CN113141667A

CN113141667A - Random access method, information processing method, device, terminal and network side equipment

Info

Publication number: CN113141667A
Application number: CN202010055417.3A
Authority: CN
Inventors: 谢芳; 刘光毅
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2021-07-20
Anticipated expiration: 2040-01-17
Also published as: CN113141667B

Abstract

The embodiment of the invention provides a random access method, an information processing method, a device, a terminal and network side equipment, wherein the method comprises the following steps: under the condition that part or all of CHO configuration of the terminal is unavailable, cell selection is carried out; if the target cell selected by the terminal belongs to a first CHO candidate target base station or cell configured by CHO, adopting a CHO configuration corresponding to the first CHO candidate target base station or cell or a random access resource in the CHO configuration to access the target cell; in the embodiment of the invention, when the terminal triggers the reconstruction process, the terminal is quickly accessed to the CHO candidate target base station or cell according to the CHO configuration, or the terminal reports the relevant information of the CHO configuration in the reconstruction process or after the reconstruction is completed, so that other CHO candidate target base stations or cells can be helped to release the special random access resource reserved for the terminal as soon as possible, or the CHO candidate target base stations or cells which are unavailable in the CHO configuration are helped to optimize the subsequent configuration.

Description

Random access method, information processing method, device, terminal and network side equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a random access method, an information processing method, an apparatus, a terminal, and a network device.

Background

Conditional Handover (CHO) is a mechanism for enhancing robustness of a handover process, and avoids that when a channel between a terminal and a serving cell is suddenly degraded (especially at a high frequency or when the terminal moves at a high speed), the terminal cannot normally complete the handover process. Therefore, the base station can configure that the terminal triggers the measurement report at a lower threshold, a higher threshold for triggering the switching is carried in the switching command, the terminal can also carry the random access resource used by the terminal in the target cell, and once the switching threshold is met, the terminal initiates the random access process to the target base station.

After the terminal receives the CHO configuration information carried in the reconfiguration information, it will detect the availability (company check) of the CHO information. If some configurations of the CHO are detected to be unavailable, for example, the terminal cannot identify a Random Access Channel (RACH) opportunity (RO) label of a Random Access Channel (RACH) resource configured by a candidate target cell, a Bandwidth part (BWP) where the terminal does not support dedicated Random Access resources, or a related configuration of the CHO exceeds the terminal capability, the terminal may directly trigger a reconstruction process.

Because the reconstruction process is initiated by the terminal itself and the source cell is not notified, the source cell does not know when and why the terminal initiates the reconstruction process, and cannot further know which CHO configurations are unavailable, so that the candidate target cell cannot avoid similar problems or optimize in subsequent CHO configurations; moreover, all candidate target cells do not know that the terminal has left, and also continue to reserve a Cell-radio network temporary identifier (C-RNTI) and random access resources for the terminal, which causes a waste of network side resources.

On the other hand, since the first step of the reestablishment procedure is cell selection, the terminal may select a candidate target cell configured in the previous source cell for CHO, and access the target cell by using a contention-based access procedure according to the existing mechanism. This may cause collisions, reducing the effectiveness of the random access and increasing the delay of the random access procedure.

Disclosure of Invention

Embodiments of the present invention provide a random access method, an information processing method, an apparatus, a terminal, and a network device, so as to solve a problem in the prior art that a speed of random access of a terminal is slow or a problem of resource waste at a network side when a CHO configuration cannot trigger a terminal re-establishment procedure.

In order to achieve the above object, the present invention provides a random access method applied to a terminal, including:

under the condition that the Conditional Handover (CHO) configuration of the terminal is partially or completely unavailable, carrying out cell selection;

and if the target cell selected by the terminal belongs to a first CHO candidate target base station or cell configured by CHO, accessing the target cell by adopting a CHO configuration or a random access resource in the CHO configuration corresponding to the first CHO candidate target base station or cell.

Wherein, the CHO configuration corresponding to the first CHO candidate target base station or cell is available, or the random access resource in the CHO configuration corresponding to the first CHO candidate target base station or cell is available.

Wherein, the random access resource in the CHO configuration corresponding to the first CHO candidate target base station or cell is: the first CHO candidate target base station or the cell is a special random access resource configured for the terminal.

The embodiment of the invention also provides an information processing method, which is applied to a terminal and comprises the following steps:

and sending the related information of the conditional switching CHO configuration to the first network side equipment.

Wherein the information relating to the CHO configuration comprises an indication that the CHO configuration is partially or fully unavailable.

Wherein, the related information of the CHO configuration is carried by a radio resource control RRC reestablishment request or a radio link failure RLF report or a target message.

Wherein the RRC reestablishment request or RLF report or target message further carries:

a reason for reestablishment or a reason for connection failure or a reason for radio link failure, the reason for reestablishment or the reason for connection failure or the reason for radio link failure being: the CHO configuration is partially or totally unavailable.

Wherein the CHO configuration related information comprises at least one of:

identification information of CHO candidate target base stations or cells;

a special cell radio network temporary identifier C-RNTI reserved for the terminal by the CHO candidate target base station or the cell;

CHO configures unavailable frequency point information of CHO candidate target base stations or cells;

CHO configures unavailable identification information of CHO candidate target base station or cell;

CHO configures unavailable CHO candidate target base station or C-RNTI reserved for terminal by cell;

CHO candidate target base stations or cells for which the CHO configuration is not available.

Wherein the unavailability information of the CHO candidate target base stations for which the CHO configuration is unavailable comprises at least one of:

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

The embodiment of the invention also provides an information processing method, which is applied to the first network side device and comprises the following steps:

and receiving the information related to the conditional switch CHO configuration sent by the terminal.

Wherein the CHO configuration related information comprises at least one of:

identification information of CHO candidate target base stations or cells;

Wherein the unavailability information of the CHO candidate target base station or cell for which the CHO configuration is unavailable comprises at least one of:

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

An embodiment of the present invention further provides an information processing method, applied to a first network side device or a second network side device, including:

and sending first indication information to third network side equipment, wherein the first indication information is used for indicating that the terminal is rebuilt to or connected to the first network side equipment, and the first indication information carries identification information of the terminal.

Wherein, the first indication information also carries the relevant information of the conditional switch CHO configuration of the terminal.

Wherein the CHO configuration related information comprises at least one of:

identification information of CHO candidate target base stations or cells;

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

The embodiment of the present invention further provides an information processing method, which is applied to a third network side device, and includes:

receiving first indication information sent by first network side equipment or second network side equipment; the first indication information is used for indicating a terminal to be rebuilt to or connected to a first network side device, and the first indication information carries identification information of the terminal.

Wherein the method further comprises:

and releasing the special random access resource reserved for the terminal according to the first indication information.

Wherein the CHO configuration related information comprises at least one of:

identification information of CHO candidate target base stations or cells;

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

and sending second indication information to second network side equipment, wherein the second indication information is used for indicating the terminal to be rebuilt to or connected to the first network side equipment.

Wherein the second indication information carries: CHO configurations provide an indication that some or all are unavailable.

Wherein the indication that the CHO configuration is partially or fully unavailable is carried by a reestablishment reason or a connection failure reason.

Wherein the second indication information further carries: some or all of the information related to the CHO configuration of the terminal.

Wherein the second indication information further carries: identification information of the terminal.

Wherein the CHO configuration related information comprises at least one of:

identification information of CHO candidate target base stations or cells;

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

The embodiment of the invention also provides an information processing method, which is applied to second network side equipment and comprises the following steps:

and receiving second indication information sent by the first network side equipment, wherein the second indication information is used for indicating that the terminal is rebuilt to or connected to the first network side equipment.

Wherein the CHO configuration related information comprises at least one of:

identification information of CHO candidate target base stations or cells;

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

and sending fourth indication information to fourth network side equipment, wherein the fourth indication information is used for indicating that the CHO configuration of the fourth network side equipment is unavailable.

Wherein the fourth indication information carries at least one of:

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

The embodiment of the present invention further provides an information processing method, which is applied to a fourth network side device, and includes:

receiving fourth indication information sent by the first network side device or the second network side device, where the fourth indication information is used to indicate that the CHO configuration of the fourth network side device is unavailable.

Wherein the fourth indication information carries at least one of:

unavailability information of CHO candidate target base station or cell for which CHO configuration is unavailable

Wherein the method further comprises:

and optimizing the CHO configuration of the fourth network side equipment according to the fourth indication information.

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

The embodiment of the invention also provides a random access device, which is applied to a terminal and comprises the following components:

a selection module, configured to perform cell selection when a partial or complete CHO configuration for conditional handover of the terminal is unavailable;

and the access module is used for accessing the target cell by adopting the CHO configuration corresponding to the first CHO candidate target base station or cell or the random access resource in the CHO configuration if the target cell selected by the terminal belongs to the first CHO candidate target base station or cell configured by the CHO.

An embodiment of the present invention further provides a terminal, including a processor and a transceiver, where the transceiver receives and transmits data under the control of the processor, and the processor is configured to perform the following operations:

An embodiment of the present invention further provides an information processing apparatus, which is applied to a terminal, and includes:

the first sending module is configured to send information related to the conditional access CHO configuration to the first network side device.

An embodiment of the present invention further provides an information processing apparatus, which is applied to a first network side device, and includes:

the first receiving module is used for receiving the relevant information of the conditional switch CHO configuration sent by the terminal.

An embodiment of the present invention further provides a network-side device, where the network-side device is a first network-side device, and includes a processor and a transceiver, where the transceiver receives and transmits data under the control of the processor, and the processor is configured to perform the following operations:

An embodiment of the present invention further provides an information processing apparatus, which is applied to a first network side device or a second network side device, and includes:

the second sending module is configured to send first indication information to a third network side device, where the first indication information is used to indicate that a terminal is reestablished or connected to the first network side device, and the first indication information carries identification information of the terminal.

An embodiment of the present invention further provides a network-side device, where the network-side device is a second network-side device or a third network-side device, and includes a processor and a transceiver, where the transceiver receives and transmits data under the control of the processor, and the processor is configured to perform the following operations:

An embodiment of the present invention further provides an information processing apparatus, which is applied to a third network side device, and includes:

the second receiving module is used for receiving first indication information sent by the first network side equipment or the second network side equipment; the first indication information is used for indicating a terminal to be rebuilt to or connected to a first network side device, and the first indication information carries identification information of the terminal.

An embodiment of the present invention further provides a network-side device, where the network-side device is a third network-side device, and includes a processor and a transceiver, where the transceiver receives and transmits data under the control of the processor, and the processor is configured to perform the following operations:

a third sending module, configured to send second indication information to a second network side device, where the second indication information is used to indicate that the terminal is re-established to or connected to the first network side device, and the second network side device is a source base station of the terminal.

and sending second indication information to second network side equipment, wherein the second indication information is used for indicating that the terminal is rebuilt to or connected to the first network side equipment, and the second network side equipment is a source base station of the terminal.

An embodiment of the present invention further provides an information processing apparatus, which is applied to a second network side device, and includes:

a third receiving module, configured to receive second indication information sent by a first network-side device, where the second indication information is used to indicate that the terminal is reestablished or connected to the first network-side device.

An embodiment of the present invention further provides a network-side device, where the network-side device is a second network-side device, and the network-side device includes a processor and a transceiver, where the transceiver receives and transmits data under the control of the processor, and the processor is configured to perform the following operations:

a fourth sending module, configured to send fourth indication information to a fourth network side device, where the fourth indication information is used to indicate that a CHO configuration of the fourth network side device is unavailable; the fourth indication information carries unavailable information of the CHO configuration of the fourth network side device.

An embodiment of the present invention further provides a network-side device, where the network-side device is a first network-side device or a second network-side device, and includes a processor and a transceiver, where the transceiver receives and transmits data under the control of the processor, and the processor is configured to perform the following operations:

sending fourth indication information to fourth network side equipment, wherein the fourth indication information is used for indicating that the CHO configuration of the fourth network side equipment is unavailable; the fourth indication information carries unavailable information of the CHO configuration of the fourth network side device.

An embodiment of the present invention further provides an information processing apparatus, which is applied to a fourth network device, and includes:

a fourth receiving module, configured to receive fourth indication information sent by the first network-side device or the second network-side device, where the fourth indication information is used to indicate that a CHO configuration of the fourth network-side device is unavailable; the fourth indication information carries unavailable information of the CHO configuration of the fourth network side device.

An embodiment of the present invention further provides a network-side device, where the network-side device is a fourth network-side device, and the network-side device includes a processor and a transceiver, where the transceiver receives and transmits data under the control of the processor, and the processor is configured to perform the following operations:

receiving fourth indication information sent by a first network side device or a second network side device, where the fourth indication information is used to indicate that a CHO configuration of the fourth network side device is unavailable; the fourth indication information carries unavailable information of the CHO configuration of the fourth network side device.

The embodiment of the invention also provides communication equipment, which comprises a memory, a processor and a program which is stored on the memory and can be run on the processor, wherein the processor realizes the random access method when executing the program; alternatively, the processor implements the information processing method as described above when executing the program.

An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps in the random access method as described above; alternatively, the program realizes the steps in the information processing method as described above when executed by a processor.

The technical scheme of the invention at least has the following beneficial effects:

in the random access method, the information processing method, the device, the terminal and the network side equipment of the embodiments of the present invention, when the CHO configuration of the terminal is partially or completely unavailable, the terminal is quickly accessed to the CHO candidate target base station or the cell according to the CHO configuration when triggering the reconstruction process, or the terminal reports the relevant information of the CHO configuration during the reconstruction process or after the reconstruction is completed, which can help other CHO candidate target base stations or cells to release the dedicated random access resource reserved for the terminal as soon as possible, or help the CHO candidate target base station or the cell unavailable to the CHO configuration to optimize the subsequent configuration.

Drawings

Fig. 1 is a flowchart illustrating steps of a random access method according to an embodiment of the present invention;

FIG. 2 is a flow chart illustrating steps of an information processing method according to an embodiment of the present invention;

FIG. 3 is a flowchart illustrating a second step of the information processing method according to the embodiment of the present invention;

FIG. 4 is a flowchart illustrating a third step of an information processing method according to an embodiment of the present invention;

FIG. 5 is a flowchart illustrating a fourth step of the information processing method according to the embodiment of the present invention;

FIG. 6 is a flowchart illustrating a fifth step of an information processing method according to an embodiment of the present invention;

FIG. 7 is a flowchart illustrating a sixth step of an information processing method according to an embodiment of the present invention;

FIG. 8 is a flow chart illustrating a seventh step of an information processing method according to an embodiment of the present invention;

FIG. 9 is a flowchart illustrating an eighth step of an information processing method according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a random access apparatus according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of an information processing apparatus according to an embodiment of the present invention;

fig. 13 is a second schematic structural diagram of an information processing apparatus according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of a network-side device according to an embodiment of the present invention;

fig. 15 is a third schematic structural diagram of an information processing apparatus according to an embodiment of the present invention;

FIG. 16 is a fourth schematic view of an information processing apparatus according to an embodiment of the present invention;

FIG. 17 is a fifth schematic view of an information processing apparatus according to an embodiment of the present invention;

FIG. 18 is a sixth schematic view showing a configuration of an information processing apparatus according to an embodiment of the present invention;

fig. 19 is a seventh schematic diagram showing a configuration of an information processing apparatus according to an embodiment of the present invention;

fig. 20 is an eighth schematic diagram of the structure of the information processing apparatus according to the embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, an embodiment of the present invention provides a random access method, which is applied to a terminal, and includes:

and step 11, under the condition that the conditional switching CHO configuration of the terminal is partially or completely unavailable, carrying out cell selection.

In this step, the CHO configuration of the terminal is configured for the terminal by the network side device, and when the terminal finds that the CHO configuration has a problem that part or all of the CHO configuration is unavailable, a reconstruction flow is initiated, wherein the first step is to perform cell selection.

And step 12, if the target cell selected by the terminal belongs to a first CHO candidate target base station or cell configured by CHO, adopting a CHO configuration corresponding to the first CHO candidate target base station or cell or a random access resource in the CHO configuration to access the target cell.

In this step, the CHO configuration of the terminal includes a plurality of CHO candidate target base stations or cells. If the target cell selected by the terminal belongs to one of the CHO candidate target base stations or cells configured by the CHO (e.g., the first CHO candidate target base station or cell), the terminal accesses the target cell by using the CHO configuration corresponding to the first CHO candidate target base station or cell, or the terminal accesses the target cell by using the random access resource in the CHO configuration corresponding to the first CHO candidate target base station or cell.

And if the target cell selected by the terminal is not one of the CHO candidate target base stations or the cells configured by the CHO, the terminal initiates a random access process based on competition, so as to access the target cell.

Optionally, the CHO configuration corresponding to the first CHO candidate target base station or cell is available, or the random access resource in the CHO configuration corresponding to the first CHO candidate target base station or cell is available.

As an optional embodiment, the random access resource in the CHO configuration corresponding to the first CHO candidate target base station or cell is: the first CHO candidate target base station or the cell is a special random access resource configured for the terminal.

Because the first CHO candidate target base station or the cell configures the special random access resource for the terminal, the terminal uses the special random access resource to access the target cell, thereby reducing collision and improving the random access speed.

In the embodiment of the invention, under the condition that part or all of CHO configuration of the terminal is unavailable, if the target cell selected by the terminal triggering the reconstruction process is a CHO candidate target base station or cell, a special random access resource can be adopted to access the cell, so that the random access speed of the terminal can be improved.

As shown in fig. 2, an embodiment of the present invention further provides an information processing method, which is applied to a terminal, and includes:

step 21, sending the relevant information of the conditional access CHO configuration to the first network side device.

Optionally, the first network-side device reconstructs the terminal to the target base station or the target cell. The terminal sends the relevant information of the CHO configuration to the first network side device after the reestablishment process or the reestablishment is completed, for example, the relevant information of the CHO configuration is carried by a radio resource control RRC reestablishment request or a radio link failure RLF report or a target message.

The target message may be an existing other message or a newly defined message, and is not specifically limited herein.

As an alternative embodiment, the information relating to the CHO arrangement comprises an indication that the CHO arrangement is partially or fully unavailable.

As another optional embodiment, the RRC reestablishment request or RLF report or target message further carries:

As another alternative, the CHO configuration related information comprises at least one of:

identification information of CHO candidate target base stations or cells; e.g. physical cell identity PCI or NR cell global identity NCGI; identification information of CHO candidate target base stations or cells with available CHO configuration and identification information of CHO candidate target base stations or cells with unavailable CHO configuration may be included;

CHO configures unavailable identification information of CHO candidate target base station or cell; e.g. physical cell identity PCI or NR cell global identity NCGI;

Optionally, the unavailable information (i.e. specific unavailable information) of the CHO candidate target base stations unavailable for the CHO configuration includes at least one of:

a random access preamble (preamble code);

a random access opportunity (RO);

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

In the embodiment of the invention, the terminal reports the relevant information of the CHO configuration in the reconstruction process or after the reconstruction is completed, so that the network side can release the special random access resource configured for the terminal and/or optimize the subsequent configuration of the CHO according to the relevant information of the CHO configuration.

As shown in fig. 3, an embodiment of the present invention provides an information processing method, applied to a first network device, including:

and step 31, receiving the relevant information of the conditional access CHO configuration sent by the terminal. Optionally, the first network-side device reconstructs the terminal to the target base station or the cell. The terminal sends the relevant information of the CHO configuration to the first network side device after the reestablishment process or the reestablishment is completed, for example, the relevant information of the CHO configuration is carried by a radio resource control RRC reestablishment request or a radio link failure RLF report or a target message.

a random access preamble (preamble code);

a random access opportunity (RO);

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

As shown in fig. 4, an embodiment of the present invention further provides an information processing method, applied to a first network-side device or a second network-side device, including:

step 41, sending first indication information to a third network side device, where the first indication information is used to indicate that a terminal is reestablished or connected to the first network side device, and the first indication information carries identification information of the terminal.

Optionally, the first network-side device is a target base station or a target cell reconstructed by the terminal, and the second network-side device is a source base station or a source cell accessed before the terminal initiates a reconstruction process. The third network side device is a CHO candidate target base station or cell contained in the CHO configuration. It should be noted that, if the target base station or the target cell reconstructed by the terminal is one of the first CHO candidate target base stations or cells, the third network side device is another CHO candidate target base station or cell except the first CHO candidate target base station or cell.

For example, the identification information of the terminal carried by the first indication information is a dedicated C-RNTI allocated to the terminal by the corresponding CHO candidate target base station or cell, so as to facilitate the CHO candidate target base station or cell to identify the terminal.

As an optional embodiment, the first indication information further carries information related to a conditional handover, CHO, configuration of the terminal.

Wherein the CHO configuration related information comprises at least one of:

a random access preamble (preamble code);

a random access opportunity (RO);

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

In the embodiment of the invention, the terminal reports the relevant information of the CHO configuration to the first network side equipment in the reconstruction process or after the reconstruction is completed, and the first network side equipment or the second network side equipment sends the information to the third network side equipment, so that the third network side equipment can release the special random access resource configured for the terminal and/or optimize the subsequent configuration of the CHO according to the relevant information of the CHO configuration.

As shown in fig. 5, an embodiment of the present invention further provides an information processing method, which is applied to a third network device, and includes:

step 51, receiving first indication information sent by a first network side device or a second network side device; the first indication information is used for indicating a terminal to be rebuilt to or connected to a first network side device, and the first indication information carries identification information of the terminal.

Further, in the above embodiment of the present invention, the method further includes:

Wherein the CHO configuration related information comprises at least one of:

a random access preamble (preamble code);

a random access opportunity (RO);

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

In the embodiment of the present invention, the third network side device receives the first indication information, and releases the dedicated random access resource configured for the terminal and/or optimizes the subsequent configuration of the CHO according to the first indication information.

As shown in fig. 6, an embodiment of the present invention further provides an information processing method, which is applied to a first network device, and includes:

and 61, sending second indication information to a second network side device, where the second indication information is used to indicate that the terminal is rebuilt to or connected to the first network side device.

Optionally, the first network-side device is a target base station or a target cell reconstructed by the terminal, and the second network-side device is a source base station or a source cell accessed before the terminal initiates a reconstruction process.

Optionally, the second indication information carries: CHO configurations provide an indication that some or all are unavailable.

For example, the indication that the CHO configuration is partially or fully unavailable is carried by a reestablishment reason or a connection failure reason.

As an optional embodiment, the second indication information further carries: some or all of the information related to the CHO configuration of the terminal.

As another optional embodiment, the second indication information further carries: identification information of the terminal. For example, the identification information of the terminal carried by the second indication information is: and the source base station or the source cell allocates C-RNTI for the terminal or ShortMAC-I carried in the RRC reestablishment request, so that the second network side equipment can conveniently identify the terminal.

Wherein the CHO configuration related information comprises at least one of:

a random access preamble (preamble code);

a random access opportunity (RO);

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

In the embodiment of the invention, the terminal reports the relevant information of the CHO configuration to the first network side equipment in the reconstruction process or after the reconstruction is completed, and the first network side equipment indicates the completion of the terminal to the second network side equipment through the second indication information, so that the second network side equipment releases the relevant resources of the terminal.

As shown in fig. 7, an embodiment of the present invention further provides an information processing method, which is applied to a second network device, and includes:

step 71, receiving second indication information sent by the first network side device, where the second indication information is used to indicate that the terminal is rebuilt to or connected to the first network side device.

Wherein the CHO configuration related information comprises at least one of:

a random access preamble (preamble code);

a random access opportunity (RO);

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

As shown in fig. 8, an embodiment of the present invention further provides an information processing method, applied to a first network-side device or a second network-side device, including:

step 81, sending fourth indication information to a fourth network side device, where the fourth indication information is used to indicate that the CHO configuration of the fourth network side device is unavailable.

Optionally, the fourth indication information carries at least one of the following:

Optionally, the first network-side device is a target base station or a target cell reconstructed by the terminal, and the second network-side device is a source base station or a source cell accessed before the terminal initiates a reconstruction process. The fourth network side equipment configures unavailable CHO target candidate base stations or cells for CHO.

Wherein the unavailability information (i.e. specific unavailability information) of the CHO candidate target base station or cell for which the CHO configuration is unavailable comprises at least one of:

a random access preamble (preamble code);

a random access opportunity (RO);

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

In this embodiment of the present invention, the first network side device or the second network side device sends fourth indication information to the fourth network side device, where the fourth indication information is used to indicate that the CHO configuration of the fourth network side device is unavailable, and the fourth indication information carries unavailable information of the CHO configuration of the fourth network side device, so that the fourth network side device can release the dedicated random access resource configured for the terminal and/or optimize subsequent configuration of the CHO.

As shown in fig. 9, an information processing method provided in an embodiment of the present invention is applied to a fourth network device, and includes:

step 91, receiving fourth indication information sent by the first network side device or the second network side device, where the fourth indication information is used to indicate that the CHO configuration of the fourth network side device is unavailable.

Wherein the fourth indication information carries at least one of:

and optimizing the CHO configuration of the fourth network side equipment according to the fourth indication message.

a random access preamble (preamble code);

a random access opportunity (RO);

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

In order to more clearly describe the method provided by the embodiment of the present invention, a specific process is described below with reference to an example.

For example, it is assumed that the first network-side device is a target cell, the second network-side device is a source cell, the third network-side device is a CHO candidate target cell, and the fourth network-side device configures an unavailable CHO candidate target cell for CHO.

1. The terminal finds that the CHO configured by the source base station or the source cell has partial or unavailable problems, and initiates a reconstruction flow, wherein the first step is cell selection.

2. And if the target cell selected by the terminal is not one of the candidate target cells of the CHO, initiating a random access process based on competition.

3. If the target cell selected by the terminal is one of the candidate target cells of the CHO, and the CHO configuration of the cell is available or the random access configuration in the CHO configuration of the cell is available, the terminal accesses the cell by using the random access resource in the CHO configuration or the CHO configuration corresponding to the cell. When the CHO candidate target cell configures the special random access resource for the terminal, the speed of accessing the terminal into the target cell can be improved.

4. The terminal initiates an RRC reestablishment request to the target cell and may send an RLF report to the target cell after the reestablishment is completed. Wherein:

1) the terminal adds a reestablishment reason or a connection failure reason or a reason of the RLF in the RRC reestablishment request or the RLF report: the CHO configuration is not available.

2) The terminal reports information related to the CHO configuration, such as candidate target cell IDs (possibly including the IDs of available and unavailable candidate target cells) of the CHO, and the cell reserves a special C-RNTI for the UE; this is done to facilitate the target cell informing other candidate target cells to release the dedicated random access resources reserved for the UE.

3) The terminal reporting the detailed information that the CHO configuration is unavailable may include: the CHO configures the frequency point of an unavailable candidate target cell, the cell ID, the special C-RNTI reserved for the terminal by the cell, and specific unavailable information, such as part or all of preamble codes, RO opportunities, BWP, or super-terminal capability.

5. The target cell informs other CHO candidate target cells to which the terminal has been re-established or connected, wherein identification information of the terminal can be carried, such as a private C-RNTI allocated to the terminal by the candidate target cell; further, the candidate target cell may also be informed of all or part of the content of the relevant information that the configured CHO configuration for the terminal is unavailable.

6. The target cell informs the source cell that the terminal has been re-established to the target cell because the CHO configuration is not available.

7. The target cell sends all or part of the unavailable related information of the CHO configuration reported by the terminal to the source cell, wherein the unavailable related information can also carry the identification information of the terminal, such as C-RNTI allocated to the terminal by the source cell, ShortMAC-I carried in the RRC reestablishment request and the like, so that the source cell can conveniently identify the terminal.

8. After the source cell receives the information of the target cell, one of the following operations may be performed:

1) informing other CHO candidate target cells (namely target cells which are not required to be reselected by the terminal) that the terminal leaves and can release the special random access resource reserved for the terminal;

2) the CHO candidate target cell for which the CHO configuration is not available is informed that the CHO configuration is not available, or further carries specific unavailable information, such as some or all of preamble code, RO opportunity, BWP, or super terminal capability, etc.

9. And releasing the random access resource reserved for the terminal by other CHO candidate target cells according to the information sent by the target cell or the source cell, and/or optimizing subsequent related configuration according to the information unavailable in CHO configuration.

As shown in fig. 10, an embodiment of the present invention further provides a random access apparatus, which is applied to a terminal, and includes:

a selecting module 101, configured to perform cell selection when a partial or complete conditional access (CHO) configuration of the terminal is unavailable;

an access module 102, configured to, if a target cell selected by a terminal belongs to a first CHO candidate target base station or cell configured by a CHO, access the target cell by using a CHO configuration corresponding to the first CHO candidate target base station or cell or a random access resource in the CHO configuration.

Optionally, in the above embodiment of the present invention, a CHO configuration corresponding to the first CHO candidate target base station or cell is available, or a random access resource in the CHO configuration corresponding to the first CHO candidate target base station or cell is available.

Optionally, in the embodiment of the present invention, the random access resource in the CHO configuration corresponding to the first CHO candidate target base station or cell is: the first CHO candidate target base station or the cell is a special random access resource configured for the terminal.

In the embodiment of the invention, under the condition that part or all of the CHO configuration of the terminal is unavailable, if the target cell selected by the terminal triggering the reconstruction process is a CHO candidate target base station or cell, the random access speed of the terminal can be increased.

It should be noted that, the apparatus provided in the embodiments of the present invention is an apparatus capable of performing the random access method, and all embodiments of the random access method are applicable to the apparatus and can achieve the same or similar beneficial effects.

As shown in fig. 11, an embodiment of the present invention further provides a terminal, including a processor 110, a transceiver 120, and a user interface 130, where the transceiver 120 receives and transmits data under the control of the processor 110, and the processor 110 is configured to perform the following operations:

It should be noted that, the terminal provided in the embodiments of the present invention is a terminal capable of executing the random access method, and all embodiments of the random access method are applicable to the terminal, and can achieve the same or similar beneficial effects.

As shown in fig. 12, an embodiment of the present invention further provides an information processing apparatus, which is applied to a terminal, and includes:

the first sending module 121 is configured to send information related to conditional access CHO configuration to the first network-side device.

Optionally, in the above embodiment of the present invention, the information about the CHO configuration includes an indication that the CHO configuration is partially or completely unavailable.

Optionally, in the above embodiment of the present invention, the related information of the CHO configuration is carried by a radio resource control RRC reestablishment request, a radio link failure RLF report, or a target message.

Optionally, in the above embodiment of the present invention, the RRC reestablishment request or the RLF report or the target message further carries:

Optionally, in the above embodiment of the present invention, the information about the CHO configuration includes at least one of:

identification information of CHO candidate target base stations or cells;

Optionally, in the foregoing embodiment of the present invention, the unavailability information of the CHO candidate target base station where the CHO configuration is unavailable includes at least one of:

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

It should be noted that the apparatus provided by the embodiment of the present invention is an apparatus capable of executing the information processing method, and all embodiments of the information processing method are applicable to the apparatus and can achieve the same or similar beneficial effects.

identification information of CHO candidate target base stations or cells;

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

It should be noted that, the terminal provided in the embodiments of the present invention is a terminal capable of executing the information processing method, and all embodiments of the information processing method are applicable to the terminal and can achieve the same or similar beneficial effects.

As shown in fig. 13, an information processing apparatus according to an embodiment of the present invention is applied to a first network device, and includes:

the first receiving module 131 is configured to receive related information of the conditional access CHO configuration sent by the terminal.

identification information of CHO candidate target base stations or cells;

Optionally, in the foregoing embodiment of the present invention, the unavailable information of the CHO candidate target base station or cell for which the CHO configuration is unavailable includes at least one of the following:

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

As shown in fig. 14, an embodiment of the present invention further provides a network-side device, where the network-side device is a first network-side device, and includes a processor 141 and a transceiver 142, where the transceiver 142 receives and transmits data under the control of the processor 141, and the processor 141 is configured to perform the following operations:

identification information of CHO candidate target base stations or cells;

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

It should be noted that, the network side device provided in the embodiments of the present invention is a network side device capable of executing the information processing method, and all embodiments of the information processing method are applicable to the network side device and can achieve the same or similar beneficial effects.

As shown in fig. 15, an information processing apparatus according to an embodiment of the present invention is applied to a first network device or a second network device, and includes:

a second sending module 151, configured to send first indication information to a third network side device, where the first indication information is used to indicate that a terminal is reestablished or connected to the first network side device, and the first indication information carries identification information of the terminal.

Optionally, in the embodiment of the present invention, the first indication information further carries information related to a conditional access CHO configuration of the terminal.

identification information of CHO candidate target base stations or cells;

Optionally, in the foregoing embodiment of the present invention, the unavailability information of the CHO candidate target base station or the cell for which the CHO configuration is unavailable includes at least one of the following:

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

As shown in fig. 14, an embodiment of the present invention further provides a network-side device, where the network-side device is a second network-side device or a third network-side device, and includes a processor 141 and a transceiver 142, where the transceiver 142 receives and transmits data under the control of the processor 141, and the processor 141 is configured to perform the following operations:

identification information of CHO candidate target base stations or cells;

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

As shown in fig. 16, an information processing apparatus according to an embodiment of the present invention is applied to a third network device, and includes:

a second receiving module 161, configured to receive first indication information sent by a first network-side device or a second network-side device; the first indication information is used for indicating a terminal to be rebuilt to or connected to a first network side device, and the first indication information carries identification information of the terminal.

Optionally, in the above embodiment of the present invention, the apparatus further includes:

and the releasing module is used for releasing the special random access resource reserved for the terminal according to the first indication information.

identification information of CHO candidate target base stations or cells;

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

As shown in fig. 14, an embodiment of the present invention further provides a network-side device, where the network-side device is a third network-side device, and the network-side device includes a processor 141 and a transceiver 142, where the transceiver 142 receives and transmits data under the control of the processor 141, and the processor 141 is configured to perform the following operations:

Optionally, in the above embodiment of the present invention, the processor is further configured to:

identification information of CHO candidate target base stations or cells;

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

As shown in fig. 17, an embodiment of the present invention further provides an information processing apparatus, applied to a first network-side device, including:

a third sending module 171, configured to send second indication information to a second network-side device, where the second indication information is used to indicate that the terminal is re-established to or connected to the first network-side device.

Optionally, in the foregoing embodiment of the present invention, the second indication information carries: CHO configurations provide an indication that some or all are unavailable.

Optionally, in the above embodiment of the present invention, the indication that the CHO configuration is partially or completely unavailable is carried by a reestablishment reason or a connection failure reason.

Optionally, in the foregoing embodiment of the present invention, the second indication information further carries: some or all of the information related to the CHO configuration of the terminal.

Optionally, in the foregoing embodiment of the present invention, the second indication information further carries: identification information of the terminal.

identification information of CHO candidate target base stations or cells;

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

identification information of CHO candidate target base stations or cells;

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

As shown in fig. 18, an information processing apparatus according to an embodiment of the present invention is applied to a second network device, and includes:

a third receiving module 181, configured to receive second indication information sent by a first network-side device, where the second indication information is used to indicate that the terminal is reestablished or connected to the first network-side device.

identification information of CHO candidate target base stations or cells;

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

As shown in fig. 14, an embodiment of the present invention further provides a network-side device, where the network-side device is a second network-side device, and the network-side device includes a processor 141 and a transceiver 142, where the transceiver 142 receives and transmits data under the control of the processor 141, and the processor 141 is configured to perform the following operations:

identification information of CHO candidate target base stations or cells;

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

As shown in fig. 19, an embodiment of the present invention further provides an information processing apparatus, applied to a first network-side device or a second network-side device, including:

a fourth sending module 191, configured to send fourth indication information to a fourth network side device, where the fourth indication information is used to indicate that a CHO configuration of the fourth network side device is unavailable;

optionally, in the embodiment of the present invention, the fourth indication information carries at least one of the following:

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

As shown in fig. 14, an embodiment of the present invention further provides a network-side device, where the network-side device is a first network-side device or a second network-side device, and includes a processor 141 and a transceiver 142, where the transceiver 142 receives and transmits data under the control of the processor 141, and the processor 141 is configured to perform the following operations:

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

As shown in fig. 20, an information processing apparatus according to an embodiment of the present invention is applied to a fourth network device, and includes:

a fourth receiving module 210, configured to receive fourth indication information sent by the first network-side device or the second network-side device, where the fourth indication information is used to indicate that the CHO configuration of the fourth network-side device is unavailable.

and the optimization module is used for optimizing the CHO configuration of the fourth network side equipment according to the fourth indication information.

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

As shown in fig. 14, an embodiment of the present invention further provides a network-side device, where the network-side device is a fourth network-side device, and the network-side device includes a processor 141 and a transceiver 142, where the transceiver 142 receives and transmits data under the control of the processor 141, and the processor 141 is configured to perform the following operations:

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

An embodiment of the present invention further provides a communication device, where the communication device is a terminal, and the communication device includes a memory, a processor, and a computer program that is stored in the memory and is executable on the processor, and when the processor executes the program, the processor implements each process in the above-described embodiment of the random access method, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.

An embodiment of the present invention further provides a communication device, where the communication device is a network-side device, and includes a memory, a processor, and a computer program that is stored in the memory and is executable on the processor, and when the processor executes the program, the processor implements each process in the above-described information processing method embodiment, and can achieve the same technical effect, and details are not described here to avoid repetition.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements each process in the random access method embodiment described above, and can achieve the same technical effect, and details are not described here to avoid repetition. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements each process in the above-described information processing method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-readable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block or blocks.

These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A random access method applied to a terminal is characterized by comprising the following steps:

2. The method of claim 1, wherein a CHO configuration corresponding to the first CHO candidate target base station or cell is available, or wherein a random access resource in the CHO configuration corresponding to the first CHO candidate target base station or cell is available.

3. The method of claim 1, wherein the random access resources in the CHO configuration corresponding to the first CHO candidate target base station or cell are: the first CHO candidate target base station or the cell is a special random access resource configured for the terminal.

4. An information processing method applied to a terminal is characterized by comprising the following steps:

5. The method of claim 4, wherein the information relating to the CHO configuration includes an indication that the CHO configuration is partially or fully unavailable.

6. The method according to claim 4, wherein the CHO configuration related information is carried by a Radio Resource Control (RRC) reestablishment request or a Radio Link Failure (RLF) report or a target message.

7. The method of claim 6, wherein the RRC reestablishment request or the RLF report or the target message further carries:

8. The method according to claim 4, wherein the CHO configuration related information comprises at least one of:

identification information of CHO candidate target base stations or cells;

9. The method of claim 8, wherein the unavailability information of CHO candidate target base stations for which the CHO configuration is unavailable comprises at least one of:

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

10. An information processing method is applied to a first network side device, and is characterized by comprising the following steps:

11. The method of claim 10, wherein the information relating to the CHO configuration includes an indication that the CHO configuration is partially or fully unavailable.

12. The method according to claim 10, wherein the information related to the CHO configuration is carried by a Radio Resource Control (RRC) reestablishment request or a Radio Link Failure (RLF) report or a target message.

13. The method of claim 12, wherein the RRC reestablishment request or RLF report or target message further carries:

14. The method according to claim 10, wherein the information relating to the CHO configuration comprises at least one of:

identification information of CHO candidate target base stations or cells;

15. The method according to claim 14, wherein the information of unavailability of CHO candidate target base stations or cells for which the CHO configuration is unavailable comprises at least one of:

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

16. An information processing method is applied to a first network side device or a second network side device, and is characterized by comprising the following steps:

17. The method according to claim 16, wherein the first indication information further carries information related to Conditional Handover (CHO) configuration of the terminal.

18. The method according to claim 17, wherein the information relating to the CHO configuration comprises at least one of:

identification information of CHO candidate target base stations or cells;

19. The method of claim 18, wherein the unavailability information for CHO candidate target base stations or cells for which CHO configurations are unavailable comprises at least one of:

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

20. An information processing method is applied to a third network side device, and is characterized by comprising the following steps:

21. The method of claim 20, further comprising:

22. The method according to claim 20, wherein the first indication information further carries information related to Conditional Handover (CHO) configuration of the terminal.

23. The method according to claim 22, wherein the information relating to the CHO configuration comprises at least one of:

identification information of CHO candidate target base stations or cells;

24. The method of claim 23, wherein the information on unavailability of CHO candidate target base stations or cells for which the CHO configuration is unavailable comprises at least one of:

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

25. An information processing method is applied to a first network side device, and is characterized by comprising the following steps:

26. The method of claim 25, wherein the second indication information carries: CHO configurations provide an indication that some or all are unavailable.

27. The method of claim 25, wherein the indication that the CHO configuration is partially or fully unavailable is carried by a reestablishment reason or a connection failure reason.

28. The method of claim 25, wherein the second indication information further carries: some or all of the information related to the CHO configuration of the terminal.

29. The method of claim 25, wherein the second indication information further carries: identification information of the terminal.

30. The method according to claim 28, wherein the information relating to the CHO configuration comprises at least one of:

identification information of CHO candidate target base stations or cells;

31. The method of claim 30, wherein the information on unavailability of CHO candidate target base stations or cells for which the CHO configuration is unavailable comprises at least one of:

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

32. An information processing method is applied to a second network side device, and is characterized by comprising the following steps:

and receiving second indication information sent by the first network side equipment, wherein the second indication information is used for indicating the terminal to be rebuilt to or connected to the first network side equipment.

33. The method of claim 32, wherein the second indication information carries:

CHO configurations provide an indication that some or all are unavailable.

34. The method of claim 33, wherein the indication that the CHO configuration is partially or fully unavailable is carried by a reestablishment reason or a connection failure reason.

35. The method of claim 32, wherein the second indication information further carries: some or all of the information related to the CHO configuration of the terminal.

36. The method of claim 32, wherein the second indication information further carries: identification information of the terminal.

37. The method according to claim 35, wherein the CHO-configuration related information comprises at least one of:

identification information of CHO candidate target base stations or cells;

38. The method of claim 37, wherein the information on unavailability of CHO candidate target base stations or cells for which the CHO configuration is unavailable comprises at least one of:

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

39. An information processing method is applied to a first network side device or a second network side device, and is characterized by comprising the following steps:

40. The method of claim 39, wherein the fourth indication information carries at least one of:

41. The method of claim 40, wherein the information on unavailability of CHO candidate target base stations or cells for which CHO configurations are unavailable comprises at least one of:

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

42. An information processing method is applied to a fourth network side device, and is characterized by comprising the following steps:

43. The method of claim 42, wherein the fourth indication information carries at least one of:

44. The method of claim 43, further comprising:

45. The method of claim 43, wherein the unavailability information for CHO candidate target base stations or cells for which CHO configurations are unavailable comprises at least one of:

a random access preamble;

a random access opportunity;

a bandwidth part BWP;

the CHO configuration exceeds the terminal capabilities.

46. A random access apparatus applied to a terminal, comprising:

47. A terminal comprising a processor and a transceiver, the transceiver receiving and transmitting data under control of the processor, characterized in that the processor is adapted to:

48. An information processing apparatus applied to a terminal, comprising:

49. A terminal comprising a processor and a transceiver, the transceiver receiving and transmitting data under control of the processor, characterized in that the processor is adapted to:

50. An information processing apparatus applied to a first network side device, comprising:

51. A network side device, which is a first network side device and includes a processor and a transceiver, where the transceiver receives and transmits data under the control of the processor, and the processor is configured to:

52. An information processing apparatus applied to a first network side device or a second network side device, comprising:

53. A network side device, which is a second network side device or a third network side device, and includes a processor and a transceiver, where the transceiver receives and transmits data under the control of the processor, and the processor is configured to perform the following operations:

54. An information processing apparatus applied to a third network side device, comprising:

55. A network side device, which is a third network side device and includes a processor and a transceiver, where the transceiver receives and transmits data under the control of the processor, and the processor is configured to:

56. An information processing apparatus applied to a first network side device, comprising:

a third sending module, configured to send second indication information to a second network-side device, where the second indication information is used to indicate that a terminal is reestablished or connected to the first network-side device, and the second network-side device is a source base station of the terminal.

57. A network side device, which is a first network side device and includes a processor and a transceiver, where the transceiver receives and transmits data under the control of the processor, and the processor is configured to:

58. An information processing apparatus applied to a second network side device, comprising:

a third receiving module, configured to receive second indication information sent by a first network-side device, where the second indication information is used to indicate that a terminal is reestablished or connected to the first network-side device.

59. A network side device, which is a second network side device and includes a processor and a transceiver, where the transceiver receives and transmits data under the control of the processor, and the processor is configured to:

60. An information processing apparatus applied to a first network side device or a second network side device, comprising:

61. A network side device, which is a first network side device or a second network side device, comprising a processor and a transceiver, wherein the transceiver receives and transmits data under the control of the processor, and the processor is configured to perform the following operations:

62. An information processing apparatus applied to a fourth network side device, comprising:

63. A network side device, which is a fourth network side device and includes a processor and a transceiver, where the transceiver receives and transmits data under the control of the processor, and the processor is configured to:

64. A communication device comprising a memory, a processor, and a program stored on the memory and executable on the processor; wherein the processor, when executing the program, implements the random access method of any one of claims 1-3; or the processor, when executing the program, implements an information processing method as claimed in any one of claims 4 to 9 or any one of claims 10 to 15 or any one of claims 16 to 19 or any one of claims 20 to 24 or any one of claims 25 to 31 or any one of claims 32 to 38 or any one of claims 39 to 41 or any one of claims 42 to 45.

65. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the steps in the random access method according to any one of claims 1 to 3; or the program when executed by a processor implements the steps in the information processing method as claimed in any one of claims 4 to 9 or any one of claims 10 to 15 or any one of claims 16 to 19 or any one of claims 20 to 24 or any one of claims 25 to 31 or any one of claims 32 to 38 or any one of claims 39 to 41 or any one of claims 42 to 45.