An MCCH scheduling transmission method, device, and terminal device

Abstract

An embodiment of the present application provides an MCCH scheduling transmission method and apparatus, and a terminal device, the method comprising: the terminal device determining a correspondence between a PDCCH opportunity and an SSB index, the PDCCH opportunity being used to transmit MCCH PDCCH; the terminal device receiving MCCH PDCCH based on the correspondence between the PDCCH opportunity and the SSB index.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of mobile communication technology, and specifically to a multicast control channel (MCCH) scheduling transmission method and apparatus, and terminal equipment. Background Art

[0002] In the New Radio (NR) system, broadcast-type MBS services are supported, and terminal devices can receive broadcast MBS services in the Radio Resource Control (RRC) idle state, RRC inactive state, or RRC connected state.

[0003] In the NR system, broadcast MBS services can be transmitted over the air interface using beam sweeping. The signaling for configuring MBS services is also sent to terminal devices via broadcast. This signaling is called MCCH signaling (i.e., signaling carried in the MCCH). MCCH signaling also uses beam sweeping transmission. It is important to understand how terminal devices correctly receive broadcast MCCH signaling. Summary of the Invention

[0004] The embodiments of the present application provide an MCCH scheduling transmission method and apparatus, and a terminal device.

[0005] The MCCH scheduling transmission method provided in the embodiment of the present application includes:

[0006] The terminal device determines a correspondence between a Physical Downlink Control Channel (PDCCH) opportunity and a synchronization signal block (SS / PBCH Block, SSB) index, wherein the PDCCH opportunity is used to transmit the MCCH PDCCH;

[0007] The terminal device receives MCCH PDCCH based on the correspondence between the PDCCH timing and the SSB index.

[0008] The MCCH scheduling transmission device provided in an embodiment of the present application is applied to a terminal device, and the device includes:

[0009] a determining unit, configured to determine a correspondence between a PDCCH opportunity and an SSB index, wherein the PDCCH opportunity is used to transmit an MCCH PDCCH;

[0010] The receiving unit is configured to receive the MCCH PDCCH based on the correspondence between the PDCCH opportunity and the SSB index.

[0011] The terminal device provided in the embodiment of the present application includes a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the above-mentioned MCCH scheduling transmission method.

[0012] The chip provided in the embodiment of the present application is used to implement the above-mentioned MCCH scheduling transmission method.

[0013] Specifically, the chip includes: a processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes the above-mentioned MCCH scheduling transmission method.

[0014] The computer-readable storage medium provided in an embodiment of the present application is used to store a computer program, which enables a computer to execute the above-mentioned MCCH scheduling transmission method.

[0015] The computer program product provided in the embodiments of the present application includes computer program instructions, which enable a computer to execute the above-mentioned MCCH scheduling transmission method.

[0016] The computer program provided in the embodiment of the present application, when executed on a computer, enables the computer to execute the above-mentioned MCCH scheduling transmission method.

[0017] Through the above technical solution, in the scenario where MCCH signaling is transmitted in a beam sweeping manner, the terminal device determines the correspondence between the PDCCH timing and the SSB index. Since the SSB index and the beam are associated, the terminal device can determine the correspondence between the PDCCH timing and the beam, and thus receive the MCCH PDCCH based on the correspondence, ensuring that the terminal device receives the MCCH PDCCH at the correct position (i.e., through the correct beam). Since the MCCH PDCCH carries the scheduling information of the MCCH signaling, it provides a guarantee for the subsequent correct reception of the MCCH signaling, and further provides a guarantee for the subsequent correct reception of the MTCH service data. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 is a schematic diagram of a communication system architecture provided in an embodiment of the present application;

[0020] Figure 2 A schematic diagram of beam sweeping provided in an embodiment of the present application;

[0021] Figure 3 A schematic diagram of the SSB provided in an embodiment of the present application;

[0022] Figure 4 A schematic diagram of an SSB burst set cycle provided in an embodiment of the present application;

[0023] Figure 5 Schematic diagram of the process of MCCH scheduling transmission method provided in an embodiment of the present application;

[0024] Figure 6 This is a schematic diagram of the corresponding relationship between the PDCCH index and the SSB index provided in the embodiment of the present application. Figure 1 ;

[0025] Figure 7 This is a schematic diagram of the corresponding relationship between the PDCCH index and the SSB index provided in the embodiment of the present application. Figure 2 ;

[0026] Figure 8 This is a schematic diagram of the corresponding relationship between the PDCCH index and the SSB index provided in the embodiment of the present application. Figure 3 ;

[0027] Figure 9 This is a schematic diagram of the corresponding relationship between the PDCCH index and the SSB index provided in the embodiment of the present application. Figure 4 ;

[0028] Figure 10 This is a schematic diagram of the corresponding relationship between the PDCCH index and the SSB index provided in the embodiment of the present application. Figure 5 ;

[0029] Figure 11 This is a schematic diagram of the structure of the MCCH scheduling transmission device provided in an embodiment of the present application;

[0030] Figure 12 This is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0031] Figure 13 is a schematic structural diagram of a chip according to an embodiment of the present application;

[0032] Figure 14 It is a schematic block diagram of a communication system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] The following will describe the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0034] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, 5G communication system or future communication system, etc.

[0035] For example, the communication system 100 used in the embodiment of the present application is as follows: Figure 1 As shown. The communication system 100 may include a network device 110, which may be a device that communicates with a terminal 120 (or referred to as a communication terminal, terminal). The network device 110 may provide communication coverage for a specific geographical area and may communicate with terminals located within the coverage area. Optionally, the network device 110 may be an evolved base station (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, an in-vehicle 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, etc.

[0036] The communication system 100 also includes 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, a connection via a wired line, 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, such as for 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 another terminal configured to receive / send communication signals; and / or an Internet of Things (IoT) device. A terminal configured to communicate via 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 System (PCS) terminals that may combine cellular radiotelephones with data processing, fax, and data communications capabilities; PDAs that may include radiotelephones, pagers, Internet / Intranet access, web browsers, organizers, calendars, and / or Global Positioning System (GPS) receivers; and conventional laptop and / or palmtop receivers or other electronic devices that include radiotelephone transceivers. A terminal may be referred to as an access terminal, user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user device. The access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal in a 5G network, or a terminal in a future evolved PLMN, etc.

[0037] Optionally, the terminals 120 may perform device-to-device (D2D) communication with each other.

[0038] Optionally, the 5G communication system or 5G network may also be referred to as a New Radio (NR) system or NR network.

[0039] Figure 1 One network device and two terminals are shown as an example. Optionally, the communication system 100 may include multiple network devices and each network device may include another number of terminals within its coverage area. This embodiment of the present application does not limit this.

[0040] Optionally, the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiment of the present application.

[0041] It should be understood that the device with communication function in the network / system in the embodiment of the present application can be called a communication device. Figure 1 Taking the communication system 100 shown as an example, the communication equipment may include a network device 110 and a terminal 120 with communication functions. The network device 110 and the terminal 120 may be the specific devices described above and will not be repeated here; the communication equipment may also include other devices in the communication system 100, such as a network controller, a mobile management entity and other network entities, which is not limited in the embodiments of the present application.

[0042] It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and / or" is simply a description of an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " generally indicates that the related objects are in an "or" relationship.

[0043] 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.

[0044] With the pursuit of speed, latency, high-speed mobility, energy efficiency and the diversity and complexity of services in future life, the 3GPP (3 rd The 3GPP (3rd Generation Partnership Project) international standards organization has begun developing 5G. The main application scenarios of 5G are: enhanced mobile broadband (eMBB), ultra-reliable low-latency communications (URLLC), and massive machine-type communications (mMTC).

[0045] On the one hand, eMBB still aims to provide users with multimedia content, services, and data, and demand for this is growing rapidly. On the other hand, since eMBB may be deployed in different scenarios, such as indoors, in urban areas, and in rural areas, its capabilities and requirements vary significantly. Therefore, it cannot be generalized and requires detailed analysis based on specific deployment scenarios. Typical applications of URLLC include industrial automation, power automation, remote medical operations (surgery), and traffic safety. Typical characteristics of mMTC include high connection density, small data volumes, latency-insensitive services, low module costs, and long service life.

[0046] In the early days of NR deployment, achieving complete NR coverage was difficult, resulting in a typical network coverage model consisting of wide-area LTE coverage and isolated NR coverage. Furthermore, a large number of LTE deployments operate below 6 GHz, leaving limited spectrum available for 5G. Therefore, NR must explore spectrum applications above 6 GHz, despite the limited coverage and rapid signal fading in higher frequency bands. Furthermore, to protect mobile operators' initial investments in LTE, a tight interworking mode between LTE and NR was proposed.

[0047] RRC status

[0048] In order to reduce air interface signaling and quickly restore wireless connections and data services, 5G defines a new Radio Resource Control (RRC) state, namely the RRC inactive (RRC_INACTIVE) state. This state is different from the RRC idle (RRC_IDLE) state and the RRC active (RRC_ACTIVE) state.

[0049] 1) RRC_IDLE state (abbreviated as idle state): Mobility is based on UE cell selection and reselection, paging is initiated by the Core Network (CN), and the paging area is configured by the CN. There is no UE context on the base station side and no RRC connection exists.

[0050] 2) RRC_CONNECTED state (also called connected state): An RRC connection exists, and a UE context exists on both the base station and the UE. The network knows the UE's location at the cell level. Mobility is controlled by the network. Unicast data can be transmitted between the UE and the base station.

[0051] 3) RRC_INACTIVE state (abbreviated as inactive state): Mobility is based on UE cell selection and reselection, there is a connection between CN and NR, the UE context exists on a certain base station, paging is triggered by RAN, and the RAN-based paging area is managed by RAN. The network side knows the UE location based on the RAN paging area level.

[0052] beam sweeping

[0053] NR will be deployed at high frequencies in the future. To improve coverage, 5G will introduce a beam sweeping mechanism to meet coverage requirements (trading space for coverage and time for space). Figure 2 After the introduction of beam sweeping, synchronization signals need to be sent in each beam direction. The 5G synchronization signal is given in the form of SSB, including the primary synchronization signal (PSS), the secondary synchronization signal (SSS), and the physical broadcast channel (PBCH). Figure 3 As shown in the figure, the 5G synchronization signal appears periodically in the time domain in the form of a synchronization signal burst set (SS burst set). Figure 4 shown.

[0054] Multimedia Broadcast Multicast Service (MBMS)

[0055] MBMS is a technology that transmits data from one data source to multiple terminal devices by sharing network resources. While providing multimedia services, it can effectively utilize network resources and achieve broadcast and multicast of multimedia services at a higher rate (such as 256kbps).

[0056] Because MBMS spectrum efficiency is low and insufficient to effectively carry and support mobile TV services, 3GPP has explicitly proposed enhancing support for downlink high-speed MBMS services in LTE and has defined design requirements for the physical layer and air interface.

[0057] 3GPP Release 9 introduced evolved MBMS (eMBMS) into LTE. eMBMS introduced the concept of a single frequency network (SFN), namely, Multimedia Broadcast Multicast Service Single Frequency Network (MBSFN). MBSFN uses a unified frequency to transmit service data simultaneously across all cells, while ensuring inter-cell synchronization. This approach significantly improves the overall signal-to-noise ratio distribution of the cell, and consequently, significantly increases spectrum efficiency. eMBMS implements service broadcast and multicast based on the IP multicast protocol.

[0058] In LTE or LTE-Advanced (LTE-A), MBMS only has a broadcast bearer mode, not a multicast bearer mode. In addition, the reception of MBMS services is applicable to terminal devices in an idle state or a connected state.

[0059] 3GPP R13 introduced the Single Cell Point To Multipoint (SC-PTM) concept, which is based on the MBMS network architecture.

[0060] MBMS introduces new logical channels, including the Single Cell-Multicast Control Channel (SC-MCCH) and the Single Cell-Multicast Transport Channel (SC-MTCH). SC-MCCH and SC-MTCH are mapped to the Downlink Shared Channel (DL-SCH). Furthermore, DL-SCH is mapped to the Physical Downlink Shared Channel (PDSCH). SC-MCCH and SC-MTCH are logical channels, DL-SCH is a transport channel, and PDSCH is a physical channel. SC-MCCH and SC-MTCH do not support Hybrid Automatic Repeat reQuest (HARQ) operations.

[0061] MBMS introduces a new System Information Block (SIB) type, namely SIB20. Specifically, the configuration information of SC-MCCH is transmitted through SIB20, and there is only one SC-MCCH in a cell. The configuration information of SC-MCCH includes: the modification period of SC-MCCH, the repetition period of SC-MCCH, and the radio frame and subframe for scheduling SC-MCCH. Furthermore, 1) the boundary of the modification period of SC-MCCH satisfies SFN mod m=0, where SFN represents the system frame number of the boundary, and m is the modification period of SC-MCCH configured in SIB20 (i.e., sc-mcch-ModificationPeriod). 2) The radio frame for scheduling SC-MCCH satisfies: SFN mod mcch-RepetitionPeriod=mcch-Offset, where SFN represents the system frame number of the radio frame, mcch-RepetitionPeriod represents the repetition period of SC-MCCH, and mcch-Offset represents the offset of SC-MCCH. 3) The subframe for scheduling SC-MCCH is indicated by sc-mcch-Subframe.

[0062] SC-MCCH is scheduled through the Physical Downlink Control Channel (PDCCH). On the one hand, a new Radio Network Temporary Identity (RNTI), namely the Single Cell RNTI (SC-RNTI), is introduced to identify the PDCCH (such as SC-MCCHPDCCH) used to schedule SC-MCCH. Optionally, the SC-RNTI is fixed to FFFC. On the other hand, a new RNTI, namely the Single Cell Notification RNTI (SC-N-RNTI), is introduced to identify the PDCCH (such as the notification PDCCH) used to indicate the change notification of SC-MCCH. Optionally, the SC-N-RNTI is fixed to FFFB; further, one of the 8 bits of DCI 1C can be used to indicate the change notification. In LTE, the configuration information of SC-PTM is based on the SC-MCCH configured by SIB20, and then the SC-MCCH configures the SC-MTCH, which is used to transmit service data.

[0063] Specifically, SC-MCCH only transmits one message (i.e., SCPTMConfiguration), which is used to configure the configuration information of SC-PTM. The configuration information of SC-PTM includes: Temporary Mobile Group Identity (TMGI), session ID, Group RNTI (G-RNTI), Discontinuous Reception (DRX) configuration information, and SC-PTM service information of neighboring cells. It should be noted that SC-PTM in R13 does not support the Robust Header Compression (ROHC) function.

[0064] The downlink discontinuous reception of SC-PTM is controlled by the following parameters: onDurationTimerSCPTM, drx-InactivityTimerSCPTM, SC-MTCH-SchedulingCycle, and SC-MTCH-SchedulingOffset.

[0065] When [(SFN*10)+subframe number]modulo(SC-MTCH-SchedulingCycle)=SC-MTCH-SchedulingOffset is satisfied, the timer onDurationTimerSCPTM is started;

[0066] When receiving downlink PDCCH scheduling, start the timer drx-InactivityTimerSCPTM;

[0067] Downlink SC-PTM services are received only when the timer onDurationTimerSCPTM or drx-InactivityTimerSCPTM is running.

[0068] SC-PTM service continuity uses the MBMS service continuity concept based on SIB15, namely the "SIB15 + MBMS Interest Indication" approach. Service continuity for idle terminal devices is based on the concept of frequency priority.

[0069] As described above, SC-PTM is configured based on SIB20 to configure SC-MCCH, and then configure SC-MTCH based on SC-MCCH. A cell has only one SC-MCCH, which means that after the terminal device reselects the cell, it needs to reacquire the SC-MCCH, which will cause service interruption.

[0070] In NR systems, many scenarios require support for multicast and broadcast services, such as the Internet of Vehicles and the Industrial Internet. Therefore, it is necessary to introduce MBMS in NR.

[0071] It should be noted that the MBMS services in the above solution include but are not limited to multicast services, groupcast services, MBS services, etc. The embodiment of the present application takes the MBS service as an example for explanation, and the description of "MBS service" can also be replaced by "multicast service" or "groupcast service" or "broadcast service" or "MBMS service".

[0072] In the NR system, broadcast-type MBS services are supported. Terminal devices can receive broadcast MBS services in RRC idle state, RRC inactive state, or RRC connected state.

[0073] In the NR system, the broadcast MBS service can be transmitted on the air interface using beam sweeping. The signaling for configuring the MBS service is also sent to the terminal device via broadcast. This signaling is called MCCH signaling (i.e., signaling carried in the MCCH). The MCCH signaling is also propagated in the beam sweeping manner. It is necessary to clarify how the terminal device correctly receives the broadcast MCCH signaling. To this end, the following technical solutions are proposed in the embodiments of the present application.

[0074] In an embodiment of the present application, MCCH signaling can also be called the first signaling. MCCH signaling is carried in MCCH. MCCH signaling is transmitted in a beam sweeping manner, that is, MCCH PDSCH is transmitted in a beam sweeping manner. Correspondingly, MCCH PDCCH is transmitted in a beam sweeping manner. For this purpose, it is necessary to associate the association relationship (that is, the corresponding relationship) between MCCH PDCCH and SSB index (SSBindex) so that the terminal device can correctly receive the broadcast MCCH PDCCH, thereby correctly receiving the broadcast MCCH signaling.

[0075] In the technical solution of the embodiment of the present application, a new SIB (called the first SIB) is defined. The first SIB includes the configuration information of the first MCCH. Here, the first MCCH is the control channel of the MBS service. In other words, the first SIB is used to configure the configuration information of the control channel of NRMBS. Optionally, the control channel of NR MBS can also be called NR MCCH (that is, the first MCCH).

[0076] Furthermore, the first MCCH is used to carry the first signaling. The embodiment of the present application does not limit the name of the first signaling. For example, the first signaling is signaling A. The first signaling includes configuration information of at least one first MTCH. Here, the first MTCH is a service channel (also called a data channel or a transmission channel) of the MBS service. The first MTCH is used to transmit MBS service data (such as NRMBS service data). In other words, the first MCCH is used to configure the configuration information of the service channel of the NR MBS. Optionally, the service channel of the NRMBS may also be called the NR MTCH (i.e., the first MTCH).

[0077] Specifically, the first signaling is used to configure a service channel for the NR MBS, service information corresponding to the service channel, and scheduling information corresponding to the service channel. Furthermore, optionally, the service information corresponding to the service channel includes identification information for the service, such as a TMGI or session ID. The scheduling information corresponding to the service channel includes the RNTI used when scheduling MBS service data corresponding to the service channel, such as a G-RNTI or DRX configuration information.

[0078] It should be noted that the transmission of the first MCCH and the first MTCH are both based on PDCCH scheduling. The RNTI used by the PDCCH for scheduling the first MCCH uses a network-wide unique identifier, that is, a fixed value. The RNTI used by the PDCCH for scheduling the first MTCH is configured through the first MCCH.

[0079] It should be noted that the embodiments of the present application do not limit the naming of the first SIB, the first MCCH, and the first MTCH. For ease of description, the first SIB may also be referred to as SIB, the first MCCH may also be referred to as MCCH, and the first MTCH may also be referred to as MTCH. The PDCCH for scheduling MCCH (i.e., MCCHPDCCH) and the notification PDCCH are configured through the SIB, wherein the DCI carried by the MCCH PDCCH is used to schedule the PDSCH for transmitting MCCH (i.e., MCCH PDSCH). Furthermore, M PDCCHs for scheduling MTCHs (i.e., MTCH 1PDCCH, MTCH2PDCCH, ..., MTCH MPDCCH) are configured through the MCCH, wherein the DCI carried by the MTCH n PDCCH is used to schedule the PDSCH for transmitting MTCH n (i.e., MTCH n PDSCH), and n is an integer greater than or equal to 1 and less than or equal to M. MCCH and MTCH are mapped to DL-SCH, and further, DL-SCH is mapped to PDSCH, wherein MCCH and MTCH belong to logical channels, DL-SCH belongs to a transport channel, and PDSCH belongs to a physical channel.

[0080] Figure 5 This is a flow chart of the MCCH scheduling transmission method provided in an embodiment of the present application. Figure 5 As shown, the MCCH scheduling transmission method includes the following steps:

[0081] Step 501: The terminal device determines the correspondence between the PDCCH opportunity and the SSB index, and the PDCCH opportunity is used to transmit the MCCH PDCCH.

[0082] Step 502: The terminal device receives MCCHPDCCH based on the correspondence between the PDCCH timing and the SSB index.

[0083] In the embodiment of the present application, the PDCCH opportunity is used to transmit the MCCH PDCCH, and the DCI carried by the MCCH PDCCH is scheduled to transmit the PDSCH of the MCCH (i.e., MCCH PDSCH). Here, the MCCH PDCCH, MCCH PDSCH, and MCCH signaling (i.e., the first signaling carried in the MCCH) can refer to the above-mentioned related description. Among them, the MCCH PDCCH and MCCH PDCCH are transmitted using a beamsweeping method, and further, they are transmitted using a broadcast method.

[0084] It should be noted that the PDCCH occasion in the embodiment of the present application may also be referred to as a PDCCH monitor occasion.

[0085] In an embodiment of the present application, before determining the correspondence between the PDCCH opportunity and the SSB, it is necessary to determine how the PDCCH opportunity is numbered (i.e., it is necessary to determine the index of the PDCCH opportunity). To this end, the terminal device obtains first configuration information, and the first configuration information is used to determine the MCCH period; wherein, within the MCCH period, the PDCCH opportunity corresponding to the MCCH PDCCH is numbered starting from 0.

[0086] Here, the first configuration information is carried in a system broadcast message (such as SIB).

[0087] It should be noted that there is only one MCCH PDCCH in the MCCH cycle. Optionally, in the case where the MCCH PDCCH has H repetition transmissions, there are H repetition transmissions for one MCCH PDCCH in the MCCH cycle.

[0088] It should be noted that the description of the “MCCH period” in the embodiments of the present application may also be referred to as the “MCCH transmission period” or the “MCCH repetition period”.

[0089] The following describes the numbering method of PDCCH opportunities.

[0090] In an embodiment of the present application, the first configuration information includes at least one of the following: first indication information, the first indication information is used to determine the length of the MCCH cycle; second indication information, the second indication information is used to determine the starting position of the MCCH cycle.

[0091] In an optional manner, the first indication information is used to indicate T, where T is a positive integer greater than or equal to 1; the second indication information is used to indicate an offset value (offset); based on this, the length of the MCCH cycle is T radio frames; at least one of the radio frame, subframe, time slot and symbol where the starting position of the MCCH cycle is located is determined based on the offset.

[0092] Here, the network device can configure the configuration information of the MCCH cycle, and the configuration information of the MCCH cycle includes first indication information and second indication information. The first indication information is used to indicate that the length of the MCCH cycle is T, and the second indication information is used to indicate the offset of the MCCH cycle. The starting position of the MCCH cycle can be determined by the offset.

[0093] It should be noted that the MCCH cycle can also be called the MCCH signaling transmission cycle. Because MCCH signaling is periodically transmitted, one MCCH signaling is transmitted in one MCCH cycle, and one MCCH PDCCH is also transmitted in one MCCH cycle. In the case of repeated transmission, H repeated transmissions of one MCCH signaling are sent in one MCCH cycle, and H repeated transmissions of one MCCH PDCCH are also sent in one MCCH cycle.

[0094] In the embodiment of the present application, the granularity for determining the starting position of the MCCH period may be a radio frame granularity (ie, SFN granularity), or a subframe granularity, or a time slot granularity, or a symbol granularity, etc.

[0095] In one example, taking SFN granularity as an example, the radio frame where the starting position of the MCCH period is located satisfies the following formula:

[0096] SFN mod T = offset;

[0097] SFN represents the number of the radio frame where the starting position of the MCCH period is located, and mod represents the modulo operation.

[0098] In one example, taking a subframe as an example, the radio frame and subframe where the starting position of the MCCH period is located satisfy the following formula:

[0099] SFN mod T=floor(offset / 10);

[0100] subframe = offset mod 10;

[0101] Among them, SFN represents the number of the radio frame where the starting position of the MCCH period is located, subframe represents the number of the subframe where the starting position of the MCCH period is located, mod represents the remainder operation, and floor represents the rounding-down operation.

[0102] Further, optionally, the first configuration information in the above scheme also includes third indication information, and the third indication information is used to indicate the first PDCCH opportunity index; or, the first configuration information does not include the third indication information, and the first PDCCH opportunity index defaults to 0; wherein, the first PDCCH opportunity index is used to indicate the first PDCCH opportunity corresponding to the MCCH PDCCH within the MCCH period and / or the PDCCH opportunity corresponding to the first actually transmitted SSB within the MCCH period.

[0103] Further, optionally, the first configuration information in the above scheme also includes fourth indication information, and the fourth indication information is used to indicate the number of repeated transmissions of the MCCH PDCCH; or, the first configuration information does not include the fourth indication information, and the number of repeated transmissions of the MCCH PDCCH defaults to 1.

[0104] Further, optionally, the first configuration information in the above scheme also includes fifth indication information, and the fifth indication information is used to indicate the search space corresponding to MCCH PDCCH; or, the first configuration information does not include the fifth indication information, and the search space corresponding to MCCH PDCCH defaults to at least one of the following: other system information (Other System Information, OSI) search space, remaining minimum system information (Remaining Minimum System Information, RMSI) search space, paging search space, random access response (Random Access Response, RAR) search space.

[0105] In one example, the first configuration information in the above solution includes at least one of the following:

[0106] mcch-RepetitionPeriod (i.e., first indication information), used to determine the MCCH period;

[0107] mcch-Offset (ie, the second indication information) is used to determine the starting position of the MCCH period.

[0108] firstPDCCHOccasion (i.e., the third indication information), is used to determine the index of the first PDCCH opportunity; this information is optional. If not configured, the index of the first PDCCH opportunity defaults to 0; it should be noted that the index of the first PDCCH opportunity is also the index of the PDCCH opportunity corresponding to the first SSB actually transmitted;

[0109] Repnumber (i.e., the fourth indication information) is used to determine the number of MCCH PDCCH transmissions within an MCCH period (i.e., the number of MCCH PDCCH repetitions). This information is optional. If not configured, the number of MCCH PDCCH repetitions defaults to 1. It should be noted that the number of MCCH PDCCH repetitions can also be understood as the number of MCCH PDSCH repetitions or the number of MCCH signaling repetitions.

[0110] Mcch-Searchspace (ie, the fifth indication information) is used to determine the search space of MCCH PDCCH; the information is optional. If not configured, the search space of MCCH PDCCH defaults to OSI search space, RMSI search space, paging search space, or RAR search space.

[0111] In the embodiment of the present application, after the PDCCH opportunities within the MCCH period are numbered using the above scheme, the index of the first PDCCH opportunity within the MCCH period is 0, the index of the second PDCCH opportunity is 1, and so on. Based on the index of each PDCCH opportunity within the MCCH period, the correspondence between the PDCCH opportunity and the SSB index can be determined by any of the following methods.

[0112] Method 1

[0113] In a scenario where the third indication information (i.e., firstPDCCHOccasion) is not configured in the first configuration information and the MCCH PDCCH is not repeatedly transmitted, for an MCCH PDCCH in the MCCH period, the index of the PDCCH opportunity corresponding to the kth actually transmitted SSB is:

[0114] k-1;

[0115] Wherein, k is a positive integer greater than or equal to 1 and less than or equal to S; S is the number of SSBs actually transmitted.

[0116] It should be noted that the number of SSBs actually transmitted is S, where each SSB actually transmitted has a corresponding SSB index. For example, if S=4, the number of SSBs actually transmitted is 4, the index of the first SSB actually transmitted is 1, the index of the second SSB actually transmitted is 2, the index of the third SSB actually transmitted is 3, and the index of the fourth SSB actually transmitted is 4.

[0117] In one example, referring to Figure 6 , the third indication information is not configured in the first configuration information, the index of the first PDCCH opportunity corresponding to the MCCH PDCCH in the MCCH period defaults to 0, the number of SSBs actually transmitted S is 4, for an MCCH PDCCH in the MCCH period, the index of the PDCCH opportunity corresponding to the second actually transmitted SSB is: k-1=2-1=1.

[0118] Method 2

[0119] In a scenario where the third indication information (i.e., firstPDCCH0ccasion) is configured in the first configuration information and there is no repeated transmission, for an MCCH PDCCH in the MCCH period, the index of the PDCCH opportunity corresponding to the kth actually transmitted SSB is:

[0120] First PDCCH opportunity index + (k-1);

[0121] Wherein, k is a positive integer greater than or equal to 1 and less than or equal to S; S is the number of SSBs actually transmitted.

[0122] It should be noted that the number of SSBs actually transmitted is S, where each SSB actually transmitted has a corresponding SSB index. For example, if S=4, the number of SSBs actually transmitted is 4, the index of the first SSB actually transmitted is 1, the index of the second SSB actually transmitted is 2, the index of the third SSB actually transmitted is 3, and the index of the fourth SSB actually transmitted is 4.

[0123] In one example, referring to Figure 7, the first configuration information is configured with third indication information, and the third indication information is used to indicate that the first PDCCH opportunity index is 1, that is, the index configuration of the first PDCCH opportunity corresponding to the MCCH PDCCH in the MCCH period is 1, and the number S of SSBs actually transmitted is 4. For an MCCH PDCCH in the MCCH period, the index of the PDCCH opportunity corresponding to the third SSB actually transmitted is:

[0124] First PDCCH opportunity index+(k-1)=1+(3-1)=3.

[0125] Method 3

[0126] The above-mentioned method 1 and method 2 are for the case where MCCH PDCCH is not repeatedly transmitted. In an optional method, the MCCH PDCCH has H repeated transmissions, where H is a positive integer; here, the value of H is configured by the network device, for example, through the above-mentioned first configuration information; or, the value of H defaults to 1.

[0127] It should be noted that the MCCH PDCCH having H repetition transmissions means that the total number of MCCH PDCCH transmissions is H. For example, H=2 means that the MCCH PDCCH has 2 repetition transmissions, the first repetition transmission is an initial transmission, and the second repetition transmission is a retransmission.

[0128] The third indication information (i.e., firstPDCCH Occasion) is not configured in the first configuration information, and in a scenario with repeated transmission, for the h-th repeated transmission of an MCCH PDCCH in the MCCH period, the index of the PDCCH opportunity corresponding to the k-th actually transmitted SSB is:

[0129] S*(h-1)+(k-1);

[0130] Wherein, k is a positive integer greater than or equal to 1 and less than or equal to S; S is the number of SSBs actually transmitted; h is a positive integer greater than or equal to 1 and less than or equal to H; H is the number of repeated transmissions of the MCCH PDCCH.

[0131] It should be noted that the number of SSBs actually transmitted is S, where each SSB actually transmitted has a corresponding SSB index. For example, if S=4, the number of SSBs actually transmitted is 4, the index of the first SSB actually transmitted is 1, the index of the second SSB actually transmitted is 2, the index of the third SSB actually transmitted is 3, and the index of the fourth SSB actually transmitted is 4.

[0132] In one example, referring to Figure 8, the third indication information is not configured in the first configuration information, and the index of the first PDCCH opportunity corresponding to the MCCH PDCCH in the MCCH period defaults to 0. The value of the number of SSBs actually transmitted S is 4. H=2, MCCH PDCCH has 2 repeated transmissions. For the first repeated transmission of an MCCH PDCCH in the MCCH period, the index of the PDCCH opportunity corresponding to the second actually transmitted SSB is: S*(h-1)+(k-1)=4*(1-1)+(2-1)=1. For the second repeated transmission of an MCCH PDCCH in the MCCH period, the index of the PDCCH opportunity corresponding to the third actually transmitted SSB is: S*(h-1)+(k-1)=4*(2-1)+(3-1)=6.

[0133] Method 4

[0134] The above-mentioned method 1 and method 2 are for the case where MCCH PDCCH is not repeatedly transmitted. In an optional method, the MCCH PDCCH has H repeated transmissions, where H is a positive integer; here, the value of H is configured by the network device, for example, through the above-mentioned first configuration information; or, the value of H defaults to 1.

[0135] It should be noted that the MCCH PDCCH having H repetition transmissions means that the total number of MCCH PDCCH transmissions is H. For example, H=2 means that the MCCH PDCCH has 2 repetition transmissions, the first repetition transmission is an initial transmission, and the second repetition transmission is a retransmission.

[0136] The third indication information (i.e., firstPDCCHOccasion) is configured in the first configuration information, and in a scenario with repeated transmission, for the hth repeated transmission of an MCCH PDCCH in the MCCH period, the index of the PDCCH opportunity corresponding to the kth actually transmitted SSB is:

[0137] First PDCCH opportunity index + S*(h-1)+(k-1);

[0138] Wherein, k is a positive integer greater than or equal to 1 and less than or equal to S; S is the number of SSBs actually transmitted; h is a positive integer greater than or equal to 1 and less than or equal to H; H is the number of repeated transmissions of the MCCH PDCCH.

[0139] It should be noted that the number of SSBs actually transmitted is S, where each SSB actually transmitted has a corresponding SSB index. For example, if S=4, the number of SSBs actually transmitted is 4, the index of the first SSB actually transmitted is 1, the index of the second SSB actually transmitted is 2, the index of the third SSB actually transmitted is 3, and the index of the fourth SSB actually transmitted is 4.

[0140] In one example, referring to Figure 9 , the first configuration information is configured with third indication information, and the third indication information is used to indicate that the first PDCCH opportunity index is 1. The value of the number of SSBs actually transmitted S is 4. H=2, and MCCH PDCCH has 2 repeated transmissions. For the first repeated transmission of an MCCH PDCCH within the MCCH period, the index of the PDCCH opportunity corresponding to the second actually transmitted SSB is: first PDCCH opportunity index + S*(h-1)+(k-1)=1+4*(1-1)+(2-1)=2. For the second repeated transmission of an MCCH PDCCH within the MCCH period, the index of the PDCCH opportunity corresponding to the third actually transmitted SSB is: first PDCCH opportunity index + S*(h-1)+(k-1)=1+4*(2-1)+(3-1)=7.

[0141] Method 5

[0142] The above-mentioned method 1 and method 2 are for the case where MCCH PDCCH is not repeatedly transmitted. In an optional method, the MCCH PDCCH has H repeated transmissions, where H is a positive integer; here, the value of H is configured by the network device, for example, through the above-mentioned first configuration information; or, the value of H defaults to 1.

[0143] It should be noted that the MCCH PDCCH having H repetition transmissions means that the total number of MCCH PDCCH transmissions is H. For example, H=2 means that the MCCH PDCCH has 2 repetition transmissions, the first repetition transmission is an initial transmission, and the second repetition transmission is a retransmission.

[0144] The third indication information (i.e., firstPDCCHOccasion) is configured in the first configuration information, and in a scenario with repeated transmission, and each repeated transmission is configured with the index of the corresponding first PDCCH opportunity, then for the h-th repeated transmission of an MCCH PDCCH in the MCCH period, the index of the PDCCH opportunity corresponding to the k-th actually transmitted SSB is:

[0145] The index of the first PDCCH opportunity corresponding to the hth repetition transmission of the MCCH PDCCH + (k-1);

[0146] Wherein, k is a positive integer greater than or equal to 1 and less than or equal to S; S is the number of SSBs actually transmitted; h is a positive integer greater than or equal to 1 and less than or equal to H; H is the number of repeated transmissions of the MCCH PDCCH.

[0147] In the above solution, the index of the first PDCCH opportunity corresponding to the h-th repeated transmission of the MCCH PDCCH is configured through the first configuration information.

[0148] It should be noted that the number of SSBs actually transmitted is S, where each SSB actually transmitted has a corresponding SSB index. For example, if S=4, the number of SSBs actually transmitted is 4, the index of the first SSB actually transmitted is 1, the index of the second SSB actually transmitted is 2, the index of the third SSB actually transmitted is 3, and the index of the fourth SSB actually transmitted is 4.

[0149] In one example, referring to Figure 10 , the first configuration information is configured with third indication information, and the third indication information is used to indicate that the first PDCCH opportunity index is 1. Here, the first PDCCH opportunity index is the index of the first PDCCH opportunity corresponding to the first repeated transmission of the MCCH PDCCH. In addition, the first configuration information also configures the index of the first PDCCH opportunity corresponding to each repeated transmission. For example: the index of the first PDCCH opportunity corresponding to the second repeated transmission is 6. The number of SSBs actually transmitted S is 4. H=2, MCCH PDCCH has 2 repeated transmissions. For the first repeated transmission of an MCCHPDCCH within the MCCH period, the index of the PDCCH opportunity corresponding to the second actually transmitted SSB is: the index of the first PDCCH opportunity corresponding to the hth repeated transmission of the MCCH PDCCH + (k-1) = 1 + (2-1) = 2. For the second repetition transmission of an MCCH PDCCH within the MCCH period, the index of the PDCCH opportunity corresponding to the third actually transmitted SSB is: the index of the first PDCCH opportunity corresponding to the hth repetition transmission of the MCCH PDCCH + (k-1) = 6 + (3-1) = 8.

[0150] In an embodiment of the present application, after determining the correspondence between the index of the PDCCH opportunity and the index of the SSB through the above scheme, the terminal device can monitor the PDCCH opportunity at the corresponding position (for example, the corresponding beam) according to the SSB index, thereby effectively receiving the MCCH PDCCH.

[0151] Figure 11 : is a schematic diagram of the structure of the MCCH scheduling transmission device provided in an embodiment of the present application, such as Figure 11 As shown, applied to a terminal device, the MCCH scheduling transmission device includes:

[0152] A determining unit 1101 is configured to determine a correspondence between a PDCCH opportunity and an SSB index, wherein the PDCCH opportunity is used to transmit an MCCH PDCCH;

[0153] The receiving unit 1102 is configured to receive the MCCH PDCCH based on the correspondence between the PDCCH timing and the SSB index.

[0154] In an optional manner, the device further includes:

[0155] an acquiring unit (not shown in the figure), configured to acquire first configuration information, where the first configuration information is used to determine the MCCH period;

[0156] Wherein, within the MCCH period, the PDCCH opportunities corresponding to the MCCH PDCCH are numbered starting from 0.

[0157] In an optional manner, the first configuration information includes at least one of the following:

[0158] First indication information, where the first indication information is used to determine the length of the MCCH cycle;

[0159] Second indication information, where the second indication information is used to determine the starting position of the MCCH period.

[0160] In an optional manner, the first indication information is used to indicate T, where T is a positive integer greater than or equal to 1; the second indication information is used to indicate an offset;

[0161] The length of the MCCH cycle is T radio frames;

[0162] At least one of the radio frame, subframe, time slot and symbol where the starting position of the MCCH period is located is determined based on the offset.

[0163] In an optional manner, the radio frame where the starting position of the MCCH period is located satisfies the following formula:

[0164] SFN mod T = offset;

[0165] SFN represents the number of the radio frame where the starting position of the MCCH period is located, and mod represents the modulo operation.

[0166] In an optional manner, the radio frame and subframe where the starting position of the MCCH period is located satisfy the following formula:

[0167] SFN mod T=floor(offset / 10);

[0168] subframe = offset mod 10;

[0169] Among them, SFN represents the number of the radio frame where the starting position of the MCCH period is located, subframe represents the number of the subframe where the starting position of the MCCH period is located, mod represents the remainder operation, and floor represents the rounding-down operation.

[0170] In an optional manner, the first configuration information further includes third indication information, where the third indication information is used to indicate the first PDCCH opportunity index; or,

[0171] The first PDCCH opportunity index defaults to 0;

[0172] The first PDCCH opportunity index is used to indicate the first PDCCH opportunity corresponding to the MCCH PDCCH in the MCCH period and / or the PDCCH opportunity corresponding to the first actually transmitted SSB in the MCCH period.

[0173] In an optional manner, the first configuration information further includes fourth indication information, where the fourth indication information is used to indicate the number of repeated transmissions of the MCCH PDCCH; or,

[0174] The default number of repeated transmissions of the MCCH PDCCH is 1.

[0175] In an optional manner, the first configuration information further includes fifth indication information, where the fifth indication information is used to indicate a search space corresponding to the MCCH PDCCH; or,

[0176] The search space corresponding to the MCCH PDCCH defaults to at least one of the following: OSI search space, RMSI search space, paging search space, and RAR search space.

[0177] In an optional manner, for an MCCH PDCCH in the MCCH period, the index of the PDCCH opportunity corresponding to the kth actually transmitted SSB is:

[0178] k-1;

[0179] Wherein, k is a positive integer greater than or equal to 1 and less than or equal to S; S is the number of SSBs actually transmitted.

[0180] In an optional manner, for an MCCH PDCCH in the MCCH period, the index of the PDCCH opportunity corresponding to the kth actually transmitted SSB is:

[0181] First PDCCH opportunity index + (k-1);

[0182] Wherein, k is a positive integer greater than or equal to 1 and less than or equal to S; S is the number of SSBs actually transmitted.

[0183] In an optional manner, for the h-th repetition transmission of an MCCH PDCCH within the MCCH period, the index of the PDCCH opportunity corresponding to the k-th actually transmitted SSB is:

[0184] S*(h-1)+(k-1);

[0185] Wherein, k is a positive integer greater than or equal to 1 and less than or equal to S; S is the number of SSBs actually transmitted; h is a positive integer greater than or equal to 1 and less than or equal to H; H is the number of repeated transmissions of the MCCH PDCCH.

[0186] In an optional manner, for the h-th repetition transmission of an MCCH PDCCH within the MCCH period, the index of the PDCCH opportunity corresponding to the k-th actually transmitted SSB is:

[0187] First PDCCH opportunity index + S*(h-1)+(k-1);

[0188] Wherein, k is a positive integer greater than or equal to 1 and less than or equal to S; S is the number of SSBs actually transmitted; h is a positive integer greater than or equal to 1 and less than or equal to H; H is the number of repeated transmissions of the MCCH PDCCH.

[0189] In an optional manner, for the h-th repetition transmission of an MCCH PDCCH within the MCCH period, the index of the PDCCH opportunity corresponding to the k-th actually transmitted SSB is:

[0190] The index of the first PDCCH opportunity corresponding to the hth repetition transmission of the MCCH PDCCH + (k-1);

[0191] Wherein, k is a positive integer greater than or equal to 1 and less than or equal to S; S is the number of SSBs actually transmitted; h is a positive integer greater than or equal to 1 and less than or equal to H; H is the number of repeated transmissions of the MCCH PDCCH.

[0192] In an optional manner, the index of the first PDCCH opportunity corresponding to the h-th repeated transmission of the MCCH PDCCH is configured through the first configuration information.

[0193] In an optional manner, the first configuration information is carried in a system broadcast message.

[0194] Those skilled in the art should understand that the relevant description of the above-mentioned MCCH scheduling transmission method in the embodiment of the present application can be understood by referring to the relevant description of the MCCH scheduling transmission method in the embodiment of the present application.

[0195] It should be noted that the technical solutions of the embodiments of the present application can be applied not only to the terminal device side, but also to the network device side, such as a base station. Specifically, the network device determines the correspondence between the PDCCH opportunity and the SSB index, and the PDCCH opportunity is used to transmit the MCCH PDCCH; the network device sends the MCCH PDCCH based on the correspondence between the PDCCH opportunity and the SSB index. Here, the solution for the network device to determine the correspondence between the PDCCH opportunity and the SSB index can refer to the relevant description of the terminal device side mentioned above and will not be repeated here.

[0196] Figure 12 1 is a schematic structural diagram of a communication device 1200 provided in an embodiment of the present application. The communication device can be a terminal device or a network device. Figure 12 The communication device 1200 shown includes a processor 1210, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0197] Alternatively, as Figure 12 As shown, the communication device 1200 may further include a memory 1220. The processor 1210 may call and execute a computer program from the memory 1220 to implement the method in the embodiment of the present application.

[0198] The memory 1220 may be a separate device independent of the processor 1210 , or may be integrated into the processor 1210 .

[0199] Alternatively, as Figure 12 As shown, the communication device 1200 may further include a transceiver 1230 , and the processor 1210 may control the transceiver 1230 to communicate with other devices, specifically, to send information or data to other devices, or to receive information or data sent by other devices.

[0200] The transceiver 1230 may include a transmitter and a receiver. The transceiver 1230 may further include an antenna, and the number of antennas may be one or more.

[0201] Optionally, the communication device 1200 may specifically be a network device in an embodiment of the present application, and the communication device 1200 may implement the corresponding processes implemented by the network device in each method in the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0202] Optionally, the communication device 1200 may specifically be a mobile terminal / terminal device of an embodiment of the present application, and the communication device 1200 may implement the corresponding processes implemented by the mobile terminal / terminal device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0203] Figure 13 It is a schematic structural diagram of the chip of an embodiment of the present application. Figure 13 The chip 1300 shown includes a processor 1310, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0204] Alternatively, as Figure 13 As shown, the chip 1300 may further include a memory 1320. The processor 1310 may call and execute a computer program from the memory 1320 to implement the method in the embodiment of the present application.

[0205] The memory 1320 may be a separate device independent of the processor 1310 , or may be integrated into the processor 1310 .

[0206] Optionally, the chip 1300 may further include an input interface 1330. The processor 1310 may control the input interface 1330 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0207] Optionally, the chip 1300 may further include an output interface 1340. The processor 1310 may control the output interface 1340 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0208] Optionally, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0209] Optionally, the chip can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0210] 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.

[0211] Figure 14 1 is a schematic block diagram of a communication system 1400 provided in an embodiment of the present application. Figure 14As shown, the communication system 1400 includes a terminal device 1410 and a network device 1420 .

[0212] Among them, the terminal device 1410 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 1420 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they are not repeated here.

[0213] It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiment can be completed by hardware integrated logic circuits in the processor or software instructions. The above processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly implemented as a hardware decoding processor, or can be implemented by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0214] It is understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or 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), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0215] It should be understood that the above-mentioned memories are exemplary but not restrictive. For example, the memories in the embodiments of the present application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM RAM (DR RAM), etc. In other words, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0216] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0217] Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0218] Optionally, the computer-readable storage medium can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0219] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0220] Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0221] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiments 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 various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0222] The embodiment of the present application also provides a computer program.

[0223] Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not described here.

[0224] Optionally, the computer program can be applied to the mobile terminal / terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0225] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0226] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0227] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0228] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0229] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0230] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0231] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A multicast control channel (MCCH) scheduling transmission method, the method comprising: The terminal device determines a correspondence between a physical downlink control channel PDCCH opportunity and a synchronization signal block SSB index, wherein the PDCCH opportunity is used to transmit the MCCH PDCCH; The terminal device receives the MCCH PDCCH based on the correspondence between the PDCCH timing and the SSB index, The method further comprises: The terminal device acquires first configuration information, where the first configuration information is used to determine the MCCH period. Among them, when the third indication information and the fourth indication information are not configured in the first configuration information, for an MCCH PDCCH in the MCCH period, the index of the PDCCH opportunity corresponding to the kth actually transmitted SSB is: k-1； Wherein, k is a positive integer greater than or equal to 1 and less than or equal to S; S is the number of SSBs actually transmitted, the third indication information is used to indicate a first PDCCH opportunity index, and the first PDCCH opportunity index is used to indicate the first PDCCH opportunity corresponding to the MCCH PDCCH in the MCCH period and / or the PDCCH opportunity corresponding to the first actually transmitted SSB in the MCCH period, and the fourth indication information is used to indicate the number of repeated transmissions of the MCCH PDCCH, or, When the third indication information is not configured in the first configuration information, but the fourth indication information is configured, for the h-th repeated transmission of an MCCH PDCCH in the MCCH period, the index of the PDCCH opportunity corresponding to the k-th actually transmitted SSB is: S*(h-1)+(k-1); Wherein, k is a positive integer greater than or equal to 1 and less than or equal to S; S is the number of SSBs actually transmitted; h is a positive integer greater than or equal to 1 and less than or equal to H; H is the number of repeated transmissions of the MCCH PDCCH, or, When the third indication information and the fourth indication information are configured in the first configuration information, for the h-th repeated transmission of an MCCH PDCCH in the MCCH period, the index of the PDCCH opportunity corresponding to the k-th actually transmitted SSB is: First PDCCH opportunity index + S*(h-1)+(k-1); Wherein, k is a positive integer greater than or equal to 1 and less than or equal to S; S is the number of SSBs actually transmitted; h is a positive integer greater than or equal to 1 and less than or equal to H; H is the number of repeated transmissions of the MCCH PDCCH, or, When the third indication information and the fourth indication information are configured in the first configuration information, and the index of the corresponding first PDCCH opportunity is configured for each repeated transmission, for the hth repeated transmission of an MCCH PDCCH in the MCCH period, the index of the PDCCH opportunity corresponding to the kth actually transmitted SSB is: The index of the first PDCCH opportunity corresponding to the hth repetition transmission of the MCCH PDCCH + (k-1); Wherein, k is a positive integer greater than or equal to 1 and less than or equal to S; S is the number of SSBs actually transmitted; h is a positive integer greater than or equal to 1 and less than or equal to H; H is the number of repeated transmissions of the MCCH PDCCH, The first configuration information further includes fifth indication information, and the fifth indication information is used to indicate a search space corresponding to the MCCHPDCCH; or The search space corresponding to the MCCH PDCCH defaults to at least one of the following: other system information OSI search space, remaining minimum system information RMSI search space, paging search space, and random access response RAR search space.

2. The method according to claim 1, wherein In the MCCH period, the PDCCH opportunities corresponding to the MCCH PDCCH are numbered starting from 0.

3. The method according to claim 1, wherein The first configuration information includes at least one of the following: First indication information, where the first indication information is used to determine the length of the MCCH cycle; Second indication information, where the second indication information is used to determine the starting position of the MCCH period.

4. The method according to claim 3, wherein: The first indication information is used to indicate T, where T is a positive integer greater than or equal to 1; the second indication information is used to indicate an offset value offset; The length of the MCCH cycle is T radio frames; At least one of the radio frame, subframe, time slot and symbol where the starting position of the MCCH period is located is determined based on the offset.

5. The method according to claim 4, wherein The radio frame where the starting position of the MCCH period is located satisfies the following formula: SFN mod T = offset; SFN represents the number of the radio frame where the starting position of the MCCH period is located, and mod represents the modulo operation.

6. The method according to claim 4, wherein: The radio frame and subframe where the starting position of the MCCH period is located satisfy the following formula: SFN mod T=floor(offset / 10); subframe = offset mod 10; Among them, SFN represents the number of the radio frame where the starting position of the MCCH period is located, subframe represents the number of the subframe where the starting position of the MCCH period is located, mod represents the remainder operation, and floor represents the rounding-down operation.

7. The method according to claim 1, wherein The index of the first PDCCH opportunity corresponding to the h-th repeated transmission of the MCCH PDCCH is configured through the first configuration information.

8. The method according to any one of claims 1 to 6, wherein The first configuration information is carried in a system broadcast message.

9. An MCCH scheduling transmission device, applied to a terminal device, the device comprising: a determining unit, configured to determine a correspondence between a PDCCH opportunity and an SSB index, wherein the PDCCH opportunity is used to transmit an MCCH PDCCH; a receiving unit, configured to receive an MCCH PDCCH based on a correspondence between the PDCCH opportunity and the SSB index; Wherein, the device further comprises: an acquiring unit, configured to acquire first configuration information, where the first configuration information is used to determine an MCCH period; Among them, when the third indication information and the fourth indication information are not configured in the first configuration information, for an MCCH PDCCH in the MCCH period, the index of the PDCCH opportunity corresponding to the kth actually transmitted SSB is: k-1； Wherein, k is a positive integer greater than or equal to 1 and less than or equal to S; S is the number of SSBs actually transmitted, the third indication information is used to indicate a first PDCCH opportunity index, and the first PDCCH opportunity index is used to indicate the first PDCCH opportunity corresponding to the MCCH PDCCH in the MCCH period and / or the PDCCH opportunity corresponding to the first actually transmitted SSB in the MCCH period, and the fourth indication information is used to indicate the number of repeated transmissions of the MCCH PDCCH, or, When the third indication information is not configured in the first configuration information, but the fourth indication information is configured, for the h-th repeated transmission of an MCCH PDCCH in the MCCH period, the index of the PDCCH opportunity corresponding to the k-th actually transmitted SSB is: S*(h-1)+(k-1); Wherein, k is a positive integer greater than or equal to 1 and less than or equal to S; S is the number of SSBs actually transmitted; h is a positive integer greater than or equal to 1 and less than or equal to H; H is the number of repeated transmissions of the MCCH PDCCH, or, When the third indication information and the fourth indication information are configured in the first configuration information, for the h-th repeated transmission of an MCCH PDCCH in the MCCH period, the index of the PDCCH opportunity corresponding to the k-th actually transmitted SSB is: First PDCCH opportunity index + S*(h-1)+(k-1); Wherein, k is a positive integer greater than or equal to 1 and less than or equal to S; S is the number of SSBs actually transmitted; h is a positive integer greater than or equal to 1 and less than or equal to H; H is the number of repeated transmissions of the MCCH PDCCH, or, When the third indication information and the fourth indication information are configured in the first configuration information, and the index of the corresponding first PDCCH opportunity is configured for each repeated transmission, for the hth repeated transmission of an MCCH PDCCH in the MCCH period, the index of the PDCCH opportunity corresponding to the kth actually transmitted SSB is: The index of the first PDCCH opportunity corresponding to the hth repetition transmission of the MCCH PDCCH + (k-1); Wherein, k is a positive integer greater than or equal to 1 and less than or equal to S; S is the number of SSBs actually transmitted; h is a positive integer greater than or equal to 1 and less than or equal to H; H is the number of repeated transmissions of the MCCH PDCCH, The first configuration information further includes fifth indication information, and the fifth indication information is used to indicate a search space corresponding to the MCCHPDCCH; or The search space corresponding to the MCCH PDCCH defaults to at least one of the following: other system information OSI search space, remaining minimum system information RMSI search space, paging search space, and random access response RAR search space.

10. The device according to claim 9, wherein In the MCCH period, the PDCCH opportunities corresponding to the MCCH PDCCH are numbered starting from 0.

11. The device according to claim 9, wherein The first configuration information includes at least one of the following: First indication information, where the first indication information is used to determine the length of the MCCH cycle; Second indication information, where the second indication information is used to determine the starting position of the MCCH period.

12. The device according to claim 11, wherein The first indication information is used to indicate T, where T is a positive integer greater than or equal to 1; the second indication information is used to indicate an offset; The length of the MCCH cycle is T radio frames; At least one of the radio frame, subframe, time slot and symbol where the starting position of the MCCH period is located is determined based on the offset.

13. The device according to claim 12, wherein The radio frame where the starting position of the MCCH period is located satisfies the following formula: SFN mod T = offset; SFN represents the number of the radio frame where the starting position of the MCCH period is located, and mod represents the modulo operation.

14. The device according to claim 12, wherein The radio frame and subframe where the starting position of the MCCH period is located satisfy the following formula: SFN mod T=floor(offset / 10); subframe = offset mod 10; Among them, SFN represents the number of the radio frame where the starting position of the MCCH period is located, subframe represents the number of the subframe where the starting position of the MCCH period is located, mod represents the remainder operation, and floor represents the rounding-down operation.

15. The device according to claim 9, wherein The index of the first PDCCH opportunity corresponding to the h-th repeated transmission of the MCCH PDCCH is configured through the first configuration information.

16. The device according to any one of claims 9 to 14, wherein The first configuration information is carried in a system broadcast message.

17. A terminal device comprising: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method according to any one of claims 1 to 8.

18. A chip, comprising: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes the method according to any one of claims 1 to 8.

19. A computer-readable storage medium for storing a computer program, wherein the computer program causes a computer to execute the method according to any one of claims 1 to 8.

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