Information determination method and device, terminal and network side equipment

Abstract

The invention discloses an information determination method and device, a terminal and network side equipment, and belongs to the technical field of communication, and the information determination method comprises the steps that the terminal receives a random access response RAR message sent by the network side equipment, the RAR message comprises at least one MAC sub-protocol data unit PDU, and the MAC sub-protocol data unit PDU comprises at least one MAC sub-protocol data unit PDU; the target MAC sub PDU in the at least one MAC sub PDU comprises target indication information; and the terminal determines the type of the target MAC sub-PDU based on at least one item of the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU and the target indication information.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to an information determination method, device, terminal and network side equipment. Background Art

[0002] In the related art, a terminal receives a Random Access Response (RAR) message sent by a network-side device, determines the type of each MAC sub-PDU by parsing the MAC sub-header of each sub-protocol data unit (PDU) in the RAR message, and then parses the content of each MAC sub-PDU. The type of the MAC sub-PDU of the RAR message is indicated by the indication field information of the MAC sub-header of the MAC sub-PDU, and more bits are required to indicate the type of the MAC sub-PDU, resulting in poor availability of the indication field information in the MAC sub-header. Summary of the invention

[0003] The embodiments of the present application provide an information determination method, apparatus, terminal, and network-side equipment, which can solve the problem of poor availability of indication domain information in a MAC subheader.

[0004] In a first aspect, a method for determining information is provided, comprising:

[0005] The terminal receives a random access response RAR message sent by a network side device, where the RAR message includes at least one MAC sub-protocol data unit PDU, and a target MAC sub-PDU in the at least one MAC sub-PDU includes target indication information;

[0006] The terminal determines the type of the target MAC sub-PDU based on the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU and at least one of the target indication information.

[0007] In a second aspect, a method for determining information is provided, comprising:

[0008] The network side device sends a RAR message to the terminal, where the RAR message includes at least one MAC sub-PDU, and a target MAC sub-PDU in the at least one MAC sub-PDU includes target indication information;

[0009] Among them, at least one item of the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU and the target indication information is used to indicate the type of the target MAC sub-PDU.

[0010] In a third aspect, an information determination device is provided. The terminal includes the information determination device, including:

[0011] A receiving module, configured to receive a random access response RAR message sent by a network side device, wherein the RAR message includes at least one MAC sub-protocol data unit PDU, and a target MAC sub-PDU in the at least one MAC sub-PDU includes target indication information;

[0012] The first determination module is used to determine the type of the target MAC sub-PDU based on the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU and at least one of the target indication information.

[0013] In a fourth aspect, an information determination device is provided, and a network side device includes the information determination device, including:

[0014] A sending module, configured to send a RAR message to a terminal, wherein the RAR message includes at least one MAC sub-PDU, and a target MAC sub-PDU in the at least one MAC sub-PDU includes target indication information;

[0015] Among them, at least one item of the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU and the target indication information is used to indicate the type of the target MAC sub-PDU.

[0016] In a fifth aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0017] In a sixth aspect, a network side device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.

[0018] In a seventh aspect, a terminal is provided, including a processor and a communication interface, wherein the communication interface is used to:

[0019] Receiving a random access response RAR message sent by a network side device, the RAR message includes at least one MAC sub-protocol data unit PDU, and a target MAC sub-PDU in the at least one MAC sub-PDU includes target indication information;

[0020] The processor is used to determine the type of the target MAC sub-PDU based on the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU and at least one of the target indication information.

[0021] In an eighth aspect, a network side device is provided, including a processor and a communication interface, wherein the communication interface is used to:

[0022] Used to send a RAR message to a terminal, where the RAR message includes at least one MAC sub-PDU, and a target MAC sub-PDU in the at least one MAC sub-PDU includes target indication information;

[0023] Among them, at least one item of the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU and the target indication information is used to indicate the type of the target MAC sub-PDU.

[0024] In a ninth aspect, an information determination system is provided, comprising: a terminal and a network side device, wherein the terminal can be used to execute the steps of the method described in the first aspect, and the network side device can be used to execute the steps of the method described in the second aspect.

[0025] In the tenth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0026] In the eleventh aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect, or to implement the method described in the second aspect.

[0027] In the twelfth aspect, a computer program / program product is provided, wherein the computer program / program product is stored in a storage medium, and the computer program / program product is executed by at least one processor to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0028] In an embodiment of the present application, a terminal receives a random access response RAR message sent by a network side device, the RAR message includes at least one MAC sub-protocol data unit PDU, and the target MAC sub-PDU in the at least one MAC sub-PDU includes target indication information; the terminal determines the type of the target MAC sub-PDU based on the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU and at least one item of the target indication information. In this way, the type of the target MAC sub-PDU is indicated by the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU, and the type of the MAC sub-PDU is indicated by the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU, which can reduce the indication field information indicating the type of the MAC sub-PDU, thereby improving the availability of the indication field information in the MAC sub-header; or, the type of the target MAC sub-PDU is indicated by the target indication information, which can support the indication of the type of the MAC sub-PDU in the RAR message of the four-step random access process through 1-bit target indication information, or support the indication of the type of the MAC sub-PDU in the RAR message of the two-step random access process through target indication information not exceeding 2 bits, which can improve the availability of the indication field information in the MAC sub-header. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a block diagram of a wireless communication system to which the embodiments of the present application can be applied;

[0030] Figure 2 It is a schematic diagram of a RAR message format in the related art;

[0031] Figure 3 This is one of the format diagrams of a subheader of a MAC sub-PDU in the related art;

[0032] Figure 4 This is a second schematic diagram of the format of a subheader of a MAC sub-PDU in the related art;

[0033] Figure 5 It is a format diagram of a MAC RAR unit or a FallbackRAR unit in the related art;

[0034] Figure 6 This is a third schematic diagram of the format of a subheader of a MAC sub-PDU in the related art;

[0035] Figure 7 This is a fourth schematic diagram of the format of a subheader of a MAC sub-PDU in the related art;

[0036] Figure 8This is a fifth schematic diagram of the format of a subheader of a MAC sub-PDU in the related art;

[0037] Fig. 9 It is one of the flow charts of an information determination method provided in an embodiment of the present application;

[0038] Fig.10 This is one of the format diagrams of a subheader of a MAC sub-PDU provided in an embodiment of the present application;

[0039] Fig.11 This is a second schematic diagram of the format of a subheader of a MAC sub-PDU provided in an embodiment of the present application;

[0040] Fig.12 This is a third schematic diagram of the format of a subheader of a MAC sub-PDU provided in an embodiment of the present application;

[0041] Fig.13 This is a fourth schematic diagram of the format of a subheader of a MAC sub-PDU provided in an embodiment of the present application;

[0042] Fig.14 This is a fifth schematic diagram of the format of a subheader of a MAC sub-PDU provided in an embodiment of the present application;

[0043] Fig.15 This is a sixth schematic diagram of the format of a subheader of a MAC sub-PDU provided in an embodiment of the present application;

[0044] Fig.16 This is the seventh schematic diagram of the format of a subheader of a MAC sub-PDU provided in an embodiment of the present application;

[0045] Fig.17 This is an eighth schematic diagram of the format of a subheader of a MAC sub-PDU provided in an embodiment of the present application;

[0046] Fig.18 This is one of the format diagrams of a RAR message provided in an embodiment of the present application;

[0047] Fig.19 This is the second flowchart of an information determination method provided in an embodiment of the present application;

[0048] Fig. 20 This is a second schematic diagram of a format of a RAR message provided in an embodiment of the present application;

[0049] Fig.21 This is a third schematic diagram of a format of a RAR message provided in an embodiment of the present application;

[0050] Fig. 22 This is a fourth schematic diagram of a format of a RAR message provided in an embodiment of the present application;

[0051] Fig.23 This is a fifth schematic diagram of a format of a RAR message provided in an embodiment of the present application;

[0052] Fig.24 It is one of the format diagrams of a MAC RAR unit or a FallbackRAR unit provided in an embodiment of the present application;

[0053] Fig.25 This is a second format diagram of a MAC RAR unit or a FallbackRAR unit provided in an embodiment of the present application;

[0054] Fig.26 This is a ninth schematic diagram of the format of a subheader of a MAC sub-PDU provided in an embodiment of the present application;

[0055] Fig. 27 It is one of the structural schematic diagrams of an information determination device provided in an embodiment of the present application;

[0056] Fig.28 This is a second structural diagram of an information determination device provided in an embodiment of the present application;

[0057] Fig.29 It is a structural diagram of a communication device provided in an embodiment of the present application;

[0058] Fig.30 is a schematic diagram of the structure of a terminal provided in an embodiment of the present application;

[0059] Fig.31 It is a structural diagram of a network side device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0060] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0061] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same type, and the number of objects is not limited, for example, the first object can be one or more. In addition, "or" in the specification and claims represents at least one of the connected objects, for example: "A or B" covers three schemes, namely, Scheme 1: including A and excluding B; Scheme 2: including B and excluding A; Scheme 3: including both A and B.

[0062] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can 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 technology can be used for the systems and radio technologies mentioned above as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following descriptions, but these technologies can also be applied to applications other than NR system applications, such as the 6th generation (6 th Generation, 6G) communication system.

[0063] Figure 1A block diagram of a wireless communication system applicable to the embodiments of the present application is shown. The wireless communication system includes a terminal 11 and a network side device 12. Among them, the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), augmented reality (augmentedreality, AR) / virtual reality (virtual reality, VR) equipment, a robot, a wearable device (WearableDevice), a vehicle-mounted equipment (VUE), a pedestrian terminal (PUE), a smart home (home equipment with wireless communication functions, such as refrigerators, televisions, washing machines or furniture, etc.), a game console, a personal computer (personal computer, PC), a teller machine or a self-service machine and other terminal side devices, and the wearable device includes: a smart watch, a smart bracelet, a smart headset, a smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), a smart wristband, a smart clothing, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device 12 may also be referred to as a radio access network device, a radio access network (RAN), a radio access network function or a radio access network unit. The access network device 12 may include a base station, a WLAN access point or a WiFi node, etc. The base station may be referred to as a node B, an evolved node B (eNB), 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 home B node, a home evolved B node, a transmitting and receiving point (TRP) or other appropriate terms in the field, as long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary, it should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.The core network equipment may include but is not limited to at least one of the following: core network node, core network function, mobility management entity (Mobility Management Entity, MME), access mobility management function (Access and Mobility Management Function, AMF), session management function (Session Management Function, SMF), user plane function (User Plane Function, UPF), policy control function (Policy Control Function, PCF), policy and charging rules function unit (Policy and Charging Rules Function, PCRF), edge application service discovery function (Edge Application Server Discovery Function, EASDF), unified data management (Unified Data Management, UDM), unified data storage (Unified Data Repository, UDR), home user server (Home Subscriber Server, HSS), centralized network configuration (CNC), network storage function (Network Repository Function, NRF), network exposure function (Network Exposure Function, NEF), local NEF (Local NEF, or L-NEF), binding support function (Binding Support Function, BSF), application function (Application Function, AF), etc. It should be noted that in the embodiments of the present application, only the core network device in the NR system is introduced as an example, and the specific type of the core network device is not limited.

[0064] For ease of understanding, some contents involved in the embodiments of the present application are described below:

[0065] 1. Message 2 format of the 4-step Random Access Channel (RACH) process

[0066] In the 4-step random access process, the format of RACH message (msg) 2 (RAR message) is as follows Figure 2 shown.

[0067] The RAR message contains two formats of subPDU and padding:

[0068] A1 Type:

[0069] SubPDU containing BI: contains only a 1-byte subheader, which is used to carry RACH fallback information;

[0070] A2 Type:

[0071] SubPDU containing RAPID: There are two types. One is a format containing only a 1-byte subheader, and the other is a format containing a 1-byte subheader and a MAC RAR unit; this type of subPDU is used to carry a response to a detected preamble.

[0072] Padding: It contains all padding bits.

[0073] The RAR message contains at least one of the A1 type subPDU or the A2 type subPDU, and may contain Padding.

[0074] The format of A1 type subPDU is as follows Figure 3 As shown in the figure, the format of the MAC subheader is: E / T / R / R / BI; the format of the subheader of the A2 type subPDU is as follows Figure 4 As shown in the figure, the format of MAC subheader is: E / T / RAPID.

[0075] The meanings of the various indication domains (or fields) in the MAC subheader of the A1 / A2 subPDU are as follows:

[0076] E: If the E field (or domain) is set to 1, this subPDU is not the last subPDU of the RAR message, that is, there are other subPDUs behind it; if the E field is set to 0, this subPDU is the last subPDU. If there are other remaining bits in the RAR message after this subPDU, the remaining bits are padding. Specifically, the E extension field is a flag indicating whether the MAC subPDU including the MAC subheader is the last MAC subPDU in the MAC PDU. The E field is set to 1 to indicate that there is at least another MAC subPDU behind it. The E field is set to 0 to indicate that the MAC subPDU including this MAC subheader is the last MAC subPDU in the MAC PDU (The Extension field is a flag indicating if the MACsubPDU including this MAC subheader is the last MAC subPDU or not in the MAC PDU. The E field is set to 1 to indicate at least another MAC subPDU follows. The E field is set to 0 to indicate that the MAC subPDU including this MAC subheader is the last MAC subPDU in the MAC PDU).

[0077] T: 0 indicates that the subPDU MAC subheader contains a BI field, and 1 indicates that the subPDU MAC subheader contains a RAPID field. Specifically, the T Type field is a flag indicating whether the MAC subheader contains a Random Access Preamble ID or a Backoff Indicator. The T field is set to 0 to indicate the presence of a Backoff Indicator field in the subheader (BI). The Tfield is set to 1 to indicate the presence of a Random Access Preamble ID field in the subheader (RAPID).

[0078] R: Reserved bit, set to 0.

[0079] BI: The Backoff Indicator field is used to indicate the overload condition of the cell. The length is 4 bits. Specifically, the Backoff Indicator field identifies the overload condition in the cell. The size of the BI field is 4 bits.

[0080] RAPID: The Random Access Preamble IDentifier (RAPID) field is used to indicate the index information of the random access preamble detected / received by the cell, and the length is 6 bits. Specifically, the size of the RAPID field is 6 bits. If the RAPID in the MAC subheader of a MAC subPDU corresponds to one of the Random Access Preambles configured for SI request, MAC RAR is not included in the MAC subPDU.

[0081] For E / T / RAPID MAC subheader, the corresponding MAC RAR unit format is as follows Figure 5 shown.

[0082] In current practical applications, the total length of the MAC RAR unit is always 7 bytes.

[0083] The MAC RAR unit corresponding to the E / T / RAPID MAC subheader can be understood as Figure 3 MAC RAR in MAC subPDU 3.

[0084] However, in some cases, the information carried by some domains is unnecessary. In the existing mechanism, the UE does not need to apply the relevant domains. For example, in the CFRA process, the temporary cell radio network temporary identifier (Cell RNTI, C-RNTI) will not be used; in the non-contention random access (Contention Free Random Access, CFRA) process triggered by the arrival of downlink data, the UL grant and the Temporary C-RNTI will not be used.

[0085] 2. Message B format for two-step RACH

[0086] In the 2-step random access process, the format of RACH MsgB (RAR message) includes three formats of subPDU and padding.

[0087] B1 Type:

[0088] SubPDU containing BI: contains only a 1-byte subheader, which is used to carry RACH fallback information.

[0089] B2 Type:

[0090] SubPDU containing FallbackRAR.

[0091] B3 Type:

[0092] The subPDU containing SuccessRAR.

[0093] Padding: It contains all padding bits.

[0094] The RAR message contains at least one or more subPDUs of the B1 type, B2 type, or B3 type, and may contain Padding.

[0095] The subheader format of subPDU of type B1, B2, and B3 is as follows Figure 6 , Figure 7 and Figure 8 shown.

[0096] The meanings of each indicator field are as follows:

[0097] E: The extension field is a flag indicating whether the MAC sub-PDU including the MAC sub-header is the last MAC sub-PDU in the MAC PDU (not a MAC sub-PDU for carrying a MAC service data unit (SDU)). The E field is set to 1 to indicate that there is at least another MAC sub-PDU (not a MAC sub-PDU for carrying a MAC SDU) following it. The E field is set to 0 to indicate that the MAC subPDU including this MAC subheader is the last MAC subPDU (other than MACsubPDU for MAC SDU) in the MAC PDU (The Extension field is a flag indicating if the MACsubPDU including this MAC subheader is the last MAC subPDU (other than MACsubPDU for MAC SDU) or not in the MAC PDU. The E field is set to 1 to indicateat least another MAC subPDU (other than MAC subPDU for MAC SDU) follows. The Efield is set to 0 to indicate that the MAC subPDU including this MAC subheader is the last MAC subPDU (other than MAC subPDU for MAC SDU) in the MAC PDU).

[0098] T1: The T1 field is a flag indicating whether the MAC subheader contains a Random Access Preamble ID or T2. The T1 field is set to 1 to indicate the presence of a Random Access Preamble ID field in the subheader (RAPID). The T1 field is set to 0 to indicate the presence of T2 field in the subheader. (The T1 field is a flag indicating whether the MAC subheader contains a Random Access Preamble ID or T2. The T1 field is set to 1 to indicate the presence of a Random Access Preamble ID field in the subheader (RAPID). The T1 field is set to 0 to indicate the presence of T2 field in the subheader).

[0099] T2: The T2 field is a flag indicating whether the MAC subheader contains a Backoff Indicator (BI) or a MAC SDU indicator (S). The T2 field is set to 0 to indicate the presence of a Backoff Indicator field in the subheader. The T2 field is set to 1 to indicate the presence of the S field in the subheader.

[0100] S: The S field indicates whether there is a "MAC subPDU for carrying MAC SDU" following the MAC subPDU including this MAC subheader; the S field is set to 1 to indicate the presence of "MAC subPDU for MAC SDU". The S field is set to 0 to indicate the absence of "MAC subPDU for MAC SDU" (This field indicates whether'MAC subPDU(s)for MACSDU'follow the MAC subPDU including this MAC subheader or not; The Sfield isset to 1to indicate presence of'MAC subPDU(s)for MAC SDU'.The S field is set to 0to indicate absence of'MAC subPDU(s)for MAC SDU').

[0101] R: Reserved bit, set to 0.

[0102] BI: The Backoff Indicator field identifies the overload condition in the cell. The size of the BI field is 4 bits.

[0103] RAPID: The Random Access Preamble IDentifier field identifies the transmitted Random Access Preamble. The size of the RAPID field is 6 bits.

[0104] For the FallbackRAR MAC sub-PDU, the corresponding FallbackRAR unit format is as follows Figure 5 shown.

[0105] The following, in conjunction with the accompanying drawings, describes in detail the information determination method, apparatus, terminal and network side equipment provided in the embodiments of the present application through some embodiments and their application scenarios.

[0106] See also Fig. 9 , Fig. 9 is a flow chart of an information determination method provided in an embodiment of the present application, such as Fig. 9 As shown, the information determination method includes the following steps:

[0107] Step 101: The terminal receives a random access response RAR message sent by a network side device, where the RAR message includes at least one MAC sub-protocol data unit PDU, and a target MAC sub-PDU in the at least one MAC sub-PDU includes target indication information.

[0108] The RAR message may also be described as MAC RAR; or, the RAR message may also be described as MAC PDU (RAR) or MAC PDU (MSGB). When the RAR message is used for four-step random access, the RAR message may also be described as MAC PDU (RAR), which consists of one or more MAC subPDUs and optionally padding; when the RAR message is used for two-step random access, the RAR message may also be described as MAC PDU (MSGB).

[0109] The MAC subPDU is MAC subPDU. The target MAC subPDU (subPDU) may be any one of the at least one MAC subPDU, that is, the target MAC subPDU may be any one of the MAC subPDUs in the RAR message.

[0110] In one implementation, when the RAR message is used for four-step random access, the RAR message may be RACH Msg2.

[0111] In one implementation, when the RAR message is used for two-step random access, the RAR message may be RACH MsgB.

[0112] Step 102: The terminal determines the type of the target MAC sub-PDU based on the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU and at least one item of the target indication information.

[0113] In one embodiment, the terminal determines the type of the target MAC sub-PDU based on the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU and at least one item of the target indication information, including: when the first indication information is a first preset value, the terminal determines that the target MAC sub-PDU is a first type of MAC sub-PDU or a second type of MAC sub-PDU based on the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU, the first type of MAC sub-PDU includes backoff indication information, and the second type of MAC sub-PDU includes padding.

[0114] Furthermore, the RAR message is a message of a four-step random access process. When the first indication information is a second preset value, the terminal determines that the target MAC sub-PDU is a third type of MAC sub-PDU, and the third type of MAC sub-PDU includes a random access preamble identifier RAPID information.

[0115] The backoff indication information may include a backoff indicator (BI).

[0116] Among them, the RAPID information may include RAPID.

[0117] It should be noted that the RAR message has the following limitations: if the BI is carried, the MAC subPDU carrying the BI must be the first MAC subPDU in the RAR message; the padding must be placed at the end of the RAR message, that is, within the RAR message, there should be no other subPDUs after the padding.

[0118] In one embodiment, when the target MAC sub-PDU is the first MAC sub-PDU among the at least one MAC sub-PDU, the terminal determines that the target MAC sub-PDU is the first type of MAC sub-PDU; when the target MAC sub-PDU is not the first MAC sub-PDU among the at least one MAC sub-PDU, the terminal determines that the target MAC sub-PDU is the second type of MAC sub-PDU.

[0119] In the related art, the type of each subPDU in the RAR message is indicated by the E field and the T field in the four-step random access process. The meaning of each indication field in the subPDU is as follows:

[0120] E: If the E field is set to 1, this subPDU is not the last subPDU of the RAR message, that is, there are other subPDUs behind it; if the E field is set to 0, this subPDU is the last subPDU. If there are other remaining bits in the RAR message after this subPDU, the remaining bits are padding;

[0121] T: 0 means that this subPDU contains BI, 1 means that this subPDU contains RAPID.

[0122] by Figure 2 For example, the E field and T field of the subheader in each subPDU are set as shown in Table 1.

[0123] Table 1

[0124]

[0125]

[0126] Among them, for the first MAC subPDU, the E field value is 1, which indicates that there is a next subPDU after the MAC subPDU, and the T field value is 0, which indicates that the MAC subPDU contains BI; for the second MAC subPDU, the E field value is 1, which indicates that there is a next subPDU after the MAC subPDU, and the T field value is 1, which indicates that the MAC subPDU contains RAPID; for the nth MAC subPDU, the E field value is 0, which indicates that the MAC subPDU is the last MAC subPDU. It should be noted that in the related art, padding does not belong to the MAC subPDU in the four-step random access process.

[0127] It should be noted that in the related art, in the four-step random access process, the type of MAC sub-PDU in the RAR message is indicated by the E field and the T field, which are a total of 2 bits; in the two-step random access process, the type of MAC sub-PDU in the RAR message is indicated by the E field, the T1 field and the T2 field, which are a total of 3 bits. The design is not reasonable, and the availability of the indication domain information in the MAC subheader is poor.

[0128] In this embodiment, the first indication information may be 1-bit indication information. This embodiment supports indicating the type of MAC subPDU by 1-bit indication information and the sorting information of MAC subPDU. This embodiment can distinguish the first type of MAC subPDU including backoff indication information or the second type of MAC subPDU including Padding by using the sorting information of the target MAC subPDU in the at least one MAC subPDU. This embodiment can use the value of the first indication information to indicate the third type of MAC subPDU including RAPID information. Compared with the related art that indicates the type of MAC subPDU in the RAR message by using the E field and the T field in total of 2 bits, the indication field information indicating the type of MAC subPDU can be reduced. Since the indication field used to indicate the type of MAC subPDU is reduced, the newly added reserved field can be used to indicate the format of the MAC RAR unit, avoiding the MAC RAR unit from carrying unnecessary information, thereby reducing the size of the Msg2 message and reducing the signaling overhead; or indicating additional information to improve the system's utilization efficiency of wireless resources.

[0129] In one implementation, the MAC RAR unit is a MAC RAR included in a third type of MAC sub-PDU.

[0130] In an embodiment of the present application, a terminal receives a random access response RAR message sent by a network side device, the RAR message includes at least one MAC sub-protocol data unit PDU, and the target MAC sub-PDU in the at least one MAC sub-PDU includes target indication information; the terminal determines the type of the target MAC sub-PDU based on the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU and at least one item of the target indication information. In this way, the type of the target MAC sub-PDU is indicated by the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU, and the type of the MAC sub-PDU is indicated by the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU, which can reduce the indication field information indicating the type of the MAC sub-PDU, thereby improving the availability of the indication field information in the MAC sub-header; or, the type of the target MAC sub-PDU is indicated by the target indication information, which can support the indication of the type of the MAC sub-PDU in the RAR message of the four-step random access process through 1-bit target indication information, or support the indication of the type of the MAC sub-PDU in the RAR message of the two-step random access process through target indication information not exceeding 2 bits, which can improve the availability of the indication field information in the MAC sub-header.

[0131] Optionally, in a case where the RAR message is a message of a four-step random access process, the target indication information includes first indication information, and the terminal determines the type of the target MAC sub-PDU based on the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU and at least one item of the target indication information, including at least one of the following:

[0132] When the first indication information is a first preset value, the terminal determines, based on the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU, that the target MAC sub-PDU is a first type of MAC sub-PDU or a second type of MAC sub-PDU, wherein the first type of MAC sub-PDU includes backoff indication information, and the second type of MAC sub-PDU includes padding;

[0133] In a case where the first indication information is a second preset value, the terminal determines that the target MAC sub-PDU is a third type of MAC sub-PDU, and the third type of MAC sub-PDU includes random access preamble identifier RAPID information.

[0134] The first preset value and the second preset value are different values. For example, the first preset value may be 0 and the second preset value may be 1; or the first preset value may be 1 and the second preset value may be 0; this is not limited in this embodiment.

[0135] In one implementation, the backoff indication information may include BI, the RAPID information may include RAPID, the first indication information may be indicated by a T field, the first preset value may be 0, and the second preset value may be 1. In the case where the RAR message is used for four-step random access, the MAC subheader formats of the three types of MAC subPDUs of the RAR message are as follows: Fig.10 , Fig.11 and Fig.12 As shown, Fig.10 As shown, the format of the MAC subheader of the first type of MAC subPDU is: T / R / R / R / BI; Fig.11 As shown, the format of the MAC subheader of the third type of MAC subPDU is: T / R / RAPID; Fig.12 As shown, the format of the MAC subheader of the second type of MAC subPDU is: T / R / R / R / R / R / R / R, where R is a reserved field.

[0136] Optionally, the first type of MAC sub PDU is a MAC subheader including a BI (or BI field), the second type of MAC sub PDU includes a MAC subheader and padding, the third type of MAC subPDU is a MAC subheader including a RAPID (or RAPID field), or the third type of MAC subPDU includes a MAC subheader (the MAC subheader includes a RAPID) and a MAC RAR unit.

[0137] In one implementation, the first indication information is the first bit in the MAC subheader in the target MAC sub-PDU.

[0138] For example, when the RAR message is used for four-step random access (i.e., the RAR message is a message for a four-step random access process), the T field of the MAC subPDU (i.e., MAC subPDU) takes a value of 0, indicating that the MAC subPDU includes a BI, or the MAC subPDU includes a Padding. When the MAC subPDU is the first MAC subPDU of the RAR message, it indicates that the MAC subPDU includes a BI; when the MAC subPDU is the Nth MAC subPDU of the RAR message, it indicates that the MAC subPDU includes a Padding, where N>1. Furthermore, when the T field of the MAC subPDU takes a value of 1, it indicates that the MAC subPDU includes a RAPID.

[0139] In this embodiment, the first indication information may be 1-bit indication information, and this embodiment supports indicating the type of MAC subPDU through 1-bit indication information and MAC subPDU sorting information. Compared with the related art in which the type of MAC subPDU in the RAR message is indicated by 2 bits in total of the E field and the T field, the newly added reserved field R can be used to indicate other information due to the reduction of the indication field used to indicate the type of MAC subPDU, thereby reducing the size of the Msg2 message, reducing signaling overhead or indicating additional information, and improving the system's efficiency in utilizing wireless resources. For example: for a subheader containing the field T / R / RAPID, when RAPID corresponds to the preamble of the Rel-18 Msg3 repetition under an independent random access opportunity (Rachoccasion, RO), the reserved R can be used to instruct the UE to use different uplink beams to perform repeated transmissions of Msg3. For example, if Fig.13 As shown, Fig.11The newly added reserved field R can be used as the B field. When B is the first preset value (for example, 1), it indicates that the UE uses different uplink beams for repeated transmission in Msg3; when B is the second preset value (for example, 0), it indicates that the UE uses the same uplink beam for repeated transmission in Msg3.

[0140] It should be noted that, when the first indication information is the second preset value, the terminal determines that the target MAC sub-PDU is a third type of MAC sub-PDU, and the third type of MAC sub-PDU includes random access preamble identifier RAPID information, wherein the target MAC sub-PDU does not include fifth indication information, and the fifth indication information is used to indicate whether the target MAC sub-PDU is the last MAC sub-PDU in the at least one MAC sub-PDU. The fifth indication information can be the E field in message 2 of the four-step random access process in the related technology.

[0141] In this implementation, when the first indication information is a first preset value, the terminal determines whether the target MAC subPDU is a first type of MAC subPDU or a second type of MAC subPDU based on the sorting information of the target MAC subPDU in the at least one MAC subPDU, the first type of MAC subPDU includes backoff indication information, and the second type of MAC subPDU includes Padding. In this way, when the first indication information is a first preset value, the sorting information of the target MAC subPDU in the at least one MAC subPDU can be used to distinguish the first type of MAC subDU including backoff indication information or the second type of MAC subDU including Padding.

[0142] In this implementation, when the first indication information is a second preset value, the terminal determines that the target MAC sub-PDU is a third type of MAC sub-PDU, and the third type of MAC sub-PDU includes random access preamble identifier RAPID information, thereby being able to use the value of the first indication information to indicate the third type of MAC sub-PDU including RAPID information.

[0143] It should be noted that the first indication information can be 1-bit indication information, so that the target MAC sub-PDU can be indicated as a first type of MAC sub-PDU including backoff indication information, or a second type of MAC sub-PDU including Padding, or a third type of MAC sub-PDU including RAPID information through 1-bit indication field information (i.e., the first indication information) and the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU. Compared with the related art in which 2 bits of indication field information are used to indicate the three types of MAC sub-PDUs used for four-step random access, the indication field information indicating the type of the MAC sub-PDU can be reduced. Since the indication field used to indicate the MAC subPDU type is reduced, the newly added reserved field can be used to indicate the format of the MAC RAR unit, avoiding the MAC RAR unit from carrying unnecessary information, thereby reducing the size of the Msg2 message and reducing the signaling overhead; or indicating additional information to improve the system's utilization efficiency of wireless resources.

[0144] Optionally, in the case where the RAR message is a message of a two-step random access process, the target indication information includes first indication information or second indication information, and the terminal determines the type of the target MAC sub-PDU based on the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU and at least one of the target indication information, including at least one of the following:

[0145] In the case where the second indication information is a third preset value, if the first indication information is a first preset value, the terminal determines that the target MAC sub-PDU is a first type of MAC sub-PDU or a second type of MAC sub-PDU based on the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU, the first type of MAC sub-PDU includes backoff indication information, and the second type of MAC sub-PDU includes Padding;

[0146] In the case where the second indication information is the third preset value, if the first indication information is the second preset value, the terminal determines that the target MAC sub-PDU is a fourth type of MAC sub-PDU, and the fourth type of MAC sub-PDU is a Success Random Access Response SuccessRAR MAC sub-PDU;

[0147] When the second indication information is a fourth preset value, the terminal determines that the target MAC sub-PDU is a fifth type of MAC sub-PDU, and the fifth type of MAC sub-PDU is a fallback random access response FallbackRAR MAC sub-PDU.

[0148] The first preset value and the second preset value are different values. For example, the first preset value may be 0 and the second preset value may be 1; or the first preset value may be 1 and the second preset value may be 0; this is not limited in this embodiment.

[0149] The third preset value and the fourth preset value are different values. For example, the third preset value may be 0 and the fourth preset value may be 1; or the third preset value may be 1 and the fourth preset value may be 0; this is not limited in this embodiment.

[0150] In one implementation, the backoff indication information may include BI, the first indication information may be indicated by the T2 field, the second indication information may be indicated by the T1 field, the first preset value may be 0, the second preset value may be 1, the third preset value may be 0, and the fourth preset value may be 1.

[0151] In one implementation, when a RAR message is used for two-step random access (ie, the RAR message is a message for a two-step random access process), the MAC subheader formats of multiple types of MAC subPDUs of the RAR message are as follows: Fig.14 , Fig.15 and Fig.16 As shown, Fig.14 MAC subheader of the subPDU of the fifth type of FallbackRAR; Fig.15 A MAC subheader for a subPDU of the first type including a BI; Fig.16 It is the MAC subheader of the subPDU of the fourth type of SuccessRAR.

[0152] For example, when the RAR message is used for two-step random access, the T1 field of the subPDU takes a value of 1, indicating that the subPDU is a subPDU of FallbackRAR. The T1 field of the subPDU takes a value of 0, indicating that the subPDU includes a BI, or the subPDU is a subPDU of SuccessRAR, or the subPDU includes Padding. When the T1 field of the subPDU takes a value of 0 and the T2 field of the subPDU takes a value of 0, the subPDU includes a BI (or a BI field), or the subPDU includes Padding; when the subPDU is the first MAC subPDU of the RAR message, it indicates that the subPDU includes a BI; when the subPDU is the Nth MAC subPDU of the RAR message, it indicates that the subPDU includes Padding, N>1. When the T1 field of the subPDU takes a value of 0 and the T2 field of the subPDU takes a value of 1, the subPDU is a subPDU of SuccessRAR.

[0153] The first indication information may be 1-bit indication information, and the second indication information may be 1-bit indication information.

[0154] Optionally, the first type of MAC sub PDU is a MAC subheader including BI, the second type of MAC subPDU includes a MAC subheader and padding, the subheader of the fourth type of MAC subPDU is a MAC subheader of SuccessRARsubPDU, and the fourth type of MAC subPDU includes a MAC subheader and SuccessRAR; the subheader of the fifth type of MAC subPDU is a MAC subheader of FallbackRAR subPDU, and the fifth type of MACsubPDU includes a MAC subheader and FallbackRAR.

[0155] In one implementation, the second indication information is the first bit in the MAC subheader in the target MAC sub-PDU; the first indication information is the second bit in the MAC subheader in the target MAC sub-PDU.

[0156] It should be noted that, since the indication field used to indicate the subPDU type has been reduced, the newly added reserved field R can be used to indicate other information. For example, the newly added reserved field can be used to indicate the format of the FallbackRAR unit to avoid the FallbackRAR unit carrying unnecessary information, thereby reducing the size of the MsgB message and reducing signaling overhead; or indicating additional information to improve the system's efficiency in utilizing wireless resources. For example: for the subheader of the SuccessRAR MAC subPDU, when the RAPID corresponds to the separate RO Rel-18 MO-SDT or the preamble of MO-SDT, the reserved R can be used to indicate how many MAC subPDUs for carrying MAC SDUs are connected in series after the sussessRAR. For example, if Fig.17 As shown, Fig.16 The newly added reserved field R can be combined with the original S field as the S field, and the length of the S field can be N bits (N>=2). Taking N=2 as an example, Fig.18 As shown, S=00 (or the first value), indicating that no MAC subPDU for carrying MAC SDU is concatenated after this sussessRAR; S=01 (or the second value), indicating that the UE concatenates 1 MAC subPDU for carrying MAC SDU after the sussessRAR; S=10 (or the third value), indicating that the UE concatenates 2 consecutive MAC subPDUs for carrying MAC SDU after the sussessRAR; S=11 (or the fourth value), indicating that the UE concatenates 3 consecutive MAC subPDUs for carrying MAC SDU after the sussessRAR.

[0157] In one implementation, the FallbackRAR unit is the FallbackRAR included in the fifth type of MAC sub-PDU.

[0158] In this implementation, when the second indication information is the third preset value, if the first indication information is the first preset value, the terminal determines whether the target MAC subPDU is a first type of MAC subPDU or a second type of MAC subPDU based on the sorting information of the target MAC subPDU in the at least one MAC subPDU, the first type of MAC subPDU includes backoff indication information, and the second type of MAC subPDU includes Padding. In this way, when the second indication information is the third preset value and the first indication information is the first preset value, the sorting information of the target MAC subPDU in the at least one MAC subPDU can be used to distinguish between the first type of MAC subPDU including backoff indication information or the second type of MAC subPDU including Padding.

[0159] In this implementation, when the second indication information is the third preset value, if the first indication information is the second preset value, the terminal determines that the target MAC sub-PDU is a fourth type of MAC sub-PDU, and the fourth type of MAC sub-PDU is a successful random access response SuccessRAR MAC sub-PDU, thereby being able to use the values ​​of the second indication information and the first indication information to indicate the fourth type of SuccessRAR MAC sub-PDU.

[0160] In this implementation, when the second indication information is the fourth preset value, the terminal determines that the target MAC sub-PDU is the fifth type of MAC sub-PDU, and the fifth type of MAC sub-PDU is a fallback random access response FallbackRAR MAC sub-PDU, so that the value of the second indication information can be used to indicate the fifth type of FallbackRAR MAC sub-PDU.

[0161] It should be noted that the first indication information may be 1-bit indication information, and the second indication information may be 1-bit indication information, so that the target MAC sub-PDU can be indicated as a first type of MAC sub-PDU including backoff indication information, or a second type of MAC sub-PDU including Padding, or a fourth type of MAC sub-PDU of SuccessRAR, or a fifth type of MAC sub-PDU of FallbackRAR through indication field information of no more than 2 bits (i.e., the second indication information, or the first indication information and the second indication information) and the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU. Compared with the related art in which the four types of MAC sub-PDUs used for two-step random access are indicated by indication field information of no more than 3 bits, the indication field information indicating the type of the MAC sub-PDU can be reduced. Since the newly added reserved field for indicating the type of the MACsubPDU is reduced, the format of the MAC RAR unit can be indicated, thereby avoiding the MAC RAR unit from carrying unnecessary information, thereby reducing the size of the Msg2 message and reducing the signaling overhead; or indicating additional information to improve the system's utilization efficiency of wireless resources.

[0162] Optionally, the terminal determines, based on sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU, that the target MAC sub-PDU is a first type of MAC sub-PDU or a second type of MAC sub-PDU, including:

[0163] In a case where the target MAC sub-PDU is the first MAC sub-PDU in the at least one MAC sub-PDU, the terminal determines that the target MAC sub-PDU is a MAC sub-PDU of the first type;

[0164] or

[0165] In a case where the target MAC sub-PDU is not the first MAC sub-PDU among the at least one MAC sub-PDU, the terminal determines that the target MAC sub-PDU is the second type of MAC sub-PDU.

[0166] In this implementation, when the target MAC sub-PDU is the first MAC sub-PDU in the at least one MAC sub-PDU, the terminal determines that the target MAC sub-PDU is the first type of MAC sub-PDU, or when the target MAC sub-PDU is not the first MAC sub-PDU in the at least one MAC sub-PDU, the terminal determines that the target MAC sub-PDU is the second type of MAC sub-PDU. In this way, whether the target MAC sub-PDU is ranked first in the at least one MAC sub-PDU can be used to distinguish the first type of MAC sub-PDU including backoff indication information or the second type of MAC sub-PDU including Padding.

[0167] Optionally, the first indication information is 1-bit indication information.

[0168] Optionally, when the RAR message is a message of a four-step random access process:

[0169] like Fig.10 As shown, if the target MAC sub-PDU is a MAC sub-PDU of the first type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of the first indication information, 3 bits of reserved field, and 4 bits of backoff indication information;

[0170] or

[0171] like Fig.12 As shown, if the target MAC sub-PDU is a MAC sub-PDU of the second type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of the first indication information, and a 7-bit reserved field;

[0172] or

[0173] like Fig.11 As shown, if the target MAC sub-PDU is a MAC sub-PDU of the third type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of the first indication information, 1 bit of the reserved field, and 6 bits of RAPID information.

[0174] Among them, Figure 10 to Figure 11 As shown, the first indication information includes a T field, the reserved field is an R field, the backoff indication information includes a BI, and the RAPID information includes a RAPID.

[0175] Optionally, when the RAR message is a message of a two-step random access process:

[0176] like Fig.15As shown, if the target MAC sub-PDU is a MAC sub-PDU of the first type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of second indication information, 1 bit of first indication information, 2 bits of reserved field, and 4 bits of backoff indication information;

[0177] or

[0178] If the target MAC sub-PDU is a MAC sub-PDU of the second type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of second indication information, 1 bit of first indication information, and 6 bits of reserved field;

[0179] or

[0180] like Fig.17 As shown, if the target MAC sub-PDU is a MAC sub-PDU of the fourth type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of second indication information, 1 bit of first indication information, 2 bits of third indication information, and 4 bits of reserved field, and the third indication information is used to indicate the number of MAC sub-PDUs concatenated with the target MAC sub-PDU;

[0181] or

[0182] like Fig.14 As shown, if the target MAC sub-PDU is a fifth type of MAC sub-PDU, the MAC subheader of the target MAC sub-PDU includes: 1 bit of second indication information, 1 bit of reserved field, and 6 bits of RAPID information.

[0183] Among them, Fig.14 , Fig.15 and Fig.17 As shown, the second indication information includes a T1 field, the first indication information includes a T2 field, the third indication information includes an S field, the reserved field is an R field, the backoff indication information includes a BI, and the RAPID information includes a RAPID.

[0184] Optionally, the reserved field includes 1 bit of fourth indication information;

[0185] The fourth indication information is used to indicate at least one of the following:

[0186] Whether the terminal uses the same uplink beam to repeatedly transmit the message Msg3;

[0187] The format of the MAC RAR unit or FallbackRAR unit in the target MAC sub-PDU.

[0188] The fourth indication information may be a reserved field that is newly added due to the reduction of the indication field information used to indicate the MAC subPDU type. In the case where the RAR message is a message of a four-step random access process, such as Fig.10 , Fig.11 , Fig.12 As shown, the fourth indication information may be the second bit (bold R field) in the MAC subheader in the MAC sub-PDU. In the case where the RAR message is a message of a two-step random access process, such as Fig.14 As shown, the fourth indication information may be the second bit (bold R field) in the MAC subheader in the MAC sub-PDU; or Fig.15 As shown, the fourth indication information may be the third bit (bold R field) in the MAC subheader in the MAC sub-PDU; or Fig.16 As shown, the fourth indication information may be the 4th bit (bold R field) in the MAC subheader in the MAC sub-PDU.

[0189] In one implementation, for a subheader including the field T / R / RAPID, when RAPID corresponds to a preamble of a Rel-18 Msg3 repetition in a separate random access occasion (Rach occasion, RO), the fourth indication information may be used to instruct the UE to perform repeated transmission of Msg3 using different uplink beams. For example, Fig.13 As shown, Fig.11 The newly added reserved field R (bold R field) can be used as the B field. When B is the first preset value (for example, 1), it indicates that the UE uses different uplink beams for repeated transmission in Msg3; when B is the second preset value (for example, 0), it indicates that the UE uses the same uplink beam for repeated transmission in Msg3.

[0190] In this implementation, the fourth indication information is used to indicate whether the terminal uses the same uplink beam to repeatedly transmit and send the message Msg3. In this way, since the indication domain information used to indicate the MAC subPDU type is reduced, the newly added reserved field can be used to indicate whether the terminal uses the same uplink beam to repeatedly transmit and send the message Msg3, which can improve the success rate of RACH.

[0191] In this implementation, when the RAR message is a message of a four-step random access process, the fourth indication information is used to indicate the format of the MAC RAR unit in the target MAC sub-PDU. In this way, since the indication domain information used to indicate the MAC subPDU type is reduced, the newly added reserved field can be used to indicate the format of the MAC RAR unit in the target MAC sub-PDU, thereby avoiding the MAC RAR unit from carrying unnecessary information, thereby reducing the size of the Msg2 message and reducing the signaling overhead.

[0192] In this implementation, when the RAR message is a message of a two-step random access process, the fourth indication information is used to indicate the format of the FallbackRAR unit in the target MAC sub-PDU. In this way, since the indication domain information used to indicate the MAC subPDU type is reduced, the newly added reserved field can be used to indicate the format of the FallbackRAR unit in the target MAC sub-PDU, thereby avoiding the FallbackRAR unit from carrying unnecessary information, thereby reducing the size of the MsgB message and reducing signaling overhead.

[0193] Optionally, the fourth indication information indicates a format of a MAC RAR unit or a FallbackRAR unit in the target MAC sub-PDU, including at least one of the following:

[0194] The fourth indication information indicates whether the MAC RAR unit carries a temporary cell radio network temporary identifier C-RNTI;

[0195] The fourth indication information indicates whether the MAC RAR unit carries an uplink UL authorization;

[0196] The fourth indication information indicates whether the FallbackRAR unit carries a temporary C-RNTI;

[0197] The fourth indication information indicates whether the FallbackRAR unit carries UL authorization.

[0198] In this implementation, the fourth indication information is used to indicate whether the MAC RAR unit carries the temporary cell RNTI. Therefore, when it is not necessary to carry the temporary cell RNTI, the network side device can instruct the MAC RAR unit not to carry the temporary cell RNTI through the fourth indication information, thereby avoiding the MAC RAR unit from carrying unnecessary information, thereby reducing the size of the Msg2 message and reducing signaling overhead.

[0199] In this implementation, the fourth indication information is used to indicate whether the MAC RAR unit carries UL authorization. Therefore, when it is not necessary to carry UL authorization, the network side device can instruct the MAC RAR unit not to carry UL authorization through the fourth indication information, thereby avoiding the MAC RAR unit from carrying unnecessary information, thereby reducing the size of the Msg2 message and reducing signaling overhead.

[0200] In this implementation, the fourth indication information is used to indicate whether the FallbackRAR unit carries a temporary C-RNTI, so that when there is no need to carry the temporary cell RNTI, the network side device can instruct the FallbackRAR unit not to carry the temporary cell RNTI through the fourth indication information, thereby avoiding the FallbackRAR unit from carrying unnecessary information, thereby reducing the size of the MsgB message and reducing signaling overhead.

[0201] In this implementation, the fourth indication information is used to indicate whether the FallbackRAR unit carries UL authorization. Therefore, when it is not necessary to carry UL authorization, the network side device can instruct the FallbackRAR unit not to carry UL authorization through the fourth indication information, thereby avoiding the FallbackRAR unit from carrying unnecessary information, thereby reducing the size of the MsgB message and reducing signaling overhead.

[0202] Optionally, the method further comprises:

[0203] The terminal determines a MAC sub-PDU corresponding to the terminal based on the type of the target MAC sub-PDU.

[0204] In this implementation, the terminal determines the MAC sub-PDU corresponding to the terminal based on the type of the target MAC sub-PDU. In this way, the terminal can parse the content of the target MAC sub-PDU by determining the type of the target MAC sub-PDU, and then determine whether the target MAC sub-PDU is the MAC sub-PDU corresponding to the terminal.

[0205] Optionally, the terminal determines, based on the type of the target MAC sub-PDU, a MAC sub-PDU corresponding to the terminal, including:

[0206] In a case where the RAR message is a message of a four-step random access process, if the target MAC sub-PDU is a MAC sub-PDU of the third type, the terminal determines whether the target MAC sub-PDU is a MAC sub-PDU corresponding to the terminal based on the RAPID information in the target MAC sub-PDU;

[0207] or

[0208] In the case where the RAR message is a message of a two-step random access process, if the target MAC sub-PDU is a fifth type of MAC sub-PDU, the terminal determines whether the target MAC sub-PDU is a MAC sub-PDU corresponding to the terminal based on the RAPID information in the target MAC sub-PDU.

[0209] Among them, RAPID can indicate the index of the Preamble received by the network side device. The terminal parses RAPID. If the index of the Preamble indicated by RAPID is the index of the Preamble sent by the terminal to the network side device, the MAC sub-PDU to which the RAPID belongs is the MAC sub-PDU corresponding to the terminal, and the terminal can obtain the response information of the network side device to the random access request of the terminal from the corresponding MAC sub-PDU.

[0210] It should be noted that the RAR message sent by the network side device may include the response information of the network side device to the random access request of multiple terminals. The terminal determines the type of each MAC sub-PDU (subPDU) by parsing the MAC subheader of each MAC sub-PDU of the RAR message, and then obtains the response information of the network side device to the random access request of the terminal from the corresponding MAC sub-PDU. Different types of MAC sub-PDUs have different lengths. The terminal can determine the length of the MAC sub-PDU according to the type of the MAC sub-PDU, so that when the currently parsed MAC sub-PDU is not the MAC sub-PDU corresponding to the terminal, the terminal can determine the starting position of the next MAC sub-PDU according to the length of the MAC sub-PDU determined by the type of the current MAC sub-PDU, and parse the next MAC sub-PDU until the corresponding MAC sub-PDU is found to obtain the response information of the network side device to the random access request of the terminal; or the RAR message ends, and it is determined that the current RAR message does not contain the response information to itself. At this time, the MAC sub-PDU corresponding to the terminal is not included in all MAC sub-PDUs.

[0211] In this implementation, the terminal determines the type of MAC sub-PDU in the RAR message, and obtains RAPID information in the RAR message based on the determined type of MAC sub-PDU, so that the terminal can obtain the MAC sub-PDU required by itself based on the RAPID information.

[0212] See also Fig.19 , Fig.19 is a flow chart of an information determination method provided in an embodiment of the present application, such as Fig.19 As shown, the information determination method includes the following steps:

[0213] Step 201: A network-side device sends a RAR message to a terminal, where the RAR message includes at least one MAC sub-PDU, and a target MAC sub-PDU in the at least one MAC sub-PDU includes target indication information;

[0214] Among them, at least one item of the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU and the target indication information is used to indicate the type of the target MAC sub-PDU.

[0215] Optionally, when the RAR message is a message of a four-step random access process, the target indication information includes first indication information; wherein,

[0216] In a case where the first indication information is a first preset value, the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU is used to indicate that the target MAC sub-PDU is a first type of MAC sub-PDU or a second type of MAC sub-PDU, the first type of MAC sub-PDU includes backoff indication information, and the second type of MAC sub-PDU includes Padding;

[0217] or

[0218] In a case where the first indication information is a second preset value, the target MAC sub-PDU is a third type of MAC sub-PDU, and the third type of MAC sub-PDU includes RAPID information.

[0219] Optionally, in the case where the RAR message is a message of a two-step random access process, the target indication information includes first indication information or second indication information, and at least one of the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU, the first indication information, and the second indication information is used to indicate the type of the target MAC sub-PDU; wherein,

[0220] In the case where the second indication information is a third preset value, if the first indication information is a first preset value, the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU is used to indicate that the target MAC sub-PDU is a first type of MAC sub-PDU or a second type of MAC sub-PDU, the first type of MAC sub-PDU includes backoff indication information, and the second type of MAC sub-PDU includes Padding;

[0221] or

[0222] In the case where the second indication information is the third preset value, if the first indication information is the second preset value, the target MAC sub-PDU is a fourth type of MAC sub-PDU, and the fourth type of MAC sub-PDU is a Success Random Access Response SuccessRAR MAC sub-PDU;

[0223] or

[0224] When the second indication information is the fourth preset value, the target MAC sub-PDU is a fifth type of MAC sub-PDU, and the fifth type of MAC sub-PDU is a fallback random access response FallbackRAR MAC sub-PDU.

[0225] Optionally, in a case where the target MAC sub-PDU is the first MAC sub-PDU in the at least one MAC sub-PDU, the target MAC sub-PDU is a MAC sub-PDU of the first type;

[0226] or

[0227] In a case where the target MAC sub-PDU is not the first MAC sub-PDU in the at least one MAC sub-PDU, the target MAC sub-PDU is the second type of MAC sub-PDU.

[0228] Optionally, the first indication information is 1-bit indication information.

[0229] Optionally, when the RAR message is a message of a four-step random access process:

[0230] If the target MAC sub-PDU is a MAC sub-PDU of the first type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of the first indication information, 3 bits of reserved field, and 4 bits of backoff indication information;

[0231] or

[0232] If the target MAC sub-PDU is a MAC sub-PDU of the second type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of the first indication information, and a 7-bit reserved field;

[0233] or

[0234] If the target MAC sub-PDU is a MAC sub-PDU of the third type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of the first indication information, 1 bit of the reserved field, and 6 bits of RAPID information.

[0235] Optionally, when the RAR message is a message of a two-step random access process:

[0236] If the target MAC sub-PDU is a MAC sub-PDU of the first type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of second indication information, 1 bit of first indication information, 2 bits of reserved field, and 4 bits of backoff indication information;

[0237] or

[0238] If the target MAC sub-PDU is a MAC sub-PDU of the second type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of second indication information, 1 bit of first indication information, and 6 bits of reserved field;

[0239] or

[0240] If the target MAC sub-PDU is a MAC sub-PDU of the fourth type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of second indication information, 1 bit of first indication information, 2 bits of third indication information, and a 4-bit reserved field, wherein the third indication information is used to indicate the number of MAC sub-PDUs concatenated with the target MAC sub-PDU;

[0241] or

[0242] If the target MAC sub-PDU is a MAC sub-PDU of the fifth type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of second indication information, 1 bit of reserved field, and 6 bits of RAPID information.

[0243] Optionally, the reserved field includes 1 bit of fourth indication information;

[0244] The fourth indication information is used to indicate at least one of the following:

[0245] Whether the terminal uses the same uplink beam to repeatedly transmit the message Msg3;

[0246] The format of the MAC RAR unit or FallbackRAR unit in the target MAC sub-PDU.

[0247] Optionally, the fourth indication information indicates a format of a MAC RAR unit or a FallbackRAR unit in the target MAC sub-PDU, including at least one of the following:

[0248] The fourth indication information indicates whether the MAC RAR unit carries a temporary cell radio network temporary identifier C-RNTI;

[0249] The fourth indication information indicates whether the MAC RAR unit carries an uplink UL authorization;

[0250] The fourth indication information indicates whether the FallbackRAR unit carries a temporary C-RNTI;

[0251] The fourth indication information indicates whether the FallbackRAR unit carries UL authorization.

[0252] It should be noted that this embodiment is Fig. 9 The implementation of the corresponding network side device in the embodiment shown in the figure can be found in the specific implementation of Fig. 9 To avoid repeated description of the embodiment shown, the present embodiment will not be described in detail.

[0253] The information determination method provided by the embodiments of the present application is described below through several specific embodiments:

[0254] Embodiment 1:

[0255] In this embodiment, the RAR message is used for four-step random access, and the RAR message includes BI, padding, and RAPID.

[0256] Relative to Figure 2 The format of the RAR message in the related art is as follows Fig. 20 As shown in Table 2, the RAR message of the embodiment of the present application indicates the type of subPDU through the sorting information and T field information of the MAC subPDU.

[0257] Table 2

[0258] MAC subPDU number T field value 1 0 2 1 3 1 4 1 n 1 n+1 0

[0259] Among them, for the first MAC subPDU, the T field value is 0, and the subPDU includes BI. For the second MACsubPDU, the T field value is 1, and the subPDU includes RAPID. The third MAC subPDU to the nth MAC subPDU are similar and all include RAPID. For the n+1th MAC subPDU, the T field value is 0, and the subPDU includes Padding. Different from the related art, in this embodiment, padding is MAC subPDU.

[0260] Embodiment 2:

[0261] In this embodiment, the RAR message is used for four-step random access, and the RAR message includes BI and padding.

[0262] like Fig.21As shown in Table 3, the RAR message of the embodiment of the present application indicates the type of subPDU through the sorting information and T field information of the MAC subPDU.

[0263] Table 3

[0264] MAC subPDU number T field value 1 0 2 0

[0265] For the first MAC subPDU, the T field has a value of 0, and the subPDU includes a BI. For the second MAC subPDU, the T field has a value of 0, and the subPDU includes a Padding.

[0266] Embodiment 3:

[0267] In this embodiment, the RAR message is used for four-step random access, and the RAR message includes RAPID and padding.

[0268] like Fig. 22 As shown in Table 4, the RAR message of the embodiment of the present application indicates the type of subPDU through the sorting information and T field information of the MAC subPDU.

[0269] Table 4

[0270] MAC subPDU number T field value 1 1 2 1 3 1 n 1 n+1 0

[0271] For the first MAC subPDU, the T field value is 1, and the subPDU includes RAPID. For the second MAC subPDU, the T field value is 1, and the subPDU includes RAPID. The third MAC subPDU to the nth MAC subPDU are similar and all include RAPID. For the n+1th MAC subPDU, the T field value is 0, and the subPDU includes Padding.

[0272] Embodiment 4:

[0273] In this embodiment, the RAR message is used for four-step random access, and the RAR message includes BI.

[0274] like Fig.23 As shown in Table 5, the RAR message of the embodiment of the present application indicates the type of subPDU through the sorting information and T field information of the MAC subPDU.

[0275] Table 5

[0276] MAC subPDU number T field value 1 0

[0277] For the first MAC subPDU, the value of the T field is 0, and the subPDU includes a BI.

[0278] Embodiment 5:

[0279] This embodiment describes the behavior of the UE.

[0280] UE sends Preamble in the selected RO;

[0281] The UE monitors and receives RAR messages in the RAR window;

[0282] For the received RAR message, the UE decodes the subPDUs in sequence. The UE decoding of the subPDUs includes at least one of the following:

[0283] For the first subPDU in the RAR message, if the T field takes the first value, it is determined that the subPDU contains the BI field;

[0284] For any subPDU in the RAR message, if the value of the T field is the second value, it is determined that the subPDU contains the RAPID field;

[0285] For a non-first subPDU in the RAR message, if the value of the T field is the first value, it is determined that the subPDU contains padding.

[0286] Embodiment 6:

[0287] This embodiment illustrates the use of the newly added reserved field R due to the reduction of the indication field used to indicate the subPDU type.

[0288] like Fig.11 As shown, the value of the R field is:

[0289] Value 0: indicates that the MAC RAR unit format is the existing MAC RAR unit format (such as Figure 5 shown);

[0290] Value 1: Indicates that the MAC RAR unit format is one of the following MAC RAR unit formats:

[0291] Format 1: Fig.24 As shown, the temporary cell RNTI (TC-RNTI) is not carried and is used for non-contention random access (CFRA).

[0292] Format 2: Fig.25 As shown, it does not carry UL_grant and TC-RNTI, and is used for CFRA triggered by the arrival of downlink data.

[0293] Embodiment 7:

[0294] This embodiment is a further optimization based on Embodiment 6.

[0295] It should be noted that there are two types of RACH: CFRA: contention-free RACH; CBRA: contention-based RACH. RAPID is a 6-bit ID. The UE listening to Msg2 knows which indexes correspond to the preambles used for CFRA, that is, the RAPIDs that are not configured by the broadcast message to be used for contention random access (CBRA).

[0296] like Fig.26 As shown, the UE determines whether it is CFRA or whether it carries TC-RNTI according to the RAPID in the subPDU subheader, and determines whether UL grant is scheduled according to the R field.

[0297] When the R value in the subPDU subheader is the first value:

[0298] If the RAPID in the subheader of the subPDU is the RAPID corresponding to CFRA (i.e., the RAPID that is not configured by the broadcast message as available for contention random access (CBRA)), the UE determines that the format of the MAC RAR unit is: Format 1 in Example 6, used for CFRA, when the network side schedules UL grant.

[0299] If the RAPID in the subheader of the subPDU is the RAPID corresponding to the CBRA (i.e., the RAPID configured by the broadcast message as being available for contention random access (CBRA)), the UE determines that the format of the MAC RAR unit is: the existing MAC RAR unit format (such as Figure 5 shown) for CBRA.

[0300] When R in the subPDU subheader takes the second value:

[0301] The UE determines that the format of the MAC RAR unit is: Format 2 in Example 6, which is used for CFRA and the network side does not schedule UL grant.

[0302] In an embodiment of the present application, the terminal can determine the type of subPDU in combination with the order and indication field of the subPDU in RACH Msg2; and, since the indication field used to indicate the MAC subPDU type is reduced, the newly added reserved field R can be used to indicate other information, for example, to indicate the format of the MAC RAR unit.

[0303] Through the embodiments of the present application, the redundant indication bits in the subheader of RACH Msg2 can be reduced, and the redundant indication bits can be used to indicate other information, such as the format of the MAC RAR unit, thereby reducing the size of the Msg2 message and reducing the signaling overhead.

[0304] The information determination method provided in the embodiment of the present application can be executed by an information determination device. In the embodiment of the present application, an information determination device executing the information determination method is taken as an example to illustrate the information determination device provided in the embodiment of the present application.

[0305] See also Fig. 27 , Fig. 27 is a structural diagram of an information determination device provided in an embodiment of the present application, wherein the terminal includes the information determination device, such as Fig. 27 As shown, the information determination device 300 includes:

[0306] The receiving module 301 is configured to receive a random access response RAR message sent by a network side device, wherein the RAR message includes at least one MAC sub-protocol data unit PDU, and a target MAC sub-PDU in the at least one MAC sub-PDU includes target indication information;

[0307] The first determination module 302 is used to determine the type of the target MAC sub-PDU based on the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU and at least one item of the target indication information.

[0308] Optionally, when the RAR message is a message of a four-step random access process, the target indication information includes first indication information, and the first determining module 302 is specifically used for at least one of the following:

[0309] In a case where the first indication information is a first preset value, determining that the target MAC sub-PDU is a first type of MAC sub-PDU or a second type of MAC sub-PDU based on the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU, the first type of MAC sub-PDU includes backoff indication information, and the second type of MAC sub-PDU includes padding;

[0310] In a case where the first indication information is a second preset value, it is determined that the target MAC sub-PDU is a third type of MAC sub-PDU, and the third type of MAC sub-PDU includes random access preamble identifier RAPID information.

[0311] Optionally, when the RAR message is a message of a two-step random access process, the target indication information includes first indication information or second indication information, and the first determining module 302 is specifically used for at least one of the following:

[0312] In the case where the second indication information is the third preset value, if the first indication information is the first preset value, determining that the target MAC sub-PDU is a first type of MAC sub-PDU or a second type of MAC sub-PDU based on the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU, the first type of MAC sub-PDU includes backoff indication information, and the second type of MAC sub-PDU includes Padding;

[0313] In the case where the second indication information is the third preset value, if the first indication information is the second preset value, determining that the target MAC sub-PDU is a fourth type of MAC sub-PDU, and the fourth type of MAC sub-PDU is a Success Random Access Response SuccessRAR MAC sub-PDU;

[0314] When the second indication information is the fourth preset value, it is determined that the target MAC sub-PDU is a fifth type of MAC sub-PDU, and the fifth type of MAC sub-PDU is a fallback random access response FallbackRAR MAC sub-PDU.

[0315] Optionally, the first determining module is specifically configured to:

[0316] In a case where the target MAC sub-PDU is the first MAC sub-PDU in the at least one MAC sub-PDU, determining that the target MAC sub-PDU is a MAC sub-PDU of the first type;

[0317] or

[0318] In a case where the target MAC sub-PDU is not the first MAC sub-PDU among the at least one MAC sub-PDU, it is determined that the target MAC sub-PDU is the second type of MAC sub-PDU.

[0319] Optionally, the first indication information is 1-bit indication information.

[0320] Optionally, when the RAR message is a message of a four-step random access process:

[0321] If the target MAC sub-PDU is a MAC sub-PDU of the first type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of the first indication information, 3 bits of reserved field, and 4 bits of backoff indication information;

[0322] or

[0323] If the target MAC sub-PDU is a MAC sub-PDU of the second type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of the first indication information, and a 7-bit reserved field;

[0324] or

[0325] If the target MAC sub-PDU is a MAC sub-PDU of the third type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of the first indication information, 1 bit of the reserved field, and 6 bits of RAPID information.

[0326] Optionally, when the RAR message is a message of a two-step random access process:

[0327] If the target MAC sub-PDU is a MAC sub-PDU of the first type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of second indication information, 1 bit of first indication information, 2 bits of reserved field, and 4 bits of backoff indication information;

[0328] or

[0329] If the target MAC sub-PDU is a MAC sub-PDU of the second type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of second indication information, 1 bit of first indication information, and 6 bits of reserved field;

[0330] or

[0331] If the target MAC sub-PDU is a MAC sub-PDU of the fourth type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of second indication information, 1 bit of first indication information, 2 bits of third indication information, and a 4-bit reserved field, wherein the third indication information is used to indicate the number of MAC sub-PDUs concatenated with the target MAC sub-PDU;

[0332] or

[0333] If the target MAC sub-PDU is a MAC sub-PDU of the fifth type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of second indication information, 1 bit of reserved field, and 6 bits of RAPID information.

[0334] Optionally, the reserved field includes 1 bit of fourth indication information;

[0335] The fourth indication information is used to indicate at least one of the following:

[0336] Whether the terminal uses the same uplink beam to repeatedly transmit the message Msg3;

[0337] The format of the MAC RAR unit or FallbackRAR unit in the target MAC sub-PDU.

[0338] Optionally, the fourth indication information indicates a format of a MAC RAR unit or a FallbackRAR unit in the target MAC sub-PDU, including at least one of the following:

[0339] The fourth indication information indicates whether the MAC RAR unit carries a temporary cell radio network temporary identifier C-RNTI;

[0340] The fourth indication information indicates whether the MAC RAR unit carries an uplink UL authorization;

[0341] The fourth indication information indicates whether the FallbackRAR unit carries a temporary C-RNTI;

[0342] The fourth indication information indicates whether the FallbackRAR unit carries UL authorization.

[0343] Optionally, the device further comprises:

[0344] The second determination module is used to determine the MAC sub-PDU corresponding to the terminal based on the type of the target MAC sub-PDU.

[0345] Optionally, the second determining module is specifically configured to:

[0346] In a case where the RAR message is a message of a four-step random access process, if the target MAC sub-PDU is a MAC sub-PDU of the third type, determining whether the target MAC sub-PDU is a MAC sub-PDU corresponding to the terminal based on the RAPID information in the target MAC sub-PDU;

[0347] or

[0348] In the case where the RAR message is a message of a two-step random access process, if the target MAC sub-PDU is a fifth type of MAC sub-PDU, it is determined whether the target MAC sub-PDU is a MAC sub-PDU corresponding to the terminal based on the RAPID information in the target MAC sub-PDU.

[0349] The information determination device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices other than a terminal. Exemplarily, the terminal may include but is not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

[0350] The information determination device provided in the embodiment of the present application can achieve Fig. 9 The various processes implemented by the method embodiment and achieving the same technical effect are not described here to avoid repetition.

[0351] See also Fig.28 , Fig.28 is a structural diagram of an information determination device provided in an embodiment of the present application, and a network side device includes the information determination device, such as Fig.28 As shown, the information determination device 400 includes:

[0352] A sending module 401 is configured to send a RAR message to a terminal, wherein the RAR message includes at least one MAC sub-PDU, and a target MAC sub-PDU in the at least one MAC sub-PDU includes target indication information;

[0353] Among them, at least one item of the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU and the target indication information is used to indicate the type of the target MAC sub-PDU.

[0354] Optionally, when the RAR message is a message of a four-step random access process, the target indication information includes first indication information; wherein,

[0355] In a case where the first indication information is a first preset value, the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU is used to indicate that the target MAC sub-PDU is a first type of MAC sub-PDU or a second type of MAC sub-PDU, the first type of MAC sub-PDU includes backoff indication information, and the second type of MAC sub-PDU includes Padding;

[0356] or

[0357] In a case where the first indication information is a second preset value, the target MAC sub-PDU is a third type of MAC sub-PDU, and the third type of MAC sub-PDU includes RAPID information.

[0358] Optionally, in the case where the RAR message is a message of a two-step random access process, the target indication information includes first indication information or second indication information, and at least one of the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU, the first indication information, and the second indication information is used to indicate the type of the target MAC sub-PDU; wherein,

[0359] In the case where the second indication information is a third preset value, if the first indication information is a first preset value, the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU is used to indicate that the target MAC sub-PDU is a first type of MAC sub-PDU or a second type of MAC sub-PDU, the first type of MAC sub-PDU includes backoff indication information, and the second type of MAC sub-PDU includes Padding;

[0360] or

[0361] In the case where the second indication information is the third preset value, if the first indication information is the second preset value, the target MAC sub-PDU is a fourth type of MAC sub-PDU, and the fourth type of MAC sub-PDU is a Success Random Access Response SuccessRAR MAC sub-PDU;

[0362] or

[0363] When the second indication information is the fourth preset value, the target MAC sub-PDU is a fifth type of MAC sub-PDU, and the fifth type of MAC sub-PDU is a fallback random access response FallbackRAR MAC sub-PDU.

[0364] Optionally, in a case where the target MAC sub-PDU is the first MAC sub-PDU in the at least one MAC sub-PDU, the target MAC sub-PDU is a MAC sub-PDU of the first type;

[0365] or

[0366] In a case where the target MAC sub-PDU is not the first MAC sub-PDU in the at least one MAC sub-PDU, the target MAC sub-PDU is the second type of MAC sub-PDU.

[0367] Optionally, the first indication information is 1-bit indication information.

[0368] Optionally, when the RAR message is a message of a four-step random access process:

[0369] If the target MAC sub-PDU is a MAC sub-PDU of the first type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of the first indication information, 3 bits of reserved field, and 4 bits of backoff indication information;

[0370] or

[0371] If the target MAC sub-PDU is a MAC sub-PDU of the second type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of the first indication information, and a 7-bit reserved field;

[0372] or

[0373] If the target MAC sub-PDU is a MAC sub-PDU of the third type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of the first indication information, 1 bit of the reserved field, and 6 bits of RAPID information.

[0374] Optionally, when the RAR message is a message of a two-step random access process:

[0375] If the target MAC sub-PDU is a MAC sub-PDU of the first type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of second indication information, 1 bit of first indication information, 2 bits of reserved field, and 4 bits of backoff indication information;

[0376] or

[0377] If the target MAC sub-PDU is a MAC sub-PDU of the second type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of second indication information, 1 bit of first indication information, and 6 bits of reserved field;

[0378] or

[0379] If the target MAC sub-PDU is a MAC sub-PDU of the fourth type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of second indication information, 1 bit of first indication information, 2 bits of third indication information, and a 4-bit reserved field, wherein the third indication information is used to indicate the number of MAC sub-PDUs concatenated with the target MAC sub-PDU;

[0380] or

[0381] If the target MAC sub-PDU is a MAC sub-PDU of the fifth type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of second indication information, 1 bit of reserved field, and 6 bits of RAPID information.

[0382] Optionally, the reserved field includes 1 bit of fourth indication information;

[0383] The fourth indication information is used to indicate at least one of the following:

[0384] Whether the terminal uses the same uplink beam to repeatedly transmit the message Msg3;

[0385] The format of the MAC RAR unit or FallbackRAR unit in the target MAC sub-PDU.

[0386] Optionally, the fourth indication information indicates a format of a MAC RAR unit or a FallbackRAR unit in the target MAC sub-PDU, including at least one of the following:

[0387] The fourth indication information indicates whether the MAC RAR unit carries a temporary cell radio network temporary identifier C-RNTI;

[0388] The fourth indication information indicates whether the MAC RAR unit carries an uplink UL authorization;

[0389] The fourth indication information indicates whether the FallbackRAR unit carries a temporary C-RNTI;

[0390] The fourth indication information indicates whether the FallbackRAR unit carries UL authorization.

[0391] The information determination device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices other than a terminal. Exemplarily, the terminal may include but is not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

[0392] The information determination device provided in the embodiment of the present application can achieve Fig.19 The various processes implemented by the method embodiment and achieving the same technical effect are not described here to avoid repetition.

[0393] Alternatively, if Fig.29As shown, the embodiment of the present application also provides a communication device 500, including a processor 501 and a memory 502, and the memory 502 stores a program or instruction that can be run on the processor 501. For example, when the communication device 500 is a terminal, the program or instruction is executed by the processor 501 to implement the various steps of the above-mentioned information determination method embodiment applied to the terminal, and can achieve the same technical effect. To avoid repetition, it is not repeated here. When the communication device 500 is a network side device, the program or instruction is executed by the processor 501 to implement the various steps of the above-mentioned information determination method embodiment applied to the network side device, and can achieve the same technical effect. To avoid repetition, it is not repeated here.

[0394] The embodiment of the present application also provides a terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the following Fig. 9 The steps in the method embodiment shown. This terminal embodiment corresponds to the above-mentioned terminal side method embodiment, and each implementation process and implementation mode of the above-mentioned method embodiment can be applied to this terminal embodiment and can achieve the same technical effect.

[0395] Specifically, Fig.30 A schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[0396] The terminal 600 includes but is not limited to: a radio frequency unit 601, a network module 602, an audio output unit 603, an input unit 604, a sensor 605, a display unit 606, a user input unit 607, an interface unit 608, a memory 609 and at least some of the components of a processor 610.

[0397] Those skilled in the art will appreciate that the terminal 600 may also include a power source (such as a battery) for supplying power to various components, and the power source may be logically connected to the processor 610 through a power management system, thereby implementing functions such as managing charging, discharging, and power consumption management through the power management system. Fig.30 The terminal structure shown in the figure does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be described in detail here.

[0398] It should be understood that in the embodiment of the present application, the input unit 604 may include a graphics processing unit (GPU) 6041 and a microphone 6042, and the GPU 6041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 606 may include a display panel 6061, and the display panel 6061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 607 includes a touch panel 6071 and at least one of other input devices 6072. The touch panel 6071 is also called a touch screen. The touch panel 6071 may include two parts: a touch detection device and a touch controller. Other input devices 6072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0399] In the embodiment of the present application, after receiving downlink data from the network side device, the RF unit 601 can transmit the data to the processor 610 for processing; in addition, the RF unit 601 can send uplink data to the network side device. Generally, the RF unit 601 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0400] The memory 609 can be used to store software programs or instructions and various data. The memory 609 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 609 may include a volatile memory or a non-volatile memory, or the memory 609 may include both volatile and non-volatile memories. Among them, the non-volatile 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. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM). The memory 609 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0401] The processor 610 may include one or more processing units; optionally, the processor 610 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 610.

[0402] The processor 610 is used for:

[0403] Receiving a random access response RAR message sent by a network side device, the RAR message includes at least one MAC sub-protocol data unit PDU, and a target MAC sub-PDU in the at least one MAC sub-PDU includes target indication information;

[0404] The type of the target MAC sub-PDU is determined based on the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU and at least one item of the target indication information.

[0405] Optionally, when the RAR message is a message of a four-step random access process, the target indication information includes first indication information, and the processor 610 is specifically configured to do at least one of the following:

[0406] In a case where the first indication information is a first preset value, determining that the target MAC sub-PDU is a first type of MAC sub-PDU or a second type of MAC sub-PDU based on the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU, the first type of MAC sub-PDU includes backoff indication information, and the second type of MAC sub-PDU includes padding;

[0407] In a case where the first indication information is a second preset value, it is determined that the target MAC sub-PDU is a third type of MAC sub-PDU, and the third type of MAC sub-PDU includes random access preamble identifier RAPID information.

[0408] Optionally, when the RAR message is a message of a two-step random access process, the target indication information includes first indication information or second indication information, and the processor 610 is specifically configured to perform at least one of the following:

[0409] In the case where the second indication information is the third preset value, if the first indication information is the first preset value, determining that the target MAC sub-PDU is a first type of MAC sub-PDU or a second type of MAC sub-PDU based on the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU, the first type of MAC sub-PDU includes backoff indication information, and the second type of MAC sub-PDU includes Padding;

[0410] In the case where the second indication information is the third preset value, if the first indication information is the second preset value, determining that the target MAC sub-PDU is a fourth type of MAC sub-PDU, and the fourth type of MAC sub-PDU is a Success Random Access Response SuccessRAR MAC sub-PDU;

[0411] When the second indication information is the fourth preset value, it is determined that the target MAC sub-PDU is a fifth type of MAC sub-PDU, and the fifth type of MAC sub-PDU is a fallback random access response FallbackRAR MAC sub-PDU.

[0412] Optionally, the processor 610 is specifically configured to:

[0413] In a case where the target MAC sub-PDU is the first MAC sub-PDU in the at least one MAC sub-PDU, determining that the target MAC sub-PDU is a MAC sub-PDU of the first type;

[0414] or

[0415] In a case where the target MAC sub-PDU is not the first MAC sub-PDU among the at least one MAC sub-PDU, it is determined that the target MAC sub-PDU is the second type of MAC sub-PDU.

[0416] Optionally, the first indication information is 1-bit indication information.

[0417] Optionally, when the RAR message is a message of a four-step random access process:

[0418] If the target MAC sub-PDU is a MAC sub-PDU of the first type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of the first indication information, 3 bits of reserved field, and 4 bits of backoff indication information;

[0419] or

[0420] If the target MAC sub-PDU is a MAC sub-PDU of the second type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of the first indication information, and a 7-bit reserved field;

[0421] or

[0422] If the target MAC sub-PDU is a MAC sub-PDU of the third type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of the first indication information, 1 bit of the reserved field, and 6 bits of RAPID information.

[0423] Optionally, when the RAR message is a message of a two-step random access process:

[0424] If the target MAC sub-PDU is a MAC sub-PDU of the first type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of second indication information, 1 bit of first indication information, 2 bits of reserved field, and 4 bits of backoff indication information;

[0425] or

[0426] If the target MAC sub-PDU is a MAC sub-PDU of the second type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of second indication information, 1 bit of first indication information, and 6 bits of reserved field;

[0427] or

[0428] If the target MAC sub-PDU is a MAC sub-PDU of the fourth type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of second indication information, 1 bit of first indication information, 2 bits of third indication information, and a 4-bit reserved field, wherein the third indication information is used to indicate the number of MAC sub-PDUs concatenated with the target MAC sub-PDU;

[0429] or

[0430] If the target MAC sub-PDU is a MAC sub-PDU of the fifth type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of second indication information, 1 bit of reserved field, and 6 bits of RAPID information.

[0431] Optionally, the reserved field includes 1 bit of fourth indication information;

[0432] The fourth indication information is used to indicate at least one of the following:

[0433] Whether the terminal uses the same uplink beam to repeatedly transmit the message Msg3;

[0434] The format of the MAC RAR unit or FallbackRAR unit in the target MAC sub-PDU.

[0435] Optionally, the fourth indication information indicates a format of a MAC RAR unit or a FallbackRAR unit in the target MAC sub-PDU, including at least one of the following:

[0436] The fourth indication information indicates whether the MAC RAR unit carries a temporary cell radio network temporary identifier C-RNTI;

[0437] The fourth indication information indicates whether the MAC RAR unit carries an uplink UL authorization;

[0438] The fourth indication information indicates whether the FallbackRAR unit carries a temporary C-RNTI;

[0439] The fourth indication information indicates whether the FallbackRAR unit carries UL authorization.

[0440] Optionally, the processor 610 is further configured to:

[0441] A MAC sub-PDU corresponding to the terminal is determined based on the type of the target MAC sub-PDU.

[0442] Optionally, the processor 610 is specifically configured to:

[0443] In a case where the RAR message is a message of a four-step random access process, if the target MAC sub-PDU is a MAC sub-PDU of the third type, the terminal determines whether the target MAC sub-PDU is a MAC sub-PDU corresponding to the terminal based on the RAPID information in the target MAC sub-PDU;

[0444] or

[0445] In the case where the RAR message is a message of a two-step random access process, if the target MAC sub-PDU is a fifth type of MAC sub-PDU, the terminal determines whether the target MAC sub-PDU is a MAC sub-PDU corresponding to the terminal based on the RAPID information in the target MAC sub-PDU.

[0446] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the method embodiment Figure 6 The related descriptions are the same or corresponding technical effects, and to avoid repetition, they will not be repeated here.

[0447] Specifically, the terminal of the embodiment of the present application also includes: instructions or programs stored in the memory 609 and executable on the processor 610, and the processor 610 calls the instructions or programs in the memory 609 to execute Fig. 27 The methods executed by the modules shown achieve the same technical effects, and therefore will not be described here in detail to avoid repetition.

[0448] The embodiment of the present application also provides a network side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the following Fig.19 The steps of the method embodiment shown. This network side device embodiment corresponds to the above-mentioned information determination method embodiment applied to the network side device, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this network side device embodiment and can achieve the same technical effect.

[0449] Specifically, the embodiment of the present application also provides a network side device. Fig.31As shown, the network side device 700 includes: an antenna 701, a radio frequency device 702, a baseband device 703, a processor 704 and a memory 705. The antenna 701 is connected to the radio frequency device 702. In the uplink direction, the radio frequency device 702 receives information through the antenna 701 and sends the received information to the baseband device 703 for processing. In the downlink direction, the baseband device 703 processes the information to be sent and sends it to the radio frequency device 702. The radio frequency device 702 processes the received information and sends it out through the antenna 701.

[0450] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 703, which includes a baseband processor.

[0451] The baseband device 703 may include, for example, at least one baseband board on which a plurality of chips are arranged. Fig.31 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 705 through a bus interface to call the program in the memory 705 to execute the network device operations shown in the above method embodiment.

[0452] The network side device may further include a network interface 706, which is, for example, a Common Public Radio Interface (CPRI).

[0453] Specifically, the network side device 700 of the embodiment of the present application further includes: instructions or programs stored in the memory 705 and executable on the processor 704, and the processor 704 calls the instructions or programs in the memory 705 to execute Fig.28 The methods executed by the modules shown achieve the same technical effects, and therefore will not be described here in detail to avoid repetition.

[0454] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned information determination method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0455] 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 computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0456] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned information determination method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0457] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0458] The embodiments of the present application further provide a computer program / program product, which is stored in a storage medium and is executed by at least one processor to implement the various processes of the above-mentioned information determination method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0459] An embodiment of the present application also provides an information determination system, including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the information determination method applied to the terminal as described above, and the network side device can be used to execute the steps of the information determination method applied to the network side device as described above.

[0460] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0461] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, disk, CD, etc.), including several instructions to enable a terminal or a network-side device to execute the methods described in each embodiment of the present application.

[0462] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of the present application and the scope of protection of the claims, and these implementation methods are all within the protection of the present application.

Claims

1. A method for determining information, characterized in that: include: The terminal receives a random access response RAR message sent by a network side device, where the RAR message includes at least one media access control MAC sub-protocol data unit PDU, and a target MAC sub-PDU in the at least one MAC sub-PDU includes target indication information; The terminal determines the type of the target MAC sub-PDU based on the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU and at least one of the target indication information.

2. The method according to claim 1, characterized in that In a case where the RAR message is a message of a four-step random access process, the target indication information includes first indication information, and the terminal determines the type of the target MAC sub-PDU based on the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU and at least one item of the target indication information, including at least one of the following: When the first indication information is a first preset value, the terminal determines, based on the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU, that the target MAC sub-PDU is a first type of MAC sub-PDU or a second type of MAC sub-PDU, wherein the first type of MAC sub-PDU includes backoff indication information, and the second type of MAC sub-PDU includes padding; In a case where the first indication information is a second preset value, the terminal determines that the target MAC sub-PDU is a third type of MAC sub-PDU, and the third type of MAC sub-PDU includes random access preamble identifier RAPID information.

3. The method according to claim 1, characterized in that In a case where the RAR message is a message of a two-step random access process, the target indication information includes first indication information or second indication information, and the terminal determines the type of the target MAC sub-PDU based on the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU and at least one of the target indication information, including at least one of the following: In the case where the second indication information is a third preset value, if the first indication information is a first preset value, the terminal determines that the target MAC sub-PDU is a first type of MAC sub-PDU or a second type of MAC sub-PDU based on the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU, the first type of MAC sub-PDU includes backoff indication information, and the second type of MAC sub-PDU includes Padding; In the case where the second indication information is the third preset value, if the first indication information is the second preset value, the terminal determines that the target MAC sub-PDU is a fourth type of MAC sub-PDU, and the fourth type of MAC sub-PDU is a Success Random Access Response SuccessRAR MAC sub-PDU; When the second indication information is a fourth preset value, the terminal determines that the target MAC sub-PDU is a fifth type of MAC sub-PDU, and the fifth type of MAC sub-PDU is a fallback random access response FallbackRAR MAC sub-PDU.

4. The method according to claim 2 or 3, characterized in that: The terminal determines, based on the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU, that the target MAC sub-PDU is a first type of MAC sub-PDU or a second type of MAC sub-PDU, including: In a case where the target MAC sub-PDU is the first MAC sub-PDU in the at least one MAC sub-PDU, the terminal determines that the target MAC sub-PDU is a MAC sub-PDU of the first type; or In a case where the target MAC sub-PDU is not the first MAC sub-PDU among the at least one MAC sub-PDU, the terminal determines that the target MAC sub-PDU is the second type of MAC sub-PDU.

5. The method according to any one of claims 2 to 4, characterized in that: The first indication information is 1-bit indication information.

6. The method according to any one of claims 2 to 5, characterized in that: In the case where the RAR message is a message of a four-step random access procedure: If the target MAC sub-PDU is a MAC sub-PDU of the first type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of the first indication information, 3 bits of reserved field, and 4 bits of backoff indication information; or If the target MAC sub-PDU is a MAC sub-PDU of the second type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of the first indication information, and a 7-bit reserved field; or If the target MAC sub-PDU is a MAC sub-PDU of the third type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of the first indication information, 1 bit of the reserved field, and 6 bits of RAPID information.

7. The method according to any one of claims 3 to 6, characterized in that: In the case where the RAR message is a message of a two-step random access procedure: If the target MAC sub-PDU is a MAC sub-PDU of the first type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of second indication information, 1 bit of first indication information, 2 bits of reserved field, and 4 bits of backoff indication information; or If the target MAC sub-PDU is a MAC sub-PDU of the second type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of second indication information, 1 bit of first indication information, and 6 bits of reserved field; or If the target MAC sub-PDU is a MAC sub-PDU of the fourth type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of second indication information, 1 bit of first indication information, 2 bits of third indication information, and a 4-bit reserved field, wherein the third indication information is used to indicate the number of MAC sub-PDUs concatenated with the target MAC sub-PDU; or If the target MAC sub-PDU is a MAC sub-PDU of the fifth type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of second indication information, 1 bit of reserved field, and 6 bits of RAPID information.

8. The method according to claim 6 or 7, characterized in that: The reserved field includes 1 bit of fourth indication information; The fourth indication information is used to indicate at least one of the following: Whether the terminal uses the same uplink beam to repeatedly transmit the message Msg3; The format of the MAC RAR unit or FallbackRAR unit in the target MAC sub-PDU.

9. The method according to claim 8, characterized in that The fourth indication information indicates the format of the MAC RAR unit or the FallbackRAR unit in the target MAC sub-PDU, including at least one of the following: The fourth indication information indicates whether the MAC RAR unit carries a temporary cell radio network temporary identifier C-RNTI; The fourth indication information indicates whether the MAC RAR unit carries an uplink UL authorization; The fourth indication information indicates whether the FallbackRAR unit carries a temporary C-RNTI; The fourth indication information indicates whether the FallbackRAR unit carries UL authorization.

10. The method according to any one of claims 2 to 9, characterized in that: The method further comprises: The terminal determines a MAC sub-PDU corresponding to the terminal based on the type of the target MAC sub-PDU.

11. The method according to claim 10, characterized in that The terminal determines, based on the type of the target MAC sub-PDU, a MAC sub-PDU corresponding to the terminal, including: In a case where the RAR message is a message of a four-step random access process, if the target MAC sub-PDU is a MAC sub-PDU of the third type, the terminal determines whether the target MAC sub-PDU is a MAC sub-PDU corresponding to the terminal based on the RAPID information in the target MAC sub-PDU; or In the case where the RAR message is a message of a two-step random access process, if the target MAC sub-PDU is a fifth type of MAC sub-PDU, the terminal determines whether the target MAC sub-PDU is a MAC sub-PDU corresponding to the terminal based on the RAPID information in the target MAC sub-PDU.

12. A method for determining information, characterized in that: include: The network side device sends a RAR message to the terminal, where the RAR message includes at least one MAC sub-PDU, and a target MAC sub-PDU in the at least one MAC sub-PDU includes target indication information; Among them, at least one item of the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU and the target indication information is used to indicate the type of the target MAC sub-PDU.

13. The method according to claim 12, characterized in that In the case where the RAR message is a message of a four-step random access process, the target indication information includes first indication information; wherein, In a case where the first indication information is a first preset value, the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU is used to indicate that the target MAC sub-PDU is a first type of MAC sub-PDU or a second type of MAC sub-PDU, the first type of MAC sub-PDU includes backoff indication information, and the second type of MAC sub-PDU includes Padding; or In a case where the first indication information is a second preset value, the target MAC sub-PDU is a third type of MAC sub-PDU, and the third type of MAC sub-PDU includes RAPID information.

14. The method according to claim 12, characterized in that In the case where the RAR message is a message of a two-step random access process, the target indication information includes first indication information or second indication information, and at least one of the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU, the first indication information, and the second indication information is used to indicate the type of the target MAC sub-PDU; wherein, In the case where the second indication information is a third preset value, if the first indication information is a first preset value, the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU is used to indicate that the target MAC sub-PDU is a first type of MAC sub-PDU or a second type of MAC sub-PDU, the first type of MAC sub-PDU includes backoff indication information, and the second type of MAC sub-PDU includes Padding; or In the case where the second indication information is the third preset value, if the first indication information is the second preset value, the target MAC sub-PDU is a fourth type of MAC sub-PDU, and the fourth type of MAC sub-PDU is a Success Random Access Response SuccessRAR MAC sub-PDU; or When the second indication information is the fourth preset value, the target MAC sub-PDU is a fifth type of MAC sub-PDU, and the fifth type of MAC sub-PDU is a fallback random access response FallbackRAR MAC sub-PDU.

15. The method according to claim 13 or 14, characterized in that In a case where the target MAC sub-PDU is the first MAC sub-PDU in the at least one MAC sub-PDU, the target MAC sub-PDU is a MAC sub-PDU of the first type; or In a case where the target MAC sub-PDU is not the first MAC sub-PDU in the at least one MAC sub-PDU, the target MAC sub-PDU is the second type of MAC sub-PDU.

16. The method according to any one of claims 13 to 15, characterized in that The first indication information is 1-bit indication information.

17. The method according to any one of claims 13 to 16, characterized in that In the case where the RAR message is a message of a four-step random access procedure: If the target MAC sub-PDU is a MAC sub-PDU of the first type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of the first indication information, 3 bits of reserved field, and 4 bits of backoff indication information; or If the target MAC sub-PDU is a MAC sub-PDU of the second type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of the first indication information, and a 7-bit reserved field; or If the target MAC sub-PDU is a MAC sub-PDU of the third type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of the first indication information, 1 bit of the reserved field, and 6 bits of RAPID information.

18. The method according to any one of claims 14 to 17, characterized in that: In the case where the RAR message is a message of a two-step random access procedure: If the target MAC sub-PDU is a MAC sub-PDU of the first type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of second indication information, 1 bit of first indication information, 2 bits of reserved field, and 4 bits of backoff indication information; or If the target MAC sub-PDU is a MAC sub-PDU of the second type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of second indication information, 1 bit of first indication information, and 6 bits of reserved field; or If the target MAC sub-PDU is a MAC sub-PDU of the fourth type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of second indication information, 1 bit of first indication information, 2 bits of third indication information, and a 4-bit reserved field, wherein the third indication information is used to indicate the number of MAC sub-PDUs concatenated with the target MAC sub-PDU; or If the target MAC sub-PDU is a MAC sub-PDU of the fifth type, the MAC subheader of the target MAC sub-PDU includes: 1 bit of second indication information, 1 bit of reserved field, and 6 bits of RAPID information.

19. The method according to claim 17 or 18, characterized in that The reserved field includes 1 bit of fourth indication information; The fourth indication information is used to indicate at least one of the following: Whether the terminal uses the same uplink beam to repeatedly transmit the message Msg3; The format of the MAC RAR unit or FallbackRAR unit in the target MAC sub-PDU.

20. The method according to claim 19, characterized in that The fourth indication information indicates the format of the MAC RAR unit or the FallbackRAR unit in the target MAC sub-PDU, including at least one of the following: The fourth indication information indicates whether the MAC RAR unit carries a temporary cell radio network temporary identifier C-RNTI; The fourth indication information indicates whether the MAC RAR unit carries an uplink UL authorization; The fourth indication information indicates whether the FallbackRAR unit carries a temporary C-RNTI; The fourth indication information indicates whether the FallbackRAR unit carries UL authorization.

21. An information determination device, characterized in that: The device comprises: A receiving module, configured to receive a random access response RAR message sent by a network side device, wherein the RAR message includes at least one MAC sub-protocol data unit PDU, and a target MAC sub-PDU in the at least one MAC sub-PDU includes target indication information; The first determination module is used to determine the type of the target MAC sub-PDU based on the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU and at least one of the target indication information.

22. An information determination device, characterized in that: The device comprises: A sending module, configured to send a RAR message to a terminal, wherein the RAR message includes at least one MAC sub-PDU, and a target MAC sub-PDU in the at least one MAC sub-PDU includes target indication information; Among them, at least one item of the sorting information of the target MAC sub-PDU in the at least one MAC sub-PDU and the target indication information is used to indicate the type of the target MAC sub-PDU.

23. A terminal, characterized in that: The method comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the information determination method according to any one of claims 1 to 11 are implemented.

24. A network side device, characterized in that: It comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the information determination method according to any one of claims 12 to 20 are implemented.

25. A chip, characterized in that: The chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the steps of the information determination method as described in any one of claims 1-11, or to implement the steps of the information determination method as described in any one of claims 12-20.

26. A readable storage medium, characterized in that: The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, the program or instruction implements the steps of the information determination method according to any one of claims 1 to 11, or implements the steps of the information determination method according to any one of claims 12 to 20.

Images