CN112243276A

CN112243276A - Random access method, information sending method, resource configuration method, network side equipment and terminal

Info

Publication number: CN112243276A
Application number: CN201910655326.0A
Authority: CN
Inventors: 李男; 陈宁宇
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: 2019-07-19
Filing date: 2019-07-19
Publication date: 2021-01-19
Also published as: WO2021012991A1

Abstract

The invention provides a random access method, an information sending method, a resource allocation method, network side equipment and a terminal, wherein the random access method comprises the following steps: the terminal selects a first cell from the cell list for random access according to a cell selection strategy, wherein the cell selection strategy is at least related to whether the cell supports two-step random access. When the terminal determines the first cell according to the cell selection strategy, whether the first cell supports two-step random access or not is considered, so that the cell supporting the two-step random access can be preferentially taken as the first cell, and the random access efficiency is improved.

Description

Random access method, information sending method, resource configuration method, network side equipment and terminal

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method for random access, information transmission, resource configuration, a network device, and a terminal.

Background

Currently, a procedure for a terminal to initiate a Contention-based Random Access (CBRA) is roughly as follows: a terminal sends an uplink signal containing a Preamble sequence (namely, Preamble) on a resource of a Physical Random Access Channel (PRACH), which is called MSG 1; a terminal receives a Random Access Response (RAR) sent by a base station side, and the RAR is called MSG 2; the terminal sends uplink data on the uplink time-frequency resource indicated by the RAR, and the uplink data is called MSG 3; the terminal receives downlink data sent by the base station side, wherein the downlink data contains information related to contention resolution and is called MSG 4. The above procedure is called a 4-step Random Access Channel (RACH) procedure.

In order to reduce the random access delay, a 2-step RACH flow is introduced, and the 2-step RACH concentrates MSG 1 and MSG 3 in the original 4-step RACH into one step for transmission, namely MSG A; MSG 2 and MSG 4 are concentrated on one step transmission, called MSG B. However, for a terminal supporting two-step random access, when the terminal performs cell reselection or configuration condition handover, or when a network side device is handed over, a new cell accessed by the terminal may not support two-step random access, thereby affecting random access efficiency.

Disclosure of Invention

Embodiments of the present invention provide a random access method, an information sending method, a resource configuration method, a network side device and a terminal, so as to solve the problem that in the prior art, when a terminal supporting two-step random access performs cell reselection or configuration condition switching or network side device switching, a new cell accessed by the terminal may not support two-step random access, which affects random access efficiency.

In order to solve the technical problem, the invention is realized as follows:

in a first aspect, an embodiment of the present invention provides a random access method, configured to support a terminal with two-step random access, where the random access method includes:

selecting a first cell from the cell list for random access according to a cell selection policy, the cell selection policy being at least related to whether the cell supports two-step random access.

In a second aspect, an embodiment of the present invention provides an information sending method, where the information sending method is used for a network side device, and the information sending method includes:

and broadcasting a system message, wherein the system message carries random access type support information of the cell.

In a third aspect, an embodiment of the present invention provides a resource allocation method, where the resource allocation method is used for a first network device, and the resource allocation method includes:

determining a random access type when a terminal is switched to the first network side equipment according to a random access type determination strategy, wherein the random access type determination strategy is at least related to whether the terminal supports two-step random access;

and configuring random access resources for the terminal according to the determined random access type.

In a fourth aspect, an embodiment of the present invention provides an information sending method, used for a terminal, where the information sending method includes:

and sending the random access type support information of the terminal.

In a fifth aspect, an embodiment of the present invention provides a resource allocation method, where the resource allocation method is used for a first network device, and the resource allocation method includes:

In a sixth aspect, an embodiment of the present invention provides a terminal, where the terminal is configured to support two-step random access, and the terminal includes:

a selecting module, configured to select a first cell from the cell list for random access according to a cell selection policy, where the cell selection policy is at least related to whether the cell supports two-step random access.

In a seventh aspect, an embodiment of the present invention provides a terminal, where the terminal is configured to support two-step random access, and includes a processor and a transceiver:

the processor is configured to select a first cell from the cell list for random access according to a cell selection policy, where the cell selection policy is at least related to whether the cell supports two-step random access.

In an eighth aspect, an embodiment of the present invention provides a network side device, including:

and the broadcasting module is used for broadcasting system information, and the system information carries the random access type support information of the cell.

In a ninth aspect, an embodiment of the present invention provides a network-side device, including a processor and a transceiver,

the transceiver is used for broadcasting system information, and the system information carries random access type support information of a cell.

In a tenth aspect, an embodiment of the present invention provides a network-side device, where the network-side device is a first network-side device, and the network-side device includes:

a determining module, configured to determine a random access type when a terminal is switched to the first network-side device according to a random access type determination policy, where the random access type determination policy is at least related to whether the terminal supports two-step random access;

and the configuration module is used for configuring random access resources for the terminal according to the determined random access type.

In an eleventh aspect, an embodiment of the present invention provides a network-side device, where the network-side device is a first network-side device, and the network-side device includes a processor and a transceiver:

the processor is configured to determine a random access type when the terminal is switched to the first network-side device according to a random access type determination policy, where the random access type determination policy is at least related to whether the terminal supports two-step random access;

the processor is further configured to configure a random access resource for the terminal according to the determined random access type.

In a twelfth aspect, an embodiment of the present invention provides a terminal, including:

and the sending module is used for sending the random access type support information of the terminal.

In a thirteenth aspect, an embodiment of the present invention provides a terminal, including a processor and a transceiver:

the transceiver is configured to transmit random access type support information of the terminal.

In a fourteenth aspect, an embodiment of the present invention provides a network-side device, where the network-side device is a second network-side device, and the network-side device includes:

the first receiving module is used for receiving first random access type supporting information sent by a terminal;

a first sending module, configured to send the first random access type support information to an adjacent first network side device;

a second receiving module, configured to receive configuration information of the random access resource sent by the adjacent first network-side device; the configuration information of the random access resource is at least related to the first random access type supporting information;

and the second sending module is used for sending the configuration information of the random access resources to the terminal.

In a fifteenth aspect, an embodiment of the present invention 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:

the transceiver is used for receiving first random access type support information sent by a terminal;

the transceiver is further configured to send the first random access type support information to an adjacent first network side device;

the transceiver is further configured to receive configuration information of a random access resource sent by the adjacent first network-side device; the configuration information of the random access resource is at least related to the first random access type supporting information;

the transceiver is further configured to send configuration information of the random access resource to the terminal.

In a sixteenth aspect, an embodiment of the present invention provides a terminal, including a processor, a memory, and a computer program stored in the memory and being executable on the processor, where the computer program, when executed by the processor, implements the steps in the random access method according to the first aspect, or the computer program, when executed by the processor, implements the steps in the information sending method according to the fourth aspect.

In a seventeenth aspect, an embodiment of the present invention provides a network-side device, including a processor, a memory, and a computer program stored in the memory and being executable on the processor, where the computer program, when executed by the processor, implements the steps in the information sending method according to the second aspect, or the computer program, when executed by the processor, implements the steps in the resource configuration method according to the third aspect, or the computer program, when executed by the processor, implements the steps in the resource configuration method according to the fifth aspect.

Eighteenth aspect, the present invention 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 according to the first aspect, or the computer program, when executed by the processor, implements the steps in the information transmission method according to the second aspect, or the computer program, when executed by the processor, implements the steps in the resource configuration method according to the third aspect, or the computer program, when executed by the processor, implements the steps in the information transmission method according to the fourth aspect, or the computer program, when executed by the processor, implements the steps in the resource configuration method according to the fifth aspect.

In the embodiment of the invention, the terminal selects the first cell from the cell list for random access according to the cell selection strategy, wherein the cell selection strategy is at least related to whether the cell supports two-step random access. Thus, when the terminal determines the first cell according to the cell selection strategy, whether the first cell supports two-step random access or not is considered, so that the cell supporting two-step random access can be preferentially taken as the first cell, and the random access efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.

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

fig. 2 is a flowchart of an information sending method according to an embodiment of the present invention;

fig. 3 is a flowchart of a resource allocation method according to an embodiment of the present invention;

fig. 4 is a flowchart of another information sending method according to an embodiment of the present invention;

FIG. 5 is a flow chart of another resource allocation method provided by the embodiment of the invention;

fig. 6 is one of the structural diagrams of a terminal provided in the embodiment of the present invention;

fig. 7 is a second structural diagram of a terminal according to an embodiment of the present invention;

fig. 8 is a third structural diagram of a terminal according to an embodiment of the present invention;

fig. 9 is one of the structural diagrams of the network side device according to the embodiment of the present invention;

fig. 10 is a second block diagram of a network device according to the second embodiment of the present invention;

fig. 11 is a third structural diagram of a network-side device according to an embodiment of the present invention;

fig. 12 is a fourth structural diagram of a network-side device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, fig. 1 is a flowchart of a random access method provided in an embodiment of the present invention, for a terminal supporting two-step random access, as shown in fig. 1, the random access method includes the following steps:

step 101, selecting a first cell from the cell list for random access according to a cell selection policy, wherein the cell selection policy is at least related to whether the cell supports two-step random access.

Specifically, the cell list includes one or more cells, and a cell supporting two-step random access may exist in the cell list or may not exist in the cell list. The selected cell for random access is the first cell.

The cell selection policy may be: if the cell list includes cells supporting two-step random access, the cells supporting two-step random access have higher priority than the cells not supporting two-step random access. In other words, when a cell is selected according to the cell selection policy, a cell with a higher priority in the cell list is selected, so that when cells supporting two-step random access exist in the cell list, under the same other conditions, the terminal preferentially selects the cell supporting two-step random access as the first cell, and ensures that the first cell supports two-step random access, thereby improving the random access efficiency.

The cell selection policy may also be: and if the cells supporting the two-step random access exist in the cell list, selecting the first cell from the cells supporting the two-step random access. In other words, when cells supporting two-step random access exist in the cell list, the terminal directly selects the first cell from the cells supporting two-step random access, and the first cell is ensured to support two-step random access, so as to improve the random access efficiency. The cell selection policy may be a selection policy of the terminal at the time of cell selection or cell reselection.

In this embodiment, the first cell is a target cell for cell reselection, or the first cell is a target cell for conditional handover (conditional handover may also be understood as cell selection). This may be understood as that the first cell is a target cell determined by the terminal at the time of cell reselection or conditional handover.

That is to say, the method according to the embodiment of the present invention may be applied to a conditional handover procedure, and may also be applied to a cell reselection procedure.

The terminal sorts the alternative cells (which can be understood as cells in the cell list) from high to low according to the R criterion when the cell reselects or the condition is switched. If the sequencing result is A cell, B cell, C cell, D cell, E cell and F cell in sequence, and the cells higher than the R value minus the interval value (network configured interval value) of the A cell are B cell, C cell, D cell and E cell, if the terminal meets the standard of using two-step random access, the terminal preferentially selects the cells supporting the two-step random access from the A cell, the B cell, the C cell, the D cell and the E cell for access.

In this embodiment, a first cell is selected from the cell list for random access according to a cell selection policy, where the cell selection policy is at least related to whether the cell supports two-step random access, and thus, when determining the first cell according to the cell selection policy, whether the first cell supports two-step random access is considered, so that a cell supporting two-step random access can be preferentially used as the first cell, thereby improving random access efficiency.

In the embodiment of the present invention, when the terminal selects the first cell from the cell list, whether the cell supports two-step random access may be considered, and information about whether the cell supports two-step random access may be obtained in various ways. In one embodiment, the method may be issued by a network device through a system message, that is, before selecting a first cell from a cell list for random access according to a cell selection policy in step 101, the method further includes:

and receiving a system message, wherein the system message carries the random access type support information of the cell.

Specifically, the system message is sent by the network side device, and the network side device sends the system message to determine whether the broadcast cell supports two-step random access. The system message carries random access type support information of the cell, and the random access type support information may include information whether two-step random access is supported.

The terminal can know which cells support two-step random access according to the system message. When the terminal performs cell reselection or conditional switch, the terminal can preferentially select the cell supporting the two-step random access for random access so as to improve the random access efficiency.

Referring to fig. 2, fig. 2 is a flowchart of an information sending method provided in an embodiment of the present invention, where the information sending method is used for a network side device, and as shown in fig. 2, the information sending method includes the following steps:

step 201, broadcasting a system message, wherein the system message carries random access type support information of a cell.

Specifically, the network side device broadcasts a system message to inform the terminal whether the cell supports two-step random access. The system message carries random access type support information of the cell, and the random access type support information may include information whether two-step random access is supported.

The terminal can know which cells support two-step random access according to the system message. When the terminal performs cell reselection or conditional switch, the terminal can preferentially select the cell supporting the two-step random access for random access, thereby improving the random access efficiency.

In this embodiment, a network side device broadcasts a system message, where the system message carries random access type support information of a cell. Therefore, the terminal can know whether the cell supports two-step random access or not according to the system message, and the terminal can preferentially select the cell supporting the two-step random access for random access when performing cell reselection or conditional switch, so that the random access efficiency is improved.

Referring to fig. 3, fig. 3 is a flowchart of a resource allocation method provided in an embodiment of the present invention, for a first network device, as shown in fig. 3, the resource allocation method includes the following steps:

step 301, determining a random access type when the terminal is switched to the first network side device according to a random access type determination policy, where the random access type determination policy is at least related to whether the terminal supports two-step random access.

Specifically, the random access type may include two-step random access or four-step random access. And determining the strategy according to the random access type, and determining whether the random access type when the terminal is switched to the first network side equipment is two-step random access.

The random access type determination policy is related to at least whether the terminal supports two-step random access, which means that at least whether the terminal supports two-step random access needs to be considered in determining the random access type determination policy.

Step 302, configuring random access resources for the terminal according to the determined random access type.

And if the random access type is two-step random access, the first network side equipment configures two-step random access resources for the terminal.

In this embodiment, a random access type when a terminal is switched to the first network side device is determined according to a random access type determination policy, where the random access type determination policy is at least related to whether the terminal supports two-step random access; and configuring random access resources for the terminal according to the determined random access type. In this way, when the first network side device configures the random access resource for the terminal, whether the terminal supports two-step random access is considered, so that the two-step random access resource can be preferentially configured for the terminal under the condition that the terminal supports two-step random access, so as to improve the random access efficiency.

Further, the random access type determining policy specifically includes:

and under the condition that the terminal and the first network side equipment both support two-step random access, the random access type is two-step random access.

And under the condition that the terminal and the first network side equipment both support two-step random access, the random access type is determined to be two-step random access, and the first network side equipment configures random access resources for the terminal according to the two-step random access, so that the terminal can access according to the two-step random access, and the random access efficiency can be improved.

Further, configuring a random access resource for the terminal according to the determined random access type specifically includes:

and under the condition that the determined random access type is two-step random access, configuring a lead code, random access time and corresponding physical uplink shared channel resources for the terminal.

And under the condition that the random access type is determined to be two-step random access, the first network side equipment configures non-contention-based two-step random access resources or contention-based two-step random access resources for the terminal.

Under the condition that the first network side device configures non-contention based two-step random Access resources for the terminal, the first network side device configures a Preamble (i.e., Preamble), a random Access time (i.e., PRACH interference, wherein a Physical Random Access Channel (PRACH) is used for short) and a corresponding Physical Uplink Shared Channel (PUSCH) resource for the terminal.

And the terminal sends the preamble to the first network side device and sends a Buffer Status Report (BSR) in the configured PUSCH. The BSR is configured to notify a buffer condition of the first network side device terminal, and assist the first network side device in allocating uplink transmission resources to the terminal in the MSG B.

After receiving the MSG A containing the BSR, the first network side equipment sends uplink authorization to the terminal through the MSG B, and allocates uplink transmission resources for the terminal.

The first network-side device may send a random access Resource configured for the terminal to the base station, or the first network-side device (which may be understood as a target base station) may generate a Radio Resource Control (RRC) reconfiguration message, and send the Radio Resource Control reconfiguration message to the second network-side device (which may be understood as a source base station) through a handover Control message, where the source base station then sends the RRC reconfiguration message to the terminal.

Under the condition that the first network side equipment configures two-step random access resources based on competition for the terminal, the first network side equipment configures at least one group of resource configuration for the terminal to compete for the two-step random access, and each group of resource configuration comprises: a preamble, a random access time and a corresponding PUSCH resource.

And the terminal selects a group of resource configurations, sends the preamble to the first network side equipment, and sends a BSR and a UE identifier (namely an ID) in a corresponding PUSCH. The BSR is configured to notify a buffer condition of the first network side device terminal, and assist the first network side device in allocating uplink transmission resources to the terminal in the MSG B. And the UE ID is used for the first network side equipment to identify the terminal.

After receiving the MSG A containing the BSR, the first network side equipment sends uplink authorization to the UE through the MSG B, and allocates uplink transmission resources for the UE.

In the existing scheme, when a network side device is switched, a non-contention random access resource (a resource determined according to four-step random access) sent by the network side device to a User Equipment (UE for short) (the UE may also be understood as a terminal) only includes a preamble and a random access time, and there is no PUSCH resource. Thus, the UE can only report the preamble through the MSG 1 and cannot report the BSR, and the network side device allocates uplink resources to the UE through the MSG 2 for the UE to send the BSR in the next message. In the invention, under the condition that the determined random access type is two-step random access, the lead code, the random access time and the corresponding physical uplink shared channel resource are configured for the terminal, so that the BSR can be reported more quickly, and the random access efficiency is improved.

Further, before determining the random access type when the terminal is switched to the first network side device according to the random access type determination policy, at least one of the following steps is further included:

acquiring random access type support information of the terminal from second network side equipment;

and sending the random access type support information of the first network side equipment to the second network side equipment.

Specifically, the random access type support information of the terminal may include whether two-step random access is supported. In case of supporting two-step random access, the first random access type support information may further include that the terminal supports a contention-based two-step random access capability or that the terminal supports a non-contention-based two-step random access capability.

When the terminal supports two-step random access, the random access type support information of the terminal may also be understood as capability information of the terminal, the capability information including at least one of: the terminal supports two-step random access capability; the terminal supports two-step random access capability based on competition; the terminal supports a non-contention based two-step random access capability.

The multiple network side devices may exchange the received random access type support information of the terminal, and may also exchange the random access type support information of the network side devices themselves. The first network side device may be regarded as a target base station, the second network side device may be regarded as a source base station, and the first network side device may obtain the random access type support information of the terminal through the second network side device, or may send the random access type support information of the first network side device to the second network side device.

Referring to fig. 4, fig. 4 is a flowchart of an information sending method provided in an embodiment of the present invention, where the information sending method is used for a terminal, and as shown in fig. 4, the information sending method includes the following steps:

step 401, sending the random access type support information of the terminal.

And the terminal sends the random access type support information of the terminal to the network side equipment. The random access type support information may include information whether two-step random access is supported. In case of supporting the two-step random access, the random access type support information may further include that the terminal supports the contention-based two-step random access capability or that the terminal supports the non-contention-based two-step random access capability.

The terminal can send the random access type supporting information to the first network side equipment, and then the first network side equipment configures random access resources for the terminal according to the random access type supporting information.

The terminal can send the random access type supporting information to the first network side equipment, then the first network side equipment sends the random access type supporting information to the second network side equipment, and the second network side equipment configures the random access resources for the terminal according to the random access type supporting information.

In this embodiment, the terminal sends the random access type support information of the terminal, so that the network side device configures a random access resource for the terminal according to the random access type support information, and preferentially configures a two-step random access resource for the terminal when the terminal supports two-step random access, thereby improving access efficiency.

Referring to fig. 5, fig. 5 is a flowchart of a resource allocation method provided in an embodiment of the present invention, where the resource allocation method is used for a second network-side device, and as shown in fig. 5, the resource allocation method includes the following steps:

step 501, receiving first random access type support information sent by a terminal.

The first random access type support information may include information whether two-step random access is supported. In case of supporting two-step random access, the first random access type support information may further include that the terminal supports a contention-based two-step random access capability or that the terminal supports a non-contention-based two-step random access capability.

Step 502, sending the first random access type support information to an adjacent first network side device.

In this step, the first network side device sends the first random access type support information to the adjacent first network side device.

First random access type support information of the UE is sent between base stations (namely network side equipment). The source base station (namely, the second network side device) sends the first random access type supporting information of the UE to the target base station (namely, the first network side device) through the switching preparation message, and the target base station judges whether two-step random access resources are allocated or not according to the first random access type supporting information of the UE and the time delay requirement of the current service. And the source base station sends random access resource configuration information to the UE, wherein the information is generated by the target base station and is forwarded to the terminal through the source base station. For example: if the UE supports two-step random access based on competition, the target base station configures two-step random access resources based on competition for the UE; and if the UE supports the two-step random access based on the non-competition, the target base station configures the two-step random access resource based on the non-competition for the UE.

Step 503, receiving configuration information of the random access resource sent by the adjacent first network side device; the configuration information of the random access resource is at least related to the first random access type support information.

The configuration information of the random access resource is determined by the first network side equipment at least according to the first random access type support information. After determining the configuration information of the random access resource, the first network side device sends the configuration information of the random access resource to the second network side device.

Step 504, sending the configuration information of the random access resource to the terminal.

And the first network side equipment sends the configuration information of the random access resource sent by the second network side equipment to the terminal. The configuration information of the random access Resource may be generated by the target base station as a Radio Resource Control (RRC) reconfiguration message, and the Radio Resource Control (RRC) reconfiguration message is sent to the second network side device (which may be understood as a source base station) through the handover Control message, and the source base station then sends the RRC reconfiguration message to the terminal.

In this embodiment, first random access type support information sent by a terminal is received; sending the first random access type supporting information to adjacent first network side equipment; receiving configuration information of random access resources sent by the adjacent first network side equipment; the configuration information of the random access resource is at least related to the first random access type supporting information; and sending the configuration information of the random access resource to the terminal. Therefore, the network side equipment can configure the random access resources for the terminal according to the random access type support information of the terminal, so that the two-step random access resources are preferentially configured for the terminal under the condition that the terminal supports two-step random access, and the access efficiency is improved.

Further, the resource allocation method further includes:

acquiring second random access type support information of adjacent first network side equipment;

the sending of the first random access type support information to the adjacent first network side device specifically includes:

and sending the first random access type support information to adjacent first network side equipment under the condition that the first random access type support information indicates that two-step random access is supported, wherein the second random access type support information indicates that the two-step random access is supported.

Specifically, the base stations may interact with each other to determine whether to support two-step random access, for example, whether to support two-step random access when an Xn interface between the base stations is established. When the neighboring base station supports two-step random access or has configured two-step random access resources, the source base station may send, to the target base station (the neighboring base station includes the target base station), the capability of the UE to support two-step random access at the time of handover, so that the target base station allocates two-step random access resources for the terminal.

The first network side device may send its own second random access type support information to the second network side device, so that, when the terminal supports two-step random access and the second network side device determines the target base station for the terminal, the network side device supporting two-step random access may preferentially serve as the target base station, so that the terminal may access the target base station according to the two-step random access, thereby improving random access efficiency.

In summary, it can be seen from the above description that, in the embodiment of the present invention, the capability of the terminal supporting two-step random access can be ensured to be fully utilized in various ways, as follows:

in the first mode, a source network side device (namely, a second network side device) collects terminal capacity information, and when the terminal supports two-step random access, a target network side device supporting the two-step random access is preferentially selected as a switching candidate;

and in the second mode, the source network side equipment collects the terminal capability information and forwards the terminal capability information to all the target network side equipment, the target network side equipment configures random access resources according to the self capability and the terminal capability, and the network side equipment configures the two-step random access resources for the terminal under the condition that the terminal and the network side equipment both support two-step random access.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a terminal according to an embodiment of the present invention, and as shown in fig. 6, a first terminal 600 is configured to support two-step random access, where the first terminal 600 includes:

a selecting module 601, configured to select a first cell from the cell list for random access according to a cell selection policy, where the cell selection policy is at least related to whether the cell supports two-step random access.

Further, the first terminal 600 further includes:

and the receiving module is used for receiving the system information, and the system information carries the random access type supporting information of the cell.

Further, the cell selection policy specifically includes:

if the cell list includes cells supporting two-step random access, the cells supporting two-step random access have higher priority than the cells not supporting two-step random access.

Further, the cell selection policy specifically includes:

and if the cells supporting the two-step random access exist in the cell list, selecting the first cell from the cells supporting the two-step random access.

Further, the first cell is a target cell for cell reselection, or the first cell is a target cell for conditional handover.

The first terminal 600 can implement each process implemented by the terminal in the method embodiment shown in fig. 1, and is not described herein again to avoid repetition.

The first terminal 600 of the embodiment of the present invention selects the first cell from the cell list for random access according to the cell selection policy, where the cell selection policy is at least related to whether the cell supports two-step random access, and thus, when determining the first cell according to the cell selection policy, it considers whether the first cell supports two-step random access, and thus, the cell supporting two-step random access can be preferentially used as the first cell, so as to improve the random access efficiency.

Fig. 7 is a second schematic structural diagram of a terminal implementing various embodiments of the present invention, and as shown in fig. 7, a second terminal 700 includes:

The second terminal 700 can implement each process implemented by the terminal in the method embodiment shown in fig. 4, and is not described here again to avoid repetition.

In the second terminal 700 of the embodiment of the present invention, the terminal sends the random access type support information of the terminal, so that the network side device configures the random access resource for the terminal according to the random access type support information, so that when the terminal supports two-step random access, the two-step random access resource is preferentially configured for the terminal, thereby improving the access efficiency.

Fig. 8 is a schematic structural diagram of a terminal implementing various embodiments of the present invention, where the terminal 800 includes, but is not limited to: a transceiver unit (i.e., transceiver) 801, a network module 802, an audio output unit 803, an input unit 804, a sensor 805, a display unit 806, a user input unit 807, an interface unit 808, a memory 809, a processor 810, and a power supply 88. Those skilled in the art will appreciate that the terminal configuration shown in fig. 8 is not intended to be limiting, and that the terminal may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

Wherein, in an embodiment of the present invention, the processor 810 is configured to select a first cell from the cell list for random access according to a cell selection policy, where the cell selection policy is at least related to whether the cell supports two-step random access.

Further, the transceiver 801 is configured to receive a system message, where the system message carries random access type support information of a cell.

Further, the cell selection policy specifically includes:

The terminal 800 can implement each process implemented by the terminal in the method embodiment shown in fig. 1, and is not described herein again to avoid repetition.

The terminal 800 according to the embodiment of the present invention selects the first cell from the cell list for random access according to the cell selection policy, where the cell selection policy is at least related to whether the cell supports two-step random access, and thus, when determining the first cell according to the cell selection policy, it considers whether the first cell supports two-step random access, and thus, the cell supporting two-step random access can be preferentially used as the first cell, so as to improve the random access efficiency.

With respect to the terminal structure shown in fig. 8, the present invention further provides another embodiment, wherein the transceiver unit 801 is configured to transmit random access type support information of the terminal.

In the terminal 800 of the embodiment of the present invention, the terminal sends the random access type support information of the terminal, so that the network side device configures the random access resource for the terminal according to the random access type support information, so that when the terminal supports two-step random access, the two-step random access resource is preferentially configured for the terminal, thereby improving the access efficiency.

It should be understood that, in the embodiment of the present invention, the transceiver unit 801 may be used for receiving and transmitting signals during a process of transmitting and receiving information or a call, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 810; in addition, the uplink data is transmitted to the base station. Generally, the transceiver unit 801 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. The transceiving unit 801 may also communicate with networks and other devices via a wireless communication system.

The terminal provides wireless broadband internet access to the user through the network module 802, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.

The audio output unit 803 may convert audio data received by the transceiving unit 801 or the network module 802 or stored in the memory 809 into an audio signal and output as sound. Also, the audio output unit 803 may also provide audio output related to a specific function performed by the terminal 800 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 803 includes a speaker, a buzzer, a receiver, and the like.

The input unit 804 is used for receiving an audio or video signal. The input Unit 804 may include a Graphics Processing Unit (GPU) 8041 and a microphone 8042, and the Graphics processor 8041 processes image data of a still picture or video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 806. The image frames processed by the graphic processor 8041 may be stored in the memory 809 (or other storage medium) or transmitted via the transceiving unit 801 or the network module 802. The microphone 8042 can receive sound, and can process such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the transceiving unit 801 in case of the phone call mode.

The terminal 800 also includes at least one sensor 805, such as light sensors, motion sensors, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 8061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 8061 and/or the backlight when the terminal 800 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 805 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.

The display unit 806 is used to display information input by the user or information provided to the user. The Display unit 806 may include a Display panel 8061, and the Display panel 8061 may be configured by a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 807 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal. Specifically, the user input unit 807 includes a touch panel 8071 and other input devices 8072. The touch panel 8071, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 8071 (e.g., operations by a user on or near the touch panel 8071 using a finger, a stylus, or any other suitable object or accessory). The touch panel 8071 may include two portions of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 810, receives a command from the processor 810, and executes the command. In addition, the touch panel 8071 can be implemented by various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 8071, the user input unit 807 can include other input devices 8072. In particular, other input devices 8072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

Further, the touch panel 8071 can be overlaid on the display panel 8061, and when the touch panel 8071 detects a touch operation on or near the touch panel 8071, the touch operation is transmitted to the processor 810 to determine the type of the touch event, and then the processor 810 provides a corresponding visual output on the display panel 8061 according to the type of the touch event. Although in fig. 8, the touch panel 8071 and the display panel 8061 are two independent components to implement the input and output functions of the terminal, in some embodiments, the touch panel 8071 and the display panel 8061 may be integrated to implement the input and output functions of the terminal, which is not limited herein.

The interface unit 808 is an interface for connecting an external device to the terminal 800. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 808 may be used to receive input (e.g., data information, power, etc.) from external devices and transmit the received input to one or more elements within the terminal 800 or may be used to transmit data between the terminal 800 and external devices.

The memory 809 may be used to store software programs as well as various data. The memory 809 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 809 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 810 is a control center of the terminal, connects various parts of the entire terminal using various interfaces and lines, and performs various functions of the terminal and processes data by operating or executing software programs and/or modules stored in the memory 809 and calling data stored in the memory 809, thereby integrally monitoring the terminal. Processor 810 may include one or more processing units; preferably, the processor 810 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 810.

Terminal 800 can also include a power supply 811 (e.g., a battery) for powering the various components, and preferably power supply 88 can be logically coupled to processor 810 via a power management system to manage charging, discharging, and power consumption management functions via the power management system.

In addition, the terminal 800 includes some functional modules that are not shown, and are not described in detail herein.

Preferably, an embodiment of the present invention further provides a terminal, including a processor 810, a memory 809, and a computer program stored in the memory 809 and capable of running on the processor 810, where the computer program is executed by the processor 810 to implement each process in the random access method embodiment shown in fig. 1, or the computer program is executed by the processor 810 to implement each process in the information sending method embodiment shown in fig. 4, and the same technical effect can be achieved, and in order to avoid repetition, details are not repeated here.

Referring to fig. 9, fig. 9 is a schematic structural diagram of a network-side device according to an embodiment of the present invention, and as shown in fig. 9, the network-side device 900 includes:

a broadcasting module 901, configured to broadcast a system message, where the system message carries random access type support information of a cell.

The network side device 900 can implement each process implemented by the network side device in the method embodiment shown in fig. 2, and is not described here again to avoid repetition.

The network side device 900 of the embodiment of the present invention broadcasts a system message, wherein the system message carries the random access type support information of the cell. Therefore, the terminal can know whether the cell supports two-step random access or not according to the system message, and the terminal can preferentially select the cell supporting the two-step random access for random access when performing cell reselection or conditional switch, so that the random access efficiency is improved.

Referring to fig. 10, fig. 10 is a schematic structural diagram of a network-side device according to an embodiment of the present invention, and as shown in fig. 10, a first network-side device 1000 includes:

a determining module 1001, configured to determine a random access type when a terminal is switched to the first network-side device according to a random access type determination policy, where the random access type determination policy is at least related to whether the terminal supports two-step random access;

a configuring module 1002, configured to configure a random access resource for the terminal according to the determined random access type.

Further, the random access type determining policy specifically includes:

Further, the first network-side device 1000 further includes: a receiving module, configured to obtain random access type support information of the terminal from a second network-side device;

and/or, a sending module, configured to send the random access type support information of the first network side device to the second network side device.

The first network side device 1000 can implement each process implemented by the first network side device in the method embodiment shown in fig. 3, and is not described here again to avoid repetition.

The first network side device 1000 of the embodiment of the present invention determines a random access type when a terminal is switched to the first network side device according to a random access type determination policy, where the random access type determination policy is at least related to whether the terminal supports two-step random access; and configuring random access resources for the terminal according to the determined random access type. In this way, when the first network side device configures the random access resource for the terminal, whether the terminal supports two-step random access is considered, so that the two-step random access resource can be preferentially configured for the terminal under the condition that the terminal supports two-step random access, so as to improve the random access efficiency.

Referring to fig. 11, fig. 11 is a schematic structural diagram of a network-side device according to an embodiment of the present invention, and as shown in fig. 11, a second network-side device 1100 includes:

a first receiving module 1101, configured to receive first random access type support information sent by a terminal;

a first sending module 1102, configured to send the first random access type support information to an adjacent first network side device;

a second receiving module 1103, configured to receive configuration information of the random access resource sent by the adjacent first network-side device; the configuration information of the random access resource is at least related to the first random access type supporting information;

a second sending module 1104, configured to send the configuration information of the random access resource to the terminal.

Further, the second network-side device 1100 further includes:

acquiring second random access type support information of adjacent first network side equipment; the second random access type supporting information indicates network side equipment supporting two-step random access;

the first sending module 1102 is specifically configured to:

and under the condition that the first random access type supporting information indicates that two-step random access is supported, sending the first random access type supporting information to adjacent first network side equipment.

The second network side device 1100 can implement each process implemented by the second network side device in the method embodiment shown in fig. 5, and is not described here again to avoid repetition.

The second network side device 1100 of the embodiment of the present invention receives the first random access type support information sent by the terminal; sending the first random access type supporting information to adjacent first network side equipment; receiving configuration information of random access resources sent by the adjacent first network side equipment; the configuration information of the random access resource is at least related to the first random access type supporting information; and sending the configuration information of the random access resource to the terminal. Therefore, the network side equipment can configure the random access resources for the terminal according to the random access type support information of the terminal, so that the two-step random access resources are preferentially configured for the terminal under the condition that the terminal supports two-step random access, and the access efficiency is improved.

Referring to fig. 12, an embodiment of the present invention further provides a network side device, which includes a bus 1201, a transceiver 1202, an antenna 1203, a bus interface 1204, a processor 1205, and a memory 1206.

In an embodiment of the present invention, the transceiver 1202 is configured to broadcast a system message, where the system message carries random access type support information of a cell. The network side device in this embodiment may implement each process implemented by the network side device in the embodiment shown in fig. 2, which is not described herein again.

In another embodiment of the present invention, the processor 1205 is configured to determine a random access type when the terminal is handed over to the first network side device according to a random access type determination policy, where the random access type determination policy is at least related to whether the terminal supports two-step random access;

the processor 1205 is further configured to configure a random access resource for the terminal according to the determined random access type.

Further, the random access type determining policy specifically includes:

Further, the processor 1205 is further configured to configure a preamble, a random access time, and a corresponding physical uplink shared channel resource for the terminal when the determined random access type is two-step random access.

Further, the transceiver 1202 is configured to obtain random access type support information of the terminal from a second network side device;

and/or the presence of a gas in the gas,

and the random access type supporting information is used for sending the random access type supporting information of the first network side equipment to the second network side equipment.

The network side device in this embodiment may implement each process implemented by the first network side device in the embodiment shown in fig. 3, which is not described herein again.

In another embodiment of the present invention, the transceiver 1202 is configured to receive first random access type support information sent by a terminal;

the transceiver 1202 is further configured to send the first random access type support information to a first network-side device adjacent to the first network-side device;

the transceiver 1202 is further configured to receive configuration information of a random access resource sent by the adjacent first network-side device; the configuration information of the random access resource is at least related to the first random access type supporting information;

the transceiver 1202 is further configured to send configuration information of the random access resource to the terminal.

Further, the transceiver 1202 is further configured to obtain second random access type support information of the adjacent first network-side device;

the transceiver 1202 is further configured to send the first random access type support information to an adjacent first network side device if the first random access type support information indicates that two-step random access is supported, and send the second random access type support information to a network side device that supports two-step random access.

The network side device in this embodiment may implement each process implemented by the first network side device in the embodiment shown in fig. 5, which is not described herein again.

In fig. 12, a bus architecture (represented by the bus 1201), the bus 1201 can include any number of interconnected buses and bridges, and the bus 1201 links together various circuits including one or more processors, represented by the processor 1205, and memory, represented by the memory 1206. The bus 1201 may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. A bus interface 1204 provides an interface between the bus 1201 and the transceiver 1202. The transceiver 1202 may be one element or multiple elements, such as multiple receivers and transmitters, providing a means for communicating with various other apparatus over a transmission medium. Data processed by the processor 1205 is transmitted over a wireless medium via the antenna 1203, and further, the antenna 1203 receives the data and transmits the data to the processor 1205.

The processor 1205 is responsible for managing the bus 1201 and normal processing, and may provide a variety of functions including timing, peripheral interfaces, voltage regulation, power management, and other control functions. And memory 1206 may be used for storing data used by processor 1205 in performing operations.

Alternatively, the processor 1205 may be a CPU, ASIC, FPGA, or CPLD.

Preferably, an embodiment of the present invention further provides a network-side device, including a processor 1205, a memory 1206, and a computer program stored in the memory 1206 and capable of running on the processor 1205, where the computer program is executed by the processor 1205 to implement each process in the information sending method shown in fig. 2, or the computer program is executed by the processor 1205 to implement each process in the information sending method shown in fig. 3, or the computer program is executed by the processor 1205 to implement each process in the information sending method shown in fig. 5, and the same technical effect can be achieved, and in order to avoid repetition, details are not repeated here.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, where the computer program, when executed by a processor, implements the steps in the random access method shown in fig. 1, or the computer program, when executed by the processor, implements the steps in the information sending method shown in fig. 2, or the computer program, when executed by the processor, implements the steps in the resource configuration method shown in fig. 3, or the computer program, when executed by the processor, implements the steps in the information sending method shown in fig. 4, or the computer program, when executed by the processor, implements the steps in the resource configuration method shown in fig. 5.

The computer readable storage medium is, for example, ROM, RAM, magnetic disk or optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A random access method for a terminal supporting two-step random access, the random access method comprising:

2. The random access method of claim 1, wherein before selecting the first cell from the cell list for random access according to the cell selection policy, the method further comprises:

3. The random access method according to claim 1 or 2, wherein the cell selection policy specifically is:

4. The random access method according to claim 1 or 2, wherein the cell selection policy specifically is:

5. The random access method according to claim 1 or 2, wherein the first cell is a target cell for cell reselection or a target cell for conditional handover.

6. An information sending method, used for a network side device, is characterized in that the information sending method includes:

7. A resource configuration method is used for a first network side device, and is characterized in that the resource configuration method comprises the following steps:

8. The resource allocation method according to claim 7, wherein the random access type determination policy specifically is:

9. The resource allocation method according to claim 8, wherein the allocating random access resources for the terminal according to the determined random access type specifically comprises:

10. The resource configuration method according to any one of claims 7 to 9, wherein before determining the random access type when the terminal is handed over to the first network-side device according to the random access type determination policy, at least one of the following steps is further included:

11. An information sending method used for a terminal, the information sending method comprising:

and sending the random access type support information of the terminal.

12. A resource configuration method is used for a second network side device, and is characterized in that the resource configuration method comprises the following steps:

receiving first random access type support information sent by a terminal;

sending the first random access type supporting information to adjacent first network side equipment;

receiving configuration information of random access resources sent by the adjacent first network side equipment; the configuration information of the random access resource is at least related to the first random access type supporting information;

and sending the configuration information of the random access resource to the terminal.

13. The resource allocation method according to claim 12, further comprising:

14. A terminal configured to support two-step random access, comprising:

15. A terminal for supporting two-step random access, comprising a processor and a transceiver:

16. A network-side device, comprising:

17. A network side device, comprising a processor and a transceiver,

18. A network side device, which is a first network side device, includes:

19. A network-side device, the network-side device being a first network-side device, comprising a processor and a transceiver:

20. A terminal, comprising:

21. A terminal, comprising a processor and a transceiver:

22. A network side device, which is a second network side device, includes:

23. A network side device, the network side device being a second network side device, comprising a processor and a transceiver:

24. The network-side device of claim 23, wherein the transceiver is further configured to acquire second random access type support information of a neighboring first network-side device;

the transceiver is further configured to send the first random access type support information to an adjacent first network side device when the first random access type support information indicates that two-step random access is supported, and the second random access type support information indicates that the two-step random access is supported.

25. A terminal comprising a processor, a memory and a computer program stored on the memory and being executable on the processor, the computer program, when executed by the processor, implementing the steps in the random access method according to any one of claims 1 to 5 or the computer program, when executed by the processor, implementing the steps in the information transmission method according to claim 11.

26. A network-side device, comprising a processor, a memory, and a computer program stored on the memory and operable on the processor, wherein the computer program, when executed by the processor, implements the steps in the information transmission method according to claim 6, or wherein the computer program, when executed by the processor, implements the steps in the resource configuration method according to any one of claims 7-10, or wherein the computer program, when executed by the processor, implements the steps in the resource configuration method according to claim 12 or 13.

27. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program, the computer program when executed by a processor implementing the steps in the random access method according to any of claims 1 to 5, or the computer program, when being executed by the processor, implements the steps in the information transmitting method according to claim 6, or the computer program, when executed by the processor, implements the steps in the resource configuration method of any of claims 7-10, or the computer program, when being executed by the processor, implements the steps in the information transmitting method according to claim 11, alternatively, the computer program realizes the steps in the resource configuration method according to any one of claims 12 or 13 when executed by the processor.