WO2024092767A1

WO2024092767A1 - Information receiving method and device, and information sending method and device

Info

Publication number: WO2024092767A1
Application number: PCT/CN2022/130029
Authority: WO
Inventors: 张健; 贾美艺; 秋元阳介
Original assignee: 富士通株式会社; 张健; 贾美艺
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2024-05-10

Abstract

Embodiments of the present application provide an information receiving method and device, and an information sending method and device. The information receiving method comprises: receiving first indication information, and when the first indication information indicates a transmission configuration indication (TCI) state associated with a second cell, determining to execute one of the following actions: upon second indication information for instructing to hand over from a first cell to the second cell is received, applying the TCI state to the second cell and applying the TCI state to the first cell, and upon the second indication information is received, applying the TCI state to the second cell.

Description

Information receiving and sending method and device

Technical Field

The embodiments of the present application relate to the field of communication technologies.

Background technique

The 3GPP standardization organization has carried out standardization work related to Inter-Cell Beam Management (ICBM) during the standardization process of Release 17 (Rel-17). Among them, terminal devices in Rel-17 can use the beams of non-serving cells, but do not switch to non-serving cells.

It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present application and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because these solutions are described in the background technology part of the present application.

Summary of the invention

Rel-17 standardizes Inter-Cell Beam Management (ICBM). ICBM includes measurement, reporting and beam indication. For measurement, the terminal device is able to perform L1-RSRP measurement based on the SSB (Synchronization Signal and Physical Broadcast Channel (PBCH) block) of the non-serving cell. For reporting, the terminal device reports the L1-RSRP measurement result to the network device. For beam indication, the network device can indicate the transmission configuration indication (TCI) state associated with the non-serving cell to the terminal device. In this way, the terminal device can use the beam of the non-serving cell, for example, use the beam to send information to the non-serving cell or receive information from the non-serving cell. Although the terminal device is able to use the beam of the non-serving cell, the serving cell of the terminal device does not change, that is, the terminal device will not switch to the non-serving cell through the cell switching process. Therefore, the terminal device is still within the bandwidth of the serving cell, and based on the relevant configuration of the serving cell, the indicated TCI state associated with the non-serving cell is applied on the serving cell.

Release 18 (Rel-18) will study L1/L2 based mobility. For L1/L2 based mobility, the goal is to reduce the time required for handover interruption, so as to switch from the serving cell to the candidate cell faster. Handover interruption refers to the time from the terminal device receiving the cell handover command to the first uplink or downlink communication between the terminal device and the switched cell. Compared with the traditional cell handover based on L3 signaling, cell handover based on L1/L2 signaling can further reduce the time required for terminal handover. To achieve L1/L2 based cell handover, the terminal device needs to measure and report the candidate cell, and the network device needs to indicate the beam to be used after the handover to the terminal device. For ICBM of Rel-17, the terminal device does not need to perform cell handover. For L1/L2 based mobility of Rel-18, the terminal device needs to perform cell handover and switch to the candidate cell (also called the target cell). Due to this major difference, measurements, reporting and beam indication in Rel-18 may need to be designed differently.

The inventors found that reducing the handover interruption time is an important goal pursued by Rel-18 L1/L2 based mobility research. To this end, the terminal device needs to quickly switch to the candidate cell and quickly apply the beam of the candidate cell (TCI state). At present, how to apply the beam during the cell handover process is still an open problem.

In response to at least one of the above problems, an embodiment of the present application provides a method and apparatus for receiving and sending information. After receiving a TCI state indication, the terminal device determines to apply the TCI state before a cell switch indication, or to apply the TCI state after a cell switch indication. As a result, the terminal device can reasonably apply the beam during the cell switch process, avoiding ambiguity between the network device and the terminal device on when to apply the TCI state, which helps the terminal device to quickly apply the TCI state after the cell switch and reduce the switching interruption time.

According to one aspect of an embodiment of the present application, there is provided an information receiving method, which is applied to a terminal device, wherein the method includes:

receiving first indication information,

In a case where the first indication information indicates a transmission configuration indication state (TCI state) associated with the second cell, determining to perform one of the following actions:

After receiving second indication information for indicating switching from the first cell to the second cell, applying the TCI state on the second cell, and

Apply the TCI state on the first cell, and after receiving the second indication information, apply the TCI state on the second cell.

According to another aspect of an embodiment of the present application, there is provided an information sending method, which is applied to a network device, wherein the method includes:

Sending first indication information so that the terminal device determines to perform one of the following actions when the first indication information indicates a transmission configuration indication state (TCI state) associated with the second cell:

According to another aspect of an embodiment of the present application, there is provided an information receiving device, which is configured in a terminal device, and the information receiving device includes:

A receiving unit, which receives first indication information,

A determining unit, which, when the first indication information indicates a transmission configuration indication state (TCI state) associated with the second cell, determines to perform one of the following actions:

According to another aspect of an embodiment of the present application, there is provided an information sending device, which is configured in a network device, wherein the device includes:

A sending unit, which sends first indication information so that the terminal device determines to perform one of the following actions when the first indication information indicates a transmission configuration indication state (TCI state) associated with the second cell:

One of the beneficial effects of the embodiment of the present application is that after receiving the TCI state indication, the terminal device determines to apply the TCI state before the cell switch indication, or to apply the TCI state after the cell switch indication. As a result, the terminal device can reasonably apply the beam during the cell switching process, avoiding ambiguity between the network device and the terminal device on when to apply the TCI state, which helps the terminal device to quickly apply the TCI state after the cell switching and reduce the switching interruption time.

With reference to the following description and accompanying drawings, the specific embodiments of the present application are disclosed in detail, indicating the way in which the principles of the present application can be adopted. It should be understood that the embodiments of the present application are not limited in scope. Within the scope of the spirit and clauses of the appended claims, the embodiments of the present application include many changes, modifications and equivalents.

Features described and/or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

It should be emphasized that the term “include/comprises” when used herein refers to the presence of features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps or components.

BRIEF DESCRIPTION OF THE DRAWINGS

The elements and features described in one figure or one implementation of the present application embodiment may be combined with the elements and features shown in one or more other figures or implementations. In addition, in the accompanying drawings, similar reference numerals represent corresponding parts in several figures and can be used to indicate corresponding parts used in more than one implementation.

FIG1 is a schematic diagram of a communication system according to an embodiment of the present application;

FIG2 is a schematic diagram of a signaling sending and receiving process according to an embodiment of the present application;

FIG3 is a schematic diagram of an information receiving method according to an embodiment of the present application;

FIG4 is another schematic diagram of the signaling sending and receiving process according to an embodiment of the present application;

FIG5 is another schematic diagram of the signaling sending and receiving process according to an embodiment of the present application;

FIG6 is another schematic diagram of the signaling sending and receiving process according to an embodiment of the present application;

FIG6a is a schematic diagram of frequency resources of a first cell and a second cell according to an embodiment of the present application;

FIG7 is another schematic diagram of the signaling sending and receiving process according to an embodiment of the present application;

FIG8 is another schematic diagram of the signaling sending and receiving process according to an embodiment of the present application;

FIG9 is a schematic diagram of an information receiving device according to an embodiment of the present application;

FIG10 is a schematic diagram of an information sending device according to an embodiment of the present application;

FIG11 is a schematic diagram of the structure of a terminal device according to an embodiment of the present application;

FIG. 12 is a schematic diagram of a network device according to an embodiment of the present application.

Detailed ways

With reference to the accompanying drawings, the above and other features of the present application will become apparent through the following description. In the description and the accompanying drawings, specific embodiments of the present application are specifically disclosed, which show some embodiments in which the principles of the present application can be adopted. It should be understood that the present application is not limited to the described embodiments. On the contrary, the present application includes all modifications, variations and equivalents falling within the scope of the attached claims.

In the embodiments of the present application, the terms "first", "second", etc. are used to distinguish different elements from the title, but do not indicate the spatial arrangement or time order of these elements, etc., and these elements should not be limited by these terms. The term "and/or" includes any one and all combinations of one or more of the associated listed terms. The terms "comprising", "including", "having", etc. refer to the existence of the stated features, elements, components or components, but do not exclude the existence or addition of one or more other features, elements, components or components.

In the embodiments of the present application, the singular forms "a", "the", etc. include plural forms and should be broadly understood as "a kind" or "a type" rather than being limited to the meaning of "one"; in addition, the term "said" should be understood to include both singular and plural forms, unless the context clearly indicates otherwise. In addition, the term "according to" should be understood as "at least in part according to...", and the term "based on" should be understood as "at least in part based on...", unless the context clearly indicates otherwise.

In an embodiment of the present application, the term "communication network" or "wireless communication network" may refer to a network that complies with any of the following communication standards, such as Long Term Evolution (LTE), enhanced Long Term Evolution (LTE-A), Wideband Code Division Multiple Access (WCDMA), High-Speed Packet Access (HSPA), and the like.

Furthermore, communication between devices in the communication system may be carried out according to communication protocols of any stage, such as but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and 5G, New Radio (NR), etc., and/or other communication protocols currently known or to be developed in the future.

In the embodiments of the present application, the term "network device" refers to, for example, a device in a communication system that connects a terminal device to a communication network and provides services for the terminal device. The network device may include, but is not limited to, the following devices: base station (BS), access point (AP), transmission reception point (TRP), broadcast transmitter, mobile management entity (MME), gateway, server, radio network controller (RNC), base station controller (BSC), etc.

Among them, base stations may include but are not limited to: Node B (NodeB or NB), evolved Node B (eNodeB or eNB) and 5G base station (gNB), etc., and may also include remote radio heads (RRH, Remote Radio Head), remote radio units (RRU, Remote Radio Unit), relays or low-power nodes (such as femeto, pico, etc.). And the term "base station" may include some or all of their functions, and each base station can provide communication coverage for a specific geographical area. The term "cell" can refer to a base station and/or its coverage area, depending on the context in which the term is used.

In the embodiments of the present application, the term "user equipment" (UE) or "terminal equipment" (TE) refers to, for example, a device that accesses a communication network through a network device and receives network services. The terminal device may be fixed or mobile, and may also be referred to as a mobile station (MS), a terminal, a subscriber station (SS), an access terminal (AT), a station, and the like.

Among them, terminal devices may include but are not limited to the following devices: cellular phones, personal digital assistants (PDA, Personal Digital Assistant), wireless modems, wireless communication devices, handheld devices, machine-type communication devices, laptop computers, cordless phones, smart phones, smart watches, digital cameras, etc.

For another example, in scenarios such as the Internet of Things (IoT), the terminal device can also be a machine or device for monitoring or measuring, such as but not limited to: machine type communication (MTC) terminal, vehicle-mounted communication terminal, device to device (D2D) terminal, machine to machine (M2M) terminal, and so on.

In addition, the term "network side" or "network device side" refers to one side of the network, which may be a base station, or may include one or more network devices as above. The term "user side" or "terminal side" or "terminal device side" refers to one side of the user or terminal, which may be a UE, or may include one or more terminal devices as above. Unless otherwise specified herein, "device" may refer to either a network device or a terminal device.

The following describes the scenarios of the embodiments of the present application through examples, but the present application is not limited thereto.

FIG1 is a schematic diagram of a communication system of an embodiment of the present application, schematically illustrating a situation taking a terminal device and a network device as an example. As shown in FIG1 , a communication system 100 may include a first network device 101, a second network device 102, and a terminal device 103; for simplicity, FIG1 only takes two network devices and one terminal device as an example for illustration, but the embodiment of the present application is not limited thereto. For example, the first network device 101 is a serving cell of the terminal device 103, and the second network device 102 is a non-serving cell of the terminal device 103; or, the first network device 101 is a primary serving cell of the terminal device 103, and the second network device 102 is a secondary serving cell of the terminal device 103; or, the first network device 101 is a source cell of the terminal device 103, and the second network device 102 is a target cell or a candidate cell of the terminal device 103.

Embodiments of the first aspect

An embodiment of the present application provides an information receiving method, which is applied on a terminal device side.

FIG. 2 is a schematic diagram of an information receiving method according to an embodiment of the present application. As shown in FIG. 2 , the method includes:

201, receiving first indication information;

202. When the first indication information indicates a transmission configuration indication state (TCI state) associated with the second cell, determine to perform one of the following actions: after receiving second indication information for indicating switching from the first cell to the second cell, apply the TCI state on the second cell, and, after applying the TCI state on the first cell, apply the TCI state on the second cell after receiving the second indication information.

After receiving the TCI state indication associated with the second cell, the terminal device determines to apply the TCI state before the cell switch indication, or to apply the TCI state after the cell switch indication. As a result, the terminal device can reasonably apply the received TCI state during the cell switching process, avoiding ambiguity between the network device and the terminal device on when to apply the TCI state. In addition, since the terminal device receives or applies the TCI state associated with the second cell in advance before switching to the second cell, the terminal device can quickly apply the TCI state after the cell switching, which helps to reduce the switching interruption time.

It is worth noting that the above FIG2 is only a schematic illustration of the embodiment of the present application, taking the terminal device as an example, but the present application is not limited thereto. For example, the execution order between the various operations can be appropriately adjusted, and other operations can be added or some operations can be reduced. In addition, the objects of the above operations can also be adjusted. Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description of the above FIG2.

In some embodiments, terms such as "transmission configuration indication state", "TCI state", "TCI" and "beam" can be used interchangeably. "Cell" can be equivalently replaced by "carrier". "Cell switch indication" can also be equivalently replaced by "cell switch command". "Indication information" can be equivalently replaced by "signaling". "First indication information" can be equivalently replaced by "TCI state indication" and "second indication information" can be equivalently replaced by "cell switch indication". "HARQ-ACK (Hybrid Automatic Repeat request-ACKnowledgement)" can be equivalently replaced by "ACK".

"Applying the TCI state on the second cell after receiving the second indication information indicating the switch from the first cell to the second cell" can be equivalently replaced by "Applying the TCI state on the second cell after the cell switch indication", or "Applying the TCI state on the second cell after the HARQ-ACK (or ACK) associated with the cell switch indication". For example, the terminal device receives the cell switch indication and then sends ACK2 to confirm that the cell switch indication has been correctly received. The present application is not limited to this, and the terminal device may not send ACK2.

"Applying TCI state on the first cell" can also be equivalently replaced by "applying TCI state on the first cell after HARQ-ACK (or ACK) associated with the TCI state indication". For example, the terminal device receives the TCI state indication and then sends ACK1 to confirm that the TCI state indication has been correctly received. The above is only an exemplary description, and the embodiments of the present application are not limited to this.

In some embodiments, the first indication information may indicate a TCI state associated with the second cell, wherein the manner in which the second cell is associated with the TCI state may refer to the relevant technology. In addition, the first indication information may also indicate a TCI state that is not associated with the cell. In the case where the first indication information indicates a TCI state that is not associated with the cell, the terminal device may determine to apply the TCI state that is not associated with the cell on the first cell.

The first cell may be a cell to which the TCI state should be applied. In other words, if the TCI state is not associated with any cell, the terminal device will apply the TCI state on the first cell. For example, the first cell is a serving cell of the terminal device, but the present application is not limited thereto, and the first cell may also be another cell. The application of the TCI state not associated with the cell on the first cell may refer to the relevant technology, which will not be described in detail here.

In some embodiments, the second cell is a cell different from the first cell. For example, the first cell is a cell before the terminal device switches, and the second cell is a cell after the terminal device switches. The second cell may be at least one of the following: a candidate cell (candidate cell) of the terminal device, a secondary cell (Scell), or a cell whose physical cell ID (PCI, Physical Cell ID) is different from the physical cell ID of the first cell; wherein the candidate cell is a cell to which the terminal device may switch, the network device may configure multiple candidate cells for the terminal device, and then instruct the terminal device to switch to one of the candidate cells through the second indication information, and the secondary service cell may be an activated secondary service cell (activated Scell) or a deactivated secondary service cell (deactivated Scell).

In some embodiments, the second indication information may be layer 1 or layer 2 signaling. In other words, the cell switching of the terminal device may be a cell switching based on layer 1/layer 2 signaling. Thus, the switching delay can be further reduced. However, the present application is not limited thereto, and the second indication information may be layer 3 signaling, etc.

Below, the information sending and receiving process is exemplarily described in conjunction with Figures 3 to 5. Figure 3 is a schematic diagram of the information sending and receiving process of an embodiment of the present application. As shown in Figure 3, the terminal device receives a TCI state indication (first indication information) that is not associated with a cell, and sends an ACK in response to the TCI state indication, indicating that the TCI state indication has been correctly received and the TCI state is applied in the service cell (first cell) of the terminal device.

FIG4 is another schematic diagram of the information sending and receiving process of an embodiment of the present application. As shown in FIG4, the terminal device receives a TCI state indication (first indication information) associated with the second cell, and sends an ACK1 in response to the TCI state indication, indicating confirmation that the TCI state indication has been correctly received, and the TCI state is applied in the service cell (first cell) of the terminal device. Wherein, applying the TCI state associated with the second cell in the first cell, for example, means that the terminal device receives information from the second cell or sends information to the second cell according to the TCI state within the frequency range of the first cell. Next, the terminal device receives a cell switching indication (second indication information) for indicating switching from the first cell to the second cell, and sends an ACK2 in response to the cell switching indication, indicating confirmation that the cell switching indication has been correctly received, and the TCI state is applied in the second cell of the terminal device.

Before switching to the second cell, the terminal device receives the TCI state associated with the second cell, and applies the TCI state in advance in the first cell. Therefore, after switching to the second cell, the TCI state can be quickly applied in the second cell, reducing the time of switching interruption.

FIG5 is another schematic diagram of the information sending and receiving process of an embodiment of the present application. As shown in FIG5, the terminal device receives a TCI state indication (first indication information) associated with the second cell, and sends ACK1 in response to the TCI state indication, indicating confirmation that the TCI state indication has been correctly received. Next, the terminal device receives a cell switching indication (second indication information) for indicating switching from the first cell to the second cell, and sends ACK2 in response to the cell switching indication, indicating confirmation that the cell switching indication has been correctly received, and the TCI state is applied in the second cell of the terminal device.

Before switching to the second cell, the terminal device receives the TCI state associated with the second cell in advance. Therefore, after switching to the second cell, the TCI state can be quickly applied in the second cell, reducing the time of switching interruption.

FIG6 is another schematic diagram of the information receiving method according to an embodiment of the present application. As shown in FIG6 , the method includes:

601, the terminal device receives first indication information;

602, the terminal device determines whether the TCI state indicated by the first indication information is associated with a cell. If the determination is "no", the terminal device executes 603; if the determination is "yes", the terminal device executes 604;

603, the terminal device determines to apply the TCI state not associated with the cell on the first cell;

604. The terminal device determines to perform one of the following actions: applying the TCI state associated with the second cell on the second cell after receiving the second indication information for indicating switching from the first cell to the second cell, and applying the TCI state associated with the second cell on the first cell, and applying the TCI state associated with the second cell on the second cell after receiving the second indication information.

Among them, step 601 is the same as step 201, and step 604 is the same as step 202.

In some embodiments, in step 202 or step 604, after the terminal device receives the TCI state associated with the second cell, the terminal device may determine to perform one of the above-mentioned behaviors in various ways, namely, applying the TCI state on the second cell after receiving the second indication information for indicating switching from the first cell to the second cell (hereinafter referred to as behavior 1), and applying the TCI state on the first cell and applying the TCI state on the second cell after receiving the second indication information (hereinafter referred to as behavior 2).

For example, the terminal device may determine to execute the above-mentioned action 1 or action 2 based on the first information described later; or, the terminal device may determine to execute the above-mentioned action 1 or action 2 based on the received first indication information and the fourth indication information described later; or, the terminal device may determine to execute the above-mentioned action 1 or action 2 based on the third condition and/or fourth condition described later, and so on.

The following is an exemplary description of the manner in which the terminal device determines behavior 1 or behavior 2.

Method 1:

Whether the terminal device adopts behavior 1 or behavior 2 may be determined by the network device. For example, the network device may instruct the terminal device to adopt behavior 1 or behavior 2 by means of first information indicating behavior 1 or behavior 2. That is, the network device indicates the first information to the terminal device, and the terminal device determines whether to adopt behavior 1 or behavior 2 according to the first information. The first information may be included in the first indication information, in which case the terminal device may determine whether to execute behavior 1 or behavior 2 according to the first indication information, or the first information may be sent to the terminal device through other information different from the first indication information.

In some embodiments, when the first indication information includes the first information, the first information may be information indicated by the first indication information. Alternatively, the first information may be information associated with the TCI state (i.e., the TCI state is associated with the second cell and the association may indicate the first information of behavior 1 or behavior 2).

Wherein, when the first information is information indicated by the first indication information, the first information may be indicated by a field of the first indication information. For example, the first indication information may be downlink control information (DCI) signaling, and the first information is indicated by one or more fields of the DCI signaling.

In the case where the first information is information associated with the TCI state, the first information may be included in an information element (IE) of the TCI state. However, the present application is not limited thereto, and the first information may also be associated with the TCI state in other ways.

In some embodiments, when the first information is information associated with TCI state, the first information may include first-category cell information and/or second-category cell information. Wherein, when the second cell is a first-category cell, the terminal device determines to apply the TCI state on the second cell after receiving the second indication information; when the second cell is a second-category cell, the terminal device determines to apply the TCI state on the first cell, and applies the TCI state on the second cell after receiving the second indication information.

In some embodiments, the first type of cell is, for example, a cell that satisfies an inter-frequency relationship with the first cell, or a cell that satisfies at least one of the following:

A cell in which the SSB has a different center frequency from the SSB of the first cell;

A cell having a different subcarrier spacing (SCS) between the SSB and the SSB of the first cell;

A cell in which the SSB and the SSB of the first cell have different system frame number offsets (SFN offset);

The SSB is not included in the cell within the active Bandwidth Part (active BWP); and

A cell whose timing difference with the first cell is greater than the fifth threshold.

In some embodiments, the second type of cell is, for example, a cell that satisfies an intra-frequency relationship with the first cell, or a cell that satisfies at least one of the following:

A cell in which the SSB has the same center frequency as the SSB of the first cell;

A cell in which the SSB has the same subcarrier spacing (SCS) as the SSB of the first cell;

A cell whose SSB has the same SFN offset as the SSB of the first cell;

The SSB is contained in the cell within the active BWP; and

A cell whose timing difference with the first cell is less than the sixth threshold.

The fifth threshold may be the same as or different from the sixth threshold.

However, the present application is not limited thereto, and the first type of cells and the second type of cells may also be other types of cells.

An example of the first information associated with TCI is given below. TCI state includes two IEs, namely additionalPCI1-r18 (first type of cell information) and additionalPCI2-r18 (second type of cell information).

The second cell is identified by a Physical Cell Identifier index (PCI index). PCI index can appear under additionalPCI1-r18 or additionalPCI2-r18.

As shown below, PCI index appears under additionalPCI1-r18, while additionalPCI2-r18 does not appear. In other words, the second cell is a first-type cell. In this case, the terminal device can determine to adopt behavior 1 according to the first indication information, that is, the terminal device applies TCI state on the second cell after receiving the second indication information.

As shown below, PCI index appears under additionalPCI2-r18, while additionalPCI1-r18 does not appear. In other words, the second cell is a second type cell. In this case, the terminal device can determine to adopt behavior 2 based on the first indication information, that is, apply TCI state on the first cell, and apply TCI state on the second cell after receiving the second indication information.

In some embodiments, when the first information is information associated with TCI state, the first information may include identification information, wherein, when the identification information indicates the first identification, the terminal device determines to apply TCI state on the second cell after receiving the second indication information; when the identification information indicates the second identification, the terminal device determines to apply TCI state on the first cell, and applies TCI state on the second cell after receiving the second indication information.

When the identification information indicates information different from the first identification, it can be determined that the identification information indicates the second identification; or, when the identification information does not appear, it can be determined that the identification information indicates the second identification.

Another example of the first information associated with TCI is given below. TCI state includes an IE, namely afterCellSwitch (identification information). As shown below, when the PCI index of the second cell appears under additionalPCI-r18, if afterCellSwitch appears (indicating enablement, i.e., the first identification), the terminal device adopts behavior 1, i.e., applies TCI state on the second cell after receiving the second indication information.

As shown below, if afterCellSwitch does not appear (indicating non-enablement), the terminal device adopts behavior 2, that is, applies TCI state on the first cell, and after receiving the second indication information, applies TCI state on the second cell.

Method 2:

Whether the terminal device adopts behavior 1 or behavior 2 may be determined by the network device. For example, the network device may send a first indication message indicating the TCI state associated with the second cell or send a fourth indication message indicating the TCI state associated with the second cell and switching from the first cell to the second cell to the terminal device, and the terminal device may determine whether to adopt behavior 1 or behavior 2 based on whether the first indication message or the fourth indication message is received.

For example, the network device may determine whether to send the first indication information or the fourth indication information according to the first condition and/or the second condition. The first condition may include at least one of the following:

The SSB of the second cell and the SSB of the first cell have different center frequencies;

The SSB of the second cell has a different subcarrier spacing (SCS) than the SSB of the first cell;

The SSB of the second cell and the SSB of the first cell have different system frame number offsets (SFN offset);

The SSB of the second cell is not included in the active BWP; and

The timing difference between the second cell and the first cell is greater than or equal to the first threshold.

The first threshold may be the same as or different from the aforementioned fifth threshold. "The first condition is satisfied" may be replaced by "the second cell satisfies the inter-frequency relationship with the first cell". For example, the first threshold is the cyclic prefix (CP) of the first cell, or the smallest or largest cyclic prefix between the first cell and the second cell. "The cyclic prefix of the first cell" means that the cyclic prefix is determined according to the SCS of the first cell.

The second condition may include at least one of the following:

The SSB of the second cell and the SSB of the first cell have the same center frequency;

The SSB of the second cell has the same subcarrier spacing (SCS) as the SSB of the first cell;

The SSB of the second cell has the same SFN offset as the SSB of the first cell;

The SSB of the second cell is contained within the active BWP; and

The timing difference between the second cell and the first cell is less than the second threshold.

The second threshold may be the same as or different from the aforementioned sixth threshold. The second threshold may be the same as or different from the aforementioned first threshold. "The second condition is satisfied" may be replaced by "the second cell satisfies the intra-frequency relationship with the first cell".

In some embodiments, when the first condition is not satisfied, the second condition is satisfied, and/or, when the second condition is not satisfied, the first condition is satisfied.

In some embodiments, the network device may send the fourth indication information when the first condition is met. In other words, the network device has scheduling restrictions. When the first condition is met, the network device can only send the fourth indication information, that is, indicate TCI state and cell switching at the same time; and cannot send the first indication information indicating TCI state first, and then send the second indication information indicating cell switching as shown in Figures 4 to 5.

For example, when the first condition includes "the SSB of the second cell and the SSB of the first cell have different center frequencies" and "the SSB of the second cell is not included in the active BWP", the network device can only indicate the TCI state associated with the second cell and the cell switching from the first cell to the second cell at the same time. This is schematically illustrated in Figure 6a, which is a schematic diagram of the frequency resources of the first cell and the second cell in an embodiment of the present application. As shown in Figure 6a, since the second cell has different frequency domain resources from the first cell (for example, completely non-overlapping frequency domain resources), even if the network device wants to indicate the TCI state of the second cell in advance through the first indication information, if the cell switching (from the first cell to the second cell) is not performed, the terminal device cannot receive information from the second cell or send information to the second cell within the frequency domain range of the first cell, that is, the TCI state cannot be applied in advance. In other words, in this case, it is unreasonable to apply the TCI state in advance. If the TCI state cannot be applied in advance, there is no need to indicate the TCI state in advance (for example, whether the TCI state is indicated before indicating the cell switching or when indicating the cell switching, the terminal device can only apply the TCI state after the cell switching). Therefore, in the case where the second cell has different frequency domain resources from the first cell, the network device can indicate the TCI state and the cell switching at the same time, and there is no need to use the first indication information and the second indication information to indicate the TCI state and the cell switching respectively.

In some embodiments, the network device may first send the first indication information and then send the second indication information when the second condition is met. The first indication information indicates the TCI state associated with the second cell, and the second indication information indicates the cell switching from the first cell to the second cell. The present application is not limited thereto, and the network device may also send the fourth indication information when the second condition is met. The fourth indication information indicates the TCI state associated with the second cell and the cell switching from the first cell to the second cell.

From the perspective of the network device, the network device ensures that the first indication information can be sent before the second indication information is sent only when the second condition is met, that is, the TCI state is indicated first, and then the cell switching is indicated. In addition, when the second condition is met, the network device can also choose to send the fourth indication information, that is, to indicate the TCI state and the cell switching at the same time. Therefore, when the second condition is met, the network device has two options.

FIG7 is another schematic diagram of the information sending and receiving process of an embodiment of the present application. As shown in FIG7, the terminal device receives the TCI state associated with the second cell and the indication of switching from the first cell to the second cell (the fourth indication information), sends an ACK in response to the indication, indicating that the indication has been correctly received, and the terminal device applies the TCI state on the second cell.

That is, from the perspective of the terminal device, when the terminal device receives the first indication information, it can be determined (considered) that the second condition is satisfied (for example, it is not necessary to perform an operation to determine whether the second condition is satisfied, and it can be determined that the second condition is satisfied), that is, the terminal device does not expect to receive the first indication information when the first condition is satisfied. In addition, the terminal device also determines to apply the TCI state indicated by the first indication information on the first cell, and after receiving the second indication information, applies the TCI state on the second cell.

When the terminal device receives the fourth indication information, it can be determined that the TCI state indicated by the fourth indication information is applied on the second cell. That is, when the first condition or the second condition is met, the terminal device may receive the fourth indication information. After receiving the fourth indication information, the terminal device applies the TCI state on the second cell after switching. In this way, no additional indication information is required to indicate behavior 1 or behavior 2.

Method 3:

The terminal device may decide whether to adopt behavior 1 or behavior 2. The terminal device determines whether the third condition and/or the fourth condition are satisfied, and determines whether to adopt behavior 1 or behavior 2 according to the determination result.

In some embodiments, the third condition may include at least one of the following:

The SSB of the second cell and the SSB of the first cell have different SFN offsets;

The SSB of the second cell is not included in the active BWP; and

The timing difference between the second cell and the first cell is greater than or equal to the third threshold.

The third threshold may be the same as or different from the aforementioned first threshold or fifth threshold.

The fourth condition may include at least one of the following:

The SSB of the second cell is contained within the active BWP; and

The timing difference between the second cell and the first cell is less than the fourth threshold.

The fourth threshold may be the same as or different from the second threshold or the sixth threshold. The fourth threshold may be the same as or different from the third threshold.

In some embodiments, when the third condition is not satisfied, the fourth condition is satisfied, and/or when the fourth condition is not satisfied, the third condition is satisfied.

In some embodiments, when the third condition is met, the terminal device can determine to apply the TCI state on the second cell after receiving the second indication information; when the fourth condition is met, the terminal device can determine to apply the TCI state on the first cell, and apply the TCI state on the second cell after receiving the second indication information.

For example, if the terminal device receives the first indication information, when the terminal device determines that the third condition is met, the terminal device determines to adopt behavior 1, that is, to apply the TCI state after the cell switching. If the terminal device receives the first indication information, when the terminal device determines that the fourth condition is met, the terminal device can determine to adopt behavior 2, that is, to apply the TCI state before the cell switching. If the fourth indication information is received, the terminal device can determine to adopt behavior 1, that is, to apply the TCI state after the cell switching.

In some embodiments, the above-mentioned methods 1 to 3 may be combined with each other or implemented separately. For example, in method 1 or method 3, when the terminal device receives the fourth indication information, it may determine to adopt behavior 1, that is, to apply the TCI state after the cell switching.

In some embodiments, as shown in FIG. 4, FIG. 5 and FIG. 7, when the terminal device receives the second indication information indicating switching from the first cell to the second cell, or receives the fourth indication information indicating switching from the first cell to the second cell and the TCI state associated with the second cell, the terminal device may send a first HARQ-ACK in response to the second indication information or the fourth indication information. For ease of description, the second indication information and the fourth indication information are collectively referred to as the third indication information indicating at least cell switching. The first HARQ-ACK in response to the third indication information may have the largest priority index.

The network device can learn whether the cell handover of the terminal device is successful based on the first HARQ-ACK, so as to use the second cell after the handover to provide services for the terminal device. Failure of the first HARQ-ACK transmission will increase the handover interruption time. Therefore, by giving priority to the reliable transmission of the first HARQ-ACK in response to the cell handover signaling (third indication information), that is, the first HARQ-ACK has the highest priority, for example, the HARQ-ACK has the largest priority index, which can help reduce the handover interruption time.

Currently, URLLC (Ultra-Reliable Low-Latency Communications) introduces priority index. For example, the DCI for scheduling the physical downlink shared channel (PDSCH) indicates a priority index (for example, a value of 0 or 1) to indicate the priority of the PDSCH and the HARQ-ACK in response to the PDSCH, where the larger the priority index value, the higher the priority.

In some embodiments, the third indication information may be associated with the first DCI, wherein a priority index field of the first DCI may be used to indicate that the first HARQ-ACK in response to the third indication information has the largest priority index.

The third indication information may be DCI or MAC-CE (MAC Control Element). Regardless of the method used by the third indication information, the terminal device needs to receive the third indication information by receiving DCI (first DCI). The priority index field of the first DCI indicates the priority index of the first HARQ-ACK in response to the third indication information. For the third indication information, the first DCI may always indicate the maximum priority index value.

In some embodiments, the terminal device may also receive a second DCI, wherein the second DCI may be a DCI for scheduling data or a DCI for scheduling no data. The terminal device may send a second HARQ-ACK in response to the second DCI. In the case where the first HARQ-ACK and the second HARQ-ACK are sent simultaneously, when the first HARQ-ACK and the second HARQ-ACK have the same priority index, the first HARQ-ACK may have a higher priority. Thus, it may be further ensured that the first HARQ-ACK in response to the cell switching can be reliably transmitted.

In the case of carrier aggregation (CA), the terminal device may need to transmit on multiple carriers (CC, Component Carrier) at the same time. Since the total transmit power of the terminal device is limited, the terminal device will prioritize power allocation for high-priority transmissions. For example, the terminal device needs to send the first HARQ-ACK for cell switching signaling on CC1 and send the second HARQ-ACK for PDSCH on CC2 at the same time. When the first HARQ-ACK and the second HARQ-ACK have the same priority index, the first HARQ-ACK is considered to have a higher priority, so the terminal device prioritizes power allocation for the first HARQ-ACK.

The above embodiments are merely exemplary of the embodiments of the present application, but the present application is not limited thereto, and appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

It can be seen from the above embodiment that after receiving the TCI state indication associated with the second cell, the terminal device determines to apply the TCI state before the cell switch indication, or to apply the TCI state after the cell switch indication. As a result, the terminal device can reasonably apply the received TCI state during the cell switching process, avoiding ambiguity between the network device and the terminal device on when to apply the TCI state. In addition, since the terminal device receives or applies the TCI state associated with the second cell in advance before switching to the second cell, the terminal device can quickly apply the TCI state after the cell switching, which helps to reduce the switching interruption time.

Embodiments of the second aspect

The embodiment of the present application provides an information sending method, which is applied to a network device side. The same contents as those of the embodiment of the first aspect are not repeated here.

FIG8 is a schematic diagram of a method for sending information according to an embodiment of the present application. As shown in FIG8 , the method includes:

801, sending a first indication message so that the terminal device determines to perform one of the following actions when the first indication message indicates a transmission configuration indication state (TCI state) associated with a second cell: applying the TCI state on the second cell after receiving second indication information for indicating switching from the first cell to the second cell, and applying the TCI state on the first cell, and applying the TCI state on the second cell after receiving the second indication message.

In some embodiments, after sending the first indication information, the network device may also send second indication information. The second indication information may be layer 1 or layer 2 signaling.

In some embodiments, when the first indication information indicates that there is no TCI state associated with a cell, the terminal device determines to apply the TCI state not associated with a cell on the first cell.

In some embodiments, the first indication information indicates one of the behaviors. For example, the network device determines which behavior to make the terminal device perform, generates and sends the corresponding first indication information.

In some embodiments, the first indication information includes first information for indicating the behavior, and the first information is information associated with the TCI state, or the first information is information indicated by the first indication information.

In some embodiments, when the first information is information associated with the TCI state, the first information is contained in the IE of the TCI state; and/or, when the first information is information indicated by the first indication information, the first information is information indicated by a field of the first indication information.

In some embodiments, when the first information is information associated with the TCI state, the first information includes first-category cell information and/or second-category cell information,

Among them, when the second cell is a first type cell, the terminal device is instructed to apply the TCI state on the second cell after receiving the second indication information; when the second cell is a second type cell, the terminal device is instructed to apply the TCI state on the first cell, and after receiving the second indication information, the terminal device is instructed to apply the TCI state on the second cell.

In some embodiments, when the first information is information associated with the TCI state, the first information includes identification information,

Among them, when the identification information indicates the first identification, the terminal device is instructed to apply the TCI state on the second cell after receiving the second indication information; when the identification information indicates the second identification, the terminal device is instructed to apply the TCI state on the first cell, and after receiving the second indication information, the terminal device is instructed to apply the TCI state on the second cell.

In some embodiments, when a second condition is met, the first indication information is sent, and then the second indication information for indicating switching from the first cell to the second cell is sent.

In some embodiments, when the second condition or the first condition is met, a fourth indication information is sent, wherein the fourth indication information indicates a TCI state associated with the second cell, and switching from the first cell to the second cell is performed so that the terminal device determines to apply the TCI state indicated by the fourth indication information on the second cell.

In some embodiments, the second condition includes at least one of the following:

The SSB of the second cell and the SSB of the first cell have the same subcarrier spacing (SCS);

The SSB of the second cell and the SSB of the first cell have the same SFN offset;

The SSB of the second cell is contained within the active BWP; and

A timing difference between the second cell and the first cell is less than a second threshold.

In some embodiments, the first condition includes at least one of the following:

The SSB of the second cell and the SSB of the first cell have different subcarrier spacing (SCS);

The SSB of the second cell is not included in the active BWP; and

A timing difference between the second cell and the first cell is greater than or equal to a first threshold.

In some embodiments, when the first condition is not satisfied, the second condition is satisfied, and/or when the second condition is not satisfied, the first condition is satisfied.

In some embodiments, the method further comprises:

Receiving a first HARQ-ACK in response to third indication information indicating at least a cell switching, wherein the first HARQ-ACK has a maximum priority index.

In some embodiments, the third indication information is associated with a first DCI, and a priority index field of the first DCI indicates (the first HARQ-ACK in response to the third indication information has) a maximum priority index.

In some embodiments, the method further comprises:

receiving a second HARQ-ACK in response to a second DCI, wherein the second DCI is a DCI for scheduling data or a DCI for scheduling no data,

The first HARQ-ACK is received simultaneously, wherein, when the first HARQ-ACK and the second HARQ-ACK have the same priority index, the first HARQ-ACK has a higher priority.

It is worth noting that the above FIG8 is only a schematic illustration of the embodiment of the present application, but the present application is not limited thereto. For example, the execution order between the various operations can be appropriately adjusted, and other operations can be added or some operations can be reduced. Those skilled in the art can make appropriate modifications based on the above content, and are not limited to the description of the above FIG8.

Embodiments of the third aspect

The embodiment of the present application provides an information receiving device, which may be, for example, a terminal device, or may be one or more components or assemblies configured in the terminal device, and the same contents as those in the embodiment of the first aspect will not be repeated.

FIG9 is a schematic diagram of an information receiving device according to an embodiment of the present application. As shown in FIG9 , the information receiving device 900 includes:

The receiving unit 901 receives first indication information.

A determining unit 902 determines to perform one of the following actions when the first indication information indicates a transmission configuration indication state (TCI state) associated with the second cell:

In some embodiments, the second indication information is layer 1 or layer 2 signaling.

In some embodiments, when the first indication information indicates that there is no TCI state associated with a cell, the determination 902 determines to apply the TCI state not associated with a cell on the first cell.

In some embodiments, the determining unit 902 determines to execute one of the behaviors according to the first indication information.

Among them, when the second cell is a first type cell, the determination unit 902 determines to apply the TCI state on the second cell after receiving the second indication information; when the second cell is a second type cell, the determination unit 902 determines to apply the TCI state on the first cell, and applies the TCI state on the second cell after receiving the second indication information.

Among them, when the identification information indicates the first identification, the determination unit 902 determines to apply the TCI state on the second cell after receiving the second indication information; when the identification information indicates the second identification, the determination unit 902 determines to apply the TCI state on the first cell, and applies the TCI state on the second cell after receiving the second indication information.

In some embodiments, the determination unit 902 determines that the second condition is met, and applies the TCI state on the first cell, and after receiving the second indication information, applies the TCI state on the second cell.

In some embodiments, the receiving unit 902 receives fourth indication information, wherein the fourth indication information indicates a TCI state associated with the second cell and a switch from the first cell to the second cell,

The determination unit 902 determines to apply the TCI state indicated by the fourth indication information on the second cell.

The SSB of the second cell is contained within the active BWP; and

The SSB of the second cell is not included in the active BWP; and

In some embodiments, the determining unit 902 determines to execute one of the actions according to the third condition and/or the fourth condition.

In some embodiments, when the third condition is met, the determination unit 902 determines to apply the TCI state on the second cell after receiving the second indication information; when the fourth condition is met, the determination unit 902 determines to apply the TCI state on the first cell, and applies the TCI state on the second cell after receiving the second indication information.

In some embodiments, the third condition includes at least one of the following:

The SSB of the second cell is not included in the active BWP; and

A timing difference between the second cell and the first cell is greater than or equal to a third threshold.

In some embodiments, the fourth condition includes at least one of the following:

The SSB of the second cell is contained within the active BWP; and

A timing difference between the second cell and the first cell is less than a fourth threshold.

In some embodiments, when the fourth condition is not satisfied, the third condition is satisfied, and/or when the third condition is not satisfied, the fourth condition is satisfied.

In some embodiments, the apparatus 900 further includes:

A sending unit 903, after receiving third indication information indicating at least cell switching, sends a first HARQ-ACK in response to the third indication information, wherein the first HARQ-ACK has the largest priority index.

In some embodiments, the receiving unit 901 receives a second DCI, wherein the second DCI is a DCI for scheduling data or a DCI for scheduling no data,

The sending unit 903 sends a second HARQ-ACK in response to the second DCI, and simultaneously sends the first HARQ-ACK, wherein, when the first HARQ-ACK and the second HARQ-ACK have the same priority index, the first HARQ-ACK has a higher priority.

It is worth noting that the above only describes the components or modules related to the present application, but the present application is not limited thereto. The information receiving device 900 may also include other components or modules, and the specific contents of these components or modules may refer to the relevant technology.

In addition, for the sake of simplicity, FIG. 9 only exemplifies the connection relationship or signal direction between various components or modules, but it should be clear to those skilled in the art that various related technologies such as bus connection can be used. The above-mentioned various components or modules can be implemented by hardware facilities such as processors, memories, transmitters, and receivers; the implementation of this application is not limited to this.

Embodiments of the fourth aspect

The embodiment of the present application provides an information sending device, which may be, for example, a network device, or may be one or more components or assemblies configured in the network device, and the same contents as those in the embodiment of the second aspect will not be repeated.

FIG10 is a schematic diagram of an information sending device according to an embodiment of the present application. As shown in FIG10 , the information sending device 1000 includes:

The sending unit 1001 sends first indication information so that the terminal device determines to perform one of the following actions when the first indication information indicates a transmission configuration indication state (TCI state) associated with the second cell:

In some embodiments, the first indication information indicates one of the behaviors.

In some embodiments, when the second condition is met, the sending unit 1001 sends the first indication information, and then sends the second indication information for indicating switching from the first cell to the second cell.

In some embodiments, when the second condition or the first condition is met, the sending unit 1001 sends a fourth indication message, wherein the fourth indication message indicates a TCI state associated with the second cell, and switches from the first cell to the second cell, so that the terminal device determines to apply the TCI state indicated by the fourth indication message on the second cell.

The SSB of the second cell is contained within the active BWP; and

The SSB of the second cell is not included in the active BWP; and

In some embodiments, the apparatus 1000 further includes:

A receiving unit 1002 receives a first HARQ-ACK in response to at least third indication information indicating a cell switch, wherein the first HARQ-ACK has a maximum priority index.

In some embodiments, the receiving unit 1002 receives a second HARQ-ACK in response to a second DCI, wherein the second DCI is a DCI for scheduling data or a DCI for scheduling no data,

The receiving unit 1002 simultaneously receives the first HARQ-ACK, wherein, when the first HARQ-ACK and the second HARQ-ACK have the same priority index, the first HARQ-ACK has a higher priority.

It is worth noting that the above only describes the components or modules related to the present application, but the present application is not limited thereto. The information sending device 1000 may also include other components or modules, and the specific contents of these components or modules may refer to the relevant technology.

In addition, for the sake of simplicity, FIG. 10 only exemplifies the connection relationship or signal direction between various components or modules, but it should be clear to those skilled in the art that various related technologies such as bus connection can be used. The above-mentioned various components or modules can be implemented by hardware facilities such as processors, memories, transmitters, and receivers; the implementation of this application is not limited to this.

Embodiments of the fifth aspect

An embodiment of the present application also provides a communication system, and reference may be made to FIG1 . The contents that are the same as those of the embodiments of the first to fourth aspects will not be repeated herein.

In some embodiments, the communication system 100 may include at least: a network device and a terminal device, wherein the network device may be the network device described in the embodiment of the fourth aspect, and the terminal device may be the terminal device described in the embodiment of the third aspect.

For example, the network device sends first indication information;

The terminal device receives the first indication information, and when the first indication information indicates a transmission configuration indication state (TCI state) associated with the second cell, determines to perform one of the following actions:

The embodiment of the present application also provides a terminal device, but the present application is not limited thereto and may also be other devices.

FIG11 is a schematic diagram of a terminal device according to an embodiment of the present application. As shown in FIG11 , the terminal device 1100 may include a processor 1101 and a memory 1102; the memory 1102 stores data and programs and is coupled to the processor 1101. It is worth noting that the figure is exemplary; other types of structures may also be used to supplement or replace the structure to implement telecommunication functions or other functions.

For example, the processor 1101 may be configured to execute a program to implement the information receiving method as described in the embodiment of the first aspect. For example, the processor 1101 may be configured to perform the following control: receiving first indication information, and when the first indication information indicates a transmission configuration indication state (TCI state) associated with a second cell, determining to perform one of the following actions: after receiving second indication information indicating switching from a first cell to a second cell, applying the TCI state on the second cell, and applying the TCI state on the first cell, and after receiving the second indication information, applying the TCI state on the second cell.

As shown in FIG11 , the terminal device 1100 may further include: a communication module 1103, an input unit 1104, a display 1105, and a power supply 1106. The functions of the above components are similar to those in the related art and are not described in detail here. It is worth noting that the terminal device 1100 does not necessarily include all the components shown in FIG11 , and the above components are not necessary; in addition, the terminal device 1100 may also include components not shown in FIG11 , and reference may be made to the related art.

An embodiment of the present application further provides a network device, which may be, for example, a base station, but the present application is not limited thereto and may also be other network devices.

FIG12 is a schematic diagram of the composition of a network device according to an embodiment of the present application. As shown in FIG12 , the network device 1200 may include: a processor 1201 (e.g., a central processing unit CPU) and a memory 1202; the memory 1202 is coupled to the processor 1201. The memory 1201 may store various data; in addition, it may store information processing programs, and execute the programs under the control of the processor 1201.

For example, the processor 1201 may be configured to execute a program to implement the information sending method as described in the embodiment of the second aspect. For example, the processor 1201 may be configured to perform the following control: send a first indication message so that the terminal device determines to perform one of the following actions when the first indication message indicates a transmission configuration indication state (TCI state) associated with the second cell: after receiving the second indication message for indicating switching from the first cell to the second cell, apply the TCI state on the second cell, and apply the TCI state on the first cell, and after receiving the second indication message, apply the TCI state on the second cell.

In addition, as shown in FIG12 , the network device 1200 may further include: a transceiver 1204 and an antenna 1205, etc.; wherein the functions of the above components are similar to those of the prior art and are not described in detail here. It is worth noting that the network device 1200 does not necessarily include all the components shown in FIG12 ; in addition, the network device 1200 may also include components not shown in FIG12 , which may refer to the prior art.

An embodiment of the present application further provides a computer program, wherein when the program is executed in a terminal device, the program enables the terminal device to execute the information receiving method described in the embodiment of the first aspect.

An embodiment of the present application also provides a storage medium storing a computer program, wherein the computer program enables a terminal device to execute the information receiving method described in the embodiment of the first aspect.

An embodiment of the present application also provides a computer program, wherein when the program is executed in a network device, the program causes the network device to execute the information sending method described in the embodiment of the second aspect.

An embodiment of the present application also provides a storage medium storing a computer program, wherein the computer program enables a network device to execute the information sending method described in the embodiment of the second aspect.

The above devices and methods of the present application can be implemented by hardware, or by hardware combined with software. The present application relates to such a computer-readable program, which, when executed by a logic component, enables the logic component to implement the above-mentioned devices or components, or enables the logic component to implement the various methods or steps described above. The present application also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, etc.

The method/device described in conjunction with the embodiments of the present application may be directly embodied as hardware, a software module executed by a processor, or a combination of the two. For example, one or more of the functional block diagrams shown in the figure and/or one or more combinations of the functional block diagrams may correspond to various software modules of the computer program flow or to various hardware modules. These software modules may correspond to the various steps shown in the figure, respectively. These hardware modules may be implemented by solidifying these software modules, for example, using a field programmable gate array (FPGA).

The software module may be located in a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. A storage medium may be coupled to a processor so that the processor can read information from the storage medium and write information to the storage medium; or the storage medium may be an integral part of the processor. The processor and the storage medium may be located in an ASIC. The software module may be stored in a memory of a mobile terminal or in a memory card that can be inserted into the mobile terminal. For example, if a device (such as a mobile terminal) uses a large-capacity MEGA-SIM card or a large-capacity flash memory device, the software module may be stored in the MEGA-SIM card or the large-capacity flash memory device.

One or more of the functional blocks and/or one or more combinations of the functional blocks described in the accompanying drawings may be implemented as a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or any appropriate combination thereof for performing the functions described in the present application. One or more of the functional blocks and/or one or more combinations of the functional blocks described in the accompanying drawings may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in communication with a DSP, or any other such configuration.

The present application is described above in conjunction with specific implementation methods, but it should be clear to those skilled in the art that these descriptions are exemplary and are not intended to limit the scope of protection of the present application. Those skilled in the art can make various modifications and variations to the present application based on the spirit and principles of the present application, and these modifications and variations are also within the scope of the present application.

Regarding the implementation methods including the above embodiments, the following additional notes are also disclosed:

Information receiving device on terminal equipment side

1. An information receiving device, configured in a terminal device, comprising:

A receiving unit, which receives first indication information,

2. The device according to Note 1, wherein:

The determining unit determines to execute one of the actions according to the third condition and/or the fourth condition.

3. The device according to Note 2, wherein:

When the third condition is met, the determination unit determines to apply the TCI state on the second cell after receiving the second indication information; when the fourth condition is met, the determination unit determines to apply the TCI state on the first cell, and applies the TCI state on the second cell after receiving the second indication information.

4. The device according to Note 2 or 3, wherein the third condition includes at least one of the following:

The SSB of the second cell is not included in the active BWP; and

5. The device according to Note 2 or 3, wherein the fourth condition includes at least one of the following:

The SSB of the second cell is contained within the active BWP; and

6. The device according to Note 2 or 3, wherein:

When the fourth condition is not satisfied, the third condition is satisfied, and/or when the third condition is not satisfied, the fourth condition is satisfied.

Information receiving method at terminal device side

1. A method for receiving information, applied to a terminal device, the method comprising:

receiving first indication information,

2. The method according to Note 1, wherein:

The second indication information is layer 1 or layer 2 signaling.

3. The method according to Note 1, wherein:

In a case where the first indication information indicates that there is no TCI state associated with a cell, it is determined to apply the TCI state not associated with a cell on the first cell.

4. The method according to Note 1, wherein:

Determine, according to the first indication information, to execute one of the actions.

5. The method according to Note 4, wherein:

The first indication information includes first information for indicating the behavior, and the first information is information associated with the TCI state, or the first information is information indicated by the first indication information.

6. The method according to Note 5, wherein:

In the case where the first information is information associated with the TCI state, the first information is contained in the IE of the TCI state; and/or, in the case where the first information is information indicated by the first indication information, the first information is information indicated by a field of the first indication information.

7. The method according to Note 5 or 6, wherein:

In the case where the first information is information associated with the TCI state, the first information includes first-category cell information and/or second-category cell information,

Among them, when the second cell is a first type cell, it is determined to apply the TCI state on the second cell after receiving the second indication information; when the second cell is a second type cell, it is determined to apply the TCI state on the first cell, and after receiving the second indication information, the TCI state is applied on the second cell.

8. The method according to Note 5 or 6, wherein:

In the case where the first information is information associated with the TCI state, the first information includes identification information,

Among them, when the identification information indicates the first identification, it is determined to apply the TCI state on the second cell after receiving the second indication information; when the identification information indicates the second identification, it is determined to apply the TCI state on the first cell, and after receiving the second indication information, the TCI state is applied on the second cell.

9. The method according to Note 1, wherein:

Determine that the second condition is met and apply the TCI state on the first cell, and after receiving the second indication information, apply the TCI state on the second cell.

10. The method according to Note 9, wherein:

receiving fourth indication information, wherein the fourth indication information indicates a TCI state associated with the second cell and a switch from the first cell to the second cell,

Determine to apply the TCI state indicated by the fourth indication information on the second cell.

11. The method according to Supplementary Note 9, wherein the second condition includes at least one of the following:

The SSB of the second cell is contained within the active BWP; and

12. The method according to Note 9, wherein:

When the first condition is not satisfied, the second condition is satisfied, and/or when the second condition is not satisfied, the first condition is satisfied.

13. The method according to Note 12, wherein the first condition includes at least one of the following:

The SSB of the second cell is not included in the active BWP; and

14. The method according to Note 1, wherein:

Determining to execute one of the actions is performed according to the third condition and/or the fourth condition.

15. The method according to Note 14, wherein:

When the third condition is met, it is determined that the TCI state is applied on the second cell after receiving the second indication information; when the fourth condition is met, it is determined that the TCI state is applied on the first cell, and after receiving the second indication information, the TCI state is applied on the second cell.

16. The method according to Note 14 or 15, wherein the third condition includes at least one of the following:

The SSB of the second cell is not included in the active BWP; and

17. The method according to Note 14 or 15, wherein the fourth condition includes at least one of the following:

The SSB of the second cell is contained within the active BWP; and

18. The method according to Note 14 or 15, wherein:

19. The method according to Supplement 1, wherein the method further comprises:

After receiving third indication information indicating at least cell switching, sending a first HARQ-ACK in response to the third indication information, wherein the first HARQ-ACK has the largest priority index.

20. The method according to Note 19, wherein:

The third indication information is associated with the first DCI, and the priority index field of the first DCI indicates (the first HARQ-ACK in response to the third indication information has) the maximum priority index.

21. The method according to Note 19 or 20, wherein the method further comprises:

receiving a second DCI, wherein the second DCI is a DCI for scheduling data or a DCI for scheduling no data,

Sending a second HARQ-ACK in response to the second DCI, and simultaneously sending the first HARQ-ACK, wherein, in the case where the first HARQ-ACK and the second HARQ-ACK have the same priority index, the first HARQ-ACK has a higher priority.

Terminal Equipment

23. A terminal device, comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the computer program to implement the information receiving method as described in Notes 1 to 21.

Information sending device on network equipment side

1. An information sending device, the device being configured in a network device, the device comprising:

2. The device according to Note 1, wherein:

The second indication information is layer 1 or layer 2 signaling.

3. The device according to Note 1, wherein:

In a case where the first indication information indicates that there is no TCI state associated with a cell, the terminal device determines to apply the TCI state not associated with a cell on the first cell.

4. The device according to Note 1, wherein:

The first indication information indicates one of the behaviors.

5. The device according to Note 4, wherein:

6. The device according to Note 5, wherein:

7. The device according to Note 5 or 6, wherein:

8. The device according to Note 5 or 6, wherein:

9. The device according to Note 1, wherein:

When the second condition is met, the sending unit sends the first indication information, and then sends the second indication information for indicating switching from the first cell to the second cell.

10. The device according to Note 9, wherein:

When the second condition or the first condition is met, the sending unit sends fourth indication information, wherein the fourth indication information indicates the TCI state associated with the second cell, and switches from the first cell to the second cell, so that the terminal device determines to apply the TCI state indicated by the fourth indication information on the second cell.

11. The device according to Note 9 or 10, wherein the second condition includes at least one of the following:

The SSB of the second cell is contained within the active BWP; and

12. The device according to Note 10, wherein the first condition includes at least one of the following:

The SSB of the second cell is not included in the active BWP; and

13. The device according to Note 11 or 12, wherein:

14. The device according to Note 1, wherein the device further comprises:

A receiving unit, which receives a first HARQ-ACK in response to at least third indication information indicating cell switching, wherein the first HARQ-ACK has a maximum priority index.

15. The device according to Note 14, wherein:

16. The device according to Note 14, wherein:

The receiving unit receives a second HARQ-ACK in response to a second DCI, wherein the second DCI is a DCI for scheduling data or a DCI for scheduling no data,

The receiving unit simultaneously receives the first HARQ-ACK, wherein, when the first HARQ-ACK and the second HARQ-ACK have the same priority index, the first HARQ-ACK has a higher priority.

Information sending method on network device side

1. A method for sending information, the method being applied to a network device, the method comprising:

2. The method according to Note 1, wherein:

The second indication information is layer 1 or layer 2 signaling.

3. The method according to Note 1, wherein:

4. The method according to Note 1, wherein:

The first indication information indicates one of the behaviors.

5. The method according to Note 4, wherein:

6. The method according to Note 5, wherein:

7. The method according to Note 5 or 6, wherein:

8. The method according to Note 5 or 6, wherein:

9. The method according to Note 1, wherein:

When the second condition is met, the first indication information is sent, and then the second indication information for indicating switching from the first cell to the second cell is sent.

10. The method according to Note 9, wherein:

When the second condition or the first condition is met, a fourth indication message is sent, wherein the fourth indication message indicates a TCI state associated with the second cell, and switching from the first cell to the second cell is performed, so that the terminal device determines to apply the TCI state indicated by the fourth indication message on the second cell.

11. The method according to Note 9 or 10, wherein the second condition includes at least one of the following:

The SSB of the second cell is contained within the active BWP; and

12. The method according to Note 10, wherein the first condition includes at least one of the following:

The SSB of the second cell is not included in the active BWP; and

13. The method according to Note 11 or 12, wherein:

14. The method according to Note 1, wherein the method further comprises:

15. The method according to Note 14, wherein:

16. The method according to Note 14, wherein the method further comprises:

Internet equipment

1. A network device, comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the computer program to implement the information sending method as described in Notes 1 to 16.

Claims

An information receiving device, configured in a terminal device, characterized in that the information receiving device comprises:

A receiving unit, which receives first indication information,

a determining unit, which, when the first indication information indicates a transmission configuration indication state associated with the second cell, determines to perform one of the following actions:

After receiving second indication information for indicating switching from the first cell to the second cell, applying the transmission configuration indication state on the second cell, and

The transmission configuration indication state is applied on the first cell, and after receiving the second indication information, the transmission configuration indication state is applied on the second cell.
The device according to claim 1, wherein

The second indication information is layer 1 or layer 2 signaling.
The device according to claim 1, wherein

In a case where the first indication information indicates a transmission configuration indication state not associated with a cell, the determining unit determines to apply the transmission configuration indication state not associated with a cell on the first cell.
The device according to claim 1, wherein

The determining unit determines to execute one of the actions according to the first indication information.
The device according to claim 4, wherein

The first indication information includes first information for indicating the behavior, the first information is information associated with the transmission configuration indication state, or the first information is information indicated by the first indication information.
The device according to claim 5, wherein

In the case where the first information is information associated with the transmission configuration indication state, the first information is contained in the information element of the transmission configuration indication state; and/or, in the case where the first information is information indicated by the first indication information, the first information is information indicated by the field of the first indication information.
The device according to claim 5, wherein

In the case where the first information is information associated with the transmission configuration indication state, the first information includes first-category cell information and/or second-category cell information,

Wherein, in the case where the second cell is a first type cell, the determining unit determines to apply the transmission configuration indication state on the second cell after receiving the second indication information; in the case where the second cell is a second type cell, the determining unit determines to apply the transmission configuration indication state on the first cell, and after receiving the second indication information, applies the transmission configuration indication state on the second cell;

or,

In the case where the first information is information associated with the transmission configuration indication state, the first information includes identification information,

Among them, when the identification information indicates the first identification, the determination unit determines to apply the transmission configuration indication state on the second cell after receiving the second indication information; when the identification information indicates the second identification, the determination unit determines to apply the transmission configuration indication state on the first cell, and after receiving the second indication information, applies the transmission configuration indication state on the second cell.
The device according to claim 1, wherein

The determining unit determines that a second condition is satisfied, and applies the transmission configuration indication state on the first cell, and after receiving the second indication information, applies the transmission configuration indication state on the second cell;

or,

The receiving unit receives fourth indication information, wherein the fourth indication information indicates a transmission configuration indication state associated with the second cell and a switching from the first cell to the second cell,

The determining unit determines to apply the transmission configuration indication state indicated by the fourth indication information on the second cell.
The device according to claim 8, wherein

The second condition includes at least one of the following:

The SSB of the second cell and the SSB of the first cell have the same center frequency;

The SSB of the second cell and the SSB of the first cell have the same subcarrier spacing;

The SSB of the second cell and the SSB of the first cell have the same system frame number offset;

The SSB of the second cell is included in the activated portion of the bandwidth; and

The timing difference between the second cell and the first cell is less than a second threshold;

or,

When the first condition is not satisfied, the second condition is satisfied, and/or when the second condition is not satisfied, the first condition is satisfied, wherein the first condition includes at least one of the following:

The SSB of the second cell and the SSB of the first cell have different center frequencies;

The SSB of the second cell and the SSB of the first cell have different subcarrier spacings;

The SSB of the second cell and the SSB of the first cell have different system frame number offsets;

The SSB of the second cell is not included in the activated portion of the bandwidth; and

The timing difference between the second cell and the first cell is greater than or equal to a first threshold.
The device according to claim 1, wherein the device further comprises:

A sending unit, after receiving third indication information indicating at least cell switching, sends a first HARQ-ACK in response to the third indication information, wherein the first HARQ-ACK has a maximum priority index.
The device according to claim 10, wherein

The third indication information is associated with the first DCI, and the priority index field of the first DCI indicates the maximum priority index.
The device according to claim 11, wherein

The receiving unit receives a second DCI, wherein the second DCI is a DCI for scheduling data or a DCI for scheduling no data,

The sending unit sends a second HARQ-ACK in response to the second DCI, and simultaneously sends the first HARQ-ACK, wherein, in a case where the first HARQ-ACK and the second HARQ-ACK have the same priority index, the first HARQ-ACK has a higher priority.
An information sending device, the device being configured in a network device, characterized in that the device comprises:

A sending unit, which sends first indication information, so that the terminal device determines to perform one of the following actions when the first indication information indicates a transmission configuration indication state associated with the second cell:

After receiving second indication information for indicating switching from the first cell to the second cell, applying the transmission configuration indication state on the second cell, and

The transmission configuration indication state is applied on the first cell, and after receiving the second indication information, the transmission configuration indication state is applied on the second cell.
The device according to claim 13, wherein

The first indication information further indicates the behavior.
The device according to claim 14, wherein

The first indication information includes first information for indicating the behavior, the first information is information associated with the transmission configuration indication state, or the first information is information indicated by the first indication information.
The device according to claim 15, wherein

In the case where the first information is information associated with the transmission configuration indication state, the first information includes first-category cell information and/or second-category cell information,

Wherein, when the second cell is a first type cell, the terminal device is instructed to apply the transmission configuration indication state on the second cell after receiving the second indication information; when the second cell is a second type cell, the terminal device is instructed to apply the transmission configuration indication state on the first cell, and after receiving the second indication information, the transmission configuration indication state is applied on the second cell;

or,

In the case where the first information is information associated with the transmission configuration indication state, the first information includes identification information,

Among them, when the identification information indicates the first identification, the terminal device is instructed to apply the transmission configuration indication state on the second cell after receiving the second indication information; when the identification information indicates the second identification, the terminal device is instructed to apply the transmission configuration indication state on the first cell, and after receiving the second indication information, the transmission configuration indication state is applied on the second cell.
The device according to claim 13, wherein

When a second condition is met, the sending unit sends the first indication information, and then sends the second indication information for indicating switching from the first cell to the second cell;

and / or,

When the second condition or the first condition is met, the sending unit sends fourth indication information, wherein the fourth indication information indicates a transmission configuration indication state associated with the second cell, and switches from the first cell to the second cell, so that the terminal device determines to apply the transmission configuration indication state indicated by the fourth indication information on the second cell.
The device according to claim 13, wherein the device further comprises:

A receiving unit receives a first HARQ-ACK in response to at least third indication information indicating cell switching, wherein the first HARQ-ACK has a maximum priority index.
The device according to claim 18, wherein

The third indication information is associated with the first DCI, and the priority index field of the first DCI indicates the maximum priority index;

or,

The receiving unit receives a second HARQ-ACK in response to a second DCI, wherein the second DCI is a DCI for scheduling data or a DCI for scheduling no data,

The receiving unit simultaneously receives the first HARQ-ACK, wherein, in a case where the first HARQ-ACK and the second HARQ-ACK have the same priority index, the first HARQ-ACK has a higher priority.
A communication system, comprising a network device and a terminal device, characterized in that:

The network device sends first indication information;

The terminal device receives the first indication information, and when the first indication information indicates a transmission configuration indication state associated with a second cell, determines to perform one of the following actions: after receiving second indication information for indicating switching from the first cell to the second cell, applying the transmission configuration indication state on the second cell, and applying the transmission configuration indication state on the first cell, and after receiving the second indication information, applying the transmission configuration indication state on the second cell.