CN114828040A

CN114828040A - Random access method, device, equipment and readable storage medium

Info

Publication number: CN114828040A
Application number: CN202110125725.3A
Authority: CN
Inventors: 周娇; 何文林; 乌力吉; 陈卓
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: 2021-01-29
Filing date: 2021-01-29
Publication date: 2022-07-29

Abstract

The embodiment of the application provides a random access method, a device, equipment and a readable storage medium, wherein the method comprises the following steps: measuring the SSB wave beam; and determining at least two SSB beams according to the measurement values of the SSB beams, wherein the at least two SSB beams respectively correspond to different random access resources, and when the random access initiated by the terminal on one of the random access resources fails, the terminal initiates random access on other random access resources.

Description

Random access method, device, equipment and readable storage medium

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a random access method, a random access device, equipment and a readable storage medium.

Background

In a high-speed moving scene, if the position of a terminal is confirmed by detecting a Reference Signal (SRS), an access failure problem occurs when the terminal is disconnected and accessed again in the moving process.

When random access is performed, a beam error confirmed by a random access resource needs to be completed as soon as possible, and the beam switching may not be timely due to the time delay of terminal measurement, so that the random access failure rate is high.

Disclosure of Invention

An object of the embodiments of the present application is to provide a random access method, apparatus, device and readable storage medium, which solve the problem of high random access failure rate.

In a first aspect, a random access method is provided, which is performed by a terminal, and includes:

measuring the SSB wave beam;

and determining at least two SSB wave beams according to the measurement values of the SSB wave beams, wherein the at least two SSB wave beams respectively correspond to different random access resources, and when the random access initiated by the terminal on one of the random access resources fails, the terminal initiates random access on other random access resources. Optionally, the method of claim 1, wherein the at least two SSB beams comprise: a first SSB beam and a second SSB beam, the first SSB beam having better measurements than the second SSB beam, the method further comprising:

initiating a first random access process through a random access resource corresponding to the first SSB beam; and if the first random access process fails, initiating a second random access process through a random access resource corresponding to the second SSB wave beam.

Optionally, each of the at least two SSB beams has a one-to-one QCL relationship with the TRS configured by the terminal.

Optionally, the method further comprises:

determining a target SSB beam from the at least two SSB beams;

initiating random access through a random access resource corresponding to the target SSB wave beam; wherein the target SSB beam is determined by the terminal or indicated by a network side.

Optionally, the at least two SSB beams belong to the same cell or different cells.

Optionally, if the at least two SSB beams belong to different cells, the method further comprises:

and storing the information of the cell to which each of the at least two SSB beams belongs.

Optionally, the method further comprises:

in the random access process, a receiving network side sends messages in a unified message sending mode or an alternate mode with adjacent beams.

In a second aspect, a random access method is provided, which is performed by a TRP, and includes:

receiving a message sent by a terminal in a random access process, wherein the random access process is initiated by the terminal corresponding to one random access resource in different random access resources through at least two SSB wave beams, the at least two SSB wave beams are determined by the terminal according to the measurement values of the SSB wave beams, and when the random access initiated by the terminal on one random access resource fails, the terminal initiates random access on other random access resources.

Optionally, the method further comprises: receiving information of at least two SSB beams sent by a terminal, indicating a target SSB beam in the at least two SSB beams to the terminal, and initiating random access by the terminal through a random access resource corresponding to the target SSB beam.

Optionally, the method further comprises: and in the random access process, the message is sent to the terminal in a unified message sending mode or an alternate mode with the adjacent wave beams.

Optionally, the method further comprises:

configuring a plurality of CSI-RS resources for a set of reference signals for a TRS, the plurality of CSI-RS resources being associated with a same direction.

Optionally, at least one set of CSI-RS resources of the plurality of CSI-RS resources has one or more of the following characteristics:

configured as RLM RS resources;

a CSI-RS resource configured for RSRP measurement.

Optionally, the number of RLM RS resources and/or CSI-RS resources used for RSRP measurement is based on the number of CSI-RS resources in a cell.

Optionally, the RLM RS resources feedback RLF in cooperation with SSB beams.

In a third aspect, a random access method is provided, which is performed by a terminal, and includes:

reporting RSRP measurement values corresponding to one or more beam identifiers to the TRP;

and acquiring one or more sets of non-competitive random access resources distributed to the terminal by the TRP according to the RSRP measurement value.

Optionally, the different non-contention random access resources correspond to different priorities of random access resources, where the priority of random access resources indicates a priority of the terminal initiating non-contention random access using the non-contention random access resources.

Optionally, the method further comprises:

and if the non-contention random access fails, initiating the contention random access through a random access resource corresponding to a specific SSB beam, wherein the measurement value of the specific SSB beam is greater than the measurement values of other SSB beams.

Optionally, the SSB beam has a QCL relationship with the TRS configured by the terminal.

In a fourth aspect, a random access method is provided, performed by a TRP, including:

receiving RSRP measurement values corresponding to one or more beam identifiers reported by a terminal;

and allocating one or more sets of non-competitive random access resources to the terminal according to the RSRP measurement value.

Optionally, the method further comprises:

and when the terminal fails to perform the first non-contention random access, re-allocating non-contention random access resources to the terminal, or sending a random access response on adjacent beams or all beams of the beams corresponding to the non-contention access resources.

In a fifth aspect, a random access apparatus is provided, including:

the measurement module is used for measuring the SSB wave beam;

a first determining module, configured to determine at least two SSB beams according to measurement values of the SSB beams, where the at least two SSB beams correspond to different random access resources, and when a random access initiated by the terminal on one of the random access resources fails, the terminal can initiate a random access through other random access resources.

In a sixth aspect, a random access apparatus is provided, including:

a second receiving module, configured to receive a message sent by a terminal in a random access process, where the random access process is initiated by the terminal through at least two SSB beams that respectively correspond to one of different random access resources, where the at least two SSB beams are determined by the terminal according to measurement values of the SSB beams, and when a random access initiated by the terminal on one of the random access resources fails, the terminal initiates a random access on another random access resource.

In a seventh aspect, a random access apparatus is provided, including:

the second sending module is used for reporting RSRP measurement values corresponding to one or more beam identifiers to the TRP;

a first obtaining module, configured to obtain one or more sets of non-contention random access resources allocated by the TRP to the terminal according to the RSRP measurement value.

In an eighth aspect, a random access apparatus is provided, including:

a fourth receiving module, configured to receive RSRP measurement values corresponding to one or more beam identifiers reported by a terminal;

a configuration module, configured to allocate one or more sets of non-contention random access resources to the terminal according to the RSRP measurement value.

In a ninth aspect, there is provided a terminal comprising: a processor, a memory and a program stored on the memory and executable on the processor, the program, when executed by the processor, implementing the steps of the method according to the first or third aspect.

In a tenth aspect, a network-side device is provided, including: a processor, a memory and a program stored on the memory and executable on the processor, which program, when executed by the processor, carries out the steps of the method according to the second or fourth aspect.

In an eleventh aspect, there is provided a readable storage medium having a program stored thereon, which when executed by a processor implements steps comprising a method as described in the first or second or third or fourth aspect.

In the embodiment of the application, the terminal may determine the random access resources corresponding to at least two SSB beams based on the SSB beam measurement, and the terminal may select different random access resources to poll for random access, thereby increasing the random access success rate.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

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

fig. 2 is a second flowchart of a random access method according to an embodiment of the present application;

FIG. 3 is a schematic view of an SSB configuration;

FIGS. 4a-4c are schematic diagrams of the same SSB configuration of TRP in the same cell;

fig. 5 is a diagram illustrating a random access apparatus according to an embodiment of the present application;

fig. 6 is a second schematic diagram of a random access device in an embodiment of the present application;

fig. 7 is a schematic diagram of a terminal according to an embodiment of the present application;

fig. 8 is a schematic diagram of a network-side device according to an embodiment of the present application;

fig. 9 is a third flowchart of a random access method according to an embodiment of the present application;

fig. 10 is a fourth flowchart of a random access method according to an embodiment of the present application;

fig. 11 is a third schematic diagram of a random access device in the embodiment of the present application;

fig. 12 is a fourth schematic diagram of a random access device in the embodiment of the present application.

Detailed Description

In a communication system, Radio Link Management (RLM) is evaluated using a Synchronization Signal Block (SSB) and an RLF (Radio Link Failure) indication is sent. Meanwhile, a Tracking Reference Signal (TRS) Quasi-Location (QCL) to SSB is adopted to realize synchronization and time-frequency domain compensation.

The RLM is evaluated by using the SSBs, and the RLF is transmitted, which may cause the accuracy to be reduced due to the time-frequency domain resource allocation of the SSBs. The RLF may be sent with a Channel State Information Reference Signal (CSI-RS) for Tracking Reference Signals (TRSs), with full bandwidth distribution and 5/10ms period, which is relatively higher than the SSB 20 Physical Resource Block (PRB) bandwidth and 20ms period.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. 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 application.

The terms "comprises," "comprising," or any other variation thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means that at least one of the connected objects, such as a and/or B, means that three cases, a alone, B alone, and both a and B, exist.

In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

It is noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE)/LTE Evolution (LTE-Advanced) systems, but may also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described techniques can be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. However, the following description describes a New Radio (NR) system for purposes of example, and NR terminology is used in much of the description below, although the techniques may also be applied to applications other than NR system applications, such as 6th Generation (6G) communication systems.

Referring to fig. 1, an embodiment of the present application provides a random access method, which is executed by a terminal and includes: step 101 and step 102.

Step 101: measuring the SSB wave beam;

step 102: and determining at least two SSB beams according to the measurement values of the SSB beams, wherein the at least two SSB beams respectively correspond to different random access resources, and when the random access initiated by the terminal on one of the random access resources fails, the terminal can initiate random access through other random access resources.

For example, the at least two SSB beams include: a first SSB beam and a second SSB beam, the first SSB beam having better measurements than the second SSB beam, the method further comprising: initiating a first random access process through a random access resource corresponding to the first SSB beam; and if the first random access process fails, initiating a second random access process through a random access resource corresponding to the second SSB wave beam. The first random access procedure may be a first random access procedure, and the second random access procedure may be another random access procedure after the first random access fails.

Illustratively, the terminal autonomously selects the strongest SSB wave beam access, and if the strongest SSB wave beam access fails, selects the second best SSB wave beam access; a Transmission Reception Point (TRP) receives at a Random Access possible resource and feeds back a Random Access Response in a corresponding beam, and if the Access is not successful within a time window, the terminal may re-Access on a suboptimal beam, or the terminal may receive a Random Access Response (RAR) sent by the TRP in a manner of uniformly sending a message or in a manner of alternating with an adjacent beam.

Optionally, each of the at least two SSB beams has a Quasi-co-location (QCL) relationship with the TRS of the terminal.

For example, in a high-speed rail scenario or other cell merging scenarios, different SSB beams are configured between different sites in the same cell. Meanwhile, in order to improve the synchronization precision, each SSB QCL is precisely synchronized with different TRS resource users, and the SSB and the TRS meet the QCL relationship. Different sites of the same cell may also be partially configured with the same SSB or TRS resources and may be used for RLM at the same time.

In the embodiment of the application, the terminal can select different random access resources to poll the random access. Different beam resources are adopted through different random accesses, so that the demodulation performance of the terminal is improved, the random access success rate is increased, and the beam switching probability is reduced. Exemplarily, the terminal reports measurement results of multiple SSBs, selects PRACH resource access corresponding to an optimal (maximum RSRP value) SSB beam, acquires a terminal access preamble at all random access locations by a TRP corresponding to the SSBs, and sends a RAR random access response. If the random access of the overtime terminal fails (for example, a corresponding RAR response to access is not received in a time window), the terminal initiates random access in a second best mode (RSRP value is second), and a TRP corresponding to a second best SSB replies a random access response RAR, so that the requirement that the terminal can finish a random access resident system after the position is moved is met; or, if the random access of the terminal fails over time (for example, the corresponding RAR response to access is not received in the time window), the terminal initiates a random access request again at the PRACH resource location corresponding to the original SSB, and after the TRP receives the random access preamble, different TRPs in the same cell can reply to the RAR and other downlink replies (MSG2 and MSG4) at the same time, and the terminal is alive to reply to the RAR and other downlink replies (MSG2 and MSG4) on the random access resources corresponding to all SSB beams, thereby ensuring that the terminal can access successfully.

It can be understood that the measured values of the at least two SSB beams are smaller than a preset value, for example, the difference between Reference Signal Received Power (RSRP) of the at least two SSB beams is smaller than 3 dB. The number of the SSB beams included in the at least two SSB beams is determined according to the networking mode, for example, the number may be two or more, and the number is not limited in the embodiment of the present application.

In an embodiment of the present application, the method further includes: determining a target SSB wave beam from the at least two SSB wave beams when the random access is firstly carried out or when the random access fails; initiating random access through a random access resource corresponding to the target SSB wave beam; wherein the target SSB beam is determined by the terminal or indicated by a network side.

For example, during the moving process, when the beam is switched, the terminal may report the switching target beam or the TRP determines the beam switching, and then the TRP uses the mac control element to notify the terminal of the Transmission Configuration Indicator (TCI) state (STATES), that is, the QCL relationship between the SSB beam and the SSB and the TRS. And the beam switching time delay is reduced.

In the embodiment of the present application, the at least two SSB beams belong to the same cell or different cells.

In this embodiment, if the at least two SSB beams belong to different cells, the terminal stores information of the cells to which the at least two SSB beams respectively belong.

In an embodiment of the present application, the method further includes:

in the random access process, a message (or referred to as a random access reply message) sent by the network side in a unified message sending manner or an adjacent beam alternating manner is received, for example, message 2(MSG2) or message 4(MSG 4).

In the embodiment of the present application, the TRP alternately issues PRACH replies (for example, MSG2 or MSG4) on two adjacent beams of a Physical Random Access Channel (PRACH) beam, so as to increase the success rate of PRACH Access and avoid terminal Access failure.

In this embodiment of the present application, the terminal may determine, based on the SSB beam measurements, random access resources corresponding to at least two SSB beams, and the terminal may select different random access resources to poll for random access. Different beam resources are adopted by different random accesses, and the success rate of random access is increased.

Referring to fig. 2, an embodiment of the present application provides a random access method, which is performed by a TRP, and includes:

step 201: receiving a message sent by a terminal in a random access process, wherein the random access process is initiated by the terminal corresponding to one random access resource in different random access resources through at least two SSB wave beams, the at least two SSB wave beams are determined by the terminal according to the measurement values of the SSB wave beams, and when the random access initiated by the terminal on one random access resource fails, the terminal initiates random access on other random access resources.

In an embodiment of the present application, the method further comprises: in the random access procedure, a message (such as message 2 or message 4) is transmitted to the terminal in a unified manner or in an alternate manner with the adjacent beams.

In this embodiment of the present application, before the terminal initiates the random access, the method further includes: receiving information of at least two SSB beams sent by a terminal, indicating a target SSB beam in the at least two SSB beams to the terminal, and initiating random access by the terminal through a random access resource corresponding to the target SSB beam.

In embodiments of the application, the different TRPs configure one or more of:

(1) the same or different SSB beams;

referring to fig. 3, and fig. 4a-4c, in the embodiment of the present application, different TRPs configure different SSB beams.

(2) The same or different TRS;

(3) a one-to-one QCL relationship of the SSB beams to the TRS.

In an embodiment of the present application, the method further includes:

configuring a plurality of channel state information reference signal, CSI-RS, resources for a set of reference signals for a TRS, the plurality of CSI-RS resources being associated with a same direction.

In an embodiment of the present application, at least one set of CSI-RS resources of the plurality of CSI-RS resources has one or more of the following characteristics:

(1) configured as RLM RS resource, used for RLM, reporting RLF, and improving link monitoring precision;

optionally, the RLM RS resources and the SSB beams cooperate to feed back RLF, and both RLFs trigger RLF.

For example, a set of CSI-RS resources for TRS requires 4 CSI-RS resources to be configured, and currently, the number of the CSI-RS resources for RLM cannot exceed 2, and one is an SSB beam. The 4 CSI-RS resources for the CSI-RS of the TRS point in the same direction, so one of the 4 CSI-RS resources is randomly selected to configure as a reference signal of the RLM in radio resource control together with the SSB beam for the SSB beam measurement and RLF feedback. The accuracy of link quality monitoring and beam switching is improved by simultaneously detecting the link and the beam through the SSB beam and the CSI RS resource.

(2) A CSI-RS resource configured for RSRP measurement for beam detection of the same cell.

In an embodiment of the present application, the number of RLM RS resources and/or CSI-RS resources used for RSRP measurement is based on the number of CSI-RS resources in a cell.

By configuring one of a plurality of CSI-RS resources for TRS for RLM and RSRP, reference signal resource overhead is reduced.

In the embodiment of the application, in the random access process, the terminal sends a message by using the random access resource corresponding to the beam with the best measurement result, and the network side sends a random access reply message by using a uniform message sending mode or an alternate mode with the adjacent beam, so that the access performance of the terminal is ensured, and the random access success rate is increased.

Referring to fig. 9, an embodiment of the present application provides a random access method, which is executed by a terminal, and includes: step 901 and step 902.

Step 901: reporting RSRP measurement values corresponding to one or more beam identifiers to the TRP;

step 902: and acquiring one or more sets of non-competitive random access resources distributed to the terminal by the TRP according to the RSRP measurement value.

In this embodiment of the present application, different non-contention random access resources correspond to different priorities of random access resources, where the priority of random access resources indicates a priority at which the terminal initiates non-contention random access using the non-contention random access resources.

In an embodiment of the present application, the method further includes: and if the non-contention random access fails, initiating the contention random access through a random access resource corresponding to a specific SSB beam, wherein the measurement value of the specific SSB beam is greater than the measurement values of other SSB beams.

In the embodiment of the application, the access performance of the terminal can be ensured, and the success rate of random access is increased.

Referring to fig. 10, an embodiment of the present application provides a random access method, which is performed by a TRP, and includes the specific steps of: step 1001 and step 1002.

Step 1001: receiving RSRP measurement values corresponding to one or more beam identifiers reported by a terminal;

step 1002: and allocating one or more sets of non-competitive random access resources to the terminal according to the RSRP measurement value.

In an embodiment of the present application, the method further includes:

Referring to fig. 5, an embodiment of the present application provides a random access apparatus, where the apparatus 500 includes:

a measurement module 501, configured to measure an SSB beam;

a first determining module 502, configured to determine at least two SSB beams according to the measurement values of the SSB beams, where the at least two SSB beams correspond to different random access resources, and when a random access initiated by the terminal on one of the random access resources fails, the terminal can initiate a random access through other random access resources.

Optionally, the at least two SSB beams comprise: a first SSB beam and a second SSB beam, the first SSB beam having better measurements than the second SSB beam, the apparatus 500 further comprising:

a random access module, configured to initiate a first random access process through a random access resource corresponding to the first SSB beam; and if the first random access process fails, initiating a second random access process through a random access resource corresponding to the second SSB wave beam.

In an embodiment of the present application, the apparatus further includes:

a second determining module for determining a target SSB beam from the at least two SSB beams;

the initiating module is used for initiating random access through the random access resource corresponding to the target SSB wave beam; wherein the target SSB beam is determined by the terminal or indicated by a network side.

In an embodiment of the present application, if the at least two SSB beams belong to different cells, the apparatus further includes:

and the storage module is used for storing the information of the cell to which the at least two SSB beams belong.

In an embodiment of the present application, the apparatus further includes:

the first receiving module is used for receiving the messages sent by the network side in a unified message sending mode or an alternate adjacent beam sending mode in the random access process.

The device provided by the embodiment of the application can realize each process realized by the method embodiment shown in fig. 1, and achieve the same technical effect, and for avoiding repetition, the details are not repeated here.

Referring to fig. 6, an embodiment of the present application further provides a random access apparatus, where the apparatus 600 includes: a second receiving module 601, configured to receive a message sent by a terminal in a random access process, where the random access process is initiated by the terminal through at least two SSB beams that respectively correspond to one of different random access resources, where the at least two SSB beams are determined by the terminal according to measurement values of the SSB beams, and when a random access initiated by the terminal on one of the random access resources fails, the terminal initiates a random access on another random access resource.

In an embodiment of the present application, the apparatus further includes: a third receiving module, configured to receive information of at least two SSB beams sent by a terminal before the terminal initiates random access, indicate a target SSB beam of the at least two SSB beams to the terminal, and initiate random access by the terminal through a random access resource corresponding to the target SSB beam.

In this embodiment, each of the at least two SSB beams has a one-to-one QCL relationship with the TRS configured by the terminal.

In an embodiment of the present application, the apparatus further includes: and the first sending module is used for sending the message to the terminal in a unified message sending mode or an alternate adjacent beam sending mode in the random access process.

In an embodiment of the present application, the apparatus further includes:

a configuration module configured to configure a plurality of CSI-RS resources for a set of reference signals for TRS, the CSI-RS resources being associated with a same direction.

configured as RLM RS resources;

a CSI-RS resource configured for RSRP measurement.

In the embodiment of the application, the RLM RS resource feeds back RLF in cooperation with an SSB beam.

The device provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in fig. 2, and achieve the same technical effect, and for avoiding repetition, details are not described here again.

Referring to fig. 11, an embodiment of the present application provides a random access apparatus, where the apparatus 1100 includes:

a second sending module 1101, configured to report RSRP measurement values corresponding to one or more beam identifiers to a TRP;

a first obtaining module 1102, configured to obtain one or more sets of non-contention random access resources allocated by the TRP to the terminal according to the RSRP measurement value.

Optionally, the apparatus 1100 further comprises:

and a random access initiating module, configured to initiate a contention random access through a random access resource corresponding to a specific SSB beam if the non-contention random access fails, where a measurement value of the specific SSB beam is greater than measurement values of other SSB beams.

The device provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in fig. 9, and achieve the same technical effect, and for avoiding repetition, details are not described here again.

Referring to fig. 12, in an embodiment of the present application, there is provided a random access apparatus 1200 including:

a fourth receiving module 1201, configured to receive RSRP measurement values corresponding to one or more beam identifiers reported by a terminal;

a configuration module 1202, configured to allocate one or more sets of non-contention random access resources to the terminal according to the RSRP measurement value.

Optionally, the configuration module 1202 is further configured to: and when the terminal fails to perform the first non-contention random access, re-allocating non-contention random access resources to the terminal, or sending a random access response on adjacent beams or all beams of the beams corresponding to the non-contention access resources.

The device provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in fig. 10, and achieve the same technical effect, and for avoiding repetition, details are not described here again.

Fig. 7 is a schematic diagram of a hardware structure of a terminal for implementing the embodiment of the present application.

The terminal 700 includes, but is not limited to: a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709, and a processor 710.

Those skilled in the art will appreciate that the terminal 700 may further include a power supply (e.g., a battery) for supplying power to various components, which may be logically connected to the processor 710 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system. The terminal structure shown in fig. 7 does not constitute a limitation of the terminal, and the terminal may include more or less components than those shown, or combine some components, or have a different arrangement of components, and will not be described again here.

It should be understood that in the embodiment of the present application, the input Unit 704 may include a Graphics Processing Unit (GPU) 7041 and a microphone 7042, and the Graphics Processing Unit 7041 processes image data of still pictures or videos obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 707 includes a touch panel 7071 and other input devices 7072. The touch panel 7071 is also referred to as a touch screen. The touch panel 7071 may include two parts of a touch detection device and a touch controller. Other input devices 7072 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.

In the embodiment of the present application, the radio frequency unit 701 receives downlink data from a network side device and then processes the downlink data in the processor 710; in addition, the uplink data is sent to the network side equipment. In general, radio frequency unit 701 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 memory 709 may be used to store software programs or instructions as well as various data. The memory 1209 may mainly include a storage program or instruction area and a storage data area, wherein the storage program or instruction area may store an operating system, an application program or instruction (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. In addition, the Memory 709 may include a high-speed random access Memory and a nonvolatile Memory, where the nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.

Processor 710 may include one or more processing units; alternatively, processor 710 may integrate an application processor that handles primarily the operating system, user interface, and application programs or instructions, etc. and a modem processor that handles primarily wireless communications, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into processor 710.

The terminal provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in fig. 1, and achieve the same technical effect, and for avoiding repetition, details are not described here again.

The embodiment of the application also provides network side equipment. As shown in fig. 8, the network-side device 800 includes: antenna 801, radio frequency device 802, baseband device 803. The antenna 801 is connected to a radio frequency device 802. In the uplink direction, the rf device 802 receives information via the antenna 801 and sends the received information to the baseband device 803 for processing. In the downlink direction, the baseband device 803 processes information to be transmitted and transmits the information to the radio frequency device 802, and the radio frequency device 802 processes the received information and transmits the processed information through the antenna 801.

The above band processing means may be located in the baseband means 803, and the method performed by the network side device in the above embodiment may be implemented in the baseband means 803, where the baseband means 803 includes a processor 804 and a memory 805.

The baseband apparatus 803 may include, for example, at least one baseband board, on which a plurality of chips are disposed, as shown in fig. 8, where one of the chips, for example, the processor 804, is connected to the memory 805 to call up the program in the memory 805 to perform the network side device operation shown in the above method embodiment.

The baseband device 803 may further include a network interface 806, such as a Common Public Radio Interface (CPRI), for exchanging information with the radio frequency device 802.

Specifically, the network side device of the embodiment of the present invention further includes: the instructions or programs stored in the memory 805 and capable of being executed on the processor 804, and the processor 804 calls the instructions or programs in the memory 805 to execute the methods executed by the modules shown in fig. 6, and achieve the same technical effects, which are not described herein for avoiding repetition.

The network side device provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in fig. 2, and achieve the same technical effect, and for avoiding repetition, details are not described here again.

An embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the method embodiment shown in fig. 1 or fig. 2, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

Wherein, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.

The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware or may be embodied in software instructions executed by a processor. The software instructions may consist of corresponding software modules that may be stored in RAM, flash memory, ROM, EPROM, EEPROM, registers, hard disk, a removable hard disk, a compact disk, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may be carried in a core network interface device. Of course, the processor and the storage medium may reside as discrete components in a core network interface device.

Those skilled in the art will recognize that in one or more of the examples described above, the functions described herein may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The above-mentioned embodiments, objects, technical solutions and advantages of the present application are further described in detail, it should be understood that the above-mentioned embodiments are only examples of the present application, and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present application should be included in the scope of the present application.

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

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

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

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

It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to encompass such modifications and variations.

Claims

1. A random access method performed by a terminal, comprising:

measuring the SSB wave beam of the synchronous signal block;

and determining at least two SSB beams according to the measurement values of the SSB beams, wherein the at least two SSB beams respectively correspond to different random access resources, and when the random access initiated by the terminal on one of the random access resources fails, the terminal initiates random access on other random access resources.

2. The method of claim 1, wherein the at least two SSB beams comprise: a first SSB beam and a second SSB beam, the first SSB beam having better measurements than the second SSB beam, the method further comprising:

3. The method of claim 1, wherein each of the at least two SSB beams has a one-to-one quasi co-located QCL relationship with a tracking reference signal TRS configured by the terminal.

4. The method of claim 1, further comprising:

determining a target SSB beam from the at least two SSB beams;

5. The method of claim 1, wherein the at least two SSB beams belong to the same cell or different cells.

6. The method of claim 5, wherein if the at least two SSB beams belong to different cells, the method further comprises:

7. The method of claim 1, further comprising:

in the random access process, the receiving network side transmits the message in a unified mode or in an alternating mode with adjacent beams.

8. A random access method performed by a TRP, comprising:

receiving a message transmitted by a terminal in a random access procedure,

the random access process is initiated by a terminal through at least two SSB wave beams corresponding to one random access resource in different random access resources, wherein the at least two SSB wave beams are determined by the terminal according to the measurement values of the SSB wave beams, and when the random access initiated by the terminal on one random access resource fails, the terminal initiates random access on other random access resources.

9. The method of claim 8, wherein before the terminal initiates random access, the method further comprises:

receiving information of at least two SSB beams sent by a terminal, indicating a target SSB beam in the at least two SSB beams to the terminal, and initiating random access by the terminal through a random access resource corresponding to the target SSB beam.

10. The method of claim 8, wherein each of the at least two SSB beams has a one-to-one QCL relationship with a configured TRS of the terminal.

11. The method of claim 8, further comprising:

and in the random access process, the message is sent to the terminal in a unified message sending mode or an alternate mode with the adjacent wave beams.

12. The method of claim 8, further comprising:

13. The method of claim 12, wherein at least one set of the plurality of CSI-RS resources has one or more of the following characteristics:

configured as radio link measurement reference signal, RLM, RS, resources;

a CSI-RS resource configured for reference signal received power, RSRP, measurement.

14. The method of claim 13, wherein the number of RLM RS resources and/or CSI-RS resources used for RSRP measurement is based on the number of CSI-RS resources in a cell.

15. The method of claim 12, wherein the RLM RS resources feed back radio link failure, RLF, in cooperation with SSB beams.

16. A random access method performed by a terminal, comprising:

17. The method of claim 16, wherein different non-contention random access resources correspond to different random access resource priorities, and wherein the random access resource priorities indicate priorities for the terminal to initiate non-contention random access using the non-contention random access resources.

18. The method of claim 16, further comprising:

19. The method of claim 18, wherein the SSB beam has a QCL relationship with the terminal-configured TRS.

20. A random access method performed by a TRP, comprising:

21. The method of claim 20, wherein different non-contention random access resources correspond to different random access resource priorities, and wherein the random access resource priorities indicate priorities for the terminal to initiate non-contention random access using the non-contention random access resources.

22. The method of claim 21, further comprising:

and when the first non-competitive random access of the terminal fails, re-allocating non-competitive random access resources to the terminal, or sending random access response on adjacent beams or all beams of the beams corresponding to the non-competitive access resources.

23. A random access apparatus, comprising:

the measurement module is used for measuring the SSB wave beam;

a first determining module, configured to determine at least two SSB beams according to measurement values of the SSB beams, where the at least two SSB beams correspond to different random access resources, respectively, and when a random access initiated by a terminal on one of the random access resources fails, the terminal can initiate a random access through other random access resources.

24. A random access apparatus, comprising:

25. A random access apparatus, comprising:

and the first acquisition module is used for acquiring one or more sets of non-competitive random access resources distributed to the terminal by the TRP according to the RSRP measurement value.

26. A random access apparatus, comprising:

27. A terminal, comprising: a processor, a memory and a program stored on the memory and executable on the processor, the program implementing the steps of the method according to any one of claims 1 to 7 or the steps of the method according to any one of claims 16 to 19 when executed by the processor.

28. A network-side device, comprising: a processor, a memory and a program stored on the memory and executable on the processor, the program, when executed by the processor, implementing the steps of the method according to any one of claims 8 to 15, the steps of the method according to any one of claims 20 to 22.

29. A readable storage medium, characterized in that it has stored thereon a program which, when being executed by a processor, carries out steps comprising a method according to any one of claims 1 to 22.