG identifiers. Each cell may belong to a single TAG. In this way, the corresponding TA length may be determined by the TAG identifier.

[0074] In some embodiments, the above candidate TA is TA offset N TA It may also include an offset.

[0075] In some other embodiments, the above target access point TA parameters are at least one candidate TA and each candidate It may also include the first condition information corresponding to the TA.

[0076] In this way, the terminal device determines whether or not it satisfies the TA activation conditions based on the first condition information, and if it is determined that the terminal device satisfies the TA activation conditions, the first condition information corresponds to candidate Based on the TA, the target TA can be determined.

[0077] Furthermore, candidate The TA may also include the access point TA length or access point TAG identifier.

[0078] In some embodiments, the above access point TA parameters are candidate If a TA is included but does not contain the first condition information described above, the terminal device may directly obtain the target TA corresponding to the target access point without performing a condition check.

[0079] The first condition information described above includes one or more of the following: pre-set signal condition information, pre-set position condition information, and pre-set time condition information. Each of these will be explained below.

[0080] Information 1. Pre-set signal condition information The pre-configured signal condition information may be used to instruct a terminal device to determine whether or not it meets the TA activation conditions based on the detected wireless signal strength of the target access point.

[0081] In some embodiments, if the first condition information includes pre-configured signal condition information, the TA activation condition includes the radio signal strength of the target access point detected by the terminal device being within a target signal strength range, the target signal strength range being a signal strength range determined based on the pre-configured signal condition information.

[0082] The wireless signal strength may include RSRP (Reference Signal Receiving Power) or RSSI (Received Signal Strength Indicator) detected by the terminal device.

[0083] Taking the case where the radio signal strength is RSRP as an example, the pre-set signal condition information may include a correspondence between at least one RSRP and a TA, and as an example, multiple RSRs The correspondence between the P range and TA may also be included. For example, the TA corresponding to a signal condition where RSRP is smaller than the first RSRP value is the first candidate It may also be a TA, and a TA corresponding to a signal condition where RSRP is between the first RSRP value and the second RSRP value (for example, greater than or equal to the first RSRP value and less than the second RSRP value) is the second candidate It may also be a TA, and a TA corresponding to a signal condition where RSRP is between the second RSRP value and the third RSRP value (for example, greater than or equal to the second RSRP value and less than the third RSRP value) is the third candidateIt may also be a TA, and a TA that corresponds to a signal condition where RSRP is greater than or equal to the 3rd RSRP value is the 4th candidate It may also be TA. The values ​​of the first to fourth RSRPs above may be set empirically, for example, the relationship of the magnitudes of the above RSRP values ​​may be first RSRP value < second RSRP value < third RSRP value < fourth RSRP value. In some other embodiments, more or fewer interval ranges may be set, for example, M RSRPs arranged from smallest to largest can be divided to obtain M+1 RSRP interval ranges, each RSRP range being one candidate It supports TA (Terminal Adapter).

[0084] In this way, when a terminal device detects that the RSRP of the target access point is within the target signal strength range, it will respond to the target signal strength range. candidate The target TA can be determined based on the TA. For example, if a terminal device detects that the RSRP of the target access point is greater than or equal to the first RSRP value and less than the second RSRP value, then the second RSRP value described above can be used to determine the target TA. candidate You can use TA as the target TA.

[0085] The pre-configured signal condition information may include signal condition information corresponding to candidate access points of the terminal device. The candidate access points may include one or more. For example, if the access point is a cell, the candidate access points may include one or more of the serving cell, handover target cell, and adjacent cell. Also, for example, if the access point is a beam, the candidate access points may include one or more of the serving beam, handover target beam, and adjacent beam.

[0086] In this way, the terminal device determines whether or not it satisfies the TA activation conditions based on pre-configured signal condition information, and if it is determined that the terminal device satisfies the TA activation conditions, the pre-configured signal condition information corresponds to candidateBased on the TA, the target TA can be determined.

[0087] Information 2. Pre-set location condition information The pre-configured location condition information may be used to instruct the terminal device to determine whether or not the terminal device meets the TA activation conditions based on the terminal device's location information.

[0088] In some embodiments, if the first condition information includes pre-set position condition information, the pre-set position condition information includes at least one first candidate It may include cells. The TA activation condition is that the serving cell of the terminal device is at least one of the first of the above. candidate This may include the fact that it is contained within a cell.

[0089] As an example, a terminal device, based on the pre-set location condition information, performs at least one first candidate The cell may be determined, and the serving cell is the first candidate If included in a cell, it may be determined that the terminal device satisfies the TA activation conditions. This corresponds to the pre-configured location condition information. candidate Based on the TA, the target TA can be determined.

[0090] In some other embodiments, if the first condition information includes pre-set position condition information, the pre-set position condition information includes at least one second candidate Cell and each second candidate The TA activation condition may include a first distance parameter corresponding to the cell. The TA activation condition includes the terminal device and the second candidate This may include the condition that the first distance to the antenna corresponding to the cell is less than or equal to a first distance threshold, where the first distance threshold is a distance threshold determined based on a first distance parameter.

[0091] As an example, the terminal device determines a first distance threshold based on a first distance parameter, and the terminal device and the second distance threshold candidateIf the distance to the cell is less than or equal to the first distance threshold, it is determined that the terminal device satisfies the TA activation condition and the pre-configured location condition information is corresponding candidate The target TA may be determined based on the TA.

[0092] In this embodiment, there are multiple methods by which a terminal device determines a first distance threshold based on a first distance parameter. For example, the terminal device may use the first distance parameter as the first distance threshold. Alternatively, for example, the terminal device may determine a first distance threshold corresponding to a first distance parameter based on a pre-set correspondence of distance parameter thresholds. The pre-set correspondence of distance parameter thresholds may be the same correspondence set by both the terminal device and the network device. For example, if the first distance parameter is 1, the corresponding first distance threshold may be 30; if the first distance parameter is 2, the corresponding first distance threshold may be 50; if the first distance parameter is 3, the corresponding first distance threshold may be 100, and so on.

[0093] In some other embodiments, if the first condition information includes pre-configured location condition information, the pre-configured location condition information includes pre-configured location parameters and second distance parameters, the TA activation condition includes that the second distance between the terminal device and the pre-configured location is less than or equal to the second distance threshold, the pre-configured location is a geographical location determined based on the pre-configured location parameters, and the second distance threshold is a distance threshold determined based on the second distance parameter.

[0094] As an example, the terminal device determines a second distance threshold based on a second distance parameter, and if the distance between the terminal device and a preset location is less than or equal to the second distance threshold, it determines that the terminal device satisfies the TA activation condition and corresponds to the preset location condition information. candidate The target TA may be determined based on the TA. Here, the pre-set location may be a geographical location determined based on pre-set location parameters.

[0095] For example, the pre-set position parameter may be a latitude and longitude parameter, and the pre-set position may be determined based on the latitude and longitude parameter.

[0096] Similarly, there are several methods by which a terminal device determines a second distance threshold based on a second distance parameter. For example, the terminal device may use the second distance parameter as the second distance threshold. Alternatively, for example, the terminal device may determine a second distance threshold corresponding to a second distance parameter based on a pre-set correspondence between distance parameter thresholds.

[0097] In this way, the terminal device determines whether or not it satisfies the TA activation conditions based on pre-configured location condition information, and if it is determined that the terminal device satisfies the TA activation conditions, the pre-configured location condition information corresponds to candidate Based on the TA, the target TA can be determined.

[0098] Information 3. Pre-set time condition information The pre-configured time condition information may be used to instruct a terminal device to determine whether or not it meets the TA activation conditions based on the access start time.

[0099] For example, if the first condition information includes pre-configured time condition information, the pre-configured time condition information includes pre-configured time parameters, the TA activation condition includes the current time of the terminal device being within the first time range, and the first time range is a time range determined based on the pre-configured time parameters.

[0100] In some embodiments, the preset time parameters include a first absolute time and a first time length. The first time range may be determined by a method for determining the first time range based on the first absolute time and the first time length.

[0101] Here, the first absolute time and the first time length described above may be times determined by the network device based on pre-configured parameters.

[0102] As an example, the first time range may be defined as the time range obtained by adding a first time length to a first absolute time. For example, the first absolute time may be a predetermined absolute time (e.g., 19:00), and the first time length may be a predetermined time length (e.g., 30 minutes), and in this way, the time range from 19:00 to 19:30 may be defined as the first time range.

[0103] In this way, if the current time of the terminal device is within the first time range, it can be determined that the terminal device satisfies the target TA activation condition.

[0104] In some embodiments, the preset time parameter may include a second time length and a first preset condition, and the first time range may be determined by defining the second time length after the terminal device satisfies the first preset condition as the first time range.

[0105] For example, the first time range may be determined by a first timer, and the first timer may be started or restarted if the terminal device satisfies a first preset condition, and the duration of the first timer may be a second time length, and if it is within the operating time range of the first timer, it may be determined that the current time of the terminal device is within the first time range, that is, it may be determined that the terminal device satisfies the TA activation condition.

[0106] The above-mentioned first pre-set condition may include one or more of the following conditions:

[0107] Condition 1. The terminal device receives the first message sent by the network device.

[0108] For example, upon receiving a first message sent by a network device, the first timer described above may be started or restarted based on the second time length.

[0109] Condition 2. The current time on the terminal device is equal to the second absolute time.

[0110] Here, the second absolute time may be determined by the terminal device based on time parameters received from the network device.

[0111] For example, if the current time on the terminal device is equal to the second absolute time, the first timer described above may be started or restarted based on the second time length.

[0112] Condition 3. The terminal device determines that it satisfies the TA activation conditions based on pre-configured signal condition information.

[0113] Condition 4. The terminal device determines that it satisfies the TA activation conditions based on pre-configured location condition information.

[0114] For example, if a terminal device triggers a target event, the first timer described above may be started or restarted based on the second time length. The target event may include an event corresponding to condition 3 or condition 4 described above.

[0115] In this way, the terminal device determines whether or not it satisfies the TA activation conditions based on pre-configured time condition information, and if it is determined that the terminal device satisfies the TA activation conditions, the pre-configured time condition information corresponds to candidate Based on the TA, the target TA can be determined.

[0116] When the above method is adopted, the terminal device determines whether or not it satisfies the TA activation conditions based on one or more of the above first condition information, and if it is determined that the terminal device satisfies the TA activation conditions, the corresponding first condition information candidate The target TA may be determined based on the TA.

[0117] In some embodiments, if a terminal device satisfies any one of the above first condition information, the corresponding first condition information candidate The target TA may be determined based on the TA. For example, candidate You can use TA as the target TA.

[0118] In some other embodiments, if a terminal device satisfies multiple of the above first condition information, the multiple first condition information corresponding to candidate The target TA may be determined based on the TA. For example, it may correspond to multiple first condition information. candidate The average, maximum, or minimum value of TA may be used as the target TA.

[0119] In this way, the terminal device can determine the target TA based on various conditional information and access the target access point (e.g., a target cell or target beam) based on the target TA.

[0120] In some embodiments of the present disclosure, the terminal device may perform uplink transmission based on the uplink channel resource parameters if it has further determined the uplink channel resource parameters and determined the target TA to be used to access the target access point based on the first parameters.

[0121] As an example, a terminal device may perform uplink transmission via a target access point (target cell or target beam) based on the uplink channel resource parameters.

[0122] Here, the uplink channel resource parameter may include a parameter that indicates an uplink PUSCH (Physical Uplink Shared Channel) resource. The uplink PUSCH resource may be one of the available PUSCH resources provided by the network device, such as a reserved PUSCH resource.

[0123] In some embodiments, a terminal device may receive a second message transmitted by a network device, which may include uplink channel resource parameters. In this way, when a terminal device receives a second message transmitted by a network device, it may obtain the uplink channel resource parameters in the second message and determine an uplink PUSCH resource based on those uplink resource parameters. Here, the second message may be the same as or different from the first message.

[0124] There are several methods by which terminal devices perform uplink transmission based on uplink channel resource parameters, and examples are as follows:

[0125] In some embodiments, a terminal device may send an uplink RRC message based on the uplink channel resource parameters. The uplink RRC message may include an RRC reconfiguration completion message, an RRC reconfiguration failure message, or other RRC messages.

[0126] In some other embodiments, the terminal device may transmit uplink data based on the uplink channel resource parameters.

[0127] In some other embodiments, the terminal device may transmit uplink RRC messages and uplink data based on the uplink channel resource parameters.

[0128] In this way, once the target TA is determined, the terminal device may perform uplink transmission based on the uplink channel resource parameters, thereby reducing delays due to service interruptions caused by handover and improving data transmission efficiency.

[0129] Figure 4 is a process chart of an access method shown in one exemplary embodiment. As shown in Figure 4, the method may include the following S401 to S406.

[0130] In S401, the terminal device receives the first message sent by the network device.

[0131] The first message may be any message or data package that a network device sends to a terminal device. For example, the first message may be a message instructing the terminal device to perform a CHO handover, such as a CHO handover command message.

[0132] In some embodiments, the first message may include a first parameter corresponding to at least one candidate access point.

[0133] In some other embodiments, the first message may further include uplink channel resource parameters corresponding to at least one candidate access point.

[0134] In some other embodiments, the first message may further include a first parameter and an uplink channel resource parameter corresponding to at least one candidate access point.

[0135] In S402, the terminal device determines a first parameter corresponding to at least one candidate access point based on the first message.

[0136] Here, the first parameter may be used to instruct the terminal device to determine the timing advance (TA) used to access the candidate access point. For example, the first parameter may be used to instruct the terminal device to determine the timing advance (TA) used to access the candidate access point. The access point identifier may include an access point identifier and an access point TA parameter corresponding to each access point identifier. Furthermore, the access point TA parameter may include at least one candidate TA, and each candidate It may also include first condition information corresponding to TA.

[0137] In S403, the terminal device determines the uplink channel resource parameters corresponding to at least one candidate access point based on the first message.

[0138] In S404, the terminal device determines the target access point to be accessed.

[0139] The steps S402, S403, and S404 described above may be performed in any order or in parallel, and are not limited to these in this disclosure.

[0140] In S405, the terminal device determines the target timing advance (TA) used to access the target access point based on the first parameter, and determines the target uplink channel resource used to access the target access point based on the uplink channel resource parameter.

[0141] In S406, the terminal device accesses the target access point based on the target TA and target uplink channel resources.

[0142] As an example, a terminal device may use a target uplink channel resource (e.g., a PUSCH resource) to send an RRC reconfiguration completion message or uplink data to the target access point in order to access and communicate with the target access point based on the target TA.

[0143] In this way, terminal devices can access the target access point based on the target TA and target uplink channel resources, further reducing delays due to service interruptions caused by handover and improving data transmission efficiency.

[0144] Figure 5 is a process chart of an access method shown in one exemplary embodiment. This method can be applied to network devices in the above-described communication system. As shown in Figure 5, the method may include S501 and S502.

[0145] In S501, the network device determines a first parameter corresponding to at least one candidate access point.

[0146] Here, the candidate access point may include a target access point, and the access point may be a cell and / or a beam. For example, in one possible embodiment, the network device may determine a first parameter corresponding to at least one candidate cell, the candidate cell may include a target cell. In another possible embodiment, the network device may determine a first parameter corresponding to at least one candidate beam, the candidate beam may include a target beam. In yet another possible embodiment, the network device may determine a first parameter corresponding to at least one candidate cell and a candidate beam. The first parameter corresponding to the target access point may be used to instruct a terminal device to determine a timing advance (TA) used to access the target access point.

[0147] If the access point includes a cell, the candidate access point may include one or more serving cells and adjacent cells determined by the network device. The serving cell may be a cell that a terminal device is currently accessing or located in, for example, the serving cell may provide wireless communication services to the terminal device.

[0148] In some embodiments, the adjacent cell may include a cell with which a cell adjacency relationship has been established with the serving cell. In some other embodiments, the adjacent cell may include a cell whose distance from the serving cell is less than or equal to a preset adjacent cell distance threshold. In some other embodiments, the adjacent cell may include a cell with which a cell adjacency relationship has been established with the serving cell and whose distance from the serving cell is less than or equal to a preset adjacent cell distance threshold. In some even more embodiments, the adjacent cell may include a cell with which a cell adjacency relationship has been established with the serving cell, or a cell whose distance from the serving cell is less than or equal to a preset adjacent cell distance threshold. Here, the preset adjacent cell distance threshold may be any preset distance threshold.

[0149] If the access point includes beams, the candidate access point may include one or more of the serving beam and adjacent beams. The serving beam may be the beam that a terminal device is currently accessing or located in the area of, for example, the serving beam may provide wireless communication services to the terminal device.

[0150] Similarly, in some embodiments, the adjacent beam may include a beam with which a beam adjacency relationship has been established with the serving beam. In some other embodiments, the adjacent beam may include a beam whose distance from the serving beam is less than or equal to a preset adjacent beam distance threshold. In some other embodiments, the adjacent beam may include a beam with which a beam adjacency relationship has been established with the serving beam, and whose distance from the serving beam is less than or equal to a preset adjacent beam distance threshold. In some even more embodiments, the adjacent beam may include a beam with which a beam adjacency relationship has been established with the serving beam, or a beam whose distance from the serving beam is less than or equal to a preset adjacent beam distance threshold. Here, the preset adjacent beam distance threshold may be any preset distance threshold.

[0151] In S502, the network device sends a first message to the terminal device based on the first parameter.

[0152] Here, the first message may include the first parameter described above, which may be used to determine the target timing advance (TA) used to access the target access point when attempting to access the target access point, and to instruct the terminal device to access the target access point based on the target TA.

[0153] The terminal device may decide whether or not to attempt to access the target access point based on pre-configured conditions. These pre-configured conditions may include handover conditions, RRC (Radio Resource Control) reconfiguration conditions, or other conditions, and the methods by which the terminal device accesses the target access point may include, but are not limited to, handover-based access, RRC reconfiguration-based access, or direct access.

[0154] For example, when a terminal device receives a handover command sent by a network device, it may attempt to access the target access point based on the instructions of the handover command, that is, it may initiate handover access to the target access point based on the instructions of the handover command.

[0155] Furthermore, for example, a terminal device may attempt to access the target access point itself if the handover conditions are met based on the CHO process; in other words, it may initiate handover access to the target access point based on the CHO process.

[0156] By employing the above method, a network device can determine a first parameter corresponding to at least one candidate access point and send a first message to a terminal device based on the first parameter. Here, the candidate access point may include a target access point, the access point may include cells and / or beams, and the first message may include a first parameter which, when attempting to access the target access point, is used to determine the target timing advance (TA) to be used to access the target access point and instructs the terminal device to access the target access point based on the target TA. In this way, the network device can determine the target TA based on the first parameter and instruct the terminal device to access the target access point based on the target TA, thereby saving the time required to determine the target TA by the random access process, reducing handover delays, and improving data transmission efficiency in the handover process.

[0157] Figure 6 is a process chart of a method by which a network device, as shown in one exemplary embodiment, determines a first parameter. As shown in Figure 6, the method may include the following S601-S603.

[0158] In S601, the network device determines the access point identifier of at least one candidate access point.

[0159] Here, the access point identifier may include one or more of the cell identifier and beam identifier. For example, the cell identifier may include a CGI (Cell Global Identifier), and the beam identifier may be determined by a TCI (Transmission Configuration Indication).

[0160] In S602, the network device determines the access point TA parameters corresponding to each access point identifier.

[0161] Here, the access point TA parameters may be parameters pre-configured by the network device. For example, the network device may pre-configure at least one access point identifier and the access point TA parameters corresponding to each access point identifier.

[0162] In some embodiments, the access point identifier may include a cell identifier, and the access point TA parameters may include cell TA parameters. In some other embodiments, the access point identifier may include a beam identifier, and the access point TA parameters may include beam TA parameters. In some other embodiments, the access point identifier may include both a cell identifier and a beam identifier, and the access point TA parameters may include both cell TA parameters and beam TA parameters.

[0163] In S603, the network device obtains the first parameter based on the access point identifier and access point TA parameters.

[0164] In this way, the network device may determine a first parameter corresponding to at least one candidate access point.

[0165] In some embodiments, the above access point TA parameters are: candidate TA may be included. candidate The TA may be used to instruct a terminal device to obtain the TA length corresponding to the access point identifier.

[0166] For example, candidate The TA may include the access point TA length (which may be any number greater than or equal to 0) or the access point TAG identifier; in other words, the above access point TA parameters may include the access point TA length or the access point TAG identifier. In this way, the terminal device candidate The length of the target TA corresponding to the target access point identifier may be determined based on the TA (or access point TA parameters). For example, the TA length of the target TA may be the access point TA length corresponding to the target access point identifier, or the TA length of the target TA may be determined based on the access point TAG identifier corresponding to the target access point identifier.

[0167] In some embodiments, the above candidate TA is TA offset N TA It may also include an offset.

[0168] In some other embodiments, the above access point TA parameters are at least one candidate TA, and each candidate It may also include first condition information corresponding to TA.

[0169] As an example, a network device may obtain access point TA parameters using the following method.

[0170] First, at least one corresponding to the access point identifier candidate Obtain a TA (Technical Assistant) certification.

[0171] Next, each candidate Determine the first condition information corresponding to TA.

[0172] lastly, candidate Based on the TA and first condition information, the access point TA parameters are determined.

[0173] The first condition information described above includes one or more of the following: pre-set signal condition information, pre-set position condition information, and pre-set time condition information. Each of these will be explained below.

[0174] Information 1. Pre-set signal condition information The pre-configured signal condition information may be used to instruct a terminal device to determine whether or not it meets the TA activation conditions based on the detected wireless signal strength of the target access point.

[0175] For example, if the first condition information includes pre-configured signal condition information, the TA activation condition includes the fact that the wireless signal strength of the target access point detected by the terminal device is within the target signal strength range, and the target signal strength range is the signal strength range determined based on the pre-configured signal condition information.

[0176] In some embodiments, if the first condition information includes pre-configured signal condition information, the TA activation condition includes the radio signal strength of the target access point detected by the terminal device being within a target signal strength range, where the target signal strength range may be within a signal strength range determined based on the pre-configured signal condition information. Here, the radio signal strength may include RSRP or RSSI detected by the terminal device.

[0177] Information 2. Pre-set location condition information The pre-configured location condition information may be used to instruct the terminal device to determine whether or not the terminal device meets the TA activation conditions based on the terminal device's location information.

[0178] In some embodiments, if the first condition information includes pre-set position condition information, the pre-set position condition information includes at least one first candidate It may include cells. The TA activation condition is that the serving cell of the terminal device is at least one of the first of the above. candidate This may include the fact that it is contained within a cell.

[0179] As an example, the preset location condition information is determined based on the preset location condition information, at least one first candidate Determine the cell, and the serving cell is the first candidate If included in a cell, it may be used to instruct the terminal device to determine that the terminal device meets the TA activation conditions. This corresponds to the pre-set location condition information. candidate Based on the TA, the target TA can be determined.

[0180] In some other embodiments, if the first condition information includes pre-set position condition information, the pre-set position condition information includes at least one second candidate Cell, and each second candidate It may include a first distance parameter corresponding to the cell. The TA activation condition is the terminal device and the second candidateThis may include the condition that the first distance to the antenna corresponding to the cell is less than or equal to a first distance threshold, where the first distance threshold is a distance threshold determined based on a first distance parameter.

[0181] As an example, the pre-set location condition information determines a first distance threshold based on a first distance parameter, and the terminal device and second candidate If the distance to the cell is less than or equal to the first distance threshold, it is determined that the terminal device satisfies the TA activation condition and the pre-configured location condition information is corresponding candidate It may also be used to instruct a terminal device to determine a target TA based on the TA.

[0182] In some other embodiments, if the first condition information includes pre-configured location condition information, the pre-configured location condition information includes pre-configured location parameters and second distance parameters, the TA activation condition includes that the second distance between the terminal device and the pre-configured location is less than or equal to the second distance threshold, the pre-configured location is a geographical location determined based on the pre-configured location parameters, and the second distance threshold is a distance threshold determined based on the second distance parameter.

[0183] For example, the pre-set location condition information determines a second distance threshold based on a second distance parameter, and if the distance between the terminal device and the pre-set location is less than or equal to the second distance threshold, it is determined that the terminal device satisfies the TA activation condition, and the pre-set location condition information corresponds to candidate It may be used to instruct a terminal device to determine a target TA based on the TA. Here, the preset position is a preset position parameter. The geographical location may be determined based on the meter.

[0184] Information 3. Pre-set time condition information The pre-configured time condition information may be used to instruct a terminal device to determine whether or not it meets the TA activation conditions based on the access start time.

[0185] For example, if the first condition information includes pre-configured time condition information, the pre-configured time condition information includes pre-configured time parameters, the TA activation condition includes the current time of the terminal device being within the first time range, and the first time range is a time range determined based on the pre-configured time parameters.

[0186] In some embodiments, the preset time parameters include a first absolute time and a first time length. The first time range may be determined by a method for determining the first time range based on the first absolute time and the first time length.

[0187] In some embodiments, the preset time parameter includes a second time length and a first preset condition, and the first time range may be determined by defining the first time range as the second time length after the terminal device satisfies the first preset condition.

[0188] The above-mentioned first pre-set condition may include one or more of the following conditions:

[0189] Condition 1. The terminal device receives the first message sent by the network device.

[0190] Condition 2. The current time on the terminal device is equal to the second absolute time.

[0191] Here, the second absolute time may be a time determined based on time parameters transmitted by the network device to the terminal device.

[0192] Condition 3. The terminal device determines that it satisfies the TA activation conditions based on pre-configured signal condition information.

[0193] Condition 4. The terminal device determines that it satisfies the TA activation conditions based on pre-configured location condition information.

[0194] When the above method is adopted, the network device instructs the terminal device to determine whether the terminal device satisfies the TA activation conditions based on one or more of the above first condition information, and if it is determined that the terminal device satisfies the TA activation conditions, the corresponding first condition information candidate The target TA may be determined based on the TA.

[0195] In some embodiments of this disclosure, a network device may determine uplink channel resource parameters and, based on those parameters, send a second message to a terminal device.

[0196] Here, the second message may include uplink channel resource parameters. These uplink channel resource parameters may be used to instruct a terminal device to perform uplink transmission based on the uplink channel resource parameters, after determining the target TA to be used to access the target access point based on the first parameter.

[0197] The second message may be the same as the first message, or it may be different.

[0198] The uplink channel resource parameter may include a parameter for indicating an uplink PUSCH resource. The uplink PUSCH resource may be one of the available PUSCH resources provided by the network device, such as a reserved PUSCH resource.

[0199] In some embodiments, a network device may instruct a terminal device to send uplink RRC messages based on the uplink channel resource parameters, thereby enabling the network device to receive uplink RRC messages sent by the terminal device based on the uplink channel resource parameters. The uplink RRC messages may include RRC reconfiguration completion messages, RRC reconfiguration failure messages, or other RRC messages.

[0200] In some other embodiments, a network device may instruct a terminal device to transmit uplink data based on the uplink channel resource parameters, and in this way, the network device can receive uplink data transmitted by the terminal device based on the uplink channel resource parameters.

[0201] In some other embodiments, a network device may instruct a terminal device to transmit uplink RRC messages and uplink data based on the uplink channel resource parameters, thereby enabling the network device to receive uplink RRC messages and uplink data transmitted by the terminal device based on the uplink channel resource parameters.

[0202] In this way, once the target TA is determined, the network device can instruct the terminal device to perform uplink transmission based on the uplink channel resource parameters, thereby reducing delays due to service interruptions caused by handover and improving data transmission efficiency.

[0203] Figure 7 is a process chart of an access method shown in one exemplary embodiment. As shown in Figure 7, the method may include the following steps S701 and S702.

[0204] In S701, the network device determines a first parameter and an uplink channel resource parameter corresponding to at least one candidate access point.

[0205] In S702, the network device sends a first message to the terminal device based on the first parameter and the uplink channel resource parameter.

[0206] Here, the first message may include the first parameter and the uplink channel resource parameter, the candidate access point may include a target access point, and the access point may include a cell and / or beam. The first parameter corresponding to the target access point may be used to instruct the terminal device to determine the timing advance (TA) used to access the target access point. The uplink channel resource parameter corresponding to the target access point may be used to instruct the terminal device to perform uplink transmission based on the uplink channel resource parameter after determining the target TA used to access the target access point based on the first parameter.

[0207] As an example, the uplink channel resource parameter may include a parameter for indicating the uplink PUSCH resource.

[0208] In this way, network devices can instruct terminal devices to access the target access point based on the target TA and target uplink channel resources, thereby further reducing delays due to service interruptions caused by handovers and improving data transmission efficiency.

[0209] Figure 8 is a process chart of an access method shown in one exemplary embodiment. As shown in Figure 8, the method may include the following S801 to S805.

[0210] In S801, the network device determines a first parameter corresponding to at least one candidate access point.

[0211] Here, the candidate access point may include a target access point, and the access point may include cells and / or beams. The first parameter corresponding to the target access point may be used to instruct a terminal device to determine the timing advance (TA) used to access the target access point.

[0212] In S802, the network device sends a first message to the terminal device based on the first parameter.

[0213] In S803, the terminal device, in response to receiving a first message sent by a network device, determines a first parameter corresponding to at least one candidate access point.

[0214] In S804, once the target access point to be accessed is determined, the terminal device determines the target timing advance (TA) used to access the target access point based on the first parameter.

[0215] In S805, terminal devices access the target access point based on the target TA.

[0216] The specific implementation details of the above steps can be found in the descriptions of the embodiments in this disclosure, so they will not be explained in detail here.

[0217] In this way, the terminal device can determine the target TA based on the first parameter transmitted by the network device and access the target access point based on the target TA, thereby saving the time required to determine the target TA through a random access process, reducing handover delays, and improving data transmission efficiency in the handover process.

[0218] Figure 9 is a block diagram of an access device 900 shown in one exemplary embodiment. The access device can be applied to a terminal device. As shown in Figure 9, the device 900 is A first decision module 901 configured to determine first parameters corresponding to at least one candidate access point, wherein the candidate access point includes a target access point, and the access point includes a cell and / or beam, the first decision module 901 A second determination module 902 is configured to determine the target timing advance (TA) used to access the target access point based on the first parameter, The system may also include an access module 903 configured to access the target access point based on the target TA.

[0219] In some embodiments, the first decision module 901 is configured to receive a first message transmitted by a network device, the first message comprising the first parameters corresponding to at least one of the candidate access points.

[0220] In some embodiments, the first parameter includes an access point identifier for at least one of the candidate access points, and an access point TA parameter corresponding to each of the access point identifiers, and the second determination module 902 determines a target access point TA parameter corresponding to a target access point identifier based on the first parameter, where the target access point identifier is an access point identifier corresponding to the target access point to be accessed, and is configured to determine the target TA based on the target access point TA parameter.

[0221] In some embodiments, the target access point TA parameter is at least one candidate TA, and the aforementioned candidate The second determination module 902 includes first condition information corresponding to the TA, and based on the first condition information, determines whether the terminal device satisfies the TA activation conditions, and if it is determined that the terminal device satisfies the TA activation conditions, the second determination module 902 includes first condition information corresponding to the TA, and determines whether the terminal device satisfies the TA activation conditions, candidate The system is configured to determine the target TA based on the TA.

[0222] In some embodiments, the above first condition information is Pre-configured signal condition information for instructing the terminal device to determine whether the terminal device meets the TA activation conditions based on the detected wireless signal strength of the target access point, Based on the location information of the terminal device, pre-configured location condition information for instructing the terminal device to determine whether or not the terminal device satisfies the TA activation conditions, This includes at least one of the following: pre-configured time condition information for instructing the terminal device to determine whether the terminal device satisfies the TA activation conditions based on the access start time.

[0223] In some embodiments, if the first condition information includes the preset signal condition information, the TA activation condition includes the wireless signal strength being within the target signal strength range, and the target signal strength range is a signal strength range determined based on the preset signal condition information.

[0224] In some embodiments, if the first condition information includes pre-set position condition information, the pre-set position condition information is at least one first candidate The TA activation condition includes a cell, and the TA activation condition is that the serving cell of the terminal device is at least one of the first candidate This includes being contained within a cell.

[0225] In some embodiments, if the first condition information includes pre-set position condition information, The pre-set location condition information is at least one second candidate Cell, and each of the preceding second candidate The TA activation condition includes a first distance parameter corresponding to the cell, and the terminal device and the second candidate This includes the condition that a first distance from the antenna corresponding to the cell is less than or equal to a first distance threshold, wherein the first distance threshold is a distance threshold determined based on the first distance parameter.

[0226] In some embodiments, if the first condition information includes pre-configured location condition information, the pre-configured location condition information includes pre-configured location parameters and second distance parameters, the TA activation condition includes that the second distance between the terminal device and the pre-configured location is less than or equal to a second distance threshold, the pre-configured location is a geographical location determined based on the pre-configured location parameters, and the second distance threshold is a distance threshold determined based on the second distance parameter.

[0227] In some embodiments, if the first condition information includes pre-configured time condition information, the pre-configured time condition information includes pre-configured time parameters, the TA activation condition includes that the current time of the terminal device is within a first time range, and the first time range is a time range determined based on the pre-configured time parameters.

[0228] In some embodiments, the preset time parameters include a first absolute time and a first time length, and the first time range is The first time range is determined by a method for determining the first time range based on the first absolute time and the first time length.

[0229] In some embodiments, the preset time parameter includes a second time length, and the first time range is The first time range is determined by a method in which the second time period after the terminal device satisfies the first pre-set condition is defined as the first time range. Here, the first pre-set condition is, Conditions for receiving the first message transmitted by a network device, The condition that the current time of the terminal device is equal to a second absolute time, and the second absolute time is the time the terminal device received the data from the network device. Based on the aforementioned pre-set signal condition information, the conditions under which the terminal device is determined to satisfy the TA activation conditions, and The system includes one or more conditions that determine whether the terminal device satisfies the TA activation conditions, based on the aforementioned pre-set location condition information.

[0230] In some embodiments, the access point TA parameters include the access point TA length or the access point timing advance group (TAG) identifier, and the step of determining the target access point TA parameters corresponding to the target access point identifier based on the first parameter is: The process includes determining the length of the target TA corresponding to the target access point identifier based on the access point TA parameters.

[0231] Figure 10 is a block diagram of an access device shown in one exemplary embodiment. As shown in Figure 10, the device 900 may further include a first decision module 901. The aforementioned first decision module 901 is further configured to determine uplink channel resource parameters, The transmission module 904 is further configured to perform uplink transmission based on the uplink channel resource parameters when a target TA used to access the target access point is determined based on the first parameter.

[0232] In some embodiments, the first decision module 901 is configured to receive a second message transmitted by a network device, the second message including the uplink channel resource parameters.

[0233] In some embodiments, the transmission module 904 is configured to transmit uplink radio resource control (RRC) messages based on the uplink channel resource parameters and / or to transmit uplink data based on the uplink channel resource parameters.

[0234] In some embodiments, the access module 903 is configured to access the target access point based on the target TA using a random access channel-less (RACH-less) scheme.

[0235] Figure 11 is a block diagram of an access device 1100 shown in one exemplary embodiment. The access device can be applied to a terminal device. As shown in Figure 11, the device 1100 is A third decision module 1101 configured to determine a first parameter corresponding to at least one candidate access point, wherein the candidate access point includes a target access point and the third decision module 1101, A first transmitting module 1102 configured to send a first message to a terminal device based on the first parameter, the first message including the first parameter, which is used to determine the target timing advance (TA) used to access the target access point when attempting to access the target access point, and to instruct the terminal device to access the target access point based on the target TA, the access point may include the first transmitting module 1102 including cells and / or beams.

[0236] In some embodiments, the third decision module 1101 is configured to determine the access point identifier of at least one candidate access point, determine the access point TA parameter corresponding to each of the access point identifiers, and obtain a first parameter based on the access point identifier and the access point TA parameter.

[0237] In some embodiments, the third decision module 1101 has at least one corresponding to the access point identifier candidate Obtain TA and each of the above candidate Determine the first condition information corresponding to TA, and candidate The system is configured to determine the access point TA parameters based on the TA and the first condition information.

[0238] In some embodiments, the above first condition information is Pre-configured signal condition information for instructing the terminal device to determine whether the terminal device meets the TA activation conditions based on the detected wireless signal strength of the target access point, Based on the location information of the terminal device, pre-configured location condition information for instructing the terminal device to determine whether or not the terminal device satisfies the TA activation conditions, The system includes at least one of the following: pre-configured time condition information for instructing the terminal device to determine whether the terminal device satisfies the TA activation conditions based on the access start time.

[0239] In some embodiments, if the first condition information includes the preset signal condition information, the TA activation condition includes the radio signal strength of the target access point detected by the terminal device being within the target signal strength range, the target signal strength range being a signal strength range determined based on the preset signal condition information.

[0240] In some embodiments, if the first condition information includes pre-set position condition information, the pre-set position condition information is at least one first candidate The TA activation condition includes a cell, and the TA activation condition is that the serving cell of the terminal device is at least one of the first candidate This includes being contained within a cell.

[0241] In some embodiments, if the first condition information includes pre-set position condition information, the pre-set position condition information includes at least one second candidate Cell, and each of the preceding second candidate The TA activation condition includes a first distance parameter corresponding to the cell, and the terminal device and the second candidate This includes the condition that a first distance from the antenna corresponding to the cell is less than or equal to a first distance threshold, wherein the first distance threshold is a distance threshold determined based on the first distance parameter.

[0242] In some embodiments, when the first condition information includes preset position condition information, the preset position condition information includes a preset position parameter and a second distance parameter, the TA activation condition includes that a second distance between the terminal device and a preset position is not more than a second distance threshold, the preset position is a geographical position determined based on the preset position parameter, and the second distance threshold is a distance threshold determined based on the second distance parameter.

[0243] In some embodiments, when the first condition information includes preset time condition information, the preset time condition information includes a preset time parameter, the TA activation condition includes that the current time of the terminal device is within a first time range, and the first time range is a time range determined based on the preset time parameter.

[0244] In some embodiments, the access point TA parameter includes an access point TA length or an access point timing advance group (TAG) identifier.

[0245] FIG. 12 is a block diagram of an access device 1100 shown in one exemplary embodiment. As shown in FIG. 12, the device 1100 may further include a fourth determination module 1103. The fourth determination module 1103 is further configured to determine uplink channel resource parameters. The first transmission module 1102 is further configured to transmit a second message to the terminal device based on the uplink channel resource parameters. The second message includes the uplink channel resource parameters. The uplink channel resource parameters are used to instruct the terminal device to perform uplink transmission based on the uplink channel resource parameters after determining a target TA used to access the target access point based on the first parameter.

[0246] The specific manner in which each module operates in the above embodiment is described in detail in the embodiment of this method and will not be explained in detail here.

[0247] Figure 13 is a block diagram of an access device shown in one exemplary embodiment. The access device 2000 may be a terminal device in the communication system shown in Figure 1, or it may be a network device in the communication system.

[0248] Referring to Figure 13, the device 2000 may include one or more components, such as a processing component 2002, a memory 2004, and a communication component 2006.

[0249] The processing component 2002 may be used to control the overall operation of the device 2000, such as display, telephone calls, data communication, camera operation, and recording operation. The processing component 2002 may include one or more processors 2020 that execute instructions to complete all or part of the steps of the access method described above. Furthermore, the processing component 2002 may include one or more modules to facilitate interaction between the processing component 2002 and other components. For example, the processing component 2002 may include a multimedia module to facilitate interaction between a multimedia component and the processing component 2002.

[0250] Memory 2004 is configured to store various types of data to support the operation of the device 2000. Examples of this data include instructions for any application or method running on the device 2000, contact data, phonebook data, messages, images, videos, etc. Memory 2004 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 memory, flash memory, magnetic disk, or optical disk.

[0251] The communication component 2006 is configured to facilitate wired or wireless communication between the device 2000 and other devices. The device 2000 may access wireless networks based on communication standards such as Wi-Fi, 2G, 3G, 4G, 5G, 6G, NB-IoT, eMTC, or a combination thereof. In one exemplary embodiment, the communication component 2006 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component 2006 further 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.

[0252] In exemplary embodiments, the apparatus 2000 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 access methods described above.

[0253] The above-described apparatus 2000 may be an independent electronic device or part of an independent electronic device. For example, in one embodiment, the electronic device may be an integrated circuit (IC) or a chip, where the integrated circuit may be a single IC or a collection of multiple ICs. The chip may be a GPU (Graphics Processing Unit), a CPU (Central Processing Unit), an FPGA (Field Programmable Gate Array), a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), or a SOC (System on Chip). The above-described integrated circuit or chip may be used to execute executable instructions (or code) to realize the above-described access method. The executable instructions may be stored in the integrated circuit or chip or obtained from other devices. For example, the integrated circuit or chip may include a processor, memory, and interfaces for communicating with other devices. The executable instruction may be stored in the processor, and when executed by the processor, it implements the access method described above, or the integrated circuit or chip may receive the executable instruction through the interface and transmit it to the processor for execution in order to implement the access method described above.

[0254] In exemplary embodiments, the Disclosure further provides a computer-readable storage medium storing computer program instructions, which, when executed by a processor, realize the steps of the access method according to the Disclosure. For example, the computer-readable storage medium may be a non-temporary computer-readable storage medium containing instructions, for example, the memory 2004 containing instructions, which may be executed by the processor 2020 of the device 2000 to complete the access method. For example, the non-temporary computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, flexible disk, optical data storage device, etc.

[0255] In some other embodiments, a computer program product is provided, which includes a computer program executable by a programmable device, the computer program having a code portion for performing the access method described above when executed by the programmable device.

[0256] Several other embodiments of this disclosure are readily conceivable to those skilled in the art after practicing this specification and this disclosure. This application is intended to encompass any variations, uses or adaptations of this disclosure, including common or customary technical means known in the art not disclosed herein, in accordance with the general principles of this disclosure. The specification and examples are to be considered illustrative, and the true scope and spirit of this disclosure are shown by the following claims.

[0257] This disclosure is not limited to the exact structure described above and shown in the drawings, and it should be understood that various modifications and changes are possible without departing from its scope. The scope of this disclosure is limited only to the attached claims.

Claims

1. An access method, which is applied to a terminal device, and the method is A step of determining a first parameter corresponding to at least one candidate access point, wherein the candidate access point includes a target access point, the candidate access point is a candidate cell and / or a candidate beam, and the first parameter includes an access point identifier of at least one candidate access point, and an access point timing advance (TA) parameter corresponding to each of the access point identifiers. A step of determining a target access point TA parameter corresponding to a target access point identifier based on the first parameter, wherein the target access point identifier is an access point identifier corresponding to the target access point to be accessed, The steps include determining whether the terminal device satisfies the TA activation conditions corresponding to the target access point TA parameters, If it is determined that the terminal device satisfies the TA activation conditions, the step of determining the target TA to be used to access the target access point based on the target access point TA parameters, The step of accessing the target access point based on the target TA includes, An access method characterized by the following:

2. The step of determining a first parameter corresponding to at least one candidate access point is: A step of receiving a first message transmitted by a network device, the first message comprising the first parameter corresponding to at least one of the candidate access points, The access method described in feature 1.

3. The target access point TA parameter includes at least one candidate TA and first condition information corresponding to the candidate TA. The step of determining whether the terminal device satisfies the TA activation conditions corresponding to the target access point TA parameters is: The step includes determining whether the terminal device satisfies the TA activation conditions based on the first condition information, If it is determined that the terminal device satisfies the TA activation conditions, the step of determining the target TA to be used to access the target access point based on the target access point TA parameters is: If it is determined that the terminal device satisfies the TA activation conditions, the process includes determining the target TA based on the candidate TA corresponding to the first condition information. The access method described in feature 1.

4. The aforementioned first condition information is, Pre-configured signal condition information for instructing the terminal device to determine whether the terminal device meets the TA activation conditions based on the detected wireless signal strength of the target access point, Based on the location information of the terminal device, pre-configured location condition information for instructing the terminal device to determine whether or not the terminal device satisfies the TA activation conditions, Includes at least one of the following: a set of time condition information for instructing the terminal device to determine whether the terminal device satisfies the TA activation conditions based on the access start time; The access method according to feature 3.

5. If the first condition information includes the preset signal condition information, the TA activation condition includes the wireless signal strength being within the target signal strength range, and the target signal strength range is the signal strength range determined based on the preset signal condition information. The access method described in feature 4.

6. If the first condition information includes pre-configured location condition information, the pre-configured location condition information includes at least one first candidate cell, and the TA activation condition includes the serving cell of the terminal device being included in the at least one first candidate cell. The access method described in feature 4.

7. If the first condition information includes pre-configured position condition information, the pre-configured position condition information includes at least one second candidate cell and a first distance parameter corresponding to each of the second candidate cells, the TA activation condition includes that the first distance between the terminal device and the antenna corresponding to the second candidate cell is less than or equal to a first distance threshold, and the first distance threshold is a distance threshold determined based on the first distance parameter. The access method described in feature 4.

8. If the first condition information includes pre-configured location condition information, the pre-configured location condition information includes pre-configured location parameters and second distance parameters, the TA activation condition includes that the second distance between the terminal device and the pre-configured location is less than or equal to a second distance threshold, the pre-configured location is a geographical location determined based on the pre-configured location parameters, and the second distance threshold is a distance threshold determined based on the second distance parameter. The access method described in feature 4.

9. If the first condition information includes pre-configured time condition information, the pre-configured time condition information includes pre-configured time parameters, the TA activation condition includes that the current time of the terminal device is within a first time range, and the first time range is the pre-configured time condition information. This is a time range determined based on the set time parameters. The access method described in feature 4.

10. The aforementioned preset time parameters include a first absolute time and a first time length, and the aforementioned first time range is Determined by a method for determining the first time range based on the first absolute time and the first time length, The access method described in feature 9.

11. The aforementioned preset time parameter includes a second time length, and the aforementioned first time range is The first time range is determined by a method in which the second time length after the terminal device satisfies the first pre-set condition is defined as the first time range. The first pre-set condition is, Conditions for receiving the first message transmitted by a network device, The condition that the current time of the terminal device is equal to a second absolute time, and the second absolute time is the time the terminal device received the data from the network device. Based on the aforementioned pre-set signal condition information, the conditions under which the terminal device is determined to satisfy the TA activation conditions, and Based on the aforementioned pre-set location condition information, the terminal device is determined to satisfy the TA activation conditions, including one or more of the conditions, The access method described in feature 9.

12. The aforementioned access point TA parameters include the access point TA length or the access point timing advance group (TAG) identifier. The step of determining the target access point TA parameter corresponding to the target access point identifier based on the first parameter is: The step includes determining the target TA length corresponding to the target access point identifier based on the access point TA parameters, The access method described in feature 1.

13. The aforementioned method, The steps include determining the uplink channel resource parameters, If a target TA used to access the target access point is determined based on the first parameter, the further step includes performing an uplink transmission based on the uplink channel resource parameter, The access method described in feature 1.

14. The step of determining the uplink channel resource parameters is: A step of receiving a second message transmitted by a network device, the second message including the uplink channel resource parameters, The access method according to feature 13.

15. The step of performing uplink transmission based on the aforementioned uplink channel resource parameters is: The steps of transmitting an uplink radio resource control (RRC) message based on the uplink channel resource parameters, and / or The process includes the step of transmitting uplink data based on the aforementioned uplink channel resource parameters, The access method according to feature 13.

16. The step of accessing the target access point based on the target TA is: The step includes accessing the target access point based on the target TA using a random access channel-less (RACH-less) scheme, The access method described in feature 1.

17. An access method, which is applied to a network device, and the method is A step of determining a first parameter corresponding to at least one candidate access point, wherein the candidate access point includes a target access point, the candidate access point includes a candidate cell and / or a candidate beam, and the first parameter includes an access point identifier of at least one candidate access point, and an access point timing advance (TA) parameter corresponding to each of the access point identifiers, A step of sending a first message to a terminal device based on the first parameter, the first message includes the first parameter, which, when attempting to access a target access point, determines a target access point TA parameter corresponding to a target access point identifier based on the first parameter, determines whether the terminal device satisfies the TA activation conditions corresponding to the target access point TA parameter, and, if it is determined that the terminal device satisfies the TA activation conditions, determines a target TA to be used to access the target access point based on the target access point TA parameter, and instructs the terminal device to access the target access point based on the target TA, wherein the target access point identifier is an access point identifier corresponding to the target access point to be accessed. An access method characterized by the following:

18. The step of determining a first parameter corresponding to at least one candidate access point is: The steps include determining the access point identifier of at least one of the candidate access points, The steps include determining the access point TA parameters corresponding to each of the aforementioned access point identifiers, The step of obtaining a first parameter based on the access point identifier and the access point TA parameter includes: The access method according to feature 17.

19. The step of determining the access point TA parameters corresponding to each of the aforementioned access point identifiers is: The steps include obtaining at least one candidate TA corresponding to the aforementioned access point identifier, The steps include determining first condition information corresponding to each candidate TA, The step of determining the access point TA parameters based on the candidate TA and the first condition information includes: The access method according to feature 18.

20. The aforementioned first condition information is, Pre-configured signal condition information for instructing the terminal device to determine whether the terminal device meets the TA activation conditions based on the detected wireless signal strength of the target access point, Based on the location information of the terminal device, pre-configured location condition information for instructing the terminal device to determine whether or not the terminal device satisfies the TA activation conditions, Includes at least one of the following: a set of time condition information for instructing the terminal device to determine whether the terminal device satisfies the TA activation conditions based on the access start time; The access method according to feature 19.

21. If the first condition information includes the preset signal condition information, the TA activation condition includes the wireless signal strength of the target access point detected by the terminal device being within the target signal strength range, and the target signal strength range is the signal strength range determined based on the preset signal condition information. The access method according to feature 20.

22. If the first condition information includes pre-configured location condition information, the pre-configured location condition information includes at least one first candidate cell, and the TA activation condition includes the serving cell of the terminal device being included in the at least one first candidate cell. The access method according to feature 20.

23. If the first condition information includes pre-configured position condition information, the pre-configured position condition information includes at least one second candidate cell and a first distance parameter corresponding to each of the second candidate cells, the TA activation condition includes that the first distance between the terminal device and the antenna corresponding to the second candidate cell is less than or equal to a first distance threshold, and the first distance threshold is a distance threshold determined based on the first distance parameter. The access method according to feature 20.

24. If the first condition information includes pre-configured location condition information, the pre-configured location condition information includes pre-configured location parameters and second distance parameters, the TA activation condition includes that the second distance between the terminal device and the pre-configured location is less than or equal to a second distance threshold, the pre-configured location is a geographical location determined based on the pre-configured location parameters, and the second distance threshold is a distance threshold determined based on the second distance parameter. The access method according to feature 20.

25. If the first condition information includes pre-configured time condition information, the pre-configured time condition information includes pre-configured time parameters, the TA activation condition includes that the current time of the terminal device is within a first time range, and the first time range is a time range determined based on the pre-configured time parameters. The access method according to feature 20.

26. The aforementioned access point TA parameters include the access point TA length or the access point timing advance group (TAG) identifier. The access method according to feature 18.

27. The aforementioned method, The steps include determining the uplink channel resource parameters, The process further includes sending a second message to a terminal device based on the uplink channel resource parameter, wherein the second message includes the uplink channel resource parameter, and the uplink channel resource parameter is used to instruct the terminal device to perform uplink transmission based on the uplink channel resource parameter after a target TA used to access the target access point has been determined based on the first parameter. The access method according to feature 17.

28. An access device, which is applied to a terminal device, the device, A first decision module configured to determine a first parameter corresponding to at least one candidate access point, wherein the candidate access point is a target access point The candidate access points include a point, and the candidate access points are candidate cells and / or candidate beams, and the first parameter is a first decision module including an access point identifier of at least one candidate access point, and an access point timing advance (TA) parameter corresponding to each of the access point identifiers, A second decision module is configured to determine a target access point TA parameter corresponding to a target access point identifier based on the first parameter, determine whether the terminal device satisfies the TA activation conditions corresponding to the target access point TA parameter, and, if it is determined that the terminal device satisfies the TA activation conditions, determine a target TA to be used to access the target access point based on the target access point TA parameter, wherein the target access point identifier is an access point identifier corresponding to the target access point to be accessed. Includes an access module configured to access the target access point based on the target TA, An access device characterized by the following features.

29. An access device, which is applied to a network device, the device, A third decision module configured to determine a first parameter corresponding to at least one candidate access point, wherein the candidate access point includes a target access point, the candidate access point includes a candidate cell and / or a candidate beam, and the first parameter includes an access point identifier of at least one candidate access point, and an access point timing advance (TA) parameter corresponding to each of the access point identifiers. A first transmission module configured to send a first message to a terminal device based on the first parameter, wherein the first message includes the first parameter, which, when attempting to access a target access point, determines a target access point TA parameter corresponding to a target access point identifier based on the first parameter, determines whether the terminal device satisfies the TA activation conditions corresponding to the target access point TA parameter, and, if it is determined that the terminal device satisfies the TA activation conditions, determines a target TA to be used to access the target access point based on the target access point TA parameter, and instructs the terminal device to access the target access point based on the target TA, wherein the target access point identifier is an access point identifier corresponding to the target access point to be accessed. An access device characterized by the following features.

30. Access device, Processor and Includes memory for storing instructions that can be executed by the processor, The processor is configured to perform the steps of the access method described in any one of claims 1 to 16, or the processor is configured to perform the steps of the access method described in any one of claims 17 to 27. An access device characterized by the following features.

31. A computer-readable storage medium storing computer program instructions, wherein, when the computer program instructions are executed by a processor, the steps of the access method described in any one of claims 1 to 16 are realized, or, when the computer program instructions are executed by a processor, the steps of the access method described in any one of claims 17 to 27 are realized. A computer-readable storage medium characterized by the following features.

32. It's a tip, Including a processor and interfaces, The processor performs a step of the access method described in any one of claims 1 to 16 by reading an instruction, or the processor performs a step of the access method described in any one of claims 17 to 27 by reading an instruction. A chip characterized by the following features.

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