CN111294973B - Random access method and device, storage medium and user terminal - Google Patents
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- 230000000977 initiatory effect Effects 0.000 claims abstract description 8
- 238000004891 communication Methods 0.000 abstract description 15
- 238000013468 resource allocation Methods 0.000 description 7
- 230000001960 triggered effect Effects 0.000 description 7
- 238000005259 measurement Methods 0.000 description 5
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
- H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0866—Non-scheduled access, e.g. ALOHA using a dedicated channel for access
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Abstract
A random access method and device, storage medium and user terminal are provided, the method comprises: receiving control information, and determining indication information according to the control information, wherein the indication information is used for indicating that the random access is 2-step random access or 4-step random access; and initiating random access according to the control information. The scheme of the invention can trigger the UE to initiate the random access in a more accurate mode by configuring proper control information, thereby improving the communication effectiveness.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a random access method and apparatus, a storage medium, and a user terminal.
Background
Two random access modes are supported in a New Radio (NR) system, one mode is competitive random access, and the UE selects a resource to send a Preamble; another non-contention Random Access method is, for example, triggered by a Physical Downlink Control Channel Order (PDCCH Order), a base station (gnnodeb, gNB) informs a User Equipment (UE) of the need to re-initiate Random Access through a special Downlink Control Information (DCI) format, and informs the UE of a Preamble Index (Preamble Index) and a Physical Random Access Channel (PRACH) Mask Index (Mask Index) that should be used. Specifically, NR is a PDCCH Order transmitted based on DCI format 1_ 0.
In the prior art, for PDCCH order triggered Random Access, the NR R15 protocol only supports 4-step Random Access (4-step RACH) triggering, however, in the case where it is already clear that NR R16 needs to support 2-step RACH, there is no scheme for triggering 2-step RACH at present.
Disclosure of Invention
The invention aims to provide a random access method and device, a storage medium and a user terminal, which can trigger UE to initiate random access in a more accurate mode by configuring proper control information and improve the communication effectiveness.
To solve the above technical problem, an embodiment of the present invention provides a random access method, including the following steps: receiving control information, and determining indication information according to the control information, wherein the indication information is used for indicating that the random access is 2-step random access or 4-step random access; and initiating random access according to the control information.
Optionally, the indication information is an indication field and is included in the control information; determining the indication information according to the control information includes: and searching the indication field from the control information, if the indication field is a preset bit value, determining to adopt 2-step random access, and otherwise, determining to adopt 4-step random access.
Optionally, the indication information is the control information; determining the indication information according to the control information includes: and if the control information is scrambled by adopting a preset RNTI, determining to adopt 2-step random access.
Optionally, the control information further includes CSI request field information.
Optionally, the control information further includes a β offset indication.
Optionally, the control information further includes a TB scaling factor.
Optionally, the control information is DCI1_ 0.
Optionally, the length of the control information is consistent with the length of the DCI1_ 0.
To solve the foregoing technical problem, an embodiment of the present invention provides a random access apparatus, including: the receiving module is suitable for receiving control information and determining indication information according to the control information, wherein the indication information is used for indicating that the random access is 2-step random access or 4-step random access; and the access module is suitable for initiating random access according to the control information.
To solve the foregoing technical problems, embodiments of the present invention provide a storage medium having stored thereon computer instructions, which when executed perform the steps of the random access method described above.
In order to solve the foregoing technical problem, an embodiment of the present invention provides a user terminal, which includes a memory and a processor, where the memory stores computer instructions capable of being executed on the processor, and the processor executes the steps of the random access method when executing the computer instructions.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
in the embodiment of the invention, control information is received, and indication information is determined according to the control information, wherein the indication information is used for indicating that the random access is 2-step random access or 4-step random access; and initiating random access according to the control information. By adopting the scheme, the UE can determine the random access to be 2-step random access or 4-step random access by determining the indication information according to the control information, so that the random access is initiated by adopting a proper random access mode. Compared with the prior art, the scheme of triggering 2-step random access is not adopted, and by adopting the scheme of the embodiment of the invention, proper control information can be configured to trigger the UE to initiate the random access in a more accurate mode, so that the communication effectiveness is improved.
Furthermore, the indication information can be configured in various ways, which is helpful for selecting a proper way according to specific situations in specific implementation, thereby improving user experience.
Further, the control information may further include CSI request field information for triggering aperiodic CSI measurement reporting, so that the UE can more accurately determine whether to trigger aperiodic CSI measurement reporting, thereby further improving communication effectiveness.
Further, the control information may further include a β offset indication, which is helpful for the UE to determine the number of resources for multiplexing Hybrid Automatic Repeat request Acknowledgement (HARQ-ACK) information and CSI report in a Physical Uplink Shared Channel (PUSCH), so as to more accurately obtain the random access related parameters configured by the base station, thereby further improving the communication effectiveness.
Further, the control information may further include a TB scaling factor, which is helpful for enabling the UE to more accurately obtain the size of the TB configured by the base station, and further improves the communication effectiveness.
Drawings
Fig. 1 is a flowchart of a random access method according to an embodiment of the present invention;
fig. 2 is a flow chart of another random access method in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a random access apparatus according to an embodiment of the present invention.
Detailed Description
In existing non-contention random access techniques, the NR may send PDCCH Order based on control information (e.g., DCI format 1_0), notify the UE that random access needs to be re-initiated, and tell the UE the preamble index and PRACH mask index that should be used.
Specifically, NR may transmit PDCCH Order based on DCI format 1_0, that is, the length is the same as DCI format 1_0, scrambling is performed with C-RNTI, and a part of fields in format 1_0 are reused for indicating random access information, such as using Frequency Domain Resource allocation (Frequency Domain Resource Assignment) field, when the field information is all 1, it indicates that DCI1_0 is used for PDCCH Order triggered random access.
More specifically, the DCI format 1_0 may be configured to include the following information for random access:
an Identifier (Identifier for DCI formats) of the DCI format, which adopts a 1bit indication to indicate that the current DCI format is DCI1_ 0;
a frequency domain resource allocation field, all bits being set to 1, wherein, if a Cyclic Redundancy Check (CRC) of the DCI format 1_0 is scrambled by the C-RNTI and the frequency domain resource allocation field is all 1, the DCI format 1_0 is used for a random access procedure initiated by a Physical Downlink Control Channel (PDCCH) command;
a Random Access Preamble Index (Random Access Preamble Index) indicated by 6 bits;
an Uplink (UL)/Supplemental Uplink (SUL) indication (Indicator), which adopts a 1-bit indication;
synchronization Signal (SS)/Physical Broadcast Channel (PBCH) Index (Index), indicated with 6 bits;
a Physical Random Access Channel (PRACH) Mask index (Mask index) indicated by 4 bits;
finally, all the remaining Bits in the DCI format 1_0 are configured as Reserved Bits (Reserved Bits), and 10Bits are used for indication.
The inventor of the present invention has studied to find that in the prior art, for PDCCH order triggered random access, the NR R15 protocol only supports triggered 4-step random access, however, in the case that it is already clear that NR R16 needs to support 2-step RACH, there is no scheme for triggering 2-step RACH at present. It is easy to cause that it is difficult for the UE to determine which way to initiate random access, which affects the effectiveness of communication.
In the embodiment of the invention, control information is received, and indication information is determined according to the control information, wherein the indication information is used for indicating that the random access is 2-step random access or 4-step random access; and initiating random access according to the control information. By adopting the scheme, the UE can determine the random access to be 2-step random access or 4-step random access by determining the indication information according to the control information, so that the random access is initiated by adopting a proper random access mode. Compared with the prior art, the scheme of triggering 2-step random access is not adopted, and by adopting the scheme of the embodiment of the invention, proper control information can be configured to trigger the UE to initiate the random access in a more accurate mode, so that the communication effectiveness is improved.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, fig. 1 is a flowchart of a random access method in an embodiment of the present invention. The random access method may include steps S11 to S12:
step S11: receiving control information, and determining indication information according to the control information, wherein the indication information is used for indicating that the random access is 2-step random access or 4-step random access;
step S12: and initiating random access according to the control information.
In a specific implementation of step S11, the NR may send PDCCH Order based on the control information, which may be DCI, and may be selected from: DCI0, DCI1, DCI1A, DCI1B, DCI1C, DCI1D, DCI2, DCI2A, DCI2B, DCI3, DCI3A, DCI1_0, and DCI1_ 1.
Preferably, the control information is DCI1_ 0.
In the embodiment of the present invention, by using DCI1_0 as the control information, the present invention may be more consistent with the conventional technology, and improve the adaptability.
In a specific implementation, the UE may determine indication information according to the control information, where the indication information is used to indicate that the random access is 2-step random access or 4-step random access.
In the embodiment of the invention, the UE can determine the random access to be 2-step random access or 4-step random access by determining the indication information according to the control information, so that the random access is initiated by adopting a proper random access mode.
Specifically, the indication information may be set as an indication field and included in the control information, so that the base station may perform explicit indication through the indication field in the control information; the indication information may also be the control information, so that the base station may perform implicit indication by using a specific Radio Network Temporary Identifier (RNTI) scrambling manner.
In a specific implementation of step S12, the UE may initiate random access according to the control information.
Specifically, the UE may determine to adopt 2-step random access or 4-step random access according to the indication information, and further initiate random access according to the indication of other bits in the control information.
In the embodiment of the invention, the UE can determine the random access to be 2-step random access or 4-step random access by determining the indication information according to the control information, so that the random access is initiated by adopting a proper random access mode. Compared with the prior art, the scheme of triggering 2-step random access is not adopted, and by adopting the scheme of the embodiment of the invention, proper control information can be configured to trigger the UE to initiate the random access in a more accurate mode, so that the communication effectiveness is improved.
Referring to fig. 2, fig. 2 is a flowchart of another random access method in an embodiment of the present invention. The another random access method may include steps S21 and S23, and may further include steps S22 and S23, which are described below.
In step S21, receiving control information, searching the indication field from the control information, if the indication field is a preset bit value, determining to adopt 2-step random access, otherwise determining to adopt 4-step random access.
Specifically, the indication field may be configured as a preset bit, for example, referred to as a 2step/4step Indicator (Indicator), and 1bit is used for indication.
More specifically, a preset bit value may be used to indicate 2-step random access or 4-step random access, for example: if the value of the indication field is 1, determining to adopt 2-step random access; and if the value of the indication field is 0, determining to adopt 4-step random access.
In the embodiment of the invention, the base station can perform explicit indication through an indication field in the control information so that the UE accurately determines to adopt 2-step random access or 4-step random access.
Further, the control Information may further include Channel State Information Request (CSI Request) field Information.
The CSI request field information is used for triggering aperiodic CSI measurement report, and when all CSI request fields in the control information are set to be zero, the CSI request fields do not request CSI.
Specifically, the bit number of the CSI request field may be determined by a higher-layer parameter reporting Trigger Size (Report Trigger Size), for example, according to a difference of the Report Trigger Size, the bit number of the CSI request field may be configured to be 0,1,2,3,4,5, or 6 bits.
In the embodiment of the present invention, the control information may further include CSI request field information for triggering aperiodic CSI measurement reporting, so that the UE can more accurately determine whether to trigger aperiodic CSI measurement reporting, and further improve the communication effectiveness.
Further, the control information may further include a β offset Indicator (Beta _ offset Indicator).
Wherein the β -offset indication is used to define an offset for the UE to determine an amount of resources for multiplexing Hybrid Automatic Repeat request Acknowledgement (HARQ-ACK) information and CSI reports in a Physical Uplink Shared Channel (PUSCH).
Specifically, the bit of the β offset indication may be 0 if the higher layer parameter Beta Offsets is semiStatic, otherwise the bit of the β offset indication may be 2bits as defined in table 9.3-3 of [9.3, TS38.213 ].
In the embodiment of the present invention, the control information may further include a β offset indication, which is helpful for enabling the UE to determine the number of resources for multiplexing the HARQ-ACK information and multiplexing the CSI report in the PUSCH, so as to more accurately acquire the random access related parameters configured by the base station, and further improve the communication effectiveness.
It should be noted that, in the specific implementation, when the 2-step random access is adopted, the control information only includes the CSI request field information and the β offset indication, that is, when the 4-step random access is adopted, the embodiment of the present invention does not specifically limit whether the control information includes the above parameters.
In a first specific implementation manner of the embodiment of the present invention, the control information may be configured to include the following information for random access:
the identifier of the DCI format is indicated by 1 bit;
a frequency domain resource allocation field, all bits being set to 1;
randomly accessing a lead code index, and adopting 6bits to indicate;
UL/SUL indication, which adopts 1bit indication;
SS/PBCH index, using 6bits to indicate;
PRACH Mask Index, using 4bits to indicate;
it should be noted that, in the prior art, a 10bits Reserved bit (Reserved) is configured, however, in the embodiment of the present invention, the following information needs to be configured in the Reserved bit:
2step/4step Indicator, adopting 1bit to indicate;
according to the difference of the Report Trigger Size, the CSI Request can adopt 0bit, 1bit, 2bits, 3bits, 4bits, 5bits or 6bits for indication;
beta _ offset Indicator, using 0bit or 2bits indication.
Further, the length of the control information in each specific embodiment may be set to be uniform.
Preferably, the length of the control information may coincide with the length of DCI1_ 0.
In particular, by setting the length of the control information to be consistent, especially consistent with the length of DCI1_0, consistency and adaptability as in the prior art can be better achieved, for example, the DCI length of the PDCCH order for triggering 2-step RACH is the same as the DCI length of the PDCCH order for triggering 4-step RACH.
In a first specific implementation manner of the embodiment of the present invention, in addition to the above information, other bits of the control information may be configured as reserved bits, for example, configured as 0.
Specifically, the other bits may be 1bit to 9bits according to the initial reserved bit being 10 bits.
In a second specific implementation manner of the embodiment of the present invention, the control information may further include a Transport Block (TB) Scaling factor (Scaling).
Specifically, the TB Scaling is used to determine the Size (Size) of the UL SCH part TB in PUSCH in information a (MessageA, MsgA).
In the embodiment of the present invention, the control information may further include a TB scaling factor, which is helpful for enabling the UE to more accurately acquire the size of an Uplink Shared Channel (UL SCH) TB, and further improve the communication effectiveness.
It should be noted that, in the specific implementation, when 2-step random access is adopted, the control information will include the TB scaling factor, that is, when 4-step random access is adopted, the embodiment of the present invention does not specifically limit whether the control information includes the above parameters.
In a second specific implementation manner of the embodiment of the present invention, the control information may be configured to include the following information for random access:
the identifier of the DCI format is indicated by 1 bit;
a frequency domain resource allocation field, all bits being set to 1;
randomly accessing a lead code index, and adopting 6bits to indicate;
UL/SUL indication, which adopts 1bit indication;
SS/PBCH index, using 6bits to indicate;
PRACH Mask Index, using 4bits to indicate;
it should be noted that, in the prior art, there are 10bits Reserved bits (Reserved), however, in the embodiment of the present invention, the following information needs to be configured in the Reserved bits:
2step/4step Indicator, adopting 1bit to indicate;
according to the difference of the Report Trigger Size, the CSI Request can adopt 0bit, 1bit, 2bits, 3bits, 4bits, 5bits or 6bits for indication;
the Beta _ offset Indicator adopts 0bit or 2bits for indication;
TB Scaling, indicated with 2 bits.
Further, the length of the control information in each specific embodiment may be set to be uniform.
Preferably, the length of the control information may coincide with the length of DCI1_ 0.
In particular, by setting the length of the control information to be consistent, especially consistent with the length of DCI1_0, consistency and adaptability as in the prior art can be better achieved, for example, the DCI length of the PDCCH order for triggering 2-step RACH is the same as the DCI length of the PDCCH order for triggering 4-step RACH.
In a second specific implementation manner of the embodiment of the present invention, in addition to the above information, other bits of the control information may be configured as reserved bits, for example, configured as 0.
Specifically, the other bits may be 0bits to 7bits according to the initial reserved bit being 10 bits.
In step S22, control information is received, and if the control information is scrambled with a preset RNTI, it is determined that 2-step random access is used.
Specifically, the base station may perform implicit indication by scrambling a specific Radio Network Temporary Identifier (RNTI), for example, scrambling by an R-RNTI, and then determine to adopt 2-step random access.
In the embodiment of the invention, the base station can perform implicit indication by scrambling the special RNTI, so that the UE can accurately determine to adopt 2-step random access or 4-step random access.
Further, the control information may further include CSI Request field information.
Further, the control information may further include a Beta _ offset Indicator.
For more details of the CSI Request field information and the Beta _ offset Indicator, please refer to the related description in step S21, and the details are not repeated herein.
In a third specific implementation manner of the embodiment of the present invention, the control information may be configured to include the following information for random access:
an identifier of the DCI format is indicated by 1 bit;
a frequency domain resource allocation field, all bits being set to 1;
randomly accessing a lead code index, and adopting 6bits to indicate;
UL/SUL indication, which adopts 1bit indication;
SS/PBCH index, using 6bits to indicate;
PRACH Mask Index, using 4bits to indicate;
it should be noted that, in the prior art, there are 10bits Reserved bits (Reserved), however, in the embodiment of the present invention, if the information indicates that the 2-step RACH is triggered, the PDCCH order initiated random access further needs to configure the following information:
according to the difference of the Report Trigger Size, the CSI Request can adopt 0bit, 1bit, 2bits, 3bits, 4bits, 5bits or 6bits for indication;
beta _ offset Indicator, using 0bit or 2bits indication.
Further, the length of the control information in each specific embodiment may be set to be uniform.
Preferably, the length of the control information may coincide with the length of DCI1_ 0.
Specifically, the length of the control information may be equal to the length of the multi-purpose DCI1_0, for example, may be equal to the length of the DCI1_0 scheduling the PDSCH or the DCI1_0 scheduling the system information.
In particular, by setting the length of the control information to be consistent, especially consistent with the length of DCI1_0, consistency and adaptability as in the prior art can be better achieved, for example, the DCI length of the PDCCH order for triggering 2-step RACH is the same as the DCI length of the PDCCH order for triggering 4-step RACH.
In a third specific implementation manner of the embodiment of the present invention, in addition to the above information, other bits of the control information may be configured as reserved bits, for example, configured as 0.
Specifically, the reserved bits may be 2bits to 10 bits.
In a fourth specific implementation manner of the embodiment of the present invention, the control information may further include TB Scaling.
For more details about TB Scaling, please refer to the related description in step S21, and the details are not repeated herein.
In a fourth specific implementation manner of the embodiment of the present invention, the control information may be configured to include the following information for random access:
the identifier of the DCI format is indicated by 1 bit;
a frequency domain resource allocation field, all bits being set to 1;
randomly accessing a lead code index, and adopting 6bits to indicate;
UL/SUL indication, which adopts 1bit indication;
SS/PBCH index, using 6bits to indicate;
PRACH Mask Index, using 4bits to indicate;
it should be noted that there are 10bits Reserved bits (Reserved) in the prior art, however, in the embodiment of the present invention, if the above information indicates that 2-step RACH is triggered, PDCCH order initiated random access, the following information needs to be configured:
according to the difference of the Report Trigger Size, the CSI Request can adopt 0bit, 1bit, 2bits, 3bits, 4bits, 5bits or 6bits for indication;
the Beta _ offset Indicator adopts 0bit or 2bits for indication;
TB Scaling, indicated with 2 bits.
Further, the length of the control information in each specific embodiment may be set to be uniform.
Preferably, the length of the control information may coincide with the length of DCI1_ 0.
In particular, by setting the length of the control information to be consistent, especially consistent with the length of DCI1_0, consistency and adaptability as in the prior art can be better achieved, for example, the DCI length of the PDCCH order for triggering 2-step RACH is the same as the DCI length of the PDCCH order for triggering 4-step RACH.
In a fourth specific implementation manner of the embodiment of the present invention, in addition to the above information, other bits of the control information may be configured as reserved bits, for example, configured as 0.
Specifically, the reserved bit may be 0bits to 8 bits.
In step S23, the UE may initiate random access according to the control information.
Specifically, the UE may determine to adopt 2-step random access or 4-step random access according to the indication information, and further initiate random access according to the indication of other bits in the control information.
In a specific implementation, more details regarding step S23 are described with reference to step S12 in fig. 1, and are not described herein again.
In the embodiment of the invention, the indication information can be configured in various ways, which is beneficial to selecting a proper way according to specific conditions in specific implementation and improving the user experience.
In the embodiment of the invention, the UE can determine the random access to be 2-step random access or 4-step random access by determining the indication information according to the control information, so that the random access is initiated by adopting a proper random access mode. Compared with the prior art, the scheme of triggering 2-step random access is not adopted, and by adopting the scheme of the embodiment of the invention, proper control information can be configured to trigger the UE to initiate the random access in a more accurate mode, so that the communication effectiveness is improved.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a random access apparatus according to an embodiment of the present invention. The random access apparatus may include:
a receiving module 31, adapted to receive control information and determine indication information according to the control information, where the indication information is used to indicate that the random access is 2-step random access or 4-step random access;
and an access module 32 adapted to initiate random access according to the control information.
In the embodiment of the invention, the UE can determine the random access to be 2-step random access or 4-step random access by determining the indication information according to the control information, so that the random access is initiated by adopting a proper random access mode. Compared with the prior art, the scheme of triggering 2-step random access is not adopted, and by adopting the scheme of the embodiment of the invention, proper control information can be configured to trigger the UE to initiate the random access in a more accurate mode, so that the communication effectiveness is improved.
For the principle, specific implementation and beneficial effects of the random access apparatus, please refer to the related description about the random access method shown in the foregoing and fig. 1 to 2, which is not repeated herein.
An embodiment of the present invention further provides a storage medium, on which computer instructions are stored, and when the computer instructions are executed, the steps of the random access method shown in fig. 1 to 2 are executed. The storage medium may be a computer-readable storage medium, and may include, for example, a non-volatile (non-volatile) or non-transitory (non-transitory) memory, and may further include an optical disc, a mechanical hard disk, a solid state hard disk, and the like.
An embodiment of the present invention further provides a user terminal, which includes a memory and a processor, where the memory stores computer instructions capable of being executed on the processor, and the processor executes the steps of the random access method shown in fig. 1 to 2 when executing the computer instructions. The user terminal includes, but is not limited to, a mobile phone, a computer, a tablet computer and other terminal devices.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. A random access method, comprising the steps of:
receiving control information, and determining indication information according to the control information, wherein the indication information is used for indicating that the random access is 2-step random access or 4-step random access;
initiating random access according to the control information;
wherein the indication information is the control information;
determining the indication information according to the control information includes:
and if the control information is scrambled by adopting a preset Radio Network Temporary Identifier (RNTI), determining to adopt 2-step random access.
2. The random access method of claim 1, wherein the control information further comprises Channel State Information (CSI) request field information.
3. The random access method of claim 1, wherein the control information further comprises a beta offset indication.
4. The random access method of claim 1, wherein the control information further comprises a Transport Block (TB) scaling factor.
5. The random access method of claim 1, wherein the control information is DCI1_ 0.
6. The random access method according to claim 1, wherein the length of the control information is identical to the length of the DCI1_ 0.
7. A random access apparatus, comprising:
the receiving module is suitable for receiving control information and determining indication information according to the control information, wherein the indication information is used for indicating that the random access is 2-step random access or 4-step random access;
the access module is suitable for initiating random access according to the control information;
wherein the indication information is the control information;
the receiving module includes:
and the access determining submodule is used for determining to adopt 2-step random access when the control information adopts the preset RNTI scrambling.
8. A storage medium having stored thereon computer instructions, wherein the computer instructions are operable to perform the steps of the random access method of any one of claims 1 to 6.
9. A user terminal comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor, when executing the computer instructions, performs the steps of the random access method of any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910072984.7A CN111294973B (en) | 2019-01-25 | 2019-01-25 | Random access method and device, storage medium and user terminal |
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| CN114258133A (en) * | 2020-09-22 | 2022-03-29 | 夏普株式会社 | Method performed by user equipment and user equipment |
| WO2022116099A1 (en) * | 2020-12-03 | 2022-06-09 | Oppo广东移动通信有限公司 | Trigger control method and apparatus for random access, and device and storage medium |
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