CN115245035A

CN115245035A - Random access method, device, terminal, network equipment and storage medium

Info

Publication number: CN115245035A
Application number: CN202080077065.XA
Authority: CN
Inventors: 林雪; 石聪
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-02-07
Filing date: 2020-02-07
Publication date: 2022-10-25
Also published as: WO2021155591A1

Abstract

The application relates to a random access method, a device, a terminal, network equipment and a storage medium, wherein the terminal receives resource configuration information indicated by the network equipment, wherein the resource configuration information can indicate PUSCH resources corresponding to CFRA; then, the terminal may perform random access on the PUSCH resource indicated by the resource configuration information. By adopting the method, the terminal can definitely determine which PUSCH resources are the PUSCH resources corresponding to the CFRA, and the adaptability of the terminal random access is improved.

Description

Random access method, device, terminal, network equipment and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a random access method, an apparatus, a terminal, a network device, and a storage medium.

Background

Many services in a New Radio (NR) system of the fifth generation require low delay and high reliability, and in order to reduce signaling overhead and random access delay, a two-step random access process, that is, at least two signaling interactions between a terminal and a base station, is introduced in the NR system.

The two-step random access includes two-step random access based on contention and two-step random access based on non-contention, wherein the two-step random access based on non-contention can be used for switching a Handover scenario. In the two-step non-contention random access mode, no solution exists for the configuration mode of random access resources.

Disclosure of Invention

The embodiment of the application provides a random access method, a device, a terminal, a network device and a storage medium, which can be used for indicating physical uplink shared control channel (PUSCH) resources in non-contention random access.

In a first aspect, a random access method includes:

receiving resource configuration information indicated by network equipment, wherein the resource configuration information is used for indicating physical uplink shared control channel (PUSCH) resources corresponding to non-competitive random access (CFRA);

and carrying out random access on the PUSCH resource indicated by the resource configuration information.

In an embodiment, the resource configuration information is further used to indicate PUSCH resources corresponding to the contention random access CBRA.

In one embodiment, the resource configuration information includes first configuration information and second configuration information; the first configuration information is used for indicating PUSCH resources corresponding to the CFRA; the second configuration information is used for indicating PUSCH resources corresponding to the CBRA.

In an embodiment, the first configuration information is further used to indicate PUSCH resources corresponding to CBRA.

In one embodiment, the resource configuration information further includes third configuration information; the third configuration information is used for indicating PUSCH resources corresponding to the CBRA.

In one embodiment, the first configuration information and the second configuration information comprise one or more configuration parameters; the first configuration information and the second configuration information contain the same type of configuration parameters.

In one embodiment, the types of the configuration parameters include: at least one of a modulation mode, a time-frequency resource starting position, the number of occupied Resource Blocks (RB), the number of continuous symbols and demodulation reference signal (DMRS) information.

In an embodiment, in the first configuration information and the second configuration information, a value of at least one type of configuration parameter is different.

In one embodiment, the above-mentioned transmittable data size TB size corresponding to the first configuration information is the same as the TB size corresponding to the second configuration information.

In one embodiment, the TB size is determined by one or more types of configuration parameters in the configuration information.

In an embodiment, the receiving resource configuration information indicated by the network device includes:

receiving a Radio Resource Control (RRC) message transmitted by target network equipment through original network equipment; the RRC message includes the partial bandwidth BWP and resource configuration information.

In one embodiment, the RRC message further includes an indication parameter for indicating the PRACH resource of the physical random access channel and the Preamble, and an offset between the PRACH resource access occasion RO and the PUSCH resource occasion PO.

In one embodiment, the indication parameter includes: one or more reference signals corresponding to the CFRA, and a mapping relationship between the one or more reference signals and the one or more preambles.

In one embodiment, the one or more reference signals comprise one or more synchronization signal blocks SSB and/or one or more channel state information reference signals CSI-RS.

In an embodiment, before performing the random access on the PUSCH resource indicated by the resource configuration information, the method further includes:

determining available PRACH resources from one or more reference signals;

determining an available PUSCH Resource Unit (PRU) according to the available resources, the offset and the resource configuration information;

determining available preambles for the CFRA according to the one or more reference signals;

and establishing a corresponding relation between the available Preamble and the available PRUs according to the mapping ratio between the number of the available Preamble and the number of the available PRUs.

In an embodiment, the performing random access on the PUSCH resource indicated by the resource configuration information includes:

selecting a target reference signal from the one or more reference signals according to the measurement result corresponding to the one or more reference signals, and determining a Preamble corresponding to the target reference signal as a target Preamble;

determining a target PRU corresponding to the target Preamble based on the corresponding relation;

a first message of random access is transmitted by the target PRU.

In a second aspect, a random access method includes:

indicating resource configuration information to a terminal, wherein the resource configuration information is used for indicating information of physical uplink shared control channel (PUSCH) resources corresponding to non-competitive random access (CFRA);

and receiving the random access initiated by the terminal on the PUSCH resource indicated by the resource configuration information.

In one embodiment, the resource configuration information further includes third configuration information; the third configuration information is used for indicating the PUSCH resources corresponding to the CBRA.

In an embodiment, the indicating resource configuration information to the terminal includes:

transmitting a Radio Resource Control (RRC) message to a terminal through original network equipment; the RRC message includes a partial bandwidth BWP and resource configuration information.

In an embodiment, the RRC message further includes an indication parameter for indicating a physical random access channel PRACH resource and a Preamble, and an offset between a PRACH resource access occasion RO and a PUSCH resource occasion PO.

In a third aspect, a random access apparatus includes a receiving module and an access module:

a receiving module, configured to receive resource configuration information indicated by a network device, where the resource configuration information is used to indicate a physical uplink shared control channel PUSCH resource corresponding to a non-contention random access CFRA;

and the access module is used for carrying out random access on the PUSCH resource indicated by the resource configuration information.

In a fourth aspect, a random access apparatus includes a sending module and a receiving module:

a sending module, configured to indicate resource configuration information to a terminal, where the resource configuration information is used to indicate information of a physical uplink shared control channel (PUSCH) resource corresponding to a non-contention random access (CFRA);

and the receiving module is used for receiving the random access initiated on the PUSCH resource indicated by the resource configuration information by the terminal.

In a fifth aspect, a terminal comprises a receiver and a transmitter:

the system comprises a receiver and a control unit, wherein the receiver is used for receiving resource configuration information indicated by network equipment, and the resource configuration information is used for indicating physical uplink shared control channel (PUSCH) resources corresponding to non-competitive random access (CFRA);

and the transmitter is used for cooperating with the receiver and carrying out random access on the PUSCH resource indicated by the resource configuration information.

In a sixth aspect, a network device comprises a transmitter and a receiver:

a transmitter, configured to indicate resource configuration information to a terminal, where the resource configuration information is used to indicate information of a physical uplink shared control channel (PUSCH) resource corresponding to a non-contention random access (CFRA);

and the receiver is used for receiving the random access initiated on the PUSCH resource indicated by the resource configuration information by the terminal.

In a seventh aspect, a computer readable storage medium has a computer program stored thereon, the computer program when executed by a processor implementing the steps of:

In an eighth aspect, a computer readable storage medium having a computer program stored thereon, the computer program when executed by a processor implementing the steps of:

and receiving the random access initiated on the PUSCH resource indicated by the resource configuration information by the terminal.

According to the random access method, the random access device, the terminal, the network equipment and the storage medium, the terminal receives the resource configuration information indicated by the network equipment, and the resource configuration information can indicate the PUSCH resource corresponding to the CFRA, so that the terminal can definitely determine which PUSCH resources are the PUSCH resources corresponding to the CFRA according to the resource configuration information after acquiring the resource configuration information, the terminal can send information which needs to be transmitted to the network equipment when the random access is carried out through the PUSCH resources, and the adaptability of the random access of the terminal is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is an application environment diagram of a random access method according to an embodiment;

fig. 2 is a flowchart of a random access method according to an embodiment;

FIG. 3 is a diagram illustrating an association relationship between POs and ROs in one embodiment;

fig. 4 is a schematic diagram of a correspondence between a Preamble and an available PRU in one embodiment;

fig. 5 is a flowchart of a random access method according to another embodiment;

FIG. 6 is a diagram illustrating a mapping relationship between a reference signal and a Preamble in one embodiment;

FIG. 7 is a diagram illustrating a mapping relationship between a reference signal and a Preamble in another embodiment;

fig. 8 is a flowchart of a random access method according to another embodiment;

fig. 9 is a signaling interaction diagram of a random access method according to an embodiment;

fig. 10 is a block diagram of a random access device provided by an embodiment;

fig. 11 is a block diagram of a random access apparatus according to another embodiment;

fig. 12 is a block diagram of a random access apparatus according to another embodiment;

fig. 13 is a block diagram of a random access apparatus according to another embodiment;

fig. 14 is a schematic internal structural diagram of a network device according to an embodiment.

Fig. 15 is a schematic internal structure diagram of a terminal according to an embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In an NR system, a terminal may trigger random access in a variety of scenarios. Currently, the Random Access procedure may include Contention Based Random Access (CBRA) and non-Contention Based Random Access (CFRA).

The CBRA process may include the following 4 steps (for short, 4-step CBRA):

step one, the terminal sends a message 1 (MSG 1 for short) to the network device. The terminal sends a Random Access Preamble sequence (Preamble) to the network device through a Physical Random Access Channel (PRACH) resource.

Step two, after receiving the MSG1, the Network device sends a Random Access Response (RAR) message to the terminal, where the RAR includes uplink resource information used by the terminal when sending the MSG3, and the Network device allocates a temporary Radio Network Temporary Identity (RNTI) and uplink timing information of the terminal to the terminal.

And step three, the terminal sends the MSG3 to the network. After the terminal successfully receives the RAR, the terminal sends MSG3 in the uplink resource specified by the RAR message, which is mainly used to inform the network of what event triggered the random access procedure.

Step four, the network device sends MSG4 to the terminal, for resolving Resource contention conflict and transmitting Radio Resource Control (RRC for short) configuration message to the terminal.

The random access procedure for the CFRA includes the above-described step one and step two. The CBRA and the CFRA are different in that the CBRA requires the terminal to select a Preamble and transmit a Physical Random Access Channel (PRACH) resource corresponding to the Preamble, and the PRACH and the Preamble are determined according to an instruction of the network device in the CFRA process.

Since many services in the NR system require low delay and high reliability, completing random access through four information interactions leads to an excessively long delay. In order to reduce signaling overhead and random access delay, a two-step random access process is introduced into the NR system, that is, at least two signaling interactions between a terminal and a network device need to be performed, where the two steps include:

step one, the terminal sends a Preamble to the network device through PRACH resource, and sends load information to the network device through Physical Uplink Shared Channel (PUSCH) resource, where the load information may be information of the MSG3 or user data to be transmitted.

And step two, the network equipment sends a random access response to the terminal.

As can be known from the above two steps, in the two-step random access process, the Preamble is sent to the network device through the PRACH resource, and the load information is sent to the network device through the PUSCH resource. Therefore, before sending the Preamble and the load information to the network device, the terminal needs to determine the PRACH resource and the PUSCH resource corresponding to the sending of the information.

The two-step random access process may be two-step CBRA or two-step CFRA, where the CFRA may be applied in a Handover scenario. For two-step CFRA, how to obtain PUSCH resources indicated by the network device is an urgent problem to be solved.

The random access method provided by the embodiment of the application can be applied to the technical field of communication. Fig. 1 is a schematic view of an application scenario of a random access method according to an embodiment of the present application. As shown in fig. 1, the scenario includes a network device 100 and a terminal 200, and the network device 100 and the terminal 200 communicate via a network. The network device 100 may be a Base Transceiver Station (BTS) in Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), a Base Station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), an evolved Node B (eNB, eNodeB) in LTE, a relay Station, an Access point, or a Base Station in a 5G network, and the like, which are not limited herein.

Terminal 200 may be a wireless terminal that may refer to a device providing voice and/or other traffic data connectivity to a user, a handheld device having wireless connection functionality, or other processing device connected to a wireless modem. A wireless terminal, which may be a mobile terminal such as a mobile phone (or called a "cellular" phone) and a computer having a mobile terminal, for example, a portable, pocket, hand-held, computer-included or vehicle-mounted mobile device, may communicate with one or more core networks via a Radio Access Network (RAN), and exchange languages and/or data with the RAN. For example, personal Communication Service (PCS) phones, cordless phones, session Initiation Protocol (SIP) phones, wireless Local Loop (WLL) stations, personal Digital Assistants (PDAs), and the like.

It should be noted that the random access method of the present application is not limited to solve the above technical problems, and may also be used to solve other technical problems, and the present application is not limited thereto.

The technical solution of the present application will be described in detail below with specific examples. These several specific embodiments may be combined with each other below, and details of the same or similar concepts or processes may not be repeated in some embodiments.

Fig. 2 is a flow chart of a random access method in one embodiment. The random access method in this embodiment is described by taking a terminal operating in fig. 1 as an example. As shown in fig. 2, the random access method includes the following steps:

s101, receiving resource configuration information indicated by network equipment, wherein the resource configuration information is used for indicating PUSCH resources corresponding to the CFRA.

The random access method in the application can be applied to two-step CFRA, and the terminal can determine PUSCH resources corresponding to the two-step CFRA according to the resource configuration information by receiving the resource configuration information indicated by the network equipment. The network device may indicate the resource configuration information to the connected terminal through a dedicated signaling, where the dedicated signaling may be a Physical Downlink Control Channel (PDCCH for short) order or an RRC message, which is not limited herein.

Specifically, when the network device indicates the resource configuration information, the network device may directly indicate, through the dedicated instruction, values of each parameter included in the resource configuration information, or may indicate, through the dedicated instruction, an index value of the resource configuration information, so that after receiving the index value, the terminal may query, according to a locally stored resource configuration information list, the resource configuration information corresponding to the index value; the above indication mode is not limited herein.

When the resource allocation information is used to indicate PUSCH resources corresponding to two CFRA steps, the resource allocation information may include various parameters, for example, the number of resources corresponding to the PUSCH resources and the resource location are indicated, which is not limited herein. Optionally, the resource configuration information may further include other corresponding indication information in the random access.

And S102, performing random access on the PUSCH resource indicated by the resource configuration information.

After the terminal acquires the resource configuration information, the terminal may determine a PUSCH resource corresponding to random access according to the resource configuration information and initiate random access.

When initiating random access, the terminal may send load information through PUSCH resources. The load information may be used to inform the network of what scenario the random access is triggered, the reason for triggering the random access, and the terminal identification information; user data may also be included. For example, in a handover scenario, when a terminal is handed over from an original network device to a target network device, random access may be initiated to the target network device, and user data that is not transmitted may be sent to the target network device through load information.

When initiating random access, the terminal sends a random access request MSGA to the network equipment. The MSGA includes load information and a Preamble, and the terminal may send the load information through PUSCH resources and may send the Preamble through PRACH resources.

After receiving the random access request MSGA sent by the terminal, the network device may demodulate the Preamble and the load information in the MSGA. If the Preamble and the load information are demodulated successfully, indicating the Downlink allocated resource position to the terminal through a Physical Downlink Control Channel (PDCCH) scrambled by the C-RNTI; if Preamble demodulation is successful but load information demodulation is not successful, the resource location of RAR can be indicated to the terminal through PDCCH scrambled by MSGB-RNTI. The MSGB-RNTI is obtained by calculation according to the RO time-frequency position of the target Preamble sent by the terminal, and the C-RNTI is contained in the load information sent by the UE.

After the terminal sends the MSGA, a random access response monitoring window is opened, and a PDCCH scrambled by the C-RNTI and a PDCCH scrambled by the MSGB-RNTI are monitored at the same time. And under the condition that the terminal monitors the PDCCH scrambled by the C-RNTI, if the downlink allocation at least comprises uplink timing information, the random access is considered to be successful. And if the terminal monitors the PDCCH scrambled by the MSGB-RNTI and successfully decodes the RAR, and the RAPID carried by a certain subheader in the RAR is the same as PREAMBLE _ INDEX sent to the network equipment by the terminal, retransmitting the load information to the network equipment according to the uplink resource indicated in the RAR.

According to the random access method, the terminal receives the resource configuration information indicated by the network equipment, and the resource configuration information can indicate the PUSCH resource corresponding to the CFRA, so that the terminal can definitely determine which PUSCH resources are the PUSCH resources corresponding to the CFRA according to the resource configuration information after acquiring the resource configuration information, the terminal can send the information which needs to be transmitted to the network equipment when the terminal performs random access through the PUSCH resources, and the adaptability of the terminal in random access is improved.

In the NR system, in order to ensure the successful access of the random access, the network device may also indicate the random access resource of the CBRA when indicating the random access resource of the CFRA for the terminal, and may back to the CBRA to continue the access when the terminal cannot determine the resource satisfying the threshold from among the CFRA candidate resources. That is, the resource configuration information may also be used to indicate PUSCH resources corresponding to the contention random access CBRA.

The following describes a manner of indicating the resource configuration information by some embodiments, specifically referring to the following:

in one implementation, the resource configuration information indicated by the network device may include first configuration information and second configuration information. The first configuration information is used for indicating a PUSCH resource corresponding to a CBRA, and the second configuration information is used for indicating a PUSCH resource corresponding to a CFRA. The first configuration information and the second configuration information may each include one or more configuration parameters, where a type of the configuration parameter included in the first configuration information may be the same as or different from a type of the configuration parameter included in the second configuration information. Optionally, the types of the configuration parameters included in the first configuration information and the second configuration information are the same.

In one implementation, the types of the configuration parameters may include: at least one of a modulation mode, a time-frequency Resource starting position, a number of occupied Resource Blocks (RBs), a number of persistent symbols, and Demodulation Reference Signal (DMRS) information. The time-frequency resource starting position is used for determining a starting position of a PUSCH resource, the RB number may be used for determining a range of a frequency domain resource required for initiating random access, the persistent symbol number may be used for determining a range of a time domain resource required for initiating random access, the DMRS information is used for indicating demodulation information of load information, and the modulation mode is used for indicating a modulation mode of data transmitted in the PUSCH resource.

In the first configuration information and the second configuration information, values of the configuration parameters may be the same or different. And when the values of the configuration parameters in the first configuration information and the second configuration information are the same, the first configuration information and the second configuration information indicate the same PUSCH resource. Optionally, in the first configuration information and the second configuration information, values of at least one type of configuration parameter are different, that is, the first configuration information and the second configuration information indicate different PUSCH resources.

According to the random access method, the network equipment respectively indicates the PUSCH resource for the CBRA and the random access resource for the CFRA through the resource configuration information, and when the terminal cannot determine the resource meeting the threshold value in the CFRA candidate resources, the random access can be continuously initiated according to the CBRA resource, so that the reliability of the random access is improved.

In one embodiment, an indication method is related to resource configuration information. The first configuration information is further used to indicate PUSCH resources corresponding to the CBRA. That is to say, CBRA and CFRA may share PUSCH resources, the configuration information used for indicating the PUSCH resources of CBRA includes first configuration information and second configuration information, and when a terminal initiates CBRA according to the resource configuration information, the terminal may select the first configuration information or the second configuration information as needed to determine corresponding PUSCH resources. For example, the resource Configuration information may include PUSCH Configuration #1 and PUSCH Configuration #2, where PUSCH Configuration #1 is used to indicate PUSCH resources for CFRA, and PUSCH Configuration #1 and PUSCH Configuration #2 are used to indicate PUSCH resources for CBRA.

The network device may configure the first configuration information and the second configuration information for the terminal, and at the same time, the network device may indicate that the first configuration information may also be used to indicate a PUSCH resource corresponding to a CBRA. Specifically, when the network device indicates the first Configuration information and the second Configuration information, the network device may indicate the first Configuration information and the second Configuration information by using an index value of a PUSCH Configuration, or may indicate values of each parameter in the PUSCH Configuration, which is not limited herein. When the network device indicates, to the terminal, the first configuration information may also be used to indicate a PUSCH resource corresponding to the CBRA, the first configuration information may be indicated by an index value of the first configuration information, or may also be indicated by a field position indicated by the first configuration information, which is not limited herein.

According to the random access method, the message content indicated by the network equipment to the terminal is less, and the signaling overhead can be saved; further, the network device indicates multiple sets of sub-configuration information to the terminal, so that when determining the PUSCH resource corresponding to the CBRA, the terminal can select appropriate sub-configuration information according to the transmitted data amount, which can improve the resource utilization rate and avoid causing PUSCH resource waste. In addition, since the first configuration information may indicate both the PUSCH resource corresponding to CBRA and the PUSCH resource corresponding to CFRA, when the terminal moves back to CBRA from CFRA for access, the first configuration information more easily satisfies the fallback condition.

In one embodiment, another indication is related to resource configuration information. When the first configuration information indicating the PUSCH resources corresponding to the CFRA is different from the second configuration information indicating the PUSCH resources corresponding to the CBRA, the network device may configure the terminal with the third configuration information in order to meet the requirement of the CBRA. The resource configuration information further includes third configuration information; and the third configuration information is used for indicating PUSCH resources corresponding to the CBRA.

That is to say, the network device configures a PUSCH resource corresponding to the CFRA for the terminal independently, and the CFRA and the CBRA do not share the PUSCH resource. For example, the resource configuration information configured by the network device for the terminal may include: and a PUSCH Configuration #1, a PUSCH Configuration #2, and a PUSCH Configuration #3, which respectively indicate different PUSCH resources, wherein the PUSCH Configuration #1 is used for indicating a PUSCH resource corresponding to the CFRA, and the PUSCH Configuration #2 and the PUSCH Configuration #3 are used for indicating a PUSCH resource corresponding to the CBRA.

Specifically, when the network device indicates the third Configuration information to the terminal, the third Configuration information may be indicated by an index value of the PUSCH Configuration, or may be indicated by indicating each parameter value in the PUSCH Configuration, which is not limited herein.

When the terminal is returned from the CFRA to the CBRA for continuous access, the size TB size corresponding to the first configuration information is the same as the size TB size corresponding to the second configuration information. The TB size may be determined by one or more types of configuration parameters in the configuration information, for example, by configuration parameters such as the number of RBs and the modulation scheme. That is, when initiating the CFRA, the terminal may calculate a TB size according to one or more type configuration parameters in the first configuration information; when the terminal initiates the CBRA, it may also calculate one TB size according to a part of the parameters in the second configuration information, and may implement the fallback from the CFRA to the CBRA only when the two TB sizes are the same. The TB size associated with the third allocation parameter information may be the same as or different from the TB size associated with the first allocation information.

According to the random access method, the network equipment independently configures the PUSCH resources for the CFRA, so that the terminal can definitely obtain the PUSCH resources corresponding to the CFRA according to the resource configuration information, and the terminal can smoothly initiate a random access request to the network equipment.

In one embodiment, the two-step CFRA may be applied to a handover scenario. In a switching scene, a terminal can receive a Radio Resource Control (RRC) message transmitted by target network equipment through original network equipment; the RRC message at least includes a partial Bandwidth (BWP) and the resource configuration information. Optionally, the RRC message may be an RRC reconfiguration message.

According to the random access method, when the terminal performs network switching, the time delay in the network switching can be reduced through two steps of CFRA.

In one embodiment, a method for indicating PRACH resources to a terminal through resource configuration information by a network device is involved. The RRC message may further include an indication parameter for indicating PRACH resources and Preamble, and an offset between a PRACH resource access Occasion (RAOccasion, abbreviated as RO) and a PUSCH resource Occasion (PUSCH contention, abbreviated as PO). Optionally, the indication parameter may be indicated to the terminal through a RACH-configdedicate IE in the RRC reconfiguration message. The terminal can determine to initiate the corresponding PRACH resource of random access through the information, and determine PO according to the offset of RO and PO, further obtain PUSCH resource.

Optionally, the indication parameter may include: one or more reference signals corresponding to the CFRA, and a mapping relationship between the one or more reference signals and the one or more preambles. In the mapping relationship, one reference signal may correspond to one Preamble, and the preambles corresponding to different reference signals may be the same or different.

Optionally, the one or more reference signals include one or more synchronization signal blocks SSB and/or one or more channel state information reference signals CSI-RS. The network device may indicate a plurality of available reference signals to the terminal, and the reference signals may be indicated by the SSB index and/or the CSI-RS index.

According to the random access method, the resource configuration information can also be used for indicating the PRACH resource, so that the terminal can simultaneously obtain the PRACH resource and the PUSCH resource corresponding to the random access after receiving the RRC message once, and the signaling overhead is saved.

In one embodiment, a manner is involved in which a network device determines PUSCH resources based on resource configuration information. Specifically, after the terminal acquires the Resource configuration information, a corresponding relationship between an available Preamble and an available PUSCH Resource Unit (PUSCH Resource Unit, PRU for short) may be established. The terminal may then determine a PUSCH resource corresponding to the CFRA based on the correspondence.

Specifically, the terminal may determine available PRACH resources for CFRA from one or more reference signals for CFRA; then determining available PUSCH Resource Units (PRUs) according to the available PRACH resources, the offset and the resource configuration information; finally, determining available Preamble for CFRA according to one or more reference signals; and establishing a corresponding relation between the available Preamble and the available PRUs according to the mapping ratio between the number of the available Preamble and the number of the available PRUs.

Specifically, the network device indicates a plurality of SSB indexes for CFRA to the terminal; each SSB index corresponds to multiple ROs, or corresponds to one RO, and the terminal may determine available PRACH resources according to the multiple ROs. Further, the terminal may determine the location of the PO associated with the RO according to the offset of the RO and the PO, as shown in fig. 3. After determining the POs, the terminal determines a plurality of starting positions of the available PUSCH resources, and then further determines an available PRU in the available PUSCH resources according to the configuration parameters in the resource configuration information. The terminal can determine the starting position of the PRU according to the starting position of the time-frequency resource in the resource configuration information, determine the number of the PRUs according to the number of occupied Resource Blocks (RB), determine the time domain range corresponding to the PRUs according to the number of the continuous symbols, and obtain the available PRUs corresponding to the terminal. Meanwhile, the terminal may also determine all available preambles for CFRA supported under the current configuration according to the reference signal.

Further, the terminal may divide the number of available preambles by the number of available PRUs to obtain a mapping ratio between the available preambles and the available PRUs. The mapping ratio may be used to determine how many preambles each PRU corresponds to. For example, when the mapping ratio is 2, in the correspondence between the available preambles and the available PRUs established by the terminal, two preambles may correspond to one PRU, as shown in fig. 4.

According to the random access method, after the terminal acquires the resource configuration information, the terminal can acquire the corresponding PRU according to the corresponding relation after determining the target Preamble by establishing the corresponding relation between the available Preamble and the available PRU, so that the reasonable planning of the PUSCH resource is realized, and the resource waste is avoided.

Fig. 5 is a flowchart illustrating a random access method in an embodiment, where the embodiment relates to a manner in which a terminal performs random access on a PUSCH resource corresponding to resource configuration information, and on the basis of the embodiment, as shown in fig. 5, the S102 includes:

s201, selecting a target reference signal from the one or more reference signals according to the measurement result corresponding to the one or more reference signals, and determining a Preamble corresponding to the target reference signal as a target Preamble.

After the terminal obtains the correspondence between the available Preamble and the available PRU, a target Preamble can be further determined, and the PRU corresponding to the Preamble can be determined. Specifically, the terminal may test each Reference Signal indicated by the network device, obtain Reference Signal Received Power (RSRP) corresponding to each parameter Signal, and select a target SSB index or a target CSI-RS index that is greater than the RSPR threshold according to the RSPR threshold indicated by the network device.

S202, determining a target PRU corresponding to the target Preamble based on the corresponding relation.

After determining the target SSB index, the terminal may determine, according to the mapping relationship between the candidate reference signal indicated by the network device and the Preamble, that the Preamble corresponding to the target SSB index is the target Preamble. Further, the terminal may determine an RO corresponding to the target SSB index and a target PRACH resource corresponding to the RO.

S203, sending a first message of random access through the target PRU.

The terminal can send a first message MSGA of random access through the target PRU and the target PRACH resource. The MSGA comprises a target Preamble and load information, and the terminal can send the load information through the target PRU and send the target Preamble through the target PRACH.

It should be noted that, when the terminal selects a target reference signal from one or more reference signals according to the measurement result corresponding to the candidate reference signal, if none of the candidate reference signals indicated by the network device can satisfy the condition of being greater than the RSPR threshold, the terminal may initiate two CBRAs, and determine, by monitoring the available SSB of the network device, which location PRACH resources to initiate random access. The network device may further indicate, to the terminal, a second mapping relationship between the reference signal and the Preamble when the CBRA is initiated. In the second mapping relationship, one reference signal may map multiple preambles, and after the terminal determines the SSB by monitoring, the terminal further selects one of the multiple preambles corresponding to the SSB according to the second mapping relationship and sends the selected Preamble to the network device. For the same reference signal, the corresponding Preamble in the mapping relationship of the CFRA is different from the corresponding Preamble in the second mapping relationship of the CBRA. For example, a SSB may correspond to 64 preambles in total, wherein Preamble #1-Preamble-31 may be used for CBRA, preamble #32-Preamble #63 may be used for CFRA, etc.

In order to realize the coexistence of the 4-step random access and the 2-step random access, the mapping relationship between the SSB and the preambles stored in the network device may further include a plurality of preambles corresponding to the 4-step CBRA. The mapping relationship stored in the network device may have two forms:

in the first form, when 4-step random access and 2-step random access share PRACH resources, the preambles mapped by 4-step CBRA and 2-step CBRA are different. The mapping relationship stored in the network device simultaneously includes a plurality of preambles when the SSB is used for the 4-step CBRA, a plurality of preambles when the SSB is used for the 2-step CBRA, and a plurality of preambles when the SSB is used for the CFRA, as shown in fig. 6.

In the second form, when the PRACH resource is not shared by the 4-step random access and the 2-step random access, the preambles mapped by the 4-step CBRA and the 2-step CBRA may be the same or different. The network device can store two mapping relations at the same time, wherein one mapping relation is the mapping relation under 4-step random access, and comprises a plurality of preambles when the SSB is used for 4-step CBRA and a plurality of preambles when the SSB is used for CFRA; the second is a mapping relationship under 2-step random access, which includes multiple preambles when the SSB is used for 2-step CBRA and multiple preambles when the SSB is used for CFRA, as shown in fig. 7. After selecting a mode from the 4-step random access and the 2-step random access, the network device selects a corresponding mapping relation and sends the mapping relation to the terminal, and indicates one of the preambles corresponding to the SSB for the CFRA.

According to the random access method, the terminal selects one target reference signal from the one or more reference signals according to the measurement result corresponding to the one or more reference signals, so that the target reference signal selected by the terminal can meet the requirement of random access, and the reliability of random access initiated by the terminal is improved.

Fig. 8 is a flow chart of a random access method in one embodiment. The random access method in this embodiment is described by taking the network device in fig. 1 as an example. As shown in fig. 8, the random access method includes the following steps:

s301, resource configuration information is indicated to the terminal, and the resource configuration information is used for indicating information of physical uplink shared control channel (PUSCH) resources corresponding to the non-competitive random access (CFRA).

S302, receiving the random access initiated by the terminal on the PUSCH resource indicated by the resource configuration information.

In one embodiment, the resource configuration information is further used to indicate PUSCH resources corresponding to the contention random access CBRA.

In one embodiment, the first configuration information is further used to indicate PUSCH resources corresponding to CBRA.

In one embodiment, the types of configuration parameters include: at least one of a modulation mode, a time-frequency resource starting position, the number of occupied Resource Blocks (RB), the number of continuous symbols and demodulation reference signal (DMRS) information.

In one embodiment, in the first configuration information and the second configuration information, a value of at least one type of configuration parameter is different.

In one embodiment, the transmittable data size TB size corresponding to the first configuration information is the same as the TB size corresponding to the second configuration information.

In one embodiment, the indicating resource configuration information to the terminal includes: transmitting a Radio Resource Control (RRC) message to a terminal through original network equipment; the RRC message includes a partial bandwidth BWP and resource configuration information.

In one embodiment, the RRC message further includes an indication parameter for indicating the physical random access channel PRACH resource and the Preamble sequence Preamble, and an offset between the PRACH resource access occasion RO and the PUSCH resource occasion PO.

In one embodiment, the indicating parameters include: one or more reference signals corresponding to the CFRA, and a mapping relationship between the one or more reference signals and the one or more preambles.

The implementation principle and technical effect of the random access method are similar to those in the embodiment of the terminal side, and are not described herein again.

In one embodiment, as shown in fig. 9, the interaction process between the terminal and the network device is as follows:

s401, the network equipment indicates resource configuration information to the terminal;

s402, the terminal receives resource configuration information indicated by the network equipment;

s403, the terminal carries out random access on the PUSCH resource indicated by the resource configuration information;

s404, the network equipment receives the random access initiated on the PUSCH resource indicated by the resource configuration information through the terminal.

The implementation principle and technical effect of the random access method are similar to those in the above embodiments, and are not described herein again.

It should be understood that although the various steps in the flow diagrams of fig. 2-9 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 2-9 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performing the sub-steps or stages is not necessarily sequential, but may be performed alternately or alternatingly with other steps or at least some of the sub-steps or stages of other steps.

In one embodiment, a random access apparatus is provided, as shown in fig. 10, the random access apparatus includes a receiving module 110 and an access module 120:

a receiving module 110, configured to receive resource configuration information indicated by a network device, where the resource configuration information is used to indicate a physical uplink shared control channel, PUSCH, resource corresponding to a non-contention random access CFRA;

an access module 120, configured to perform random access on the PUSCH resource indicated by the resource configuration information.

The implementation principle and technical effect of the random access apparatus provided in the foregoing embodiments are similar to those of the foregoing method embodiments, and are not described herein again.

In an embodiment, on the basis of the above embodiments, the resource configuration information is further used to indicate PUSCH resources corresponding to the contention random access CBRA.

In one embodiment, on the basis of the above embodiment, the resource configuration information includes first configuration information and second configuration information; the first configuration information is used for indicating PUSCH resources corresponding to the CFRA; the second configuration information is used for indicating PUSCH resources corresponding to the CBRA.

In one embodiment, on the basis of the above embodiments, the first configuration information is further used for indicating PUSCH resources corresponding to CBRA.

In an embodiment, on the basis of the above embodiment, the resource configuration information further includes third configuration information; the third configuration information is used for indicating PUSCH resources corresponding to the CBRA.

In one embodiment, on the basis of the above embodiment, the first configuration information and the second configuration information contain one or more configuration parameters; the first configuration information and the second configuration information contain the same type of configuration parameters.

In one embodiment, on the basis of the above embodiment, the types of configuration parameters include: at least one of a modulation mode, a time-frequency resource starting position, the number of occupied Resource Blocks (RB), the number of continuous symbols and demodulation reference signal (DMRS) information.

In an embodiment, on the basis of the foregoing embodiment, in the first configuration information and the second configuration information, a value of at least one type of configuration parameter is different.

In one embodiment, on the basis of the above embodiment, the transmittable data size TB size corresponding to the first configuration information is the same as the TB size corresponding to the second configuration information.

In one embodiment, the TB size is determined by one or more types of configuration parameters in the configuration information on the basis of the above-described embodiments.

In an embodiment, on the basis of the foregoing embodiment, the receiving module 110 is specifically configured to: receiving a Radio Resource Control (RRC) message transmitted by target network equipment through original network equipment; the RRC message includes a partial bandwidth BWP and resource configuration information.

In one embodiment, on the basis of the above embodiments, the RRC message further includes an indication parameter for indicating the physical random access channel PRACH resource and the Preamble sequence Preamble, and an offset between the PRACH resource access occasion RO and the PUSCH resource occasion PO.

In one embodiment, on the basis of the above embodiment, the indicating parameter includes: one or more reference signals corresponding to the CFRA, and a mapping relationship between the one or more reference signals and the one or more preambles.

In an embodiment, on the basis of the above-described embodiments, the one or more reference signals comprise one or more synchronization signal blocks SSB and/or one or more channel state information reference signals CSI-RS.

In an embodiment, on the basis of the above embodiment, as shown in fig. 11, the apparatus further includes a creating module 130, configured to: determining available PRACH resources from one or more reference signals; determining an available PUSCH Resource Unit (PRU) according to the available PRACH resource, the offset and the resource configuration information; determining available preambles for the CFRA according to the one or more reference signals; and establishing a corresponding relation between the available Preamble and the available PRUs according to the mapping ratio between the number of the available Preamble and the number of the available PRUs.

In an embodiment, on the basis of the above embodiment, as shown in fig. 12, the access module 120 includes:

a selecting unit 121, configured to select a target reference signal from the one or more reference signals according to a measurement result corresponding to the one or more reference signals, and determine a Preamble corresponding to the target reference signal as a target Preamble;

a determining unit 122, configured to determine, based on the correspondence, a target PRU corresponding to the target Preamble;

a sending unit 123, configured to send a first message of random access through the target PRU.

In one embodiment, a random access apparatus is provided, as shown in fig. 13, the random access apparatus includes a sending module 210 and a receiving module 220:

a sending module 210, configured to indicate resource configuration information to a terminal, where the resource configuration information is used for information of a physical uplink shared control channel, PUSCH, resource corresponding to a non-contention random access CFRA;

a receiving module 220, configured to receive a random access initiated by the terminal on the PUSCH resource indicated by the resource configuration information.

In one embodiment, the first configuration information is also used to indicate PUSCH resources corresponding to CBRA.

In an embodiment, the sending module 210 is specifically configured to: transmitting a Radio Resource Control (RRC) message to a terminal through original network equipment; the RRC message includes the partial bandwidth BWP and resource configuration information.

The division of the modules in the random access apparatus is only for illustration, and in other embodiments, the random access apparatus may be divided into different modules as needed to complete all or part of the functions of the random access apparatus.

For specific limitations of the random access device, reference may be made to the above limitations of the random access method, which is not described herein again. The modules in the random access apparatus may be implemented in whole or in part by software, hardware, and a combination thereof. The modules can be embedded in a hardware form or independent of a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.

Fig. 14 is a schematic internal structure diagram of a network device according to an embodiment. The network device includes a processor, a non-volatile storage medium, an internal memory, and a network interface connected by a system bus. Wherein, the processor is used for providing calculation and control capability and supporting the operation of the whole electronic equipment. The memory is used for storing data, programs and the like, and the memory stores at least one computer program which can be executed by the processor to realize the wireless network communication method suitable for the network device provided by the embodiment of the application. The memory may include a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The computer program can be executed by a processor for implementing a random access method provided in the following embodiments. The internal memory provides a cached execution environment for the operating system computer programs in the non-volatile storage medium. The network interface may be an ethernet card or a wireless network card, etc. for communicating with an external electronic device. Those skilled in the art will appreciate that the architecture shown in fig. 14 is a block diagram of only a portion of the architecture associated with the subject application, and does not constitute a limitation on the network devices to which the subject application applies, as a particular network device may include more or less components than those shown, or combine certain components, or have a different arrangement of components.

Fig. 15 is a schematic internal configuration diagram of the terminal in one embodiment. The terminal comprises a processor, a memory, a network interface, a display screen and an input device which are connected through a system bus. Wherein the processor of the terminal is configured to provide computing and control capabilities. The memory of the terminal comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the terminal is used for connecting and communicating with an external terminal through a network. The computer program is executed by a processor to implement a random access method. The display screen of the terminal can be a liquid crystal display screen or an electronic ink display screen, and the input device of the terminal can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on a shell of the terminal, an external keyboard, a touch pad or a mouse and the like.

It will be understood by those skilled in the art that the structure shown in fig. 14 or fig. 15 is only a block diagram of a part of the structure related to the present application, and does not constitute a limitation to the network device or terminal to which the present application is applied, and a specific network device or terminal may include more or less components than those shown in the figure, or combine some components, or have different arrangements of components.

The implementation of each module in the network device apparatus provided in the embodiments of the present application may be in the form of a computer program. The computer program may be run on a terminal or a server. The program modules constituted by the computer program may be stored on the memory of the terminal or the server. Which when executed by a processor, performs the steps of the method described in the embodiments of the present application.

In one embodiment, a network device is provided, as shown in fig. 14, comprising a transmitter and a receiver:

In one embodiment, there is provided a terminal, an internal structure of which may be as shown in fig. 15, including a receiver and a transmitter:

the system comprises a receiver and a network device, wherein the receiver is used for receiving resource configuration information indicated by the network device, and the resource configuration information is used for indicating physical uplink shared control channel (PUSCH) resources corresponding to non-competitive random access (CFRA);

the transmitter is used for cooperating with the receiver and performing random access on the PUSCH resource indicated by the resource configuration information.

The implementation principle and technical effect of the network device and the terminal provided by the above embodiments are similar to those of the above method embodiments, and are not described herein again.

The embodiment of the application also provides a computer readable storage medium. One or more non-transitory computer-readable storage media containing computer-executable instructions that, when executed by one or more processors, cause the processors to perform steps of a random access method, comprising:

The implementation principle and technical effect of the computer-readable storage medium provided by the above embodiments are similar to those of the above method embodiments, and are not described herein again.

A computer program product comprising instructions which, when run on a computer, cause the computer to perform a random access method.

Any reference to memory, storage, database or other medium used herein may include non-volatile and/or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM), which acts as external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link (SLDRAM), rambus (Rambus) direct RAM (RDRAM), direct bused dynamic RAM (DRDRAM), and Rambus Dynamic RAM (RDRAM).

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

A random access method, comprising:

receiving resource configuration information indicated by network equipment, wherein the resource configuration information is used for indicating physical uplink shared control channel (PUSCH) resources corresponding to non-competitive random access (CFRA);

and carrying out random access on the PUSCH resource indicated by the resource configuration information.
The random access method of claim 1, wherein the resource configuration information is further used for indicating PUSCH resources corresponding to a contention random access (CBRA).
The random access method according to claim 2, wherein the resource configuration information comprises first configuration information and second configuration information; the first configuration information is used for indicating PUSCH resources corresponding to the CFRA; the second configuration information is used for indicating PUSCH resources corresponding to the CBRA.
The random access method of claim 3, wherein the first configuration information is further used for indicating PUSCH resources corresponding to CBRA.
The random access method according to claim 3, wherein the resource configuration information further includes third configuration information; the third configuration information is used for indicating PUSCH resources corresponding to the CBRA.
The random access method according to any of claims 3-5, wherein the first configuration information and the second configuration information comprise one or more configuration parameters; the first configuration information and the second configuration information comprise the same type of configuration parameters.
The random access method of claim 6, wherein the type of the configuration parameter comprises: at least one of a modulation mode, a time-frequency resource starting position, the number of occupied Resource Blocks (RB), the number of continuous symbols and demodulation reference signal (DMRS) information.
The random access method according to claim 6 or 7, wherein at least one type of configuration parameter in the first configuration information and the second configuration information has a different value.
The random access method according to any of claims 3-8, wherein the transmittable data size, TB size, corresponding to the first configuration information is the same as the TB size corresponding to the second configuration information.
The random access method of claim 9, wherein the TB size is determined by one or more types of configuration parameters in configuration information.
The random access method according to any of claims 1-10, wherein the receiving the resource configuration information indicated by the network device comprises:

receiving a Radio Resource Control (RRC) message transmitted by target network equipment through original network equipment; the RRC message includes a partial bandwidth BWP and the resource configuration information.
The random access method of claim 11, wherein the RRC message further includes an indication parameter indicating a physical random access channel, PRACH, resource and a Preamble sequence, and an offset between a PRACH resource access occasion RO and a PUSCH resource occasion PO.
The random access method of claim 12, wherein the indication parameter comprises: one or more reference signals corresponding to the CFRA, and a mapping relationship between the one or more reference signals and one or more preambles.
The random access method according to claim 13, wherein the one or more reference signals comprise one or more synchronization signal blocks, SSBs, and/or one or more channel state information reference signals, CSI-RS.
The random access method according to any of claims 12-14, wherein, before performing random access on the PUSCH resource indicated by the resource configuration information, the method further comprises:

determining available PRACH resources according to the one or more reference signals;

determining an available PUSCH Resource Unit (PRU) according to the available PRACH resource, the offset and the resource configuration information;

determining available preambles for the CFRA according to the one or more reference signals;

and establishing a corresponding relation between the available Preamble and the available PRUs according to the mapping ratio between the number of the available Preamble and the number of the available PRUs.
The random access method according to claim 15, wherein the performing random access on the PUSCH resource indicated by the resource configuration information comprises:

selecting a target reference signal from the one or more reference signals according to the measurement result corresponding to the one or more reference signals, and determining a Preamble corresponding to the target reference signal as a target Preamble;

determining a target PRU corresponding to the target Preamble based on the corresponding relation;

sending a first message of random access by the target PRU.
A random access method, comprising:

indicating resource configuration information to a terminal, wherein the resource configuration information is used for indicating information of physical uplink shared control channel (PUSCH) resources corresponding to non-competitive random access (CFRA);

and receiving the random access initiated by the terminal on the PUSCH resource indicated by the resource configuration information.
The random access method of claim 17, wherein the resource configuration information is further used to indicate PUSCH resources for contention random access CBRA.
The random access method according to claim 18, wherein the resource configuration information includes first configuration information and second configuration information; the first configuration information is used for indicating PUSCH resources corresponding to the CFRA; the second configuration information is used for indicating PUSCH resources corresponding to the CBRA.
The random access method of claim 19, wherein the first configuration information is further used for indicating PUSCH resources corresponding to CBRA.
The random access method of claim 20, wherein the resource configuration information further includes third configuration information; the third configuration information is used for indicating PUSCH resources corresponding to the CBRA.
The random access method according to any of claims 19-21, wherein the first configuration information and the second configuration information comprise one or more configuration parameters; the first configuration information and the second configuration information comprise the same type of configuration parameters.
The random access method of claim 22, wherein the type of the configuration parameter comprises: at least one of a modulation mode, a time-frequency resource starting position, the number of occupied Resource Blocks (RB), the number of continuous symbols and demodulation reference signal (DMRS) information.
The random access method according to claim 22 or 23, wherein at least one type of configuration parameter in the first configuration information and the second configuration information has a different value.
The random access method according to any of claims 19-24, wherein the transmittable data size, TB size, corresponding to the first configuration information is the same as the TB size corresponding to the second configuration information.
The random access method of claim 25, wherein the TB size is determined by one or more types of configuration parameters in configuration information.
The random access method according to any of claims 17-26, wherein the indicating resource configuration information to the terminal comprises:

transparently transmitting a Radio Resource Control (RRC) message to the terminal through original network equipment; the RRC message includes a partial bandwidth BWP and the resource configuration information.
The random access method of claim 27, wherein the RRC message further includes an indication parameter indicating a physical random access channel, PRACH, resource and a Preamble sequence, and an offset between a PRACH resource access occasion RO and a PUSCH resource occasion PO.
The random access method of claim 28, wherein the indication parameter comprises: one or more reference signals corresponding to the CFRA, and a mapping relation between the one or more reference signals and one or more preambles.
The random access method of claim 29, wherein the one or more reference signals comprise one or more Synchronization Signal Blocks (SSBs) and/or one or more channel state information reference signals (CSI-RSs).
A random access apparatus, comprising a receiving module and an access module:

a receiving module, configured to receive resource configuration information indicated by a network device, where the resource configuration information is used to indicate a physical uplink shared control channel, PUSCH, resource corresponding to a non-contention random access CFRA;

and the access module is used for carrying out random access on the PUSCH resource indicated by the resource configuration information.
A random access apparatus, comprising a sending module and a receiving module:

a sending module, configured to indicate resource configuration information to a terminal, where the resource configuration information is used to indicate information of a physical uplink shared control channel (PUSCH) resource corresponding to a non-contention random access (CFRA);

and the receiving module is used for receiving the random access initiated on the PUSCH resource indicated by the resource configuration information by the terminal.
A terminal, characterized in that it comprises a receiver and a transmitter:

the receiver is configured to receive resource configuration information indicated by a network device, where the resource configuration information is used to indicate a physical uplink shared control channel (PUSCH) resource corresponding to a non-contention random access (CFRA);

the transmitter is configured to perform random access on the PUSCH resource indicated by the resource configuration information in cooperation with the receiver.
A network device, comprising a transmitter and a receiver:

the transmitter is configured to indicate resource configuration information to a terminal, where the resource configuration information is used to indicate information of a physical uplink shared control channel (PUSCH) resource corresponding to a non-contention random access (CFRA);

and the receiver is configured to receive the random access initiated by the terminal on the PUSCH resource indicated by the resource configuration information.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 16.
A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of claims 17 to 30.