A method, device and storage medium for transmitting control information

Abstract

The application discloses a transmission method, device and storage medium of control information. The method comprises the following steps: receiving first information sent by a second communication node, wherein the first information comprises a change period of each multicast broadcast service (MBS) or an MBS control information change indication.

Description

TECHNICAL FIELD

[0001] The present application relates to a wireless communication network, for example, to a method, device and storage medium for transmitting control information. BACKGROUND

[0002] With the continuous development of wireless communication networks, wireless communication has played an increasingly important role in people's lives. At present, the 3rd Generation Partnership Project (3GPP) is studying how to implement the transmission of Multicast and broadcast service (MBS) on the New Radio (NR) architecture of the 5th Generation (5G). Due to different application scenarios, MBS will have various latency and reliability requirements. Therefore, how to improve the transmission efficiency of system control information and reduce the reception power consumption of terminal devices has become a problem to be solved. SUMMARY

[0003] The present application provides a method, device and storage medium for transmitting control information, which can realize the transmission of control information and reduce the overhead of communication devices.

[0004] The present application provides a method for transmitting control information, applied to a first communication node, comprising:

[0005] receiving first information sent by a second communication node, wherein the first information comprises a change period of each MBS or an MBS control information change indication.

[0006] The present application provides a method for transmitting control information, applied to a second communication node, comprising:

[0007] sending first information to a first communication node, wherein the first information comprises a change period of each MBS or an MBS control information change indication.

[0008] The present application provides a method for transmitting control information, applied to a third communication node, comprising:

[0009] generating second information, wherein the second information is used to indicate that a fourth communication node sends an MBS control information change indication to a first communication node;

[0010] sending the second information to the fourth communication node.

[0011] The present application provides a method for transmitting control information, applied to a fourth communication node, comprising:

[0012] receive the second information sent by the third communication node, wherein the second information is used to indicate that the fourth communication node sends the MBS control information change indication to the first communication node.

[0013] An apparatus is provided, comprising: a processor; the processor is configured to implement the method of any of the above embodiments when executing a computer program.

[0014] A computer readable storage medium is also provided, which stores a computer program, and the computer program is configured to implement the method of any of the above embodiments when executed by a processor.

[0015] Further description of the above embodiments and other aspects of the present application and implementation manners thereof is provided in the description of drawings, specific embodiments and claims. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a flowchart of a control information transmission method provided by an embodiment;

[0017] Figure 2 is a flowchart of another control information transmission method provided by an embodiment;

[0018] Figure 3 is a flowchart of still another control information transmission method provided by an embodiment;

[0019] Figure 4 is a flowchart of yet another control information transmission method provided by an embodiment;

[0020] Figure 5 is an interaction diagram of a control information transmission method provided by an embodiment;

[0021] Figure 6 is an interaction diagram of another control information transmission method provided by an embodiment;

[0022] Figure 7 is an interaction diagram of still another control information transmission method provided by an embodiment;

[0023] Figure 8 is an interaction diagram of yet another control information transmission method provided by an embodiment;

[0024] Figure 9 is an interaction diagram of still another control information transmission method provided by an embodiment;

[0025] Figure 10 is an interaction diagram of still another control information transmission method provided by an embodiment;

[0026] Figure 11FIG. 1 is a structural schematic diagram of a control information transmission device according to an embodiment of the present application;

[0027] Figure 12 FIG. 2 is a structural schematic diagram of another control information transmission device according to an embodiment of the present application;

[0028] Figure 13 FIG. 3 is a structural schematic diagram of still another control information transmission device according to an embodiment of the present application;

[0029] Figure 14 FIG. 4 is a structural schematic diagram of yet another control information transmission device according to an embodiment of the present application;

[0030] Figure 15 FIG. 5 is a structural schematic diagram of a base station according to an embodiment of the present application;

[0031] Figure 16 FIG. 6 is a structural schematic diagram of a UE according to an embodiment of the present application. DETAILED DESCRIPTION

[0032] Hereinafter, the embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0033] At present, in the 5G era, MBS can have various different application scenarios, and different application scenarios can have different latency and reliability requirements. How to improve the sending efficiency of system control information and reduce the receiving power consumption of terminal devices has become a problem to be solved at present. Therefore, it is necessary to separately design MBS flexibly on the NR architecture. Meanwhile, for MBSs with different latency and reliability requirements, terminal devices (such as user equipment (UE)) need to consider the impact of information reception on power consumption, and access network devices need to set differentiated configuration information reception mechanisms to reduce the receiving power consumption of terminal devices as much as possible.

[0034] The embodiments of the present application provide a mobile communication network (including but not limited to 5G), and the network architecture of the network can include terminal devices and access network devices. The terminal devices are connected with the access network devices in a wireless manner, and the terminal devices can be fixed or movable. In the embodiments of the present application, a control information transmission method, device and storage medium capable of running on the above network architecture are provided, which can realize the transmission of control information and reduce the overhead of communication devices.

[0035] The access network device is an access device through which a terminal device accesses the mobile communication system wirelessly, and can be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in a 5G mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, etc. The access network device can also be a module or unit that completes part of the functions of a base station, for example, a central unit (CU) or a distributed unit (DU). Embodiments of the present application do not limit the specific technology and specific device form of the access network device. In the present application, the access network device can be referred to simply as a network device, and the network device refers to the access network device unless otherwise specified.

[0036] The terminal device can also be referred to as a terminal, a user equipment (UE), a mobile station, a mobile terminal, etc. The terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality terminal device, an augmented reality terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in remote surgery, a wireless terminal in smart power grids, a wireless terminal in transportation safety, a wireless terminal in smart cities, a wireless terminal in smart homes, etc. Embodiments of the present application do not limit the specific technology and specific device form of the terminal device.

[0037] Next, a transmission method of control information, a device, and technical effects thereof are described.

[0038] Figure 1 A flowchart of a transmission method of control information provided by an embodiment is shown in FIG. 1. As shown in FIG. 1, the method provided by the embodiment is applicable to a first communication node (such as a terminal device), and the method includes the following steps. Figure 1

[0039] S110, receiving first information sent by a second communication node, wherein the first information includes a change period of each multicast broadcast service (MBS) or an MBS control information change indication.

[0040] In an embodiment, the first communication node and the second communication node are connected through an air interface (Uu interface).

[0041] ​In an embodiment, the first information can include a change period of each multicast broadcast service (MBS), i.e., the second communication node informs the first communication node that the MBS can change; the first information can also directly carry an MBS control information change indication, i.e., the second communication node directly informs the first communication node that the MBS changes.

[0042] In a first possible implementation, when the first information includes a change period of each MBS, the first information is MBS control information. Accordingly, after the first communication node receives the MBS control information sent by the second communication node, the first communication node can also parse whether there is an MBS control information change indication at the change period of each MBS according to the change period of each MBS.

[0043] When the first information includes a change period of each MBS, for the first communication node in a multicast reception state (i.e., the first communication node is in a connected state), the first information can be sent through a dedicated radio resource control (RRC) message, and the dedicated RRC message can configure a change period of a service of interest for each first communication node. The first communication node can periodically parse whether there is an MBS control information change indication according to the change period of the MBS for the MBS of interest.

[0044] In a second possible implementation, when the first information includes an MBS control information change indication, the method for the first communication node to receive the first information sent by the second communication node can include any one of the following three methods:

[0045] Method A1, for the first communication node in any state, receiving the first information sent by the second communication node through a paging message (Paging message).

[0046] Method A2, for the first communication node in a connected state, receiving the first information sent by the second communication node through a short message (Short message); or, receiving the first information sent by the second communication node through a downlink media access control control element (DL MAC CE); or, receiving the first information sent by the second communication node through a dedicated RRC message.

[0047] Method A3, for the first communication node in a multicast reception state, receiving the first information sent by the second communication node through a group paging message (Group Paging message).

[0048] In an embodiment, the MBS control information change indication is in MBS granularity, so that the first communication node decides whether to receive the control information of the new MBS according to whether the service of interest changes; or in cell granularity.

[0049] In an embodiment, when the first communication node is in the multicast reception state, the first information further includes a list of MBSs whose channels change and updated control information of the MBSs.

[0050] Figure 2 A flowchart of another method for transmitting control information provided by an embodiment is shown, as shown in the figure, the method provided by the embodiment is applicable to a second communication node (such as a base station or a base station distributed unit DU), and the method includes the following steps. Figure 2

[0051] S210, send first information to the first communication node, wherein the first information includes a change period of each multicast broadcast service MBS or an MBS control information change indication.

[0052] In an embodiment, the first communication node and the second communication node are connected through an air interface Uu interface.

[0053] In an embodiment, the first information can include the change period of each multicast broadcast service MBS, that is, the second communication node informs the first communication node that the MBS may change; the first information can also directly carry the MBS control information change indication, that is, the second communication node directly informs the first communication node that the MBS changes.

[0054] In a possible implementation manner, when the first information includes the MBS control information change indication, the method for the second communication node to send the first information to the first communication node can include any one of the following three methods:

[0055] Method B1, for the first communication node in any state, send the first information to the first communication node through a paging message (Paging message).

[0056] Method B2, for the first communication node in the connected state, send the first information to the first communication node through a short message (Short message); or send the first information to the first communication node through a downlink medium access control unit (DL MAC CE); or send the first information to the first communication node through a dedicated RRC message.

[0057] Method B3, for the first communication node in the multicast reception state, send the first information to the first communication node through a group paging message (Group Paging message).

[0058] ​In an embodiment, the MBS control information change indication is in MBS granularity, so that the first communication node decides whether to receive the control information of the new MBS according to whether the service of interest changes; or in cell granularity.

[0059] In an embodiment, when the first communication node is in a multicast receiving state, the first information further includes a list of MBSs for which the channel changes and updated control information of the MBSs.

[0060] Figure 3 A flowchart of another method for transmitting control information provided by an embodiment is shown in FIG. 6. As shown in FIG. 6, the method provided by the embodiment is applicable to a third communication node (such as a base station centralized unit CU), and the method includes the following steps. Figure 3

[0061] S310, generating second information, wherein the second information is used to indicate that the fourth communication node sends an MBS control information change indication to the first communication node.

[0062] S320, sending the second information to the fourth communication node.

[0063] When it is necessary to indicate that the first communication node changes the sending of the control information of the MBS, the third communication node first generates second information and sends the second information to the fourth communication node (such as a base station distributed unit DU). The third communication node and the fourth communication node are connected through an F1 interface, and therefore the second information is F1 interface application protocol information.

[0064] In an embodiment, the second information is specifically used to indicate that the fourth communication node sends the MBS control information change indication to the first communication node through a paging message (Paging message); or when the first communication node is in a connected state, indicates that the fourth communication node sends the MBS control information change indication to the first communication node through a short message (Short message); or when the first communication node is in a connected state, indicates that the fourth communication node sends the MBS control information change indication to the first communication node through a downlink medium access control element DL MAC CE; or when the first communication node is in a multicast receiving state, indicates that the fourth communication node sends the MBS control information change indication to the first communication node through a group paging message (Group Paging message).

[0065] Figure 4 A flowchart of another method for transmitting control information provided by an embodiment is shown in FIG. 6. As shown in FIG. 6, the method provided by the embodiment is applicable to a third communication node (such as a base station centralized unit CU), and the method includes the following steps. Figure 4

[0066] ​​S410, receiving second information sent by the third communication node, wherein the second information is used to indicate that the fourth communication node sends the MBS control information change indication to the first communication node.

[0067] In an embodiment, the third communication node and the fourth communication node are connected through an F1 interface, and therefore the second information is F1 interface application protocol information.

[0068] The second information is specifically used to indicate that the fourth communication node sends the MBS control information change indication to the first communication node through a paging message (Paging message); or when the first communication node is in a connected state, indicates that the fourth communication node sends the MBS control information change indication to the first communication node through a short message (Short message); or when the first communication node is in a connected state, indicates that the fourth communication node sends the MBS control information change indication to the first communication node through a downlink medium access control unit (DL MAC CE); or when the first communication node is in a multicast receiving state, indicates that the fourth communication node sends the MBS control information change indication to the first communication node through a group paging message (Group Paging message).

[0069] S420, sending the MBS control information change indication to the first communication node through a paging message; or when the first communication node is in a connected state, sending the MBS control information change indication to the first communication node through a short message; or when the first communication node is in a connected state, sending the MBS control information change indication to the first communication node through a DL MAC CE; or when the first communication node is in a multicast receiving state, sending the MBS control information change indication to the first communication node through a group paging message.

[0070] Corresponding to the second information, when the second information indicates that the fourth communication node sends the MBS control information change indication to the first communication node through a paging message, the fourth communication node sends the MBS control information change indication to the first communication node through the paging message according to the second information; when the first communication node is in a connected state and the second information indicates that the fourth communication node sends the MBS control information change indication to the first communication node through a short message, the fourth communication node sends the MBS control information change indication to the first communication node through the short message according to the second information; when the first communication node is in a connected state and the second information indicates that the fourth communication node sends the MBS control information change indication to the first communication node through a downlink medium access control element (DL MAC CE), the fourth communication node sends the MBS control information change indication to the first communication node through the DL MAC CE according to the second information; when the first communication node is in a multicast receiving state and the second information indicates that the fourth communication node sends the MBS control information change indication to the first communication node through a group paging message, the fourth communication node sends the MBS control information change indication to the first communication node through the group paging message according to the second information.

[0071] Some example embodiments are listed below to illustrate the transmission method of control information provided by the embodiments of the present application. The following example embodiments can be executed singly or in combination.

[0072] In a first example embodiment, Figure 5 An interaction schematic diagram of a transmission method of control information provided by an embodiment is shown, as Figure 5 shown, the example embodiment is applicable to a first communication node (such as a terminal device) and a second communication node (such as a base station or a base station distributed unit (DU)), and the first communication node can be in any state. The method comprises the following steps.

[0073] S510, the second communication node sends system information to the first communication node.

[0074] The system information (SI) comprises control information related to the control of the current cell broadcast MBS, i.e., the control information of the current cell multicast control channel (MCCH), which is used by the first communication node to parse the time-frequency resource position of the current cell MCCH and read the content therein, i.e., the time-frequency resource position of each MBS channel multicast service channel (Multicast Traffice Channel, MTCH) supported by the current cell, and read each MBS data content, so that the first communication node obtains broadcast services.

[0075] S520, the first communication node receives the system information sent by the second communication node.

[0076] S530, the second communication node sends the first information to the first communication node, the first information including the change period of each multicast broadcast service MBS.

[0077] In an embodiment, the second communication node sends the first information through the MCCH of the current cell. The first information is the MBS control information.

[0078] In addition to the change period of each multicast broadcast service MBS, the first information can also include the configuration, scheduling information related to the current cell broadcast MBS, and the adjacent cell list information. Specifically, for each MBS, the first communication node can obtain at least one of the following information: the temporary mobile group identity (TMGI) of the MBS, the session ID, the G-radio network temporary identity (G-RNTI), the scheduling information of the channel MTCH for transmitting the MBS (scheduling time domain resource information), and the adjacent cell list supporting the MBS.

[0079] S540, the first communication node receives the first information sent by the second communication node.

[0080] S550, the first communication node parses the MBS control information change indication according to the change period of each MBS.

[0081] For the MBS of interest to the first communication node, the first communication node parses the downlink control information (DCI) at the corresponding time domain according to the change period of each MBS when the system frame and the subframe satisfy the change period condition, and parses whether there is an MBS control information change indication. If there is, the first communication node determines that the control information of the MBS has changed, and receives the new MBS control information indicated by the new MCCH in the current period or the next period, and receives the MBS data stream using the new MBS control information.

[0082] For the first communication node in the multicast receiving state (i.e. the first communication node is in the connected state), the first information can be sent through a dedicated RRC message, and the dedicated RRC message can configure the change period of the service of interest for each first communication node. The first communication node can periodically parse whether there is an MBS control information change indication according to the change period of the MBS of interest.

[0083] In a second exemplary embodiment,Figure 6 An interaction diagram illustrating another method for transmitting control information according to an embodiment is shown in FIG. 6. Figure 6 As shown, the example embodiment is applicable to a first communication node (such as a terminal device), a third communication node (such as a base station centralized unit CU) and a fourth communication node (such as a base station distributed unit DU), the first communication node can be in any state, and the method comprises the following steps.

[0084] S610, the third communication node generates second information, the second information is used to instruct the fourth communication node to send the MBS control information change indication to the first communication node through a paging message.

[0085] When the access network device wants to change the control information of the MBS supported by the current cell, the third communication node first generates the second information, and sends the second information to the fourth communication node through the F1 interface application protocol information.

[0086] S620, the third communication node sends the second information to the fourth communication node.

[0087] S630, the fourth communication node receives the second information sent by the third communication node.

[0088] S640, the fourth communication node sends the MBS control information change indication to the first communication node through a paging message.

[0089] The fourth communication node sends the MBS control information change indication to the first communication node through a paging message (Paging message) on the time-frequency resource by using the air interface Uu interface.

[0090] The MBS control information change indication is in the granularity of MBS, so that the first communication node decides whether to receive the new control information of the MBS according to whether the interested service changes; or in the granularity of cell.

[0091] S650, the first communication node receives the MBS control information change indication sent by the fourth communication node.

[0092] In an embodiment, the first communication node parses a DCI on a physical downlink control channel (PDCCH) with a paging-radio network temporary identity (P-RNTI) at a corresponding time-frequency resource. When determining that there is a UE identity (such as a UE ID) of itself in the paging message, the first communication node acquires the MBS control information change indication from the paging message, so as to know that the control information of the current cell broadcast control channel MCCH has changed, and receive new MBS control information indicated by the new MCCH in the current period or the next period, and receive the MBS data stream using the new MBS control information.

[0093] In a third exemplary embodiment, Figure 7 An interaction schematic diagram of another method for transmitting control information provided by an embodiment is shown, and as shown in the diagram, Figure 7 The exemplary embodiment is applicable to a first communication node (such as a terminal device), a third communication node (such as a base station centralized unit CU), and a fourth communication node (such as a base station distributed unit DU), and the first communication node can be in a connected state. The method comprises the following steps.

[0094] S710, the third communication node generates second information, and the second information is used to instruct the fourth communication node to send an MBS control information change indication to the first communication node through a short message.

[0095] For a UE in a connected state, the access network device can notify the UE of a change in the control information of the MBS in real time. When the UE receives the real-time MBS control information change indication, the UE reads the new MCCH change information again, so as to obtain the new MBS control information.

[0096] When the access network device wants to change the control information of the MBS supported by the current cell, the third communication node first generates second information, and sends the second information to the fourth communication node through an F1 interface application protocol information.

[0097] S720, the third communication node sends the second information to the fourth communication node.

[0098] S730, the fourth communication node receives the second information sent by the third communication node.

[0099] S740, the fourth communication node sends an MBS control information change indication to the first communication node through a short message.

[0100] The fourth communication node uses the air interface Uu interface to send an MBS control information change instruction to the first communication node via a short message on time and frequency resources.

[0101] MBS control information change indication is at the MBS granularity, so that the first communication node can decide whether to receive new MBS control information based on whether the service of interest has changed; or at the cell granularity.

[0102] S750, the first communication node receives the MBS control information change instruction sent by the fourth communication node.

[0103] In one embodiment, the first communication node uses a dedicated DCI for short messages to parse the PDCCH at the corresponding time-frequency resource. When a short message indicated on the DCI is parsed, the MBS control information change indication is obtained from the short message, thereby understanding that the control information of the current cell broadcast control channel MCCH has changed, and receiving the new MBS control information indicated by the new MCCH in the current cycle or the next cycle, and using the new MBS control information to receive the MBS data stream.

[0104] In the fourth exemplary embodiment, Figure 8 An interactive schematic diagram of another control information transmission method provided in one embodiment is shown, such as... Figure 8 As shown, this exemplary implementation is applicable to a first communication node (such as a terminal device), a third communication node (such as a base station centralized unit CU), and a fourth communication node (such as a base station distributed unit DU). The first communication node can be in a connected state. The method includes the following steps.

[0105] S810, the third communication node generates second information, which is used to instruct the fourth communication node to send an MBS control information change instruction to the first communication node through the downlink media access control unit (DL MAC CE).

[0106] For a UE in connected state, the access network device can notify the UE in real time of changes to the MBS control information. After receiving the real-time MBS control information change indication, the UE then reads the new MCCH change information to obtain the new MBS control information.

[0107] When the access network device needs to change the control information of the MBS supported by the current cell, the third communication node first generates the second information and sends the second information to the fourth communication node through the F1 interface application protocol information.

[0108] S820, the third communication node sends the second information to the fourth communication node.

[0109] S830, the fourth communication node receives the second information sent by the third communication node.

[0110] S840, the fourth communication node sends the MBS control information change indication to the first communication node through a DL MAC CE.

[0111] The fourth communication node sends the MBS control information change indication to the first communication node through a DL MAC CE on a time-frequency resource by using an air interface Uu interface.

[0112] The MBS control information change indication is in the granularity of MBS, so that the first communication node decides whether to receive the control information of the new MBS according to whether the service of interest changes; or in the granularity of a cell.

[0113] S850, the first communication node receives the MBS control information change indication sent by the fourth communication node.

[0114] In an embodiment, the first communication node acquires the DL MAC CE in downlink data, wherein the DL MAC CE carries the MBS control information change indication, so as to know that the control information of the current cell broadcast control channel MCCH changes, and receive the new MBS control information indicated by the new MCCH in the current period or the next period, and receive the MBS data stream by using the new MBS control information.

[0115] In a fifth exemplary embodiment, Figure 9 An interaction schematic diagram of another control information transmission method provided by an embodiment is shown, as shown in the figure, the exemplary embodiment is applicable to a first communication node (such as a terminal device) and a second communication node (such as a base station or a base station distributed unit DU), the first communication node can be in a connected state, and the method comprises the following steps. Figure 9

[0116] S910, the second communication node sends the MBS control information change indication to the first communication node through a dedicated RRC message.

[0117] For the UE in the connected state, the access network device can notify the UE in real time that the control information of the MBS changes. When the UE receives the real-time MBS control information change indication, the UE reads the new MCCH change information again, so as to obtain the new MBS control information.

[0118] The second communication node sends the MBS control information change indication to the first communication node through a dedicated RRC message on a time-frequency resource by using an air interface Uu interface.

[0119] ​The MBS control information change indication is in the granularity of MBS, so that the first communication node decides whether to receive the control information of the new MBS according to whether the service of interest changes; or the granularity of cell.

[0120] S920, the first communication node receives the MBS control information change indication sent by the second communication node.

[0121] In an embodiment, the first communication node receives the dedicated RRC message and acquires the MBS control information change indication carried therein, so as to know that the control information of the current cell broadcast control channel MCCH changes, and receives the new MBS control information indicated by the new MCCH in the current period or the next period, and receives the MBS data stream using the new MBS control information.

[0122] In a sixth exemplary embodiment, Figure 10 An interaction schematic diagram of another method for transmitting control information provided by an embodiment is shown, as Figure 10 The exemplary embodiment is applicable to a first communication node (such as a terminal device), a third communication node (such as a base station centralized unit CU) and a fourth communication node (such as a base station distributed unit DU), and the first communication node can be in a multicast receiving state, and the method comprises the following steps.

[0123] S1010, the third communication node generates second information, and the second information is used to indicate that the fourth communication node sends the MBS control information change indication to the first communication node through a group paging message.

[0124] For a group of UEs performing MBS multicast reception, the access network device can send a configuration message of the Group paging message to the group of UEs through system information SI or Master Information Block (MIB) information or RRC dedicated signaling, including control information such as Discontinuous Reception (DRX) of the Group paging message. The UE can parse the time-frequency resource information of sending the Group paging message by reading the configuration message of the Group paging message, so as to further read the content of the Group paging message.

[0125] When the access network device wants to change the control information of the MBS supported by the current cell, the third communication node first generates the second information, and sends the second information to the fourth communication node through the F1 interface application protocol information.

[0126] S1020, the third communication node sends the second information to the fourth communication node.

[0127] S1030, the fourth communication node receives the second information sent by the third communication node.

[0128] S1040, the fourth communication node sends the MBS control information change indication to the first communication node through a group paging message.

[0129] The fourth communication node sends the MBS control information change indication to the first communication node through a group paging message (Group Paging message) on the time-frequency resource by using the air interface Uu interface.

[0130] The MBS control information change indication is in the granularity of MBS, so that the first communication node decides whether to receive the control information of the new MBS according to whether the service of interest changes; or in the granularity of cell.

[0131] In an embodiment, the fourth communication node can also send the MBS information to be changed to the first communication node, wherein the MBS information to be changed at least includes the MBS list to be changed and the updated MBS control information.

[0132] S1050, the first communication node receives the MBS control information change indication sent by the fourth communication node.

[0133] The first communication node can receive the control information of the Group paging message through a system information block (SIB) message or a broadcast configuration channel or an RRC dedicated message.

[0134] In an embodiment, the first communication node parses the PDCCH at the corresponding time-frequency resource with a short message dedicated DCI or RNTI. When the short message indicated on the DCI is parsed, the MBS control information change indication is obtained from the short message, so as to understand that the control information of the current cell broadcast control channel (MCCH) has changed, and further parse the transmission channel time-frequency resource of the Group Paging message, read the content of the Group Paging message to obtain the specific content of the changed MBS information, including the changed MBS list and the updated MBS control information. If there is a service of interest of the first communication node in the MBS change control information, the new MBS control information is used to receive the MBS data stream.

[0135] Figure 11 An embodiment provides a structural schematic diagram of a control information transmission device, which can be configured in a terminal device, as shown in the figure, including a communication module 10 and a processing module 11. Figure 11

[0136] ​The communication module 10 is configured to receive first information sent by the second communication node, wherein the first information comprises a change period of each multicast broadcast service (MBS) or an MBS control information change indication.

[0137] The control information transmission device provided in the embodiment is used for implementing the control information transmission method Figure 1 The control information transmission device provided in the embodiment implements the principle and technical effects similar to those of the above-mentioned embodiments, and thus details are not described herein.

[0138] In an embodiment, when the first information comprises the change period of each MBS, the first information is MBS control information.

[0139] The processing module 11 is configured to parse the MBS control information change indication according to the change period of each MBS.

[0140] In an embodiment, when the first information comprises the MBS control information change indication, the communication module 10 is configured to receive the first information sent by the second communication node through a paging message, or receive the first information sent by the second communication node through a short message, or receive the first information sent by the second communication node through a downlink medium access control element (DL MAC CE), or receive the first information sent by the second communication node through a dedicated radio resource control (RRC) message, or receive the first information sent by the second communication node through a group paging message.

[0141] In an embodiment, the MBS control information change indication is in the granularity of MBS or in the granularity of a cell.

[0142] In an embodiment, the first information further comprises an MBS list of which the channel is changed and updated MBS control information.

[0143] In an embodiment, the second communication node comprises one of the following: a base station; a base station distributed unit.

[0144] Figure 12 The structure diagram of another control information transmission device provided in an embodiment is shown in the figure, which can be configured in an access network device, such as a base station distributed unit (DU) or a base station (gNB). Figure 12 As shown in the figure, the device comprises a communication module 20.

[0145] The communication module 20 is configured to send first information to a first communication node, wherein the first information comprises a change period of each multicast broadcast service (MBS) or an MBS control information change indication.

[0146] The control information transmission device provided in the embodiment is used for implementing the control information transmission method Figure 2The transmission method of the control information of the embodiment, the implementation principle and technical effects of the control information transmission device provided by the embodiment are similar to those of the above-mentioned embodiments, and details are not repeated here.

[0147] In an embodiment, when the first information comprises the MBS control information change indication, the communication module 20 is configured to send the first information to the first communication node through a paging message; or, send the first information to the first communication node through a short message; or, send the first information to the first communication node through a downlink medium access control unit DL MAC CE; or, send the first information to the first communication node through a dedicated radio resource control RRC message; or, send the first information to the first communication node through a group paging message.

[0148] In an embodiment, the MBS control information change indication is in the granularity of MBS or in the granularity of cell.

[0149] In an embodiment, the first information further comprises an MBS list of which the channel is changed and control information of the updated MBS.

[0150] Figure 13 The structure diagram of another control information transmission device provided by an embodiment is shown in the figure, which can be configured in the CU of the access network equipment, such as Figure 13 As shown, it comprises a generation module 30 and a communication module 31.

[0151] The generation module 30 is configured to generate second information, wherein the second information is used to instruct the fourth communication node to send the MBS control information change indication to the first communication node.

[0152] The communication module 31 is configured to send the second information to the fourth communication node.

[0153] The control information transmission device provided by the embodiment is used to realize Figure 3 The transmission method of the control information of the embodiment, the implementation principle and technical effects of the control information transmission device provided by the embodiment are similar to those of the above-mentioned embodiments, and details are not repeated here.

[0154] In an embodiment, the second information is F1 interface application protocol information.

[0155] The second information is specifically used to instruct the fourth communication node to send the MBS control information change indication to the first communication node through a paging message; or, instruct the fourth communication node to send the MBS control information change indication to the first communication node through a short message; or, instruct the fourth communication node to send the MBS control information change indication to the first communication node through a downlink medium access control unit DL MAC CE; or, instruct the fourth communication node to send the MBS control information change indication to the first communication node through a group paging message.

[0156] Figure 14 Another structure schematic diagram of the transmission device of control information provided by an embodiment is shown in the figure, which can be configured in the DU of the access network device, and includes a communication module 40. Figure 14

[0157] The communication module 40 is configured to receive second information sent by a third communication node, wherein the second information is used to indicate that a fourth communication node sends an MBS control information change indication to the first communication node.

[0158] The transmission device of control information provided by the embodiment is used to implement the transmission method of control information of the embodiment shown in the figure. Figure 4 The implementation principle and technical effects of the transmission device of control information provided by the embodiment are similar to those of the above-mentioned embodiments, and will not be repeated here.

[0159] In an embodiment, the second information is F1 interface application protocol information.

[0160] The second information is specifically used to indicate that the fourth communication node sends the MBS control information change indication to the first communication node through a paging message, or that the fourth communication node sends the MBS control information change indication to the first communication node through a short message, or that the fourth communication node sends the MBS control information change indication to the first communication node through a downlink medium access control unit (DL MAC CE), or that the fourth communication node sends the MBS control information change indication to the first communication node through a group paging message.

[0161] In an embodiment, the communication module 40 is further configured to send the MBS control information change indication to the first communication node through a paging message, or to send the MBS control information change indication to the first communication node through a short message, or to send the MBS control information change indication to the first communication node through a downlink medium access control unit (DL MAC CE), or to send the MBS control information change indication to the first communication node through a group paging message.

[0162] The embodiments of the present application also provide a device, which includes a processor, and the processor is used to implement the method provided by any of the embodiments of the present application when executing a computer program. Specifically, the device can be the access point device provided by any of the embodiments of the present application, or the terminal device provided by any of the embodiments of the present application, and the present application does not make specific limitations.

[0163] For example, the following embodiment provides a structure schematic diagram of a device as a base station and a UE.

[0164] Figure 15 A structure schematic diagram of a base station provided by an embodiment is shown in the figure, which includes a communication module 40.​Figure 15 As shown, the base station includes a processor 60, a memory 61 and a communication interface 62; the number of processors 60 in the base station can be one or more, Figure 15 In an embodiment, one processor 60 is taken as an example; the processor 60, the memory 61 and the communication interface 62 in the base station can be connected through a bus or other means, Figure 15 In an embodiment, a bus connection is taken as an example. The bus represents one or more of several bus structures, including a memory bus or a memory controller, a peripheral bus, a graphics acceleration port, a processor or a local bus using any of the bus structures.

[0165] The memory 61 is a kind of computer readable storage medium, which can be configured to store software programs, computer executable programs and modules, such as program instructions / modules corresponding to the method in the embodiments of the present application. The processor 60 executes at least one function application and data processing of the base station by running the software programs, instructions and modules stored in the memory 61, that is, realizes the transmission method of the control information described above.

[0166] The memory 61 can include a program storage area and a data storage area, wherein the program storage area can store an operating system and at least one application required by a function; the data storage area can store data created according to the use of the terminal and the like. In addition, the memory 61 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state memory device. In some examples, the memory 61 can include a memory disposed remotely with respect to the processor 60, and these remote memories can be connected to the base station through a network. Examples of the above network include but are not limited to the Internet, an intranet, a local area network, a mobile communication network and a combination thereof.

[0167] The communication interface 62 can be configured to receive and send data.

[0168] Figure 16 An embodiment provides a structure schematic diagram of a UE, the UE can be implemented in various forms, and the UE in the present application can include but is not limited to mobile terminal devices such as mobile phones, smart phones, notebook computers, digital broadcast receivers, personal digital assistants (PDA), tablet computers (PAD), portable media players (PMP), navigation devices, vehicle terminal devices, vehicle display terminals, vehicle electronic rearview mirrors and the like, and fixed terminal devices such as digital televisions (TV), desktop computers and the like.

[0169] AsFigure 16 As shown, the UE 50 can include a wireless communication unit 51, an Audio / Video (A / V) input unit 52, a user input unit 53, a sensing unit 54, an output unit 55, a memory 56, an interface unit 57, a processor 58, and a power supply unit 59, etc. Figure 16 The UE is shown as including a number of components, but it is understood that not all of the components are required. More or fewer components can alternatively be implemented.

[0170] In the present embodiment, the wireless communication unit 51 allows the UE 50 to perform radio communication with a base station or a network. The A / V input unit 52 is provided to receive an audio or a video signal. The user input unit 53 can generate key input data to control a number of operations of the UE 50 according to a user input command. The sensing unit 54 detects a current state of the UE 50, a location of the UE 50, a presence or absence of a touch input with respect to the UE 50 by a user, an orientation or acceleration / deceleration of the UE 50, and the like, and generates a command or a signal for controlling the operation of the UE 50. The interface unit 57 serves as an interface through which at least one external device can be connected to the UE 50. The output unit 55 is configured to provide an output signal in a form of visual, audio, and / or tactile feedback. The memory 56 can store software programs, etc. for processing and control operations performed by the processor 58, or can temporarily store data that has been output or is to be output. The memory 56 can include at least one type of storage medium. Also, the UE 50 can cooperate with a network storage device that performs a storage function of the memory 56 through a network connection. The processor 58 generally controls overall operations of the UE 50. The power supply unit 59 receives external power or internal power under the control of the processor 58 and supplies appropriate power required for operating a number of elements and components.

[0171] The processor 58 performs at least one function application and data processing by running a program stored in the memory 56, for example, implements the method provided by the embodiments of the present application.

[0172] The embodiments of the present application also provide a computer readable storage medium, and the computer readable storage medium stores a computer program, and the computer program is executed by a processor to implement the method provided by any of the embodiments of the present application.

[0173] The computer storage medium of the embodiments of the present application can adopt any combination of one or more computer readable media. The computer readable medium can be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium may, for example, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or apparatus, or any combination thereof. The computer readable storage medium includes, but is not limited to, a non-exhaustive list: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an electrically erasable, programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In the present application, the computer readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, device or apparatus.

[0174] The computer readable signal medium can include a data signal propagating in a baseband or as part of a carrier wave propagating through a transmission medium, and bearing computer readable program code. Such a propagating data signal can take many forms, including but not limited to electro-magnetic, optical, or any suitable combination thereof. The computer readable signal medium can also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate or transport program for use by or in connection with an instruction execution system, apparatus or device.

[0175] The program code contained on the computer readable medium can be transmitted by any suitable medium, including but not limited to wireless, wire, cable, radio frequency (RF), or any suitable combination thereof.

[0176] Computer program code for performing the operations of this disclosure can be written in one or more programming languages ​​or a combination of programming languages, including object-oriented programming languages ​​(such as Java, Smalltalk, C++, Ruby, and Go) and conventional procedural programming languages ​​(such as the "C" language or similar programming languages). The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network (including a Local Area Network (LAN) or a Wide Area Network (WAN)), or it can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0177] Those skilled in the art will understand that the term user terminal encompasses any suitable type of wireless user equipment, such as mobile phones, portable data processing devices, portable web browsers, or vehicle-mounted mobile stations.

[0178] Generally, the various embodiments of this application can be implemented in hardware or dedicated circuitry, software, logic, or any combination thereof. For example, some aspects can be implemented in hardware, while others can be implemented in firmware or software that can be executed by a controller, microprocessor, or other computing device, although this application is not limited thereto.

[0179] Embodiments of this application can be implemented by executing computer program instructions through the data processor of a mobile device, for example, in a processor entity, or through hardware, or through a combination of software and hardware. The computer program instructions can be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, status setting data, or source code or object code written in any combination of one or more programming languages.

[0180] Any block diagram of logical flow in the accompanying drawings of this application may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions. The computer program may be stored in memory. The memory may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as, but not limited to, read-only memory (ROM), random access memory (RAM), optical storage devices and systems (Digital Multifunction Discs, DVDs, or CDs), etc. Computer-readable media may include non-transitory storage media. The data processor may be of any type suitable to the local technical environment, such as, but not limited to, general-purpose computers, special-purpose computers, microprocessors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), and processors based on multi-core processor architectures.

Claims

1. A method for transmitting control information, characterized in that, Applied to the first communication node, including: Receive first information sent by the second communication node, wherein the first information is MBS control information, and the first information includes the change cycle of each multicast broadcast service MBS; For the MBS of interest to the first communication node, according to the change period of each MBS of interest, when the system frame and subframe meet the change period condition, the downlink control information (DCI) is parsed in the corresponding time domain, and the control information of the MBS is determined to have changed when the MBS control information change indication is obtained by parsing; wherein, the MBS control information change indication is at the MBS granularity or at the cell granularity. Receive updated MBS control information indicated by the new multicast control channel MCCH in the current cycle or the next cycle, and use the updated MBS control information to receive MBS data streams.

2. The method according to claim 1, characterized in that, The second communication node includes one of the following: a base station; a base station distributed unit.

3. A method for transmitting control information, characterized in that, Applied to the second communication node, including: A first message is sent to the first communication node, wherein the first message is MBS control information. The first message includes the change period of each multicast broadcast service MBS. For the MBS of interest to the first communication node, the change period of the MBS of interest is used when the system frame and subframe meet the change period conditions. The first communication node parses the downlink control information DCI in the corresponding time domain, and determines that the control information of the MBS has changed when the MBS control information change indication is obtained by parsing. This enables the first communication node to receive the updated MBS control information indicated by the new multicast control channel MCCH in the current period or the next period, and to receive the MBS data stream using the updated MBS control information. The MBS control information change indication is at the MBS granularity or at the cell granularity.

4. The method according to claim 3, characterized in that, The second communication node includes one of the following: a base station; a base station distributed unit.

5. A device, characterized in that, include: processor; The processor is used to implement the control information transmission method as described in claim 1 or 2 when executing a computer program; or, The processor is used to implement the control information transmission method as described in claim 3 or 4 when executing a computer program.

6. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the control information transmission method as described in claim 1 or 2, or the control information transmission method as described in claim 3 or 4.

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