CN113115410B

CN113115410B - Timing adjustment method, device and terminal for secondary cell activation process

Info

Publication number: CN113115410B
Application number: CN202110496143.6A
Authority: CN
Inventors: 薛丰廷
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2019-05-10
Filing date: 2019-05-10
Publication date: 2022-11-25
Anticipated expiration: 2039-05-10
Also published as: CN113115410A; CN110312294B; CN110312294A

Abstract

The disclosure relates to a timing adjustment method, a timing adjustment device and a timing adjustment terminal for an activation process of a secondary cell, wherein the method comprises the following steps: searching a synchronization signal of the target secondary cell in response to an instruction for adding the target secondary cell sent by the base station; responding to a secondary cell activation instruction sent by a base station, and performing activation processing on the target secondary cell; detecting whether each downlink subframe has downlink scheduling or not within a preset time after the activation processing starts; and if it is detected that a certain downlink subframe has no downlink scheduling in the preset time, canceling downlink services of a downlink subframe behind the downlink subframe, and after the synchronous signal is searched, adjusting timing in the downlink subframe according to the synchronous signal. By using the embodiment of the disclosure, data abnormity caused by the conflict between the timing adjustment and the downlink service can be avoided.

Description

Timing adjustment method, device and terminal for secondary cell activation process

The scheme is a divisional application of an invention patent application with the application date of 2019, 5 and 10, and the application number of 201910389939.4, and the name of the invention is 'auxiliary cell activation process timing adjustment method, device and terminal'.

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a method, an apparatus, and a terminal for timing adjustment in an activation process of a secondary cell.

Background

Carrier Aggregation (CA) technology is a key technology of LTE (Long Term Evolution) system. The carrier aggregation means that carriers used in a communication process are not limited to one, but communication is simultaneously performed on one main carrier and a plurality of auxiliary carriers. The terminal with the carrier aggregation function can simultaneously maintain connection with a primary cell (PCC cell) and a plurality of secondary cells (SCC cells) under an access network device. And when the auxiliary cell is to be applied for downlink reception, the corresponding auxiliary cell needs to be added and activated, and after activation, the auxiliary cell can be used for downlink reception. Since the secondary cell is usually an asynchronous cell, the difference between the air interface timing and the primary cell is large, and if downlink service is performed in the secondary cell, the terminal is required to correspondingly adjust the downlink timing.

In the prior art, the downlink timing is usually adjusted by searching for a synchronization signal of a secondary cell, and immediately adjusting downlink timing (timing) according to the synchronization signal after the synchronization signal is searched. The searching time may be longer than the time for activating the secondary cell, which may cause the cell to already start downlink data receiving service when the synchronization signal is searched, and if the downlink timing is adjusted immediately at this time, collision may occur with the downlink service, resulting in data abnormality.

Disclosure of Invention

The disclosure provides a timing adjustment method, a timing adjustment device and a terminal in a secondary cell activation process, so as to avoid data exception caused by conflict between timing adjustment and downlink service.

According to a first aspect of the embodiments of the present disclosure, a method for timing adjustment of a secondary cell activation process is provided, which is applied to a terminal, and the method includes:

searching a synchronization signal of the target secondary cell in response to an instruction of adding the target secondary cell sent by the base station;

responding to a secondary cell activation instruction sent by a base station, and performing activation processing on the target secondary cell;

and after the synchronous signal is searched, adjusting the timing of an uplink subframe according to the synchronous signal.

In one possible implementation manner, in response to a secondary cell activation instruction sent by a base station, performing activation processing on the target secondary cell includes:

receiving a data packet for activating a secondary cell from a base station through a physical layer;

analyzing the data packet through a media access control layer to obtain the auxiliary cell activation instruction;

and responding to the secondary cell activation instruction, and performing activation processing on the target secondary cell through a physical layer.

In one possible implementation manner, in response to an instruction from the base station to add the target secondary cell, searching for the synchronization signal of the target secondary cell includes:

responding to an instruction of adding a target auxiliary cell sent by a base station, adding the target auxiliary cell through a wireless resource control layer and sending a connection updating mode message to the physical layer;

in response to the connection update mode message, the physical layer searches for a synchronization signal of the target secondary cell.

According to a second aspect of the embodiments of the present disclosure, there is provided a timing adjustment method for a secondary cell activation process, which is applied to a terminal, the method including:

searching a synchronization signal of the target secondary cell in response to an instruction for adding the target secondary cell sent by the base station;

detecting whether each downlink subframe has downlink scheduling or not within a preset time after the activation processing starts;

if it is detected that a certain downlink subframe has no downlink scheduling in the preset time, cancelling downlink service of a downlink subframe behind the downlink subframe, and after the synchronous signal is searched, adjusting timing in the downlink subframe according to the synchronous signal.

In one possible implementation, the method further includes:

if each downlink subframe has downlink scheduling in the preset time, cancelling downlink service of one downlink subframe after the preset time, and adjusting timing in the downlink subframe according to the synchronous signal.

In a possible implementation manner, the manner of detecting whether the downlink subframe has downlink scheduling includes:

and detecting whether the downlink subframe has downlink scheduling or not according to the downlink control information of the downlink subframe.

In one possible implementation, the method further includes:

and after the adjustment timing is finished, recovering the downlink service of the subsequent downlink subframe.

According to a third aspect of the embodiments of the present disclosure, there is provided a timing adjustment apparatus for a secondary cell activation process, which is applied to a terminal, the apparatus including:

the auxiliary cell searching and adding module is configured to respond to an instruction of adding the target auxiliary cell sent by the base station and search a synchronization signal of the target auxiliary cell;

the activation processing module is configured to respond to a secondary cell activation instruction sent by a base station and perform activation processing on the target secondary cell;

and the timing adjusting module is configured to adjust the timing of the uplink subframe according to the synchronous signal after the synchronous signal is searched.

In one possible implementation, the activation processing module includes:

a receiving module configured to receive a data packet for activating a secondary cell from a base station through a physical layer;

the analysis module is configured to analyze the data packet through a media access control layer to obtain the auxiliary cell activation instruction;

and the activation module responds to the auxiliary cell activation instruction and performs activation processing on the target auxiliary cell through a physical layer.

In a possible implementation manner, the secondary cell search adding module includes:

the auxiliary cell adding module is configured to respond to a command of adding a target auxiliary cell sent by the base station, add the target auxiliary cell through a wireless resource control layer and send a connection updating mode message to a physical layer;

a synchronization signal search module configured to search for a synchronization signal of the target secondary cell by the physical layer in response to the connection update mode message.

the activation processing module is configured to respond to a secondary cell activation instruction sent by the base station and perform activation processing on the target secondary cell;

a downlink scheduling detection module configured to detect whether each downlink subframe has downlink scheduling within a preset time after the start of the activation processing;

and the timing adjusting module is configured to cancel the downlink service of a downlink subframe behind a certain downlink subframe if the certain downlink subframe is detected to have no downlink scheduling in the preset time, and adjust the timing in the downlink subframe according to the searched synchronous signal.

In a possible implementation manner, the timing adjustment module is further configured to cancel downlink traffic of one or more downlink subframes after the preset time if each downlink subframe has downlink scheduling in the preset time, and adjust timing in the one or more downlink subframes according to the synchronization signal.

In a possible implementation manner, the manner of detecting whether each downlink subframe has downlink scheduling includes:

In one possible implementation, the apparatus further includes:

and the downlink service control module is configured to recover the downlink service of the subsequent downlink subframe after the timing adjustment is completed.

In one possible implementation, the activation processing module includes:

In one possible implementation manner, the secondary cell search adding module includes:

According to a fifth aspect of the embodiments of the present disclosure, there is provided a terminal, including:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to carry out the method of the first aspect of the embodiments of the present disclosure when executing the instructions.

According to a sixth aspect of an embodiment of the present disclosure, there is provided a terminal including:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to carry out the method of the second aspect of the embodiments of the present disclosure when executing the instructions.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

for a TDD cell, by using the method described in the first aspect of the embodiments of the present disclosure, after an auxiliary cell is activated, as long as a synchronization signal of a target auxiliary cell is searched, uplink and downlink allocation of the TDD cell may be used, and downlink timing is adjusted by using an uplink subframe, so that a conflict between timing adjustment and downlink service is not generated.

For the FDD cell, using the method described in the second aspect of the embodiment of the present disclosure, after the target secondary cell activation processing starts, the downlink scheduling of the downlink subframe of the target secondary cell is detected without adjusting the timing urgently. And after the downlink service is selected to be terminated and the synchronous signal is determined to be found, the timing is adjusted by using the downlink subframe without the downlink service. The method avoids the conflict between downlink timing adjustment and downlink services while reducing the influence on the downlink services, and further can avoid data abnormity.

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 incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a flowchart illustrating a method for adjusting timing of a secondary cell activation procedure according to an embodiment of the present disclosure.

Fig. 2 is a flow diagram of adding a secondary cell and activating a secondary cell provided in one example of the present disclosure.

Fig. 3 is a flowchart illustrating an embodiment of searching for a synchronization signal of a target secondary cell according to the present disclosure.

Fig. 4 is a flowchart illustrating an embodiment of activating a target secondary cell provided by the present disclosure.

Fig. 5 is a flowchart illustrating a timing adjustment method for a secondary cell activation procedure according to another embodiment of the present disclosure.

Fig. 6 is a flowchart illustrating an embodiment of searching for a synchronization signal of a target secondary cell according to the present disclosure.

Fig. 7 is a flowchart illustrating an embodiment of activating a target secondary cell provided by the present disclosure.

Fig. 8 is a schematic block structure diagram of an embodiment of an apparatus for adjusting timing of a secondary cell activation procedure according to the present disclosure.

Fig. 9 is a schematic block structure diagram of another apparatus for adjusting timing of a secondary cell activation procedure according to another embodiment of the present disclosure.

Fig. 10 is a block diagram illustrating one possible design of a terminal according to one embodiment of the present disclosure.

Fig. 11 is a block diagram illustrating one possible design of a terminal according to another embodiment of the present disclosure.

Detailed Description

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

The implementation provided in the embodiments of the present disclosure may be applied to multiple communication systems, for example, an LTE (long term evolution, LTE for short) system, or a communication system that adopts a 5G communication technology, and the present disclosure is not limited thereto.

The terminal involved in the embodiments of the present disclosure may include a handheld device, a vehicle-mounted device, a wearable device, a computing device or other processing device connected to a wireless modem with a carrier aggregation function, and various forms of user equipment, a Mobile Station (MS), a terminal (terminal), a terminal equipment (terminal equipment), and so on.

The base station related to the embodiment of the present disclosure may be an evolved Node B (NodeB or eNB or e-NodeB, evolved Node B) in an LTE system, or a base station device gNB in a 5G (5 th Generation, fifth Generation mobile communication system, abbreviated as 5G) system, or a base station device etltenb in an LTE system. The embodiment of the present disclosure does not particularly limit the type of the base station.

The embodiment of the present disclosure defines a unidirectional communication channel from a terminal to a base station as an uplink channel, and a unidirectional communication channel from the base station to the terminal as a downlink channel.

"plurality" appearing in embodiments of the present disclosure means two or more. The descriptions of the first, second, etc. appearing in the embodiments of the present disclosure are only for illustrating and differentiating the objects, and do not represent the order or the particular limitation of the number of the devices in the embodiments of the present disclosure, and do not constitute any limitation to the embodiments of the present disclosure.

Fig. 1 is a flowchart illustrating a method for adjusting timing of a secondary cell activation procedure according to an embodiment of the present disclosure. As shown in fig. 1, the method may be applied to a terminal having a carrier aggregation function, and the method may include:

s110: and searching the synchronization signal of the target secondary cell in response to the instruction of adding the target secondary cell sent by the base station.

The target secondary cell is a cell determined to be added by the base station, and the target secondary cell is determined by the base station, and the specific determination mode is not limited in the present disclosure.

In this example, the target secondary cell may be a TDD cell (time division duplex cell), which includes both uplink subframes and downlink subframes, and also has a determined time allocation of the uplink subframes and the downlink subframes.

Fig. 2 is a flow diagram of adding a secondary cell and activating a secondary cell provided in one example of the present disclosure. A detailed procedure for adding a secondary cell and a detailed procedure for activating a secondary cell are shown in fig. 2.

Fig. 3 is a flowchart illustrating an embodiment of searching for a synchronization signal of a target secondary cell according to the present disclosure. Specifically, as shown in fig. 3, in response to the instruction to add the target secondary cell sent by the base station, searching for the synchronization signal of the target secondary cell may include:

s111: in response to an instruction for adding a target secondary cell sent by a base station, adding the target secondary cell through a radio resource control layer and sending a connection update mode message (connect update mode message) to a physical layer.

Fig. 2 shows a detailed procedure of adding a secondary cell in an example of the present disclosure, and as shown in fig. 2, the Radio Resource Control Layer may be represented as a Radio Resource Control (RRC) Layer, and specifically represents a Physical Layer (Physical Layer) with an LTE baseband. As shown in fig. 2, the RRC layer receives an instruction for adding a secondary cell (SCC cell) from the base station, adds a target secondary cell by using the RRC layer, and sends an RRC connection update message to the LTE baseband.

S112: in response to the connection update mode message, the physical layer searches for a synchronization signal of the target secondary cell.

Specifically, as shown in fig. 2, in an example of the present disclosure, after receiving the connection update mode message, the physical layer (LTE baseband) may determine a target secondary cell to be added. Upon determining that a target secondary cell may begin searching for synchronization signals (PSS/SSS signals) of the target secondary cell.

S120: and responding to a secondary cell activation instruction sent by the base station, and performing activation processing on the target secondary cell.

Fig. 4 is a flowchart illustrating an embodiment of activating a target secondary cell provided by the present disclosure. Specifically, as shown in fig. 4, in response to the secondary cell activation instruction sent by the base station, the performing activation processing on the target secondary cell may include:

s121: and receiving a data packet for activating the secondary cell from the base station through the physical layer.

As shown in fig. 2, in an example of the present disclosure, a base station in the physical layer issues an active SCC downlink packet activating a secondary cell to a physical layer (LTE baseband), and the physical layer (LTE baseband) receives the data packet and performs PDSCH (physical downlink channel) processing on the data packet, and reports the processed data packet to an MAC layer (Medium Access Control, MAC for short).

S122: and analyzing the data packet through a media access control layer to obtain the auxiliary cell activation instruction.

As shown in fig. 2, in an example of the present disclosure, the MAC layer parses the data packet to obtain a secondary cell activation notification and sends the secondary cell activation notification to a physical layer (LTE baseband).

S123: and responding to the secondary cell activation instruction, and performing activation processing on the target secondary cell through a physical layer.

As shown in fig. 2, in an example of the present disclosure, after receiving a secondary cell activation notification, a physical layer (LTE baseband) activates the target secondary cell, that is, performs a Downlink data (Downlink data) receiving service by using the target secondary cell.

S130: and after the synchronous signal is searched, adjusting the timing of an uplink subframe according to the synchronous signal.

The synchronization signal is a time reference signal provided to a terminal, and may include a primary synchronization signal PSS and a secondary synchronization signal SSS, and the terminal may detect the synchronization signal through a physical layer. In the related art, a synchronization signal may be used to perform timing adjustment on an uplink subframe or a downlink subframe to achieve uplink synchronization or downlink synchronization.

The time of the activation processing is usually less than the time of searching the synchronization signal, so when the synchronization signal is searched, the terminal has performed downlink data receiving service in the downlink subframe of the target secondary cell.

For the TDD secondary cell with uplink and downlink allocation, in this example, after the synchronization signal is searched, the timing is adjusted in the uplink subframe, and since the TDD cell has the determined time allocation of the uplink subframe and the downlink subframe, the timing is adjusted only in the uplink subframe, and the downlink timing is correspondingly adjusted. In addition, because the downlink data receiving service is only carried out in the downlink subframe, the adjustment timing of the uplink subframe does not conflict with the downlink service, and thus, the data abnormity caused by the conflict between the adjustment timing and the downlink service can be avoided.

As shown in fig. 2, in an example of the present disclosure, timing is adjusted by a physical layer (LTE baseband) according to the searched PSS signal and SSS signal.

Fig. 5 is a flowchart illustrating another embodiment of a timing adjustment method for a secondary cell activation procedure according to the present disclosure. As shown in fig. 5, the method may be applied to a terminal having a carrier aggregation function. The method described in this example may be applied to a frequency division duplex secondary cell (FDD secondary cell). The FDD secondary cell only has downlink subframes, and the timing can be adjusted only in the downlink subframes. Of course, in other embodiments of the present application, the method may also be used in a TDD secondary cell, and the timing is adjusted in a downlink subframe of the TDD secondary cell.

The method may include:

s210: and searching the synchronization signal of the target secondary cell in response to the instruction of adding the target secondary cell sent by the base station.

Fig. 6 is a flowchart illustrating an embodiment of searching for a synchronization signal of a target secondary cell according to the present disclosure. Specifically, as shown in fig. 6, in response to the instruction from the base station to add the target secondary cell, searching for the synchronization signal of the target secondary cell may include:

s211: in response to an instruction for adding a target secondary cell sent by a base station, adding the target secondary cell through a radio resource control layer and sending a connection update mode message (connect update mode message) to a physical layer.

S212: in response to the connection update mode message, the physical layer searches for a synchronization signal of the target secondary cell.

S220: and responding to a secondary cell activation instruction sent by the base station, and performing activation processing on the target secondary cell.

Fig. 7 is a flowchart illustrating an embodiment of activating a target secondary cell provided by the present disclosure. Specifically, as shown in fig. 7, in response to the secondary cell activation instruction sent by the base station, the performing activation processing on the target secondary cell may include:

s221: and receiving a data packet for activating the secondary cell from the base station through the physical layer.

As shown in fig. 2, in an example of the present disclosure, a base station issues a data packet active SCC downlink activating a secondary cell to a physical layer (LTE baseband), and the physical layer (LTE baseband) receives the data packet and performs PDSCH (physical downlink channel) processing on the data packet, and reports the processed data packet to an MAC layer (Medium Access Control, MAC for short).

S222: and analyzing the data packet through a media access control layer to obtain the auxiliary cell activation instruction.

S223: and responding to the secondary cell activation instruction, and performing activation processing on the target secondary cell through a physical layer.

S230: and detecting whether each downlink subframe has downlink scheduling or not within a preset time after the activation processing starts.

The preset time is counted from the start of the activation process, and may be determined according to a signal search capability of the terminal, and specifically, a maximum time for the terminal to search for the synchronization signal of the secondary cell may be used as the preset time. For example, in an embodiment of the present application, since the maximum time for the terminal to search for the synchronization signal of the secondary cell is 20 milliseconds, the preset time is set to 20 milliseconds. That is, within 20 milliseconds after the activation process starts, it can be ensured that the terminal can search for the synchronization signal of the target secondary cell. Of course, in other embodiments of the present application, the preset time may also be other time values determined according to the signal search capability of the terminal. The present disclosure is not limited thereto.

In an embodiment of the present application, a method for detecting whether each downlink subframe has downlink scheduling includes:

and detecting whether the downlink subframe has downlink scheduling or not according to the downlink control information of the downlink subframe. The downlink control information DCI is identification information of a downlink subframe, and the downlink control information DCI includes service scheduling information of the downlink subframe. Through the DCI of the downlink subframe, the service scheduling condition of the downlink subframe can be obtained.

In other embodiments of the present application, it may also be determined whether the downlink subframe has downlink scheduling in other manners or information.

S240: and if it is detected that a certain downlink subframe has no downlink scheduling in the preset time, canceling downlink service of a downlink subframe behind the downlink subframe, and adjusting timing in the downlink subframe according to the searched synchronous signal.

Since the physical layer is likely not to have searched for the synchronization signal within the preset time. Therefore, if the downlink subframe has downlink scheduling within the preset time, the downlink service of the downlink subframe can be maintained first until the downlink subframe without downlink scheduling is detected, which indicates that the downlink task is temporarily terminated at this time, and the subsequent downlink service is cancelled at this time, so that the ongoing downlink service is not affected. After canceling the subsequent downlink service, if the synchronization signal is searched, the timing can be immediately adjusted in the downlink subframe, and if the synchronization signal is not searched, the timing can be adjusted in the downlink subframe after the synchronization signal is searched. The downlink service of the subsequent downlink subframe can be recovered after the timing adjustment is completed, and the conflict with the downlink data receiving service can be avoided, so that the data abnormity can be avoided.

As shown in fig. 5, the method may further include:

s250: if each downlink subframe has downlink scheduling in the preset time, cancelling downlink services of one or more downlink subframes after the preset time, and adjusting timing in the one or more downlink subframes according to the synchronization signal.

And because each downlink subframe has downlink scheduling in the preset time, the downlink service is not terminated all the time. And after the preset time, the physical layer already searches the synchronous signal, and the timing is adjusted immediately under the condition. Then, the downlink service of one or more downlink subframes (for example, the first downlink subframe after the preset time, or any other designated one or more downlink subframes) is cancelled after the preset time, and when the timing of the one or more downlink subframes is adjusted, the adjustment timing can be prevented from colliding with the downlink service, and the impact on the downlink service is also small.

Based on the methods provided by the embodiments corresponding to fig. 1 to fig. 4, the present disclosure also provides a device for adjusting the timing of the secondary cell activation process. The apparatus may be applied to a terminal having a carrier aggregation function. Fig. 8 is a schematic block structure diagram of an embodiment of a timing adjustment apparatus for a secondary cell activation procedure according to the present disclosure. Specifically, as shown in fig. 8, the apparatus may include:

a secondary cell searching and adding module 101 configured to search for a synchronization signal of a target secondary cell in response to an instruction to add the target secondary cell sent by the base station.

An activation processing module 102, configured to perform activation processing on the target secondary cell in response to a secondary cell activation instruction sent by the base station.

A timing adjustment module 103 configured to adjust timing in an uplink subframe according to the synchronization signal after searching for the synchronization signal.

In another embodiment of the present disclosure, the activation processing module 102 may include:

a receiving module 1021, configured to receive, through the physical layer, a data packet for activating the secondary cell sent by the base station.

An analyzing module 1022 configured to analyze the data packet through a media access control layer to obtain the secondary cell activation instruction.

And an activation module 1023, configured to perform activation processing on the target secondary cell through a physical layer in response to the secondary cell activation instruction.

In one embodiment of the present disclosure, the secondary cell search adding module 101 may include:

an auxiliary cell adding module 1011 configured to add a target auxiliary cell through a radio resource control layer and issue a connection update mode message to a physical layer in response to an instruction to add the target auxiliary cell sent by a base station;

a synchronization signal searching module 1012 configured to search for a synchronization signal of the target secondary cell by the physical layer in response to the connection update mode message.

For the same or similar processes related to the above-mentioned apparatuses as those in the embodiments shown in fig. 1 to 4, specific implementations may be implemented according to the implementations provided in the embodiments corresponding to fig. 1 to 4.

Based on the methods provided by the embodiments corresponding to fig. 2, fig. 5 to fig. 7, the present disclosure further provides another secondary cell activation procedure timing adjustment apparatus. The apparatus may be applied to a terminal having a carrier aggregation function. Fig. 9 is a schematic block structure diagram of another apparatus for adjusting timing of a secondary cell activation procedure according to an embodiment of the present disclosure. Specifically, as shown in fig. 9, the apparatus may include:

a secondary cell searching and adding module 201 configured to search a synchronization signal of a target secondary cell in response to an instruction to add the target secondary cell from the base station;

an activation processing module 202, configured to perform activation processing on the target secondary cell in response to a secondary cell activation instruction sent by a base station;

a downlink scheduling detection module 203 configured to detect whether each downlink subframe has downlink scheduling within a preset time after the activation processing starts;

the timing adjustment module 204 is configured to cancel the downlink service of a downlink subframe after a certain downlink subframe if it is detected that the downlink subframe has no downlink scheduling within the preset time, and adjust timing in the downlink subframe according to the searched synchronization signal.

In an embodiment of the present disclosure, the timing adjustment module 204 is further configured to cancel downlink services of one or more downlink subframes after the preset time if each downlink subframe has downlink scheduling in the preset time, and adjust timing in the one or more downlink subframes according to the synchronization signal.

In an embodiment of the present disclosure, the detecting whether each downlink subframe has a downlink scheduling mode may include:

In one embodiment of the present disclosure, the apparatus may further include:

a downlink traffic control module 205, configured to recover the downlink traffic of the subsequent downlink subframe after the timing adjustment is completed.

In an embodiment of the present disclosure, the activation processing module 202 may include:

a receiving module 2021, configured to receive, by the physical layer, a data packet for activating the secondary cell sent by the base station;

an analysis module 2022 configured to analyze the data packet through a media access control layer to obtain the secondary cell activation instruction;

an activating module 2023, configured to perform activation processing on the target secondary cell through a physical layer in response to the secondary cell activation instruction.

In an embodiment of the present disclosure, the secondary cell search adding module 201 may include:

a secondary cell adding module 2011, configured to, in response to an instruction for adding a target secondary cell sent by the base station, add the target secondary cell through the radio resource control layer and issue a connection update mode message to the physical layer;

a synchronization signal search module 2012 configured to search for a synchronization signal of the target secondary cell by the physical layer in response to the connection update mode message.

For the processes related to the above devices, which are the same as or similar to the processes in the embodiments shown in fig. 2, 5, 6, and 7, specific implementations may be implemented according to the implementations provided in the embodiments corresponding to fig. 2, 5, 6, and 7.

Based on the method for adjusting the timing of the activation process of the secondary cell described in the above embodiments, the present disclosure further provides a terminal. Fig. 10 is a schematic structural diagram illustrating one possible design of a terminal according to an embodiment of the present disclosure. Specifically, as shown in fig. 10, the terminal may include:

a processor 301. The processor 301 is configured to control and manage the actions of the terminal, and perform various functions to support communication services provided by the control device.

A memory 302 for storing processor-executable instructions. The memory 302 is used for storing executable instructions and data of the terminal for performing the beam determination method provided by the embodiment of the present disclosure, and the executable instructions include computer operation instructions. The computer program code stored by the memory 302 may be executed by the processor 301.

The processor 301 is configured to execute the instructions to support the terminal to implement the method flows executed by the terminal in the embodiments shown in fig. 1, fig. 2, fig. 3, and fig. 4.

The transmitter/receiver 303 is used to support the terminal UE to communicate with the base station.

The communication module 304 is used for supporting communication between the terminal and other network devices, for example, supporting communication with other terminals, and the communication module 304 may include a communication interface between the terminal and other terminals.

Based on the method for adjusting the timing of the activation process of the secondary cell described in the above embodiments, the present disclosure further provides a terminal. Fig. 11 is a block diagram illustrating one possible design of a terminal according to another embodiment of the present disclosure. Specifically, as shown in fig. 11, the terminal may include:

a processor 401. The processor 401 is configured to control and manage the actions of the terminal, and perform various functions to support communication services provided by the control device.

A memory 402 for storing processor-executable instructions. The memory 402 is used for storing executable instructions and data of the terminal for performing the beam determination method provided by the embodiments of the present disclosure, and the executable instructions include computer operation instructions. The computer program code stored by the memory 402 may be executed by the processor 401.

The processor 401 is configured to execute the instructions to support the terminal to implement the method flows executed by the terminal in the embodiments shown in fig. 2, fig. 5, fig. 6, and fig. 7.

The transmitter/receiver 403 is used to support the terminal UE to communicate with the base station.

The communication module 404 is used for supporting communication between the terminal and other network devices, for example, supporting communication with other terminals, and the communication module 404 may include a communication interface between the terminal and other terminals.

It is clear to those skilled in the art that the embodiments of the present disclosure may be referred to each other, for example, for convenience and brevity of description, the specific working processes of the units or modules in the above-described apparatus and apparatus may be described with reference to the corresponding processes in the foregoing method embodiments.

It is understood that the processor described in the embodiments of the present disclosure may be a Central Processing Unit (CPU), a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, DSPs, and microprocessors, among others.

The steps of a method or algorithm described in connection with the disclosure herein may be embodied in hardware, in software instructions executed by a processor, or in a computer program product. The software instructions may consist of corresponding software modules that may be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. Additionally, the ASIC may reside in user equipment. Of course, the processor and the storage medium may reside as discrete components in user equipment.

Those skilled in the art will recognize that, in one or more of the examples described above, the functions described in this disclosure may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

In the several embodiments provided in the present disclosure, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways without departing from the scope of the present disclosure. For example, the above-described embodiments are merely illustrative, and for example, the division of the modules or units is only one logical functional division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort. Additionally, the schematic diagrams of the described systems, devices, and methods, as well as different embodiments, may be combined or integrated with other systems, modules, techniques, or methods without departing from the scope of the present disclosure. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some interfaces, and may be in an electronic, mechanical or other form.

The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present disclosure, and all the changes or substitutions should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A timing adjustment method for a secondary cell activation process is applied to a terminal, and the method comprises the following steps:

if it is detected that a certain downlink subframe has no downlink scheduling in the preset time, cancelling downlink service of a downlink subframe behind the downlink subframe, and adjusting timing in the downlink subframe according to the searched synchronous signal;

if each downlink subframe has downlink scheduling in the preset time, cancelling downlink services of one or more downlink subframes after the preset time, and adjusting timing in the one or more downlink subframes according to the synchronization signal.

2. The method for adjusting timing of an activation procedure of a secondary cell as claimed in claim 1, wherein the manner for detecting whether each downlink subframe has downlink scheduling includes:

3. The method for adjusting timing of a secondary cell activation procedure in claim 1, wherein the method further comprises:

and after the timing adjustment is completed, recovering the downlink service of the subsequent downlink subframe.

4. The method of claim 1, wherein the performing activation processing on the target secondary cell in response to a secondary cell activation command sent by a base station comprises:

5. The method of claim 1, wherein searching for the synchronization signal of the target secondary cell in response to the instruction from the base station to add the target secondary cell comprises:

responding to an instruction of adding a target auxiliary cell sent by a base station, adding the target auxiliary cell through a wireless resource control layer and sending a connection updating mode message to a physical layer;

6. A timing adjustment device for a secondary cell activation procedure, applied to a terminal, the device comprising:

a downlink scheduling detection module configured to detect whether each downlink subframe has downlink scheduling within a preset time after the activation processing starts;

a timing adjustment module configured to cancel downlink traffic of a downlink subframe after a certain downlink subframe if it is detected that the downlink subframe has no downlink scheduling within the preset time, and adjust timing in the downlink subframe according to the searched synchronization signal;

the timing adjustment module is further configured to cancel downlink traffic of one or more downlink subframes after the preset time if each downlink subframe has downlink scheduling within the preset time, and adjust timing in the one or more downlink subframes according to the synchronization signal.

7. The apparatus for adjusting timing of secondary cell activation procedure according to claim 6, wherein the manner for detecting whether each downlink subframe has downlink scheduling includes:

8. The apparatus for adjusting timing of secondary cell activation procedure as claimed in claim 6, wherein the apparatus further comprises:

9. The apparatus for adjusting timing of secondary cell activation procedure in claim 6, wherein the activation processing module comprises:

10. The apparatus for adjusting timing of secondary cell activation procedure in claim 6, wherein the secondary cell search adding module comprises:

11. A terminal, comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to carry out the method of any one of claims 1 to 5 when executing the instructions.