CN117859356A

CN117859356A - Method, device, equipment and readable storage medium for activating secondary cell

Info

Publication number: CN117859356A
Application number: CN202280003061.6A
Authority: CN
Inventors: 胡子泉; 陶旭华
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-08-09
Filing date: 2022-08-09
Publication date: 2024-04-09
Also published as: WO2024031393A1

Abstract

The present disclosure provides a method, apparatus, device, and readable storage medium for activating a secondary cell. The method of activating the secondary cell is performed by a user equipment and comprises: receiving first configuration information sent by network equipment, wherein the first configuration information is used for configuring Tracking Reference Signals (TRSs) which are used for activating secondary cells; and receiving a command for activating a secondary cell and information for activating a transmission configuration indication TCI sent by the network equipment.

Description

Method, device, equipment and readable storage medium for activating secondary cell

Technical Field

The present disclosure relates to wireless communication technology, and in particular, to a method, apparatus, device, and readable storage medium for activating a secondary cell.

Background

In related art, in a communication system based on carrier aggregation (Carrier Aggregation, CA) and other technologies, a ue can support simultaneous access to multiple cells, and for a Secondary Cell (SCell) activation delay is defined in 3GPP (The 3rd Generation Partner Project, third generation partnership project) standard for a Secondary Cell to which The ue is accessed. The secondary cell activation includes known secondary cell activation and unknown secondary cell activation. Before the secondary cell is activated, when the user equipment reports the measurement information of the secondary cell to the network equipment within a period of time agreed by the protocol, and the secondary cell is detectable within a cell identification time agreed by the protocol, the secondary cell is considered to be a known secondary cell. In addition, for FR2 (Frequency Range) secondary cells, the transmission configuration indication (Transmission Configuration Indicator, TCI) activation in the secondary cell activation procedure is determined based on synchronization blocks (Synchronization Signal/PBCH block, SSB) or channel state information Reference signals (Channel State Information-Reference signals, CSI-RS) reported by the user equipment. Otherwise, the secondary cell is considered to be an unknown secondary cell.

When performing secondary cell activation based on SSB, the secondary cell activation delay is long because SSB measurements are limited by SSB measurement timing configuration (SSB Measurement Timing Configuration, SMTC) and the SMTC period is relatively long, typically 20ms, 40ms or 80ms, especially for FR2, the user equipment also needs to perform beam scanning to determine the best beam.

Disclosure of Invention

The present disclosure provides a method, apparatus, device, and readable storage medium for activating a secondary cell.

In a first aspect, a method of activating a secondary cell is provided, performed by a user equipment, the method comprising:

receiving first configuration information sent by network equipment, wherein the first configuration information is used for configuring Tracking Reference Signals (TRSs) which are used for activating secondary cells;

receiving a command for activating a secondary cell and information for activating a Transmission Configuration Indication (TCI) of the TRS, which are sent by a network device;

and executing an activation flow corresponding to the command for activating the secondary cell according to the TRS.

In some possible implementations, the first configuration information is further used to configure the TCI of the downlink physical channel to be the same as the TCI of the TRS.

In some possible embodiments, the first configuration information is further configured to configure the TCI of the TRS and the synchronization signal block SSB to form a QCL relationship, where the SSB is an SSB of a special cell or an SSB used by an activated secondary cell, where the special cell includes a primary cell and a primary secondary cell, and the activated secondary cell is an activated secondary cell in a secondary cell group to which the secondary cell indicated by the command for activating the secondary cell belongs.

In some possible embodiments, the special cell of the user equipment and the secondary cell indicated by the command for activating the secondary cell are quasi co-sited;

or the special cell of the user equipment and the auxiliary cell indicated by the command for activating the auxiliary cell have the same beam transmitting direction for the user equipment.

In some possible embodiments, the performing, according to the TRS, an activation procedure corresponding to the command for activating the secondary cell includes:

and determining that the auxiliary cell indicated by the command for activating the auxiliary cell is an unknown auxiliary cell, and executing the synchronous processing procedure of the auxiliary cell indicated by the command for activating the auxiliary cell according to the TRS.

and determining that the auxiliary cell indicated by the command for activating the auxiliary cell is an unknown auxiliary cell, detecting the unknown auxiliary cell based on SSB, and reporting a beam level measurement result according to the detection result.

In some possible implementations, the first configuration information is further used to configure the TRS to form a QCL relationship with one beam.

In some possible embodiments, the one beam is the beam corresponding to the optimal beam level measurement result.

In some possible embodiments, the method further comprises:

and receiving second configuration information sent by the network equipment, wherein the second configuration information is used for configuring resources for reporting Channel State Information (CSI), and the resources for reporting the CSI and the TRS form a QCL relationship.

and reporting the CSI to the network equipment.

In a second aspect, a method of activating a secondary cell is provided, performed by a network device, the method comprising:

transmitting first configuration information to user equipment, wherein the first configuration information is used for configuring Tracking Reference Signals (TRSs) which are used for secondary cell activation;

and sending a command for activating a secondary cell and information for activating a transmission configuration indication TCI of the TRS to the user equipment.

In some possible embodiments, the TRS is configured to perform a synchronization process of the secondary cell indicated by the command for activating the secondary cell.

In some possible embodiments, the method further comprises:

a beam level measurement is received.

In some possible embodiments, the method further comprises:

and sending second configuration information to the user equipment, wherein the second configuration information is used for configuring resources for reporting Channel State Information (CSI), and the resources for reporting the CSI and the TRS form a QCL relationship.

In some possible embodiments, the method further comprises:

And receiving the CSI reported by the user equipment.

In a third aspect, an apparatus for activating a secondary cell is provided, configured to a user equipment, the apparatus comprising:

the receiving and transmitting module is configured to receive first configuration information sent by the network equipment, wherein the first configuration information is used for configuring Tracking Reference Signals (TRSs) which are used for activating secondary cells; and is further configured to receive a command for activating a secondary cell and information for activating a transmission configuration indication TCI of the TRS sent by the network device.

In a fourth aspect, there is provided an apparatus for activating a secondary cell, configured to a network device, the apparatus comprising:

a transceiver module configured to send first configuration information to a user equipment, the first configuration information being used for configuring a tracking reference signal TRS, the TRS being used for secondary cell activation; and is further configured to send a command for activating a secondary cell and information for activating a transmission configuration indication TCI of the TRS to the user equipment.

In a fifth aspect, an electronic device is provided that includes a processor and a memory; the memory is used for storing a computer program; the processor is configured to execute the computer program to implement the first aspect or any one of the possible designs of the first aspect.

In a sixth aspect, an electronic device is provided, comprising a processor and a memory; the memory is used for storing a computer program; the processor is configured to execute the computer program to implement the second aspect or any one of the possible designs of the second aspect.

In a seventh aspect, there is provided a computer readable storage medium having stored therein instructions (or computer programs, programs) which when invoked for execution on a computer, cause the computer to perform any one of the possible designs of the first aspect or the first aspect.

In an eighth aspect, there is provided a computer readable storage medium having stored therein instructions (or computer programs, programs) which when invoked for execution on a computer, cause the computer to perform any one of the possible designs of the second aspect or the second aspect described above.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are included to provide a further understanding of embodiments of the disclosure and are incorporated in and constitute a part of this application, illustrate embodiments of the disclosure and together with the description serve to explain the embodiments of the disclosure and not to limit the embodiments of the disclosure unduly. In the drawings:

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the embodiments of the disclosure.

Fig. 1 is a schematic diagram of a wireless communication system architecture according to an embodiment of the present disclosure;

fig. 2 is an interaction diagram illustrating a method of activating a secondary cell in accordance with an example embodiment;

fig. 3 is an interaction diagram illustrating a method of activating a secondary cell in accordance with an example embodiment;

fig. 4 is an interaction diagram illustrating a method of activating a secondary cell in accordance with an example embodiment;

fig. 5 is a schematic diagram illustrating a method of activating a secondary cell according to an example embodiment;

fig. 6 is a flow chart illustrating a method of activating a secondary cell in accordance with an exemplary embodiment;

fig. 7 is a flow chart illustrating a method of activating a secondary cell in accordance with an exemplary embodiment;

fig. 8 is a flow chart illustrating a method of activating a secondary cell in accordance with an exemplary embodiment;

fig. 9 is a flowchart illustrating a method of activating a secondary cell in accordance with an exemplary embodiment;

fig. 10 is a flow chart illustrating a method of activating a secondary cell in accordance with an exemplary embodiment;

Fig. 11 is a flowchart illustrating a method of activating a secondary cell in accordance with an exemplary embodiment;

fig. 12 is a block diagram illustrating an apparatus for activating a secondary cell according to an exemplary embodiment;

fig. 13 is a block diagram illustrating an apparatus for activating a secondary cell according to an exemplary embodiment;

fig. 14 is a block diagram illustrating an apparatus for activating a secondary cell according to an exemplary embodiment;

fig. 15 is a block diagram illustrating an apparatus for activating a secondary cell according to an exemplary embodiment.

Detailed Description

Embodiments of the present disclosure will now be further described with reference to the drawings and detailed description.

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the embodiments of the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.

The terminology used in the embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the disclosure. As used in this disclosure of embodiments and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in embodiments of the present disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of embodiments of the present disclosure. The words "if" and "if" as used herein may be interpreted as "at … …" or "at … …" or "in response to a determination", depending on the context.

Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the like or similar elements throughout. The embodiments described below by referring to the drawings are exemplary and intended for the purpose of explaining the present disclosure and are not to be construed as limiting the present disclosure.

As shown in fig. 1, a method of activating a secondary cell provided by embodiments of the present disclosure may be applied to a wireless communication system 100, which may include, but is not limited to, a network device 101 and a user device 102. User equipment 102 is configured to support carrier aggregation, and user equipment 102 may be connected to multiple carrier elements of network equipment 101, including one primary carrier element and one or more secondary carrier elements.

It should be appreciated that the above wireless communication system 100 is applicable to both low frequency and high frequency scenarios. Application scenarios of the wireless communication system 100 include, but are not limited to, long term evolution (long term evolution, LTE) systems, LTE frequency division duplex (frequency division duplex, FDD) systems, LTE time division duplex (time division duplex, TDD) systems, worldwide interoperability for microwave access (worldwide interoperability for micro wave access, wiMAX) communication systems, cloud radio access network (cloud radio access network, CRAN) systems, future fifth Generation (5 th-Generation, 5G) systems, new Radio (NR) communication systems, or future evolved public land mobile network (public land mobile network, PLMN) systems, and the like.

The user equipment 102 shown above may be a User Equipment (UE), a terminal, an access terminal, a terminal unit, a terminal station, a Mobile Station (MS), a remote station, a remote terminal, a mobile terminal (mobile terminal), a wireless communication device, a terminal proxy, a user equipment, or the like. The user device 102 may be provided with wireless transceiver functionality capable of communicating (e.g., wirelessly communicating) with one or more network devices 101 of one or more communication systems and receiving network services provided by the network devices 101, where the network devices 101 include, but are not limited to, the illustrated base stations.

The user device 102 may be, among other things, a cellular telephone, a cordless telephone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal digital assistant) personal digital assistant, a PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a user device in a future 5G network or a user device in a future evolved PLMN network, etc.

The network device 101 may be an access network device (or access network site). The access network device refers to a device that provides a network access function, such as a radio access network (radio access network, RAN) base station, etc. The network device may specifically include a Base Station (BS) device, or include a base station device, a radio resource management device for controlling the base station device, and the like. The network device may also include a relay station (relay device), an access point, a base station in a future 5G network, a base station in a future evolved PLMN network, or an NR base station, etc. The network device may be a wearable device or an in-vehicle device. The network device may also be a communication chip with a communication module.

For example, network device 101 includes, but is not limited to: a next generation base station (gnodeB, gNB) in 5G, an evolved node B (eNB) in LTE system, a radio network controller (radio network controller, RNC), a Node B (NB) in WCDMA system, a radio controller under CRAN system, a base station controller (basestation controller, BSC), a base transceiver station (base transceiver station, BTS) in GSM system or CDMA system, a home base station (e.g., home evolved nodeB, or home node B, HNB), a baseband unit (BBU), a transmission point (transmitting and receiving point, TRP), a transmission point (transmitting point, TP), a mobile switching center, or the like.

After receiving the command for activating the secondary cell, the user equipment needs to perform Automatic Gain Control (AGC), cell search, L1-RSRP measurement, time-frequency synchronization and CSI reporting when the unknown secondary cell is activated. When activating a known secondary cell, only time-frequency synchronization and CSI reporting need to be performed. The process for activation of the unknown secondary cell and activation of the known secondary cell is different.

After receiving a command for activating a secondary cell sent by a network device, user equipment determines whether the secondary cell indicated by the command is a known secondary cell or an unknown secondary cell.

The method for determining that the auxiliary cell indicated by the command is a known auxiliary cell comprises the following steps:

when the user equipment reports measurement information of the secondary cell to the network (agreed by the protocol) within a set time period before receiving a command for activating the secondary cell, and the secondary cell is detectable within a cell identification time agreed by the protocol, the cell is determined to be a known secondary cell.

In addition, for the secondary cell in FR2, the additional requirement for TCI activation in the secondary cell activation procedure is determined based on SSB or CSI-RS index reported by the user equipment.

And when any condition is not met, determining that the auxiliary cell indicated by the command is an unknown auxiliary cell.

The disclosed embodiments provide a method of activating a secondary cell in which a known secondary cell is activated using a TRS.

Fig. 2 is a flowchart illustrating a method for activating a secondary cell according to an exemplary embodiment, and the method includes steps S201 to S207, as shown in fig. 2, specifically:

in step S201, the network device sends first configuration information to the user device.

The first configuration information is used for configuring tracking reference signals TRSs, and the TRSs are used for secondary cell activation. The network device sends the first configuration information to the user device, i.e. corresponds to sending a TRS.

In some possible embodiments, the TRS is a periodic TRS, a semi-persistent TRS, or an aperiodic TRS.

In some possible embodiments, the first configuration information is further used to configure the TCI of the downlink physical channel to be the same as the TCI of the TRS, so as to ensure normal use of the secondary cell after activation. The same principle as the TCI of SSB is used to activate the secondary cell, where the downlink physical channel needs to be configured.

In some possible implementations, the network device sends a radio resource control (Radio Resource Control, RRC) message including the first configuration information therein.

In step S202, the network device sends the second configuration information to the user device.

The second configuration information is configured to configure a resource for reporting the channel state information CSI, where the resource for reporting the CSI and the TRS form a QCL (Quasi Co-Location) relationship.

In some possible implementations, the network device sends the second configuration information through an RRC message.

In another embodiment, the network device may send the first configuration information and the second configuration information simultaneously through one RRC message.

In step S203, the network device sends a command for activating the secondary cell to the user equipment.

In step S204, the network device transmits information for activating the TCI state of the TRS to the user equipment.

In step S205, the network device transmits information for activating TCI status of physical downlink channels (e.g., PDCCH and PDSCH) to the user equipment.

And after the auxiliary cell indicated by the command is activated by sending the TCI state for activating the physical downlink channel, the physical downlink channel can be normally received.

In step S206, the network device transmits information for activating TCI of CSI-RS to the user equipment.

And transmitting the TCI state of the activated CSI-RS to enable the user equipment to report the CSI according to the CSI-RS.

Step S207, the ue executes an activation procedure corresponding to the secondary cell activation command according to the TRS, where the activation procedure includes: and synchronizing time and frequency and reporting the CSI.

In some possible embodiments, to save transmission time, the network device sends the information in S203, S204, S205, S206 to the user device via the same MAC CE (Medium Access Control-Control Element) message.

In some possible embodiments, the transmission order of S204, S205, S206 is not limited to the above order. After receiving the information of the TCI state for activating the TRS sent by the network device, the ue may activate the secondary cell according to the TRS. The CSI may be reported after receiving information for activating the TCI of the CSI-RS. The physical downlink channel may be received after the secondary cell is activated after receiving the information for activating the TCI state of the physical downlink channel. In the embodiment of the disclosure, the activation of the known auxiliary cell is performed through the TRS, so that the activation effect of the auxiliary cell can be enhanced, and the activation time delay of the auxiliary cell is shortened.

The disclosed embodiments provide a method of activating a secondary cell in which an unknown secondary cell is activated using a TRS.

Fig. 3 is a flowchart illustrating a method for activating a secondary cell according to an exemplary embodiment, and the method includes steps S301 to S308, as shown in fig. 3, specifically:

in step S301, the network device sends first configuration information to the user device.

The first configuration information is used for configuring tracking reference signals TRSs, and the TRSs are used for secondary cell activation.

In some possible implementations, the network device sends the first configuration information through a radio resource control (Radio Resource Control, RRC) message.

In some possible embodiments, the first configuration information is further configured to configure a transmission configuration indicator TCI of the TRS to form a QCL relationship with a synchronization signal block SSB, where the SSB is an SSB of a special cell or an SSB used by an activated secondary cell, where the special cell includes a primary cell and a primary secondary cell, and the activated secondary cell is an activated secondary cell in a secondary cell group to which the secondary cell indicated by the command belongs. With this configuration, the ue can determine the beam direction of the TRS according to the known beam direction of the SSB and the QCL relationship, and does not need to perform a time-consuming beam scanning process, thereby saving time for activating the secondary cell.

In an example, the special cell of the user equipment and the secondary cell indicated by the command are quasi co-sited; or the special cell of the user equipment and the auxiliary cell indicated by the command have the same beam transmitting direction for the user equipment.

In step S302, the network device sends the second configuration information to the user device.

In step S303, the network device sends a command to activate the secondary cell to the user equipment.

In step S304, the network device transmits information for activating the TCI state of the TRS to the user equipment.

Step S305, the ue performs the synchronization process of the secondary cell indicated by the command according to the TRS.

In some possible implementations, the synchronization process of the unknown secondary cell includes automatic gain control (automatic gain control, AGC) adjustment, cell detection, time-frequency synchronization.

In step S306, the network device sends information for activating the TCI state of the physical downlink channel to the user equipment.

In step S307, the network device transmits information for activating the TCI state of the CSI-RS to the user equipment.

It should be noted that, the network device may send the information in S306 and S307 simultaneously through one RRC message.

Step S308, the user equipment executes an activation flow corresponding to the auxiliary cell activation command according to the TRS, wherein the activation flow comprises automatic gain control, cell search, L1-RSRP measurement, time-frequency synchronization and reporting of CSI.

In the embodiment of the disclosure, the activation of the unknown secondary cell is performed through the TRS, so that the activation effect of the secondary cell can be enhanced, and the activation time delay of the secondary cell is shortened.

Embodiments of the present disclosure provide a method of activating a secondary cell in which an unknown secondary cell is activated using SSB and TRS.

Fig. 4 is a flowchart illustrating a method of activating a secondary cell according to an exemplary embodiment, and fig. 5 is a schematic diagram illustrating secondary cell activation according to an exemplary embodiment, and the method includes steps S401 to S412, in combination with fig. 4 and fig. 5:

in step S401, the network device sends a measurement configuration to the user device, where the measurement configuration is a configuration for indicating reporting beam measurement results.

In step S402, the network device sends a command for activating the secondary cell to the user equipment.

In step S403, the user equipment determines that the secondary cell indicated by the command is an unknown secondary cell.

In step S404, the ue detects the secondary cell indicated by the command based on SSB execution, and obtains a measurement result.

Step S405, the user equipment sends the measurement result to the network equipment.

In step S406, the network device determines a beam according to the measurement result.

In some possible embodiments, the network device determines that one beam is the beam corresponding to the optimal measurement result (e.g., the measurement result is a beam level measurement result) according to the measurement result.

In step S407, the network device sends the first configuration information to the user device.

Wherein the first configuration information is configured to activate a TRS of the secondary cell, and configure the TRS to form a QCL relationship with the beam. With this configuration, the ue can determine the beam direction of the TRS according to the beam direction of the beam and the QCL relationship, without performing a time-consuming beam scanning process, thereby saving the time required for activating the secondary cell.

In step S408, the network device sends the second configuration information to the user device.

The second configuration information is used for configuring resources for reporting Channel State Information (CSI), and the resources for reporting the CSI and the TRS form a QCL relationship.

In step S409, the network device transmits information for activating the TCI state of the TRS to the user device.

In step S410, the network device transmits information for activating the TCI state of the physical downlink channel to the user equipment.

In step S411, the network device transmits information for activating the TCI state of the CSI-RS to the user equipment.

It should be noted that, the network device may simultaneously transmit the information in S409, S410, and S411 through one RRC message.

In step S412, the ue executes an activation procedure corresponding to the secondary cell activation command according to the TRS, where the activation procedure includes time-frequency synchronization and reporting CSI.

In the embodiment of the disclosure, the activation of the unknown secondary cell is performed through the SSB and the TRS, so that the activation effect of the secondary cell can be enhanced, and the activation time delay of the secondary cell is shortened.

The embodiment of the disclosure provides a method for activating a secondary cell, which is applied to user equipment, wherein a TRS is used for activating a known secondary cell.

Fig. 6 is a flowchart illustrating a method of activating a secondary cell according to an exemplary embodiment, and the method includes steps S601 to S607 as shown in fig. 6, specifically:

in step S601, first configuration information sent by a network device is received, where the first configuration information is used to configure a tracking reference signal TRS, and the TRS is used for secondary cell activation.

In some possible embodiments, an RRC message sent by the network device is received, where the RRC message includes the first configuration information.

Step S602, receiving second configuration information sent by the network device.

In another embodiment, the ue may receive the first configuration information and the second configuration information simultaneously by receiving one RRC message.

Step S603, a command for activating the secondary cell sent by the network device is received.

In step S604, information for activating the TCI state of the TRS sent by the ue is received.

In step S605, information of TCI status for activating physical downlink channels (for example, PDCCH and PDSCH) transmitted by the user equipment is received.

Step S606, information of TCI for activating CSI-RS sent by the user equipment is received.

In some possible embodiments, the user equipment receives the information in S603, S604, S606 by receiving the same MAC CE (Medium Access Control-Control Element) message.

Step S607, the ue executes an activation procedure corresponding to the secondary cell activation command according to the TRS, where the activation procedure includes: and synchronizing time and frequency and reporting the CSI.

In the embodiment of the disclosure, the activation of the known auxiliary cell is performed through the TRS, so that the activation effect of the auxiliary cell can be enhanced, and the activation time delay of the auxiliary cell is shortened.

The embodiment of the disclosure provides a method for activating a secondary cell, which is applied to user equipment, wherein a TRS is used for activating an unknown secondary cell.

Fig. 7 is a flowchart illustrating a method for activating a secondary cell according to an exemplary embodiment, and the method includes steps S701 to S708 as shown in fig. 7, specifically:

step S701, receiving first configuration information sent by a network device.

In some possible implementations, the first configuration information is received through a radio resource control (Radio Resource Control, RRC) message.

In some possible implementations, for an unknown secondary cell, the first configuration information is further used to configure a transmission configuration indication TCI of the TRS to form a QCL relationship with a synchronization signal block SSB, where the SSB is an SSB of a special cell or an SSB used by an activated secondary cell, where the special cell includes a primary cell and a primary secondary cell, and the activated secondary cell is an activated secondary cell in a secondary cell group to which the secondary cell indicated by the command belongs.

Step S702, receiving second configuration information sent by the network device.

In some possible implementations, the second configuration information is received through an RRC message.

In another embodiment, the ue may receive the first configuration information and the second configuration information simultaneously through one RRC message.

Step S703, receiving a command sent by the network device to activate the secondary cell.

Step S704, information of TCI status for activating TRS sent by the network device is received.

Step S705, executing the synchronization processing procedure of the secondary cell indicated by the command for activating the secondary cell according to the TRS.

In step S706, information for activating the TCI state of the physical downlink channel sent by the network device is received.

In step S707, information for activating the TCI state of the CSI-RS, which is sent by the network device, is received.

It should be noted that the user equipment may receive the information in S706 and S707 simultaneously through one RRC message.

Step S708, executing an activation procedure corresponding to the secondary cell activation command according to the TRS, where the activation procedure includes automatic gain control, cell search, L1-RSRP measurement, time-frequency synchronization, and reporting CSI.

The embodiment of the disclosure provides a method for activating a secondary cell, which is applied to user equipment, wherein SSB and TRS are used for activating the secondary cell.

Fig. 8 is a flowchart illustrating a method of activating a secondary cell according to an exemplary embodiment, and the method includes steps S801 to S811, as shown in fig. 8, specifically:

step S801, a measurement configuration sent by a network device is received, where the measurement configuration is a configuration for indicating reporting a beam measurement result.

Step S802, a command for activating a secondary cell sent by a network device is received.

Step S803, determining the secondary cell indicated by the command as an unknown secondary cell.

Step S804, detecting the secondary cell indicated by the command based on SSB execution, and obtaining a measurement result.

Step S805, sending the measurement result to a network device.

In step S806, the first configuration information sent by the network device is received.

Wherein the first configuration information is configured to activate a TRS of the secondary cell, and configure the TRS to form a QCL relationship with one beam. Wherein, the beam is determined by the network device according to the measurement result. In one example, this beam is the beam corresponding to the optimal measurement (e.g., the measurement is a beam level measurement).

Step S807, the second configuration information sent by the network device is received.

Step S808, receiving information of TCI status for activating TRS sent by the network device.

Step S809 receives information sent by the network device for activating the TCI state of the physical downlink channel.

In step S810, information for activating a TCI state of the CSI-RS, which is sent by the network device, is received.

It should be noted that, the network device may simultaneously receive the information in S409, S410, and S411 through one RRC message.

Step S811, executing, according to the TRS, an activation procedure corresponding to the secondary cell activation command, where the activation procedure includes time-frequency synchronization and reporting CSI.

The embodiment of the disclosure provides a method for activating a secondary cell, which is applied to network equipment, wherein a TRS is used for activating a known secondary cell.

Fig. 9 is a flowchart illustrating a method for activating a secondary cell according to an exemplary embodiment, and the method includes steps S901 to S907 as shown in fig. 9, specifically:

step S901, sending first configuration information to a user equipment.

In some possible implementations, for the known secondary cell, the first configuration information is further used to configure the TCI of the downlink physical channel to be the same as the TCI of the TRS.

Step S902, sending second configuration information to the user equipment.

Step S903, a command for activating the secondary cell is sent to the user equipment.

Step S904, information for activating the TCI state of the TRS is transmitted to the user equipment.

In step S905, information for activating TCI status of physical downlink channels (e.g., PDCCH and PDSCH) is transmitted to the user equipment.

Step S906, information for activating TCI of CSI-RS is transmitted to the user equipment.

In some possible embodiments, the network device sends the information in S903, S904, S905, S906 to the user device through the same MAC CE (Medium Access Control-Control Element) message.

Step S907, receiving CSI reported by the ue.

The embodiment of the disclosure provides a method for activating a secondary cell, which is applied to network equipment, wherein a TRS is used for activating an unknown secondary cell.

Fig. 10 is a flowchart illustrating a method of activating a secondary cell according to an exemplary embodiment, and the method includes steps S1001 to S1007, as shown in fig. 10, specifically:

step S1001, sending first configuration information to the user equipment.

In some possible implementations, for an unknown secondary cell, the first configuration information is further used to configure a transmission configuration indicator TCI of the TRS to form a QCL relationship with a synchronization signal block SSB, where the SSB is an SSB of a special cell or an SSB used by other active cells supported by the user equipment, and the special cell includes a primary cell and a primary secondary cell.

Step S1002, send second configuration information to the user equipment.

Step S1003, a command for activating the secondary cell is sent to the user equipment.

Step S1004, information for activating the TCI state of the TRS is transmitted to the user equipment.

Step S1005, information for activating the TCI state of the physical downlink channel is sent to the user equipment.

Step S1006, information for activating TCI state of CSI-RS is sent to user equipment.

It should be noted that the network device may simultaneously transmit the information in S1003 to S1007 through one RRC message.

Step S1007, receiving CSI reported by the ue.

The embodiment of the disclosure provides a method for activating a secondary cell, which is applied to network equipment, wherein an unknown secondary cell is activated by using SSB and TRS.

Fig. 11 is a flowchart illustrating a method for activating a secondary cell according to an exemplary embodiment, and the method includes steps S1101 to S1110, as shown in fig. 11, specifically:

step S1101, transmitting a measurement configuration to the user equipment, where the measurement configuration is a configuration for indicating reporting beam measurement results.

Step S1102, a command for activating the secondary cell is sent to the user equipment.

Step S1103 receives a measurement result sent by the ue and based on the SSB to detect the indicated secondary cell.

Step S1104, determining a beam according to the measurement result.

Step S1105, sending the first configuration information to the user equipment.

Wherein the first configuration information is configured to activate a TRS of the secondary cell, and configure the TRS to form a QCL relationship with the beam.

Step S1106, the second configuration information is sent to the user equipment.

Step S1107, information for activating the TCI state of the TRS is transmitted to the user equipment.

Step S1108, information for activating the TCI state of the physical downlink channel is sent to the user equipment.

Step S1109, information for activating the TCI state of the CSI-RS is transmitted to the user equipment.

It should be noted that the network device may simultaneously transmit the information in S1107 to S1109 through one RRC message.

Step S1110, receiving CSI reported by a user equipment.

Based on the same concept as the above method embodiments, the present disclosure also provides a communication apparatus, which may have the functions of the user equipment 102 in the above method embodiments, and is configured to perform the steps performed by the user equipment 102 provided in the above embodiments. The functions may be implemented by hardware, or may be implemented by software or hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the functions described above.

In one possible implementation, the communication apparatus 1200 shown in fig. 12 may be used as the user equipment 102 according to the above-described method embodiment, and perform the steps performed by the user equipment 102 in the above-described method embodiment.

The communication device 1200 includes a transceiver module 1201 and a processing module 1202.

A transceiver module 1201 configured to receive first configuration information sent by a network device, where the first configuration information is used to configure a tracking reference signal TRS, and the TRS is used for secondary cell activation; is further configured to receive a command for activating a secondary cell and a transmission configuration indication TCI for activating the TRS sent by a network device.

The processing module 1202 is configured to execute an activation procedure corresponding to the command for activating the secondary cell according to the TRS.

In some possible embodiments, the special cell of the user equipment and the secondary cell indicated by the command for activating the secondary cell are quasi co-sited; or the special cell of the user equipment and the auxiliary cell indicated by the command for activating the auxiliary cell have the same beam transmitting direction for the user equipment.

In some possible implementations, the processing module 1202 is further configured to determine that the secondary cell indicated by the command for activating the secondary cell is an unknown secondary cell, and perform a synchronization process of the secondary cell indicated by the command for activating the secondary cell according to the TRS.

In some possible embodiments, the processing module 1202 is further configured to determine that the secondary cell indicated by the command for activating the secondary cell is an unknown secondary cell, perform detection of the unknown secondary cell based on SSB, and report a beam level measurement result according to the detection result.

In some possible embodiments, the transceiver module 1201 is further configured to receive second configuration information sent by the network device, where the second configuration information is used to configure resources for reporting CSI, and the resources for reporting CSI and the TRS form a QCL relationship.

In some possible implementations, the transceiver module 1201 is further configured to report CSI to the network device.

When the communication device is a user equipment 102, its structure may also be as shown in fig. 13.

Referring to fig. 13, apparatus 1300 may include one or more of the following components: a processing component 1302, a memory 1304, a power component 1306, a multimedia component 1308, an audio component 1310, an input/output (I/O) interface 1312, a sensor component 1314, and a communication component 1316.

The processing component 1302 generally controls overall operation of the apparatus 1300, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 1302 may include one or more processors 1320 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 1302 can include one or more modules that facilitate interactions between the processing component 1302 and other components. For example, the processing component 1302 may include a multimedia module to facilitate interaction between the multimedia component 1308 and the processing component 1302.

The memory 1304 is configured to store various types of data to support operations at the device 1300. Examples of such data include instructions for any application or method operating on the apparatus 1300, contact data, phonebook data, messages, pictures, videos, and the like. The memory 1304 may be implemented by any type or combination of volatile or nonvolatile memory devices 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, magnetic or optical disk.

The power component 1306 provides power to the various components of the device 1300. The power components 1306 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 1300.

The multimedia component 1308 includes a screen between the device 1300 and the user that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If 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 includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or slide action, but also the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 1308 includes a front-facing camera and/or a rear-facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 1300 is in an operational mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 1310 is configured to output and/or input audio signals. For example, the audio component 1310 includes a Microphone (MIC) configured to receive external audio signals when the apparatus 1300 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 1304 or transmitted via the communication component 1316. In some embodiments, the audio component 1310 also includes a speaker for outputting audio signals.

The I/O interface 1312 provides an interface between the processing component 1302 and peripheral interface modules, which may be a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.

The sensor assembly 1314 includes one or more sensors for providing status assessment of various aspects of the apparatus 1300. For example, the sensor assembly 1314 may detect the on/off state of the device 1300, the relative positioning of the components, such as the display and keypad of the apparatus 1300, the sensor assembly 1314 may also detect a change in position of the apparatus 1300 or one of the components of the apparatus 1300, the presence or absence of user contact with the apparatus 1300, the orientation or acceleration/deceleration of the apparatus 1300, and a change in temperature of the apparatus 1300. The sensor assembly 1314 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. The sensor assembly 1314 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 1314 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 1316 is configured to facilitate communication between the apparatus 1300 and other devices, either wired or wireless. The apparatus 1300 may access a wireless network based on a communication standard, such as WiFi,4G or 5G, or a combination thereof. In one exemplary embodiment, the communication component 1316 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1316 further includes a Near Field Communication (NFC) module to facilitate short range communications. 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.

In an exemplary embodiment, the apparatus 1300 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for executing the methods described above.

In an exemplary embodiment, a non-transitory computer-readable storage medium is also provided, such as memory 1304, including instructions executable by processor 1320 of apparatus 1300 to perform the above-described method. For example, the non-transitory computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

Based on the same concept as the above method embodiments, the present disclosure also provides a communication apparatus that may have the function of the network device 101 in the above method embodiments and is used to perform the steps performed by the network device 101 provided in the above embodiments. The functions may be implemented by hardware, or may be implemented by software or hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the functions described above.

In one possible implementation, the communication apparatus 1400 shown in fig. 14 may be used as the network device 101 according to the above method embodiment, and perform the steps performed by the network device 101 in the above method embodiment.

The communication device 1400 includes a transceiver module 1401.

The transceiver module 1401 is configured to send first configuration information to the user equipment, the first configuration information being used for configuring tracking reference signals TRSs, the TRSs being used for secondary cell activation; is further configured to send a command for activating a secondary cell and information for activating a transmission configuration indication, TCI, of the TRS to the user equipment.

In some possible embodiments, the special cell of the user equipment and the secondary cell indicated by the command are quasi co-sited; or the special cell of the user equipment and the auxiliary cell indicated by the command have the same beam transmitting direction for the user equipment.

In some possible implementations, the transceiver module 1401 is further configured to send an activate secondary cell command to the user equipment, receiving a beam level measurement.

In some possible embodiments, the transceiver module 1401 is further configured to send second configuration information to the ue, where the second configuration information is used to configure resources for CSI reporting, and the resources for CSI reporting and the TRS form a QCL relationship.

In some possible embodiments, the transceiver module 1401 is further configured to receive CSI reported by the user equipment.

When the communication apparatus is a network device, its structure may also be as shown in fig. 15. The configuration of the communication apparatus is described with the network device 101 as a base station. As shown in fig. 15, the apparatus 1500 includes a memory 1501, a processor 1502, a transceiver component 1503, and a power supply component 1506. The memory 1501 is coupled to the processor 1502 and can be used to store programs and data necessary for the communication device 1500 to perform various functions. The processor 1502 is configured to support the communication device 1500 to perform the corresponding functions of the methods described above, which can be implemented by invoking a program stored in the memory 1501. The transceiving component 1503 may be a wireless transceiver operable to support the communication device 1500 in receiving signaling and/or data over a wireless air interface and transmitting signaling and/or data. The transceiver component 1503 may also be referred to as a transceiver unit or a communication unit, and the transceiver component 1503 may include a radio frequency component 1504, which may be a remote radio frequency unit (remote radio unit, RRU), and one or more antennas 1505, where the radio frequency component 1504 may be specifically used for transmitting radio frequency signals and converting radio frequency signals to baseband signals, and the one or more antennas 1505 may be specifically used for radiating and receiving radio frequency signals.

When the communication device 1500 needs to transmit data, the processor 1502 may perform baseband processing on the data to be transmitted and then output a baseband signal to the rf unit, where the rf unit performs rf processing on the baseband signal and then transmits the rf signal in the form of electromagnetic wave through the antenna. When data is transmitted to the communication device 1500, the radio frequency unit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 1502, and the processor 1502 converts the baseband signal into data and processes the data.

Other implementations of the disclosed embodiments will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosed embodiments following, in general, the principles of the disclosed embodiments and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosed embodiments being indicated by the following claims.

It is to be understood that the disclosed embodiments are not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the embodiments of the present disclosure is limited only by the appended claims.

Industrial applicability

The activation of the auxiliary cell is carried out through the TRS, so that the activation effect of the auxiliary cell can be enhanced, and the activation time delay of the auxiliary cell is shortened.

Claims

A method of activating a secondary cell, performed by a user equipment, the method comprising:

receiving first configuration information sent by network equipment, wherein the first configuration information is used for configuring Tracking Reference Signals (TRSs) which are used for activating secondary cells;

receiving a command for activating a secondary cell and information for activating a Transmission Configuration Indication (TCI) of the TRS, which are sent by a network device;

and executing an activation flow corresponding to the command for activating the secondary cell according to the TRS.
The method of claim 1, wherein the first configuration information is further used to configure a TCI of a downlink physical channel to be the same as a TCI of the TRS.
The method according to claim 1 or 2, wherein the first configuration information is further used to configure TCI of the TRS to form a QCL relationship with a synchronization signal block SSB, the SSB being an SSB of a special cell or an SSB used by an activated secondary cell, the special cell including a primary cell and a primary secondary cell, the activated secondary cell being an activated secondary cell in a secondary cell group to which the secondary cell indicated by the command for activating a secondary cell belongs.
The method of claim 3, wherein,

the special cell of the user equipment and the auxiliary cell indicated by the command for activating the auxiliary cell are quasi co-sited;

or the special cell of the user equipment and the auxiliary cell indicated by the command for activating the auxiliary cell have the same beam transmitting direction for the user equipment.
The method of claim 3, wherein the performing an activation procedure corresponding to the command to activate the secondary cell according to the TRS comprises:

and determining that the auxiliary cell indicated by the command for activating the auxiliary cell is an unknown auxiliary cell, and executing the synchronous processing procedure of the auxiliary cell indicated by the command for activating the auxiliary cell according to the TRS.
The method of claim 1 or 2, wherein the performing an activation procedure corresponding to the command for activating the secondary cell according to the TRS comprises:

and determining that the auxiliary cell indicated by the command for activating the auxiliary cell is an unknown auxiliary cell, detecting the unknown auxiliary cell based on SSB, and reporting a beam level measurement result according to the detection result.
The method of claim 6, wherein the first configuration information is further used to configure the TRS to form a QCL relationship with one beam.
The method of claim 7, wherein the one beam is a beam corresponding to an optimal beam level measurement.
The method of any one of claims 1 to 8, wherein the method further comprises:

and receiving second configuration information sent by the network equipment, wherein the second configuration information is used for configuring resources for reporting Channel State Information (CSI), and the resources for reporting the CSI and the TRS form a QCL relationship.
The method of claim 9, wherein the performing an activation procedure corresponding to the secondary cell activation command according to the TRS comprises:

and reporting the CSI to the network equipment.
A method of activating a secondary cell, performed by a network device, the method comprising:

transmitting first configuration information to user equipment, wherein the first configuration information is used for configuring Tracking Reference Signals (TRSs) which are used for secondary cell activation;

and sending a command for activating a secondary cell and information for activating a transmission configuration indication TCI of the TRS to the user equipment.
The method of claim 11, wherein the first configuration information is further used to configure a TCI of a downlink physical channel to be the same as a TCI of the TRS.
The method of claim 11 or 12, wherein the first configuration information is further used to configure TCI of the TRS to form a QCL relationship with a synchronization signal block SSB, the SSB being an SSB of a special cell or an SSB used by an activated secondary cell, the special cell including a primary cell and a primary secondary cell, the activated secondary cell being an activated secondary cell in a secondary cell group to which the secondary cell indicated by the command for activating a secondary cell belongs.
The method of claim 13, wherein,

the special cell of the user equipment and the auxiliary cell indicated by the command for activating the auxiliary cell are quasi co-sited;

or the special cell of the user equipment and the auxiliary cell indicated by the command for activating the auxiliary cell have the same beam transmitting direction for the user equipment.
The method of claim 13, wherein the TRS is configured to perform a synchronization process for the secondary cell indicated by the command to activate the secondary cell.
The method of claim 11 or 12, wherein the method further comprises:

and sending an activate secondary cell command to the user equipment, and receiving a beam level measurement result.
The method of claim 16, wherein the first configuration information is further used to configure the TRS to form a QCL relationship with one beam.
The method of claim 17, wherein the one beam is a beam corresponding to an optimal beam level measurement.
The method of any one of claims 11 to 18, wherein the method further comprises:

and sending second configuration information to the user equipment, wherein the second configuration information is used for configuring resources for reporting Channel State Information (CSI), and the resources for reporting the CSI and the TRS form a QCL relationship.
The method of claim 19, wherein the method further comprises:

and receiving the CSI reported by the user equipment.
An apparatus for activating a secondary cell configured for a user equipment, the apparatus comprising:

the receiving and transmitting module is configured to receive first configuration information sent by the network equipment, wherein the first configuration information is used for configuring Tracking Reference Signals (TRSs) which are used for activating secondary cells; and is further configured to receive a command for activating a secondary cell and information for activating a transmission configuration indication TCI of the TRS sent by the network device.
An apparatus for activating a secondary cell configured to a network device, the apparatus comprising:

a transceiver module configured to send first configuration information to a user equipment, the first configuration information being used for configuring a tracking reference signal TRS, the TRS being used for secondary cell activation; and is further configured to send a command for activating a secondary cell and information for activating a transmission configuration indication TCI of the TRS to the user equipment.
An electronic device comprising a processor and a memory, wherein,

the memory is used for storing a computer program;

the processor is configured to execute the computer program to implement the method of any one of claims 1-10.
An electronic device comprising a processor and a memory, wherein,

the memory is used for storing a computer program;

the processor is configured to execute the computer program to implement the method of any one of claims 11-20.
A computer readable storage medium having instructions stored therein which, when invoked for execution on a computer, cause the computer to perform the method of any of claims 1-10.
A computer readable storage medium having instructions stored therein which, when invoked for execution on a computer, cause the computer to perform the method of any of claims 11-20.