CN114271015A

CN114271015A - Information indication method and device, terminal equipment and network equipment

Info

Publication number: CN114271015A
Application number: CN201980099431.9A
Authority: CN
Inventors: 石聪; 林雪
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-10-24
Filing date: 2019-10-24
Publication date: 2022-04-01
Anticipated expiration: 2039-10-24
Also published as: WO2021077377A1; CN114271015B

Abstract

The embodiment of the application provides an information indication method and device, terminal equipment and network equipment, wherein the method comprises the following steps: the method comprises the steps that terminal equipment receives a first message, wherein the first message comprises a media access control protocol data unit (MAC PDU), and the MAC PDU carries first indication information and/or second indication information; the first indication information is used for determining whether the MAC PDU contains a first type of MAC sub PDU, and the second indication information is used for determining the number of the first type of MAC sub PDU contained in the MAC PDU; the first type of MAC subpPDU is a MAC subpPDU containing RRC messages.

Description

Information indication method and device, terminal equipment and network equipment

Technical Field

The embodiment of the application relates to the technical field of mobile communication, in particular to an information indication method and device, terminal equipment and network equipment.

Background

In a Long Term Evolution (LTE) system, a four-step random access procedure is adopted in a random access procedure. The four-step random access procedure in the LTE system is still used in a New Radio (NR) system. With the discussion of standardization, it is considered that the four-step random access process is cumbersome and brings a large time delay to the access of the terminal, so a two-step random access process is proposed. Msg1 and msg3 in the four-step random access process are transmitted through msgA in the two-step random access process, and msg2 and msg4 in the four-step random access process are transmitted through msgB in the two-step random access process.

In the four-step random Access process, the msgB may include one or more Media Access Control (MAC) sub Protocol Data units (sub PDUs) containing Radio Resource Control (RRC) messages, however, when the terminal device decodes the MAC PDU of the msgB, it is not known whether the MAC PDU contains an RRC message, and even not known that the MAC PDU contains several RRC messages.

Disclosure of Invention

The embodiment of the application provides an information indication method and device, terminal equipment and network equipment.

The information indication method provided by the embodiment of the application comprises the following steps:

the method comprises the steps that terminal equipment receives a first message, wherein the first message comprises an MAC PDU, and the MAC PDU carries first indication information and/or second indication information;

the first indication information is used for determining whether the MAC PDU contains a first type of MAC sub PDU, and the second indication information is used for determining the number of the first type of MAC sub PDU contained in the MAC PDU; the first type of MAC subpPDU is a MAC subpPDU containing RRC messages.

the method comprises the steps that network equipment sends a first message, wherein the first message comprises an MAC PDU, and the MAC PDU carries first indication information and/or second indication information;

The information indicating device provided by the embodiment of the application comprises:

a receiving unit, configured to receive a first message, where the first message includes a MAC PDU, and the MAC PDU carries first indication information and/or second indication information;

a sending unit, configured to send a first message, where the first message includes a MAC PDU, and the MAC PDU carries first indication information and/or second indication information;

The terminal device provided by the embodiment of the application comprises a processor and a memory. The memory is used for storing computer programs, and the processor is used for calling and running the computer programs stored in the memory and executing the information indication method.

The network equipment provided by the embodiment of the application comprises a processor and a memory. The memory is used for storing computer programs, and the processor is used for calling and running the computer programs stored in the memory and executing the information indication method.

The chip provided by the embodiment of the application is used for realizing the information indication method.

Specifically, the chip includes: and the processor is used for calling and running the computer program from the memory so that the equipment provided with the chip executes the information indication method.

The computer-readable storage medium provided by the embodiment of the present application is used for storing a computer program, and the computer program enables a computer to execute the information indication method.

The computer program product provided by the embodiment of the application comprises computer program instructions, and the computer program instructions enable a computer to execute the information indication method.

The computer program provided by the embodiment of the present application, when running on a computer, causes the computer to execute the above information indication method.

Through the technical scheme, the terminal equipment can determine whether the MAC PDU contains the first-class MAC sub PDU (namely, the MAC sub PDU containing the RRC message) or not through the first indication information carried in the MAC PDU, and can determine the number of the first-class MAC sub PDU (namely, the MAC sub PDU containing the RRC message) contained in the MAC PDU through the second indication information carried in the MAC PDU, so that the terminal equipment can be ensured to correctly receive the first message (such as msgB).

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application;

fig. 2-1 is a flowchart of a four-step random access procedure provided by an embodiment of the present application;

fig. 2-2 is a structural diagram of a MAC PDU provided in an embodiment of the present application;

FIGS. 2-3 are block diagrams of the E/T/R/R/BI sub header provided in the embodiments of the present application;

FIGS. 2-4 are block diagrams of an E/T/RAPID sub-header provided in an embodiment of the present application;

fig. 2-5 are structural diagrams of a MAC RAR provided in an embodiment of the present application;

fig. 2-6 are diagrams illustrating a relationship between a four-step random access procedure and a two-step random access procedure provided by an embodiment of the present application;

fig. 3 is a schematic flowchart of an information indication method according to an embodiment of the present application;

FIG. 4-1 is a block diagram of an msgB MAC PDU according to an embodiment of the present application;

fig. 4-2 is a format diagram of subheader 1 provided in the embodiment of the present application;

fig. 4-3 are format diagrams of subheader 2 provided in an embodiment of the present application;

fig. 4-4 are format diagrams of subheader 3 provided in embodiments of the present application;

FIGS. 4-5 are format diagrams of subheaders 4 provided in embodiments of the present application;

FIG. 5-1 is a first format diagram of an enhanced subheader 2 provided by an embodiment of the present application;

fig. 5-2 is a first format diagram of an enhanced subheader 3 provided by an embodiment of the present application;

fig. 5-3 are format diagrams of an enhanced subheader 1 provided by an embodiment of the present application;

FIGS. 5-4 are format diagrams of subheaders of new MAC sub-PDUs according to embodiments of the present application;

5-5 are format diagrams of enhanced subheader 2 provided by embodiments of the present application;

FIGS. 5-6 are format diagrams of enhanced subheader 3 provided by embodiments of the present application;

fig. 6 is a first schematic structural diagram of an information indicating apparatus according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of an information indicating apparatus according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

FIG. 9 is a schematic structural diagram of a chip of an embodiment of the present application;

fig. 10 is a schematic block diagram of a communication system according to an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD), a system, a 5G communication system, a future communication system, or the like.

Illustratively, a communication system 100 applied in the embodiment of the present application is shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal 120 (or referred to as a communication terminal, a terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminals located within the coverage area. Optionally, the Network device 110 may be an evolved Node B (eNB or eNodeB) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN), or the Network device may be a mobile switching center, a relay station, an Access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a Network-side device in a 5G Network, or a Network device in a future communication system, and the like.

The communication system 100 further comprises at least one terminal 120 located within the coverage area of the network device 110. As used herein, "terminal" includes, but is not limited to, connection via a wireline, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a Digital cable, a direct cable connection; and/or another data connection/network; and/or via a Wireless interface, e.g., to a cellular Network, a Wireless Local Area Network (WLAN), a digital television Network such as a DVB-H Network, a satellite Network, an AM-FM broadcast transmitter; and/or means of another terminal arranged to receive/transmit communication signals; and/or Internet of Things (IoT) devices. A terminal that is arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; personal Communications Systems (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, and data Communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. A terminal can refer to an access terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, User terminal, wireless communication device, User agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having Wireless communication capabilities, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal in a 5G network, or a terminal in a future evolved PLMN, etc.

Optionally, a Device to Device (D2D) communication may be performed between the terminals 120.

Alternatively, the 5G communication system or the 5G network may also be referred to as a New Radio (NR) system or an NR network.

Fig. 1 exemplarily shows one network device and two terminals, and optionally, the communication system 100 may include a plurality of network devices and may include other numbers of terminals within the coverage of each network device, which is not limited in this embodiment of the present application.

Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that a device having a communication function in a network/system in the embodiments of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal 120 having a communication function, and the network device 110 and the terminal 120 may be the specific devices described above and are not described again here; the communication device may also include other devices in the communication system 100, such as other network entities, for example, a network controller, a mobility management entity, and the like, which is not limited in this embodiment.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions related to the embodiments of the present application are described below.

The random access is an important process for establishing wireless connection between the terminal equipment and the network side, and uplink synchronization can be obtained between the terminal equipment and the base station through the random access to apply for uplink resources. The random access procedure is divided into a contention-based random access procedure and a non-contention-based random access procedure. Wherein, the contention based random access procedure includes a four-step random access procedure and a two-step random access procedure, and fig. 2-1 shows a flow chart of the four-step random access procedure, as shown in fig. 2-1, the four-step random access procedure includes the following steps:

step 201: the terminal device sends msg1 to the base station.

Here, the terminal device sending msg1 to the base station may specifically be implemented by the following procedures:

-the terminal device determining the relation (configured by higher layers) of Synchronization Signal Block (SSB) to PRACH resources;

-the terminal device receives a set of SSBs and determines its Reference Signal Received Power (RSRP) value, and selects an appropriate SSB according to a threshold;

-the terminal device determining Physical Random Access Channel (PRACH) resources based on the selected SSBs and their correspondence with RACH resources;

-the terminal device transmitting the preamble on the PRACH time frequency domain resources.

Step 202: the terminal device receives msg2 sent by the base station.

Here, the receiving, by the terminal device, the msg2 sent by the base station may specifically be implemented by the following procedures:

the terminal device opens an RAR Window (RA-Response Window) at a PDCCH (Physical Downlink Control Channel) timing (acquisition) after the preamble is transmitted and monitors the PDCCH during the Window operation, wherein the PDCCH is a PDCCH scrambled with an RA-RNTI. RA-RNTI is related to PRACH time frequency resources selected by the terminal equipment, and the calculation of RA-RNTI is as follows:

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

wherein, s _ id is the index of the first OFDM symbol of the PRACH resource (s _ id is more than or equal to 0 and less than 14);

t _ id is the index of the first time slot of the PRACH resource in the system frame (t _ id is more than or equal to 0 and less than 80);

f _ id is the index of PRACH occasion in frequency domain (0 ≦ f _ id < 8);

UL _ carrier _ id is an Uplink (UL) carrier used for preamble index transmission.

After the terminal device successfully monitors the PDCCH scrambled by the RA-RNTI, the terminal device can obtain the PDSCH scheduled by the PDCCH, wherein the PDCCH includes a Random Access Response (RAR) (i.e., msg2), a data format of the MAC PDU of msg2 is shown in fig. 2-2, and the MAC PDU includes a plurality of MAC sub-PDUs, which are respectively MAC sub-PDU 1, MAC sub-PDU 2, MAC sub-PDU 3, and the like. Wherein, the MAC sub PDU1 contains a Backoff Indication (BI), the MAC sub PDU1 includes an E/T/R/R/BI sub header, and the structure of the E/T/R/R/BI sub header is shown in FIGS. 2-3. The MAC sub pdu2 contains a Random Access Preamble ID (RAPID), and the MAC sub pdu2 includes an E/T/RAPID sub header, and the structure of the E/T/RAPID sub header is shown in fig. 2-4. The remaining MAC sub-pdus (e.g., MAC sub-pdu 3) include RAPID and RAR, for example, MAC sub-pdu 3, MAC sub-pdu 3 includes E/T/RAPID sub-header and MAC RAR, the structure of E/T/RAPID sub-header is shown in fig. 2-4, and the structure of MAC RAR is shown in fig. 2-5. The respective information in fig. 2-3 to 2-5 is described as follows:

BI: and the back-off indication information is used for indicating the back-off time of retransmitting the first step message.

RAPID: the network responds to the received preamble index.

R: representing a reserved bit area.

TAC: a Timing Advance Command (Timing Advance Command) for adjusting the uplink Timing.

UL Grant: and an Uplink Grant (Uplink Grant) for indicating a resource for Uplink transmission of the Msg 3.

TC-RNTI: a Temporary cell RNTI (Temporary C-RNTI) for the terminal to subsequently scramble the transmitted Msg3 message.

Step 203: the terminal device sends msg3 to the base station.

msg3 is used primarily to send UE IDs to the network to resolve contention conflicts. For example, if the random procedure is an initial access random procedure, an RRC layer message, that is, a CCCH SDU, is carried in msg3, where the RRC layer message includes a UE ID and a connection establishment request (RRCSetupRequest); if the RRC reestablishment is carried, a reestablishment request (RRCRESTABLISHRNITENTRequest) is carried.

Step 204: the terminal device receives msg4 sent by the base station.

msg4 has two roles, one is for contention conflict resolution; the second is the transmission of RRC configuration messages to the terminal. Here, if the terminal device receives DCI format 1_0 scrambled by a Cell-Radio Network Temporary Identifier (C-RNTI) and the corresponding PDSCH, the random access is completed; and if the terminal receives the DCI format 1_0 scrambled by the TC-RNTI and the corresponding PDSCH, and the comparison of the contents is successful, the random access is completed.

The two-step random access procedure is standardizing the discussion procedure and is in the research phase. The two-step random access process can improve the time delay and simultaneously reduce the signaling overhead, and a basic mode is that msgA transmits msg1 and msg3 of the four-step random access process, and msgB transmits msg2 and msg4 of the four-step random access process, as shown in fig. 2 to 6.

The msgB may include, among others, a successful random access response (success rar), a fallback random access response (fallback rar), and a fallback Indication (BI). Further, RRC messages of a plurality of terminal devices cannot be multiplexed in the msgB; the success rar cannot be split into multiple messages, i.e. the success rar must be included as a whole in one msgB. Furthermore, succeessrar and fallback rar can be multiplexed in one msgB.

Various types of information contained in the msgB are explained below.

For success rar, a UE contention resolution identity containing 12 bits of TAC, 16 bits of C-RNTI, and 48 bits is required. Further, the information field of the UE contention resolution identity should be located in a payload (payload) of the contention rar MAC sub-pdu, where the contention rar MAC sub-pdu refers to a MAC sub-pdu including the contention rar. Further, the information field of the UE contention resolution identity precedes the load of the MAC sub pdu.

Still further, the RRC messages contained in msgB need to satisfy the following requirements:

1) whether RRC messages need clear indication in msgB; and the RRC message needs to be after success RAR;

2) for the RRC message triggered by the reestablishment case, the msgB may include multiple RRC messages of one terminal device, but how to indicate that the msgB carries the multiple RRC messages of one terminal device needs to be solved.

Based on the above requirement, the following technical solutions of the embodiments of the present application are proposed, which are intended to solve the problem how to indicate whether an RRC message exists in an msgB, and how to indicate that a plurality of RRC messages exist in the msgB.

Fig. 3 is a schematic flowchart of an information indicating method provided in an embodiment of the present application, and as shown in fig. 3, the information indicating method includes the following steps:

step 301: the method comprises the steps that terminal equipment receives a first message, wherein the first message comprises an MAC PDU, and the MAC PDU carries first indication information and/or second indication information; the first indication information is used for determining whether the MAC PDU contains a first type of MAC sub PDU, and the second indication information is used for determining the number of the first type of MAC sub PDU contained in the MAC PDU; the first type of MAC subpPDU is a MAC subpPDU containing RRC messages.

In the embodiment of the application, the network device sends the first message, and the terminal device receives the first message. Optionally, the network device may be a base station, such as a gbb.

In this embodiment of the present application, the first message is msgB in a two-step random access process. Wherein the first message includes a MAC PDU, which may be optionally referred to as an msgB MAC PDU.

In an optional embodiment, the MAC PDU includes at least one of:

a second type of MAC subPDU, wherein the second type of MAC subPDU only comprises a second subheader, and the second subheader comprises BI information;

a third type of MAC sub PDU, wherein the third type of MAC sub PDU comprises a third subheader and successful success RAR;

the first type of MAC subPDU comprises a first subheader and SDU, wherein the SDU comprises RRC information;

a fourth type of MAC sub PDU, wherein the fourth type of MAC sub PDU comprises a fourth subheader and a fallback RAR;

a fifth type of MAC sub-pdu, which contains a fifth subheader and padding (padding), or contains only the fifth subheader (e.g., when the number of bits of padding is 0).

In the above scheme, the second type of MAC sub pdu refers to a MAC sub pdu containing BI information, and optionally, the second type of MAC sub pdu may be referred to as a BI MAC sub pdu.

In the foregoing scheme, the third type of MAC sub pdu refers to a MAC sub pdu including success rar, and optionally, the third type of MAC sub pdu may be referred to as success rar MAC sub pdu.

In the above scheme, the first type of MAC sub pdu refers to a MAC sub pdu including an RRC message, and optionally, the first type of MAC sub pdu may be referred to as an RRC MAC sub pdu.

In the foregoing scheme, the fourth type of MAC sub pdu refers to a MAC sub pdu including fallback rar, and optionally, the fourth type of MAC sub pdu may be referred to as fallback rar MAC sub pdu.

In the foregoing scheme, the fifth type of MAC sub pdu refers to a MAC sub pdu including padding, and optionally, the fifth type of MAC sub pdu may be referred to as padding MAC sub pdu. When padding is 0, this MAC sub pdu may not contain padding, that is, only the MAC sub header.

In an optional implementation manner, for a case that the MAC PDU includes a plurality of MAC sub-PDUs of a first type, the plurality of MAC sub-PDUs of the first type include different RRC messages of the same terminal device.

For example: one RRC MAC sub pdu includes one RRC message, and a plurality of RRC MAC sub pdus include a plurality of RRC messages in total, and the plurality of RRC messages are messages of the same terminal device. This scenario is mainly used when the 2-step CBRA reestablishes a scenario in RRC (RRC re-establishment), the network may respond to an RRC reestablishment message (RRC re-establishment message) or an RRC reconfiguration message (RRC reconfiguration message) of the same terminal device in msgB.

In an optional implementation manner, in the MAC PDUs, the first type MAC sub-PDU is located after the third type MAC sub-PDU, and both the first type MAC sub-PDU and the third type MAC sub-PDU respond to the same terminal device. .

For example: in the msgB MAC PDU, if RRC MAC sub PDU is included, the RRC MAC sub PDU needs to be located after a success rar MAC sub PDU of the same terminal device.

The structure of the msgB MAC PDU is illustrated below in conjunction with fig. 4-1, it should be noted that the structure of the msgB MAC PDU shown in fig. 4-1 is only an alternative example.

As shown in fig. 4-1, one msgB MAC PDU may contain one or more MAC sub-PDUs, which may be as follows:

1) BI MAC sub pdu: the BI MAC subPDU contains a MAC subheader (MAC subheader) containing at least BI information, a reference for example subheader 1 in fig. 4-1. Further, optionally, the format of the subheader 1 is as shown in fig. 4-2.

2) success RAC MAC sub PDU: the success rar MAC sub pdu includes one MAC sub header (refer to subheader 2 in fig. 4-1) and one success rar. Further, this MAC subheader does not contain a 48-bit UE contention resolution identity. Further, optionally, the format of the subheader 2 is as shown in fig. 4-3.

3) RRC MAC sub pdu: the RRC MAC sub pdu includes a MAC sub header (refer to subheader 3 in fig. 4-1) and a Service Data Unit (SDU) including an RRC message. Further, the subheader 3 may alternatively be of two types according to the length of the L field therein, and the format of the subheader 3 is as shown in fig. 4-4.

4) fallback rar MAC sub pdu: the fallback rar MAC sub-pdu includes one MAC sub-header (refer to subheader 4 in fig. 4-1) and one fallback rar. Further, optionally, the format of the subheader 4 is as shown in fig. 4-5.

The msgB MAC PDU may include one or more RRC MAC sub-PDUs of the same UE, where an RRC message in the RRC MAC sub-PDUs belongs to one terminal device. In addition, the RRC MAC sub pdu needs to be subsequent to the success rar MAC sub pdu, and the success rar MAC sub pdu and the RRC MAC sub pdus belong to one terminal device.

It should be noted that the subhead 1 shown in fig. 4-1 corresponds to the second subhead in the embodiment of the present application, the subhead 2 corresponds to the third subhead in the embodiment of the present application, the subhead 3 corresponds to the fourth subhead in the embodiment of the present application, and the subhead 4 corresponds to the fourth subhead in the embodiment of the present application.

When decoding a MAC PDU, the terminal device does not know whether the MAC PDU includes an RRC message or not, and does not know that several RRC messages are included. Therefore, according to the technical scheme of the embodiment of the application, the position and/or the number of the RRC message in the MAC PDU are determined by carrying the first indication information and/or the second indication information in the MAC PDU. The following describes implementation of the first indication information and/or the second indication information in detail.

In a first mode

The third subheader carries the first indication information, and the first indication information is used for indicating whether the third type of MAC subPDU where the third subheader is located follows the first type of MAC subPDU or not; and the first subheader carries the first indication information, where the first indication information is used to indicate whether the first type of MAC sub-pdu where the first subheader is located follows the first type of MAC sub-pdu.

For example: referring to fig. 4-1, the format of subheader 2 is enhanced, where the subheader 2 at least contains first indication information, and the first indication information is used to indicate whether the subsequent RRC MAC sub-pdu (or RRC message) of the subheader 2 is followed by the subsequent message rar MAC sub-pdu. In addition, the format of the subheader 3 is enhanced, and the subheader 3 at least contains first indication information, which is used to indicate whether the RRC MAC sub pdu where the subheader 3 is located is followed by the RRC MAC sub pdu (or followed by the RRC message).

In a specific implementation, the first subheader can reuse the MAC subheader format of R-15, so that the first subheader can be enhanced.

The format of the enhanced subheader 2 and subheader 3 is explained below in connection with specific examples.

(1) The format of the enhanced subheader 2 (i.e., the subheader of the success rar MAC sub-pdu, i.e., the third subheader) is shown in fig. 5-1, wherein,

t: indicating the type and indicating different types of MAC sub PDU;

e: an enhanced indication field indicating whether the MAC sub pdu is followed by an RRC message MAC sub pdu.

Here, E represents the first indication information, and it should be noted that the name of "E" is merely an exemplary description.

In one example, E-0 (or 1) indicates that the MAC sub pdu is followed by an RRC message MAC sub pdu, and E-1 (or 0) indicates that the MAC sub pdu is not followed by an RRC message MAC sub pdu.

The enhanced indication field in the third subheader is illustrated below by other description means:

(2) the format of the enhanced subheader 3 (i.e., the subheader of the RRC MAC sub pdu, i.e., the first subheader) is shown in fig. 5-2, wherein,

f: indicating whether length information carried by the subheader is 8 bits or 16 bits;

l: length information, which may be 8 bits (as shown in (a)) or 16 bits (as shown in (b));

In one example, E-0 (or 1) indicates that the MAC sub pdu after the MAC sub pdu is still the RRC message MAC sub pdu, and E-1 (or 0) indicates that the MAC sub pdu after the MAC sub pdu is not the RRC message MAC sub pdu.

The enhanced indication field in the first subheader is illustrated below by other descriptive means:

mode two

The second type of MAC sub PDU carries the second indication information, and the second indication information is used for indicating the number of the first type of MAC sub PDU contained in the MAC PDU; and the third subheader carries the first indication information, where the first indication information is used to indicate whether the third type of MAC subPDU where the third subheader is located follows the first type of MAC subPDU.

For example: referring to fig. 4-1, the format of the subheader 1 is enhanced, and the subheader 1 contains at least second indication information for indicating the number of RRC MAC sub-PDUs contained in the msgB MAC PDU. The terminal equipment can know that several RRC messages are contained in the msgB MAC PDU based on the subheader 1, but does not know which MAC sub PDU contains the RRC messages, and for this purpose, the format of the subheader 2 is enhanced, and the subheader 2 at least contains first indication information which is used for indicating whether the subsequent RRC MAC sub PDU (or whether the subsequent RRC message is followed) of the subsequent success RAR MAC sub PDU of the subheader 2.

The format of the enhanced subheader 1 and subheader 2 is explained below in conjunction with specific examples.

(1) The format of the enhanced subheader 1 (i.e., the subheader of the BI MAC subPDU, i.e., the second subheader) is shown in fig. 5-3, wherein,

t: indicating the type and indicating different types of MAC sub PDU;

n: indicates the number of RRC MAC sub-PDUs included in the msgB MAC PDU.

(2) The format of the enhanced subheader 2 (i.e., the subheader of the success rar MAC sub-pdu, i.e., the third subheader) is shown in fig. 5-1, wherein,

t: indicating the type and indicating different types of MAC sub PDU;

Mode III

The MAC PDU also comprises a sixth type of MAC sub PDU which only comprises a sixth subheader, and the sixth subheader is positioned behind the third type of MAC sub PDU; the third subheader carries the first indication information, and the first indication information is used for indicating whether the third type of MAC subPDU where the third subheader is located follows the first type of MAC subPDU or not; and the sixth subheader carries the second indication information, where the second indication information is used to indicate the number of the first type of MAC sub-PDUs included in the MAC PDU.

For example: referring to fig. 4-1, the format of subheader 2 is enhanced, where the subheader 2 at least contains first indication information, and the first indication information is used to indicate whether the subsequent RRC MAC sub-pdu (or RRC message) of the subheader 2 is followed by the subsequent message rar MAC sub-pdu. Thus, the terminal device can know which subsequent message MAC sub-pdu will follow the RRC message MAC sub-pdu according to the first indication information, but the terminal device does not know how many RRC message MAC sub-pdus exist, and therefore, a new MAC sub-pdu (i.e. the sixth type of MAC sub-pdu) is introduced, which includes a MAC sub-header that follows the subsequent message MAC sub-pdu and indicates that the subsequent message MAC sub-pdu follows; the new MAC sub PDU carries the second indication information, and how many RRC message MAC sub PDUs can be indicated through the second indication information.

The format of the enhanced subheader 2 and the format of the new MAC subPDU are explained below with specific examples.

t: indicating the type and indicating different types of MAC sub PDU;

(2) The new MAC sub pdu, i.e., the sixth type MAC sub pdu, only includes one subheader, i.e., the sixth subheader, whose format is shown in fig. 5-4, wherein,

n: indicates the number of RRC MAC sub-PDUs included in the msgB MAC PDU.

Mode IV

The third subheader carries the second indication information, where the second indication information is used to indicate the number of the first type of MAC sub-PDUs included in the MAC PDU.

For example: referring to fig. 4-1, the format of the subheader 2 is enhanced, and the subheader 2 at least includes second indication information for indicating the number of RRC MAC sub-PDUs included in the msgB MAC PDU. It should be noted that, by carrying the second indication information in the subheader 2, whether the subsequent to the subsequent success rar MAC sub-pdu of the subheader 2 follows the RRC MAC sub-pdu (or whether the subsequent RRC message follows the subsequent RRC message) is implicitly indicated, and at the same time, the number of the subsequent RRC MAC sub-pdus is also indicated.

The format of the enhanced subheader 2 (i.e., the subheader of the success rar MAC sub-pdu, i.e., the third subheader) is shown in fig. 5-5, wherein,

t: indicating the type and indicating different types of MAC sub PDU;

n: indicates the number of RRC MAC sub-PDUs included in the msgB MAC PDU.

It should be noted that, the number of bits occupied by the above-mentioned new indication field (e.g. E, N) in this embodiment is only exemplary. For example, N occupies 2 bits in fig. 5-3, fig. 5-4, and fig. 5-5, the number of bits occupied by N is not limited to 2 bits, and may also be other number of bits, and optionally, the number of bits occupied by N may be determined according to the number of RRC MAC sub PDUs included in the msgB MAC PDU.

Mode five

The success RAR carries the first indication information and/or the second indication information, and the first indication information is used for indicating whether the first type of MAC sub PDU follows the third type of MAC sub PDU where the success RAR is located; the second indication information is used for indicating the number of the first type of MAC sub-PDUs contained in the MAC PDU.

Here, the first indication information and/or the second indication information may be carried in payload of the success rar. Specifically, the second indication information may be carried in the payload of the success rar, and implicitly indicates whether the RRC MAC sub pdu follows the success rar MAC sub pdu (or whether an RRC message follows the success rar MAC sub pdu) through the second indication information, and at the same time, indicates the number of the RRC MAC sub pdus.

Mode six

The first subhead carries the first indication information, and the first indication information is used for indicating that the first type of MAC sub-PDU where the first subhead is located is an MAC sub-PDU containing RRC message. Further, the first indication information is type indication information, and the type indication information is used to indicate that the type of the first type of MAC sub-pdu where the first subheader is located is a MAC sub-pdu containing an RRC message.

For example: referring to fig. 4-1, the format of the subheader 3 (i.e. the first subheader) is enhanced, and the subheader 3 at least contains first indication information, where the first indication information is used to indicate whether the MAC sub-pdu in which the subheader 3 is located is a MAC sub-pdu containing an RRC message.

The format of the enhanced subheader 3 is explained below in conjunction with specific examples.

The format of the enhanced subheader 3 (i.e., the subheader of the RRC MAC sub pdu, i.e., the first subheader) is shown in fig. 5-6, wherein,

t: and indicating the type, indicating different types of MAC sub PDU.

Here, before the R/F/LCID, a byte (byte) is added, the byte containing at least one type field (i.e., T) capable of indicating that the MAC sub pdu is an RRC MAC sub pdu.

It should be noted that, the number of bits occupied by the above-mentioned newly added indication field T in the embodiment of the present application is only exemplary. For example, T in fig. 5 to 6 occupies 2 bits (can indicate 4 types), the number of bits occupied by T is not limited to 2 bits, and may also be other bits, and optionally, the number of bits occupied by T may be determined according to how many types of MAC sub-pdus need to be indicated.

Fig. 6 is a schematic structural composition diagram of an information indicating apparatus provided in the embodiment of the present application, which is applied to a terminal device, and as shown in fig. 6, the information indicating apparatus includes:

a receiving unit 601, configured to receive a first message, where the first message includes a MAC PDU, and the MAC PDU carries first indication information and/or second indication information;

In an optional embodiment, the MAC PDU includes at least one of:

a third type of MAC sub PDU, wherein the third type of MAC sub PDU comprises a third subheader and a success RAR;

a fifth type of MAC sub PDU that contains a fifth subheader and padding, or contains only the fifth subheader.

In an optional implementation manner, the third subheader carries the first indication information, where the first indication information is used to indicate whether the third type of MAC sub-pdu where the third subheader is located follows the first type of MAC sub-pdu; and the number of the first and second electrodes,

the first subheader carries the first indication information, and the first indication information is used for indicating whether the first type of MAC subPDU is followed by the first type of MAC subPDU where the first subheader is located.

In an optional implementation manner, the second type of MAC sub-PDU carries the second indication information, where the second indication information is used to indicate the number of the first type of MAC sub-PDU included in the MAC PDU; and the number of the first and second electrodes,

the third subheader carries the first indication information, and the first indication information is used for indicating whether the third type of MAC subPDU where the third subheader is located follows the first type of MAC subPDU.

In an optional embodiment, the MAC PDU further includes a sixth type MAC sub PDU, where the sixth type MAC sub PDU includes only a sixth subheader, and the sixth subheader is located after the third type MAC sub PDU;

the third subheader carries the first indication information, and the first indication information is used for indicating whether the third type of MAC subPDU where the third subheader is located follows the first type of MAC subPDU or not; and the number of the first and second electrodes,

the sixth subheader carries the second indication information, where the second indication information is used to indicate the number of the first type of MAC sub-PDUs included in the MAC PDU.

In an optional implementation manner, the third subheader carries the second indication information, where the second indication information is used to indicate a number of the first type of MAC sub-PDUs included in the MAC PDU.

In an optional embodiment, the success rar carries the first indication information and/or the second indication information,

the first indication information is used for indicating whether the first type of MAC sub PDU follows the third type of MAC sub PDU where the success RAR is located;

the second indication information is used for indicating the number of the first type of MAC sub-PDUs contained in the MAC PDU.

In an optional embodiment, the first subheader carries the first indication information, where the first indication information is used to indicate that the first type of MAC sub-pdu where the first subheader is located is a MAC sub-pdu including an RRC message.

In an optional implementation manner, the first indication information is type indication information, and the type indication information is used to indicate that the type of the first type of MAC sub-pdu where the first subheader is located is a MAC sub-pdu containing an RRC message.

In an optional embodiment, in the MAC PDU, the first type MAC sub PDU is located after the third type MAC sub PDU.

In an alternative embodiment, the first message is msgB in a two-step random access procedure.

It should be understood by those skilled in the art that the related description of the information indication apparatus in the embodiments of the present application can be understood by referring to the related description of the information indication method in the embodiments of the present application.

Fig. 7 is a schematic structural diagram of an information indicating apparatus according to an embodiment of the present application, which is applied to a network device, and as shown in fig. 7, the information indicating apparatus includes:

a sending unit 701, configured to send a first message, where the first message includes a MAC PDU, and the MAC PDU carries first indication information and/or second indication information;

In an optional embodiment, the MAC PDU includes at least one of:

Fig. 8 is a schematic structural diagram of a communication device 800 according to an embodiment of the present application. The communication device may be a terminal device or a network device, and the communication device 800 shown in fig. 8 includes a processor 810, and the processor 810 may call and execute a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 8, the communication device 800 may also include a memory 820. From the memory 820, the processor 810 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 820 may be a separate device from the processor 810 or may be integrated into the processor 810.

Optionally, as shown in fig. 8, the communication device 800 may further include a transceiver 830, and the processor 810 may control the transceiver 830 to communicate with other devices, and specifically, may transmit information or data to the other devices or receive information or data transmitted by the other devices.

The transceiver 830 may include a transmitter and a receiver, among others. The transceiver 830 may further include one or more antennas.

Optionally, the communication device 800 may specifically be a network device in the embodiment of the present application, and the communication device 800 may implement a corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the communication device 800 may specifically be a mobile terminal/terminal device according to this embodiment, and the communication device 800 may implement a corresponding process implemented by the mobile terminal/terminal device in each method according to this embodiment, which is not described herein again for brevity.

Fig. 9 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 900 shown in fig. 9 includes a processor 910, and the processor 910 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 9, the chip 900 may further include a memory 920. From the memory 920, the processor 910 can call and run a computer program to implement the method in the embodiment of the present application.

The memory 920 may be a separate device from the processor 910, or may be integrated in the processor 910.

Optionally, the chip 900 may further comprise an input interface 930. The processor 910 may control the input interface 930 to communicate with other devices or chips, and in particular, may obtain information or data transmitted by other devices or chips.

Optionally, the chip 900 may further include an output interface 940. The processor 910 may control the output interface 940 to communicate with other devices or chips, and in particular, may output information or data to the other devices or chips.

Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the chip may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the chip may implement the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, and for brevity, no further description is given here.

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

Fig. 10 is a schematic block diagram of a communication system 1000 provided in an embodiment of the present application. As shown in fig. 10, the communication system 1000 includes a terminal device 1010 and a network device 1020.

The terminal device 1010 may be configured to implement the corresponding function implemented by the terminal device in the foregoing method, and the network device 1020 may be configured to implement the corresponding function implemented by the network device in the foregoing method, for brevity, no further description is provided here.

It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memories are exemplary but not limiting illustrations, for example, the memories in the embodiments of the present application may also be Static Random Access Memory (SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM, ESDRAM), Synchronous Link DRAM (SLDRAM), Direct Rambus RAM (DR RAM), and the like. That is, the memory in the embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing the computer program.

Optionally, the computer-readable storage medium may be applied to the network device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, which is not described herein again for brevity.

Optionally, the computer-readable storage medium may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Embodiments of the present application also provide a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions enable the computer to execute corresponding processes implemented by the network device in the methods in the embodiment of the present application, which are not described herein again for brevity.

Optionally, the computer program product may be applied to the mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiment of the present application, which are not described herein again for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to the network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the network device in each method in the embodiment of the present application, and for brevity, details are not described here again.

Optionally, the computer program may be applied to the mobile terminal/terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is enabled to execute the corresponding process implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein again for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

An information indication method, the method comprising:

the method comprises the steps that terminal equipment receives a first message, wherein the first message comprises a media access control protocol data unit (MAC PDU), and the MAC PDU carries first indication information and/or second indication information;

the first indication information is used for determining whether the MAC PDU contains a first type of MAC sub PDU, and the second indication information is used for determining the number of the first type of MAC sub PDU contained in the MAC PDU; the first type of MAC subpPDU is a MAC subpPDU containing RRC messages.
The method of claim 1, wherein the MAC PDU comprises at least one of:

a second type of MAC subPDU, wherein the second type of MAC subPDU only comprises a second subheader, and the second subheader comprises BI information;

a third type of MAC sub PDU, wherein the third type of MAC sub PDU comprises a third subheader and a successful random access response success RAR;

the first type of MAC subPDU comprises a first subheader and SDU, wherein the SDU comprises RRC information;

a fourth type of MAC sub PDU, wherein the fourth type of MAC sub PDU comprises a fourth subheader and a fallback random access response fallback RAR;

a fifth type of MAC sub PDU that contains a fifth subheader and padding, or contains only the fifth subheader.
The method of claim 2, wherein,

the third subheader carries the first indication information, and the first indication information is used for indicating whether the third type of MAC subPDU where the third subheader is located follows the first type of MAC subPDU or not; and the number of the first and second electrodes,

the first subheader carries the first indication information, and the first indication information is used for indicating whether the first type of MAC subPDU is followed by the first type of MAC subPDU where the first subheader is located.
The method of claim 2, wherein,

the second type of MAC sub PDU carries the second indication information, and the second indication information is used for indicating the number of the first type of MAC sub PDU contained in the MAC PDU; and the number of the first and second electrodes,

the third subheader carries the first indication information, and the first indication information is used for indicating whether the third type of MAC subPDU where the third subheader is located follows the first type of MAC subPDU.
The method of claim 2, wherein the MAC PDUs further comprise a sixth type of MAC sub-PDU comprising only a sixth subheader, the sixth subheader being located after the third type of MAC sub-PDU;

the third subheader carries the first indication information, and the first indication information is used for indicating whether the third type of MAC subPDU where the third subheader is located follows the first type of MAC subPDU or not; and the number of the first and second electrodes,

the sixth subheader carries the second indication information, where the second indication information is used to indicate the number of the first type of MAC sub-PDUs included in the MAC PDU.
The method according to claim 2, wherein the third subheader carries the second indication information, and the second indication information is used to indicate the number of first MAC sub-PDUs included in the MAC PDU.
The method according to claim 2, wherein the success RAR carries the first indication information and/or the second indication information,

the first indication information is used for indicating whether the first type of MAC sub PDU follows the third type of MAC sub PDU where the success RAR is located;

the second indication information is used for indicating the number of the first type of MAC sub-PDUs contained in the MAC PDU.
The method according to claim 2, wherein the first subheader carries the first indication information, and the first indication information is used to indicate that the first type of MAC sub-pdu where the first subheader is located is a MAC sub-pdu containing an RRC message.
The method according to claim 8, wherein the first indication information is type indication information, and the type indication information is used to indicate that the type of the first type of MAC sub-pdu in which the first subheader is located is a MAC sub-pdu containing an RRC message.
The method according to any of claims 2 to 9, wherein the first type of MAC sub-PDU is located after the third type of MAC sub-PDU in the MAC PDUs.
The method according to any of claims 1-10, wherein for the case where the MAC PDU comprises a plurality of MAC sub PDUs of a first type, the plurality of MAC sub PDUs of the first type comprise different RRC messages of the same terminal device.
The method according to any of claims 1-11, wherein the first message is msgB in a two-step random access procedure.
An information indication method, the method comprising:

the method comprises the steps that network equipment sends a first message, wherein the first message comprises an MAC PDU, and the MAC PDU carries first indication information and/or second indication information;

the first indication information is used for determining whether the MAC PDU contains a first type of MAC sub PDU, and the second indication information is used for determining the number of the first type of MAC sub PDU contained in the MAC PDU; the first type of MAC subpPDU is a MAC subpPDU containing RRC messages.
The method of claim 13, wherein the MAC PDU comprises at least one of:

a second type of MAC subPDU, wherein the second type of MAC subPDU only comprises a second subheader, and the second subheader comprises BI information;

a third type of MAC sub PDU, wherein the third type of MAC sub PDU comprises a third subheader and a success RAR;

the first type of MAC subPDU comprises a first subheader and SDU, wherein the SDU comprises RRC information;

a fourth type of MAC sub PDU, wherein the fourth type of MAC sub PDU comprises a fourth subheader and a fallback RAR;

a fifth type of MAC sub PDU that contains a fifth subheader and padding, or contains only the fifth subheader.
The method of claim 14, wherein,

the third subheader carries the first indication information, and the first indication information is used for indicating whether the third type of MAC subPDU where the third subheader is located follows the first type of MAC subPDU or not; and the number of the first and second electrodes,

the first subheader carries the first indication information, and the first indication information is used for indicating whether the first type of MAC subPDU is followed by the first type of MAC subPDU where the first subheader is located.
The method of claim 14, wherein,

the second type of MAC sub PDU carries the second indication information, and the second indication information is used for indicating the number of the first type of MAC sub PDU contained in the MAC PDU; and the number of the first and second electrodes,

the third subheader carries the first indication information, and the first indication information is used for indicating whether the third type of MAC subPDU where the third subheader is located follows the first type of MAC subPDU.
The method of claim 14, wherein the MAC PDUs further comprise a sixth type of MAC sub-PDU comprising only a sixth subheader, the sixth subheader being located after the third type of MAC sub-PDU;

the third subheader carries the first indication information, and the first indication information is used for indicating whether the third type of MAC subPDU where the third subheader is located follows the first type of MAC subPDU or not; and the number of the first and second electrodes,

the sixth subheader carries the second indication information, where the second indication information is used to indicate the number of the first type of MAC sub-PDUs included in the MAC PDU.
The method of claim 14, wherein the third subheader carries the second indication information, and the second indication information is used to indicate the number of first MAC sub-PDUs included in the MAC PDU.
The method of claim 14, wherein the success RAR carries the first indication information and/or the second indication information,

the first indication information is used for indicating whether the first type of MAC sub PDU follows the third type of MAC sub PDU where the success RAR is located;

the second indication information is used for indicating the number of the first type of MAC sub-PDUs contained in the MAC PDU.
The method according to claim 14, wherein the first subheader carries the first indication information, and the first indication information is used to indicate that the first type of MAC sub-pdu where the first subheader is located is a MAC sub-pdu containing an RRC message.
The method according to claim 20, wherein the first indication information is type indication information, and the type indication information is used to indicate that the type of the first type of MAC sub-pdu in which the first subheader is located is a MAC sub-pdu containing an RRC message.
The method according to any of claims 14 to 21, wherein the first type of MAC sub-PDU is located after the third type of MAC sub-PDU in the MAC PDUs.
The method according to any of claims 13-22, wherein for the case where the MAC PDU comprises a plurality of MAC sub PDUs of a first type, the plurality of MAC sub PDUs of the first type comprise different RRC messages of the same terminal device.
The method according to any of claims 13-23, wherein the first message is msgB in a two-step random access procedure.
An information indicating device, the device comprising:

a receiving unit, configured to receive a first message, where the first message includes a MAC PDU, and the MAC PDU carries first indication information and/or second indication information;

the first indication information is used for determining whether the MAC PDU contains a first type of MAC sub PDU, and the second indication information is used for determining the number of the first type of MAC sub PDU contained in the MAC PDU; the first type of MAC subpPDU is a MAC subpPDU containing RRC messages.
The apparatus of claim 25, wherein the MAC PDU comprises at least one of:

a second type of MAC subPDU, wherein the second type of MAC subPDU only comprises a second subheader, and the second subheader comprises BI information;

a third type of MAC sub PDU, wherein the third type of MAC sub PDU comprises a third subheader and a success RAR;

the first type of MAC subPDU comprises a first subheader and SDU, wherein the SDU comprises RRC information;

a fourth type of MAC sub PDU, wherein the fourth type of MAC sub PDU comprises a fourth subheader and a fallback RAR;

a fifth type of MAC sub PDU that contains a fifth subheader and padding, or contains only the fifth subheader.
The apparatus of claim 26,

the third subheader carries the first indication information, and the first indication information is used for indicating whether the third type of MAC subPDU where the third subheader is located follows the first type of MAC subPDU or not; and the number of the first and second electrodes,

the first subheader carries the first indication information, and the first indication information is used for indicating whether the first type of MAC subPDU is followed by the first type of MAC subPDU where the first subheader is located.
The apparatus of claim 26,

the second type of MAC sub PDU carries the second indication information, and the second indication information is used for indicating the number of the first type of MAC sub PDU contained in the MAC PDU; and the number of the first and second electrodes,

the third subheader carries the first indication information, and the first indication information is used for indicating whether the third type of MAC subPDU where the third subheader is located follows the first type of MAC subPDU.
The apparatus of claim 26, wherein the MAC PDUs further comprise a sixth type of MAC sub-PDU comprising only a sixth subheader, the sixth subheader being located after the third type of MAC sub-PDU;

the third subheader carries the first indication information, and the first indication information is used for indicating whether the third type of MAC subPDU where the third subheader is located follows the first type of MAC subPDU or not; and the number of the first and second electrodes,

the sixth subheader carries the second indication information, where the second indication information is used to indicate the number of the first type of MAC sub-PDUs included in the MAC PDU.
The apparatus of claim 26, wherein the third subheader carries the second indication information, and the second indication information is used to indicate the number of MAC sub-PDUs of the first type included in the MAC PDU.
The apparatus of claim 26, wherein the success RAR carries the first indication information and/or the second indication information,

the first indication information is used for indicating whether the first type of MAC sub PDU follows the third type of MAC sub PDU where the success RAR is located;

the second indication information is used for indicating the number of the first type of MAC sub-PDUs contained in the MAC PDU.
The apparatus according to claim 26, wherein the first subheader carries the first indication information, and the first indication information is used to indicate that the first MAC sub-pdu of the first type in which the first subheader is located is a MAC sub-pdu including an RRC message.
The apparatus according to claim 32, wherein the first indication information is type indication information, and the type indication information is used to indicate that the type of the first MAC sub-pdu in which the first subheader is located is a MAC sub-pdu containing an RRC message.
The apparatus according to any of claims 26-33, wherein the first type of MAC sub-PDU is located after the third type of MAC sub-PDU in the MAC PDUs.
The apparatus according to any of claims 25-34, wherein for the case where the MAC PDU comprises multiple MAC sub-PDUs of a first type, the multiple MAC sub-PDUs of the first type comprise different RRC messages of the same terminal device.
The apparatus according to any of claims 25-35, wherein the first message is msgB in a two-step random access procedure.
An information indicating device, the device comprising:

a sending unit, configured to send a first message, where the first message includes a MAC PDU, and the MAC PDU carries first indication information and/or second indication information;

the first indication information is used for determining whether the MAC PDU contains a first type of MAC sub PDU, and the second indication information is used for determining the number of the first type of MAC sub PDU contained in the MAC PDU; the first type of MAC subpPDU is a MAC subpPDU containing RRC messages.
The apparatus of claim 37, wherein the MAC PDU comprises at least one of:

a second type of MAC subPDU, wherein the second type of MAC subPDU only comprises a second subheader, and the second subheader comprises BI information;

a third type of MAC sub PDU, wherein the third type of MAC sub PDU comprises a third subheader and a success RAR;

the first type of MAC subPDU comprises a first subheader and SDU, wherein the SDU comprises RRC information;

a fourth type of MAC sub PDU, wherein the fourth type of MAC sub PDU comprises a fourth subheader and a fallback RAR;

a fifth type of MAC sub PDU that contains a fifth subheader and padding, or contains only the fifth subheader.
The apparatus of claim 38, wherein,

the third subheader carries the first indication information, and the first indication information is used for indicating whether the third type of MAC subPDU where the third subheader is located follows the first type of MAC subPDU or not; and the number of the first and second electrodes,

the first subheader carries the first indication information, and the first indication information is used for indicating whether the first type of MAC subPDU is followed by the first type of MAC subPDU where the first subheader is located.
The apparatus of claim 38, wherein,

the second type of MAC sub PDU carries the second indication information, and the second indication information is used for indicating the number of the first type of MAC sub PDU contained in the MAC PDU; and the number of the first and second electrodes,

the third subheader carries the first indication information, and the first indication information is used for indicating whether the third type of MAC subPDU where the third subheader is located follows the first type of MAC subPDU.
The apparatus of claim 38, wherein the MAC PDUs further comprise a sixth type of MAC sub-PDU comprising only a sixth subheader, the sixth subheader being located after the third type of MAC sub-PDU;

the third subheader carries the first indication information, and the first indication information is used for indicating whether the third type of MAC subPDU where the third subheader is located follows the first type of MAC subPDU or not; and the number of the first and second electrodes,

the sixth subheader carries the second indication information, where the second indication information is used to indicate the number of the first type of MAC sub-PDUs included in the MAC PDU.
The apparatus of claim 38, wherein the third subheader carries the second indication information, and the second indication information is used for indicating the number of MAC sub-PDUs of the first type included in the MAC PDU.
The apparatus of claim 38, wherein the success RAR carries the first indication information and/or the second indication information,

the first indication information is used for indicating whether the first type of MAC sub PDU follows the third type of MAC sub PDU where the success RAR is located;

the second indication information is used for indicating the number of the first type of MAC sub-PDUs contained in the MAC PDU.
The apparatus according to claim 38, wherein the first subheader carries the first indication information, and the first indication information is used to indicate that the first MAC sub-pdu of the first type in which the first subheader is located is a MAC sub-pdu including an RRC message.
The apparatus of claim 44, wherein the first indication information is type indication information, and the type indication information is used to indicate that the type of the first type of MAC sub-PDU in which the first subheader is located is a MAC sub-PDU containing an RRC message.
The apparatus according to any of claims 38-45, wherein the first type of MAC subpDU is located after the third type of MAC subpDU in the MAC PDUs.
The apparatus of any of claims 37-46, wherein for the case where the MAC PDU comprises multiple MAC subpPDUs of a first type, the multiple MAC subpPDUs of the first type comprise different RRC messages for a same terminal device.
The apparatus of any one of claims 37-47, wherein the first message is msgB in a two-step random access procedure.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 1 to 12.
A network device, comprising: a processor and a memory for storing a computer program, the processor being configured to invoke and execute the computer program stored in the memory to perform the method of any of claims 13 to 24.
A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1 to 12.
A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 13 to 24.
A computer-readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 12.
A computer-readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 13 to 24.
A computer program product comprising computer program instructions to cause a computer to perform the method of any one of claims 1 to 12.
A computer program product comprising computer program instructions to cause a computer to perform the method of any one of claims 13 to 24.
A computer program for causing a computer to perform the method of any one of claims 1 to 12.
A computer program for causing a computer to perform the method of any one of claims 13 to 24.