CN110381603A - A kind of accidental access method and terminal - Google Patents

Abstract

The present invention provides a random access method and a terminal. The method includes: obtaining the beam quality of an available beam for transmitting a target signal; wherein, the target signal includes: a channel state indication reference signal CSI‑RS and a synchronization signal block SSB; according to available The beam quality of the beam determines the access sequence of the available beams; according to the access sequence, the random access resources corresponding to the available beams are sequentially used to access the target cell. When the terminal of the present invention detects the available beams for transmitting CSI-RS and SSB, it determines the access sequence of the SSB-based dedicated random access resources and the CSI-RS-based dedicated random access resources according to the beam quality of the available beams , so that the terminal reasonably uses the two dedicated random access resources to access the target cell.

Description

A random access method and terminal

technical field

The present invention relates to the field of communication technologies, in particular to a random access method and a terminal.

Background technique

In the fifth generation (5Generation, 5G) mobile communication system, the handover process is based on the long-term evolution (Long Time Evolution, LTE) system handover process, mainly including: measurement configuration, measurement report, handover request, handover confirmation, and terminal initiation in the target cell random access process. However, due to the introduction of multi-beam operation in the 5G system, beam-related information is added in the handover process. Based on the information related to these beams, the handover command can carry the dedicated random access resources reserved by the target cell for the terminal, as well as the Synchronization Signal Block (Synchronization Signal Block, SSB) and the Channel State Information Reference Signal (Channel State Information Reference Signal, CSI-RS) relationship.

Due to the rapid change of the wireless channel, although the terminal detects the available beam when measuring the adjacent cell, when the terminal communicates in the target cell, the measured available beam may become unavailable, so the handover command will also carry a The quality threshold of the beams available in the target cell. Only beams exceeding the threshold are considered available, and the terminal can use its corresponding dedicated random access resources. Wherein, the network device may configure corresponding threshold values for the SSB and the CSI-RS.

When the terminal initiates random access in the target cell, it preferentially uses dedicated random access resources, and uses public random access resources when no dedicated random access resources are available. Since the network device may reserve SSB-based dedicated random access resources and CSI-RS-based dedicated random access resources for the terminal at the same time, the terminal cannot determine how to use these two dedicated random access resources, which may cause the terminal The random access of the cell fails.

Contents of the invention

The present invention provides a random access method and terminal, which solves the problem that the random access of the terminal in the target cell fails because the terminal cannot determine how to use two dedicated random access resources based on SSB and CSI-RS.

An embodiment of the present invention provides a random access method applied to a terminal, including:

Obtain the beam quality of the available beam for transmitting the target signal; wherein the target signal includes: channel state indication reference signal CSI-RS and synchronization signal block SSB;

Determine the access sequence of the available beams according to the beam quality of the available beams;

According to the access sequence, access to the target cell is performed sequentially through the random access resources corresponding to the available beams.

Wherein, according to the beam quality of the available beams, the step of determining the access sequence of the available beams includes:

According to the beam quality of the available beams for transmitting the CSI-RS and the SSB, the access order of the available beams from high to low is determined.

Wherein, according to the beam quality of the available beams, the step of determining the access sequence of the available beams includes:

determining the first access sequence of the first beam according to the beam quality of the first beam transmitting the CSI-RS among the available beams;

and / or,

The second access order of the second beam is determined according to the beam quality of the second beam transmitting the SSB among the available beams.

Wherein, after the step of determining the first access sequence of the first beam according to the beam quality of the first beam transmitting the CSI-RS among the available beams, it also includes:

In the second beam, acquire the first target beam whose beam quality after shifting according to the preset offset value exceeds the available threshold value of the beam corresponding to the transmission CSI-RS;

The first access sequence is updated according to the shifted beam quality of the first target beam.

Wherein, according to the access sequence, the step of performing access to the target cell through the random access resources corresponding to the available beams sequentially includes:

When the data transmission rate requirement is higher than the coverage requirement, perform access to the target cell through the first random access resource corresponding to the first beam according to the first access sequence;

If the access to the target cell fails, continue to perform access to the target cell through the second random access resource corresponding to the second beam according to the second access sequence.

Wherein, after the step of determining the second access sequence of the second beam according to the beam quality of the second beam transmitting the SSB among the available beams, it further includes:

In the first beam, acquire a second target beam whose beam quality after shifting according to the preset offset value exceeds the available threshold value of the beam corresponding to the transmission SSB;

The second access sequence is updated according to the shifted beam quality of the second target beam.

Wherein, according to the access sequence, the step of performing access to the target cell through the random access resources corresponding to the available beams sequentially includes:

When the coverage requirement is higher than the data transmission rate requirement, perform access to the target cell through the second random access resource corresponding to the second beam according to the second access sequence;

If the access to the target cell fails, continue to perform access to the target cell through the first random access resource corresponding to the first beam according to the first access sequence.

Wherein, the preset offset value is obtained from a cell handover command sent by the target cell or from a broadcast system message.

Wherein, when the available beam for transmitting a reference signal corresponds to at least two random access resources, the step of performing access to the target cell through the random access resource corresponding to the available beam includes:

performing access to the target cell sequentially through at least two random access resources according to the beam quality of the downlink beams corresponding to the at least two random access resources;

or,

According to the time sequence in which at least two random access resources are detected, sequentially use at least two random access resources to access the target cell;

or,

According to a random order, access to the target cell is performed sequentially through at least two random access resources.

Wherein, before the step of accessing the target cell through the random access resources corresponding to the available beams sequentially according to the access sequence, it also includes:

Obtain random access resources corresponding to available beams.

Wherein, the step of acquiring random access resources corresponding to available beams includes:

Obtain random access resources corresponding to available beams from the cell handover command sent by the target cell.

A terminal, including: a processor; a memory connected to the processor, and a transceiver connected to the processor; wherein, the processor is used to call and execute programs and data stored in the memory, and implement the following steps:

Obtain the beam quality of the available beam for transmitting the target signal; wherein the target signal includes: channel state indication reference signal CSI-RS and synchronization signal block SSB;

Determine the access sequence of the available beams according to the beam quality of the available beams;

The transceiver is configured to access the target cell sequentially through the random access resources corresponding to the available beams according to the access sequence.

Among them, the processor is used for:

According to the beam quality of the available beams for transmitting the CSI-RS and the SSB, the access order of the available beams from high to low is determined.

Among them, the processor is used for:

determining the first access sequence of the first beam according to the beam quality of the first beam transmitting the CSI-RS among the available beams;

and / or,

The second access order of the second beam is determined according to the beam quality of the second beam transmitting the SSB among the available beams.

Among them, the processor is used for:

In the second beam, acquire the first target beam whose beam quality after shifting according to the preset offset value exceeds the available threshold value of the beam corresponding to the transmission CSI-RS;

The first access sequence is updated according to the shifted beam quality of the first target beam.

Among them, the transceiver is used for:

When the data transmission rate requirement is higher than the coverage requirement, perform access to the target cell through the first random access resource corresponding to the first beam according to the first access sequence;

If the access to the target cell fails, continue to perform access to the target cell through the second random access resource corresponding to the second beam according to the second access sequence.

Among them, the processor is used for:

In the first beam, acquire a second target beam whose beam quality after shifting according to the preset offset value exceeds the available threshold value of the beam corresponding to the transmission SSB;

The second access sequence is updated according to the shifted beam quality of the second target beam.

Among them, the transceiver is used for:

When the coverage requirement is higher than the data transmission rate requirement, perform access to the target cell through the second random access resource corresponding to the second beam according to the second access sequence;

If the access to the target cell fails, continue to perform access to the target cell through the first random access resource corresponding to the first beam according to the first access sequence.

Wherein, the preset offset value is obtained from a cell handover command sent by the target cell or from a broadcast system message.

Wherein, when an available beam for transmitting a reference signal corresponds to at least two random access resources, the transceiver is used for:

performing access to the target cell sequentially through at least two random access resources according to the beam quality of the downlink beams corresponding to the at least two random access resources;

or,

According to the time sequence in which at least two random access resources are detected, sequentially use at least two random access resources to access the target cell;

or,

According to a random order, access to the target cell is performed sequentially through at least two random access resources.

Wherein, the processor is configured to: obtain random access resources corresponding to available beams.

Wherein, the processor is configured to: acquire random access resources corresponding to available beams from a cell handover command sent by the target cell.

A computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the above-mentioned random access method are realized.

The beneficial effect of the above technical solution of the present invention is: when the terminal detects the available beams for transmitting CSI-RS and SSB, it determines the dedicated random access resources based on SSB and the dedicated random access resources based on CSI-RS according to the beam quality of the available beams. The access sequence of the random access resources enables the terminal to reasonably use the two dedicated random access resources to access the target cell, avoiding the problem of cell access failure caused by improper use of resources.

Description of drawings

FIG. 1 shows a schematic flowchart of a random access method according to an embodiment of the present invention;

FIG. 2 shows a schematic diagram of a module structure of a terminal according to an embodiment of the present invention;

Fig. 3 shows a structural block diagram of the terminal of the present invention.

Detailed ways

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments. In the following description, specific details, such as specific configurations and components, are provided only to assist in a comprehensive understanding of the embodiments of the present invention. Accordingly, those of ordinary skill in the art should recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

It should be understood that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present invention. Thus, appearances of "in one embodiment" or "in an embodiment" in various places throughout the specification are not necessarily referring to the same embodiment. Furthermore, the particular features, structures or characteristics may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the order of execution, and the order of execution of each process should be determined by its functions and internal logic, rather than implementing the present invention. The implementation of the examples constitutes no limitation.

Additionally, the terms "system" and "network" are often used interchangeably herein.

In the embodiments provided in this application, it should be understood that "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean determining B only according to A, and B may also be determined according to A and/or other information.

As shown in Figure 1, an embodiment of the present invention provides a random access method, which specifically includes the following steps:

Step 11: Obtain the beam quality of the available beam for transmitting the target signal.

Wherein, the target signal includes: a channel state indication reference signal CSI-RS and a synchronization signal block SSB. Wherein, the network device may configure corresponding beam availability thresholds for the SSB and CSI-RS, that is, the terminal will determine that the beam is available only when the quality of the beam exceeds the aforementioned beam availability threshold. Specifically, the terminal obtains the beam quality of the available beam for transmitting the SSB and the beam quality of the available beam for transmitting the CSI-RS.

Step 12: Determine the access sequence of the available beams according to the beam quality of the available beams.

In order to avoid the problem of beams changing from available to unavailable due to rapid changes in wireless channels, the terminal can sort these available beams according to the beam quality of the currently detected available beams, so as to determine the access sequence and ensure the priority of beam quality Good usable beam.

Step 13: According to the access sequence, the target cell is accessed sequentially through the random access resources corresponding to the available beams.

Since the access sequence is determined according to the beam quality of the available beams, it can be ensured that the terminal uses the random access resources corresponding to the available beams with good beam quality to access the target cell as much as possible.

In particular, when an available beam for transmitting a reference signal (SSB or CSI-RS) corresponds to at least two random access resources, that is, if the target cell reserves multiple random access resources associated with an available beam for the terminal In step 13, the step of how to access the target cell through the random access resource corresponding to the available beam includes but is not limited to the following forms:

Method 1. The terminal can use these random access resources according to the quality order of the downlink beams corresponding to each random access resource. random access resources to access the target cell.

Manner 2: According to the time sequence in which at least two random access resources are detected, the target cell is accessed sequentially through at least two random access resources. Specifically, the terminal takes the time sequence of detecting the downlink beams corresponding to each random access resource as the time sequence of detecting at least two random access resources, and uses the random random access resources corresponding to these downlink beams according to this time sequence .

Method 3. How the terminal uses the at least two random access resources is handed over to the terminal for implementation, for example: according to a random sequence, at least two random access resources are used to access the target cell in turn, that is, the terminal can randomly use the available beam corresponding to at least two random access resources for .

Further, before step 13, the following step may also be included: obtaining random access resources corresponding to available beams. Specifically, this step may be: acquiring random access resources corresponding to available beams from a cell handover command sent by the target cell.

In a preferred embodiment, step 12 includes but is not limited to the following methods:

Method 1: Determine the access order of the available beams from high to low according to the beam quality of the available beams for transmitting the CSI-RS and SSB.

In this method, the terminals are sorted according to the beam quality of the detected available beams, and the random access resources corresponding to the available beams with good quality are preferentially used. This method does not distinguish between CSI-RS and SSB, and only sorts according to the quality of the wave number .

Method 2: Determine the first access order of the first beam according to the beam quality of the first beam transmitting the CSI-RS among the available beams; and/or, according to the beam quality of the second beam transmitting the SSB among the available beams, A second access sequence for the second beam is determined.

In this method, for the first beam transmitting SSB among the available beams and the second beam transmitting CSI-RS among the available beams, the terminal sorts the beams according to the quality of the detected beams, that is, for the first beam transmitting SSB, the first beam is determined The input order is determined, and the second access order is determined for the second beam transmitting the CSI-RS. That is to say, this method is a method of sorting first and then sorting. Similar to the first method above, this method also preferentially uses random access resources corresponding to available beams with good quality.

Since terminals have different requirements on network performance in different service scenarios, the following describes the embodiments of the present invention in combination with specific application scenarios:

Application Scenario 1. When the data transmission rate requirement is higher than the coverage requirement, that is, the terminal is more sensitive to the data transmission rate scenario, the terminal uses the first random access resource corresponding to the first beam according to the first access sequence to perform the target cell If the access to the target cell fails, continue to perform access to the target cell through the second random access resource corresponding to the second beam according to the second access sequence.

Specifically, in actual network deployment, since CSI-RS-based beams mainly provide accurate data communication for terminals, terminals that are more sensitive to data rates preferentially use dedicated random access resources associated with CSI-RS; regardless of where the SSB is How much is the difference in quality between the beam of the CSI-RS and the beam where the CSI-RS is located.

Further, if the target cell reserves at least two random access resources associated with the CSI-RS for the terminal, the terminal may sequentially pass at least two random access resources according to the beam quality of the downlink beam corresponding to the at least two random access resources. or, the terminal may also use at least two random access resources to access the target cell sequentially according to the time sequence in which at least two random access resources are detected; or, how the terminal uses the The at least two random access resources are handed over to the terminal for implementation, for example: according to a random order, the at least two random access resources are sequentially used to access the target cell.

Preferably, if the terminal fails to use the random access resource corresponding to the CSI-RS, then use the random access resource associated with the SSB, and its usage method is similar to the above-mentioned method for the terminal to use the random access resource corresponding to the CSI-RS; However, the specific use order may be the same as or different from the above random access resource use order corresponding to the CSI-RS.

In another preferred embodiment, after determining the first access sequence of the first beam according to the beam quality of the first beam transmitting the CSI-RS among the available beams, the method may further include: in the second beam, Acquiring a first target beam whose beam quality offset by a preset offset value exceeds the beam availability threshold corresponding to transmitting CSI-RS; and updating the first access sequence according to the offset beam quality of the first target beam.

When the data transmission rate requirement is higher than the coverage requirement, that is, the terminal is more sensitive to the data transmission rate scenario, the terminal uses the first random access resource corresponding to the first beam according to the updated first access sequence to perform the target cell Access: if the access to the target cell fails, continue to follow the second access sequence after removing the first target beam, and perform access to the target cell through the second random access resource corresponding to the second beam.

In this embodiment, the terminal preferentially uses the random access resource corresponding to the CSI-RS, but when the terminal detects that the beam quality of the second beam transmitting the SSB exceeds the preset offset value ( delta) (the detla value can be obtained from the cell handover command sent by the target cell or from the broadcast system message), then the random access resource corresponding to the SSB can also be used preferentially without waiting until the terminal has tried all the CSI- The random access resource corresponding to the RS is used later. As for the method of using the random access resource corresponding to the CSI-RS and the preferentially used SSB, one of the above-mentioned ways in which the UE uses the random access resource can be adopted.

Wherein, according to the shifted beam quality of the first target beam, updating the first access sequence can be implemented as follows: according to the shifted beam quality of the first target beam and the beam quality of the first beam, access from high to low The first access sequence is updated.

In this way, for a terminal whose data transmission rate requirement is higher than the coverage requirement, the random access resource corresponding to the CSI-RS is preferentially used. When the quality of the random access resource corresponding to the SSB is much higher than that of the random access resource corresponding to the CSI-RS , the random access resource corresponding to the SSB can be preferentially used, which can not only ensure the data transmission rate, but also ensure the reliability of the data transmission.

Application Scenario 2. When the coverage requirement is higher than the data transmission rate requirement, that is, the terminal is more sensitive to coverage, the terminal can follow the second access sequence and use the second random access resource corresponding to the second beam to perform the target cell access; if the access to the target cell fails, continue to follow the first access sequence, and perform access to the target cell through the first random access resource corresponding to the first beam.

Specifically, for a terminal more sensitive to coverage, the dedicated random access resource corresponding to the SSB is preferentially used, and the dedicated random access resource corresponding to the CSI-RS is used after all available random access resources corresponding to the SSB fail.

In particular, if the target cell reserves at least two random access resources associated with the SSB for the terminal, the terminal can sequentially pass at least two random access resources according to the beam quality of the downlink beam corresponding to the at least two random access resources Perform access to the target cell; or, the terminal may also use at least two random access resources to perform access to the target cell in sequence according to the time sequence in which the at least two random access resources are detected; or, how the terminal uses the at least two random access resources The random access resources are handed over to the terminal for implementation, for example, at least two random access resources are sequentially used to access the target cell in a random sequence.

Preferably, the method for the terminal to use the random access resource associated with the CSI-RS is similar to the above method for the terminal to use the random access resource corresponding to the SSB; however, the specific use sequence may be the same as the above random access resource use sequence corresponding to the SSB or different.

In another preferred embodiment, after determining the second access sequence of the second beam according to the beam quality of the second beam transmitting the SSB among the available beams, the method further includes: in the first beam, obtaining Set the second target beam whose beam quality after the offset value offset exceeds the available beam threshold corresponding to the transmission SSB; and update the second access sequence according to the offset beam quality of the second target beam.

When the coverage requirement is higher than the data transmission rate requirement, that is, the terminal is more sensitive to the coverage scenario, the terminal can perform access to the target cell through the second random access resource corresponding to the second beam according to the updated second access sequence. If the access to the target cell fails, continue to perform access to the target cell through the first random access resource corresponding to the first beam according to the first access sequence after removing the second target beam.

In this embodiment, the terminal preferentially uses the dedicated random access resource corresponding to the SSB, but when the terminal detects that the beam quality of the first beam transmitting the CSI-RS exceeds the preset offset value ( delta) (the detla value is obtained from the cell handover command sent by the target cell or from the broadcast system message), the random access resources corresponding to the CSI-RS can also be used preferentially without waiting until the terminal has tried all SSBs The corresponding random access resources are used later. As for the method of using the random access resource corresponding to the SSB and the preferentially used CSI-RS, one of the above-mentioned ways in which the UE uses the random access resource can be adopted.

Wherein, according to the shifted beam quality of the second target beam, updating the second access sequence can be implemented as follows: according to the shifted beam quality of the second target beam and the beam quality of the second beam, access from high to low The input sequence is updated to update the second access sequence.

In this way, for a terminal whose coverage requirement is higher than the data transmission rate requirement, the random access resource corresponding to the SSB is preferentially used. When the quality of the random access resource corresponding to the CSI-RS is much higher than the random access resource corresponding to the SSB, it can Prioritizing the use of random access resources corresponding to the CSI-RS can not only ensure the coverage performance of the terminal, but also ensure the reliability of data transmission.

In the random access method of the embodiment of the present invention, when the terminal detects the available beam for transmitting CSI-RS and SSB, it determines the dedicated random access resource based on SSB and the dedicated random access resource based on CSI-RS according to the beam quality of the available beam. The access sequence of the random access resources enables the terminal to reasonably use the two dedicated random access resources to access the target cell, avoiding the problem of cell access failure caused by improper use of resources.

The above embodiments respectively introduce the random access method of the present invention, and the following embodiment will further describe its corresponding terminal in conjunction with the accompanying drawings.

Specifically, as shown in FIG. 2, the terminal in this embodiment of the present invention includes:

The first acquisition module 210 is configured to acquire the beam quality of an available beam for transmitting a target signal; wherein the target signal includes: a channel state indication reference signal CSI-RS and a synchronization signal block SSB;

A determination module 220, configured to determine an access sequence of available beams according to the beam quality of the available beams;

The access module 230 is configured to access the target cell sequentially through the random access resources corresponding to the available beams according to the access sequence.

Wherein, the determining module 220 includes:

The first determining submodule is configured to determine the access sequence of the available beams from high to low according to the beam quality of the available beams for transmitting CSI-RS and SSB.

Wherein, the determining module 220 also includes:

The second determination submodule is configured to determine the first access sequence of the first beam according to the beam quality of the first beam transmitting the CSI-RS among the available beams;

and / or,

The third determining submodule is configured to determine a second access sequence of the second beam according to the beam quality of the second beam transmitting the SSB among the available beams.

Wherein, the determining module 220 also includes:

The first acquiring submodule is configured to acquire, in the second beam, the first target beam whose beam quality offset according to the preset offset value exceeds the available threshold value of the beam corresponding to the transmission CSI-RS;

The first updating submodule is configured to update the first access sequence according to the shifted beam quality of the first target beam.

Wherein, the access module 230 includes:

The first access submodule is configured to perform access to the target cell through the first random access resource corresponding to the first beam according to the first access sequence when the data transmission rate requirement is higher than the coverage requirement;

The second access submodule is configured to continue to access the target cell through the second random access resource corresponding to the second beam according to the second access sequence if the access to the target cell fails.

Wherein, the determining module 220 also includes:

The second acquisition submodule is configured to acquire, in the first beam, a second target beam whose beam quality offset by a preset offset value exceeds the available beam threshold value corresponding to the transmission SSB;

The second updating submodule is configured to update the second access sequence according to the shifted beam quality of the second target beam.

Wherein, the access module 230 also includes:

The third access submodule is configured to perform access to the target cell through the second random access resource corresponding to the second beam according to the second access sequence when the coverage requirement is higher than the data transmission rate requirement;

The fourth access submodule is configured to continue to access the target cell through the first random access resource corresponding to the first beam according to the first access sequence if the access to the target cell fails.

Wherein, the preset offset value is obtained from a cell handover command sent by the target cell or from a broadcast system message.

Wherein, when the available beam for transmitting a reference signal corresponds to at least two random access resources, the access module 230 further includes:

The fifth access submodule is configured to sequentially access the target cell through at least two random access resources according to the beam quality of the downlink beams corresponding to the at least two random access resources;

or,

The sixth access submodule is configured to sequentially access the target cell through at least two random access resources according to the time sequence in which at least two random access resources are detected;

or,

The seventh access submodule is configured to perform access to the target cell sequentially through at least two random access resources in a random order.

Wherein, the terminal 200 also includes:

The second obtaining module is configured to obtain random access resources corresponding to available beams.

Wherein, the second acquisition module includes:

The third acquiring submodule is configured to acquire the random access resource corresponding to the available beam from the cell handover command sent by the target cell.

The terminal embodiment of the present invention corresponds to the above method embodiment, and all the implementation means in the above method embodiment are applicable to the terminal embodiment, and can also achieve the same technical effect. When the terminal detects an available beam for transmitting CSI-RS and SSB, it determines the access sequence of the SSB-based dedicated random access resource and the CSI-RS-based dedicated random access resource according to the beam quality of the available beam, so that The terminal reasonably uses these two kinds of dedicated random access resources to access the target cell, so as to avoid the problem of cell access failure caused by improper use of resources.

As shown in Figure 3, this embodiment provides a terminal, including:

A processor 31; and a memory 33 connected to the processor 31 through a bus interface 32, the memory 33 is used to store programs and data used by the processor 31 in performing operations, when the processor 31 calls and When the programs and data stored in the memory 33 are executed, the following processes are performed.

Wherein, the transceiver 34 is connected with the bus interface 32 for receiving and sending data under the control of the processor 31 .

The processor 31 is configured to obtain the beam quality of the available beam for transmitting the target signal; wherein the target signal includes: a channel state indication reference signal CSI-RS and a synchronization signal block SSB;

Determine the access sequence of the available beams according to the beam quality of the available beams;

The transceiver 34 is configured to access the target cell sequentially through the random access resources corresponding to the available beams according to the access sequence.

Wherein, processor 31 is used for:

According to the beam quality of the available beams for transmitting the CSI-RS and the SSB, the access order of the available beams from high to low is determined.

Wherein, processor 31 is used for:

determining the first access sequence of the first beam according to the beam quality of the first beam transmitting the CSI-RS among the available beams;

and / or,

The second access order of the second beam is determined according to the beam quality of the second beam transmitting the SSB among the available beams.

Wherein, processor 31 is used for:

In the second beam, acquire the first target beam whose beam quality after shifting according to the preset offset value exceeds the available threshold value of the beam corresponding to the transmission CSI-RS;

The first access sequence is updated according to the shifted beam quality of the first target beam.

Wherein, the transceiver 34 is used for:

When the data transmission rate requirement is higher than the coverage requirement, perform access to the target cell through the first random access resource corresponding to the first beam according to the first access sequence;

If the access to the target cell fails, continue to perform access to the target cell through the second random access resource corresponding to the second beam according to the second access sequence.

Wherein, processor 31 is used for:

In the first beam, acquire a second target beam whose beam quality after shifting according to the preset offset value exceeds the available threshold value of the beam corresponding to the transmission SSB;

The second access sequence is updated according to the shifted beam quality of the second target beam.

Wherein, the transceiver 34 is used for:

When the coverage requirement is higher than the data transmission rate requirement, perform access to the target cell through the second random access resource corresponding to the second beam according to the second access sequence;

If the access to the target cell fails, continue to perform access to the target cell through the first random access resource corresponding to the first beam according to the first access sequence.

Wherein, the preset offset value is obtained from a cell handover command sent by the target cell or from a broadcast system message.

Wherein, when the available beam for transmitting a reference signal corresponds to at least two random access resources, the transceiver 34 is used for:

performing access to the target cell sequentially through at least two random access resources according to the beam quality of the downlink beams corresponding to the at least two random access resources;

or,

According to the time sequence in which at least two random access resources are detected, sequentially use at least two random access resources to access the target cell;

or,

According to a random order, access to the target cell is performed sequentially through at least two random access resources.

Wherein, the processor 31 is configured to: obtain random access resources corresponding to available beams.

Wherein, the processor 31 is configured to: acquire the random access resource corresponding to the available beam from the cell handover command sent by the target cell.

It should be noted that, in FIG. 3 , the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 31 and various circuits of the memory represented by the memory 33 are linked together. The bus architecture can also link together various other circuits such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and therefore will not be further described herein. The bus interface provides the interface. Transceiver 34 may be a multi-element, ie, including transmitter and transceiver, providing means for communicating with various other devices over a transmission medium. For different terminals, the user interface 35 may also be an interface capable of connecting externally and internally to required devices, and the connected devices include but not limited to keypads, monitors, speakers, microphones, joysticks, and the like. The processor 31 is responsible for managing the bus architecture and general processing, and the memory 33 can store data used by the processor 31 when performing operations.

Those skilled in the art will understand that all or part of the steps in the above embodiments may be implemented by hardware, or may be completed by instructing the relevant hardware through a computer program, the computer program including instructions for executing part or all of the steps of the above methods ; and the computer program can be stored in a readable storage medium, and the storage medium can be any form of storage medium.

The embodiment of the present invention also provides a computer-readable storage medium. A computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, each process of the above-mentioned random access method embodiment is realized, and the same Technical effects, in order to avoid repetition, will not be repeated here. Wherein, the computer-readable storage medium is, for example, a read-only memory (Read-Only Memory, ROM for short), a random access memory (Random Access Memory, RAM for short), a magnetic disk or an optical disk, and the like.

In addition, it should be pointed out that in the device and method of the present invention, obviously, each component or each step can be decomposed and/or reassembled. These decompositions and/or recombinations should be considered equivalents of the present invention. Also, the steps for executing the above series of processes can naturally be executed in chronological order according to the illustrated order, but they are not necessarily executed in chronological order, and some steps can be executed in parallel or independently of each other. For those of ordinary skill in the art, it can be understood that all or any steps or components of the method and device of the present invention can be implemented in any computing device (including a processor, storage medium, etc.) or a network of computing devices in the form of hardware or firmware , software or a combination thereof, which can be realized by those of ordinary skill in the art using their basic programming skills after reading the description of the present invention.

Therefore, the object of the present invention can also be achieved by running a program or a group of programs on any computing device. The computing device may be a known general-purpose device. Therefore, the object of the present invention can also be achieved only by providing a program product including program codes for realizing the method or device. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. Obviously, the storage medium may be any known storage medium or any storage medium developed in the future. It should also be pointed out that in the device and method of the present invention, obviously, each component or each step can be decomposed and/or reassembled. These decompositions and/or recombinations should be considered equivalents of the present invention. Also, the steps for performing the above series of processes may naturally be performed in chronological order in the order described, but need not necessarily be performed in chronological order. Certain steps may be performed in parallel or independently of each other.

The above description is a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (23)

1. A random access method applied to a terminal, characterized in that it comprises: Obtaining the beam quality of an available beam for transmitting a target signal; wherein the target signal includes: a channel state indication reference signal CSI-RS and a synchronization signal block SSB; determining an access sequence of the available beams according to the beam quality of the available beams; According to the access sequence, access to the target cell is performed sequentially through random access resources corresponding to the available beams. 2. The random access method according to claim 1, wherein the step of determining the access order of the available beams according to the beam quality of the available beams comprises: According to the beam quality of the available beams for transmitting the CSI-RS and SSB, determine the access order of the available beams from high to low. 3. The random access method according to claim 1, wherein the step of determining the access order of the available beams according to the beam quality of the available beams comprises: determining a first access sequence of the first beam according to the beam quality of the first beam transmitting the CSI-RS among the available beams; and / or, determining a second access sequence of the second beam according to the beam quality of the second beam transmitting the SSB among the available beams. 4. The random access method according to claim 3, wherein the first access sequence of the first beam is determined according to the beam quality of the first beam transmitting the CSI-RS among the available beams After the steps, also include: In the second beam, acquire a first target beam whose beam quality after shifting according to a preset offset value exceeds an available threshold value of a beam corresponding to transmitting the CSI-RS; Updating the first access sequence according to the shifted beam quality of the first target beam. 5. The random access method according to claim 3 or 4, characterized in that, according to the access sequence, the step of performing access to the target cell through the random access resources corresponding to the available beams sequentially includes : When the data transmission rate requirement is higher than the coverage requirement, perform access to the target cell through the first random access resource corresponding to the first beam according to the first access sequence; If the access to the target cell fails, continue to perform access to the target cell through the second random access resource corresponding to the second beam according to the second access sequence. 6. The random access method according to claim 3, characterized in that, according to the beam quality of the second beam transmitting the SSB among the available beams, the step of determining the second access order of the second beam After that, also include: In the first beam, acquire a second target beam whose beam quality after shifting according to a preset offset value exceeds an available beam threshold value corresponding to the transmission of the SSB; Updating the second access sequence according to the shifted beam quality of the second target beam. 7. The random access method according to claim 3 or 6, characterized in that, according to the access sequence, the step of performing access to the target cell through the random access resources corresponding to the available beams sequentially includes : When the coverage requirement is higher than the data transmission rate requirement, perform access to the target cell through the second random access resource corresponding to the second beam according to the second access sequence; If the access to the target cell fails, continue to perform access to the target cell through the first random access resource corresponding to the first beam according to the first access sequence. 8. The random access method according to claim 4 or 6, wherein the preset offset value is obtained from a cell handover command sent by the target cell or from a broadcast system message. 9. The random access method according to claim 1, wherein when the available beam for transmitting a reference signal corresponds to at least two random access resources, the random access resource corresponding to the available beam is used to perform The steps of accessing the target cell include: performing access to the target cell sequentially through the at least two random access resources according to the beam quality of the downlink beams corresponding to the at least two random access resources; or, Performing access to the target cell sequentially through the at least two random access resources according to the time sequence in which the at least two random access resources are detected; or, According to a random sequence, access to the target cell is performed sequentially through the at least two random access resources. 10. The random access method according to claim 1, characterized in that, before the step of accessing the target cell through the random access resources corresponding to the available beams sequentially according to the access sequence, further comprising: : Obtain random access resources corresponding to the available beams. 11. The random access method according to claim 10, wherein the step of obtaining the random access resource corresponding to the available beam comprises: Obtain random access resources corresponding to the available beams from the cell handover command sent by the target cell. 12. A terminal, characterized by comprising: a processor; a memory connected to the processor, and a transceiver connected to the processor; wherein the processor is used to call and execute the Stored programs and data, to achieve the following steps: Obtaining the beam quality of an available beam for transmitting a target signal; wherein the target signal includes: a channel state indication reference signal CSI-RS and a synchronization signal block SSB; determining an access sequence of the available beams according to the beam quality of the available beams; The transceiver is configured to perform access to the target cell sequentially through the random access resources corresponding to the available beams according to the access sequence. 13. The terminal according to claim 12, wherein the processor is configured to: According to the beam quality of the available beams for transmitting the CSI-RS and SSB, determine the access order of the available beams from high to low. 14. The terminal according to claim 12, wherein the processor is configured to: determining a first access sequence of the first beam according to the beam quality of the first beam transmitting the CSI-RS among the available beams; and / or, determining a second access sequence of the second beam according to the beam quality of the second beam transmitting the SSB among the available beams. 15. The terminal according to claim 14, wherein the processor is configured to: In the second beam, acquire a first target beam whose beam quality after shifting according to a preset offset value exceeds an available threshold value of a beam corresponding to transmitting the CSI-RS; Updating the first access sequence according to the shifted beam quality of the first target beam. 16. The terminal according to claim 14 or 15, wherein the transceiver is used for: When the data transmission rate requirement is higher than the coverage requirement, perform access to the target cell through the first random access resource corresponding to the first beam according to the first access sequence; If the access to the target cell fails, continue to perform access to the target cell through the second random access resource corresponding to the second beam according to the second access sequence. 17. The terminal according to claim 14, wherein the processor is configured to: In the first beam, acquire a second target beam whose beam quality after shifting according to a preset offset value exceeds an available beam threshold value corresponding to the transmission of the SSB; Updating the second access sequence according to the shifted beam quality of the second target beam. 18. The terminal according to claim 14 or 17, wherein the transceiver is used for: When the coverage requirement is higher than the data transmission rate requirement, perform access to the target cell through the second random access resource corresponding to the second beam according to the second access sequence; If the access to the target cell fails, continue to perform access to the target cell through the first random access resource corresponding to the first beam according to the first access sequence. 19. The terminal according to claim 15 or 17, wherein the preset offset value is obtained from a cell handover command sent by the target cell or from a broadcast system message. 20. The terminal according to claim 12, wherein when an available beam for transmitting a reference signal corresponds to at least two random access resources, the transceiver is used for: performing access to the target cell sequentially through the at least two random access resources according to the beam quality of the downlink beams corresponding to the at least two random access resources; or, Performing access to the target cell sequentially through the at least two random access resources according to the time sequence in which the at least two random access resources are detected; or, According to a random sequence, access to the target cell is performed sequentially through the at least two random access resources. 21. The terminal according to claim 12, wherein the processor is configured to: Obtain random access resources corresponding to the available beams. 22. The terminal according to claim 21, wherein the processor is configured to: Obtain random access resources corresponding to the available beams from the cell handover command sent by the target cell. 23. A computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the method according to any one of claims 1 to 11 is realized. Steps of the random access method.