CN110300455B

CN110300455B - Random access resource indication, random access method, base station, terminal and device

Info

Publication number: CN110300455B
Application number: CN201810245238.9A
Authority: CN
Inventors: 谌丽
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2018-03-23
Filing date: 2018-03-23
Publication date: 2022-01-25
Anticipated expiration: 2038-03-23
Also published as: CN110300455A

Abstract

The invention provides a random access resource indication method, a random access method, a base station, a terminal and a device, wherein the method comprises the following steps: sending random access resource allocation information containing a resource mapping indication field to a terminal, wherein the resource mapping indication field is used for indicating the position of a special random access resource allocated to the terminal in at least one random access resource configuration; wherein the random access resource configuration comprises at least one of: the method comprises the steps of random access resource configuration based on BWP dimension, random access resource configuration based on beam direction dimension, random access resource configuration based on uplink carrier dimension and random access resource configuration based on cell dimension; the resource mapping indication domain in the embodiment of the invention can indicate the positions of the special random access resources allocated to the terminal in a plurality of random access resource configurations, thereby realizing the purpose that the base station can simultaneously allocate non-competitive random access resources for different beams or different carriers or different BWPs or different cells.

Description

Random access resource indication, random access method, base station, terminal and device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a random access resource indicator, a random access method, a base station, a terminal, and an apparatus.

Background

Random access of LTE (long term evolution) systems is used for five purposes: the terminal is initially accessed; RRC (Radio Resource Control) connection reestablishment; switching; downlink data arrives in an RRC connected state in an asynchronous state; uplink data arrives in the RRC connected state; positioning in RRC connected state. The NR (new air interface) system also introduces system message request (SI request), idle terminal Recovery connection, Beam Failure Recovery (BFR), and the like.

The random access process is divided into two types, namely competitive random access and non-competitive random access. The process is as follows:

the contention random access procedure is shown in fig. 1 and mainly includes four steps:

message 1(Msg 1): the terminal selects a Random Access code preamble and a Random Access resource PRACH (Physical Random Access Channel), and transmits the selected Random Access code preamble to the base station on the selected PRACH resource. In the NR, specific preamble and/or PRACH resources are reserved for the Msg1based system message request "Msg 1based SI request".

Message 2(Msg 2): the base station receives the random access request Msg1, and sends a random access response to the terminal, wherein the random access response includes an uplink timing advance, an uplink resource UL grant allocated for (message 3) Msg3, and a Temporary C-RNTI (Cell Radio Network Temporary Identifier) allocated by the Network side. A Physical Downlink Control Channel (PDCCH) carrying the Msg2 scheduling message is scrambled by using an RA-RNTI (resource block used for indicating that a user sends a random access preamble), the Msg2 also carries a preamble ID, and the terminal determines that the Msg2 corresponds to the Msg1 sent by the terminal through the RA-RNTI and the preamble ID. In the NR, for a system message request based on Msg1, Msg2 includes only preamble ID information corresponding to Msg1, and nothing else. And for the system message request scene based on Msg1, the random access process to Msg2 is finished, that is, if the preamble ID corresponding to the preamble sent by Msg1 is contained in the received Msg2, the system message request process based on Msg1 is considered to be completed.

Message 3(Msg 3): and the terminal sends uplink transmission on the UL grant specified by the Msg2, the content of the uplink transmission is different for different random access reasons Msg3, such as initial access, and the Msg3 transmits an RRC connection establishment request.

Message 4(Msg 4): and the terminal can judge whether the random access is successful according to the Msg 4. For the initial access terminal, after the competition resolving is successful, the temporary C-RNTI is automatically converted into the unique terminal identifier C-RNTI of the terminal in the cell.

The non-contention random access process is shown in fig. 2 and mainly includes three steps:

message 0(Msg 0): and the base station allocates a special preamble for non-competitive random access and a PRACH resource used by random access to the terminal. The non-contention random access dedicated resource is allocated by RRC signaling (e.g., when handover or SCG (Secondary Cell Group) addition) or physical layer signaling PDCCH.

Message 1(Msg 1): and the terminal sends a specified special preamble to the base station on the specified PRACH resource according to the indication of the Msg 0. And after receiving the Msg1, the base station calculates an uplink timing advance TA according to the Msg 1.

Message 2(Msg 2): and the base station sends a random access response to the terminal, wherein the random access response comprises timing advance information and a subsequent uplink transmission resource allocation (UL grant), and the timing advance is used for the timing relation of the subsequent uplink transmission of the terminal.

The NR system introduces beam management, and when a terminal initiates random access, it needs to select a reasonable random access resource according to the channel condition. Several typical situations are for example: 1) when one cell comprises a downlink carrier and two Uplink carriers (UL and SUL, Uplink and supplementary Uplink), the terminal selects UL to initiate random access if the quality of a downlink channel is higher than a threshold, and selects SUL to initiate random access if the quality of the channel is lower than the threshold according to the measurement of the downlink carrier; 2) beam selection (also called sync signal block SS block/channel state information reference signal CSI-RS selection): if the terminal is distributed with non-competitive random access resources, measuring the channel quality of SS block or CSI-RS in the downlink direction corresponding to the resources, selecting physical layer random access resources (PRACH) corresponding to the SS block or CSI-RS larger than a threshold to initiate random access, if the non-competitive random access resources meeting the threshold condition do not exist, measuring other SS blocks or CSI-RSs, and selecting PRACH corresponding to the SS block/CSI-RS meeting the threshold condition of the channel quality to initiate competitive random access; 3) recovery of beam failure BFR: and the base station allocates non-competitive random access resources to the terminal by using RRC signaling to initiate random access, measures other SS block/CSI-RS if the non-competitive random access resources which meet the channel threshold condition do not exist, and selects PRACH resources corresponding to the SS block/CSI-RS which meet the channel quality threshold condition to initiate competitive random access.

In a new generation wireless communication system (NR system, 5G system), a plurality of resource dimensions are introduced, including within one cell carrier, and a plurality of partial bandwidths bwp (bandwidth part) are configured for a terminal; in a cell, there may be two uplink carriers UL and SUL; under the CA, a terminal may simultaneously operate in a cell formed by multiple component carriers. With the introduction of multiple uplink carriers and beam management in a cell, when a base station allocates non-contention random access resources to a terminal, it needs to consider that random access resources are respectively allocated to the terminal in different beam directions or on different uplink carriers. The prior art cannot simultaneously allocate non-contention random access resources to a terminal on different uplink carriers or different beams. For example, when a non-contention random access resource is allocated by using a PDCCH order, only one PRACH resource can be allocated at a time, the next PDCCH order is regarded as a new non-contention random access resource allocation, and the previously allocated PRACH resource is invalid, so that it is impossible to allocate the non-contention random access resource on different beams or different carriers at the same time based on the prior art.

Disclosure of Invention

The invention aims to provide a random access resource indication method, a random access method, a base station, a terminal and a device, and aims to solve the problem that the base station cannot simultaneously allocate non-competitive random access resources for different beams or different carriers in the prior art.

In order to solve the above problem, an embodiment of the present invention provides a method for indicating a random access resource, including:

sending random access resource allocation information containing a resource mapping indication field to a terminal, wherein the resource mapping indication field is used for indicating the position of a special random access resource allocated to the terminal in at least one random access resource configuration;

wherein the random access resource configuration comprises at least one of:

random access resource configuration based on a partial bandwidth BWP dimension, random access resource configuration based on a beam direction dimension, random access resource configuration based on an uplink carrier dimension, and random access resource configuration based on a cell dimension.

Wherein, the step of sending the random access resource allocation information containing the resource mapping indication domain to the terminal comprises:

and sending random access resource allocation information to the terminal through Radio Resource Control (RRC) signaling, wherein the random access resource allocation information comprises the resource mapping indication domain.

Wherein the random access resource allocation information further comprises: at least one of a BWP indication field, an uplink carrier indication field, a beam indication field, and a cell indication field;

wherein the BWP indication field is used for indicating the BWP applicable to the resource mapping indication field; the uplink carrier indication domain is used for indicating the uplink carrier applicable to the resource mapping indication domain; the beam indication field is used for indicating the beam applicable to the resource mapping indication field; the cell indication field is used for indicating the cell to which the resource mapping indication field is applicable.

and sending random access resource allocation information to a terminal through a system message of a broadcast cell, wherein the random access resource allocation information comprises the resource mapping indication domain.

Wherein the random access resource allocation information further comprises: an uplink carrier indication domain and/or a beam indication domain;

wherein, the uplink carrier indication domain is used for indicating the uplink carrier applicable to the resource mapping indication domain; the beam indication field is used for indicating the beam applicable to the resource mapping indication field.

and sending random access resource allocation information to a terminal through a physical layer signaling carried by a physical layer downlink control channel (PDCCH), wherein the random access resource allocation information comprises the resource mapping indication domain.

Wherein the random access resource allocation information further comprises:

a validation indication field for indicating whether the target indication field is valid; wherein the target indication field comprises: at least one of the BWP indication field, the uplink carrier indication field, the beam indication field, and the cell indication field.

The embodiment of the invention also provides a random access method, which comprises the following steps:

receiving random access resource allocation information which is sent by a base station and contains a resource mapping indication domain, wherein the resource mapping indication domain is used for indicating the position of a special random access resource allocated to a terminal in at least one random access resource allocation;

wherein the random access resource configuration comprises at least one of: random access resource configuration based on a part of bandwidth BWP dimension, random access resource configuration based on a beam direction dimension, random access resource configuration based on an uplink carrier dimension and random access resource configuration based on a cell dimension;

and selecting the special random access resource allocated to the terminal from the random access resource configuration according to the indication of the resource mapping indication domain, and initiating a random access process.

Wherein, the step of receiving the random access resource allocation information containing the resource mapping indication domain sent by the base station includes:

and receiving random access resource allocation information sent to a terminal by a base station through Radio Resource Control (RRC) signaling, wherein the random access resource allocation information comprises the resource mapping indication domain.

and receiving random access resource allocation information sent to a terminal by a base station through a system message of a broadcast cell, wherein the random access resource allocation information comprises the resource mapping indication domain.

and receiving random access resource allocation information sent to a terminal by a base station through a physical layer signaling carried by a physical layer downlink control channel (PDCCH), wherein the random access resource allocation information comprises the resource mapping indication domain.

Wherein the random access resource allocation information further comprises:

An embodiment of the present invention further provides a base station, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; wherein the processor is configured to read a program in the memory and control the transceiver to send random access resource allocation information to the terminal, the random access resource allocation information including a resource mapping indication field, the resource mapping indication field indicating a location of a dedicated random access resource allocated to the terminal in at least one random access resource configuration;

wherein the random access resource configuration comprises at least one of:

Wherein the transceiver is further configured to:

Wherein the random access resource allocation information further comprises:

The embodiment of the present invention further provides a device for indicating random access resources, including:

an allocation sending module, configured to send random access resource allocation information including a resource mapping indication field to a terminal, where the resource mapping indication field is used to indicate a location of a dedicated random access resource allocated to the terminal in at least one random access resource allocation;

wherein the random access resource configuration comprises at least one of:

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the resource indication method described above are implemented.

An embodiment of the present invention further provides a terminal, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; the transceiver is used for receiving random access resource allocation information which is sent by a base station and contains a resource mapping indication domain, and the resource mapping indication domain is used for indicating the position of a special random access resource allocated to a terminal in at least one random access resource allocation;

the processor is used for reading the program in the memory and executing the following processes: and selecting the special random access resource allocated to the terminal from the random access resource configuration according to the indication of the resource mapping indication domain, and initiating a random access process.

Wherein the transceiver is further configured to:

Wherein the random access resource allocation information further comprises:

An embodiment of the present invention further provides a random access apparatus, including:

a receiving module, configured to receive random access resource allocation information including a resource mapping indication field sent by a base station, where the resource mapping indication field is used to indicate a location of a dedicated random access resource allocated to a terminal in at least one random access resource allocation;

and the access module is used for selecting the special random access resource distributed to the terminal from the random access resource configuration according to the indication of the resource mapping indication domain and initiating a random access process.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the random access method are implemented as described above.

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

in the random access resource indication, the random access method, the base station, the terminal and the device of the embodiment of the invention, the base station carries the resource mapping indication domain in the random access resource allocation information sent to the terminal, and the terminal can determine the specific special random access resource allocated to the terminal by the base station according to the resource mapping indication domain indication and the random access resource allocation respectively configured based on each dimensionality, thereby initiating the random access process; the resource mapping indication domain can indicate the positions of the dedicated random access resources allocated to the terminal in a plurality of random access resource configurations, so that the aim that the base station can simultaneously allocate non-competitive random access resources for different beams or different carriers or different BWPs or different cells is fulfilled.

Drawings

Fig. 1 is a diagram illustrating a contention random access procedure in the prior art;

fig. 2 is a diagram illustrating a non-contention random access procedure in the prior art;

FIG. 3 is a flowchart illustrating steps of a resource indication method according to an embodiment of the present invention;

fig. 4 is a flowchart illustrating steps of a random access method according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a base station and a terminal according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a resource indicating apparatus according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a random access apparatus according to an embodiment of the present invention.

Detailed Description

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

As shown in fig. 1, an embodiment of the present invention provides a method for indicating a random access resource, including:

step 301, sending random access resource allocation information containing a resource mapping indication field to a terminal, wherein the resource mapping indication field is used for indicating the position of a dedicated random access resource allocated to the terminal in at least one random access resource allocation;

wherein the random access resource configuration comprises at least one of:

The random access resource configuration provided by the above embodiments of the present invention is based on multiple dimensions, and mainly includes four dimensions: BWP dimension, beam direction dimension, uplink carrier dimension, and cell dimension (in a carrier aggregation scenario). The resource mapping indication field may only indicate the position of a dedicated random access resource (the dedicated random access resource is a non-contention random access resource) allocated to the terminal in a random access resource configuration, in this case, the random access resource configuration is a random access resource configuration of any dimension; or, the resource mapping indication field may indicate a position of a dedicated random access resource allocated to the terminal in at least two random access resource configurations, in this case, the at least two random access resource configurations are generally multiple random access resource configurations in the same dimension.

For example, the resource mapping indication field is used to indicate the positions of dedicated random access resources allocated to the terminal in a first random access resource configuration (the first random access resource configuration is a random access resource configuration on beam 1) and a second random access resource configuration (the second random access resource configuration is a random access resource configuration on beam 2), and the directions of beam 1 and beam 2 are different. At this time, the base station simultaneously indicates the non-contention random access resources of different beams through the resource mapping indication domain.

Preferably, the base station configures a plurality of random access resource configurations for the terminal in advance through a system message or RRC dedicated signaling. Each BWP, each beam direction, each uplink carrier or each cell has independent random access resource configuration, so that one or more groups of non-contention random access resources corresponding to each BWP, each beam direction, each uplink carrier or each cell are obtained. It should be noted that, the pre-configured random access resource configuration is periodically valid, so the resource mapping indication field is specifically used for indicating the location of the dedicated random access resource allocated to the terminal in the period.

For example, if a cell includes one downlink carrier and two uplink carriers (i.e., an uplink carrier UL and an auxiliary uplink carrier SUL, respectively), the base station configures, for the terminal, the random access resource configuration information on the uplink carrier UL and the random access resource configuration information on the auxiliary uplink carrier SUL through a system message or RRC dedicated signaling. It should be noted that the random access resource configuration information on different uplink carriers may be the same or different, and is not specifically limited herein.

Preferably, in the above embodiment of the present invention, the relationship between the position indicated by the resource mapping indication field and the specific resource mapping indication field may be stored in the base station and the terminal in a form of a list, which is convenient for the base station and the terminal to search. For example, three mapping instances are shown in table 1.

TABLE 1

As shown in table 1, when the finger of the resource mapping indication field is "0", the dedicated random access resource allocated to the terminal is indicated as all non-contention random access resources in the corresponding random access resource configuration; when the indication of the resource mapping indication field is "1", indicating that the dedicated random access resource allocated to the terminal is the 0 th PRACH resource (the random access resource is specifically a physical random access channel PRACH resource) in the corresponding random access resource configuration, or indicating that the dedicated random access resource allocated to the terminal is the 0 th PRACH resource in the random access resource configuration of the uplink carrier UL and the 5 th PRACH resource in the random access resource configuration of the auxiliary uplink carrier SUL; the explanation of other values of the resource mapping indication field in the table is not detailed herein.

It should be noted that, in the above embodiments of the present invention, the random access resource allocation information including the resource mapping indication field may be sent through RRC signaling, may also be sent through PDCCH, and may also be sent through system message, and when the random access resource allocation information is sent in different manners, the corresponding structures and application scenarios are different, and the resource indication method is described in detail below with reference to different sending manners and application scenarios.

In a first aspect, when sending random access resource allocation information including a resource mapping indication field through RRC signaling, step 301 in the foregoing embodiment of the present invention includes:

The RRC signaling is specifically "RRC signaling for allocating non-contention random access to the terminal," and for example, the RRC signaling includes a handover command, a beam identification recovery BFR non-contention random access resource allocation command, and the like.

Further, the random access resource allocation information further includes: at least one of a BWP indication field, an uplink carrier indication field, a beam indication field, and a cell indication field;

the BWP indication field is used to indicate the BWP to which the resource mapping indication field applies, and may be a specific BWP ID, or a bitmap format to indicate which BWP or BWPs apply, or a special value to indicate that all BWPs apply. Preferably, in the above embodiment of the present invention, it may be predefined that if the random access resource allocation information does not include the BWP indication field, the resource mapping indication field is applicable to all BWPs.

The uplink carrier indication domain is used for indicating the uplink carrier applicable to the resource mapping indication domain, and can use 1bit to indicate that the resource mapping indication domain is applicable to the uplink carrier UL or the auxiliary uplink carrier SUL, or introduce a special value to indicate that the resource mapping indication domain is applicable to all uplink carriers; similarly, in the above embodiment of the present invention, it may be predefined that if the random access resource allocation information does not include the uplink carrier indication field, it indicates that the resource mapping indication field is applicable to all uplink carriers.

The beam Indication field is used for indicating a beam to which the resource mapping Indication field is applicable, and may be represented by TCI (Transmission Configuration Indication), SSB (Synchronization Signal Block), or CSI-RS (channel state information reference Signal), where these parameters may refer to their corresponding beams, thereby indicating the random access resource Configuration associated therewith; a special value can also be introduced to indicate that the resource mapping indication domain is applicable to all beam directions; also, in the above embodiments of the present invention, it may be predefined that if the random access resource allocation information does not include the beam indication field, it indicates that the resource mapping indication field is applicable to all beam directions.

The cell indication domain is used for indicating the cell to which the resource mapping indication domain is applicable, and the cell indication domain is applicable to a Carrier Aggregation (CA) scene; may be in the form of a cell index (index) indicating a particular cell, or a bitmap indicating which cell or cells apply, or a special value indicating that all cells apply; similarly, in the above embodiment of the present invention, it may be predefined that if the random access resource allocation information does not include the cell indication field, it indicates that the resource mapping indication field is applicable to all cells.

In the second aspect, when sending the random access resource allocation information including the resource mapping indication field through the cell broadcast system message, step 301 in the foregoing embodiment of the present invention includes:

In this case, the dedicated random access resource allocated to the terminal indicated by the resource mapping indication field is a random access resource reserved for a system message request (on demand SI).

Further, the random access resource allocation information further includes: an uplink carrier indication domain and/or a beam indication domain;

In a third aspect, when sending random access resource allocation information including a resource mapping indication field through a physical layer signaling carried by a PDCCH, step 301 in the foregoing embodiment of the present invention includes:

Specifically, a physical layer signaling of the PDCCH carries DCI (Downlink Control Indicator), where the DCI includes the random access resource allocation information.

Further, in the above embodiments of the present invention, the random access resource allocation information further includes:

a validation indication field for indicating whether the target indication field is valid; wherein the target indication field comprises: at least one of the BWP indication field, the uplink carrier indication field, the beam indication field, and the cell indication field. The validation indication field may occupy 1bit or more. If the valid indication field indicates that the target indication field is not valid, the resource mapping indication field is applicable to at least one of all BWPs, all uplink carriers, all beam directions, and the cell.

In summary, in the embodiments of the present invention, the base station carries the resource mapping indication field in the random access resource allocation information sent to the terminal, and the terminal can determine the specific dedicated random access resource allocated to the terminal by the base station according to the resource mapping indication field indication and the random access resource allocation configured based on each dimension, so as to initiate the random access process; the resource mapping indication domain can indicate the positions of the dedicated random access resources allocated to the terminal in a plurality of random access resource configurations, so that the aim that the base station can simultaneously allocate non-competitive random access resources for different beams or different carriers or different BWPs or different cells is fulfilled.

As shown in fig. 4, an embodiment of the present invention provides a random access method, including:

step 401, receiving random access resource allocation information including a resource mapping indication field sent by a base station, where the resource mapping indication field is used to indicate a position of a dedicated random access resource allocated to a terminal in at least one random access resource allocation;

step 402, according to the indication of the resource mapping indication domain, selecting the special random access resource allocated to the terminal from the random access resource configuration, and initiating the random access process.

In a first aspect, when sending random access resource allocation information including a resource mapping indication field through RRC signaling, step 401 in the foregoing embodiment of the present invention includes:

In the second aspect, when sending the random access resource allocation information including the resource mapping indication field through the cell broadcast system message, step 401 in the above embodiment of the present invention includes:

In a third aspect, when sending random access resource allocation information including a resource mapping indication field through a physical layer signaling carried by a PDCCH, step 401 in the foregoing embodiment of the present invention includes:

The validation indication field may occupy 1bit or more. If the valid indication field indicates that the target indication field is not valid, the resource mapping indication field is applicable to at least one of all BWPs, all uplink carriers, all beam directions, and the cell.

The operation of the base station and the terminal side is fully described below with reference to an example:

example one: for a scenario where a cell includes one downlink carrier and multiple uplink carriers, RRC signaling triggers random access. The plurality of uplink carriers include: an uplink carrier UL and an auxiliary uplink carrier SUL.

A base station side:

and step 11, the base station configures the random access resource configuration on a plurality of uplink carriers for the terminal through system messages or RRC dedicated signaling. Each uplink carrier has independent random access resource configuration, and the random access resource configuration of each uplink carrier corresponds to one random access resource set.

Step 12, the base station side allocates a non-contention random access resource to the terminal through an RRC dedicated signaling (for example, a handover command or an SCG (Secondary Cell Group) addition command, specifically, an RRC reconfiguration procedure, where the command is carried through an RRC reconfiguration message), that is, sends random access resource allocation information to the terminal through the RRC dedicated signaling, where the random access resource allocation information carries a resource mapping indication field and an uplink carrier indication field, and the uplink carrier indication field may indicate a specific carrier (that is, the resource mapping indication field is only applicable to the specific carrier); or not performing uplink carrier indication, which means that the resource mapping indication domain is applicable to all uplink carriers.

And step 13, the base station receives a random access request Msg1 initiated by the terminal on the special random access resource allocated to the terminal. If the special random access resources are distributed on a plurality of uplink carriers, monitoring the positions of the special random access resources corresponding to different uplink carriers, wherein the special random access resources are determined by the corresponding relation between a resource mapping indication domain and the random access resource configuration configured on each uplink carrier; the random access resource configurations allocated on different uplink carriers may be the same or different.

In step 14, the base station sends a random access response on the downlink carrier according to the received random access request Msg1, and if the random access response is a contention random access, the base station further performs a subsequent random access process (not described in detail herein).

A terminal side:

step 15, the terminal determines the random access resource configuration on multiple carriers by receiving system messages or receiving RRC dedicated signaling. Each uplink carrier has independent random access resource configuration, and each uplink carrier corresponds to a random access resource set by the random access resource configuration.

Step 16, the terminal receives an RRC signaling (for example, a handover command or an SCG addition command, etc.) sent by the base station side, where the RRC signaling carries a resource mapping indication domain and an uplink carrier indication domain, and determines, according to the resource mapping indication domain and the uplink carrier indication domain, a specific available random access resource corresponding to the resource mapping indication domain on the specified uplink carrier (i.e., determines a dedicated random access resource allocated by the base station to the terminal).

Step 17, if there is dedicated random access resource allocation on multiple uplink carriers, the terminal performs channel measurement on the downlink carriers (obtains reference signal received power, RSRP), compares the measurement result with a channel quality threshold, if the measurement result is higher than the threshold, initiates a random access request Msg1 using the random access resource on the conventional uplink carrier UL, and if the measurement result is lower than the threshold, initiates a random access request Msg1 using the random access resource on the auxiliary uplink carrier SUL;

step 17', if only one uplink carrier is allocated with dedicated random access resources, initiating uplink random access on the designated uplink carrier by using the designated random access resources; or, measuring the channel quality of the downlink carrier, selecting which uplink carrier to use according to the channel quality threshold, and if the uplink carrier meeting the channel quality threshold is not allocated with the special random access resource, initiating the competitive random access on the uplink carrier; (step 17 and step 17' depending on the content of the non-contention random access resource indication, only either one can occur).

And step 18, the terminal monitors and receives the Msg2, judges whether the random access is successful or not, and if the random access is competitive, the subsequent random access process is carried out.

Example two: for a scenario where a cell includes one downlink carrier and multiple uplink carriers, the PDCCH order triggers random access (e.g., downlink data arrival). The plurality of uplink carriers include: an uplink carrier UL and an auxiliary uplink carrier SUL.

A base station side:

step 21, the base station configures the random access resource configuration on a plurality of uplink carriers for the terminal through a system message or an RRC dedicated signaling. Each uplink carrier has independent random access resource configuration, and the random access resource configuration of each uplink carrier corresponds to one random access resource set.

Step 22, the base station side allocates non-contention random access resources to the terminal through the PDCCH order, that is, sends random access resource allocation information to the terminal through the PDCCH order, where the random access resource allocation information carries a resource mapping indication domain and an uplink carrier indication domain, and the uplink carrier indication domain can indicate a specific carrier (that is, the resource mapping indication domain is only applicable to the specific carrier); or not performing uplink carrier indication, which means that the resource mapping indication domain is applicable to all uplink carriers.

Step 23, the base station receives a random access request Msg1 initiated by the terminal on the dedicated random access resource allocated to the terminal. If the special random access resources are distributed on a plurality of uplink carriers, monitoring the positions of the special random access resources corresponding to different uplink carriers, wherein the special random access resources are determined by the corresponding relation between a resource mapping indication domain and the random access resource configuration configured on each uplink carrier; the random access resource configurations allocated on different uplink carriers may be the same or different.

In step 24, the base station sends a random access response on the downlink carrier according to the received random access request Msg1, and if the random access response is a contention random access, the base station further performs a subsequent random access process (not described in detail herein).

A terminal side:

step 25, the terminal determines the random access resource configuration on multiple carriers by receiving system messages or receiving RRC dedicated signaling. Each uplink carrier has independent random access resource configuration, and each uplink carrier corresponds to a random access resource set by the random access resource configuration.

Step 26, the terminal receives a PDCCH order sent by the base station side, where the PDCCH order carries a resource mapping indication domain and an uplink carrier indication domain, and determines a specific available random access resource corresponding to the resource mapping indication domain on an assigned uplink carrier (i.e. determines a dedicated random access resource allocated by the base station for the terminal) according to the resource mapping indication domain and the uplink carrier indication domain.

Step 27, if there is dedicated random access resource allocation on multiple uplink carriers, the terminal performs channel measurement on the downlink carriers (obtains reference signal received power, RSRP), compares the measurement result with a channel quality threshold, if the measurement result is higher than the threshold, initiates a random access request Msg1 using random access resources on a conventional uplink carrier UL, and if the measurement result is lower than the threshold, initiates a random access request Msg1 using random access resources on an auxiliary uplink carrier SUL;

step 27', if only one uplink carrier is allocated with dedicated random access resources, initiating uplink random access on the designated uplink carrier by using the designated random access resources; or, measuring the channel quality of the downlink carrier, selecting which uplink carrier to use according to the channel quality threshold, and if the uplink carrier meeting the channel quality threshold is not allocated with the special random access resource, initiating the competitive random access on the uplink carrier; (step 27 and step 27' depending on the content of the non-contention random access resource indication, only either one can occur).

And step 28, the terminal monitors and receives the Msg2, judges whether the random access is successful or not, and if the random access is competitive, the subsequent random access process is carried out.

Example three: for the beam selection scenario, RRC signaling triggers random access.

A base station side:

step 31, the base station configures the random access resource configuration on a plurality of beams for the terminal through a system message or an RRC dedicated signaling. Specifically, SSBs (Synchronization Signal blocks) in different downlink directions, CSI-RSs (channel state information reference signals) in different downlink directions, or TCIs (Transmission Configuration indicators) in different downlink directions correspond to different random access resource configurations, respectively. Each beam direction has independent random access resource configuration, and the random access resource configuration of each beam direction corresponds to one random access resource set.

Step 32, the base station side allocates a non-contention random access resource to the terminal through an RRC dedicated signaling (for example, a handover command or an SCG (Secondary Cell Group) addition command, specifically, an RRC reconfiguration procedure, where the command is carried through an RRC reconfiguration message), that is, sends random access resource allocation information to the terminal through the RRC dedicated signaling, where the random access resource allocation information carries a resource mapping indication field and a beam indication field, and the beam indication field may be a TCI state identifier (TCI state ID), an SSB index (SSB index), a CSI-RS resource set identifier (CSI-RS resource set ID), or a combination thereof. The beam indication field is used for indicating that the resource mapping indication field is particularly suitable for partial beams or all beams.

In step 33, the base station receives a random access request Msg1 initiated by the terminal on the dedicated random access resource allocated to the terminal. If the special random access resources are distributed in the directions of the beams, monitoring is carried out at random access resource positions corresponding to different SSB/CSI-RS, and the special random access resources are determined by a resource mapping indication domain and a mapping relation of random access resource configuration configured on each beam; the random access resource configurations allocated on different beams may be the same or different.

In step 34, the base station sends a random access response in the corresponding downlink beam direction according to the received random access request Msg1, and if the random access response is a contention random access, a subsequent random access process is performed (not described in detail herein).

A terminal side:

step 35, the terminal determines the random access resource configuration on the multiple beams by receiving a system message or receiving an RRC dedicated signaling. Each beam direction has independent random access resource configuration, and the random access resource configuration of each beam direction corresponds to one random access resource set.

Step 36, the terminal receives an RRC signaling (for example, a handover command or an SCG addition command, etc.) sent by the base station side, where the RRC signaling carries a resource mapping indication field and a beam indication field, and determines, according to the resource mapping indication field and the beam indication field, a specific available random access resource corresponding to the resource mapping indication field on an assigned beam (i.e., determines a dedicated random access resource allocated by the base station for the terminal).

And step 37, the terminal performs channel measurement on the SSB/CSI-RS in the downlink beam corresponding to the allocated dedicated random access resource (obtains Reference Signal Received Power (RSRP)), compares the measurement result with a channel quality threshold, selects a non-competitive random access resource corresponding to the SSB/CSI-RS above the threshold, initiates random access, and selects other SSB/CSI-RSs and random access resources corresponding to the SSB/CSI-RSs to initiate competitive random access according to a channel quality threshold criterion if the channel quality of the downlink beam corresponding to the allocated non-competitive random access resource is lower than the threshold.

And step 38, the terminal monitors and receives the Msg2, judges whether the random access is successful or not, and if the random access is competitive, the subsequent random access process is carried out.

Example four: for the beam selection scenario, the PDCCH triggers random access.

A base station side:

step 41, the base station configures the random access resource configuration on a plurality of beams for the terminal through a system message or an RRC dedicated signaling. Specifically, SSBs (Synchronization Signal blocks) in different downlink directions, CSI-RSs (channel state information reference signals) in different downlink directions, or TCIs (Transmission Configuration indicators) in different downlink directions correspond to different random access resource configurations, respectively. Each beam direction has independent random access resource configuration, and the random access resource configuration of each beam direction corresponds to one random access resource set.

Step 42, the base station side allocates non-contention random access resources to the terminal through the PDCCH order, that is, sends random access resource allocation information to the terminal through the PDCCH order, where the random access resource allocation information carries a resource mapping indication domain and a beam indication domain, and the beam indication domain may be a TCI state identifier (TCI state ID), an SSB index (SSB index), a CSI-RS resource set identifier (CSI-RS resource set ID), or a combination thereof. The beam indication field is used for indicating that the resource mapping indication field is particularly suitable for partial beams or all beams.

Step 43, the base station receives a random access request Msg1 initiated by the terminal on the dedicated random access resource allocated to the terminal. If the special random access resources are distributed in the directions of the beams, monitoring is carried out at random access resource positions corresponding to different SSB/CSI-RS, and the special random access resources are determined by a resource mapping indication domain and a mapping relation of random access resource configuration configured on each beam; the random access resource configurations allocated on different beams may be the same or different.

Step 44, the base station sends a random access response in the corresponding downlink beam direction according to the received random access request Msg1, and if the random access response is a contention random access, a subsequent random access process is performed (not described in detail herein).

A terminal side:

step 45, the terminal determines the random access resource configuration on the multiple beams by receiving the system message or receiving the RRC dedicated signaling. Each beam direction has independent random access resource configuration, and the random access resource configuration of each beam direction corresponds to one random access resource set.

Step 46, the terminal receives a PDCCH order sent by the base station side, the PDCCH order carries a resource mapping indication domain and a beam indication domain, and according to the resource mapping indication domain and the beam indication domain, determines a specific available random access resource corresponding to the resource mapping indication domain on an assigned beam (i.e. determines a dedicated random access resource allocated by the base station for the terminal).

And step 47, the terminal performs channel measurement on the SSB/CSI-RS in the downlink beam corresponding to the allocated dedicated random access resource (obtains Reference Signal Received Power (RSRP)), compares the measurement result with a channel quality threshold, selects a non-competitive random access resource corresponding to the SSB/CSI-RS above the threshold, initiates random access, and selects other SSB/CSI-RSs and random access resources corresponding to the SSB/CSI-RSs to initiate competitive random access according to a channel quality threshold criterion if the channel quality of the downlink beam corresponding to the allocated non-competitive random access resource is lower than the threshold.

And step 48, the terminal monitors and receives the Msg2, judges whether the random access is successful or not, and if the random access is competitive, the terminal needs to perform the subsequent random access process.

Example five: and aiming at the scene of recovering BFR due to beam failure, RRC signaling triggers random access.

A base station side:

step 51, the base station configures the terminal with the random access resource configuration on multiple beams through a system message or RRC dedicated signaling. Specifically, SSBs (Synchronization Signal blocks) in different downlink directions, CSI-RSs (channel state information reference signals) in different downlink directions, or TCIs (Transmission Configuration indicators) in different downlink directions correspond to different random access resource configurations, respectively. Each beam direction has independent random access resource configuration, and the random access resource configuration of each beam direction corresponds to one random access resource set.

Step 52, the base station side allocates a non-contention random access resource for BFR to the terminal through the RRC dedicated signaling, that is, sends random access resource allocation information to the terminal through the RRC dedicated signaling, where the non-contention random access resource indication carries PARCH resource mapping indication and beam indication, and the random access resource allocation information carries resource mapping indication field and beam indication field, and the beam indication field may be TCI state identification (TCI state ID), SSB index (SSB index), CSI-RS resource set identification (CSI-RS resource set ID), or a combination thereof. The beam indication field is used for indicating that the resource mapping indication field is particularly suitable for partial beams or all beams.

In step 53, the base station receives a random access request Msg1 initiated by the terminal on the dedicated random access resource allocated to the terminal. If the special random access resources are distributed in the directions of the beams, monitoring is carried out at random access resource positions corresponding to different SSB/CSI-RS, and the special random access resources are determined by a resource mapping indication domain and a mapping relation of random access resource configuration configured on each beam; the random access resource configurations allocated on different beams may be the same or different.

In step 54, the base station sends a random access response in the corresponding downlink beam direction according to the received random access request Msg1, and if the random access response is a contention random access, a subsequent random access process is performed (not described in detail herein).

A terminal side:

step 55, the terminal determines the random access resource configuration on the multiple beams by receiving a system message or receiving RRC dedicated signaling. Each beam direction has independent random access resource configuration, and the random access resource configuration of each beam direction corresponds to one random access resource set.

Step 56, the terminal receives the random access resource allocation information for BFR carried in the RRC signaling sent by the base station side, parses the resource mapping indication field and the beam indication field of the random access resource allocation information, and determines the specific available random access resource corresponding to the resource mapping indication field on the designated beam (i.e. determines the dedicated random access resource allocated by the base station for the terminal).

And 57, the terminal performs channel measurement on the SSB/CSI-RS in the downlink beam corresponding to the allocated special random access resource (obtains Reference Signal Received Power (RSRP)), compares the measurement result with a channel quality threshold, selects the non-competitive random access resource corresponding to the SSB/CSI-RS above the threshold, initiates random access, and selects other SSB/CSI-RSs and the corresponding random access resources thereof to initiate competitive random access according to a channel quality threshold criterion if the channel quality of the downlink beam corresponding to the allocated non-competitive random access resource is lower than the threshold.

And step 58, the terminal monitors and receives the Msg2, judges whether the random access is successful or not, and if the random access is competitive, the subsequent random access process is carried out.

Example six: for resource allocation under multiple partial bandwidth BWP, RRC signaling triggers random access.

A base station side:

and step 61, the base station configures the random access resource configuration on a plurality of BWPs for the terminal through system messages or RRC dedicated signaling. Each BWP has independent random access resource configuration, and the random access resource configuration of each BWP corresponds to one random access resource set.

Step 62, the base station side allocates a non-contention random access resource to the terminal through an RRC dedicated signaling (for example, a handover command or an SCG (Secondary Cell Group) addition command, specifically, an RRC reconfiguration procedure, where the command is carried through an RRC reconfiguration message), that is, sends random access resource allocation information to the terminal through the RRC dedicated signaling, where the random access resource allocation information carries a resource mapping indication field and a BWP indication field. The BWP indication field may indicate a specific BWP; or no BWP indication, indicating that the resource mapping indication field is applicable to all BWPs configured for the terminal.

And step 63, the base station receives a random access request Msg1 initiated by the terminal on the special random access resource allocated to the terminal. If dedicated random access resources are allocated on all BWPs, listening on the BWPs that may be activated for random access (e.g., the currently activated BWP and the initial BWP), the dedicated random access resources being determined by the correspondence between the resource mapping indication field and the random access resource configuration configured on each BWP. The random access resource configurations allocated on different BWPs may be the same or different.

And step 64, the base station sends a random access response on the downlink BWP corresponding to the uplink BWP sent by the Msg1 according to the received random access request Msg1, and if the random access response is a competitive random access, the base station further performs a subsequent random access process.

A terminal side:

in step 65, the terminal determines the configuration of random access resources on multiple BWPs by receiving system messages or receiving RRC dedicated signaling. Each BWP has independent random access resource configuration, and the random access resource configuration of each BWP corresponds to one random access resource set.

Step 66, the terminal receives an RRC signaling (for example, a handover command or an SCG addition command, etc.) sent by the base station side, where the RRC signaling carries a resource mapping indication field and a BWP indication field, and determines a specific available random access resource corresponding to the resource mapping indication field on the specified BWP according to the resource mapping indication field and the BWP indication field.

Step 67, if there is dedicated random access resource allocation on multiple BWPs, the terminal determines whether there is random access resource allocation on the currently activated BWP, if so, initiates random access on the currently activated BWP, if not, changes to the initial BWP (initial BWP) to initiate random access, optionally, the currently activated BWP has no non-contention random access resource allocation but random access resource allocation, initiates contention random access on the currently activated BWP, and does not perform BWP change.

And step 68, the terminal monitors and receives the Msg2, judges whether the random access is successful or not, and if the random access is competitive, the terminal needs to perform the subsequent random access process.

Example seven: for on demand resource reservation of system message request (on demand SI), a system message in RRC signaling triggers random access.

A base station side:

step 71, the base station side distributes a random access resource reservation message for a system message request (on demand SI) to the terminal through system message broadcasting, wherein the random access resource reservation message carries a resource mapping indication domain and an uplink carrier indication domain, and the uplink carrier indication domain can indicate a specific carrier; or not performing uplink carrier indication, which means that the resource mapping indication domain is applicable to all uplink carriers.

Step 72, the base station receives a random access request Msg1 on the random access resource which is allocated for the terminal and reserved for the system message request; if random access resources used for system message requests are reserved on a plurality of uplink carriers, monitoring at random access resource positions corresponding to different uplink carriers, wherein the random access resources are determined by a corresponding relation between a resource mapping indication domain and random access resource configurations configured on each uplink carrier; the random access resource configurations allocated on different uplink carriers may be the same or different.

Step 73: and the base station sends a random access response on a downlink carrier according to the received random access request Msg 1.

A terminal side:

step 74, the terminal receives the system message broadcast (the system message carries the reservation message of the random access resource), and determines the random access resource allocated to the system message request (on demand SI), the reservation message of the random access resource carries the resource mapping indication domain and the uplink carrier indication domain, and the uplink carrier indication domain can indicate the specific carrier; or not performing uplink carrier indication, which means that the resource mapping indication domain is applicable to all uplink carriers.

Step 75, if there are random access resources reserved for system message requests on multiple uplink carriers, the terminal performs channel measurement (acquires RSRP) on the downlink carriers, compares the measurement result with a channel quality threshold, if the measurement result is higher than the threshold, initiates a random access request Msg1 using the random access resources on the conventional uplink carrier UL, and if the measurement result is lower than the threshold, initiates a random access request Msg1 using the random access resources on the auxiliary uplink carrier SUL.

And step 76, the terminal monitors and receives the Msg2 and judges whether the random access is successful or not.

In summary, the application scenarios of the above embodiments of the present invention mainly include: 1) aiming at a scene that one cell comprises one downlink carrier and a plurality of uplink carriers (RRC signaling triggering random access or physical layer signaling PDCCH triggering random access); 2) for a beam selection scenario (RRC signaling triggered random access or physical layer signaling PDCCH triggered random access); 3) scenarios for BFR (RRC signaling triggered random access); 4) resource allocation (RRC signaling triggered random access or physical layer signaling PDCCH triggered random access) under multiple BWPs; 5) random access resource reservation for on demand SI (system message triggered random access in RRC signaling).

In summary, the resource indication method provided in the above embodiments of the present invention can reasonably allocate random access resources to a terminal, ensure that the terminal can initiate non-contention random access on the most reasonable resources (BWP, uplink carrier, or cell), and ensure that the signaling for allocating random access resources is minimized and the signaling process is optimized, thereby achieving the effects of saving signaling overhead, shortening the signaling interaction delay between the base station and the terminal, and improving the success rate of random access.

As shown in fig. 5, an embodiment of the present invention further provides a base station, including: a transceiver 520, a memory 510, a processor 500, and a program stored on the memory 510 and executable on the processor 500; the processor 500 is configured to read a program in a memory and control the transceiver 520 to transmit random access resource allocation information to a terminal, the random access resource allocation information including a resource mapping indication field for indicating a location of a dedicated random access resource allocated to the terminal in at least one random access resource configuration;

wherein the random access resource configuration comprises at least one of:

Preferably, in the above embodiments of the present invention, the transceiver 520 is further configured to:

Preferably, in the above embodiment of the present invention, the random access resource allocation information further includes: at least one of a BWP indication field, an uplink carrier indication field, a beam indication field, and a cell indication field;

Preferably, in the above embodiment of the present invention, the random access resource allocation information further includes: an uplink carrier indication domain and/or a beam indication domain;

Preferably, in the above embodiment of the present invention, the random access resource allocation information further includes:

It should be noted that, the base station provided in the above embodiments of the present invention is a base station capable of executing the above resource indication method, and all embodiments of the resource indication method are applicable to the base station and can achieve the same or similar beneficial effects.

As shown in fig. 6, an embodiment of the present invention further provides a device for indicating random access resources, including:

an allocation sending module 601, configured to send random access resource allocation information including a resource mapping indication field to a terminal, where the resource mapping indication field is used to indicate a location of a dedicated random access resource allocated to the terminal in at least one random access resource configuration;

wherein the random access resource configuration comprises at least one of:

Preferably, in the above embodiment of the present invention, the allocating and sending module includes:

and the first sending submodule is used for sending random access resource allocation information to the terminal through Radio Resource Control (RRC) signaling, and the random access resource allocation information comprises the resource mapping indication domain.

and the second sending submodule is used for sending random access resource allocation information to the terminal through a system message of a broadcast cell, wherein the random access resource allocation information comprises the resource mapping indication domain.

and a third sending submodule, configured to send random access resource allocation information to the terminal through a physical layer signaling carried by a physical layer downlink control channel PDCCH, where the random access resource allocation information includes the resource mapping indication field.

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

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

As shown in fig. 5, an embodiment of the present invention further provides a terminal, including: a transceiver 520, a memory 510, a processor 500, and a program stored on the memory 510 and executable on the processor 500; the transceiver 520 is configured to receive random access resource allocation information sent by a base station, where the random access resource allocation information includes a resource mapping indication field, and the resource mapping indication field is used to indicate a location of a dedicated random access resource allocated to a terminal in at least one random access resource configuration;

the processor 500 is used for reading the program in the memory and executing the following processes: and selecting the special random access resource allocated to the terminal from the random access resource configuration according to the indication of the resource mapping indication domain, and initiating a random access process.

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

As shown in fig. 7, an embodiment of the present invention further provides a random access apparatus, including:

a receiving module 701, configured to receive random access resource allocation information including a resource mapping indication field sent by a base station, where the resource mapping indication field is used to indicate a location of a dedicated random access resource allocated to a terminal in at least one random access resource allocation;

an access module 702, configured to select, according to the indication of the resource mapping indication field, a dedicated random access resource allocated to the terminal from the random access resource configuration, and initiate a random access process.

Preferably, in the above embodiment of the present invention, the receiving module includes:

and the first receiving submodule is used for receiving random access resource allocation information sent to the terminal by the base station through Radio Resource Control (RRC) signaling, and the random access resource allocation information comprises the resource mapping indication domain.

and the second receiving submodule is used for receiving random access resource allocation information sent to the terminal by the base station through the system message of the broadcast cell, wherein the random access resource allocation information comprises the resource mapping indication domain.

and the third receiving submodule is used for receiving random access resource allocation information sent to the terminal by the base station through physical layer signaling carried by a physical layer downlink control channel (PDCCH), and the random access resource allocation information comprises the resource mapping indication domain.

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

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

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

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

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

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

Claims

1. A method for indicating random access resources, comprising:

wherein the random access resource configuration comprises at least one of:

random access resource configuration based on a part of bandwidth BWP dimension, random access resource configuration based on a beam direction dimension, random access resource configuration based on an uplink carrier dimension and random access resource configuration based on a cell dimension;

wherein the random access resource allocation information further comprises at least one of:

a BWP indication field for indicating a BWP to which the resource mapping indication field is applicable; or

An uplink carrier indication domain, wherein the uplink carrier indication domain is used for indicating the uplink carrier applicable to the resource mapping indication domain; or

A beam indication field for indicating a beam applicable to the resource mapping indication field; or

A cell indication domain, wherein the cell indication domain is used for indicating the applicable cell of the resource mapping indication domain.

2. The method of claim 1, wherein the step of sending the random access resource allocation information containing the resource mapping indication field to the terminal comprises:

3. The method of claim 1, wherein the step of sending the random access resource allocation information containing the resource mapping indication field to the terminal comprises:

4. The method of claim 1, wherein the step of sending the random access resource allocation information containing the resource mapping indication field to the terminal comprises:

5. The method of claim 1, wherein the random access resource allocation information further comprises:

6. A random access method, comprising:

according to the indication of the resource mapping indication domain, selecting a special random access resource allocated to a terminal from the random access resource configuration, and initiating a random access process;

7. The method of claim 6, wherein the step of receiving the random access resource allocation information containing the resource mapping indication field sent by the base station comprises:

8. The method of claim 6, wherein the step of receiving the random access resource allocation information containing the resource mapping indication field sent by the base station comprises:

9. The method of claim 6, wherein the step of receiving the random access resource allocation information containing the resource mapping indication field sent by the base station comprises:

10. The method of claim 6, wherein the random access resource allocation information further comprises:

11. A base station, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; wherein the processor is configured to read a program in the memory and control the transceiver to send random access resource allocation information to the terminal, the random access resource allocation information including a resource mapping indication field, the resource mapping indication field indicating a location of a dedicated random access resource allocated to the terminal in at least one random access resource configuration;

wherein the random access resource configuration comprises at least one of:

12. The base station of claim 11, wherein the transceiver is further configured to:

13. The base station of claim 11, wherein the transceiver is further configured to:

14. The base station of claim 11, wherein the transceiver is further configured to:

15. The base station of claim 11, wherein the random access resource allocation information further comprises:

16. A random access resource indication apparatus, comprising:

wherein the random access resource configuration comprises at least one of:

17. 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 resource indication method according to any one of claims 1 to 5.

18. A terminal, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor; it is characterized in that the preparation method is characterized in that,

the transceiver is used for receiving random access resource allocation information which is sent by a base station and contains a resource mapping indication domain, and the resource mapping indication domain is used for indicating the position of a special random access resource allocated to a terminal in at least one random access resource allocation;

the processor is used for reading the program in the memory and executing the following processes: according to the indication of the resource mapping indication domain, selecting a special random access resource allocated to a terminal from the random access resource configuration, and initiating a random access process;

19. The terminal of claim 18, wherein the transceiver is further configured to:

20. The terminal of claim 18, wherein the transceiver is further configured to:

21. The terminal of claim 18, wherein the transceiver is further configured to:

22. The terminal of claim 18, wherein the random access resource allocation information further comprises:

23. A random access apparatus, comprising:

an access module, configured to select, according to the indication of the resource mapping indication field, a dedicated random access resource allocated to the terminal from the random access resource configuration, and initiate a random access process;

24. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the random access method according to any one of claims 6 to 10.