CN118301680A

CN118301680A - Information transmission method and communication device

Info

Publication number: CN118301680A
Application number: CN202211696220.3A
Authority: CN
Inventors: 刘旭
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2024-07-05
Also published as: WO2024140691A1

Abstract

The application provides an information transmission method and a communication device, wherein the information transmission method comprises the following steps: receiving pre-configuration information corresponding to m candidate cells respectively, wherein the pre-configuration information is used for configuring at least one transmission configuration indication state TCI-state of the corresponding candidate cells, and m is an integer greater than 0; and receiving first indication information, wherein the first indication information is used for indicating a TCI-state needing to be activated in at least one TCI-state corresponding to a target cell, and the target cell is a target cell needing to be switched to in the m candidate cells. By implementing the application, the service interruption time delay caused by cell switching can be reduced.

Description

Information transmission method and communication device

Technical Field

The present application relates to the field of communications technologies, and in particular, to an information transmission method and a communications device.

Background

The network device may generate different beams pointing in different directions of transmission. In downlink data transmission, when a network device transmits data to a terminal device by using a specific beam, the terminal device needs to be informed of information of the transmission beam adopted by the network device, so that the terminal device can receive the data transmitted by the network device by using a receiving beam corresponding to the transmission beam. Currently, the network device may implement the indication of the transmit beam information by indicating a transmission configuration indication state (Transmission Configuration Indication state, TCI-state). The terminal equipment can determine the used receiving wave beam according to the TCI-state indicated by the network equipment, thereby adopting the corresponding receiving wave beam to receive the data issued by the network equipment. How to apply TCI-state configuration and activation in a handover scenario to reduce service interruption delay caused by handover is a problem to be solved.

Disclosure of Invention

The embodiment of the application provides an information transmission method and a communication device, which can realize the configuration and activation of TCI-state in a switching scene and reduce service interruption time delay caused by cell switching.

In a first aspect, an embodiment of the present application provides an information transmission method, including:

receiving pre-configuration information corresponding to m candidate cells respectively, wherein the pre-configuration information is used for configuring at least one transmission configuration indication state TCI-state of the corresponding candidate cells, and m is an integer greater than 0;

and receiving first indication information, wherein the first indication information is used for indicating a TCI-state needing to be activated in at least one TCI-state corresponding to a target cell, and the target cell is a target cell needing to be switched to in the m candidate cells.

According to the implementation mode, at least one TCI-state is configured for each candidate cell in m candidate cells in advance, when cell switching is carried out, namely, the TCI-state which needs to be activated in at least one TCI-state corresponding to a target cell which needs to be switched to is indicated, the terminal equipment can determine the used wave beam according to the activated TCI-state, and the situation that the terminal equipment is switched to the target cell and the wave beam selection is needed is avoided, so that service interruption time delay caused by switching is reduced.

In one possible implementation, the method further includes:

and receiving cell switching information, wherein the cell switching information is used for indicating switching to the target cell.

According to the method, the target cell indicates through the cell switching information, and when the network side indicates to switch to the target cell, the TCI-state needing to be activated in the target cell is further indicated, so that the network can conveniently use the wave beam corresponding to the activated TCI-state to carry out data transmission after switching, the wave beam selection is not needed, and the service interruption time delay caused by switching is reduced.

In one possible implementation manner, the receiving pre-configuration information corresponding to m candidate cells includes:

Receiving configuration information of candidate cells, wherein the configuration information of the candidate cells comprises configuration information of p candidate cells, the p candidate cells comprise m candidate cells, the configuration information of the p candidate cells comprises pre-configuration information corresponding to the m candidate cells respectively, and the p is larger than or equal to an integer of m.

In this embodiment, the network may configure at least one TCI-state for a part of the configured p candidate cells, thereby reducing signaling overhead.

In one possible implementation, the method further includes:

and sending second indication information, wherein the second indication information is used for indicating the terminal equipment to support the activation of TCI-state when the cell switching is carried out.

According to the implementation mode, the terminal equipment indicates to the network that the terminal equipment supports the activation of the TCI-state when the cell switching is carried out, so that the network is convenient to pre-configure the corresponding TCI-state for each candidate cell of the terminal equipment in advance.

In a second aspect, an embodiment of the present application provides an information transmission method, including:

Transmitting pre-configuration information corresponding to m candidate cells respectively to terminal equipment, wherein the pre-configuration information is used for configuring at least one transmission configuration indication state TCI-state of the corresponding candidate cells, and m is an integer greater than 0;

and sending first indication information to the terminal equipment, wherein the first indication information is used for indicating a TCI-state which needs to be activated in at least one TCI-state corresponding to a target cell, and the target cell is a target cell which needs to be switched to in the m candidate cells.

In one possible implementation, the method further includes:

And sending cell switching information to the terminal equipment, wherein the cell switching information is used for indicating switching to the target cell.

In one possible implementation, the method further includes:

determining q candidate cells, q being an integer greater than or equal to m

Sending a request message to the target network devices respectively corresponding to the q candidate cells, wherein the request message is used for requesting to configure at least one TCI-state of the corresponding candidate cell;

and receiving pre-configuration information corresponding to r candidate cells respectively, wherein r is an integer smaller than or equal to q and larger than or equal to m, the q candidate cells comprise r candidate cells, and the r candidate cells comprise m candidate cells.

According to the implementation mode, a request message can be sent to each candidate cell respectively corresponding to the target network equipment so as to request to configure at least one TCI-state of the corresponding candidate cell, and pre-configuration information corresponding to the candidate cell and sent by the target network equipment is received, so that the configuration of at least one TCI-state corresponding to each candidate cell is realized in advance before switching.

In one possible implementation manner, the sending the pre-configuration information corresponding to each of the m candidate cells to the terminal device includes:

And sending configuration information of candidate cells to the terminal equipment, wherein the configuration information of the candidate cells comprises configuration information of p candidate cells, the p candidate cells comprise m candidate cells, the configuration information of the p candidate cells comprises pre-configuration information corresponding to the m candidate cells respectively, and the p is larger than or equal to an integer of m.

In one possible implementation, the method further includes:

Receiving second indication information, wherein the second indication information is used for indicating terminal equipment to support the activation of TCI-state when cell switching is carried out;

the sending the pre-configuration information corresponding to m candidate cells to the terminal equipment comprises the following steps:

and sending pre-configuration information corresponding to m candidate cells respectively to the terminal equipment according to the second indication information.

In a third aspect, an embodiment of the present application provides an information transmission method, including:

receiving a request message, wherein the request message is used for requesting to configure at least one TCI-state of a candidate cell;

and sending pre-configuration information of the candidate cell, wherein the pre-configuration information is used for configuring at least one transmission configuration indication state TCI-state of the candidate cell.

By implementing the method, the configuration of at least one TCI-state corresponding to each candidate cell in advance can be realized.

In a fourth aspect, embodiments of the present application provide a communication device comprising means for implementing the method in any one of the possible implementations of the first aspect, or comprising means for implementing the method in any one of the possible implementations of the second aspect, or comprising means for implementing the method in any one of the possible implementations of the third aspect.

In a fifth aspect, an embodiment of the present application provides a communication device comprising a processor and a memory, the processor and the memory being interconnected, the memory being for storing a computer program comprising program instructions, the processor being configured to invoke the program instructions to perform a method according to the first aspect or any alternative embodiment of the first aspect, or to perform a method according to the second aspect or any alternative embodiment of the second aspect, or to perform a method according to the third aspect or any alternative embodiment of the third aspect.

In a sixth aspect, embodiments of the present application provide a chip comprising a processor coupled to an interface, the processor and the interface; the interface is for receiving or outputting signals, and the processor is for executing code instructions to perform a method as described in the first aspect or any optional implementation of the first aspect, or to perform a method as described in the second aspect or any optional implementation of the second aspect, or to perform a method as described in the third aspect or any optional implementation of the third aspect.

In a seventh aspect, an embodiment of the present application provides a module apparatus, including a communication module, a power module, a storage module, and a chip module, where: the power supply module is used for providing electric energy for the module equipment; the storage module is used for storing data and/or instructions; the communication module is communicated with external equipment; the chip module is used for calling data and/or instructions stored in the storage module, and the communication module is used for executing the method according to any optional implementation manner of the first aspect or the first aspect, or executing the method according to any optional implementation manner of the second aspect or the second aspect, or executing the method according to any optional implementation manner of the third aspect or the third aspect.

In an eighth aspect, an embodiment of the present application provides a computer readable storage medium storing a computer program comprising program instructions for implementing a method according to the first aspect or any optional implementation of the first aspect, or for implementing a method according to the second aspect or any optional implementation of the second aspect, or for implementing a method according to the third aspect or any optional implementation of the third aspect, when the electronic device executes the program instructions.

In a ninth aspect, embodiments of the present application provide a computer program product comprising a computer program or computer code which, when run on a computer, causes the method of the first aspect or any optional embodiment of the first aspect described above, or is performed in order to implement the method of the second aspect or any optional embodiment of the second aspect, or is performed in order to implement the method of the third aspect or any optional embodiment of the third aspect.

Drawings

Fig. 1a is a schematic structural diagram of a communication system according to an embodiment of the present application;

fig. 1b is a schematic structural diagram of another communication system according to an embodiment of the present application;

fig. 2a is a schematic flow chart of an information transmission method according to an embodiment of the present application;

Fig. 2b is a schematic flow chart of another information transmission method according to an embodiment of the present application;

fig. 3a is an example of an information transmission method provided in an embodiment of the present application;

fig. 3b is another example of an information transmission method provided in an embodiment of the present application;

fig. 4 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a module device according to an embodiment of the present application.

Detailed Description

In the embodiment of the present application, unless otherwise specified, the character "/" indicates that the associated object is one or the relationship. For example, A/B may represent A or B. "and/or" describes an association relationship of an association object, meaning that three relationships may exist. For example, a and/or B may represent: a exists alone, A and B exist together, and B exists alone.

It should be noted that the terms "first," "second," and the like in the embodiments of the present application are used for distinguishing between description and not necessarily for indicating or implying a relative importance or number of features or characteristics in order.

In the embodiments of the present application, "at least one" means one or more, and "a plurality" means two or more. Furthermore, "at least one item(s)" below, or the like, refers to any combination of these items, and may include any combination of single item(s) or plural items(s). For example, at least one (one) of A, B or C may represent: a, B, C, a and B, a and C, B and C, or A, B and C. Wherein each of A, B, C may itself be an element or a collection of one or more elements.

In embodiments of the application, "exemplary," "in some embodiments," "in another embodiment," etc. are used to indicate an example, instance, or illustration. Any embodiment or design described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, the term use of an example is intended to present concepts in a concrete fashion.

"Of", "corresponding (corresponding, relevant)" and "corresponding (corresponding)" in the embodiments of the present application may be sometimes mixed, and it should be noted that the meanings to be expressed are consistent when the distinction is not emphasized. In the embodiments of the present application, communications and transmissions may sometimes be mixed, and it should be noted that, when the distinction is not emphasized, the meaning expressed is consistent. For example, a transmission may include sending and/or receiving, either nouns or verbs.

The equal to that related in the embodiment of the application can be used together with the greater than the adopted technical scheme, can also be used together with the lesser than the adopted technical scheme. It should be noted that when the number is equal to or greater than the sum, the number cannot be smaller than the sum; when the value is equal to or smaller than that used together, the value is not larger than that used together.

Some terms related to the embodiments of the present application are explained below to facilitate understanding by those skilled in the art.

1. Terminal equipment

In the embodiment of the present application, the terminal device is a device with a wireless transceiver function, and may be referred to as a terminal (terminal), a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), an access terminal device, a vehicle-mounted terminal device, an industrial control terminal device, a UE unit, a UE station, a mobile station, a remote terminal device, a mobile device, a UE terminal device, a wireless communication device, a UE agent, or a UE apparatus. The terminal device may be fixed or mobile. It should be noted that the terminal device may support at least one wireless communication technology, such as long term evolution (long term evolution, LTE), new radio, NR, etc. For example, the terminal device may be a mobile phone, a tablet, a desktop, a notebook, a body, a car-mounted terminal, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned (SELF DRIVING), a wireless terminal in teleoperation (remote medical surgery), a wireless terminal in smart grid (SMART GRID), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (SMART CITY), a wireless terminal in smart home (smart home), a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal DIGITAL ASSISTANT, PDA), a handheld device with wireless communication functionality, a computing device or other processing device connected to a wireless modem, a wearable device, a terminal device in a future mobile communication network, or a terminal in a future evolved public mobile network (public land mobile network, PLMN) or the like. In some embodiments of the present application, the terminal device may also be a device with a transceiver function, such as a chip system. The chip system may include a chip and may also include other discrete devices.

2. Network equipment

In the embodiment of the present application, the network device is a device that provides a wireless communication function for the terminal device, and may also be referred to as an access network device, a radio access network (radio access network, RAN) device, or the like. Wherein the network device may support at least one wireless communication technology, e.g., LTE, NR, etc. By way of example, network devices include, but are not limited to: a next generation base station (gNB) in a fifth generation mobile communication system (5 th-generation, 5G), a base station (eNB) in a sixth generation mobile communication system (6 th-generation, 6G), an evolved node B (eNB), a radio network controller (radio network controller, RNC), a Node B (NB), a base station controller (base station controller, BSC), a base transceiver station (base transceiver station, BTS), a home base station (e.g., home evolved node B, or home node B, HNB), a baseband unit (BBU), a transceiver point (TRANSMITTING AND RECEIVING point, TRP), a transmission point (TRANSMITTING POINT, TP), a mobile switching center, and the like. The network device may also be a wireless controller, a centralized unit (centralized unit, CU), and/or a Distributed Unit (DU) in the cloud wireless access network (cloud radio access network, CRAN) scenario, or the network device may be a relay station, an access point, an in-vehicle device, a terminal device, a wearable device, and a network device in future mobile communications or a network device in a future evolved PLMN, etc. In some embodiments, the network device may also be an apparatus, such as a system-on-a-chip, having functionality for providing wireless communication for the terminal device. By way of example, the chip system may include a chip, and may also include other discrete devices.

3、TCI-state

The TCI-state may be used to indicate a quasi co-location (QCL) relationship between two reference signals, and the large scale characteristics of the reference signals with the QCL relationship may be inferred from each other, and the large scale characteristics may include a spatial reception parameter (reception beam) and a spatial transmission parameter (transmission beam). Each TCI-state corresponds to an index of TCI-states, which can uniquely identify a TCI-state. The TCI-state is configured by the network device to each terminal device. For example, the TCI-state may be used to indicate QCL information of a physical downlink control channel (physical downlink control channel, PDCCH)/physical downlink shared channel (physical downlink SHARED CHANNEL, PDSCH), and specifically may be used to indicate which reference signal the DMRS of PDCCH/PDSCH meets the QCL relationship, and then the terminal may determine, through the TCI-state indicated by the network device, which reference signal the DMRS of PDCCH/PDSCH meets the QCL relationship, so as to perform data transmission with spatial parameters (e.g., a receiving beam or a transmitting beam) that are the same as or similar to the spatial parameters of the reference signal.

Referring to fig. 1a, fig. 1a is a schematic structural diagram of a communication system according to an embodiment of the application. The communication system may include, but is not limited to, one or more network devices, one or more terminal devices, such as a source network device, a target network device, and a terminal device as illustrated in fig. 1a, where the network device in fig. 1a is illustrated as a base station, and the terminal device is illustrated as a mobile phone, and the terminal device may establish a wireless link with the network device to perform communication.

In fig. 1a, the source cell in which the terminal device is located is a cell of the source network device, the cell to which the terminal device may be switched is a candidate cell, and the network device to which the candidate cell belongs is a target network device, which may be understood that one or more target network devices may exist. In some scenarios, the source cell and the candidate cell may both belong to a cell under the same network device, which is not limited by the present application.

The devices in the communication system shown in fig. 1a include, but are not limited to, network devices and terminal devices, and may also include other communication devices, and the number and form of the devices shown in fig. 1a are used for illustration and not to limit the embodiments of the present application.

The network device in the embodiment of the present application may include a Centralized Unit (CU) and a Distributed Unit (DU). When the network device exists in the form of CU and DU, as shown in fig. 1b, a schematic structural diagram of another communication system according to an embodiment of the present application is provided. As shown in fig. 1b, the communication system comprises a terminal device, a CU, an S-DU and a T-DU.

In fig. 1b, the source cell in which the terminal device is located may be a cell of an S-DU, the cell to which the terminal device may be switched is a candidate cell, and the DU to which the candidate cell belongs is a T-DU. The CU can control DUs, as shown in FIG. 1b, with S-DUs and T-DUs being communicatively connected to the CU, respectively. It is understood that the S-DU and the T-DU may be connected to different CUs, respectively, and the present application is not limited thereto.

The network elements in the communication system shown in fig. 1b include, but are not limited to, CUs, DUs and terminal devices, and may also include other network elements, and the number and form of the devices shown in fig. 1b are used for illustration and not to limit the embodiments of the present application.

It should be noted that the various aspects of the present application (or referred to as various embodiments) may be implemented independently or may be implemented in combination based on certain inherent relationships. The application is not limited. And various terms and definitions between the various embodiments may be referenced to one another. In each of the embodiments of the application, different implementations may also be implemented in combination or separately.

Fig. 2a is a schematic flow chart of an information transmission method according to an embodiment of the present application, and as shown in fig. 2a, the method may include, but is not limited to, the following steps:

101, the network device sends pre-configuration information corresponding to m candidate cells respectively to the terminal device, wherein the pre-configuration information is used for configuring at least one TCI-state of the corresponding candidate cell, and m is an integer greater than 0. Correspondingly, the terminal equipment receives the pre-configuration information respectively corresponding to m candidate cells sent by the network equipment.

The network device may be a network element corresponding to a source cell where the terminal device is located, for example, the network device may be a source network device (such as a source base station) in fig. 1a or an S-DU in fig. 1 b.

The m candidate cells may be cells to which the terminal device may be handed over. In some embodiments, the m candidate cells may be m candidate cells determined by the communication device according to measurement results of reference signals of a plurality of neighbor cells reported by the terminal device. For example, the reference signals of the plurality of neighboring cells are ranked in order of the measurement results from large to small, and the neighboring cells corresponding to the m reference signals ranked at the top are determined as m candidate cells. In some embodiments, the m candidate cells may also be part of p candidate cells determined by the network device, where p is an integer greater than or equal to 1. The p candidate cells may be determined by the network device according to measurement results of reference signals of a plurality of neighbor cells reported by the terminal device. In other words, the network device pre-configures the TCI-state for some of the p candidate cells, and the other candidate cells of the p candidate cells are not pre-configured with the TCI-state.

The pre-configuration information corresponding to the candidate cell in the embodiment of the application is used for configuring at least one TCI-state corresponding to the candidate cell. For example, there are 3 candidate cells, namely, candidate cell 1, candidate cell 2 and candidate cell 3, and the pre-configuration information of the candidate cell 1 is used to configure at least one TCI-state corresponding to the candidate cell 1, for example, the at least one TCI-state corresponding to the candidate cell 1 includes TCI-states with index values of 1 and 3. The pre-configuration information of the candidate cell 2 is used to configure at least one TCI-state corresponding to the candidate cell 2, for example, the at least one TCI-state corresponding to the candidate cell 2 includes TCI-states with index values of 1 and 2. The pre-configuration information of the candidate cell 3 is used to configure at least one TCI-state corresponding to the candidate cell 3, for example, the at least one TCI-state corresponding to the candidate cell 3 includes TCI-states with index values of 3 and 4.

For example, the pre-configuration information corresponding to each of the m candidate cells may be transmitted to the terminal device through the candidate cell configuration information. The candidate cell configuration information includes configuration information of p candidate cells to be switched by the terminal device. For example, the m candidate cells of the present application may be part of candidate cells or all candidate cells in the p candidate cells determined by the network device, and the configuration information of the candidate cells may include configuration information of the p candidate cells, and further the configuration information of the p candidate cells includes preconfiguration information corresponding to each of the m candidate cells, where a value of p is greater than or equal to a value of m.

102, The network device sends first indication information to the terminal device, where the first indication information is used to indicate a TCI-state that needs to be activated in at least one TCI-state corresponding to a target cell, and the target cell is a target cell that needs to be switched to in m candidate cells. Correspondingly, the terminal equipment receives the first indication information.

In some embodiments, the network device sends cell switching information to the terminal device, where the cell switching information is used to instruct switching to the target cell, and indicates, through the first indication information, a TCI-state that needs to be activated in at least one TCI-state corresponding to the target cell. The cell handover information and the first indication information may be sent to the terminal device through the same message or command, or may be sent to the terminal device through different messages or commands, respectively. It can be appreciated that if the target cell is not a cell of the m candidate cells, in other words, the target cell is not preconfigured with at least one TCI-state, the network device may transmit cell handover information to the terminal device without transmitting the first indication information.

Continuing with the above example where the m candidate cells include candidate cell 1, candidate cell 2, and candidate cell 3, if the target cell to which handover is required is candidate cell 2, at least one TCI-state configured by the network device for the candidate cell 2 includes TCI-states with index values of 1 and 2. Further, the network device indicates to activate the TCI-state with index value of 2 in at least one TCI-state corresponding to the candidate cell 2 through the first indication information.

Further optionally, the terminal device accesses the target cell, and determines a reception beam and/or a transmission beam according to the activated TCI-state, so as to communicate with the target cell by using the determined reception beam and/or transmission beam. Beam selection is avoided after handover to the target cell, thereby reducing service interruption delay due to handover.

In some embodiments, before the step 101 (the network device sends the m candidate cells to the terminal device respectively corresponding to the preconfiguration information), the terminal device may send second indication information to the network device, where the second indication information is used to indicate that the terminal device supports implementing activation of the TCI-state when performing cell handover. The network device sends pre-configuration information corresponding to m candidate cells respectively to the terminal device according to the second indication information, namely pre-configuring at least one TCI-state of the m candidate cells, and when the network device instructs the terminal device to conduct cell switching, if the target cell belongs to a cell in the m candidate cells, the network device instructs the terminal device to conduct cell switching and instructs at least one TCI-state corresponding to the target cell to need activated TCI-state, so that the terminal device can determine a sending wave beam and/or a receiving wave beam according to the activated TCI-state after switching to the target cell, and the sending wave beam and/or the receiving wave beam are used for communicating with the target cell.

For example, the second indication information may be carried in a measurement report message or an RRC message, for example, a message such as RRC reestablishment complete RRCReestablishmentComplete, RRC reconfiguration complete RRCReconfigurationComplete, RRC reestablishment complete RRCResumeComplete, RRC establishment complete RRCSetupComplete; or may be carried in dedicated capability reporting signaling (UECapabilityInformation) or may be carried in auxiliary information (UEAssistanceInformation).

Fig. 2b is a schematic flow chart of another information transmission method according to an embodiment of the present application, and as shown in fig. 2b, the method may include, but is not limited to, the following steps:

The first network device determines q candidate cells 201.

The first network device may be a network element corresponding to a source cell where the terminal device is located, for example, the network element may be a source network device (such as a source base station) in fig. 1a or an S-DU in fig. 1 b.

The q candidate cells may be q candidate cells determined by the first network device according to measurement results of reference signals of a plurality of neighbor cells reported by the terminal device, that is, q is the same as p in the embodiment of fig. 2 a. The q candidate cells may also be candidate cells of the TCI-state that may be configured in advance, which is determined by the first network device, i.e. q candidate cells are part of all candidate cells determined by the first network device, where q is smaller than p. For example, q candidate cells with the best signal quality are determined from the p candidate cells, i.e. the terminal device is most likely to be handed over to the q candidate cells.

202, The first network device sends a request message to the second network device, where the request message is used to request to configure at least one TCI-state of the corresponding candidate cell, and the second network device receives the request message.

203, The second network device sends the pre-configuration information of the candidate cell to the first network device, and correspondingly, the first network device receives the pre-configuration information of the candidate cell.

The second network device may be a network element corresponding to the candidate cell, for example, the network element may be the target network device (such as the target base station) in fig. 1a or the T-DU in fig. 1 b.

The first network device determines network elements corresponding to q candidate cells respectively, that is, determines second network devices corresponding to q candidate cells respectively, and it can be understood that the m candidate cells may correspond to the same second network device or may correspond to a plurality of second network devices. For example, the q candidate cells include candidate cell 1, candidate cell 2, and candidate cell 3, where candidate cell 1 and candidate cell 2 correspond to one second network device, and candidate cell 3 corresponds to another second network device.

The first network device sends a request message to the second network device requesting the second network device to configure at least one TCI-state for the corresponding candidate cell. It can be appreciated that if q candidate cells correspond to a plurality of second network devices, the terminal device needs to send a request message to each second network device. Continuing with the above-mentioned m candidate cells including candidate cell1, candidate cell2 and candidate cell3, candidate cell1 and candidate cell2 correspond to one second network device (for convenience of description, denoted as network device a), candidate cell3 corresponds to another second network device (for convenience of description, denoted as network device b), and the first network device sends a request message to network device a to request configuration of at least one TCI-state for candidate cell1 and candidate cell2, respectively. The first network device sends a request message to network device b requesting that at least one TCI-state be configured for candidate cell 3.

Accordingly, the second network device sends the pre-configuration information of the requested candidate cell to the first network device, where the pre-configuration information is used to configure at least one TCI-state for the candidate cell.

In some embodiments, the number of candidate cells for which the first network device and the second network device request the pre-configuration information may be greater than or equal to the number of candidate cells for which the second network device actually returns the pre-configuration information, e.g. the first network device requests the pre-configuration information of candidate cell 1 and candidate cell 2 from the second network device, i.e. requests to configure at least one TCI-state for candidate cell 1 and candidate cell 2, respectively, but the second network device may actually only return the pre-configuration information of candidate cell 1. For convenience of description, the first network device requests the preconfiguration information of q candidate cells, receives the preconfiguration information of r candidate cells, wherein q is greater than or equal to r, and r is an integer greater than 0.

204, The first network device sends the preconfiguration information corresponding to m candidate cells respectively to the terminal device, wherein m is an integer greater than or equal to 1.

In some embodiments, the first network device receives the preconfiguration information corresponding to each of the r candidate cells from the second network device, and the first network device sends the preconfiguration information corresponding to each of the m candidate cells to the terminal device, where m may be less than or equal to r. If m is equal to r, the first network device sends all the received preconfiguration information corresponding to r candidate cells to the terminal device. If m is smaller than r, the first network device sends the received preconfiguration information of partial candidate cells in the preconfiguration information corresponding to the r candidate cells respectively to the terminal device.

205, The first network device sends first indication information to the terminal device, where the first indication information is used to indicate a TCI-state that needs to be activated in at least one TCI-state corresponding to a target cell, and the target cell is a target cell that needs to be switched to in m candidate cells. Correspondingly, the terminal equipment receives the first indication information.

In the embodiment of the present application, steps 204 to 205 refer to steps 101 to 102 of fig. 2a, and are not described herein.

In the embodiment of the application, after m candidate cells are determined, the first network device requests to configure at least one TCI-state corresponding to each candidate cell from the second network device corresponding to each candidate cell, and when the cell switching is performed, the first network device indicates that the TCI-state which needs to be activated in at least one TCI-state corresponding to the target cell which needs to be switched to, the terminal device can determine the used wave beam according to the activated TCI-state, so that the terminal device is prevented from switching to the target cell and further needs to perform wave beam selection, and the service interruption time delay caused by switching is reduced.

As shown in fig. 3a, an example of an information transmission method provided by an embodiment of the present application; wherein fig. 1a is a system architecture diagram to which the embodiment is applied, as shown in fig. 3a, the information transmission method includes, but is not limited to, the following steps:

301, the terminal device measures reference signals of a plurality of adjacent cells, performs filtering processing on the measured values through a layer 3 to obtain a layer 3 filtering result of each adjacent cell, and reports the layer 3 filtering result of at least one adjacent cell.

The terminal device may perform layer 1 measurement on reference signals of each neighboring cell in the plurality of neighboring cells in a preconfigured time range, to obtain at least one measurement value corresponding to each neighboring cell, where layer 1 may include a physical layer or a data link layer. Further, for each neighboring cell, at least one measured value of the neighboring cell is filtered through layer 3, for example, the at least one measured value is weighted and summed to obtain a layer 3 filtering result of the neighboring cell. And further reporting the layer 3 filtering result of at least one neighbor cell in the plurality of neighbor cells.

302, The source network device determines q candidate cells according to the layer 3 filtering result of at least one neighboring cell.

The source network device determines q candidate cells according to the layer 3 filtering result of at least one neighboring cell, for example, the layer 3 filtering result of the q candidate cells is the optimal preset number of candidate cells in the at least one neighboring cell, and the preset number can be configured by the network device.

303, The source network device sends a request message to the target network device, where the request message is used to request to configure at least one TCI-state for the corresponding candidate cell.

Specifically, the source network device may determine that q candidate cells respectively correspond to the target network devices, where the q candidate cells may correspond to the same target network device or may correspond to multiple target network devices. If q candidate cells correspond to a plurality of target network devices, a request message may be sent to each target network device to request to obtain the preconfiguration information of the candidate cells corresponding to the target network device.

304, The target network device sends the source network device the pre-configuration information of the candidate cell.

305, The source network device sends RRC configuration information to the terminal device, where the RRC configuration information includes pre-configuration information corresponding to m candidate cells, respectively.

Optionally, the RRC configuration information may include configuration information of q candidate cells determined by the source network device, where the q candidate cells include the m candidate cells, and q is an integer greater than or equal to m.

306, The terminal equipment measures the reference signals of the candidate cells and reports the measurement results.

The terminal equipment performs layer 1 measurement on each candidate cell configured by the source network equipment to obtain a layer 1 measurement result, and reports the layer 1 measurement result. Specifically, alternatively, the terminal device may measure the synchronization signals corresponding to the beams of each candidate cell, so as to obtain a measurement result.

307, The source network device sends cell switching information and first indication information to the terminal device, where the cell switching information is used to indicate switching to the target cell, and the first indication information is used to indicate a TCI-state that needs to be activated in at least one TCI-state corresponding to the target cell.

The source network equipment determines that the terminal equipment needs to be switched to a target cell in m candidate cells according to measurement results of candidate cells reported by the terminal equipment, and sends cell switching information to the terminal equipment, the switching to the target cell is indicated, and meanwhile, the source network equipment sends first indication information to the terminal equipment, so that at least one TCI-state which corresponds to the target cell and needs to be activated is indicated. It can be appreciated that if the target cell is not a cell of the m candidate cells, i.e. the target cell is not preconfigured with at least one TCI-state, the source network device only transmits the cell handover information without transmitting the first indication information.

308, The terminal device accesses the target cell and communicates with the target cell.

The terminal equipment accesses the target cell, and determines a receiving beam and/or a transmitting beam according to the activated TCI-state, so that the determined receiving beam and/or transmitting beam is adopted to communicate with the target cell. Beam selection is avoided after handover to the target cell, thereby reducing service interruption delay due to handover.

As shown in fig. 3b, another example of the information transmission method provided by the embodiment of the present application is shown; wherein fig. 1b is a system architecture diagram to which this embodiment is applied, as shown in fig. 3b, the information transmission method includes, but is not limited to, the following steps:

401, the terminal device measures reference signals of a plurality of adjacent cells, and carries out filtering treatment on the measured values through a layer 3 to obtain a layer 3 filtering result of each adjacent cell, and reports the layer 3 filtering result of at least one adjacent cell.

The cu determines q candidate cells based on the layer 3 filtering results of at least one neighbor cell 402.

The CU determines q candidate cells according to a layer 3 filtering result of at least one neighboring cell, for example, the layer 3 filtering result of the q candidate cells is an optimal preset number of candidate cells in the at least one neighboring cell, where the preset number is configurable by the network device.

403, The cu sends a request message to the T-DU requesting configuration of at least one TCI-state for the corresponding candidate cell.

In particular, the CU may determine that q candidate cells respectively correspond to a T-DU, and q candidate cells may correspond to the same T-DU or may correspond to a plurality of T-DUs. If q candidate cells correspond to a plurality of T-DUs, a request message may be sent to each T-DU to request acquisition of pre-configuration information of the candidate cell corresponding to the T-DU.

404, The t-DU sends the pre-configuration information of the candidate cell to the S-DU.

The T-DU may send the pre-configuration information of the corresponding candidate cell to the CU and then to the S-DU by the CU.

And 405, the S-DU sends RRC configuration information to the terminal equipment, wherein the RRC configuration information comprises pre-configuration information respectively corresponding to the m candidate cells, and the pre-configuration information is used for configuring at least one TCI-state of the corresponding candidate cells.

And 406, the terminal equipment measures the reference signals of the candidate cells and reports the measurement results.

And the terminal equipment performs layer 1 measurement on each candidate cell configured by the S-DU to obtain a layer 1 measurement result and reports the layer 1 measurement result. Specifically, alternatively, the terminal device may measure the synchronization signals corresponding to the beams of each candidate cell, so as to obtain a measurement result.

407, The s-DU sends cell handover information and first indication information to the terminal device, where the cell handover information is used to indicate handover to the target cell, and the first indication information is used to indicate a TCI-state that needs to be activated in at least one TCI-state corresponding to the target cell.

The S-DU determines that the terminal equipment needs to be switched to a target cell in m candidate cells according to measurement results of candidate cells reported by the terminal equipment, and sends cell switching information to the terminal equipment, the switching to the target cell is indicated, and meanwhile, the S-DU sends first indication information to the terminal equipment, so that the TCI-state which needs to be activated in at least one TCI-state corresponding to the target cell is indicated. It can be appreciated that if the target cell is not a cell of the m candidate cells, i.e., the target cell is not preconfigured with at least one TCI-state, the S-DU transmits only the cell handover information without transmitting the first indication information.

408, The terminal device accesses the target cell and communicates with the target cell.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a communication device according to an embodiment of the application. The communication device 100 shown in fig. 4 may include a communication unit 110.

In one possible design, the communication device may be a terminal device, or a device in a terminal device, for example, may be a chip or a chip module in the terminal device, or may be a device that can be matched with the terminal device for use. Wherein:

Illustratively, the communication unit 110 is configured to receive pre-configuration information corresponding to m candidate cells, where the pre-configuration information is used to configure at least one transmission configuration indication state TCI-state of the corresponding candidate cell, and m is an integer greater than 0;

The communication unit 110 is further configured to receive first indication information, where the first indication information is used to indicate a TCI-state that needs to be activated in at least one TCI-state corresponding to a target cell, and the target cell is a target cell that needs to be switched to in the m candidate cells.

The communication unit 110 is further configured to receive cell handover information, which is used to instruct handover to the target cell.

The communication unit 110 is specifically configured to receive configuration information of candidate cells, where the configuration information of the candidate cells includes configuration information of p candidate cells, the p candidate cells include the m candidate cells, the configuration information of the p candidate cells includes pre-configuration information corresponding to the m candidate cells, and the p is greater than or equal to an integer of m.

The communication unit 110 is further configured to send second indication information, where the second indication information is used to indicate that the terminal device supports activation of the TCI-state when performing a cell handover.

The relevant content of the embodiment can be referred to the relevant content of the method embodiment. And will not be described in detail herein.

In one possible design, the communication device may be a network device, or may be a device in the network device, for example, may be a chip or a chip module in the network device, or may be a device that can be matched with the network device for use. Wherein:

A communication unit 110, configured to send pre-configuration information corresponding to each of m candidate cells to a terminal device, where the pre-configuration information is used to configure at least one transmission configuration indication state TCI-state of the corresponding candidate cell, and m is an integer greater than 0;

The communication unit 110 is further configured to send first indication information to the terminal device, where the first indication information is used to indicate a TCI-state that needs to be activated in at least one TCI-state corresponding to a target cell, and the target cell is a target cell that needs to be switched to in the m candidate cells.

The communication unit 110 is further configured to send cell handover information to the terminal device, where the cell handover information is used to instruct handover to the target cell.

The communication device further comprises a processing unit, wherein the processing unit is used for determining q candidate cells, and q is an integer greater than or equal to m;

The communication unit 110 is further configured to send a request message to the target network devices respectively corresponding to the q candidate cells, where the request message is used to request to configure at least one TCI-state of the corresponding candidate cell;

The communication unit 110 is further configured to receive pre-configuration information corresponding to r candidate cells, where r is an integer less than or equal to q and greater than or equal to m, and the q candidate cells include the r candidate cells, and the r candidate cells include the m candidate cells.

The communication unit 110 is further configured to receive second indication information, where the second indication information is used to indicate that the terminal device supports activation of the TCI-state when performing cell handover;

The communication unit 110 is specifically configured to send pre-configuration information corresponding to each of the m candidate cells to the terminal device according to the second indication information.

a communication unit 110 for receiving a request message for requesting configuration of at least one TCI-state of a candidate cell;

The communication unit 110 is further configured to send pre-configuration information of the candidate cell, where the pre-configuration information is used to configure at least one transmission configuration indication state TCI-state of the candidate cell.

Referring to fig. 5, fig. 5 is a schematic structural diagram of another communication device according to an embodiment of the present application, which is configured to implement the functions of the terminal device in fig. 2a to 3 b. The communication apparatus 400 may be a terminal device or an apparatus for a terminal device. The means for the terminal device may be a chip system or a chip within the terminal device. The chip system may be composed of a chip or may include a chip and other discrete devices.

The communication means may also be used to implement the functions of the network device of fig. 2a to 3b described above. The communication apparatus 400 may be a network device or an apparatus for a network device. The means for the network device may be a system-on-chip or a chip within the network device. The chip system may be composed of a chip or may include a chip and other discrete devices.

The communication apparatus 400 includes at least one processor 420 configured to implement a data processing function of a terminal device or a network device in the method provided by the embodiment of the present application. The communication apparatus 400 may further include a communication interface 410, configured to implement a transceiving operation of a terminal device or a network device in the method provided by the embodiment of the present application. In an embodiment of the present application, the Processor 420 may be a central processing unit (Central Processing Unit, CPU), which may also be other general purpose processors, digital signal processors (DIGITAL SIGNAL processors, DSPs), application SPECIFIC INTEGRATED Circuits (ASICs), off-the-shelf Programmable gate arrays (Field-Programmable GATE ARRAY, FPGA) or other Programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. In an embodiment of the application, communication interface 410 may be a transceiver, circuit, bus, module, or other type of communication interface for communicating with other devices over a transmission medium. For example, the communication interface 410 is used to enable devices in the communication device 400 to communicate with other devices. The processor 420 receives and transmits data using the communication interface 410 and is used to implement the methods described in the above method embodiments in fig. 2 a-3 b.

The communication device 400 may also include at least one memory 430 for storing program instructions and/or data. Memory 430 is coupled to processor 420. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, which may be in electrical, mechanical, or other forms for information interaction between the devices, units, or modules. Processor 420 may operate in conjunction with memory 430. Processor 420 may execute program instructions stored in memory 430. At least one of the at least one memory may be included in the processor.

When the communication device 400 is powered on, the processor 420 may read the software program in the memory 430, interpret and execute instructions of the software program, and process data of the software program. When data needs to be transmitted wirelessly, the processor 420 performs baseband processing on the data to be transmitted, and outputs a baseband signal to a radio frequency circuit (not shown in fig. 5), and the radio frequency circuit performs radio frequency processing on the baseband signal and then transmits the radio frequency signal outwards in the form of electromagnetic waves through an antenna. When data is transmitted to the communication device 400, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 420, and the processor 420 converts the baseband signal into data and processes the data.

In another implementation, the rf circuitry and antenna may be provided separately from the baseband processing processor 420, for example, in a distributed scenario, the rf circuitry and antenna may be remotely located from the communication device.

The specific connection medium between the communication interface 410, the processor 420, and the memory 430 is not limited in the embodiment of the present application. In the embodiment of the present application, the memory 430, the processor 420 and the communication interface 410 are connected through the bus 440 in fig. 5, where the bus is indicated by a thick line in fig. 5, and the connection manner between other components is only schematically illustrated, but not limited thereto. The buses may be classified as address buses, data buses, control buses, etc. For ease of illustration, only one thick line is shown in fig. 5, but not only one bus or one type of bus.

When the communication device 400 is specifically used for a terminal apparatus, for example, when the communication device 400 is specifically a chip or a chip system, the output or the received signal of the communication interface 410 may be a baseband signal. When the communication apparatus 400 is specifically a terminal device, the radio frequency signal may be output or received by the communication interface 410.

It should be noted that, the communication device may execute the steps related to the terminal device or the network device in the foregoing method embodiment, and the implementation manner provided by each step may be referred to specifically, which is not described herein again.

For each device, product, or application to or integrated with a communication device, each module included in the device may be implemented by hardware such as a circuit, and different modules may be located in the same component (e.g., a chip, a circuit module, etc.) or different components in the terminal, or at least some modules may be implemented by using a software program, where the software program runs on a processor integrated inside the terminal, and the remaining (if any) some modules may be implemented by hardware such as a circuit.

The memory may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an erasable programmable ROM (erasable PROM, EPROM), an electrically erasable programmable ROM (ELECTRICALLY EPROM, EEPROM), or a flash memory, among others. The volatile memory may be random access memory (random access memory, RAM) which acts as external cache memory. By way of example, and not limitation, many forms of random access memory (random access memory, RAM) are available, such as static random access memory (STATIC RAM, SRAM), dynamic random access memory (dynamic random access memory, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (double DATA RATE SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (ENHANCED SDRAM, ESDRAM), synchronous link dynamic random access memory (SYNCHLINK DRAM, SLDRAM), and direct memory bus random access memory (direct rambus RAM, DR RAM).

The embodiment of the application provides a chip. The chip comprises: a processor and a memory. Wherein the number of processors may be one or more and the number of memories may be one or more. The processor, by reading the instructions and data stored on the memory, can perform the information transfer method shown in fig. 2 a-3 b and the steps performed by the related embodiments described above.

As shown in fig. 6, fig. 6 is a schematic structural diagram of a module device according to an embodiment of the present application. The module device 500 may perform the steps related to the terminal device or the network device in the foregoing method embodiment, where the module device 500 includes: a communication module 510, a power module 520, a memory module 530, and a chip module 540. Wherein, the power module 520 is used for providing power for the module equipment; the storage module 530 is used for storing data and/or instructions; the communication module 510 is used for communicating with external equipment; the chip module 540 is used to call the data and/or instructions stored in the storage module 530, and in combination with the communication module 510, the information transmission method shown in fig. 2 a-3 b and the steps performed by the related embodiments can be performed.

The embodiment of the application also provides a computer readable storage medium. The computer readable storage medium stores a computer program comprising program instructions which, when executed by an electronic device, implement the steps performed by the terminal device or the steps performed by the network device in the information transmission method shown in fig. 2 a-3 b.

The computer readable storage medium may be an internal storage unit of the terminal device or the network device according to any of the foregoing embodiments, for example, a hard disk or a memory of the device. The computer readable storage medium may also be an external storage device of the terminal device or network device, such as a plug-in hard disk, a smart memory card (SMART MEDIA CARD, SMC), a Secure Digital (SD) card, a flash memory card (FLASH CARD) or the like, which are provided on the device. Further, the computer-readable storage medium may also include both an internal storage unit of the terminal device or the network device and an external storage device. The computer-readable storage medium is used to store the computer program and other programs and data required by the terminal device or network device. The computer-readable storage medium may also be used to temporarily store data that has been output or is to be output. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more sets of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., high-density digital video disc (digital video disc, DVD)), or a semiconductor medium. The semiconductor medium may be a solid state disk.

With respect to each of the apparatuses and each of the modules/units included in the products described in the above embodiments, it may be a software module/unit, a hardware module/unit, or a software module/unit, and a hardware module/unit. For example, for each device or product applied to or integrated on a chip, each module/unit included in the device or product may be implemented in hardware such as a circuit, or at least some modules/units may be implemented in software program, where the software program runs on a processor integrated inside the chip, and the remaining (if any) part of modules/units may be implemented in hardware such as a circuit; for each device and product applied to or integrated in the chip module, each module/unit contained in the device and product can be realized in a hardware manner such as a circuit, different modules/units can be located in the same component (such as a chip, a circuit module and the like) or different components of the chip module, or at least part of the modules/units can be realized in a software program, the software program runs on a processor integrated in the chip module, and the rest (if any) of the modules/units can be realized in a hardware manner such as a circuit; for each device and product applied to or integrated in the data acquisition node, each module/unit contained in each device and product may be implemented in hardware such as a circuit, different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components in the terminal, or at least part of the modules/units may be implemented in a software program, where the software program runs on a processor integrated in the data acquisition node, and the rest (if any) of the modules/units may be implemented in hardware such as a circuit.

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center by wired or wireless means.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

In the several embodiments provided in the present application, it should be understood that the disclosed method, apparatus and system may be implemented in other manners. For example, the device embodiments described above are merely illustrative; for example, the division of the units is only one logic function division, and other division modes can be adopted in actual implementation; for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

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

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may be physically included separately, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in hardware plus software functional units.

The integrated units implemented in the form of software functional units described above may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a gateway node, etc.) to perform part of the steps of the method according to the embodiments of the present invention.

Those skilled in the art will appreciate that implementing all or part of the above-described methods in accordance with the embodiments may be accomplished by way of a computer program stored on a computer readable storage medium, which when executed may comprise the steps of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a random-access Memory (Random Access Memory, RAM), or the like.

The above disclosure is illustrative of a preferred embodiment of the present application, and it is not to be construed as limiting the scope of the application, but rather as providing for the full or partial flow of the solution to the above-described embodiment, and equivalent variations according to the appended claims, will be apparent to those skilled in the art.

Claims

1. An information transmission method, comprising:

2. The method of claim 1, wherein the method further comprises:

3. The method according to claim 1 or 2, wherein the receiving the pre-configuration information corresponding to each of the m candidate cells comprises:

4. The method of claim 2, wherein the method further comprises:

5. An information transmission method, comprising:

6. The method of claim 5, wherein the method further comprises:

7. The method of claim 5 or 6, wherein the method further comprises:

Determining q candidate cells, wherein q is an integer greater than or equal to m;

8. The method of claim 6, wherein the method further comprises:

9. An information transmission method, comprising:

10. A communication device, comprising:

a communication unit, configured to receive pre-configuration information corresponding to m candidate cells, where the pre-configuration information is used to configure at least one transmission configuration indication state TCI-state of the corresponding candidate cell, and m is an integer greater than 0;

the communication unit is further configured to receive first indication information, where the first indication information is used to indicate a TCI-state that needs to be activated in at least one TCI-state corresponding to a target cell, and the target cell is a target cell that needs to be switched to in the m candidate cells.

11. A communication device, comprising:

A communication unit, configured to send pre-configuration information corresponding to m candidate cells respectively to a terminal device, where the pre-configuration information is used to configure at least one transmission configuration indication state TCI-state of the corresponding candidate cell, and m is an integer greater than 0;

The communication unit is further configured to send first indication information to the terminal device, where the first indication information is used to indicate a TCI-state that needs to be activated in at least one TCI-state corresponding to a target cell, and the target cell is a target cell that needs to be switched to in the m candidate cells.

12. A communication device, comprising:

A communication unit configured to receive a request message for requesting configuration of at least one TCI-state of a candidate cell;

the communication unit is further configured to send pre-configuration information of the candidate cell, where the pre-configuration information is used to configure at least one transmission configuration indication state TCI-state of the candidate cell.

13. A communication device comprising a processor and a memory, the processor and the memory being interconnected, wherein the memory is adapted to store a computer program, the computer program comprising program instructions, the processor invoking the program instructions to perform the method according to any of claims 1-4, or to perform the method according to any of claims 5-8, or to perform the method according to claim 9.

14. A chip comprising a processor and an interface, the processor and the interface coupled; the interface is for receiving or outputting signals, and the processor is for executing code instructions to perform the method of any one of claims 1-4, or to perform the method of any one of claims 5-8, or to perform the method of claim 9.

15. The utility model provides a module equipment, its characterized in that, module equipment includes communication module, power module, storage module and chip module, wherein:

the power supply module is used for providing electric energy for the module equipment;

The storage module is used for storing data and/or instructions;

the communication module is used for communicating with external equipment;

The chip module is configured to invoke the data and/or instructions stored in the memory module, and in combination with the communication module, perform the method according to any of claims 1-4, or perform the method according to any of claims 5-8, or perform the method according to claim 9.

16. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program comprising program instructions which, when executed by an electronic device, implement the method of any one of claims 1-4, or the method of any one of claims 5-8, or perform the method of claim 9.