CN111436137A

CN111436137A - Random access method, device, equipment and medium

Info

Publication number: CN111436137A
Application number: CN201910108068.4A
Authority: CN
Inventors: 陈晓航; 孙鹏
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2019-02-02
Filing date: 2019-02-02
Publication date: 2020-07-21
Anticipated expiration: 2039-02-02
Also published as: WO2020156072A1; CN111436137B

Abstract

The embodiment of the invention discloses a random access method, a device, equipment and a medium. The random access method applied to the terminal equipment comprises the following steps: acquiring indication information of a random access process; and triggering a random access process according to the indication information, wherein the random access process comprises a two-step random access process or a four-step random access process. The random access method, the random access device, the random access equipment and the random access medium can trigger a random access process, and further perform random access according to the triggered random access process.

Description

Random access method, device, equipment and medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a random access method, apparatus, device, and medium.

Background

The random access process is a necessary process for establishing a wireless link between the terminal device and the network, and only after the random access is completed, the base station and the terminal device can normally perform conventional data transmission and data receiving interoperation. The terminal device can implement two basic functions through a random access procedure: and acquiring uplink synchronization with the base station and applying for uplink resources.

According to different service triggering modes, the random access process is divided into a Contention Based (CB) random access process and a non-Contention based random access process. The contention-based random access procedure includes two modes: a four-step random access procedure and a two-step random access procedure. The terminal device may perform random access through a four-step random access process or a two-step random access process, and the terminal device is not specified in the prior art until triggering the four-step random access process or triggering the two-step random access process.

Disclosure of Invention

The embodiment of the invention provides a random access method, a random access device, equipment and a medium, which are used for defining a triggered random access process.

In a first aspect, an embodiment of the present invention provides a random access method applied to a terminal device, where the method includes:

acquiring indication information of a random access process;

and triggering a random access process according to the indication information, wherein the random access process comprises a two-step random access process or a four-step random access process.

In a second aspect, an embodiment of the present invention provides a random access method applied to a network side device, where the method includes:

and sending indication information of a random access process to the terminal equipment, wherein the indication information is used for triggering the random access process, and the random access process comprises a two-step random access process or a four-step random access process.

In a third aspect, an embodiment of the present invention provides a random access apparatus applied to a terminal device, where the apparatus includes:

the acquisition module is used for acquiring the indication information of the random access process;

and the triggering module is used for triggering the random access process according to the indication information, wherein the random access process comprises a two-step random access process or a four-step random access process.

In a fourth aspect, an embodiment of the present invention provides a random access apparatus applied to a network side device, where the apparatus includes:

and the sending module is used for sending indication information of the random access process to the terminal equipment, wherein the indication information is used for triggering the random access process, and the random access process comprises a two-step random access process or a four-step random access process.

In a fifth aspect, an embodiment of the present invention provides a terminal device, where the terminal device includes a processor, a memory, and a computer program stored in the memory and operable on the processor, and when the computer program is executed by the processor, the steps of the random access method applied to the terminal device provided in the embodiment of the present invention are implemented.

In a sixth aspect, an embodiment of the present invention provides a network-side device, where the network-side device includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor, and when the computer program is executed by the processor, the steps of the random access method applied to the network-side device provided in the embodiment of the present invention are implemented.

In a seventh aspect, an embodiment of the present invention 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 the steps of the random access method applied to the terminal device or the random access method applied to the network-side device, which are provided in the embodiment of the present invention.

The random access method, the random access device, the random access equipment and the random access medium of the embodiment of the invention can trigger the random access process by triggering the random access process through the indication information, and further carry out random access according to the triggered random access process.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a flowchart illustrating a random access method according to an embodiment of the present invention;

fig. 2 is a schematic diagram illustrating a hardware structure of a terminal device according to an embodiment of the present invention;

fig. 3 shows a hardware structure diagram of a network-side device according to an embodiment of the present invention.

Detailed Description

Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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 … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

In order to solve the problem of the prior art, embodiments of the present invention provide a random access method, apparatus, device, and medium. First, the random access method provided in the embodiment of the present invention is explained in detail below.

The random access method applied to the terminal equipment provided by the embodiment of the invention can comprise the following steps: acquiring indication information of a random access process; and triggering a random access process according to the indication information, wherein the random access process comprises a two-step random access process or a four-step random access process. And further sending a random access message, wherein the random access message is a random access message MsgA corresponding to the two-step random access process or a four-step random access message Msg 1. Optionally, triggering the random access procedure comprises triggering a contention-based random access procedure.

The network side device provided in the embodiment of the present invention may be a base station, which may be a commonly used base station, an evolved node base (eNB), or a network side device in a 5G system (e.g., a next generation base station (gNB) or a network side device in a subsequent evolved communication system).

The Random Access message mentioned in the embodiments of the present invention may correspond to at least one of a Physical Random Access CHannel (PRACH) and a Physical Uplink Shared CHannel (PUSCH), that is: the random access message corresponds to PRACH; or, the random access message corresponds to the PUSCH; or, the random access message corresponds to PRACH and PUSCH.

In the two-step random access process, the random access message MsgA sent by the terminal device corresponds to the PRACH and the PUSCH, that is, the random access message MsgA is borne on the PRACH and the PUSCH.

Under the condition that the random access message corresponds to the PRACH and the PUSCH, a part of corresponding content in the random access message, such as a preamble, may be transmitted through the PRACH; another part of content corresponding to the random access message, such as a terminal device identifier or a cell radio network temporary identifier TC-RNTI, may be transmitted through the PUSCH.

In the embodiment of the invention, before sending the PUSCH corresponding to the random access message MsgA, the terminal equipment can acquire a PUSCH transmission opportunity for the terminal equipment to transmit the PUSCH. The PUSCH transmission opportunity may be obtained by pre-configuration of a network side device, and may include one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols.

The PUSCH transmission opportunity may also be associated with a PRACH transmission opportunity, specifically, one PUSCH transmission opportunity may be associated with one PRACH transmission opportunity, one PUSCH transmission opportunity may be associated with multiple PRACH transmission opportunities, multiple PUSCH transmission opportunities may be associated with one PRACH transmission opportunity, or multiple PUSCH transmission opportunities may be associated with multiple PRACH transmission opportunities, which is not specifically limited herein.

In the four-step random access process, the random access message Msg1 sent by the terminal device corresponds to PRACH, i.e. Msg1 is only carried on PRACH, or Msg1 only includes PRACH preamble.

In an embodiment of the present invention, after acquiring the indication information of the random access process, the terminal device may determine the random access process according to the indication information, and perform random access according to the determined random access process. Wherein, the random access process comprises a two-step random access process or a four-step random access process.

For example, if the indication information indicates that the random access procedure is a contention-based random access procedure, the terminal device performs random access in the contention-based random access procedure.

In an embodiment of the present invention, after acquiring the indication information of the random access process, the terminal device may determine the type of the random access process according to the indication information, and perform random access according to the determined type of the random access process.

For example, the indication information indicates a type of the random access procedure, i.e., two-step random access, and the terminal device performs random access based on the two-step random access procedure.

For another example, if the indication information indicates that the type of the random access procedure is four-step random access, the terminal device performs random access based on the four-step random access procedure.

For another example, if the indication information indicates that the type of the random access procedure is contention-based two-step random access, the terminal device performs random access based on the contention-based two-step random access procedure.

For another example, if the indication information indicates that the type of the random access procedure is contention-based four-step random access, the terminal device performs random access based on the contention-based four-step random access procedure.

In one embodiment of the invention, the indication information may be configured by signaling. The signaling may be a high layer signaling, and may also be configured for a Downlink Control signaling (e.g., Downlink Control Information (DCI)). The higher layer signaling includes cell-specific configuration signaling (such as a System Information Block (SIB), a Master Information Block (MIB)) or terminal-specific configuration Information (such as Radio Resource Control (RRC) Information). The DCI is used to trigger a random access procedure. Specifically, the Cyclic Redundancy Check (CRC) of the DCI is scrambled by the C-RNTI, and the DCI may also be referred to as a PDCCH order triggering RACH transmission.

For the random access procedure triggered by the PDCCH order, the indication information is used to indicate that the triggered random access procedure is a two-step random access procedure or a four-step random access procedure, or is used to indicate PRACH transmission opportunity (occasion)/Synchronization Signal Block (SSB)/PUSCH occasion. The indicated PRACHoccasion/SSB/PUSCH occase is used for sending a random access message corresponding to a random access process, and the random access message is a random access message MsgA corresponding to a two-step random access process or a random access message Msg1 corresponding to a four-step RACH.

In an embodiment of the present invention, the indication information may be configured by using at least one existing field of the signaling, and/or may be configured by using at least one newly added field of the signaling.

The following description will be given taking field arrangement indication information using DCI as an example.

The existing DCI for triggering the random access procedure includes the following fields:

an Identifier (Identifier), a Frequency domain resource allocation (Frequency domain resource), a Random Access Preamble index (Random Access Preamble index), an uplink carrier Frequency indicator (U L/SU L indicator), a synchronization signal/physical broadcast channel index (SS/PBCH index), and a physical Random Access channel Mask index (PRACH Mask index).

When indication information is configured using one existing field of DCI, it is assumed that indication information is configured using an SS/PBCH index field of DCI. The DCI is the above-mentioned DCI, i.e., PDCCH order. DCI contains the following fields:

·Identifier

·Frequency domain resource assignment

when the Frequency domain resource allocations are all 1, the DCI indicates a PDCCH order for triggering a random access procedure.

·Random Access Preamble index

When all the Random Access Preamble indexes are 0, the DCI triggers a contention-based Random Access procedure.

When the Random Access Preamble indexes are not all 0, the DCI triggers a non-contention based Random Access procedure.

·UL/SUL indicator

When all the Random Access Preamble indexes are 0, the field is a reserved field.

·SS/PBCH index

When the Random Access Preamble indexes are all 0, the SS/PBCH index is used to indicate a contention based Random Access procedure.

And if the SS/PBCH index is X, triggering a two-step random access process.

And if the SS/PBCH index is equal to Y, triggering a four-step random access process.

Wherein X and Y may be predefined or RRC configured. X and Y can be sets, and X ≠ Y.

·PRACH Mask index

In one embodiment of the present invention, when the Random Access Preamble indexes are all 0, the N highest bits (MSB) or the lowest bits (L eastsignifican Bit, L SB) of the SS/PBCH index are used to indicate the contention based Random Access procedure.

If N MSBs of SS/PBCH index or L SB ═ X, a two-step random access procedure is triggered.

And if the N MSBs of the SS/PBCH index or L SB is Y, triggering a four-step random access process.

Wherein N is not greater than the number of bits of the SS/PBCH index.

When indication information is configured using two existing fields of DCI, it is assumed that indication information is configured using U L/SU L indicator and SS/PBCH index fields of DCI, i.e., the aforementioned DCI, i.e., PDCCH order, DCI includes the following fields:

·Identifier

·Frequency domain resource assignment

·Random Access Preamble index

·UL/SUL indicator

When the Random Access Preamble indexes are all 0, U L/SU L indicator and SS/PBCKENdex are used to indicate a contention based Random Access procedure.

·SS/PBCH index

When the Random Access Preamble indexes are all 0, the SS/PBCH index and the U L/SU L indicator are used to indicate a contention-based Random Access procedure.

If the U L/SU L indicator is K and the SS/PBCH index is X, a two-step random access procedure is triggered.

And if the U L/SU L indicator is J and the SS/PBCH index is Y, triggering a four-step random access process.

Where K, J, X and Y may be predefined or RRC configured. K, J, X and Y can be a set, and K ≠ J, X ≠ Y.

·PRACH Mask index

When indication information is configured by using one new field of the DCI, it is assumed that the indication information is configured by using the new field 1 of the DCI. The DCI is the above-mentioned DCI, i.e., PDCCH order. The DCI contains the following fields:

·Identifier

·Frequency domain resource assignment

·Random Access Preamble index

·UL/SUL indicator

·SS/PBCH index

·PRACH Mask index

Newly added field 1

When all the Random Access Preamble indexes are 0, the new field 1 is used to indicate the contention-based Random Access procedure.

If the newly added field 1 is equal to X, a two-step random access process is triggered.

And if the newly added field 1 is equal to Y, triggering a four-step random access process.

In one embodiment of the invention, the newly added fields include one or more of the following fields:

a physical uplink shared channel transmission opportunity index field; a physical uplink shared channel time domain resource field; a physical uplink shared channel frequency domain resource field; a Modulation and Coding Scheme (MCS) field; a mapping field from Physical Resource Block to Virtual Resource Block (VRB-to-PRB mapping); a frequency domain frequency modulation identification field; a power control instruction field; a Channel State Information (CSI) request field.

The CSI request comprises a CSI reporting request or a CSI reporting request.

When the indication information is configured by using two newly added fields of the DCI, it is assumed that the indication information is configured by using the newly added field 1 and the newly added field 2 of the DCI. The DCI is the above-mentioned DCI, i.e., PDCCH order. DCI contains the following fields:

·Identifier

·Frequency domain resource assignment

·Random Access Preamble index

·UL/SUL indicator

·SS/PBCH index

·PRACH Mask index

Newly added field 1

When all the Random Access Preamble indexes are 0, the new addition field 1 and the new addition field 2 are used to indicate a contention-based Random Access procedure.

Newly added field 2

When all the Random Access Preamble indexes are 0, the new addition field 2 and the new addition field 1 are used to indicate a contention based Random Access procedure.

If the newly added field 1 is K and the newly added field 2 is X, a two-step random access procedure is triggered.

And if the newly added field 1 is J and the newly added field 2 is Y, triggering a four-step random access process.

When indication information is configured by using an existing field and a newly added field of the DCI, it is assumed that indication information is configured by using an existing field U L/SU L indicator and a newly added field 1 in the DCI, that is, the above-mentioned DCI, that is, the pdcchorder, the DCI includes the following fields:

·Identifier

·Frequency domain resource assignment

when the Frequency domain resource allocations are all 1, the DCI indicates one PDCCH order for triggering random access.

·Random Access Preamble index。

·UL/SUL indicator

When the Random Access Preamble indexes are all 0, the U L/SU L indicator and the new field 1 indicate that a contention-based Random Access procedure is determined.

·SS/PBCH index

·PRACH Mask index

Newly added field 1

When the Random Access Preamble indexes are all 0, the newly added field 1 and the U L/SU L indicator are used to indicate a contention-based Random Access procedure.

If the U L/SU L indicator is K and the new added field 1 is X, a two-step random access procedure is triggered.

If the U L/SU L indicator is J and the newly added field 1 is Y, then a four-step random access procedure is triggered.

After the terminal device determines the contention based random access procedure according to the indication information, the terminal device may perform random access according to the determined contention based random access procedure.

In one embodiment of the present invention, the indication information may include: and parameter information corresponding to the random access process.

In one embodiment of the invention, the parameter information comprises one or more of the following:

PUSCH transmission opportunity index (index); PUSCH time domain resources; PUSCH frequency domain resources; MCS; VRB-to-PRBmapping; frequency domain frequency modulation identification; a power control command; and (4) requesting CSI.

In an embodiment of the present invention, parameter information may be configured using at least one existing field and/or at least one newly added field of higher layer signaling or downlink control signaling.

Exemplarily, when one existing field configuration indication information of the DCI is adopted and one parameter information is configured by adopting one existing field in the DCI, it is assumed that the PUSCH transmission opportunity index is configured by adopting the PRACH Mask index field in the DCI by adopting the SS/PBCH index field configuration indication information of the DCI. The DCI is the aforementioned DCI, i.e., PDCCHorder. DCI contains the following fields:

·Identifier

·Frequency domain resource assignment

when the Frequency domain resource allocations are all 1, the DCI indicates a PDCCH order for triggering random access.

·Random Access Preamble index

·UL/SUL indicator

·SS/PBCH index

And if the SS/PBCH index is X, triggering a two-step random access process.

·PRACH Mask index

When the Random Access Preamble indexes are all 0 and SS/PBCH index is X, the prachmark index is used to indicate the PUSCH transmission opportunity index.

In one embodiment of the present invention, the PUSCH transmission opportunity index may be indicated with N MSBs of the PRACH Mask index or L SB.

For another example, when one existing field configuration indication information, one existing field configuration parameter information, and another existing field configuration another parameter information in the DCI are used, it is assumed that the U L/SU L indicator field configuration indication information of the DCI is used, the PRACH Mask index field of the DCI is used to configure the PUSCH transmission opportunity index, and the SS/PBCH index field of the DCI is used to configure the PUSCH time domain resource.

·Identifier

·Frequency domain resource assignment

·Random Access Preamble index

When all the Random Access Preamble indexes are 0, the DCI triggers contention-based Random Access.

When the Random Access Preamble indexes are not all 0, the DCI triggers a non-contention based Random Access.

·UL/SUL indicator

When the Random Access Preamble indexes are all 0, the U L/SU L indicator is used to indicate a contention-based Random Access procedure.

If the U L/SU L indicator is X, a two-step random access procedure is triggered.

And if the U L/SU L indicator is Y, triggering a four-step random access process.

·SS/PBCH index

When the Random Access Preamble indexes are all 0 and the U L/SU L indicator is X, the SS/PBCH index is used to indicate the PUSCH time domain resource.

In one embodiment of the invention, the PUSCH time domain resource can be indicated by adopting N MSBs of the SS/PBCH index or L SB, wherein N is not more than the bit number of the SS/PBCH index.

·PRACH Mask index

When the Random Access Preamble indexes are all 0 and the U L/SU L indicator is X, the PRACH Mask index is used to indicate the PUSCH transmission opportunity index.

In one embodiment of the present invention, the PUSCH transmission opportunity index may be indicated with M MSBs of the PRACH Mask index or L SB.

For another example, when indication information is configured in one existing field of DCI, and two pieces of parameter information are configured in one existing field of DCI at the same time, it is assumed that indication information is configured in a U L/SU L indicator field of DCI, and a PRACH Mask index field of DCI is used to configure a PUSCH transmission opportunity index and a PUSCH time domain resource.

·Identifier

·Frequency domain resource assignment

·Random Access Preamble index

·UL/SUL indicator

·SS/PBCH index

·PRACH Mask index

When the Random Access Preamble indexes are all 0 and the U L/SU L indicator is X, the PRACH Mask index is used to indicate the PUSCH transmission opportunity index and the PUSCH time domain resource.

Assuming that the number of bits occupied by the PUSCH transmission opportunity index is M, and the number of bits occupied by the PUSCH time domain resource is N, then M + N is not greater than the number of bits of the PRACH Mask index.

Specifically, the bit of the PRACH Mask index occupied by the PUSCH transmission opportunity index is M MSBs of the PRACH Mask index, that is, the M MSBs of the PRACH Mask index are used to indicate the PUSCH transmission opportunity index, and the bit of the PRACH Mask index occupied by the PUSCH time domain resource is N L SBs of the PRACH Mask index, that is, N L SBs of the PRACH Mask index are used to indicate the PUSCH time domain resource.

Similarly, it can be exchanged that M L SBs are used to indicate PUSCH transmission opportunity index and N MSBs are used to indicate PUSCH time domain resources.

Or, the PUSCH transmission opportunity index and the bits of the PUSCH time domain resource are M + N MSBs of the PRACH Mask index, where 1 st to M MSBs indicate the PUSCH transmission opportunity index, and M +1 th to M + N MSBs indicate the PUSCH time domain resource.

Or, the PUSCH transmission opportunity index and the bits of the PUSCH time domain resource are M + N L SBs of the PRACH Mask index, where 1 st to M L th SBs indicate the PUSCH transmission opportunity index, and M +1 st to M + N L th MSBs indicate the PUSCH time domain resource.

It should be noted that, the above description is given by taking an example that one existing field configures the PUSCH transmission opportunity index and the PUSCH time domain resource at the same time, and is only a specific example of the present invention, and does not limit the present invention. In one embodiment of the present invention, one existing field may be configured with three parameter information, four parameter information, or even more parameter information at the same time. For example, one existing field configures the PUSCH transmission opportunity index, the PUSCH time domain resource, and the MCS at the same time. For another example, one existing field configures the PUSCH transmission opportunity index, the PUSCH time domain resource, the MCS, and the PRB mapping at the same time. For another example, one existing field configures the PUSCH time domain resource, MCS, and PRB mapping at the same time. For another example, one existing field configures the PUSCH time domain resource, MCS, VRB-to-PRB mapping, and frequency domain fm id at the same time.

For another example, when an existing field of the DCI is used to configure the indication information and a new field is used to configure a parameter information, it is assumed that the SS/PBCH index field of the DCI is used to configure the indication information and the new field 1 of the DCI is used to configure the PUSCH transmission opportunity index. The DCI is the above-mentioned DCI, i.e., PDCCH order. DCI contains the following fields:

·Identifier

·Frequency domain resource assignment

·Random Access Preamble index

·UL/SUL indicator

·SS/PBCH index

And if the SS/PBCH index is X, triggering a two-step random access process.

·PRACH Mask index

Newly added field 1

When the Random Access Preamble indexes are all 0 and the SS/PBCH index is X, the new field 1 is used to indicate the PUSCH transmission opportunity index.

In one embodiment of the present invention, the PUSCH transmission opportunity index may be indicated with N MSBs of the addition field 1 or L SB, where N is not greater than the number of bits of the addition field 1.

For another example, when an existing field of the DCI is used to configure indication information, a newly added field of the DCI is used to configure a parameter information, and another newly added field of the DCI is used to configure another parameter information, it is assumed that U L/SU L indicator field of the DCI is used to configure indication information, a newly added field 1 of the DCI is used to configure a PUSCH transmission opportunity index, and a newly added field 2 is used to configure a PUSCH time domain resource.

·Identifier

·Frequency domain resource assignment

·Random Access Preamble index

·UL/SUL indicator

·SS/PBCH index

PRACH Mask index

Newly added field 1

When the Random Access Preamble indexes are all 0 and U L/SU L indicator ═ X, the new field 1 is used to indicate the PUSCH transmission opportunity index.

In one embodiment of the present invention, the PUSCH transmission opportunity index may be indicated with M MSBs of the addition field 1 or L SB, where M is not greater than the number of bits of the addition field 1.

Newly added field 2

When the Random Access Preamble indexes are all 0 and U L/SU L indicator ═ X, the new field 2 is used to indicate PUSCH time domain resources.

In one embodiment of the invention, the PUSCH time domain resource can be indicated by adopting N MSBs of the newly added field 2 or L SB, wherein N is not more than the bit number of the newly added field 2.

For another example, when an existing field of the DCI is used to configure indication information, and a newly added field of the DCI is used to configure two parameter information simultaneously, it is assumed that a U L/SU L indicator field of the DCI is used to configure indication information, and a newly added field 1 of the DCI is used to configure a PUSCH transmission opportunity index and a PUSCH time domain resource.

·Identifier

·Frequency domain resource assignment

·Random Access Preamble index

·UL/SUL indicator

·SS/PBCH index

·PRACH Mask index

Newly added field 1

When the Random Access Preamble indexes are all 0 and U L/SU L indicator ═ X, the new field 1 is used to indicate the PUSCH transmission opportunity index and the PUSCH time domain resource.

Assuming that the bit number of the newly added field 1 occupied by the PUSCH transmission opportunity index is M, and the bit number of the newly added field 1 occupied by the PUSCH time domain resource is N, M + N is not greater than the bit number of the newly added field 1.

Specifically, the bit of the newly added field 1 occupied by the PUSCH transmission opportunity index is M MSBs of the newly added field 1, that is, the M MSBs of the newly added field 1 are used for indicating the PUSCH transmission opportunity index, and the bit of the newly added field 1 occupied by the PUSCH time domain resource is N L SBs of the newly added field 1, that is, N L SBs of the newly added field 1 are used for indicating the PUSCH time domain resource.

Or, the PUSCH transmission opportunity index and the bits of the PUSCH time domain resource are M + N MSBs of the new field 1, where 1 to M MSBs indicate the PUSCH transmission opportunity index, and M +1 to M + N MSBs indicate the PUSCH time domain resource.

Or, the PUSCH transmission opportunity index and the bits of the PUSCH time domain resource are M + N L SBs of the new field 1, where the 1 st to M-th L SBs indicate the PUSCH transmission opportunity index, and the M +1 st to M + N L SBs indicate the PUSCH time domain resource.

It should be noted that, the above description is given by taking an example that one newly added field 1 configures the PUSCH transmission opportunity index and the PUSCH time domain resource at the same time, and is only a specific example of the present invention, and does not limit the present invention. In an embodiment of the present invention, a newly added field may simultaneously configure three parameter information, four parameter information, or even more parameter information. For example, a new field configures the PUSCH transmission opportunity index, the PUSCH time domain resource, and the MCS at the same time. For another example, a newly added field configures the PUSCH transmission opportunity index, the PUSCH time domain resource, the MCS, and the PRB mapping at the same time. For another example, a newly added field configures the PUSCH time domain resource, MCS, and PRB mapping at the same time. For another example, a newly added field configures the PUSCH time domain resource, MCS, VRB-to-PRB mapping, and frequency domain fm identifier at the same time.

For another example, when indication information is configured in one existing field of DCI, one parameter information is configured in one existing field of DCI, and another parameter information is configured in one newly added field of DCI, it is assumed that indication information is configured in a U L/SU L indicator field of DCI, a PUSCH transmission opportunity index is configured in a PRACH Mask index field of DCI, and a PUSCH time domain resource is configured in a newly added field 1 of DCI, where the DCI is the aforementioned DCI, that is, pdcch order.

·Identifier

·Frequency domain resource assignment

·Random Access Preamble index

·UL/SUL indicator

·SS/PBCH index

·PRACH Mask index

Newly added field 1

When the Random Access Preamble indexes are all 0 and U L/SU L indicator ═ X, the new field 1 is used to indicate PUSCH time domain resources.

In one embodiment of the invention, the PUSCH time domain resource can be indicated by adopting N MSBs of the newly added field 1 or L SB, wherein N is not more than the bit number of the newly added field 1.

It should be noted that, the above description is given by taking an example that one newly added field configures one parameter information and one existing field configures another parameter information, which is only a specific example of the present invention and does not limit the present invention. In an embodiment of the present invention, a newly added field may configure multiple pieces of parameter information at the same time, and an existing field may also configure multiple pieces of parameter information at the same time. For example, an existing field configures the PUSCH transmission opportunity index and the PUSCH time domain resource, and a newly added field configures the MCS, the VRB-to-PRB mapping, and the frequency domain fm identifier.

Based on the above, when one field of DCI is used to configure only one parameter information, the parameter information may be indicated using M MSBs or L SB of the field.

When one field of the DCI is used for configuring a plurality of parameter information, the sum of the bit numbers of the field occupied by the plurality of parameter information is not more than the bit number of the field.

In addition, the embodiment of the present invention does not limit the order in which the field is configured with the plurality of parameter information, and any available order may be applied to the embodiment of the present invention.

In one embodiment of the present invention, when one field of the DCI is used to configure multiple pieces of parameter information, the sum of the number of bits of the field occupied by the multiple pieces of parameter information is also greater than the number of bits of the field.

For example, it is assumed that the PRACH Mask index of DCI is used to configure the PUSCH transmission opportunity index, the PUSCH time domain resource, the MCS, the VRB-to-PRB mapping, and the TB scaling.

Assuming that the PRACH Mask index field has 6 bits, where the highest two bits of the PRACH Mask index field are used to indicate a PUSCH transmission opportunity index, the highest three bits of the PRACH Mask index field are used to indicate PUSCH time-domain resources, the highest four bits of the PRACH Mask index field are used to indicate MCS, the highest five bits of the PRACH Mask index field are used to indicate VRB-to-PRB mapping, and the lowest four bits of the PRACH Mask index field are used to indicate TB scaling. The number of bits occupied by each parameter information of the MsgA PUSCH is 2+3+4+5+ 4-18 bits. At this time, the bit number occupied by each parameter information of the MsgA PUSCH is greater than the bit number of the PRACH Mask index field.

The embodiment of the invention also provides a random access method applied to the network side equipment. The random access method applied to the network side equipment can comprise the following steps:

In one embodiment of the invention, the indication information comprises: and parameter information corresponding to the random access process.

a physical uplink shared channel transmission opportunity index;

physical uplink shared channel time domain resources;

physical uplink shared channel frequency domain resources;

a modulation and coding strategy;

mapping physical resource blocks to virtual resource blocks;

frequency domain frequency modulation identification;

a power control command;

a channel state information request.

In one embodiment of the present invention, the indication information is configured by signaling, and the signaling includes higher layer signaling or downlink control signaling.

In an embodiment of the present invention, the indication information is configured by using at least one existing field of the signaling, and/or the indication information is configured by using at least one newly added field of the signaling.

When the terminal equipment receives the indication information sent by the network side equipment, the random access process is triggered according to the indication information, and then random access is carried out according to the triggered random access process.

In an embodiment of the present invention, the network side device may send instruction information for determining a random access procedure to the terminal device, and after receiving the instruction information, the terminal device determines the random access procedure according to the instruction information, and performs random access according to the determined random access procedure. The random access procedure includes a four-step random access procedure or a two-step random access procedure.

In an embodiment of the present invention, the network side device may send, to the terminal device, indication information for determining a type of a random access procedure, and after receiving the indication information, the terminal device may determine the type of the random access procedure according to the indication information, and perform random access according to the determined type of the random access procedure.

Based on the above, a random access method provided by the embodiment of the present invention is shown in fig. 1. Fig. 1 shows a flowchart of a method for providing random access according to an embodiment of the present invention. The random access method may include:

s101: and the network side equipment sends indication information for triggering the random access process to the terminal equipment.

S102: and the terminal equipment triggers a random access process according to the indication information.

The random access procedure includes a two-step random access procedure or a four-step random access procedure.

a physical uplink shared channel transmission opportunity index;

physical uplink shared channel time domain resources;

physical uplink shared channel frequency domain resources;

a modulation and coding strategy;

mapping physical resource blocks to virtual resource blocks;

frequency domain frequency modulation identification;

a power control command;

a channel state information request.

The embodiment of the invention also provides a random access device applied to the terminal equipment. The random access apparatus applied to the terminal device may include:

and the acquisition module is used for acquiring the indication information of the random access process.

a physical uplink shared channel transmission opportunity index;

physical uplink shared channel time domain resources;

physical uplink shared channel frequency domain resources;

a modulation and coding strategy;

mapping physical resource blocks to virtual resource blocks;

frequency domain frequency modulation identification;

a power control command;

a channel state information request.

In one embodiment of the present invention, a random access apparatus applied to a terminal device may include:

an obtaining module, configured to obtain indication information for determining a random access procedure.

And the determining module is used for determining a random access process according to the indication information, wherein the random access process comprises a two-step random access process or a four-step random access process.

After the terminal device obtains the indication information, a random access process can be determined according to the indication information, and random access is performed according to the determined random access process.

an obtaining module, configured to obtain indication information used for determining a type of a random access procedure.

And the determining module is used for determining the type of the random access process according to the indication information.

After the terminal device obtains the indication information, the type of the random access process can be determined according to the indication information, and random access is performed according to the determined type of the random access process.

The embodiment of the invention also provides a random access device applied to the network side equipment. The random access apparatus applied to the network side device may include:

In one embodiment of the invention, the indication information comprises: and parameter information corresponding to the target random access process.

a physical uplink shared channel transmission opportunity index;

physical uplink shared channel time domain resources;

physical uplink shared channel frequency domain resources;

a modulation and coding strategy;

mapping physical resource blocks to virtual resource blocks;

frequency domain frequency modulation identification;

a power control command;

a channel state information request.

In an embodiment of the present invention, a random access apparatus applied to a network side device may include:

and the sending module is used for sending indication information for determining a random access process to the terminal equipment, wherein the random access process comprises a two-step random access process or a four-step random access process.

The network side device may send indication information for determining a random access process to the terminal device, and after receiving the indication information, the terminal device determines the random access process according to the indication information and performs random access according to the determined random access process.

a sending module, configured to send, to a terminal device, indication information for determining a type of a random access procedure, where the random access procedure includes a two-step random access procedure or a four-step random access procedure.

Fig. 2 shows a schematic diagram of a hardware structure of a terminal device according to an embodiment of the present invention. The terminal device 200 includes but is not limited to: radio frequency unit 201, network module 202, audio output unit 203, input unit 204, sensor 205, display unit 206, user input unit 207, interface unit 208, memory 209, processor 210, and power supply 211. Those skilled in the art will appreciate that the terminal device configuration shown in fig. 2 does not constitute a limitation of the terminal device, and that the terminal device may include more or less components than those shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the terminal device includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

A processor 210, configured to obtain indication information of a random access procedure; and triggering a random access process according to the indication information.

The process of triggering the random access procedure by the processor 210 is substantially the same as the process of triggering the random access procedure by the terminal device in the foregoing method embodiment, and reference may be specifically made to the description in the foregoing method embodiment. The embodiments of the present invention are not described herein in detail.

By the embodiment of the invention, the random access process can be triggered, and random access is carried out according to the triggered random access process.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 201 may be used for receiving and sending signals during a message transmission and reception process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 210; in addition, the uplink data is transmitted to the base station. In general, radio frequency unit 201 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 201 can also communicate with a network and other devices through a wireless communication system.

The terminal device provides the user with wireless broadband internet access through the network module 202, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.

The audio output unit 203 may convert audio data received by the radio frequency unit 201 or the network module 202 or stored in the memory 209 into an audio signal and output as sound. Also, the audio output unit 203 may also provide audio output related to a specific function performed by the terminal device 200 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 203 includes a speaker, a buzzer, a receiver, and the like.

The input unit 204 is used to receive an audio or video signal. The input Unit 204 may include a Graphics Processing Unit (GPU) 2041 and a microphone 2042, and the Graphics processor 2041 processes image data of a still picture or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 206. The image frames processed by the graphic processor 2041 may be stored in the memory 209 (or other storage medium) or transmitted via the radio frequency unit 201 or the network module 202. The microphone 2042 may receive sound and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 201 in case of a phone call mode.

The terminal device 200 further comprises at least one sensor 205, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that adjusts the brightness of the display panel 2061 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 2061 and/or backlights when the terminal apparatus 200 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal device posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 205 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.

The Display unit 206 may include a Display panel 2061, and the Display panel 2061 may be configured in the form of a liquid Crystal Display (L acquired Crystal Display, L CD), an Organic light-Emitting Diode (O L ED), or the like.

The user input unit 207 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal device. Specifically, the user input unit 207 includes a touch panel 2071 and other input devices 2072. Touch panel 2071, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 2071 (e.g., operations by a user on or near touch panel 2071 using any suitable object or accessory such as a finger, a stylus, etc.). The touch panel 2071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 210, and receives and executes commands sent by the processor 210. In addition, the touch panel 2071 may be implemented by using various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The user input unit 207 may include other input devices 2072 in addition to the touch panel 2071. In particular, the other input devices 2072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

Further, a touch panel 2071 may be overlaid on the display panel 2061, and when the touch panel 2071 detects a touch operation on or near the touch panel 2071, the touch panel is transmitted to the processor 210 to determine the type of the touch event, and then the processor 210 provides a corresponding visual output on the display panel 2061 according to the type of the touch event. Although the touch panel 2071 and the display panel 2061 are shown as two separate components in fig. 2 to implement the input and output functions of the terminal device, in some embodiments, the touch panel 2071 and the display panel 2061 may be integrated to implement the input and output functions of the terminal device, and this is not limited herein.

The interface unit 208 is an interface for connecting an external device to the terminal apparatus 200. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 208 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the terminal apparatus 200 or may be used to transmit data between the terminal apparatus 200 and the external device.

The memory 209 may be used to store software programs as well as various data. The memory 209 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 209 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 210 is a control center of the terminal device, connects various parts of the entire terminal device by using various interfaces and lines, and performs various functions of the terminal device and processes data by running or executing software programs and/or modules stored in the memory 209 and calling data stored in the memory 209, thereby performing overall monitoring of the terminal device. Processor 210 may include one or more processing units; preferably, the processor 210 may integrate an application processor and a modem processor, wherein the application processor mainly handles operating systems, user interfaces, application programs, and the like, and the modem processor mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 210.

Terminal device 200 may also include a power source 211 (e.g., a battery) for powering the various components, and preferably, power source 211 may be logically coupled to processor 210 via a power management system to manage charging, discharging, and power consumption management functions via the power management system.

In addition, the terminal device 200 includes some functional modules that are not shown, and are not described in detail here.

Preferably, an embodiment of the present invention further provides a terminal device, including a processor 210, a memory 209, and a computer program stored in the memory 209 and capable of running on the processor 210, where the computer program, when executed by the processor 210, implements each process of the foregoing random access method embodiment applied to the terminal device, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.

Fig. 3 shows a hardware structure diagram of a network-side device according to an embodiment of the present invention. The network side device includes: memory 301, processor 302, transceiver 303, and computer programs stored on memory 301 and executable on processor 302.

Among other things, processor 302 may be configured to: and sending indication information of the random access process to the terminal equipment, wherein the indication information is used for triggering the random access process.

Wherein in fig. 3, the bus architecture may include any number of interconnected buses and bridges with various circuits being linked together, particularly one or more processors represented by processor 302 and memory represented by memory 301. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 303 may be a number of elements including a transmitter and a transceiver, and provides a means for communicating with various other apparatus over a transmission medium for receiving and transmitting data under the control of the processor 302. The processor 302 is responsible for managing the bus architecture and the general processing, and the memory 301 may store data used by the processor 302 in performing operations.

Preferably, an embodiment of the present invention further provides a network-side device, which includes a processor 302, a memory 301, and a computer program that is stored in the memory 301 and can be run on the processor 302, and when the computer program is executed by the processor 302, the computer program implements each process of the random access method embodiment applied to the network-side device, and can achieve the same technical effect, and in order to avoid repetition, details are not described here.

Embodiments of the present invention also provide a computer-readable storage medium having computer program instructions stored thereon; the computer program instructions, when executed by the processor, implement the processes of the random access method embodiment applied to the terminal device or the processes of the random access method embodiment applied to the network side device provided in the embodiments of the present invention, and can achieve the same technical effects, and are not described herein again to avoid repetition. 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 embodiment. 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.

Claims

1. A random access method, the method comprising:

acquiring indication information of a random access process;

2. The method of claim 1, wherein the indication information comprises:

and parameter information corresponding to the random access process.

3. The method of claim 2, wherein the parameter information comprises one or more of the following:

a physical uplink shared channel transmission opportunity index;

physical uplink shared channel time domain resources;

physical uplink shared channel frequency domain resources;

a modulation and coding strategy;

mapping physical resource blocks to virtual resource blocks;

frequency domain frequency modulation identification;

a power control command;

a channel state information request.

4. The method of claim 1, wherein the indication information is configured by signaling, and wherein the signaling comprises higher layer signaling or downlink control signaling.

5. The method according to claim 4, wherein the indication information is configured using at least one existing field of the signaling, and/or wherein the indication information is configured using at least one newly added field of the signaling.

6. A random access method, the method comprising:

7. The method of claim 6, wherein the indication information comprises:

and parameter information corresponding to the random access process.

8. The method of claim 7, wherein the parameter information comprises one or more of the following:

a physical uplink shared channel transmission opportunity index;

physical uplink shared channel time domain resources;

physical uplink shared channel frequency domain resources;

a modulation and coding strategy;

mapping physical resource blocks to virtual resource blocks;

frequency domain frequency modulation identification;

a power control command;

a channel state information request.

9. The method of claim 6, wherein the indication information is configured by signaling, and wherein the signaling comprises higher layer signaling or downlink control signaling.

10. The method according to claim 9, wherein the indication information is configured using at least one existing field of the signaling, and/or wherein the indication information is configured using at least one newly added field of the signaling.

11. A random access apparatus, the apparatus comprising:

and the triggering module is used for triggering a random access process according to the indication information, wherein the random access process comprises a two-step random access process or a four-step random access process.

12. The apparatus of claim 11, wherein the indication information comprises:

and parameter information corresponding to the random access process.

13. The apparatus of claim 12, wherein the parameter information comprises one or more of:

a physical uplink shared channel transmission opportunity index;

physical uplink shared channel time domain resources;

physical uplink shared channel frequency domain resources;

a modulation and coding strategy;

mapping physical resource blocks to virtual resource blocks;

frequency domain frequency modulation identification;

a power control command;

a channel state information request.

14. The apparatus of claim 11, wherein the indication information is configured by signaling, and wherein the signaling comprises higher layer signaling or downlink control signaling.

15. The apparatus according to claim 14, wherein the indication information is configured using at least one existing field of the signaling, and/or wherein the indication information is configured using at least one newly added field of the signaling.

16. A random access apparatus, the apparatus comprising:

the device comprises a sending module and a random access module, wherein the sending module is used for sending indication information of a random access process to terminal equipment, the indication information is used for triggering the random access process, and the random access process comprises a two-step random access process or a four-step random access process.

17. The apparatus of claim 16, wherein the indication information comprises:

and parameter information corresponding to the random access process.

18. The apparatus of claim 17, wherein the parameter information comprises one or more of the following:

a physical uplink shared channel transmission opportunity index;

physical uplink shared channel time domain resources;

physical uplink shared channel frequency domain resources;

a modulation and coding strategy;

mapping physical resource blocks to virtual resource blocks;

frequency domain frequency modulation identification;

a power control command;

a channel state information request.

19. The apparatus of claim 16, wherein the indication information is configured by signaling, and wherein the signaling comprises higher layer signaling or downlink control signaling.

20. The apparatus according to claim 19, wherein the indication information is configured using at least one existing field of the signaling, and/or wherein the indication information is configured using at least one newly added field of the signaling.

21. A terminal device, characterized in that the terminal device comprises a processor, a memory and a computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, realizes the steps of the random access method according to any one of claims 1 to 5.

22. A network side device, characterized in that the network side device comprises a processor, a memory and a computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, implements the steps of the random access method according to any one of claims 6 to 10.

23. 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, realizes the steps of the random access method according to any one of claims 1 to 5 or the random access method according to any one of claims 6 to 10.