CN115315016A

CN115315016A - Msg1 transmission resource determination method, terminal and network side equipment

Info

Publication number: CN115315016A
Application number: CN202110496109.9A
Authority: CN
Inventors: 杨坤; 吴凯
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-05-07
Filing date: 2021-05-07
Publication date: 2022-11-08

Abstract

The application discloses a method, a terminal and a network side device for determining Msg1 transmission resources, which belong to the technical field of wireless communication, and the method for determining the Msg1 transmission resources comprises the following steps: the terminal determines the sending parameters of the Msg1 of a random access process of Msg3PUSCH repeated transmission, wherein the sending parameters comprise RACH opportunity and a preamble, and the sending parameters meet one of the following conditions: using the same RACH occasion as 4-step RACH, a different preamble; using a different RACH occasion than 4-step RACH; and the terminal sends the Msg1 of the random access process of the repeated transmission of the Msg3PUSCH according to the sending parameters.

Description

Msg1 transmission resource determination method, terminal and network side equipment

Technical Field

The application belongs to the technical field of wireless communication, and particularly relates to a determination method of Msg1 transmission resources, a terminal and network side equipment.

Background

In the Rel-15/16 New Radio (NR) system, the transmission of message 3 (Msg 3) in the random access procedure is specified as a single transmission. Since the terminal can only transmit according to a Synchronization Signal and PBCH block (SSB) beam during the initial access phase, the SSB beam is a cell-level beam and the SSB beam gain is smaller than that of a user-level beam. This results in relatively poor coverage performance of the Msg3 Physical Uplink Shared Channel (PUSCH) compared to other channels, which affects the success rate of random access. Especially for cell edge users or users in a coverage hole region, the performance bottleneck of the Msg3PUSCH can seriously affect the success rate of such users accessing the cell. The Rel-17 NR system supports a mode of Msg3PUSCH repeat (repeat) transmission to improve the success rate of random access of the users.

The random access procedure supporting the Msg3PUSCH repeated transmission needs to follow the existing Msg1 sending procedure, minimizing the impact on Msg1. In addition, the Rel-16 NR system further defines a 2-step (2-step) Random Access Channel (RACH) flow and a corresponding MsgA Physical Random Access Channel (PRACH) configuration scheme; in addition, other Small Data Transmission (SDT) in question in the Rel-17 NR system also needs to occupy a part of PRACH resources to implement the request of SDT. Therefore, how to allocate the limited PRACH resource to multiple features or functions (4-step RACH,2-step RACH, SDT, msgA PUSCH repetition request) supported by the terminal is a technical problem to be solved.

Disclosure of Invention

The embodiment of the application provides a method for determining Msg1 transmission resources, a terminal and a network side device, which can solve the problem of how to allocate limited PRACH resources to multiple features or functions supported by the terminal.

In a first aspect, a method for determining Msg1 transmission resources is provided, including:

the terminal determines the sending parameters of the Msg1 of a random access process of Msg3PUSCH repeated transmission, wherein the sending parameters comprise RACH opportunity and a preamble, and the sending parameters meet one of the following conditions:

using the same RACH occasion as 4-step RACH, a different preamble;

using a different RACH occasion than 4-step RACH;

and the terminal sends the Msg1 of the random access process of the repeated transmission of the Msg3PUSCH according to the sending parameters.

In a second aspect, a method for determining Msg1 transmission resources is provided, including:

the method comprises the steps that network side equipment receives Msg1 sent by a terminal;

if the sending parameter of the Msg1 meets one of the following conditions, the network side device determines that the Msg1 is Msg1 of a random access flow of Msg3PUSCH repeated transmission:

using the same RACH occasion as 4-step RACH, a different preamble;

a different RACH occasion is used than 4-step RACH.

In a third aspect, a device for determining Msg1 transmission resources is provided, including:

a determining module, configured to determine a sending parameter of Msg1 of a random access procedure of Msg3PUSCH repeated transmission, where the sending parameter includes a RACH occasion and a preamble, and the sending parameter satisfies one of the following conditions:

using the same RACH occasion as 4-step RACH, a different preamble;

using a different RACH occasion than 4-step RACH;

and the sending module is used for sending the Msg1 of the random access process of the repeated transmission of the Msg3PUSCH according to the sending parameters.

In a fourth aspect, a device for determining Msg1 transmission resources is provided, including:

the receiving module is used for receiving the Msg1 sent by the terminal;

a determining module, configured to determine that the Msg1 is Msg1 of a random access procedure of Msg3PUSCH repeated transmission if the sending parameter of the Msg1 satisfies one of the following conditions:

using the same RACH occasion as 4-step RACH, a different preamble;

a different RACH occasion is used than 4-step RACH.

In a fifth aspect, there is provided a terminal comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, which when executed by the processor, performs the steps of the method according to the first aspect.

In a sixth aspect, a terminal is provided, which includes a processor and a communication interface, wherein:

the processor is configured to determine a transmission parameter of Msg1 of a random access procedure of Msg3PUSCH repeated transmission, where the transmission parameter includes a RACH occasion and a preamble, and the transmission parameter satisfies one of the following conditions:

using the same RACH occasion as 4-step RACH, a different preamble;

using a different RACH occasion than 4-step RACH;

and the communication interface is used for sending the Msg1 of the random access process of the Msg3PUSCH repeated transmission according to the sending parameters.

In a seventh aspect, a network-side device is provided, which includes a processor, a memory, and a program or an instruction stored on the memory and executable on the processor, and when executed by the processor, the program or the instruction implements the steps of the method according to the second aspect.

In an eighth aspect, a network side device is provided, which includes a processor and a communication interface, where:

the communication interface is used for receiving the Msg1 sent by the terminal;

the processor is configured to determine that the Msg1 is Msg1 of a random access procedure of Msg3PUSCH repeated transmission if the sending parameter of the Msg1 satisfies one of the following conditions:

using the same RACH occasion as 4-step RACH, a different preamble;

a different RACH occasion is used than 4-step RACH.

In a ninth aspect, there is provided a readable storage medium on which is stored a program or instructions which, when executed by a processor, carries out the steps of the method of the first aspect or the steps of the method of the second aspect.

In a tenth aspect, a chip is provided, the chip comprising a processor and a communication interface, the communication interface being coupled to the processor, the processor being configured to execute a program or instructions to implement the method according to the first aspect, or to implement the method according to the second aspect.

In an eleventh aspect, there is provided a computer program/program product stored in a non-volatile storage medium, the program/program product being executable by at least one processor to implement the steps of the method according to the first aspect, or the program/program product being executable by at least one processor to implement the steps of the method according to the second aspect.

In the embodiment of the application, a method for determining the Msg1 transmission resources of the random access process of the Msg3PUSCH repeated transmission is defined, and the purpose that the network side equipment and the terminal can accurately determine the PRACH resources is ensured.

Drawings

Fig. 1 is a block diagram of a wireless communication system to which embodiments of the present application are applicable;

FIG. 2 is a schematic flow chart of 4-step RACH and 2-step RACH;

fig. 3 is a diagram of a preamble index set in one RACH occasion;

fig. 4 is a flowchart illustrating a method for determining Msg1 transmission resources performed by a terminal according to an embodiment of the present application;

fig. 5 is a schematic flowchart of a method for determining Msg1 transmission resources, which is executed by a network-side device according to an embodiment of the present application;

fig. 6 and fig. 7 are schematic diagrams illustrating division of a preamble when Msg1 and 4-step RACH share RO in a random access procedure of Msg3PUSCH retransmission;

fig. 8 is a schematic diagram illustrating division of a preamble when Msg1 and 2-step RACH share RO in a random access procedure of Msg3PUSCH repeated transmission;

fig. 9 is a schematic structural diagram of an Msg1 transmission resource determining apparatus according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a Msg1 transmission resource determining apparatus according to another embodiment of the present application;

fig. 11 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 12 is a schematic hardware structure diagram of a terminal according to an embodiment of the present application;

fig. 13 is a schematic hardware structure diagram of a network-side device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below clearly with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of protection of the present application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in other sequences than those illustrated or otherwise described herein, and that the terms "first" and "second" are generally used herein in a generic sense to distinguish one element from another, and not necessarily from another element, such as a first element which may be one or more than one. In addition, "and/or" in the specification and the claims means at least one of connected objects, and a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

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

Fig. 1 is a block diagram showing a wireless communication system to which an embodiment of the present application is applicable. The wireless communication system includes a terminal 11 and a network-side device 12. Wherein, the terminal 11 may also be called as a terminal Device or a User Equipment (UE), the terminal 11 may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer) or a notebook Computer, a Personal Digital Assistant (PDA), a palmtop Computer, a netbook, a super-Mobile Personal Computer (UMPC), a Mobile Internet Device (MID), a Wearable Device (Wearable Device) or a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), and other terminal side devices, the Wearable Device includes: smart watches, bracelets, earphones, glasses, and the like. It should be noted that the embodiment of the present application does not limit the specific type of the terminal 11. The network-side device 12 may be a Base Station or a core network, where the Base Station may be referred to as a node B, an enodeb, an access Point, a Base Transceiver Station (BTS), a radio Base Station, a radio Transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a node B, an evolved node B (eNB), a home node B, a home enodeb, a WLAN access Point, a WiFi node, a Transmit Receive Point (TRP), or some other suitable term in the field, as long as the same technical effect is achieved, the Base Station is not limited to a specific technical vocabulary, and it should be noted that, in the embodiment of the present application, only the Base Station in the NR system is taken as an example, but the specific type of the Base Station is not limited.

The following is a brief description of the procedure of random access (or access) referred to in the embodiments of the present application.

(1) Random access procedure

NR supports two types of random access procedures: 4-step RA type for Msg1 (4-step RACH) and 2-step RA type for MSGA (2-step RACH). Both types of RA procedures support Contention-based random access (CBRA) and Contention-free random access (CFRA), as shown in fig. 2. The 2-step RACH flow is generally applied to areas with better coverage, and the access time of the terminal is shortened. For areas with poor signal coverage, the terminal should access the cell using a 4-step RACH procedure.

1) 4-step RACH procedure

In 4-step RACH, a terminal (UE) firstly sends an Msg1 to a network side (base station), wherein the Msg1 comprises a Random Access preamble; after the UE transmits the preamble, it monitors a Physical Downlink Control Channel (PDCCH) in a Random Access Response (RAR) time window (RA Response window), and receives an RAR scheduled by the PDCCH scrambled with a Random Access (RA-RNTI) in a fallback Downlink Control Information (DCI) format (i.e., DCI format 1_0). If the preamble index (preamble index) in the RAR is the same as the preamble index sent by the UE, the RAR is considered to be successfully received, and at this time, the UE may stop monitoring the RAR and send Msg3 according to an indication of a grant (grant) carried in the RAR; msg3 is transmitted on an Uplink Shared Channel (UL-SCH), and uses a Hybrid Automatic Repeat reQuest (HARQ), scrambles a PDCCH with an RA-RNTI indicated by the RAR, and schedules retransmission of Msg3 with a fallback (fallback) DCI format (i.e., DCI format 1_0). The Msg3 needs to contain an important message: a unique flag per UE. This flag will be used for conflict resolution in step four. After receiving the Msg3, the Network side schedules the PDCCH scrambled by the RA-RNTI to Msg4, and when the UE successfully decodes a UE conflict Resolution Identity (Control Resolution Identity) contained in the Msg4 and is matched with a UE conflict Resolution Identity sent by the Msg3, the UE considers that random access is successful and sets a Cell Radio Network Temporary Identity (C-RNTI) of the UE to be the RA-RNTI, namely 4-step random access is completed.

2) PRACH resource partitioning/multiplexing rules for 4-step RACH and 2-step RACH

Please refer to fig. 3, at 4-sIn the case where RACH Occasion (RO) is shared by the tep RACH and 2-step RACH, one RO is associated with M SSBs (M is configured by higher layers), including

A preamble. For SSB j (jth SSB), the partition rule of the preamble is: according to preamble number, consecutive

To is that

Associated with SSB j. Wherein the first R lead codes are 4-step RACH Contention-based Random Access (CBRA), the last Q lead codes are 2-step RACH CBRA, and the last

Each preamble is a non-Contention Random Access (CFRA).

3) RA-RNTI calculation rules

RA-RNTI＝1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id

Wherein, s _ id represents a first Orthogonal Frequency Division Multiplexing (OFDM) symbol number of the PRACH, t _ id represents a first slot number of the PRACH, f _ id is a Frequency domain number of the PRACH, and ul _ carrier _ id represents a type of an Uplink carrier (0 is a Normal Uplink (NUL), and 1 is a Supplemental Uplink (SUL)).

4) MSGB-RNTI calculation rules

MSGB-RNTI＝1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+14×80×8×2

Wherein s _ id represents the first OFDM symbol number of the PRACH, t _ id represents the first slot number of the PRACH, f _ id is the frequency domain number of the PRACH, and ul _ carrier _ id represents the type of the uplink carrier (0 is NUL,1 is SUL).

5) Definition and value of Radio Network Temporary Identity (RNTI)

Referring to table 1, the range of values of rnti is 0 to 65535. The value range of RA-RNTI is 0-17919. The value range of MSGB-RNTI is 17920-35839.

TABLE 1

6) Masking (Mask) use for 2-step RACH

Referring to Table 2, the set of available RO transmissions is limited for 2-step RACH transmissions by msgA-SSB-SharedRO-MaskIndex.

TABLE 2

The Rel15/16 protocol defines the configuration method of PRACH resources of 4-step RACH and 2-step RACH. For new functions/characteristics (Msg 3PUSCH repeated transmission random access procedure, reccap terminal, SDT) appearing in Rel17, corresponding PRACH resources need to be configured on the basis of the existing PRACH resource configuration.

The Msg1 transmission resource determining method, the terminal and the network side device provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings and some embodiments and application scenarios thereof.

Referring to fig. 4, fig. 4 is a schematic flowchart illustrating a method for determining Msg1 transmission resources according to an embodiment of the present application, where the method includes:

step 41: the terminal determines the sending parameters of the Msg1 of a random access process of Msg3PUSCH repeated transmission, wherein the sending parameters comprise RACH opportunity and a preamble, and the sending parameters meet one of the following conditions:

using the same RACH occasion as 4-step RACH, a different preamble;

using a different RACH occasion than 4-step RACH;

step 42: and the terminal sends the Msg1 of the random access process of the repeated transmission of the Msg3PUSCH according to the sending parameters.

In the embodiment of the present application, the preamble is configured by the network side.

In the embodiment of the application, a method for determining the Msg1 transmission resources of a random access process of Msg3PUSCH repeated transmission is defined, and network side equipment and a terminal can be ensured to accurately determine the purpose of PRACH resources.

In this embodiment, optionally, using a RACH occasion different from the 4-step RACH includes one of the following:

using a same RACH occasion as the 2-step RACH and a different preamble than the 2-step RACH, wherein the 2-step RACH and the 4-step RACH use different RACH occasions;

using an independently configured RACH occasion, wherein the independently configured RACH occasion is different from RACH occasions of a 2-step RACH and a 4-step RACH.

In this embodiment, optionally, the RACH occasion using independent configuration includes one of the following:

the configuration of the independent RACH opportunity and the RACH opportunity of the 4-step RACH adopt a frequency domain multiplexing mode;

the configuration of the independent RACH opportunity and the RACH opportunity of the 4-step RACH adopt a time domain multiplexing mode.

In this embodiment of the application, optionally, if the same RACH occasion as the 4-step RACH is used for Msg1 of the random access procedure of the Msg3PUSCH repeated transmission, the preamble of Msg1 of the random access procedure of the Msg3PUSCH repeated transmission is after the CBRA preamble of Msg1 of the 4-step RACH.

In this embodiment of the application, optionally, if the same RACH occasion as the 2-step RACH is used for Msg1 of the random access procedure of the Msg3PUSCH repeated transmission, the preamble of Msg1 of the random access procedure of the Msg3PUSCH repeated transmission is after the CBRA preamble of the 2-step RACH.

In this embodiment of the application, optionally, the determining, by the terminal, the Msg1 sending parameter of the random access procedure for the Msg3PUSCH repeated transmission includes:

the terminal determines a first lead code index set of Msg1 of a random access process of Msg3PUSCH repeated transmission;

and the terminal randomly selects a preamble from the first preamble index set as the preamble of the Msg1 of the random access procedure of the Msg3PUSCH repeated transmission.

In this embodiment of the application, optionally, the determining, by the terminal, the first preamble index set of Msg1 used in the random access procedure for the Msg3PUSCH repeated transmission includes:

the terminal determines each PRACH function contained in a first RACH opportunity of Msg1 of a random access process of Msg3PUSCH repeated transmission;

the terminal determines a start index of a preamble of each PRACH function (which may also be referred to as a characteristic);

wherein, the first RACH occasion is associated with M SSBs, and a start index of a preamble of an ith PRACH function in a preamble index set of a jth SSB associated with the first RACH occasion is:

i is more than or equal to 0 and less than or equal to K-1,0 and less than or equal to K-1,0 and less than or equal to j and less than or equal to M-1, wherein,

the number of the preambles included in the first RACH occasion is N, K PRACH functions are included in the first RACH occasion _k The number of preambles corresponding to the kth PRACH function.

In the embodiment of the application, a dividing rule of the PRACH resources is defined, and the PRACH resources can be shared by different PRACH functions.

In the embodiment of the application, the optical component is M, K, N _k And

predefined by network side configuration or protocol. Further alternatively, the configuration may be performed by the network side through higher layer signaling.

In this embodiment of the present application, optionally, the PRACH function includes at least one of:

4-step RACH for contention-based random access without Msg3PUSCH repeat transmission;

2-step RACH for contention-based random access;

4-step RACH for contention-based random access including Msg3PUSCH repeated transmission;

indication of a reduced capability UE for contention based random access;

small data transmission based on contention based random access;

non-contention based random access.

In the embodiment of the application, if the network side configures parameters of a corresponding PRACH function for the terminal, the terminal is considered to support the corresponding PRACH function.

Optionally, a mapping order of the K PRACH functions included in the first RACH occasion is predefined by a protocol or configured by a system message.

In this embodiment of the application, optionally, the indexes of the preambles of the PRACH function are arranged from small to large according to the following order:

4-step RACH for contention-based random access without Msg3PUSCH repetition transmission;

2-step RACH for contention-based random access;

an indication of a reduced functionality terminal for contention-based random access;

small data transmission for contention-based random access;

non-contention based random access.

In this embodiment of the present application, optionally, at least one of the following PRACH functions is transmitted using the same RACH occasion as the 2-step-RACH:

2-step RACH for contention-based random access;

4-step RACH for contention-based random access including Msg3PUSCH repeat transmission;

small data transmissions based on contention based random access.

In this embodiment of the present application, optionally, at least one of the following PRACH functions is transmitted using an independently configured RACH occasion:

small data transmissions based on contention based random access.

In this embodiment of the application, optionally, if Msg1 of the random access procedure for Msg3PUSCH repeated transmission uses the same RACH occasion as 4-step RACH and 2-step RACH is not configured or 2-step RACH uses a RACH occasion different from 4-step RACH, the start index of the CBRA preamble of Msg1 of the random access procedure for Msg3PUSCH repeated transmission of the jth SSB associated with the first RACH occasion is:

wherein,

s is the number of CBRA preambles for Msg1 of the random access procedure for Msg3PUSCH repeated transmission, R is the number of CBRA preambles for Msg1 of the 4-step RACH on each SSB associated with the first RACH occasion. Msg1 of the random access procedure for Msg3PUSCH repeated transmissions uses the same SSB mapping configuration as the 4step RACH occasion.

In the embodiment of the present application, optionally, if Msg1 of the random access procedure of the Msg3PUSCH retransmission uses the same RACH occasion as the 4-step RACH and 2-step RACH is configured, the start index of the CBRA preamble of the Msg1 of the random access procedure of the Msg3PUSCH retransmission of the jth SSB associated with the first RACH occasion satisfies one of the following conditions:

if the first RACH occasion simultaneously supports the random access process of repeated transmission of 4-step RACH,2-step RACH and Msg3PUSCH, the random access flow of repeated transmission of the Msg3PUSCH of the jth SSB associated with the first RACH occasionThe starting index of the CBRA preamble of Msg1 of the range is:

wherein,

if the network side indicates that the first RACH occasion is used as a 2-step RACH through high layer signaling, the complementary mask corresponding to the mask configured by the 2-step RACH is used as the mask of the Msg1 of the random access procedure of the Msg3PUSCH repeated transmission, or the mask of the Msg1 of the random access procedure of the Msg3PUSCH repeated transmission is obtained according to a protocol predefined rule, or the mask offset rule configured by the system obtains the mask of the Msg1 of the random access procedure of the Msg3PUSCH repeated transmission, that is, there is an offset between the mask of the Msg1 of the random access procedure of the Msg3PUSCH repeated transmission and the mask configured by the 2-step RACH, and the starting index of the CBRA preamble of the Msg1 of the random access procedure of the jth SSB Msg3PUSCH repeated transmission associated with the first RACH occasion is:

wherein,

if Msg1 of the random access procedure of the repeated transmission of the 2-step RACH and the Msg3PUSCH is configured with a mask, and the first RACH occasion simultaneously supports the random access procedure of the repeated transmission of the 2-step RACH and the Msg3PUSCH, the starting index of the CBRA preamble of the Msg1 of the random access procedure of the repeated transmission of the Msg3PUSCH of the jth SSB associated with the first RACH occasion is:

if the first RACH occasion only supports the random access procedure of the Msg3PUSCH repeated transmission, the start index of the CBRA preamble of the Msg1 of the random access procedure of the Msg3PUSCH repeated transmission of the jth SSB associated with the first RACH occasion is:

wherein S is the number of CBRA preambles of Msg1 of the random access procedure of the Msg3PUSCH repeat transmission, R is the number of CBRA preambles of Msg1 of the 4-step RACH on each SSB associated with the first RACH occasion, and Q is the number of CBRA preambles of the 2-step RACH on each SSB associated with the first RACH occasion.

In this embodiment of the application, optionally, the terminal determines that the sending parameter of the Msg1 of the random access procedure of the Msg3PUSCH repeated transmission includes at least one of the following:

if a second RACH occasion simultaneously requires to support Msg1 of a random access flow repeatedly transmitted by a 4-step RACH, a 2-step RACH and an Msg3PUSCH, the second RACH occasion is considered to be unavailable for the Msg1 of the random access flow repeatedly transmitted by the Msg3 PUSCH;

if the second RACH occasion simultaneously requires the Msg1 of the random access flow for supporting the 4-step RACH,2-step RACH and Msg3PUSCH repeated transmission, and the total of the preambles configured by the Msg1 of the random access flow for the 4-step RACH,2-step RACH and Msg3PUSCH repeated transmission exceeds the maximum preamble number

The second RACH occasion is considered unavailable for Msg1 of a random access procedure of Msg3PUSCH repeated transmission.

Considering that the second RACH occasion can be used as Msg1 of the random access procedure for Msg3PUSCH repeated transmission at the first RACH occasion, and the starting position of Msg1 of the random access procedure for Msg3PUSCH repeated transmission at the second RACH occasion is

In an amount of

Wherein R is a number of CBRA preambles of Msg1 of the 4-step RACH on each SSB associated with the second RACH occasion, and Q is a number of CBRA preambles of the 2-step RACH on each SSB associated with the second RACH occasion.

In this embodiment of the application, optionally, if the same RACH occasion as the 2-step RACH is used for Msg1 of the random access procedure with Msg3PUSCH repeated transmission, the start sequence index of the CBRA preamble of the Msg1 of the random access procedure with Msg3PUSCH repeated transmission of the jth SSB associated with the first RACH occasion is:

wherein Q is a number of CBRA preambles of a 2-step RACH on each SSB associated with the first RACH occasion. Msg3 random access procedure Msg1 for PUSCH repeated transmissions uses the same SSB mapping configuration as 2-step RACH occasion.

In this embodiment of the application, optionally, if the same RACH occasion as the 2-step RACH is used for Msg1 of the random access procedure with Msg3PUSCH repeated transmission, the start index of the CBRA preamble of the Msg1 of the random access procedure with Msg3PUSCH repeated transmission of the jth SSB associated with the first RACH occasion satisfies one of the following conditions:

if the mask is configured in the 2-step RACH, a complementary mask corresponding to the mask configured in the 2-step RACH is used as the mask of the Msg1 of the random access procedure for the Msg3PUSCH repeated transmission, and the start index of the CBRA preamble of the Msg1 of the random access procedure for the Msg3PUSCH repeated transmission of the jth SSB associated with the first RACH occasion is:

if mask is configured for Msg1 of the random access procedure of the 2-step RACH and Msg3PUSCH repeated transmission, and the first RACH occasion simultaneously supports the Msg1 of the random access procedure of the 2-step RACH and Msg3PUSCH repeated transmission, the first RACH occasion is associated withThe starting index of the CBRA preamble of Msg1 of the random access procedure of the Msg3PUSCH retransmission of the jth SSB is:

wherein,

if the first RACH occasion only supports the random access procedure of the Msg3PUSCH retransmission, the starting index of the CBRA preamble of the Msg1 of the random access procedure of the Msg3PUSCH retransmission of the jth SSB associated with the first RACH occasion is:

wherein S is the number of CBRA preambles of Msg1 of the random access procedure of the Msg3PUSCH repeated transmission, and Q is the number of CBRA preambles of the 2-step RACH on each SSB associated with the first RACH occasion.

If the Msg1 of the random access process of the Msg3PUSCH repeated transmission uses the independently configured RACH opportunity, the independently configured RACH opportunity and the RACH opportunity of the 4-step RACH adopt a frequency domain multiplexing mode, and SSB mapping configuration which is the same as the 4-step RACH opportunity is used;

and the configuration of the independent RACH opportunity and the RACH opportunity of the 4-step RACH adopt a time domain multiplexing mode and use the SSB mapping configuration of independent configuration.

In this embodiment, optionally, after sending the Msg1 of the random access procedure of the Msg3PUSCH repeated transmission, the terminal further includes:

monitoring the Msg2, wherein the terminal judges whether the received Msg2 is the Msg2 corresponding to the Msg1 repeatedly transmitted by the Msg3PUSCH according to the RNTI and/or a random access preamble identifier RAPID contained in the received Msg2.

In this embodiment, optionally, if the Msg1 of the random access procedure of the Msg3PUSCH retransmission uses the same RACH occasion as the 4-step RACH, the determining, by the terminal according to the RNTI and/or the RAPID included in the received Msg2, whether the received Msg2 is the Msg2 corresponding to the Msg1 of the Msg3PUSCH retransmission includes:

the terminal calculates the RNTI according to the RA-RNTI calculation mode of the 4-step RACH, and judges whether the received Msg2 is the Msg2 corresponding to the Msg1 repeatedly transmitted by the Msg3PUSCH or not by using the RAPID;

the terminal calculates the RNTI according to the MSGB-RNTI calculation mode of the 2-step RACH, and judges whether the received Msg2 is the Msg2 corresponding to the Msg1 repeatedly transmitted by the Msg3PUSCH or not by using the RAPID;

and the terminal calculates the RNTI according to a special calculation mode, wherein the special calculation mode is different from the calculation modes of the RA-RNTI and the MSGB-RNTI.

The RA-RNTI calculation mode of the 4-step RACH is as follows:

RA-RNTI＝1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id

The MSGB-RNTI calculation mode of the 2-step RACH is as follows:

MSGB-RNTI＝1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+14×80×8×2。

in this embodiment, optionally, if the Msg1 of the random access procedure for Msg3PUSCH retransmission uses the same RACH occasion as the 2-step RACH, the determining, by the terminal according to the RNTI and/or the RAPID included in the received Msg2, whether the received Msg2 is the Msg2 corresponding to the Msg1 for Msg3PUSCH retransmission includes:

In this embodiment of the present application, optionally, the special calculation manner is:

RNTI＝1+s_id1+14×t_id1+14×80×f_id1+14×80×8×ul_carrier_id；

or alternatively

RNTI＝1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+14×80×8×4；

Wherein s _ id1= mod (s _ id + Δ 1,14), t _ id1= mod (t _ id + Δ 2,80), f _ id1= mod (f _ id + Δ 3,8), Δ 1, Δ 2, Δ 3 are integers greater than or equal to zero and predefined by a network side configuration (e.g., by a system message configuration) or a protocol, s _ id represents a first OFDM symbol number of PRACH, t _ id represents a first slot number of PRACH, f _ id is a frequency domain number of PRACH, and ul _ carrier _ id represents a type of uplink carrier.

Optionally, the calculation manner of the RNTI of the random access flow of the Msg3PUSCH repeated transmission may be determined according to the multiplexing relationship between the Msg1 of the random access flow of the Msg3PUSCH repeated transmission and the 4-step RACH occasion or the 2-step RACH occasion. For example, msg1 of a random access process of Msg3PUSCH repeated transmission is multiplexed with 4-step RACH opportunity, and RNTI is calculated according to the calculation mode of RA-RNTI; if the Msg1 of the random access process of the Msg3PUSCH repeated transmission and the 2-step RACH opportunity are multiplexed, calculating the RNTI according to the calculation mode of the MSGB-RNTI; and if the Msg1 of the random access flow of the Msg3PUSCH repeated transmission uses the independent RACH opportunity, calculating the RNTI by using a special calculation mode.

Optionally, in this embodiment of the application, if the system supports multiple configurations of Msg1 in the random access procedure of Msg3PUSCH repeated transmission (for example, sharing an RO mode with a 4-step RACH, sharing an RO mode with a 2-step RACH, or independent RO mode), the system may define a unified RNTI calculation method to ensure that RNTIs are calculated in different configuration modes, so as to reduce the calculation complexity of the network device and the terminal device.

Further optionally, the terminal device may detect DCI format1-0 for scheduling Msg2 using the dedicated RNTI and the RA-RNTI, respectively. If the terminal successfully detects the DCI format1-0 scrambled by the special RNTI and RAPID check passes, the scheduling information format of Msg3PUSCH repeated transmission is used for resolving the RAR UL grant, for example, a TDRA table special for Msg3PUSCH repeated transmission or other protocol predefined or system message configured data sets are used for resolving information on a corresponding field of the RAR UL grant. And if the terminal successfully detects DCI format1-0 of the detection scheduling Msg2 scrambled by the RA-RNTI and RAPID check is passed, the RAR UL grant format defined by Rel-15/16 is used for resolving the RAR UL grant.

Referring to fig. 5, an embodiment of the present application further provides a method for determining Msg1 transmission resources, including:

step 51: the method comprises the steps that network side equipment receives Msg1 sent by a terminal;

step 52: if the sending parameter of the Msg1 meets one of the following conditions, the network side device determines that the Msg1 is Msg1 of a random access flow of Msg3PUSCH repeated transmission:

using the same RACH occasion as 4-step RACH, a different preamble;

a different RACH occasion, a different preamble, is used than for 4-step RACH.

Optionally, using a RACH occasion different from 4-step RACH includes one of:

using the same RACH occasion as 2-step RACH, a different preamble, wherein 2-step RACH and 4-step RACH use different RACH occasions;

Optionally, using the independently configured RACH occasion includes one of:

and the configuration of the independent RACH occasion and the RACH occasion of the 4-step RACH adopt a time domain multiplexing mode.

Optionally, the method further includes:

the network side equipment configures M, K, N for the terminal _k And/or

Wherein, M is the number of SSBs associated with one RACH occasion, K is the number of PRACH functions included on one RACH occasion, N _k Preamble corresponding to kth PRACH functionThe number of the codes is such that,

the number of preambles included for one RACH occasion.

Optionally, the PRACH function includes at least one of:

2-step RACH for contention-based random access;

small data transmission based on contention based random access;

non-contention based random access.

Optionally, the method according to the embodiment of the present application further includes one of:

the network side equipment calculates the RNTI according to the RA-RNTI calculation mode of the 4-step RACH;

the network side equipment calculates the RNTI according to the MSGB-RNTI calculation mode of the 2-step RACH;

and the network side equipment calculates the RNTI according to a special calculation mode, wherein the special calculation mode is different from the calculation modes of the RA-RNTI and the MSGB-RNTI.

Optionally, the special calculation method is as follows:

RNTI＝1+s_id1+14×t_id1+14×80×f_id1+14×80×8×ul_carrier_id；

or alternatively

RNTI＝1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+14×80×8×4；

Wherein s _ id1= mod (s _ id + Δ 1,14), t _ id1= mod (t _ id + Δ 2,80), f _ id1= mod (f _ id + Δ 3,8), Δ 1, Δ 2, Δ 3 are integers greater than or equal to zero and predefined by a network side configuration or protocol, s _ id represents a first OFDM symbol number of PRACH, t _ id represents a first slot number of PRACH, f _ id is a frequency domain number of PRACH, and ul _ carrier _ id represents a type of uplink carrier.

The Msg1 transmission resource determination method in the above embodiment is described below by taking specific scenarios as examples.

The first embodiment of the application:

in the embodiment of the application, the Msg1 of the random access flow of the Msg3PUSCH repeated transmission and the Msg1 of the 4-step RACH flow share the RACH opportunity, and the preamble of the Msg1 of the random access flow of the Msg3PUSCH repeated transmission is different from the preamble of the Msg1 of the 4-step RACH.

In the embodiment of the application, a terminal determines a sending parameter of Msg1 of a random access process of Msg3PUSCH repeated transmission, wherein the sending parameter meets the following conditions:

msg1 of the random access procedure of Msg3PUSCH repeated transmission uses the same RACH Occasion (RO, RACH occupancy) as 4-step RACH, which can also be described as: the RACH time of the Msg1 of the random access flow of the Msg3PUSCH repeated transmission and the RACH time of the Msg1 of the 4step RACH have the same determination rule of time-frequency resources.

The preamble of Msg1 of random access procedure for Msg3PUSCH repeat transmission follows the CBRA preamble of Msg1 of 4-step RACH.

According to the system message configuration, if 4-step RACH is supported, one RO is associated with M SSBs, each with R4-step RACH CBRA preambles. If 2-step RACH is supported, one RO is associated with M SSBs, each SSB having Q2-step RACH CBRA preambles. A RO and

the preambles are associated.

The number of CBRA preambles of Msg1 of the random access flow of the Msg3PUSCH repeated transmission is S, the CBRA preambles are configured by system messages, and the Msg1 of the random access flow of the Msg3PUSCH repeated transmission is configured by SSB mapping with the same time as the 4-step RACH.

Starting sequence of CBRA preamble of Msg1 of random access procedure for Msg3PUSCH repeated transmission of jth SSB associated with RO (RO of Msg1 of random access procedure for Msg3PUSCH repeated transmission) if 2-step RACH is not configured by cell or 2-step RACH uses independent RO configurationThe column index is:

j is more than or equal to 0 and less than or equal to M-1, and network side configuration is guaranteed

If the cell is configured with 4-step RACH and 2-step RACH sharing RO at the same time, there are several configuration rules as follows:

if one RO supports Msg1 of 4-step RACH,2-step RACH and Msg3PUSCH repeated transmission simultaneously, then the starting index of the CBRA preamble of Msg1 of the Msg3PUSCH repeated transmission random access flow of the jth SSB associated with the RO (RO of Msg1 of the random access flow of Msg3PUSCH repeated transmission) is:

Special Case1: if the network configuration indicates that part of RO (RO of Msg1 of the random access flow of Msg3PUSCH repeated transmission) is used as the 2-step RACH through higher layer signaling (e.g. xxxMask), a complementary mask corresponding to the mask (mask) of the 2-step RACH configuration is used as the mask of Msg1 of the random access flow of Msg3PUSCH repeated transmission, or the mask of the Msg1 of the random access flow of Msg3PUSCH repeated transmission is obtained by offsetting a plurality of ROs from the mask of the 2-step RACH configuration according to a protocol predefined rule or system configuration, for example, the mask of the 2-step RACH configuration is mask1, and the mask of the Msg1 of the random access flow of 1 of Msg3PUSCH repeated transmission is offset 1, msg2. The starting index of the CBRA preamble of Msg1 of the Msg3PUSCH repeatedly transmitted random access procedure of the jth SSB associated with RO (RO of Msg1 of the random access procedure of Msg3PUSCH repeatedly transmitted) is:

n is more than or equal to 0 and less than or equal to M-1, and network side configuration is guaranteed

Special Case2: if Msg1 of the random access procedure of the repeated transmission of the 2-step RACH and the Msg3PUSCH is configured with a mask and one RO simultaneously supports the repeated transmission of the 2-step RACH and the Msg3PUSCH, the starting index of the CBRA preamble of the Msg1 of the random access procedure of the repeated transmission of the Msg3PUSCH of the jth SSB associated with the RO is:

n is more than or equal to 0 and less than or equal to M-1. If one RO supports only Msg3PUSCH repeated transmission, the starting index of the CBRA preamble of Msg1 of the random access procedure for Msg3PUSCH repeated transmission of the jth SSB associated with the RO is:

0≤n≤M-1。

optionally, by a predefined rule of a protocol, when a certain RO is configured according to a mask and simultaneously requires to support Msg1 of a random access procedure of 4-step RACH,2-step RACH, msg3PUSCH repeated transmission, it is considered that the RO is unavailable for Msg1 of the random access procedure of Msg3PUSCH repeated transmission, that is, the RO does not support Msg1 of the random access procedure of Msg3PUSCH repeated transmission.

Optionally, by a predefined rule of the protocol, when a certain RO simultaneously requires to support Msg1 of the random access procedure of 4-step RACH,2-step RACH, msg3PUSCH repeated transmission, and the sum of the configured preambles of the three exceeds the maximum number of preambles defined by the system

And then, according to a protocol predefined rule, the RO is considered to be unavailable to the Msg1 of the random access flow of the Msg3PUSCH repeated transmission, namely the RO does not support the Msg1 of the random access flow of the Msg3PUSCH repeated transmission.

If the cell also supports the PRACH division of other characteristics (except for the repeated transmission of 4-step RACH,2-step RACH and Msg3 PUSCH), the number of CBRA preambles of the PRACH of the other characteristics is T.

And according to the protocol definition rule, dividing the preamble resources according to the sequence of the fixed rule. For example, preamble 0-R-1 belongs to 4-step RACH CBRA, preamble R-R + Q-1 belongs to 2-step RACH CBRA, preamble R + Q-R + Q + S-1 belongs to CBRA of random access procedure of Msg3PUSCH repeated transmission, and preamble R + Q + S-R + Q + S + T-1 belongs to CBRA with other characteristics. Please refer to fig. 6 and 7.

And the terminal determines a preamble index set corresponding to the Msg3 repeated transmission according to the mode, randomly selects a preamble in the preamble index set to send the Msg1, and starts to monitor the Msg2.

The terminal judges whether the received Msg2 is the Msg2 message corresponding to the Msg1 of the random access flow of the Msg3PUSCH repeated transmission according to the RNTI and/or a Random Access Preamble Identity (RAPID) included in the Msg2.

Optionally, the terminal calculates the RNTI according to the RA-RNTI calculation mode of the 4-step RACH, and uses the RAPID to determine whether the Msg2 is the Msg2 corresponding to the Msg1 of the random access flow of the Msg3PUSCH repeated transmission.

The terminal calculates the RNTI according to the MSGB-RNTI calculation mode of the 2-step RACH, and the RAPID is used for judging whether the Msg2 is Msg2 corresponding to Msg1 of a random access flow of Msg3PUSCH repeated transmission. For example, when 2-step RACH and Msg3PUSCH repeat transmissions do not occur in one RO at the same time, the Msg3PUSCH repeat transmission terminal calculates the RNTI using the MSGB-RNTI calculation method of the 2-step RACH.

Optionally, the terminal calculates the RNTI according to a newly defined calculation method. For example, the RNTI is calculated by adding an offset to the time-frequency number.

One possible implementation is: RNTI =1+ s \ u _ id1+14 × 80 × f _ id1+14 × 80 × 8 × ul _ carrier _ id;

where s _ id1= mod (s _ id + Δ 1,14), t _ id1= mod (t _ id + Δ 2,80), and f _ id1= mod (f _ id + Δ 3,8). Δ 1, Δ 2, Δ 3 are integers greater than or equal to zero, predefined by a system message configuration or protocol.

Another possible implementation is: RNTI =1+ s \uid +14 × t _ id +14 × 80 × f _ id +14 × 80 × 8 × ul _ carrier _ id +14 × 80 × 8 × 4.

In this embodiment of the application, if the system supports multiple configurations of Msg1 in the random access procedure of the Msg3PUSCH repeated transmission (for example, the RO mode shared with the 4-step RACH, the RO mode shared with the 2-step RACH, or the independent RO mode), the system may define a unified RNTI calculation method to ensure that RNTIs are calculated in different configurations.

And for the Msg2 verified by the RNTI and/or the RAPID, the terminal analyzes the received Msg2 according to the Msg2 format of the Msg3PUSCH repeated transmission defined by the protocol and transmits the Msg3.

The second embodiment of the application:

in the embodiment of the application, msg1 of the random access procedure of Msg3PUSCH repeated transmission uses a mode of sharing RO with 2-step RACH, and in this case, the 2-step RACH adopts independent RO configuration (different from RO of 4-step RACH). Msg1 of the random access procedure for Msg3PUSCH retransmission uses the same SSB mapping configuration as 2-step RACH.

The terminal determines a sending parameter of Msg1 of a random access process of Msg3PUSCH repeated transmission, wherein the sending parameter meets the following conditions:

msg1 of the random access procedure for Msg3PUSCH repeated transmission uses the same RACH occasion as 2-step RACH, which can also be described as: the RACH timing of Msg1 of the random access procedure of Msg3PUSCH retransmission is the same as the RACH timing determination rule of Msg1 of 2step RACH.

The Msg3PUSCH repeatedly transmitted CBRA preamble of Msg1 of the random access procedure follows the CBRA preamble of the 2-step RACH.

According to the system message configuration, one RO supporting 2-step RACH is associated with M SSBs, one RO is associated with M SSBs, each SSB having Q2-step RACH CBRA preambles. A RO and

each preamble is associated.

The number of the CBRA preambles of the Msg1 in the random access process of the Msg3PUSCH repeated transmission is S, and the CBRA preambles are configured by system messages.

The starting index of the CBRA preamble of Msg1 of the random access procedure for Msg3PUSCH retransmission of the jth SSB associated with RO is:

For the case of 2-step RACH and Msg3PUSCH repeated transmission with Mask configured:

case1: if the mask is configured by the 2-step RACH, the complementary mask corresponding to the mask configured by the 2-step RACH is used as the mask of the Msg1 of the random access procedure of the Msg3PUSCH repeated transmission. The starting index of the CBRA preamble of Msg1 of the random access procedure for Msg3PUSCH retransmission of the jth SSB associated with RO is:

0≤j≤M-1。

case2: if Msg1 of the random access procedure of the 2-step RACH and Msg3PUSCH repeated transmission is configured with mask and one RO simultaneously supports the 2-step RACH and Msg3PUSCH repeated transmission procedure, the starting index of CB preamble of Msg1 of the random access procedure of the Msg3PUSCH repeated transmission of the jth SSB associated with the RO is:

j is more than or equal to 0 and less than or equal to M-1. If one RO only supports the Msg3PUSCH repeated transmission, the starting index of the CBRA preamble of Msg1 of the random access procedure for Msg3PUSCH repeated transmission of the jth SSB associated with the RO is:

0≤j≤M-1。

if the cell also supports other characteristic PRACH partitions and Msg1 is sent with a separate RO for 2-step RACH as well. The number of CBRA preambles of the PRACH with other characteristics is T.

And according to the protocol definition rule, dividing the preamble resources according to the sequence of the fixed rule. For example, referring to FIG. 8, preamble 0-Q-1 belongs to 2-step RACH CBRA, preamble Q-Q + S-1 belongs to CBRA associated with Msg3PUSCH repeated transmission, and preamble Q + S-Q + S + T-1 belongs to CBRA with other characteristics.

And the terminal determines a preamble index set according to the above mode, randomly selects a preamble to send Msg1, and starts to monitor Msg2.

And the terminal judges whether the received Msg2 is the Msg2 message corresponding to the Msg1 of the random access flow of the Msg3PUSCH repeated transmission according to the RNTI and/or the RAPID contained in the Msg2.

Optionally, the terminal calculates the RNTI according to the MSGB-RNTI calculation method of the 2-step RACH, and determines whether the Msg2 is the Msg2 corresponding to the Msg1 of the random access flow of the Msg3PUSCH repeated transmission by using the RAPID. For example, when 2-step RACH and Msg3PUSCH repeated transmission do not occur in one RO at the same time, the Msg3PUSCH repeated transmission calculates RNTI by using the MSGB-RNTI calculation method of the 2-step RACH.

The terminal calculates the RNTI according to the newly defined dedicated calculation method. For example, the RNTI is calculated by adding an offset to the time-frequency number.

The third embodiment of the application:

the system configures an independent RO for Msg1 sending of a random access procedure for Msg3PUSCH repeated transmission.

Optionally, the independent ROs are configured in a frequency domain multiplexing manner, that is, independent RO frequency start index RO-freqystart (similar to msg 1-freqystart or msgA-RO-freqystart) and RO frequency domain multiplexing number FDM (similar to msg1-FDM or msgA-RO-FDM) are configured. Independent RO Msg1 for random access procedure for Msg3PUSCH repeated transmission uses the same SSB mapping configuration as 4step RACH RO.

Alternatively, the independent ROs are configured in a time domain multiplexing manner, i.e., the offset of the starting symbol/slot of the independent RO with respect to the 4-step RACH RO is configured. Independent RO Msg1 for random access procedure for Msg3PUSCH repeated transmission uses independently configured SSB mapping configuration.

And the terminal determines a lead code index set according to the system message configuration, randomly selects a lead code to send the Msg1, and starts to monitor the Msg2.

The terminal calculates the RNTI according to a newly defined dedicated calculation method, for example, by adding an offset to the time-frequency number.

One possible implementation is given here: RNTI =1+ s \ u _ id1+14 × 80 × f _ id1+14 × 80 × 8 × ul _ carrier _ id;

Optionally, considering that the number of terminals requiring the Msg3PUSCH repeated transmission is relatively small, the frequency domain multiplexing number of the independent ROs for frequency domain multiplexing is less than 8. For example, the number of frequency domain multiplexes used for Msg3PUSCH repetition transmission may be a subset of a configurable set of Msg1-FDM or msgA-RO-FDM.

And for the Msg2 which passes the RNTI and/or RAPID check, the terminal analyzes the received Msg2 according to the Msg2 format of the Msg3PUSCH repeated transmission defined by the protocol and transmits the Msg3.

In the above embodiments, the Msg3PUSCH retransmission terminal may determine the RNTI for receiving Msg2 through a dedicated formula, where the value of the dedicated RNTI is different from the results of RA-RNTI and MSGB-RNTI calculated by Rel-15/16. The terminal can detect DCI format1-0 of the schedule Msg2 using the dedicated RNTI and the RA-RNTI respectively. If the terminal successfully detects the DCI format1-0 scrambled by the special RNTI and the RAPID check passes, the scheduling information format of the Msg3PUSCH repeated transmission is used for resolving the RAR UL grant, for example, a dedicated TDRA table of the Msg3PUSCH repeated transmission or other protocol predefined or system message configured data sets are used for resolving the information on the corresponding field of the RAR UL grant. And if the terminal successfully detects DCI format1-0 of the RA-RNTI detection scheduling Msg2 and RAPID check is passed, the RAR UL grant format defined by Rel-15/16 is used for resolving the RAR UL grant.

It should be noted that, in the method for determining a Msg1 transmission resource provided in the embodiment of the present application, the execution subject may be a device for determining a Msg1 transmission resource, or a control module in the device for determining a Msg1 transmission resource, which is used for executing the method for determining a Msg1 transmission resource. In the embodiment of the present application, a determination device for Msg1 transport resources provided in the embodiment of the present application will be described by taking as an example a determination method for Msg1 transport resources performed by the determination device for Msg1 transport resources.

Referring to fig. 9, an embodiment of the present invention further provides an apparatus 90 for determining Msg1 transmission resources, including:

a determining module 91, configured to determine sending parameters of Msg1 of a random access procedure of Msg3PUSCH repeated transmission, where the sending parameters include a RACH occasion and a preamble, and the sending parameters satisfy one of the following conditions:

using the same RACH occasion as 4-step RACH, a different preamble;

using a different RACH occasion than 4-step RACH;

and a sending module 92, configured to send Msg1 of the random access procedure of the Msg3PUSCH repeated transmission according to the sending parameter.

Optionally, if the same RACH occasion is used for Msg1 of the random access procedure of the Msg3PUSCH repeated transmission, the preamble of Msg1 of the random access procedure of the Msg3PUSCH repeated transmission is after the CBRA preamble of Msg1 of the 4-step RACH.

Optionally, using a RACH occasion other than 4-step RACH includes one of:

Optionally, if the same RACH occasion is used for the Msg1 of the random access procedure of the Msg3PUSCH repeated transmission, the preamble of the Msg1 of the random access procedure of the Msg3PUSCH repeated transmission is after the CBRA preamble of the 2-step RACH.

Optionally, using the independently configured RACH occasion includes one of:

the RACH opportunity with independent configuration and the RACH opportunity of 4-step RACH adopt a frequency domain multiplexing mode;

Optionally, the determining module 91 is configured to determine a first preamble index set of Msg1 of a random access procedure of Msg3PUSCH repeated transmission; randomly selecting a preamble from the first preamble index set as the preamble of the Msg1 of the random access procedure of the Msg3PUSCH retransmission.

Optionally, the determining module 91 is configured to determine each PRACH function included in a first RACH occasion of Msg1 of a random access procedure of Msg3PUSCH repeated transmission; determining a start index of a preamble of each PRACH function;

wherein the first RACH occasion is associated with M SSBs, and a start index of a preamble of an ith PRACH function in a preamble index set of a jth SSB associated with the first RACH occasion is:

Alternatively, M, K, N _k And

predefined by network side configuration or protocol.

Optionally, the PRACH function includes at least one of:

2-step RACH for contention-based random access;

small data transmission for contention-based random access;

non-contention based random access.

Optionally, the indexes of the preambles of the PRACH function are arranged from small to large according to the following order:

2-step RACH for contention-based random access;

small data transmission for contention-based random access;

non-contention based random access.

Optionally, at least one of the following PRACH functions is transmitted using the same RACH occasion as 2-step-RACH:

2-step RACH for contention-based random access;

small data transmissions based on contention based random access.

Optionally, at least one of the following PRACH functions is transmitted using an independently configured RACH occasion:

small data transmissions based on contention based random access.

Optionally, if Msg1 of the random access procedure with Msg3PUSCH repeated transmission uses the same RACH occasion as 4-step RACH and 2-step RACH is not configured or 2-step RACH uses a different RACH occasion from 4-step RACH, the start index of CBRA preamble of Msg1 of the random access procedure with Msg3PUSCH repeated transmission of jth SSB associated with the first RACH occasion is:

wherein,

s is the number of CBRA preambles of Msg1 of the random access procedure for Msg3PUSCH repeated transmission, R is the number of CBRA preambles of Msg1 of the 4-step RACH on each SSB associated with the first RACH occasion.

Optionally, if the same RACH occasion is used for Msg1 of the random access procedure for Msg3PUSCH repeated transmission and a 2-step RACH is configured, the start index of the CBRA preamble of Msg1 of the random access procedure for Msg3PUSCH repeated transmission of the jth SSB associated with the first RACH occasion satisfies one of the following conditions:

if the first RACH occasion supports the random access procedure of 4-step RACH,2-step RACH and Msg3PUSCH repeated transmission at the same time, the start index of the CBRA preamble of the Msg1 of the random access procedure of the Msg3PUSCH repeated transmission of the jth SSB associated with the first RACH occasion is:

wherein,

if the network side indicates that the first RACH occasion is used as the 2-step RACH through high-layer signaling, a complementary mask corresponding to the mask of the 2-step RACH configuration is used as the mask of the Msg1 of the random access flow of the Msg3PUSCH repeated transmission and is associated with the first RACH occasionThe starting index of the CBRA preamble of Msg1 of the random access procedure of the Msg3PUSCH retransmission of the jth SSB is:

wherein,

Optionally, the determining module 91 is configured to perform at least one of the following:

if the second RACH occasion simultaneously requires Msg1 for random access procedure supporting 4-step RACH,2-step RACH, msg3PUSCH retransmission, and 4-step RACH,2-step RACH,the sum of Msg1 configured preambles of random access procedure for Msg3PUSCH repeated transmission exceeds the maximum preamble number

In an amount of

Optionally, if the same RACH occasion as the 2-step RACH is used for Msg1 of the random access procedure for Msg3PUSCH repeated transmission, the start sequence index of the CBRA preamble of Msg1 of the random access procedure for Msg3PUSCH repeated transmission of the jth SSB associated with the first RACH occasion is:

wherein Q is a number of CBRA preambles of a 2-step RACH on each SSB associated with the first RACH occasion.

Optionally, if the same RACH occasion as the 2-step RACH is used for Msg1 of the random access procedure with Msg3PUSCH repeated transmission, the start index of the CBRA preamble of Msg1 of the random access procedure with Msg3PUSCH repeated transmission of the jth SSB associated with the first RACH occasion satisfies one of the following conditions:

if Msg1 of the random access procedure of the 2-step RACH and Msg3PUSCH repeated transmission is configured with a mask, and the first RACH occasion simultaneously supports Msg1 of the random access procedure of the 2-step RACH and Msg3PUSCH repeated transmission, the start index of the CBRA preamble of Msg1 of the random access procedure of the jth SSB Msg3PUSCH repeated transmission associated with the first RACH occasion is:

wherein,

Optionally, the apparatus further comprises:

and the monitoring module is used for monitoring the Msg2, wherein the terminal judges whether the received Msg2 is the Msg2 corresponding to the Msg1 repeatedly transmitted by the Msg3PUSCH according to the RNTI and/or a random access preamble identifier RAPID contained in the received Msg2.

Optionally, if the Msg1 of the random access procedure for the Msg3PUSCH repeated transmission uses the same RACH occasion as the 4-step RACH, determining whether the received Msg2 is the Msg2 corresponding to the Msg1 for the Msg3PUSCH repeated transmission according to the RNTI and/or the RAPID included in the received Msg2 includes:

calculating the RNTI according to an RA-RNTI calculation mode of the 4-step RACH, and judging whether the received Msg2 is the Msg2 corresponding to the Msg1 of the Msg3PUSCH repeated transmission by using the RAPID;

calculating the RNTI according to the MSGB-RNTI calculation mode of the 2-step RACH, and judging whether the received Msg2 is the Msg2 corresponding to the Msg1 repeatedly transmitted by the Msg3PUSCH or not by using the RAPID;

and calculating the RNTI according to a special calculation mode, wherein the special calculation mode is different from the calculation modes of the RA-RNTI and the MSGB-RNTI.

Optionally, if the Msg1 of the random access procedure for the Msg3PUSCH repeated transmission uses the same RACH occasion as the 2-step RACH, determining whether the received Msg2 is the Msg2 corresponding to the Msg1 for the Msg3PUSCH repeated transmission according to the RNTI and/or the RAPID included in the received Msg2 includes:

Optionally, the special calculation method is as follows:

RNTI＝1+s_id1+14×t_id1+14×80×f_id1+14×80×8×ul_carrier_id；

or

RNTI＝1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+14×80×8×4；

The Msg1 transmission resource determination device in the embodiment of the present application may be a device, a device or an electronic device having an operating system, or may be a component, an integrated circuit, or a chip in a terminal. The device or the electronic equipment can be a mobile terminal or a non-mobile terminal. For example, the mobile terminal may include, but is not limited to, the type of the terminal 11 listed above, and the non-mobile terminal may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a television (television), a teller machine (teller machine), a self-service machine (kiosk), or the like, and the embodiments of the present application are not limited in particular.

The Msg1 transmission resource determining device provided in the embodiment of the present application can implement each process implemented by the method embodiment of fig. 4, and achieve the same technical effect, and is not described here again to avoid repetition.

Referring to fig. 10, an embodiment of the present invention further provides an apparatus 100 for determining Msg1 transmission resources, including:

the receiving module 101 is used for receiving the Msg1 sent by the terminal;

a determining module 102, configured to determine that the Msg1 is Msg1 of a random access procedure of Msg3PUSCH repeated transmission if the sending parameter of the Msg1 satisfies one of the following conditions:

using the same RACH occasion as 4-step RACH, a different preamble;

a different RACH occasion is used than 4-step RACH.

Optionally, using a RACH occasion other than 4-step RACH includes one of:

using the same RACH opportunity as the 2-step RACH and a different preamble, wherein the 2-step RACH and the 4-step RACH use different RACH opportunities;

Optionally, using the independently configured RACH occasion includes one of:

Optionally, the apparatus further comprises:

a configuration module for configuring M, K, N to the terminal _k And/or

Wherein, M is the number of SSBs associated with one RACH occasion, K is the number of PRACH functions included on one RACH occasion, N _k The number of preambles corresponding to the kth PRACH function,

the number of preambles included for one RACH occasion.

Optionally, the PRACH function includes at least one of:

2-step RACH for contention-based random access;

small data transmission based on contention based random access;

non-contention based random access.

Optionally, the apparatus further comprises one of:

the first calculation module is used for calculating the RNTI according to the RA-RNTI calculation mode of the 4-step RACH;

the second calculation module is used for calculating the RNTI according to the MSGB-RNTI calculation mode of the 2-step RACH;

and the third calculation module is used for calculating the RNTI in a special calculation mode, and the special calculation mode is different from the calculation modes of the RA-RNTI and the MSGB-RNTI.

Optionally, the special calculation manner is:

RNTI＝1+s_id1+14×t_id1+14×80×f_id1+14×80×8×ul_carrier_id；

or

RNTI＝1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+14×80×8×4；

Wherein s _ id1= mod (s _ id + Δ 1,14), t _ id1= mod (t _ id + Δ 2,80), f _ id1= mod (f _ id + Δ 3,8), Δ 1, Δ 2, Δ 3 are integers greater than or equal to zero and predefined by a network side configuration or protocol, s _ id represents a first OFDM symbol number of a PRACH, t _ id represents a first slot number of the PRACH, f _ id is a frequency domain number of the PRACH, and ul _ carrier _ id represents a type of an uplink carrier.

The Msg1 transmission resource determining device provided in the embodiment of the present application can implement each process implemented in the method embodiment of fig. 5, and achieve the same technical effect, and is not described here again to avoid repetition.

As shown in fig. 11, an embodiment of the present application further provides a communication device 110, which includes a processor 111, a memory 112, and a program or an instruction stored in the memory 112 and executable on the processor 111, for example, when the communication device 110 is a terminal, the program or the instruction is executed by the processor 111 to implement the processes of the foregoing Msg1 transmission resource determining method embodiment executed by the terminal, and the same technical effects can be achieved. When the communication device 110 is a network-side device, the program or the instruction is executed by the processor 111 to implement each process of the Msg1 transmission resource determining method embodiment executed by the network-side device, and the same technical effect can be achieved.

An embodiment of the present application further provides a terminal, including a processor and a communication interface, where:

using the same RACH occasion as 4-step RACH, a different preamble;

using a different RACH occasion than 4-step RACH;

The terminal embodiment corresponds to the terminal-side method embodiment, and all implementation processes and implementation manners of the method embodiment can be applied to the terminal embodiment and can achieve the same technical effect. Specifically, fig. 12 is a schematic diagram of a hardware structure of a terminal for implementing the embodiment of the present application.

The terminal 120 includes but is not limited to: a radio frequency unit 121, a network module 122, an audio output unit 123, an input unit 124, a sensor 125, a display unit 126, a user input unit 127, an interface unit 128, a memory 129, and at least a part of a processor 1210 and the like.

Those skilled in the art will appreciate that the terminal 120 may further include a power source (e.g., a battery) for supplying power to various components, and the power source may be logically connected to the processor 1210 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system. The terminal structure shown in fig. 12 does not constitute a limitation of the terminal, and the terminal may include more or less components than those shown, or combine some components, or have a different arrangement of components, and thus will not be described again.

It should be understood that, in the embodiment of the present application, the input Unit 124 may include a Graphics Processing Unit (GPU) 1241 and a microphone 1242, and the Graphics Processing Unit 1241 processes image data of a still picture or a video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The display unit 126 may include a display panel 1261, and the display panel 1261 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 127 includes a touch panel 1271 and other input devices 1272. Touch panel 1271 is also referred to as a touch screen. The touch panel 1271 may include two portions of a touch detection device and a touch controller. Other input devices 1272 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

In this embodiment of the application, the radio frequency unit 121 receives downlink data from a network device and then processes the downlink data to the processor 1210; in addition, the uplink data is sent to the network side equipment. Generally, the radio frequency unit 121 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 129 may be used to store software programs or instructions as well as various data. The memory 129 may mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area may store an operating system, an application program or instruction (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. In addition, the Memory 129 may include a high-speed random access Memory, and may further include a nonvolatile Memory, wherein the nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), or a flash Memory. Such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.

Processor 1210 may include one or more processing units; optionally, the processor 1210 may integrate an application processor, which mainly handles operating systems, user interfaces, and applications or instructions, etc., and a modem processor, which mainly handles wireless communications, such as a baseband processor. It is to be appreciated that the modem processor described above may not be integrated into processor 1210.

The processor 1210 is configured to determine a transmission parameter of Msg1 of a random access procedure of Msg3PUSCH repeated transmission, where the transmission parameter includes a RACH occasion and a preamble, and the transmission parameter satisfies one of the following conditions:

using the same RACH occasion as 4-step RACH, a different preamble;

using a different RACH occasion than 4-step RACH;

and the radio frequency unit 121 is configured to send Msg1 of a random access procedure of the Msg3PUSCH repeated transmission according to the sending parameter.

Optionally, using a RACH occasion different from 4-step RACH includes one of:

Optionally, if Msg1 of the random access procedure of the Msg3PUSCH repeated transmission uses the same RACH occasion as that of the 2-step RACH, the preamble of Msg1 of the random access procedure of the Msg3PUSCH repeated transmission follows the CBRA preamble of the 2-step RACH.

Optionally, using the independently configured RACH occasion includes one of:

Optionally, the processor 1210 is configured to determine a first preamble index set of Msg1 of a random access procedure for Msg3PUSCH repeated transmission; randomly selecting a preamble from the first preamble index set as the preamble of Msg1 of a random access procedure of Msg3PUSCH repeated transmission.

Optionally, determining the first preamble index set of Msg1 of the random access procedure destined for the Msg3PUSCH repeated transmission includes:

determining each PRACH function contained in a first RACH opportunity of Msg1 of a random access process of Msg3PUSCH repeated transmission;

determining a start index of a preamble of each PRACH function;

the number of the preambles included in the first RACH opportunity is K PRACH functions, N _k The number of preambles corresponding to the kth PRACH function.

Alternatively, M, K, N _k And

predefined by network side configuration or protocol.

Optionally, the PRACH function includes at least one of:

2-step RACH for contention-based random access;

small data transmission based on contention based random access;

non-contention based random access.

2-step RACH for contention-based random access;

small data transmission based on contention based random access;

non-contention based random access.

2-step RACH for contention-based random access;

small data transmissions based on contention based random access.

small data transmission for contention-based random access.

Optionally, if Msg1 of the random access procedure of Msg3PUSCH retransmission uses the same RACH occasion as 4-step RACH and 2-step RACH is not configured or 2-step RACH is not configured using a different RACH occasion from 4-step RACH, msg3PUSCH of jth SSB associated with the first RACH occasion is retransmittedThe starting index of the CBRA preamble of Msg1 of the access flow is:

wherein,

wherein,

if the network side indicates that the first RACH opportunity is used as a 2-step RACH through high-level signaling, a complementary mask corresponding to the mask configured by the 2-step RACH is used as the mask of the Msg1 of the random access procedure of the Msg3PUSCH repeated transmission, and the starting index of the CBRA preamble of the Msg1 of the random access procedure of the Msg3PUSCH repeated transmission of the jth SSB associated with the first RACH opportunity is as follows:

wherein,

if the mask is configured for Msg1 of the random access procedure of the 2-step RACH and Msg3PUSCH repeated transmission, and the random access procedure of the 2-step RACH and Msg3PUSCH repeated transmission is simultaneously supported by the first RACH occasion, the starting index of the CBRA preamble of the Msg1 of the random access procedure of the Msg3PUSCH repeated transmission of the jth SSB associated with the first RACH occasion is:

Optionally, determining the Msg1 sending parameter of the random access procedure for the Msg3PUSCH repeated transmission includes at least one of:

if the second RACH occasion simultaneously requires the Msg1 of the random access procedure for supporting the 4-step RACH,2-step RACH and Msg3PUSCH repeated transmission, and the sum of the preambles configured by the Msg1 of the random access procedure for the 4-step RACH,2-step RACH and Msg3PUSCH repeated transmission exceeds the maximum preamble number

In an amount of

Optionally, if the same RACH occasion as the 2-step RACH is used for Msg1 of the random access procedure with Msg3PUSCH repeated transmission, the start sequence index of the CBRA preamble of Msg1 of the random access procedure with Msg3PUSCH repeated transmission of the jth SSB associated with the first RACH occasion is:

Optionally, if the Msg1 of the random access procedure of the Msg3PUSCH repeated transmission uses the same RACH occasion as the 2-step RACH, the start index of the CBRA preamble of the Msg1 of the random access procedure of the jth SSB repeated transmission associated with the first RACH occasion satisfies one of the following conditions:

if the mask is configured for the 2-step RACH, the complementary mask corresponding to the mask configured for the 2-step RACH is used as the Msg3PUSCH repeat transmissionThe mask of Msg1 of the input random access procedure, and the start index of the CBRA preamble of Msg1 of the random access procedure repeatedly transmitted by Msg3PUSCH of the jth SSB associated with the first RACH occasion is:

wherein,

Optionally, according to the sending parameter, after sending Msg1 of the random access procedure for the Msg3PUSCH repeated transmission, the method further includes:

Optionally, if the Msg1 of the random access procedure of the Msg3PUSCH repeated transmission uses the same RACH occasion as the 4-step RACH, the determining, by the terminal according to the RNTI and/or the RAPID included in the received Msg2, whether the received Msg2 is the Msg2 corresponding to the Msg1 of the Msg3PUSCH repeated transmission includes:

Optionally, the special calculation manner is:

RNTI＝1+s_id1+14×t_id1+14×80×f_id1+14×80×8×ul_carrier_id；

or

RNTI＝1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+14×80×8×4；

An embodiment of the present application further provides a network side device, including a processor and a communication interface, where:

using the same RACH occasion as 4-step RACH, a different preamble;

a different RACH occasion is used than 4-step RACH.

The embodiment of the network side device corresponds to the embodiment of the method of the network side device, and all implementation processes and implementation manners of the embodiment of the method can be applied to the embodiment of the network side device and can achieve the same technical effect.

Specifically, the embodiment of the application further provides a network side device. As shown in fig. 13, the network device 1300 includes: antenna 131, rf device 132, and baseband device 133. The antenna 131 is connected to a radio frequency device 132. In the uplink direction, the rf device 132 receives information through the antenna 131 and sends the received information to the baseband device 133 for processing. In the downlink direction, the baseband device 133 processes information to be transmitted and transmits the processed information to the rf device 132, and the rf device 132 processes the received information and transmits the processed information through the antenna 131.

The above band processing means may be located in the baseband device 133, and the method performed by the network side device in the above embodiment may be implemented in the baseband device 133, where the baseband device 133 includes a processor 134 and a memory 135.

The baseband device 133 may include, for example, at least one baseband board, on which a plurality of chips are disposed, as shown in fig. 13, wherein one chip, for example, the processor 134, is connected to the memory 135 to call up the program in the memory 135 to perform the network device operation shown in the above method embodiment.

The baseband device 133 may further include a network interface 136 for exchanging information with the radio frequency device 132, such as a Common Public Radio Interface (CPRI).

Specifically, the network side device in the embodiment of the present application further includes: the instructions or programs stored in the memory 135 and executable on the processor 134, the processor 134 calls the instructions or programs in the memory 135 to execute the methods executed by the modules shown in fig. 5, and achieve the same technical effects, which are not described herein for avoiding repetition.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the foregoing Msg1 transmission resource determining method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

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

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction to implement each process of the Msg1 transmission resource determination method embodiment, and can achieve the same technical effect, and for avoiding repetition, the description is omitted here.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip.

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 a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a computer 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 application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A method for determining Msg1 transmission resources, comprising:

the terminal determines the sending parameters of the Msg1 of a random access process of repeated transmission of a Physical Uplink Shared Channel (PUSCH) of the Msg3, wherein the sending parameters comprise Random Access Channel (RACH) opportunity and a lead code, and the sending parameters meet one of the following conditions:

using the same RACH occasion as 4-step RACH, a different preamble;

using a different RACH occasion than 4-step RACH;

2. The method of claim 1, wherein the preamble of Msg1 of the random access procedure of Msg3PUSCH retransmission follows the contention based random access CBRA preamble of Msg1 of 4-step RACH if Msg1 of the random access procedure of Msg3PUSCH retransmission uses the same RACH occasion as 4-step RACH.

3. The method of claim 1, wherein using a RACH occasion different from 4-step RACH comprises one of:

4. The method of claim 3, wherein the preamble of Msg1 of random access procedure for Msg3PUSCH repeated transmission follows the CBRA preamble of 2-step RACH if Msg1 of random access procedure for Msg3PUSCH repeated transmission uses the same RACH occasion as 2-step RACH.

5. The method of claim 3, wherein using an independently configured RACH occasion comprises one of:

6. The method of claim 3, wherein the terminal determining the Msg1 sending parameters of the random access procedure for the Msg3PUSCH repeated transmission comprises:

7. The method of claim 6, wherein the terminal determining the first preamble index set for Msg1 of the random access procedure for Msg3PUSCH repeated transmission comprises:

the terminal determines each physical random access channel PRACH function contained in a first RACH opportunity of Msg1 of a random access process of Msg3PUSCH repeated transmission;

the terminal determines the initial index of the lead code of each PRACH function;

wherein, the first RACH occasion is associated with M synchronization signal blocks SSBs, and a start index of a preamble of an ith PRACH function in a preamble index set of a jth SSB associated with the first RACH occasion is:

8. The method of claim 7, wherein M, K, N _k And

configured by the network side orThe protocol is predefined.

9. The method of claim 7, wherein the PRACH function comprises at least one of:

2-step RACH for contention-based random access;

small data transmission for contention-based random access;

non-contention based random access.

10. The method of claim 9, wherein a mapping order of K PRACH functions included in the first RACH occasion is predefined by a protocol or configured by a system message.

11. The method of claim 7,

if Msg1 of the random access procedure of the Msg3PUSCH repeated transmission uses the same RACH occasion as the 4-step RACH and the 2-step RACH is not configured or the 2-step RACH uses a different RACH occasion from the 4-step RACH, the start index of the CBRA preamble of the Msg1 of the random access procedure of the Msg3PUSCH repeated transmission of the jth SSB associated with the first RACH occasion is:

wherein,

12. The method of claim 7,

if Msg1 of the random access procedure of the Msg3PUSCH repeated transmission uses the same RACH occasion as the 4-step RACH and 2-step RACH is configured, the start index of the CBRA preamble of Msg1 of the random access procedure of the Msg3PUSCH repeated transmission of the jth SSB associated with the first RACH occasion satisfies one of the following conditions:

wherein,

if the network side indicates that the first RACH occasion is used as the 2-step RACH through high-layer signaling, the complementary mask corresponding to the mask configured by the 2-step RACH is used as the mask of the Msg1 of the random access flow of the Msg3PUSCH repeated transmission, and the starting index of the CBRA preamble of the Msg1 of the random access flow of the Msg3PUSCH repeated transmission of the jth SSB associated with the first RACH occasion is as follows:

wherein,

13. The method of claim 7, wherein the terminal determining the Msg1 sending parameters of the random access procedure for the Msg3PUSCH repeated transmission comprises at least one of:

Considering that the second RACH opportunity is unavailable to Msg1 of a random access flow repeatedly transmitted by an Msg3 PUSCH;

In an amount of

14. The method of claim 7, wherein if Msg1 of the random access procedure for Msg3PUSCH repeated transmission uses the same RACH occasion as 2-step RACH, the starting sequence index of CBRA preamble of Msg1 of the random access procedure for Msg3PUSCH repeated transmission of the jth SSB associated with the first RACH occasion is:

wherein Q is the number of CBRA preambles of a 2-step RACH on each SSB associated with the first RACH occasion.

15. The method of claim 7, wherein if Msg1 of the random access procedure with Msg3PUSCH repeated transmission uses the same RACH occasion as 2-step RACH, the start index of CBRA preamble of Msg1 of the random access procedure with Msg3PUSCH repeated transmission of jth SSB associated with the first RACH occasion satisfies one of the following conditions:

if the mask is configured for the 2-step RACH, the complementary mask corresponding to the mask configured for the 2-step RACH is used as the Msg1 of the random access procedure for the Msg3PUSCH repeated transmissionThe start index of the CBRA preamble of Msg1 of the random access procedure for Msg3PUSCH retransmission of the jth SSB associated with the first RACH occasion is:

wherein,

16. The method of claim 3, wherein the terminal sends Msg1 of a random access procedure of Msg3PUSCH repeated transmission according to the sending parameter, and then:

monitoring the Msg2, wherein the terminal judges whether the received Msg2 is the Msg2 corresponding to the Msg1 repeatedly transmitted by the Msg3PUSCH according to the radio network temporary identifier RNTI and/or a random access preamble identifier RAPID contained in the received Msg2.

17. The method as claimed in claim 16, wherein, if the Msg1 of the random access procedure for Msg3PUSCH retransmission uses the same RACH timing as the 4-step RACH, the terminal determines whether the received Msg2 is Msg2 corresponding to the Msg1 of the Msg3PUSCH retransmission according to the RNTI and/or the RAPID included in the received Msg2 comprises:

18. The method as claimed in claim 16, wherein, if the Msg1 of the random access procedure for Msg3PUSCH retransmission uses the same RACH timing as 2-step RACH, the terminal determines whether the received Msg2 is Msg2 corresponding to the Msg1 of the Msg3PUSCH retransmission according to RNTI and/or the RAPID included in the received Msg2 comprises:

and the terminal calculates the RNTI according to a special calculation mode, wherein the special calculation mode is different from the calculation modes of the random access radio network temporary identifier RA-RNTI and the MSGB-RNTI.

19. The method according to claim 17 or 18, wherein the dedicated calculation means is:

RNTI＝1+s_id1+14×t_id1+14×80×f_id1+14×80×8×ul_carrier_id；

or

RNTI＝1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+14×80×8×4；

20. A method for determining Msg1 transmission resources, comprising:

if the sending parameter of the Msg1 meets one of the following conditions, the network side device determines that the Msg1 is Msg1 of a random access procedure of Msg3PUSCH repeated transmission:

using the same RACH occasion as 4-step RACH, a different preamble;

a different RACH occasion is used than 4-step RACH.

21. The method of claim 20 wherein using a RACH occasion different from 4-step RACH comprises one of:

22. The method of claim 21, wherein using an independently configured RACH occasion comprises one of:

23. The method of claim 20, further comprising:

the network side equipment configures M, K, N for the terminal _k And/or

the number of preambles included for one RACH occasion.

24. The method of claim 23, wherein the PRACH capability comprises at least one of:

2-step RACH for contention-based random access;

small data transmission based on contention based random access;

non-contention based random access.

25. The method of claim 20, further comprising one of:

26. The method of claim 25, wherein the dedicated computing means is:

RNTI＝1+s_id1+14×t_id1+14×80×f_id1+14×80×8×ul_carrier_id；

or

RNTI＝1+s_id+14×t_id+14×80×f_id+14×80×8×ul_carrier_id+14×80×8×4；

27. An apparatus for determining Msg1 transmission resources, comprising:

using the same RACH occasion as 4-step RACH, a different preamble;

using a different RACH occasion than 4-step RACH;

28. An apparatus for determining Msg1 transmission resources, comprising:

the receiving module is used for receiving the Msg1 sent by the terminal;

using the same RACH occasion as 4-step RACH, a different preamble;

a different RACH occasion is used than 4-step RACH.

29. A terminal comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, the program or instructions when executed by the processor implementing the steps of the method for determining Msg1 transmission resources according to any of claims 1-19.

30. A network-side device, comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the method for determining Msg1 transmission resources according to any one of claims 20 to 26.

31. A readable storage medium, on which a program or instructions are stored, which program or instructions, when being executed by a processor, carry out the method for determining a Msg1 transmission resource according to any one of the claims 1 to 19 or carry out the steps of the method for determining a Msg1 transmission resource according to any one of the claims 20 to 26.