Transmission configuration state activation method, device and storage medium

Abstract

The present disclosure relates to a transmission configuration state activation method, an apparatus, and a storage medium. The transmission configuration state activation method is applied to a terminal and includes the steps of receiving a first media access control (MAC) signaling that activates a first transmission configuration state and setting the first transmission configuration state as the transmission configuration state of all serving cells on the same frequency band. The transmission configuration state activation method is applied to a network device and includes the steps of selecting a first serving cell that supports transmission of the MAC signaling from all serving cells on the same frequency band of the terminal, the first serving cell supporting transmission of the MAC signaling, and transmitting, using the selected first serving cell, the first MAC signaling that activates the first transmission configuration state. According to the present disclosure, the transmission configuration states of all serving cells are activated via the same MAC signaling, thereby reducing signaling overhead.

Description

[Technical field]

[0001] The present disclosure relates to the field of communication technologies, and in particular to a transmission configuration state activation method, apparatus, and storage medium. [Background technology]

[0002] In a New Radio (NR) communication system, data transmission is usually required to be based on a beam in order to guarantee coverage and resist path loss. In the data transmission based on a beam, a network device (e.g., a base station) indicates a transmission configuration indication (TCI) state through signaling, and further indicates a receiving beam or a transmitting beam of a terminal.

[0003] In the related art, a network device determines multiple TCI states based on measurement results reported by a terminal, and notifies the terminal of the multiple TCI states through Radio Resource Control (RRC) signaling. Then, for each component carrier (CC), i.e., serving cell / bandwidth part (BWP), it indicates the TCI states that need to be activated in the multiple TCI states through a Medium Access Control (MAC) control unit (Control Element, CE). If there are many serving cells / BWPs configured by a terminal, the base station needs to send multiple MAC CE signaling to activate the TCI state configuration on each serving cell / BWP, which leads to a large signaling overhead. Summary of the Invention [Problem to be solved by the invention]

[0004] To overcome the problems in the related art, the present disclosure provides a transmission configuration state activation method, apparatus, and storage medium. [Means for solving the problem]

[0005] According to a first aspect of an embodiment of the present disclosure, a transmission configuration state activation method applied to a terminal is provided, the transmission configuration state activation method including: receiving a first medium access control control unit signaling for activating a first transmission configuration state; and setting the first transmission configuration state as a transmission configuration state of all serving cells on the same frequency band.

[0006] In one example, the first transmission configuration state is a transmission configuration state of a physical downlink control channel, and after setting the first transmission configuration state as the transmission configuration state of all serving cells on the same frequency band, the method further includes a step of determining that a bandwidth portion switch has occurred in any serving cell and receiving the physical downlink control channel transmitted in the post-switched bandwidth portion using the first transmission configuration state if no second media access control control unit signaling activating the second transmission configuration state has been received.

[0007] In another example, the first transmission configuration state is a set of transmission configuration states of a physical downlink shared channel, and after setting the first transmission configuration state as the transmission configuration state of all serving cells on the same frequency band, the method further includes a step of determining that a bandwidth portion switch has occurred in any serving cell and receiving downlink control signaling indicating one transmission configuration state in the first transmission configuration state if a second medium access control control unit signaling activating a second transmission configuration state has not been received, and a step of receiving the physical downlink shared channel transmitted in the bandwidth portion after the switch using the transmission configuration state indicated by the downlink control signaling.

[0008] In another example, after making the first transmission configuration state the transmission configuration state of all serving cells on the same frequency band, the method further includes a step of reusing the first transmission configuration state on the pre-switching secondary cell in the post-switching secondary cell if it is determined that a secondary cell switch has occurred.

[0009] In another example, after setting the first transmission configuration state as the transmission configuration state of all serving cells on the same frequency band, the method further includes receiving a second media access control control unit signaling and updating the first transmission configuration state of all serving cells to a second transmission configuration state activated by the second media access control control unit signaling if it is determined that a primary cell or primary secondary cell switch has occurred.

[0010] In another example, after setting the first transmission configuration state as the transmission configuration state of all serving cells on the same frequency band, the method further includes, if it is determined that a serving cell in which a beam failure has occurred exists, redetermining the transmission configuration state of the serving cell in which the beam failure has occurred, and updating the transmission configuration states of serving cells other than the serving cell in which the beam failure has occurred in all serving cells to the transmission configuration state redetermined by the serving cell in which the beam failure has occurred, or maintaining the transmission configuration states of serving cells other than the serving cell in which the beam failure has occurred in all serving cells as they are before receiving the second transmission configuration state activated by the second media access control control unit signaling.

[0011] In another example, the method further includes receiving second media access control control unit signaling activating a second transmission configuration state, and updating the first transmission configuration state to the second transmission configuration state.

[0012] In another example, receiving the first media access control control unit signaling includes receiving the first media access control control unit signaling using an initial bandwidth portion or an active bandwidth portion of the determined first serving cell.

[0013] In another example, before receiving the first media access control control unit signaling, the method further includes receiving a configuration message indicating a bandwidth and carrier frequency location of each serving cell in all serving cells of the terminal, and determining all serving cells on the same frequency band using the bandwidth and carrier frequency location.

[0014] According to a second aspect of an embodiment of the present disclosure, a transmission configuration state activation method is provided, which is applied to a network device, and includes the steps of selecting one first serving cell from among all serving cells on the same frequency band of the terminal, the serving cell supporting transmission of media access control control unit signaling, and transmitting, using the selected one first serving cell, a first media access control control unit signaling to activate a first transmission configuration state.

[0015] In one example, the step of selecting one first serving cell from among all serving cells on the same frequency band of the terminal includes the step of randomly selecting one first serving cell from among all serving cells on the same frequency band of the terminal, or selecting a designated first serving cell from among all serving cells on the same frequency band of the terminal.

[0016] In another example, the designated first serving cell is the serving cell with the lowest carrier frequency among all the serving cells, or the designated first serving cell is a primary secondary cell or a primary cell among all the serving cells, and the designated first serving cell is a serving cell that detects an idle channel in the unlicensed spectrum.

[0017] In another example, the step of transmitting the media access control control unit signaling using the selected one first serving cell includes the step of transmitting the media access control control unit signaling using an initial bandwidth portion or an active bandwidth portion on the selected first serving cell.

[0018] In another example, a transmission configuration state activation method includes sending second media access control control unit signaling to activate a second transmission configuration state.

[0019] In another example, before transmitting the second media access control control unit signaling, the method further includes a step of determining that any one or combination of the following events has occurred: a terminal channel condition changes, the terminal experiences a bandwidth portion switch, the terminal experiences a secondary cell switch, the terminal experiences a primary cell or primary secondary cell switch, and the terminal experiences a serving cell beam failure.

[0020] In another example, the transmission configuration state activation method further includes sending a configuration message to inform the terminal of the bandwidth and carrier frequency location of each serving cell in all serving cells.

[0021] In another example, the first transmission configuration state includes a transmission configuration state of a physical downlink control channel or a transmission configuration state set of a physical downlink shared channel.

[0022] According to a third aspect of an embodiment of the present disclosure, a transmission configuration state activation device is provided, which is applied to a terminal, and includes: a receiving unit configured to receive a first medium access control control unit signaling for activating a first transmission configuration state; and a processing unit configured to set the first transmission configuration state as a transmission configuration state of all serving cells on the same frequency band.

[0023] In one example, the first transmission configuration state is a transmission configuration state of a physical downlink control channel, the processing unit is further configured to determine whether a bandwidth portion switch has occurred, and the receiving unit is further configured to receive the physical downlink control channel transmitted in the switched bandwidth portion using the first transmission configuration state if the processing unit determines that a bandwidth portion switch has occurred in any serving cell and the receiving unit does not receive a second media access control unit signaling activating the second transmission configuration state.

[0024] In another example, the first transmission configuration state is a set of transmission configuration states of a physical downlink shared channel, the processing unit is further configured to determine whether a bandwidth portion switch has occurred, and the receiving unit is further configured to, when the processing unit determines that a bandwidth portion switch has occurred in any serving cell and the receiving unit has not received second media access control control unit signaling activating the second transmission configuration state, receive downlink control signaling indicating one transmission configuration state in the first transmission configuration state, and receive the physical downlink shared channel transmitted in the switched bandwidth portion using the transmission configuration state indicated by the downlink control signaling.

[0025] In another example, the processing unit is further configured to determine whether a secondary cell switch has occurred, and if it is determined that a secondary cell switch has occurred, to reuse the first transmission configuration state on the secondary cell before the switch in the secondary cell after the switch.

[0026] In another example, the processing unit is further configured to determine whether a primary cell or primary secondary cell switch has occurred, and the receiving unit is further configured to receive a second media access control control unit signaling and update the first transmission configuration states of all serving cells to a second transmission configuration state activated by the second media access control control unit signaling if the processing unit determines that a primary cell or primary secondary cell switch has occurred.

[0027] In another example, the processing unit is further configured to determine whether a serving cell in which a beam failure has occurred exists, and if it is determined that a serving cell in which a beam failure has occurred exists, to redetermine the transmission configuration state of the serving cell in which the beam failure has occurred, and to update the transmission configuration states of serving cells other than the serving cell in which the beam failure has occurred in all serving cells to the transmission configuration state redetermined by the serving cell in which the beam failure has occurred before the receiving unit receives the second transmission configuration state activated by the second media access control control unit signaling, or to maintain the transmission configuration states of serving cells other than the serving cell in which the beam failure has occurred in all serving cells as they are.

[0028] In another example, the receiving unit is further configured to receive a second media access control control unit signaling, the second media access control control unit signaling activating a second transmission configuration state, and the processing unit is further configured to update the first transmission configuration state to the second transmission configuration state when the receiving unit receives the second media access control control unit signaling.

[0029] In another example, the receiving unit is configured to receive the first media access control control unit signaling using a method of receiving the first media access control control unit signaling using an initial bandwidth portion or an active bandwidth portion of the determined first serving cell.

[0030] In another example, the receiving unit is further configured to receive a configuration message indicating a bandwidth and a carrier frequency location of each serving cell in all serving cells of the terminal, and the processing unit is further configured to determine all serving cells on the same frequency band using the bandwidth and the carrier frequency location.

[0031] According to a fourth aspect of an embodiment of the present disclosure, a transmission configuration state activation apparatus is provided, which is applied to a network device and includes: a processing unit configured to select one first serving cell that supports transmission of media access control control unit signaling from among serving cells on the same frequency band of the terminal; and a transmitting unit configured to transmit, using the selected one first serving cell, a first media access control control unit signaling that activates a first transmission configuration state.

[0032] In one example, the processing unit is configured to select one first serving cell from among all serving cells on the same frequency band of the terminal by using a method of randomly selecting one first serving cell from among all serving cells on the same frequency band of the terminal, or selecting a designated first serving cell from among all serving cells on the same frequency band of the terminal.

[0033] In another example, the designated first serving cell is the serving cell with the lowest carrier frequency among all the serving cells, or the designated first serving cell is a primary secondary cell or a primary cell among all the serving cells, and the designated first serving cell is a serving cell that detects an idle channel in the unlicensed spectrum.

[0034] In another example, the transmitting unit is configured to transmit media access control control unit signaling using a selected one first serving cell by using an initial bandwidth portion or an active bandwidth portion on the selected first serving cell to transmit the media access control control unit signaling.

[0035] In another example, the transmitting unit is further configured to transmit second media access control signaling that activates a second transmission configuration state.

[0036] In another example, the processing unit is further configured to determine that any one or combination of the following events has occurred before the transmitting unit transmits the second media access control control unit signaling: a terminal channel condition changes, a bandwidth partial switch occurs in the terminal, a secondary cell switch occurs in the terminal, a primary cell or primary secondary cell switch occurs in the terminal, and a serving cell beam failure occurs in the terminal.

[0037] In another example, the sending unit is further configured to send a configuration message to inform the terminal of the bandwidth and carrier frequency location of each serving cell in all the serving cells.

[0038] In another example, the first transmission configuration state includes a transmission configuration state of a physical downlink control channel or a transmission configuration state set of a physical downlink shared channel.

[0039] According to a fifth aspect of an embodiment of the present disclosure, there is provided a transmission configuration state activation device, the transmission configuration state activation device including a processor and a memory storing instructions executable by the processor, the processor being configured to execute the transmission configuration state activation method of the first aspect or any example of the first aspect.

[0040] According to a sixth aspect of an embodiment of the present disclosure, there is provided a non-transitory computer-readable storage medium, the instructions of which, when executed by a processor of a mobile terminal, enable the mobile terminal to perform the transmission configuration state activation method of the first aspect or any example of the first aspect.

[0041] According to a seventh aspect of an embodiment of the present disclosure, there is provided a transmission configuration state activation device, the transmission configuration state activation device including a processor and a memory storing instructions executable by the processor, the processor being configured to execute the transmission configuration state activation method of the second aspect or any example of the second aspect.

[0042] According to an eighth aspect of an embodiment of the present disclosure, there is provided a non-transitory computer-readable storage medium, the instructions of which, when executed by a processor of a network device, enable a mobile terminal to perform the transmission configuration state activation method of the second aspect or any example of the second aspect described above. Effect of the Invention

[0043] The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: Send a media access control unit signaling for activating a transmission configuration state through one serving cell among all serving cells on the same frequency band of a terminal, and realize the activation of the transmission configuration states in all serving cells through the same media access control unit signaling, thereby reducing signaling overhead.

[0044] It should be noted that the above general description and the following detailed description are merely illustrative and explanatory and do not limit the present disclosure. [Brief description of the drawings]

[0045] The drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification serve to explain the principles of the present disclosure. [Figure 1] 1 is a schematic diagram of a wireless communication system according to an exemplary embodiment; [Diagram 2] 4 is a flowchart of a TCI state activation method according to an exemplary embodiment. [Diagram 3] 4 is a flowchart of a TCI state activation method according to an exemplary embodiment. [Figure 4] 1 is a method flowchart for determining all serving cells on the same band according to an exemplary embodiment; [Diagram 5] 1 is a method flowchart for determining all serving cells on the same band according to an exemplary embodiment; [Figure 6] 4 is a flowchart of a TCI state activation method according to an exemplary embodiment. [Figure 7] 4 is a flowchart of a TCI state activation method according to an exemplary embodiment. [Figure 8] 4 is a flowchart of a TCI state activation method according to an exemplary embodiment. [Figure 9] 4 is a flowchart of a TCI state activation method according to an exemplary embodiment. [Figure 10] 4 is a flowchart of a TCI state activation method according to an exemplary embodiment. [Figure 11] 4 is a flowchart of a TCI state activation method according to an exemplary embodiment. [Figure 12]FIG. 2 is a block diagram of a TCI state activation device according to an exemplary embodiment; [Figure 13] FIG. 2 is a block diagram of a TCI state activation device according to an exemplary embodiment; [Figure 14] FIG. 2 is a block diagram of an apparatus for TCI state activation according to an exemplary embodiment. [Figure 15] FIG. 2 is a block diagram of an apparatus for TCI state activation according to an exemplary embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0046] Exemplary embodiments will now be described in detail, examples of which are illustrated in the drawings. Where the following description refers to the drawings, the same numerals in different drawings represent the same or similar elements unless otherwise stated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure, as set forth in the appended claims.

[0047] The TCI state activation method provided by the embodiment of the present disclosure can be applied to the wireless communication system shown in Figure 1. As shown in Figure 1, the wireless communication system includes a network device and a terminal. The terminal is connected to the network device through a wireless resource and performs data transmission.

[0048] The wireless communication system illustrated in Fig. 1 is only a schematic description, and the wireless communication system may further include other network devices (not illustrated in Fig. 1), such as a core network device, a wireless relay device, and a wireless forwarding device. The embodiment of the present disclosure does not limit the number of network devices and the number of terminals included in the wireless communication system.

[0049] Furthermore, the wireless communication system of the embodiment of the present disclosure is a network that provides wireless communication functions. The wireless communication system may adopt different communication technologies, such as code division multiple access (CDMA), wideband code division multiple access (WCDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency-division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), and carrier sense multiple access with collision avoidance (Carrier Sense Multiple Access with Collision Avoidance). Based on factors such as capacity, speed, and time lag of different networks, the network may be divided into 2G (English: generation) network, 3G network, 4G network, or future evolution network such as 5G network, and 5G network may be referred to as New Radio (NR) network. For ease of explanation, the present disclosure may abbreviate the wireless communication network as network.

[0050] Further, the network device according to the present disclosure may also be referred to as a radio access network device. The radio access network device may be a base station, an evolved base station (evolved node B), a home base station, an access point (AP) in a wireless fidelity (WIFI) system, a radio relay node, a radio backhaul node, a transmission point (TP) or a transmission and reception point (TRP), etc., in a gNB in ​​an NR system, or may be a component or a part of a device constituting a base station. It should be understood that the embodiments of the present disclosure are not limited to a specific technology and a specific device form adopted by the network device. In the present disclosure, the network device provides communication coverage for a specific geographical area and can communicate with a terminal located within the communication coverage area (cell). In addition, in the case of a vehicle Internet (V2X) communication system, the network device may be an in-vehicle device.

[0051] Furthermore, the terminal according to the present disclosure may also be referred to as a terminal device, user equipment (UE), mobile station (MS), mobile terminal (MT), etc., and is a device for providing voice and / or data connectivity to a user. For example, the terminal may be a handheld device having a wireless connection function, an in-vehicle device, etc. Currently, some examples of terminals include a mobile phone, a pocket personal computer (PPC), a handheld computer, a personal digital assistant (PDA), a notebook computer, a tablet computer, a wearable device, or an in-vehicle device. In addition, in the case of a vehicle network (V2X) communication system, the terminal device may be an in-vehicle device. It should be understood that the embodiments of the present disclosure are not limited to a specific technology adopted by the terminal and a specific device form.

[0052] In NR, especially when the communication frequency band is in frequency range 2, high-frequency channels attenuate quickly, so beam-based transmission and reception is required between the terminal and the network device to ensure coverage.

[0053] In the related art, the beam management process of the physical downlink control channel (PDCCH) or physical downlink shared channel (PDSCH) in the downlink (DL) is as follows. When the random access of the terminal and the network device is completed and the RRC connection is established, the terminal performs measurement according to the measurement configuration of the network device, and the measurement result of the beam reported to the network device includes the reference signal (RS) type and RS index of the beam, and the layer 1 reference signal receiving power (L1-Reference Signal Receiving Power, L1-RSRP) or the signal to interference & noise ratio (L1-SINR) of the layer 1. The network device determines multiple TCI states based on the measurement results reported from the terminal. The TCI state includes an identifier (ID) of the TCI state, and an RS type and RS index corresponding to the TCI state. Currently, the number of TCI states is up to 64. The network device notifies the terminal of these 64 TCI states through RRC signaling, including the TCI state ID and the corresponding RS type and RS index. The TCI state is as shown in Table 1 below, and the terminal can determine the receiving beam according to the TCI state.

[0054] [Table 1]

[0055] For PDCCH, the network device activates one of 64 TCI states using MAC CE and indicates it to the terminal. For PDSCH, the network device activates a TCI state set (8 TCI states out of 64 TCI states) using MAC CE and indicates it to the terminal. The network device reuses Downlink Control Information (DCI) signaling to indicate one of the 8 activated TCI states to the terminal for the terminal to receive PDSCH. The TCI state of PDSCH scheduled in DCI signaling is to inform the terminal that the receiving beam used when receiving the PDSCH is the same as the receiving beam used when the received signal is strongest when the terminal receives the RS in the TCI state.

[0056] In the related art, a separate MAC CE is used for each CC / BWP to activate the TCI state. In a multiple CC / BWP scenario, a separate MAC CE is used for each CC / BWP to activate the TCI state, which results in large signaling overhead.

[0057] In view of this, the present disclosure provides a TCI state activation method, which activates the TCI states of PDCCHs on all CCs / BWPs on the same frequency band or a set of TCI states of PDSCHs on all CCs / BWPs on the same frequency band via one MAC CE.

[0058] FIG. 2 is a flowchart of a TCI state activation method according to an exemplary embodiment. As shown in FIG. 2, the TCI state activation method is used in a network device and includes the following steps S11 and S12.

[0059] In step S11, one serving cell that supports MAC CE transmission is selected from among all serving cells on the same band of the terminal.

[0060] In the present disclosure, multiple serving cells (i.e., CCs) are configured in the same band for a certain terminal, and each serving cell also has one initial bandwidth part (initial BWP) or active bandwidth part (active BWP). In the present disclosure, a network device selects one serving cell that supports MAC CE transmission from all serving cells on the same band, and activates the TCI state using MAC CE signaling on the initial BWP or active BWP of the terminal on the selected serving cell.

[0061] In the present disclosure, when the network device selects a serving cell, on the one hand, the network device randomly selects one serving cell among all serving cells on the same band of the terminal, or selects a designated serving cell among all serving cells on the same band of the terminal. In the present disclosure, the designated serving cell selected by the network device is, for example, a serving cell with the lowest carrier frequency among all serving cells on the same band, or the designated serving cell selected by the network device is a primary secondary cell (PSCell) or a primary cell (PCell) among all serving cells on the same band, or the designated serving cell selected by the network device is a serving cell that detects a channel to be idle in an unlicensed spectrum, and when the frequency band is an unlicensed frequency band, the network device needs to perform a listen-before-talk channel detection process for each serving cell of the terminal on the frequency band, and only the serving cell that detects a channel to be idle can be used for transmission, so the designated serving cell must be a serving cell that detects a channel to be idle.

[0062] In this disclosure, a network device activates a TCI state via MAC CE signaling sent from one serving cell, and the TCI state activated by the MAC CE may be a TCI state of a PDCCH or a TCI state set of a PDSCH.

[0063] In one embodiment, the network device needs to notify the terminal of all TCI states (e.g., 64 TCI states) in advance. For example, the network device notifies the terminal of all TCI states in advance based on RRC signaling. The TCI state activated via MAC CE signaling is one TCI state or a set of TCI states among all TCI states.

[0064] In step S12, send MAC CE signaling to activate the TCI state using the selected serving cell.

[0065] In the present disclosure, a network device can select one serving cell from all serving cells on the same band of a terminal and send MAC CE signaling to activate the TCI states of all serving cells, thereby reducing signaling overhead.

[0066] FIG. 3 is a flowchart of a TCI state activation method according to an exemplary embodiment. As shown in FIG. 3, the TCI state activation method is applied to a terminal, and includes the following steps S21 and S22.

[0067] In step S21, receive MAC CE signaling to activate the TCI state.

[0068] In the present disclosure, multiple serving cells, i.e., CCs, are configured in the same band for a certain terminal, and each serving cell also has one initial bandwidth portion (initial BWP) or active bandwidth portion (active BWP). According to one aspect of the present disclosure, a terminal determines a serving cell that supports reception and transmission of MAC CE signaling, receives MAC CE signaling via the determined serving cell, and receives MAC CE signaling using the initial BWP or active BWP of the determined serving cell.

[0069] The terminal determines a serving cell for receiving MAC CE signaling in one of the following manners: Receives MAC CE transmitted from all serving cells for supporting MAC CE transmission in all serving cells on the same frequency band of the terminal; Or, sets a serving cell preconfigured for the terminal based on the network device as the serving cell for receiving MAC CE signaling; Or, sets a primary secondary cell or a primary cell or a serving cell with the lowest carrier frequency or an unlicensed spectrum cell that has been detected as having an idle channel as the serving cell for receiving MAC CE signaling by default in all serving cells on the same frequency band.

[0070] In the present disclosure, the MAC CE signaling received by the terminal activates a TCI state, which may be a TCI state of a PDCCH or a TCI state set of a PDSCH.

[0071] In step S22, the TCI state activated by the received MAC CE is set as the TCI state of all serving cells on the same band.

[0072] In one example of the present disclosure, the terminal receives RRC signaling sent from the network device in advance, and determines all TCI states according to the RRC signaling. After receiving MAC CE signaling, the terminal sets the TCI state activated by the MAC CE as the TCI state of the PDCCH of all serving cells on the same band, or sets the TCI state set activated by the MAC CE as the TCI state set of the PDSCH of all serving cells on the same band.

[0073] In the present disclosure, a terminal receives a MAC CE and sets the TCI state activated by the received MAC CE as the TCI state of all serving cells on the same band, thereby reducing signaling overhead.

[0074] Furthermore, in this disclosure, the terminal needs to determine all serving cells on the same band.

[0075] In one embodiment, in the present disclosure, a network device transmits a configuration message in advance to inform a terminal of the bandwidth and carrier frequency location of each serving cell in all serving cells, and the terminal determines all serving cells on the same band according to the bandwidth and carrier frequency location of each serving cell.

[0076] FIG. 4 is a method flowchart for determining all serving cells on the same band according to an exemplary embodiment. As shown in FIG. 4, the method for determining all serving cells on the same band is used in a network device and includes step S31.

[0077] In step S31, a configuration message is sent to all serving cells of the terminal, indicating the bandwidth and carrier frequency location of each serving cell.

[0078] In one example of the present disclosure, the network device transmits the configuration message based on a system message and / or RRC signaling.

[0079] Furthermore, in the present disclosure, after the network device transmits the configuration message, the network device may select a serving cell and transmit MAC CE signaling. In the present disclosure, the network device may select a serving cell and transmit MAC CE signaling, and may not necessarily transmit the configuration message every time the network device selects a serving cell and transmits MAC CE signaling. The network device may transmit the configuration message every time, or may transmit the configuration message only once.

[0080] In the present disclosure, a network device sends a configuration message to a terminal indicating the bandwidth and carrier frequency location of each serving cell in all serving cells of the terminal, so that the terminal can determine all serving cells in the same band.

[0081] FIG. 5 is a flowchart of a method for determining all serving cells on the same band according to an exemplary embodiment. As shown in FIG. 5, the method for determining all serving cells on the same band is used in a terminal and includes steps S41 to S42.

[0082] In step S41, a configuration message is received in all serving cells of the terminal, indicating the bandwidth and carrier frequency location of each serving cell.

[0083] The configuration message includes system information and / or a serving cell configuration message, and if it is a primary cell, its bandwidth and carrier frequency location are obtained by the terminal receiving system information, and if it is a secondary cell, they are obtained by a secondary serving cell configuration message sent from the primary cell.

[0084] In one example of the present disclosure, the terminal receives the configuration message based on system information and / or RRC signaling.

[0085] In step S42, all serving cells in the same band are determined based on the bandwidth and carrier frequency position of each serving cell.

[0086] Furthermore, in the present disclosure, after receiving a terminal configuration message and determining all serving cells of the same band, a step of receiving MAC CE signaling for activating the TCI state and setting the TCI state activated by the MAC CE signaling as the TCI state of all serving cells of the same band can be executed. In the present disclosure, it is not limited whether or not to execute the step of receiving a configuration message and determining all serving cells of the same band every time the terminal receives MAC CE signaling and sets the TCI state activated by the MAC CE signaling as the TCI state of all serving cells of the same band, and the step of receiving a configuration message and determining all serving cells of the same band may be executed every time, or the step of receiving a configuration message and determining all serving cells of the same band may be executed only once.

[0087] In the present disclosure, the terminal receives a configuration message transmitted from a network device to indicate the bandwidth and carrier frequency location of each serving cell in all serving cells of the terminal, determines all serving cells in the same band, and further uses the TCI state activated by the received MAC CE for the TCI state of all serving cells in the same band, thereby saving signaling overhead.

[0088] Furthermore, in the present disclosure, when it is necessary to update the activated TCI state, for example, when the terminal channel conditions change (a new TCI state is determined based on measurement results fed back from the terminal), a BWP switch occurs in the terminal, a secondary cell (SCell) switch occurs in the terminal, a PCell or PSCell switch occurs in the terminal, a PCell or PScell ​​link failure occurs in the terminal, and a serving cell beam failure occurs in the terminal (beam failure), the MAC CE with the activated TCI state can be retransmitted via the network device.

[0089] In this disclosure, in order to distinguish between different MAC CE and TCI states before and after updating and to update the serving cell of the MAC CE, the MAC CE before the update is referred to as the first MAC CE. The TCI state activated by the first MAC CE is referred to as the first TCI state. The serving cell selected to transmit the first MAC CE is referred to as the first serving cell. The MAC CE related when performing the TCI state update is referred to as the second MAC CE. The TCI state activated by the second MAC CE is referred to as the second TCI state. The serving cell selected for the second MAC CE is referred to as the second serving cell.

[0090] FIG. 6 is a flowchart of a TCI state activation method according to an exemplary embodiment. As shown in FIG. 6, the TCI state activation method is used in a network device, and includes steps S51 to S54, where steps S51, S52, S53 are the same as step S31, and steps S32 and S33 are the same as step S31, and the present disclosure will not be described in detail here.

[0091] In step S54, send a second MAC CE signaling, where the second MAC CE signaling activates a second TCI state.

[0092] In the present disclosure, before transmitting the second MAC CE signaling, the network device needs to confirm that the TCI state needs to be updated, i.e., the second TCI state needs to be activated. The second TCI state needs to be activated if any one or combination of the following events occurs: the terminal channel condition changes (determined based on the measurement result fed back from the terminal), the terminal experiences a BWP switch, the terminal experiences a secondary cell (SCell) switch, the terminal experiences a PCell or PSCell switch, the terminal experiences a PCell or PScell ​​link failure, and the terminal experiences a serving cell beam failure.

[0093] In the present disclosure, when the terminal needs to perform a TCI state update, the network device retransmits a new MAC CE signaling (second MAC CE signaling) to activate a new TCI state, and facilitates the terminal to perform the TCI state update.

[0094] In the present disclosure, after the network device sends a second MAC CE signaling to the terminal, when the terminal receives the MAC CE signaling, the network device can update the first TCI state to the second TCI state activated by the second MAC CE signaling.

[0095] However, when a BWP switch, a secondary cell (SCell) switch, a PCell or PSCell switch, a PCell or PSCell link failure, and a serving cell beam failure occur in the UE, how the UE processes the TCI state is a problem to be solved. Hereinafter, the present disclosure will exemplarily describe such cases.

[0096] Case 1: BWP switching occurs

[0097] 7 is a flowchart of a TCI state activation method according to an exemplary embodiment. As shown in FIG 7, the TCI state activation method is applied to a terminal and includes steps S61 to S69.

[0098] In step S61, a configuration message is received in all serving cells of the terminal, indicating the bandwidth and carrier frequency location of each serving cell.

[0099] In step S62, all serving cells in the same band are determined based on the bandwidth and carrier frequency position of each serving cell.

[0100] In step S63, determine one first serving cell in all serving cells, and receive a first MAC CE signaling for activating a first TCI state using the initial BWP or active BWP of the first serving cell.

[0101] In step S64, the first TCI state activated by the first MAC CE signaling is set as the TCI state of all serving cells in the same band.

[0102] In step S65, it is determined that a BWP switch has occurred, and it is determined whether a second MAC CE signaling for activating a second TCI state sent from the network device has been received.

[0103] In the present disclosure, if a BWP switch occurs in any serving cell among all serving cells in the same band, it is determined that a BWP switch has occurred. In the present disclosure, the occurrence of a BWP switch in a terminal can be understood as the terminal receiving a newly scheduled BWP by a network device and switching from the original BWP to the newly scheduled BWP.

[0104] In the present disclosure, the first TCI state activated by the first MAC CE signaling is a TCI state of the PDCCH or a TCI state set of the PDSCH, and correspondingly, the second TCI state activated by the second MAC CE signaling is a TCI state of the PDCCH or a TCI state set of the PDSCH.

[0105] In the present disclosure, if the terminal does not receive second MAC CE signaling for activating a second TCI state sent from a network device and the first TCI state activated by the first MAC CE signaling is a TCI state set of a PDCCH, the terminal performs step S66. In the present disclosure, if the terminal does not receive second MAC CE signaling for activating a second TCI state sent from a network device and the first TCI state activated by the first MAC CE signaling is a TCI state set of a PDSCH, the terminal performs steps S67 and S68.

[0106] In step S66, in the post-switching BWP, the PDCCH transmitted in the post-switching BWP is received using the first TCI state.

[0107] In step S67, DCI signaling is received.

[0108] In the present disclosure, the received DCI signaling indicates one TCI state among the first TCI states, however, the DCI signaling is received in a BWP before the switch in the serving cell, or is received in a BWP after the switch in the serving cell, or is received in a BWP in another serving cell (e.g., in case of cross-carrier scheduling). If the first TCI state is a TCI state set of PDSCH, the received DCI signaling indicates one TCI state in the TCI state set.

[0109] In step S68, the PDSCH transmitted in the switched BWP is received using the TCI state indicated by the DCI.

[0110] In the present disclosure, when the terminal receives a second MAC CE signaling for activating a second TCI state sent from the network device, it performs step S69.

[0111] In step S69, the first TCI state activated by the first MAC CE signaling is updated to a second TCI state activated by the second MAC CE signaling.

[0112] In the present disclosure, when any serving cell BWP switching of the terminal occurs, the network device schedules RBs on the new BWP and transmits PDSCH to the terminal, and if there is no new MAC signaling to activate a new TCI state (or TCI state set) during this time, for PDCCH, the terminal receives the PDCCH transmitted in the new BWP based on the TCI state of the PDCCH on the BWP activated by MAC signaling before in the new BWP. However, for the TCI state set of the PDSCH, the TCI state set of the PDSCH on the BWP activated by MAC signaling before is also used. However, receiving DCI signaling of the PDSCH indicating one TCI state in the TCI state set activated by MAC signaling may be transmitted by the BWP before switching, may be transmitted by the new BWP after the terminal switches to the new BWP, or may be transmitted by the BWP on another serving cell in the case of cross-carrier scheduling. The terminal determines the TCI state for receiving the PDSCH on the new BWP by combining the DCI signaling for scheduling the PDSCH on the new BWP with the TCI state set activated by the original MAC signaling, until a new PDCCH TCI state or a new PDSCH TCI state set reactivated by new MAC signaling appears.

[0113] Case 2: SCell switching occurs

[0114] 8 is a flowchart of a TCI state activation method according to an exemplary embodiment. As shown in FIG 8, the TCI state activation method is applied to a terminal and includes steps S71 to S76.

[0115] In step S71, a configuration message is received in all serving cells of the terminal, indicating the bandwidth and carrier frequency location of each serving cell.

[0116] In step S72, all serving cells in the same band are determined based on the bandwidth and carrier frequency position of each serving cell.

[0117] In step S73, determine one first serving cell in all serving cells, and receive a first MAC CE signaling for activating a first TCI state using the initial BWP or active BWP of the first serving cell.

[0118] In step S74, the first TCI state activated by the first MAC CE signaling is set as the TCI state of all serving cells in the same band.

[0119] In step S75, it is determined that a SCell switch has occurred.

[0120] In the present disclosure, a terminal determines that a switch has occurred to any one of all SCells in the same band, and that a SCell switch has occurred.

[0121] In step S76, the first TCI state on the SCell before switching is reused in the SCell after switching.

[0122] In the present disclosure, the first TCI state activated by the first MAC CE signaling is a TCI state of the PDCCH or a TCI state set of the PDSCH, and correspondingly, the second TCI state activated by the second MAC CE signaling is a TCI state of the PDCCH or a TCI state set of the PDSCH.

[0123] In the present disclosure, when an SCell switching occurs in the same band, the switched SCell also needs to reuse the PDCCH TCI state and PDSCH TCI state set activated by the first MAC CE signaling on the original SCell.

[0124] Case 3: PSCell or PCell switching occurs

[0125] 9 is a flowchart of a TCI state activation method according to an exemplary embodiment. As shown in FIG 9, the TCI state activation method is applied to a terminal and includes steps S81 to S86.

[0126] In step S81, a configuration message is received in all serving cells of the terminal, indicating the bandwidth and carrier frequency location of each serving cell.

[0127] In step S82, all serving cells in the same band are determined based on the bandwidth and carrier frequency position of each serving cell.

[0128] In step S83, determine one first serving cell in all serving cells, and receive a first MAC CE signaling for activating a first TCI state using the initial BWP or active BWP of the first serving cell.

[0129] In step S84, the first TCI state activated by the first MAC CE signaling is set as the TCI state of all serving cells in the same band.

[0130] In step S85, it is determined that a PSCell or PCell switch has occurred.

[0131] In step S86, receive the second MAC CE signaling, and update the first TCI states of all serving cells to the second TCI states activated by the second MAC CE signaling.

[0132] In the present disclosure, the first TCI state activated by the first MAC CE signaling is a TCI state of the PDCCH or a TCI state set of the PDSCH, and correspondingly, the second TCI state activated by the second MAC CE signaling is a TCI state of the PDCCH or a TCI state set of the PDSCH.

[0133] In the present disclosure, when a switch occurs to a PSCell or PCell in the same band, the TCI state needs to be reconfigured, and therefore the TCI state of all CC / BWPs on that band needs to be updated, i.e., the TCI state needs to be reconfigured using new RRC signaling, MAC CE signaling, etc.

[0134] Case 4: Beam failure occurs

[0135] 10 is a flowchart of a TCI state activation method according to an exemplary embodiment. As shown in FIG 10, the TCI state activation method is applied to a terminal and includes steps S91 to S96.

[0136] In step S91, a configuration message is received in all serving cells of the terminal, indicating the bandwidth and carrier frequency location of each serving cell.

[0137] In step S92, all serving cells in the same band are determined based on the bandwidth and carrier frequency position of each serving cell.

[0138] In step S93, determine one first serving cell in all serving cells, and receive a first MAC CE signaling for activating a first TCI state using the initial BWP or active BWP of the first serving cell.

[0139] In step S94, the first TCI state activated by the first MAC CE signaling is set as the TCI state of all serving cells in the same band.

[0140] In step S95, it is determined that there is a serving cell in which a beam failure has occurred, and the TCI state of the serving cell in which the beam failure has occurred is re-determined.

[0141] In the present disclosure, when a beam failure occurs in one serving cell in the same band, this corresponds to the need to update the TCI state of the PDCCH on the corresponding SCell, and the TCI state is re-determined when the terminal receives the TCI state of the PDCCH on the corresponding SCell or the TCI state set of the PDSCH.

[0142] The TCI state of the PDCCH may be determined by the terminal itself through measurement. For example, on the one hand, when the terminal detects that an SSB for discovering a new beam has a high RSRP and / or SINR, the terminal transmits a corresponding random access preamble on a physical random access channel (PRACH) corresponding to the SSB, so that the network device can determine whether it is appropriate to transmit a PDCCH to the terminal using the same beam as the SSB, or to transmit a PDSCH. On the other hand, the terminal may report a measurement result to the network device through measurement, or report a selected new beam ID to the network device, and then the network device may transmit a PDCCH or a PDSCH to the terminal using one or more of the one or more reported from the terminal.

[0143] In step S96, it is determined whether a second MAC CE signaling for activating a second TCI state sent from the network device is received.

[0144] If the terminal has not received the second TCI state activated by the second MAC CE, execute step S97. If the terminal has received the second TCI state activated by the second MAC CE, execute step S98.

[0145] In step S97, the TCI states of all serving cells other than the serving cell in which the beam failure occurred are updated to the TCI states redetermined by the serving cell in which the beam failure occurred, or the TCI states of all serving cells other than the serving cell in which the beam failure occurred are maintained.

[0146] In step S98, the first TCI state activated by the first MAC CE signaling is updated to a second TCI state activated by the second MAC CE signaling.

[0147] In the present disclosure, when a beam failure occurs in one serving cell in the same band, the terminal re-determines the TCI state of the PDCCH or the TCI state set of the PDSCH on the SCell. The TCI state of the PDCCH may be determined by the terminal through measurement. In this case, since it is not MAC CE signaling that reactivates a new TCI state for the SCell in which the beam failure occurs, the serving cells other than the serving cell in which the beam failure occurs in the band may have two options. One is to continue to use the TCI state or TCI state set activated by the previous MAC signaling. The other is to use the same TCI state as the serving cell of the beam failure. When the base station uses new MAC signaling to activate a new TCI state for the serving cell in which the beam failure occurs, all serving cells in the same band, i.e., CC / BWP, use the TCI state activated by the new MAC.

[0148] Case 5: Link failure occurs

[0149] The occurrence of a link failure in the UE indicates that the TCI state of the PDCCH of the UE's PCell or PSCell needs to be updated. In this case, there may be two ways for the TCI state of a serving cell other than the PCell or PSCell before receiving the second TCI state activated by the second MAC CE. One is to continue to use the first TCI state activated by the first MAC CE. The other is to use the same TCI state as the TCI state in the redetermined PCell or PSCell.

[0150] 11 is a flowchart of a TCI state activation method according to an exemplary embodiment. As shown in FIG 11, the TCI state activation method is used for interaction between a terminal and a network device, and includes steps S101 to S109.

[0151] In step S101, the network device selects one first serving cell from among all serving cells on the same band of the terminal, and the selected first serving cell supports transmission of MAC CE signaling.

[0152] In step S102, the network device uses the selected one first serving cell to send a first MAC CE signaling for activating a first TCI state. The terminal receives the first MAC CE.

[0153] In step S103, the network device sends a configuration message indicating the bandwidth and carrier frequency location of each serving cell in all serving cells of the terminal. The terminal receives the configuration message sent from the network device.

[0154] In step S104, the terminal determines all serving cells in the same band according to the bandwidth and carrier frequency location of each serving cell in the configuration message.

[0155] In the present disclosure, steps S103 and S104 are optional steps, and steps S103 and S104 may occur before step S101. For example, if the terminal adopts a predefined scheme to determine all serving cells in the same band, it does not need to perform steps S103 and S104.

[0156] In step S105, the terminal sets the first TCI state as the TCI state of all serving cells on the same band.

[0157] In the present disclosure, after the terminal sets the first TCI state as the TCI state of all serving cells on the same band, the actual application scenario may include the following steps.

[0158] In step S106a, if it is determined that a BWP switching has occurred in any serving cell and no second MAC CE signaling has been received, in the switched BWP, the physical downlink control channel transmitted in the switched BWP is received using the first TCI state. If the second MAC CE signaling has been received, the first TCI state is updated to the second TCI state.

[0159] In step S106b, if it is determined that a BWP switch has occurred in any serving cell and no second MAC CE signaling has been received, receive a DCI indicating one of the first TCI states; receive a physical downlink shared channel transmitted in the switched BWP using the TCI state indicated by the DCI; and update the first TCI state to the second TCI state if the second MAC CE signaling has been received.

[0160] If it is determined in step S107 that a SCell switching has occurred, the first TCI state on the SCell before the switching is reused in the SCell after the switching.

[0161] In step S108, if it is determined that a PCell or PSCell switch has occurred, receive second MAC CE signaling, and update the first TCI states of all serving cells to the second TCI states activated by the second MAC CE signaling.

[0162] In step S109, if it is determined that there is a serving cell in which a beam failure has occurred, the TCI state of the serving cell in which the beam failure has occurred is redetermined. If the second TCI state activated by the second MAC CE signaling is not received, the TCI states of the serving cells other than the serving cell in which the beam failure has occurred in all serving cells are updated to the TCI state redetermined by the serving cell in which the beam failure has occurred, or the TCI states of the serving cells other than the serving cell in which the beam failure has occurred in all serving cells are maintained as they are. If the second MAC CE signaling is received, the first TCI state is updated to the second TCI state.

[0163] In the TCI state activation method in the interaction between a terminal and a network device of the present disclosure, the terminal and the network device respectively have the method in TCI state activation performed for the terminal and the network device according to the above embodiment of the present disclosure. In the insufficient description of the TCI state activation method in the interaction between a terminal and a network device of the present disclosure, please refer to the description of the related embodiment, and the description will be omitted here.

[0164] Based on a similar concept, an embodiment of the present disclosure further provides a TCI state activation device.

[0165] The TCI state activation device provided by the embodiments of the present disclosure includes a hardware configuration and / or a software module for performing each function to realize the above functions. In conjunction with the units and algorithm steps of each embodiment disclosed in the present disclosure, the embodiments of the present disclosure can be realized in hardware or a combination of hardware and computer software. Whether a function is performed by hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can realize the described functions using different methods for each specific application, but such realization should not be considered to go beyond the scope of the technical solution of the embodiments of the present disclosure.

[0166] 12 is a block diagram of a TCI state activation apparatus 100 according to an exemplary embodiment. Referring to FIG. 12, the TCI state activation apparatus 100 is applied to a terminal and includes a receiving unit 101 and a processing unit 102.

[0167] The receiving unit 101 is configured to receive a first MAC CE signaling activating a first TCI state, and the processing unit 102 is configured to set the first TCI state as the TCI state of all serving cells on the same frequency band.

[0168] In one embodiment, the first TCI state is a TCI state of a PDCCH.

[0169] The processing unit 102 is further configured to determine whether a BWP switch has occurred.

[0170] The receiving unit 101 is further configured to receive, in the post-switched BWP, a PDCCH transmitted in the post-switched BWP using the first TCI state when the processing unit 102 determines that a BWP switch has occurred on any serving cell and the receiving unit 101 has not received a second MAC CE signaling for activating the second TCI state.

[0171] In another embodiment, the first TCI state is a set of TCI states for a PDSCH.

[0172] The processing unit 102 is further configured to determine whether a BWP switch has occurred.

[0173] The receiving unit 101 is further configured to, when the processing unit 102 determines that a BWP switch has occurred on any serving cell and the receiving unit 101 has not received a second MAC CE signaling, receive a DCI and receive a PDSCH transmitted in the switched BWP using a TCI state indicated by the DCI, where the second MAC CE signaling activates a second TCI state and the DCI indicates one of the first TCI states.

[0174] In another embodiment, the processing unit 102 is further configured to determine whether a SCell switch has occurred, and if it is determined that a SCell switch has occurred, to reuse the first TCI state on the pre-switched SCell in the post-switched SCell.

[0175] In another embodiment, the processing unit 102 is further configured to determine whether a PCell or primary SCell switch has occurred.

[0176] The receiving unit 101 is further configured to, when the processing unit 102 determines that a PCell or primary SCell switch has occurred, receive a second MAC CE signaling and update the first TCI states of all serving cells to the second TCI states activated by the second MAC CE signaling.

[0177] In another embodiment, the processing unit 102 is configured to determine whether there is a serving cell in which a beam failure occurs.

[0178] If it is determined that a serving cell in which a beam failure has occurred exists, the TCI state of the serving cell in which the beam failure has occurred is redetermined, and the TCI states of serving cells other than the serving cell in which the beam failure has occurred in all serving cells are updated to the TCI state redetermined by the serving cell in which the beam failure has occurred before the receiving unit 101 receives the second TCI state activated by the second MAC CE signaling, or the TCI states of serving cells other than the serving cell in which the beam failure has occurred in all serving cells are maintained as they are.

[0179] In another embodiment, the receiving unit 101 is configured to receive a second MAC CE signaling, where the second MAC CE signaling activates a second TCI state.

[0180] The processing unit 102 is further configured to update the first TCI state to the second TCI state when the receiving unit 101 receives a second MAC CE signaling.

[0181] In another embodiment, the receiving unit 101 is configured to use an initial BWP of the determined first serving cell or activate a BWP to receive the first MAC CE signaling.

[0182] In another embodiment, the receiving unit 101 is further configured to receive a configuration message indicating a bandwidth and a carrier frequency location of each serving cell in all serving cells of the terminal, and the processing unit 102 is further configured to determine all serving cells on the same frequency band using the bandwidth and the carrier frequency location.

[0183] 13 is a block diagram of a TCI state activation apparatus 200 according to an exemplary embodiment. Referring to FIG. 13, the TCI state activation apparatus 200 is applied to a network device and includes a processing unit 201 and a sending unit 202.

[0184] The processing unit 201 is configured to select, among all serving cells on the same frequency band of the terminal, one first serving cell that supports transmitting MAC CE signaling.

[0185] The sending unit 202 is configured to send, using the selected one first serving cell, a first MAC CE signaling to activate a first TCI state.

[0186] In one embodiment, the processing unit 201 is configured to randomly select one first serving cell from among all serving cells on the same frequency band of the terminal, or select a designated first serving cell from among all serving cells on the same frequency band of the terminal.

[0187] The designated first serving cell is the serving cell with the lowest carrier frequency among all serving cells, or the designated first serving cell is the primary SCell or PCell among all serving cells, or the designated first serving cell is the serving cell that detects the channel to be idle in the unlicensed spectrum.

[0188] In another embodiment, the sending unit 202 is configured to send the MAC CE signaling using an initial BWP or activating a BWP on the selected first serving cell.

[0189] In another embodiment, the sending unit 202 is further configured to send a second MAC CE signaling to activate a second TCI state.

[0190] In another embodiment, the processing unit 201 is further configured to determine that any one or combination of the following events has occurred before the transmitting unit 202 transmits the second MAC CE signaling: a terminal channel condition changes, a terminal experiences a BWP switch, a terminal experiences a SCell switch, a terminal experiences a PCell or PSCell switch, a terminal experiences a PCell or PScell ​​link failure, and a terminal experiences a serving cell beam failure.

[0191] In another embodiment, the sending unit 202 is further configured to send a configuration message to inform the terminal of the bandwidth and carrier frequency location of each serving cell in all the serving cells.

[0192] The first TCI state includes a TCI state of a PDCCH or a set of TCI states of a PDSCH.

[0193] The specific manner in which each module of the apparatus in the above embodiment performs the operation has already been described in detail in the embodiment relating to the method, and will not be described in detail here.

[0194] 14 is a block diagram of an apparatus 300 for TCI state activation according to an example embodiment. For example, the apparatus 300 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0195] Referring to FIG. 14, the device 300 may include one or more components: a processing component 302, a memory 304, a power component 306, a multimedia component 308, an audio component 310, an input / output (I / O) interface 312, a sensor component 314, and a communication component 316.

[0196] The processing component 302 typically controls the overall operation of the device 300, such as operations related to display, phone calls, data communication, camera operation, and recording operations. The processing component 302 may include one or more processors 820 for executing instructions to complete all or some of the steps of the above methods. The processing component 302 may also include one or more modules to facilitate processing of interactions with other components. For example, the processing component 302 may include a multimedia module to facilitate interaction between the multimedia component 308 and the processing component 302.

[0197] Memory 304 is configured to store various types of data to support operation on device 300. Examples of these data include instructions for any application programs or methods for operating on device 300, contact data, phone book data, messages, images, videos, etc. Memory 304 may be implemented by any type of volatile or non-volatile storage device or combinations thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, flash memory, magnetic disk, or optical disk.

[0198] The power component 306 provides power for the various components of the device 300. The power component 306 can include a power management system, one or more power sources, and other components related to generating, managing, and allocating power for the device 300.

[0199] The multimedia component 308 includes a screen that provides an output interface between the device 300 and a user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). When the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel may include one or more touch sensors to sense touch, slide, and touch panel gestures. The touch sensor may sense the boundaries of a touch or slide motion, as well as detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 308 includes a front camera and / or a back camera. When the device 300 is in an operation mode, such as a photo mode or a video mode, the front camera and / or the back camera may receive external multimedia data. Each front camera and back camera may be a fixed optical lens system or may have a focal length and optical zoom capability.

[0200] The audio component 310 is configured to output and / or input audio signals. For example, the audio component 310 includes a microphone (MIC) configured to receive external audio signals when the device 300 is in an operation mode such as a call mode, a record mode, and a voice recognition mode. The received audio signals may be further stored in the memory 304 or transmitted via the communication component 316. In some embodiments, the audio component 310 further includes a speaker for outputting audio signals.

[0201] The I / O interface 312 provides an interface between the processing component 302 and a peripheral interface module, which may be a keyboard, a click wheel, buttons, etc. These buttons may include, but are not limited to, a home button, volume buttons, a start button, and a lock button.

[0202] The sensor component 314 includes one or more sensors to provide various aspects of status assessment for the device 300. For example, the sensor component 314 can detect the on / off state of the device 300, the relative positioning of the components, e.g., the display and keypad of the device 300, and the sensor component 314 can further detect the position change of the device 300 or one of the components of the device 300, the presence or absence of contact between the user and the device 300, the orientation or acceleration / deceleration of the device 300, and the temperature change of the device 300. The sensor component 314 can also include a proximity sensor configured to detect the presence of a nearby object in the absence of any physical contact. The sensor component 314 can further include an optical sensor, such as a CMOS or CCD image sensor used for imaging applications. In some embodiments, the sensor component 314 can further include an acceleration sensor, a gyro sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0203] The communication component 316 is configured to facilitate wired or wireless communication between the device 300 and other devices. The device 300 can access a wireless network based on a communication standard, such as WiFi, 2G, or 3G, or a combination thereof. In an exemplary embodiment, the communication component 316 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 316 further includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra-Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0204] In an exemplary embodiment, the apparatus 300 may be implemented by an application specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), a field programmable gate array (FPGA), a controller, a microcontroller, a microprocessor, or other electronic components, one or more applications to perform the above methods.

[0205] In an exemplary embodiment, a non-transitory computer readable storage medium containing instructions is further provided, such as memory 304 containing instructions, which may be executed by processor 820 of device 300 to complete the method. For example, the non-transitory computer readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, or an optical data storage device.

[0206] FIG. 15 is a block diagram of an apparatus 400 for TCI state activation according to an exemplary embodiment. For example, the apparatus 400 can be provided as a server. With reference to FIG. 15, the apparatus 400 includes a processing component 422 including one or more processors and memory resources represented by a memory 432 for storing instructions executed by the processing component 422, such as application programs. The application programs stored in the memory 432 can include one or more modules, each corresponding to a set of instructions. Also, the processing component 422 is configured to execute instructions to perform the above method.

[0207] The device 400 may further include a power component configured to perform power management of the device 400, a wired or wireless network interface 450 configured to connect the device 400 to a network, and an input / output (I / O) interface 458. The device 400 may operate an operating system stored in memory 432, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, or similar.

[0208] In an exemplary embodiment, a non-transitory computer readable storage medium containing instructions, such as a memory 404 containing instructions, may be provided, which may be executed by the processor 420 of the device 400 to complete the method. For example, the non-transitory computer readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, or an optical data storage device.

[0209] Furthermore, it should be understood that "plurality" in this disclosure means two or more, and other counter words are similar. "And / or" describes a relation between related objects and can represent that three relations can exist. For example, a statement A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " usually represents an "or" relation between the related objects before and after. The singular forms "a," "the," and "the" are also intended to include the plural, unless the context clearly indicates otherwise.

[0210] Further, it should be understood that while terms such as "first," "second," and the like, are used to describe various pieces of information, these pieces of information should not be limited to these terms. These terms are used merely to distinguish between similar types of information and do not imply any particular order or importance. In fact, terms such as "first," "second," and the like, can be used completely interchangeably. For example, the first piece of information could be referred to as the second piece of information, and similarly, the second piece of information could be referred to as the first piece of information, without departing from the scope of this disclosure.

[0211] Additionally, although embodiments of the present disclosure describe operations in a particular order in the figures, it should not be understood that these operations must be performed in the particular order illustrated, or in a serial order, or that all operations must be performed to achieve desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0212] Those skilled in the art may easily conceive other implementations of the present disclosure after studying the specification and practicing the invention disclosed in the specification. The present disclosure is intended to cover any modifications, uses or adaptations of the present disclosure, which modifications, uses or adaptations follow the general principles of the present disclosure and include common general knowledge or commonly used technical means in the art that are not disclosed in the present disclosure. The specification and examples are considered to be merely exemplary, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0213] It should be noted that the present disclosure is not limited to the exact structure described above and illustrated in the drawings, and various modifications and variations can be made without departing from the scope of the present disclosure, which is limited only by the scope of the appended claims.

Claims

1. A transmission configuration state activation method, applied to a terminal, comprising: receiving a first media access control signaling activating a first transmission configuration state; setting the first transmission configuration state as a transmission configuration state of all serving cells on the same frequency band; receiving a downlink control signaling when the first transmission configuration state is a transmission configuration state set of a physical downlink shared channel, the downlink control signaling scheduling a physical downlink shared channel of a bandwidth portion after switching and indicating one of the first transmission configuration states; determining that a bandwidth portion switch has occurred in any serving cell and, if a second media access control unit signaling activating a second transmission configuration state has not been received, receiving a physical downlink shared channel transmitted in the switched bandwidth portion using the one transmission configuration state indicated by the downlink control signaling; A method for activating a transmission configuration state, comprising:

2. When the first transmission configuration state is a transmission configuration state of a physical downlink control channel, After the first transmission configuration state is set as the transmission configuration state of all serving cells on the same frequency band, the transmission configuration state activation method includes: determining that a bandwidth fraction switch has occurred in any serving cell and not receiving the second media access control unit signaling activating the second transmission configuration state; receiving, in the switched-over bandwidth portion, a physical downlink control channel transmitted in the switched-over bandwidth portion using the first transmission configuration state; 2. The method of claim 1, further comprising:

3. After the first transmission configuration state is set as the transmission configuration state of all serving cells on the same frequency band, the transmission configuration state activation method includes: When it is determined that a secondary cell switch has occurred, the method further includes reusing the first transmission configuration state on the pre-switch secondary cell in the post-switch secondary cell.

2. The method of claim 1, further comprising:

4. After the first transmission configuration state is set as the transmission configuration state of all serving cells on the same frequency band, the transmission configuration state activation method includes: If it is determined that a primary cell or primary secondary cell switch has occurred, receiving the second media access control unit signaling and updating the first transmission configuration state of all the serving cells to the second transmission configuration state activated by the second media access control unit signaling.

2. The method of claim 1, further comprising:

5. After the first transmission configuration state is set as the transmission configuration state of all serving cells on the same frequency band, the transmission configuration state activation method includes: When it is determined that a serving cell in which a beam failure has occurred exists, re-determine a transmission configuration state of the serving cell in which the beam failure has occurred, and before receiving the second transmission configuration state activated by the second media access control control unit signaling, The method further includes updating a transmission configuration state of a serving cell other than the serving cell in which the beam failure occurs among all the serving cells to a transmission configuration state re-determined by the serving cell in which the beam failure occurs, or maintaining a transmission configuration state of a serving cell other than the serving cell in which the beam failure occurs among all the serving cells.

2. The method of claim 1, further comprising: receiving the second media access control unit signaling activating the second transmission configuration state; updating the first transmission configuration state to the second transmission configuration state. The transmission configuration state activation method according to claim 2 or 5, How to do this.

7. The step of receiving the first media access control control unit signaling comprises: receiving the first media access control unit signaling using an initial bandwidth portion or an active bandwidth portion of the determined first serving cell; A method for activating a transmission configuration state according to any one of claims 1 to 6.

8. Before receiving the first media access control control unit signaling, the transmission configuration state activation method includes: receiving a configuration message indicating a bandwidth and carrier frequency location of each serving cell of all the serving cells of the terminal; and determining all of the serving cells on the same frequency band using the bandwidth and the carrier frequency location. A method for activating a transmission configuration state according to any one of the preceding claims.

9. A transmission configuration state activation method applied to a network device, comprising: selecting one first serving cell that supports transmitting a media access control unit signaling among all serving cells on the same frequency band of the terminal; transmitting a first media access control signaling using the selected one of the first serving cells to activate a first transmission configuration state; sending a downlink control signaling when the first transmission configuration state is a transmission configuration state set of a physical downlink shared channel, the downlink control signaling scheduling a physical downlink shared channel of a bandwidth portion after switching and indicating one of the first transmission configuration states; determining that a bandwidth portion switching of the terminal has occurred in any serving cell and, if the terminal has not sent a second media access control signaling activating a second transmission configuration state, transmitting the physical downlink shared channel in the switched bandwidth portion using the one transmission configuration state indicated by the downlink control signaling; A method for activating a transmission configuration state, comprising:

10. The step of selecting one first serving cell from all serving cells on the same frequency band of the terminal includes: Randomly selecting one of the first serving cells from among all the serving cells on the same frequency band of the terminal; or selecting a designated first serving cell from among all the serving cells on the same frequency band of the terminal; 10. The method of claim 9, further comprising:

11. The designated first serving cell is a serving cell having the lowest carrier frequency among all the serving cells; or The designated first serving cell is a primary secondary cell or a primary cell among all the serving cells; or the designated first serving cell is a serving cell that detects a channel in an unlicensed spectrum to be idle; 11. The method of claim 10, further comprising:

12. The first transmission configuration state is: A transmission configuration state of a physical downlink control channel or a transmission configuration state set of a physical downlink shared channel, 10. The method of claim 9, further comprising:

13. transmitting a physical downlink control channel in a post-switching bandwidth portion using the first transmission configuration state when the first transmission configuration state is a transmission configuration state of a physical downlink control channel and when determining that a bandwidth portion switching of the terminal has occurred in any serving cell and has not transmitted the second media access control unit signaling for activating the second transmission configuration state.

10. The method of claim 9, further comprising:

14. A transmission configuration state activation device, comprising: A processor; a memory storing instructions executable by said processor; The processor is configured to execute a transmission configuration state activation method according to any one of claims 1 to 8. A transmission configuration state activation device comprising:

15. A transmission configuration state activation device, comprising: A processor; a memory storing instructions executable by said processor; The processor is adapted to detect a transmission configuration state according to any one of claims 9 to 13. configured to perform an activation method; A transmission configuration state activation device comprising:

16. A non-transitory computer readable storage medium, the instructions of which, when executed by a processor of a terminal, enable said terminal to perform the transmission configuration state activation method according to any one of claims 1 to 8. A non-transitory computer-readable storage medium comprising:

17. A non-transitory computer readable storage medium, the instructions of which, when executed by a processor of a network device, enable said network device to perform the transmission configuration state activation method according to any one of claims 9 to 13. A non-transitory computer-readable storage medium comprising:

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