WO2020243888A1

WO2020243888A1 - Wireless communication apparatus and carrier switching method

Info

Publication number: WO2020243888A1
Application number: PCT/CN2019/089894
Authority: WO
Inventors: 林雁; 沈秀勇
Original assignee: 华为技术有限公司
Priority date: 2019-06-03
Filing date: 2019-06-03
Publication date: 2020-12-10
Also published as: CN112400339A

Abstract

Provided in the embodiments of the present application are a wireless communication device and a carrier switching method, which are used for reducing an interruption time of data services when carrier switching is performed. The wireless communication apparatus comprises: a plurality of transmission channels, wherein a first transmission channel of the plurality of transmission channels is used for sending data on a first member carrier in a first time period, and a second transmission channel of the plurality of transmission channels is used for sending data on the first member carrier in the first time period and sending data on a second member carrier in a second time period; a first local oscillator used for selectively providing, in the first time period, a first local oscillator signal for a first mixer in the first transmission channel and a second mixer in the second transmission channel; and a second local oscillator used for selectively providing, in the second time period, a second local oscillator signal for the second mixer.

Description

Wireless communication device and carrier switching method

Technical field

This application relates to the field of communication technology, and in particular to a wireless communication device and a carrier switching method.

Background technique

In order to improve the performance of the communication system, a feasible technical solution is component carrier switching (CC switching). That is, the terminal can switch from one component carrier to another component carrier when transmitting data to the base station. Among them, component carrier switching is sometimes called carrier switching or carrier selection. For example, if the channel quality of the current carrier is poor, you can switch to another carrier with better channel quality through the carrier switching process; or, if the current carrier has fewer uplink time slots, you can switch to another carrier with better channel quality through the carrier switching process. Carriers with multiple uplink time slots are used for HARQ-ACK (hybrid automatic repeat request acknowledgement) feedback for data transmission or downlink services. Carrier switching can increase the throughput of uplink traffic channel data and reduce the HARQ-ACK feedback delay of downlink traffic channel data. During the terminal's carrier switching process, the terminal's uplink data transmission may be interrupted, which will undoubtedly have an adverse effect on system performance. It is not difficult to understand that the longer the interruption time of carrier switching, the greater the impact on uplink data throughput and downlink feedback delay. Therefore, in order to improve the throughput of uplink traffic channel data and reduce the HARQ-ACK feedback delay of downlink traffic channel data, there is a need for fast switching between uplink carriers.

In summary, how to perform fast switching between carriers so as to reduce the service interruption time during carrier switching is an urgent problem to be solved.

Summary of the invention

The embodiments of the present application provide a wireless communication device and a carrier switching method to reduce the interruption time of data services when performing carrier switching.

In a first aspect, an embodiment of the present application provides a wireless communication device, the wireless communication device includes: a plurality of transmission channels, a first transmission channel of the plurality of transmission channels is used to transmit on a first component carrier in a first time period Data, the second transmission channel of the multiple transmission channels is used to send data on the first component carrier in the first time period, and to send data on the second component carrier in the second time period; the first local oscillator is used for Selectively provide the first local oscillator signal for the first mixer in the first transmission channel and the second mixer in the second transmission channel in the first time period; the second local oscillator is used to selectively The second local oscillator signal is provided for the second mixer in the second time period.

Wherein, the multiple transmitting channels, the first local oscillator and the second local oscillator may be integrated in the first integrated circuit chip, for example, integrated in the radio frequency chip.

With the above solution, since the first component carrier is sent through the first transmitting channel and the second transmitting channel in the first time period, the first local oscillator is selectively used as the first mixer and the second mixer in the first time period. The mixer provides the first local oscillator signal, which can realize the mixing of the first mixer and the second mixer according to the first local oscillator signal, thereby realizing the transmission of the first component carrier; similarly, since the second component carrier is in The second local oscillator is sent through the second transmitting channel during the second time period, so the second local oscillator selectively provides the second local oscillator signal for the second mixer in the second time period, which can realize the second mixer according to the second local oscillator. The vibration signal is mixed to realize the transmission of the second component carrier.

Since the local oscillator signal is selectively provided by the first local oscillator and the second local oscillator, the first local oscillator can be selectively enabled to output the first local oscillator according to the requirements of the effective time of the first local oscillator signal during carrier switching. Or selectively enable the second local oscillator to output the second local oscillator signal according to the requirement of the effective time of the second local oscillator signal, thereby shortening the interruption time. Taking the first time period earlier than the second time period (ie switching from the first component carrier to the second component carrier) as an example, in the first time period, the first local oscillator outputs the first local oscillator signal; While providing the first local oscillator signal to the first mixer and the second mixer (that is, while transmitting the first component carrier), the second local oscillator can be selectively activated in advance, but the second local oscillator is not The output of the oscillator is provided to the second mixer; after the transmission of the first component carrier is completed, the second local oscillator can be selectively enabled (that is, the output of the second local oscillator is provided to the second mixer). The second local oscillator only needs a short time to reach a stable state, and stably outputs the second local oscillator signal, thereby sending data on the second component carrier in the second time period. That is to say, the interval between the first time period and the second time period is short, so the service interruption time during carrier switching is short, thereby reducing the impact of carrier switching on uplink data throughput and downlink feedback delay.

In a possible design, the first local oscillator is coupled with the first mixer through the first switch unit, and is coupled with the second mixer through the second switch unit; the second local oscillator is coupled with the second mixer through the third switch unit. Mixer coupling; in the first time period, the first switch unit and the second switch unit are in the closed state, and the third switch unit is in the off state; in the second time period, the first switch unit and the second switch unit In the open state, the third switch unit is in the closed state.

With the above solution, the first switch unit, the second switch unit, and the third switch unit can be switched to selectively provide the first local oscillator signal for the first mixer and provide the first local oscillator for the second mixer. Oscillation signal and second local oscillation signal.

In addition, the wireless communication device may further include: a controller for controlling the third switch unit to change from a closed state to an open state at the end of the second time period when the first time period is later than the second time period Control the first switch unit and the second switch unit to change from the open state to the closed state at the beginning of the first time period; and, when the first time period is earlier than the second time period, control the first switch The unit and the second switch unit change from the closed state to the open state at the end of the first time period, and control the third switch unit to change from the open state to the closed state at the beginning of the second time period.

With the above solution, when the first time period is later than the second time period, the second component carrier has been transmitted at the end of the second time period, so the controller can control the third switch unit to change from the closed state. In the disconnected state, the transmission of the second component carrier is stopped; at the beginning of the first time period, the transmission of the first component carrier needs to be started, so at this time the controller can control the first switching unit and the second switching unit to change from the disconnected state. In the closed state, the transmission of the first component carrier is started. In the case that the first time period is earlier than the second time period, the first component carrier has been transmitted at the end of the first time period, so at this time the controller can control the first switch unit and the second switch unit in the first time period. The end time of the time period changes from the closed state to the open state, and the transmission of the first component carrier is stopped; at the beginning of the second time period, it is necessary to start sending the second component carrier. Therefore, the controller can control the third switch unit by The disconnected state is changed to the closed state, and the transmission of the second component carrier is started.

In a possible design, the controller is also used for: in the case that the first time period is later than the second time period, before the end of the second time period arrives, send the first control to the first local oscillator Signal, the first control signal is used to instruct the first local oscillator to configure the first working parameter, and the first working parameter is applicable to the first component carrier; when the first time period is earlier than the second time period, the first time period Before the end time of, send a second control signal to the second local oscillator, the second control signal is used to instruct the second local oscillator to configure the second working parameter, and the second working parameter is applicable to the second component carrier.

With the above solution, in the case of switching from the second component carrier to the first component carrier, the first local oscillator can be activated in advance during the transmission process of the second component carrier, that is, it is configured before the end of the second time period. The first working parameter of the first local oscillator enables the first local oscillator to be started in advance; in the case of switching from the first component carrier to the second component carrier, the second local oscillator can be started in advance during the transmission of the first component carrier Vibrate, that is, configure the second working parameter of the second local oscillator before the end of the first time period starts, so that the second local oscillator can be started in advance.

Further, the controller is also used to configure the first working parameter to take effect at the first time when the first time period is later than the second time period, and the time difference between the first time and the start time of the first time period is greater than or Equal to the stabilization time of the first local oscillator; when the first time period is earlier than the second time period, the second working parameter is configured to take effect at the second time, and the time difference between the second time and the start time of the second time period is greater than or Equal to the stabilization time of the second local oscillator.

With the above solution, when the first time period is later than the second time period, the first local oscillator can stably output the first local oscillator signal at the beginning of the first time period. In the case that the first time period is earlier than the second time period, the second local oscillator can stably output the second local oscillator signal at the beginning of the second time period.

In a possible design, the first component carrier may be a carrier transmitted by dual antennas on the new air interface uplink NR UL, and the second component carrier may be a carrier transmitted by a single antenna on the Long Term Evolution uplink LTE UL. Or, the first component carrier is a carrier transmitted by dual antennas on LTE UL, and the second component carrier is a carrier transmitted by single antenna on NR UL.

Among them, the first component carrier and the second component carrier can be used for non-independent deployment of NSA networking.

In another possible design, the first component carrier may be a carrier transmitted by dual antennas on NR UL, and the second component carrier may be a carrier transmitted by single antenna on SUL.

Among them, the first component carrier and the second component carrier can be used for the NR node of the NSA networking; or, the first component carrier and the second component carrier can be used for the independent deployment of the SA networking.

In another possible design, the first component carrier is a carrier for dual-antenna transmission on NR UL, and the second component carrier is a carrier for single antenna transmission on NR UL; or, the first component carrier is dual-antenna transmission on LTE UL The second component carrier is a carrier transmitted by a single antenna on LTE UL.

Among them, the first component carrier and the second component carrier are used in a dual-connection DC networking that belongs to the same radio access technology RAT.

In the second aspect, an embodiment of the present application provides a wireless communication device. The wireless communication device includes: a plurality of transmission channels, a first transmission channel of the plurality of transmission channels is used to send data on a first component carrier in a first time period, and to send data on a second component carrier in a second time period Data; the second transmission channel of the multiple transmission channels is used to send data on the first component carrier in the first time period, and to send data on the second component carrier in the second time period; the first local oscillator is used for Selectively provide the first local oscillator signal for the first mixer in the first transmission channel and the second mixer in the second transmission channel in the first time period; the second local oscillator is used to selectively The second local oscillator signal is provided for the first mixer and the second mixer in the second time period.

Wherein, the first mixer, the second mixer, the first local oscillator circuit, and the second local oscillator circuit may be integrated in the first integrated circuit chip, for example, integrated in the radio frequency chip.

With the above solution, since the first component carrier is sent through the first transmitting channel and the second transmitting channel in the first time period, the first local oscillator is selectively used as the first mixer and the second mixer in the first time period. The mixer provides the first local oscillator signal, which can realize the mixing of the first mixer and the second mixer according to the first local oscillator signal, thereby realizing the transmission of the first component carrier; similarly, since the second component carrier is in In the second time period, it is sent through the first transmitting channel and the second transmitting channel, so the second local oscillator selectively provides the second local oscillator signal for the first mixer and the second mixer in the second time period, The first mixer and the second mixer can be mixed according to the second local oscillator signal, so as to realize the transmission of the first component carrier.

Since the local oscillator signal is selectively provided by the first local oscillator and the second local oscillator, the first local oscillator can be selectively enabled to output the first local oscillator according to the requirements of the effective time of the first local oscillator signal during carrier switching. Or selectively enable the second local oscillator to output the second local oscillator signal according to the requirement of the effective time of the second local oscillator signal, thereby shortening the interruption time. Taking the first time period earlier than the second time period (ie switching from the first component carrier to the second component carrier) as an example, in the first time period, the first local oscillator outputs the first local oscillator signal; While providing the first local oscillator signal to the first mixer and the second mixer (that is, while transmitting the first component carrier), the second local oscillator can be selectively activated in advance, but the second local oscillator is not The output of the oscillator is provided to the second mixer; after the transmission of the first component carrier is completed, the second local oscillator can be selectively enabled (that is, the output of the second local oscillator is provided to the second mixer). Since the second local oscillator has been activated in advance, it only takes a short time to reach a stable state, and stably output the second local oscillator signal, thereby sending data on the second component carrier in the second time period. Since the interval between the first time period and the second time period is short, the service interruption time during carrier switching is short, thereby reducing the influence of carrier switching on uplink data throughput and downlink feedback delay.

In a possible design, the first local oscillator is coupled with the first mixer through the first switch unit, and is coupled with the second mixer through the second switch unit; the second local oscillator is coupled with the second mixer through the third switch unit. The mixer is coupled to the first mixer through the fourth switch unit; in the first time period, the first switch unit and the second switch unit are in the closed state, and the third switch unit and the fourth switch unit are in the open state State; In the second time period, the first switch unit and the second switch unit are in the off state, and the third switch unit and the fourth switch unit are in the closed state.

With the above solution, the first switch unit, the second switch unit, the third switch unit, and the fourth switch unit can be switched to selectively provide the first local oscillator signal and the second local oscillator signal to the first mixer. , And provide the first local oscillator signal and the second local oscillator signal for the second mixer.

In a possible design, the wireless communication device provided in the second aspect may further include a controller for controlling the third switch unit and the fourth switch when the first time period is later than the second time period The unit changes from the closed state to the open state at the end of the second time period, and controls the first switching unit and the second switching unit to change from the open state to the closed state at the beginning of the first time period; When the time period is earlier than the second time period, control the first switching unit and the second switching unit to change from the closed state to the open state at the end of the first time period, and control the third and fourth switching units to The start moment of the second time period changes from the open state to the closed state.

With the above solution, when the first time period is later than the second time period, the second component carrier has been transmitted at the end of the second time period, so the controller can control the third switch unit and the fourth switch at this time The unit changes from the closed state to the open state, and stops sending the second component carrier; at the beginning of the first time period, it needs to start sending the first component carrier, so the controller can control the first switching unit and the second switching unit at this time From the open state to the closed state, the transmission of the first component carrier is started. In the case that the first time period is earlier than the second time period, the first component carrier has been transmitted at the end of the first time period, so at this time the controller can control the first switch unit and the second switch unit in the first time period. The end time of the time period changes from the closed state to the open state, and the transmission of the first component carrier is stopped; at the beginning of the second time period, it is necessary to start sending the second component carrier, so the controller can control the third switch unit and The fourth switch unit changes from the open state to the closed state, and starts the transmission of the second component carrier.

In addition, the above-mentioned controller may also be used to send a first control signal to the first local oscillator before the end of the second time period arrives when the first time period is later than the second time period. The signal is used to instruct the first local oscillator to configure the first working parameter, and the first working parameter is applicable to the first component carrier; when the first time period is earlier than the second time period, before the end of the first time period arrives , Sending a second control signal to the second local oscillator, where the second control signal is used to instruct the second local oscillator to configure the second working parameter, and the second working parameter is applicable to the second component carrier.

With the above solution, in the case of switching from the second component carrier to the first component carrier, the first local oscillator can be activated in advance during the transmission process of the second component carrier, that is, it is configured before the end of the second time period. The first working parameter of the first local oscillator enables the first local oscillator to be started in advance. In the case of switching from the first component carrier to the second component carrier, the second local oscillator can be started in advance during the transmission of the first component carrier, that is, the second local oscillator is configured before the end of the first time period. The second working parameter of the, so that the second local oscillator can be started in advance.

Further, the controller is further configured to configure the first working parameter to take effect at the first time when the first time period is later than the second time period, and the time difference between the first time and the start time of the first time period is greater than Or equal to the stabilization time of the first local oscillator; when the first time period is earlier than the second time period, the second working parameter is configured to take effect at the second time, and the time difference between the second time and the start time of the second time period is greater than Or equal to the stabilization time of the second local oscillator.

With the above solution, in the case of switching from the second component carrier to the first component carrier, the first local oscillator can stably output the first local oscillator signal at the beginning of the first time period. In the case of switching from the first component carrier to the second component carrier, the second local oscillator can stably output the second local oscillator signal at the beginning of the second time period.

In a possible design, the first component carrier may be a carrier transmitted by dual antennas on NR UL, and the second component carrier may be a carrier transmitted by dual antennas on LTE UL.

In another possible design, the first component carrier is a carrier for dual-antenna transmission on NR UL, and the second component carrier is a carrier for dual-antenna transmission on NR UL; or, the first component carrier is a dual-antenna transmission on LTE UL. The second component carrier is the carrier for dual-antenna transmission on LTE UL.

Among them, the first component carrier and the second component carrier are used for DC networking belonging to the same RAT.

In the third aspect, embodiments of the present application also provide a carrier switching method, which can be applied to the wireless communication device provided in the first aspect. Specifically, the wireless communication device includes: a plurality of transmission channels, a first transmission channel of the plurality of transmission channels is used to transmit data on a first component carrier in a first time period, and a second transmission channel of the plurality of transmission channels Used to send data on the first component carrier in the first time period, and to send data on the second component carrier in the second time period; the first local oscillator is used to output the first local oscillator signal; the second local oscillator, Used to output the second local oscillator signal.

The method includes: enabling a first local oscillator to provide a first local oscillator signal for a first mixer in a first transmission channel and a second mixer in a second transmission channel within a first time period; The second local oscillator provides the second local oscillator signal for the second mixer in the second time period.

In a possible design, the first local oscillator is coupled with the first mixer through the first switch unit, and is coupled with the second mixer through the second switch unit; the second local oscillator is coupled with the second mixer through the third switch unit. Mixer coupling; then, the method provided by the third aspect specifically includes: in the first time period, controlling the first switching unit and the second switching unit to be in the closed state, and the third switching unit to be in the open state; in the second time In the segment, the first switch unit and the second switch unit are controlled to be in an off state, and the third switch unit is in a closed state.

In a possible design, the method further includes: when the first time period is later than the second time period, controlling the third switch unit to change from the closed state to the open state at the end of the second time period, Control the first switching unit and the second switching unit to change from the open state to the closed state at the beginning of the first time period; and, when the first time period is earlier than the second time period, control the first switching unit and The second switch unit changes from the closed state to the open state at the end of the first time period, and controls the third switch unit to change from the open state to the closed state at the beginning of the second time period.

In addition, the method further includes: when the first time period is later than the second time period, before the end of the second time period arrives, controlling the first local oscillator to configure the first working parameter, and the first working parameter is applicable to The first component carrier; in the case that the first time period is earlier than the second time period, before the end of the first time period arrives, the second local oscillator is controlled to configure the second working parameter, and the second working parameter is applicable to the second Component carrier.

Further, the method further includes: when the first time period is later than the second time period, configuring the first working parameter to take effect at the first time, and the time difference between the first time and the start time of the first time period is greater than or equal to The stabilization time of the first local oscillator; when the first time period is earlier than the second time period, configure the second working parameter to take effect at the second time, and the time difference between the second time and the start time of the second time period is greater than or equal to Settling time of the second local oscillator.

In a fourth aspect, an embodiment of the present application provides a carrier switching method, which is applied to the wireless communication device provided in the second aspect. Specifically, the wireless communication device includes: a plurality of transmission channels, a first transmission channel of the plurality of transmission channels is used to transmit data on a first component carrier in a first time period, and to transmit data on a second member carrier in a second time period Data is sent on the carrier; the second transmission channel of the multiple transmission channels is used to send data on the first component carrier in the first time period, and to send data on the second component carrier in the second time period; the first local oscillator , Used to output the first local oscillator signal; the second local oscillator, used to output the second local oscillator signal.

The method includes: enabling a first local oscillator to provide a first local oscillator signal for a first mixer in a first transmission channel and a second mixer in a second transmission channel within a first time period; The two local oscillators provide a second local oscillator signal for the first mixer and the second mixer in the second time period.

In a possible design, the first local oscillator is coupled with the first mixer through the first switch unit, and is coupled with the second mixer through the second switch unit; the second local oscillator is coupled with the second mixer through the third switch unit. The mixer is coupled to the first mixer through the fourth switch unit. Then, the method provided by the fourth aspect specifically includes: controlling the first switch unit and the second switch unit to be in the closed state, and the third switch unit and the fourth switch unit to be in the open state during the first time period; In the segment, the first switch unit and the second switch unit are controlled to be in an off state, and the third switch unit and the fourth switch unit are in a closed state.

In a possible design, the method further includes: when the first time period is later than the second time period, controlling the third switch unit and the fourth switch unit to change from the closed state at the end of the second time period In the open state, control the first switch unit and the second switch unit to change from the open state to the closed state at the beginning of the first time period; and, when the first time period is earlier than the second time period, control The first switch unit and the second switch unit change from the closed state to the open state at the end of the first time period, and control the third switch unit and the fourth switch unit to change from the open state to the open state at the beginning of the second time period Closed state.

In addition, the technical effects brought by any of the possible design methods in the third aspect can be referred to the technical effects brought by the different design methods in the first aspect, and the technical effects brought by any of the possible design methods in the fourth aspect You can refer to the technical effects brought about by different design methods in the second aspect, which will not be repeated here.

Description of the drawings

FIG. 1 is a schematic structural diagram of a wireless communication system provided by an embodiment of this application;

FIG. 2 is a schematic diagram of a flow of carrier switching of a terminal according to an embodiment of the application;

FIG. 3 is a schematic structural diagram of a terminal provided by an embodiment of the application;

FIG. 4 is a schematic structural diagram of another terminal provided by an embodiment of the application;

FIG. 5 is a schematic structural diagram of a first wireless communication device provided by an embodiment of this application;

FIG. 6 is a schematic structural diagram of a second wireless communication device provided by an embodiment of this application;

FIG. 7 is a schematic diagram of the interruption time on the air interface symbol during carrier switching according to an embodiment of the application;

FIG. 8 is a schematic structural diagram of a third wireless communication device provided by an embodiment of this application;

FIG. 9 is a schematic structural diagram of a fourth wireless communication device provided by an embodiment of this application;

10 is a schematic structural diagram of a fifth wireless communication device provided by an embodiment of this application;

FIG. 11 is a schematic structural diagram of a sixth wireless communication device provided by an embodiment of this application;

FIG. 12 is a schematic flowchart of a carrier switching method provided by an embodiment of this application;

FIG. 13 is a schematic flowchart of another carrier switching method provided by an embodiment of this application.

Detailed ways

The technical solutions provided by the present application will be further described below in conjunction with the drawings and embodiments. It should be understood that the system structure and business scenarios provided in the embodiments of this application are mainly for explaining some possible implementation manners of the technical solution of this application, and should not be interpreted as a unique limitation to the technical solution of this application. Those of ordinary skill in the art can know that with the evolution of the system and the emergence of newer business scenarios, the technical solutions provided in this application are still applicable to the same or similar technical problems.

It should be understood that the technical solutions provided by the embodiments of the present application include wireless communication devices and carrier switching methods. The principles for solving the problems of these technical solutions are the same or similar. In the description of the following specific embodiments, some repetitions may not be repeated, but it should be considered that these specific embodiments have been mutually cited and can be combined with each other.

In a wireless communication system, devices can be divided into devices that provide wireless network services and devices that use wireless network services. Devices that provide wireless network services refer to those devices that make up a wireless communication network, which can be referred to as network equipment or network elements for short. Network equipment usually belongs to operators or infrastructure providers, and these vendors are responsible for operation or maintenance. Network equipment can be further divided into radio access network (RAN) equipment and core network (CN) equipment. A typical RAN device includes a base station (BS).

It should be understood that the base station may sometimes be referred to as a wireless access point (access point, AP) or a transmission reception point (transmission reception point, TRP). Specifically, the base station may be a general node B (generation Node B, gNB) in a 5G new radio (NR) system, or an evolution node B (evolutional Node B, eNB) in a 4G long term evolution (LTE) system. ). According to the physical form or transmit power of the base station, the base station can be divided into a macro base station or a micro base station. Micro base stations are sometimes called small base stations or small cells.

Devices that use wireless network services are usually located at the edge of the network and can be referred to as terminals for short. The terminal can establish a connection with the network device, and provide users with specific wireless communication services based on the service of the network device. It should be understood that because the relationship between the terminal and the user is closer, it is sometimes called a user equipment (UE) or a subscriber unit (SU). In addition, compared to base stations that are usually placed in fixed locations, terminals tend to move with users, and are sometimes referred to as mobile stations (MS). In addition, some network devices, such as relay nodes (RN) or wireless routers, etc., may also be considered as terminals due to their UE identity or belonging to users.

Specifically, the terminal can be a mobile phone, a tablet computer, a laptop computer, a wearable device (such as smart watches, smart bracelets, smart helmets, smart glasses), and others Devices with wireless access capabilities, such as smart cars, various Internet of Things (IOT) devices, including various smart home devices (such as smart meters and smart home appliances) and smart city devices (such as security or surveillance equipment, Intelligent road traffic facilities) etc.

For ease of presentation, this application will take base stations and terminals as examples to describe in detail the technical solutions of the embodiments of this application.

FIG. 1 is a schematic structural diagram of a wireless communication system provided by an embodiment of this application. As shown in Figure 1, the wireless communication system includes a terminal and a base station. According to different transmission directions, the transmission link from the terminal to the base station is recorded as uplink (UL), and the transmission link from the base station to the terminal is recorded as downlink (DL). Similarly, data transmission in the uplink can be referred to as uplink data transmission or uplink transmission, and data transmission in the downlink can be referred to as downlink data transmission or downlink transmission.

In this wireless communication system, the base station can provide communication coverage for a specific geographic area through an integrated or external antenna device. One or more terminals located within the communication coverage area of the base station can access the base station.

It should be understood that the wireless communication system can comply with the wireless communication standards of the third generation partnership project (3GPP), or other wireless communication standards, such as the Institute of Electrical and Electronics Engineers (IEEE) ) 802 series (such as 802.11, 802.15, or 802.20) wireless communication standards. Although only one base station and one terminal are shown in FIG. 1, the wireless communication system may also include other numbers of terminals and base stations. In addition, the wireless communication system may also include other network equipment, such as core network equipment.

The terminal and base station should know the predefined configuration of the wireless communication system, including the radio access technology (RAT) supported by the system and the radio resource configuration specified by the system, such as the radio frequency band and the basic configuration of the CC. The predefined configuration of these systems can be used as a part of the standard protocol of the wireless communication system, or determined by the interaction between the terminal and the base station. The content of the relevant standard protocol may be pre-stored in the memory of the terminal and the base station, or embodied in the hardware circuit or software code of the terminal and the base station.

Among them, CC is a frequency range that complies with system regulations. This section of frequency range can be jointly determined by the center frequency of the CC (denoted as the carrier frequency) and the bandwidth of the CC. Through the pre-defined configuration of the system, the terminal can know the uplink carrier set for uplink data transmission, so as to transmit data on one or more carriers in the uplink carrier set; similarly, the base station can also know the downlink carrier for downlink data transmission Set, so that data is sent on one or more carriers in the downlink carrier set.

In the wireless communication system, the terminal and the base station can support one RAT (for example, 5G NR, 4G LTE or the RAT of the future evolution system), and can also support multiple RATs. The way that the terminal and base station support one RAT can be called standalone (standalone, SA); the way that the terminal and base station support multiple RATs can be called non-standalone (NSA), or dual connectivity (dual connectivity). connectivity, DC). Specifically, dual connectivity includes but is not limited to E-UTRA_NR dual connectivity (EN-DC), NR_E-UTRA dual connectivity (NR E-UTRA dual connectivity, NE-DC), NR_NR dual connectivity (NR_NR) dual connectivity, NR-NR DC), LTE-LTE dual connectivity (LTE-LTE dual connectivity, LTE-LTE DC) or other multi-RAT dual connectivity (MR-DC).

In particular, in the 5G communication system, in order to solve the problem that the coverage of the uplink traffic channel at the cell edge is about a dozen dB lower than the coverage of the downlink traffic channel, a supplementary uplink (SUL) concept is proposed to achieve Complete coverage of uplink and downlink at the edge of the cell. SUL involves frequency bands such as 1.8G/800M/2.1G and is a single uplink carrier. Therefore, in the 5G system, the uplink includes NR UL and SUL. In other words, there are two uplink carriers in the NR cell, one is the NR UL carrier and the other is the SUL carrier.

From the above introduction, it is not difficult to see that the terminal can transmit uplink data through multiple uplinks. For example, in SA, the terminal can transmit uplink data through NR UL and SUL; in NSA, the terminal can transmit through NR UL, LTE UL, SUL, etc. Perform uplink data transmission. Then, the uplink carrier set configured by the system for the terminal may include CCs in multiple frequency bands, for example, including CCs in the NR UL frequency band, CCs in the LTE UL frequency band, and CCs in the SUL frequency band. When the terminal is performing uplink data transmission, it can perform carrier switching in the CC of the uplink carrier set.

It should be noted that in this embodiment of the application, the terminal can perform carrier switching within the frequency band, for example, switching from NR UL CC1 to CC2, or cross-band carrier switching, such as switching from LTE UL CC1 to NR UL. CC2, the embodiment of this application is applicable to both switching modes.

Specifically, the carrier switching process of the terminal may be as shown in Figure 2. After the terminal accesses the base station, the base station may send carrier configuration information and a carrier switching request to the terminal, and the terminal performs the carrier switching operation based on the configuration and scheduling of the base station.

Since the number of transmission channels of the terminal is limited, when performing carrier switching, the terminal needs to adjust the parameters and configuration of the transmission channel to be suitable for transmission of different CCs. For the two component carriers CC1 and CC2 for carrier switching, both component carriers may be transmitted with a single antenna (for example, CC1 is transmitted through antenna 1 and CC2 is transmitted through antenna 2), or one component carrier may be transmitted with a single antenna and the other component carrier Multi-antenna transmission (for example, sending CC1 through antenna 1, or sending CC2 through antenna 1 and antenna 2 at the same time), it is also possible that both component carriers are multi-antenna transmission (for example, sending CC1 through antenna 1 and antenna 2 at the same time, or sending CC1 through antenna 1 Send CC2 simultaneously with antenna 2). For the above three different methods, the terminal adjusts the transmitting channel in different ways when performing carrier switching.

It should be understood that because the embodiment of the application discusses the carrier switching scheme, CC1 and CC2 are sent at different times. For example, the terminal performs uplink data transmission on CC1, and then switches to CC2 for uplink data transmission based on the instructions of the base station. Or, the terminal performs uplink data transmission on CC2, and then switches to CC1 for uplink data transmission based on the instruction of the base station.

Below, firstly, specific examples of application scenarios corresponding to the above three methods are introduced.

Scenario 1: Both CC1 and CC2 are transmitted by a single antenna.

Exemplarily, when the SA method is used and SUL is available, CC1 can use a single antenna to transmit uplink data on NR UL (for example, 3.5G frequency band), and CC2 can use a single antenna to transmit uplink data on SUL (for example, 1.8G frequency band). The terminal can perform carrier switching between CC1 and CC2.

Exemplarily, when the NSA method is adopted and SUL is available, since the carrier frequency and channel bandwidth parameters of LTE UL (for example, 1.8G frequency band) and SUL (for example, 1.8G frequency band) are the same, CC1 can be used in NR UL (for example, 3.5 G band) uses a single antenna to transmit uplink data, CC2 can use a single antenna to transmit uplink data on LTE UL (for example, 1.8G band), and the terminal can perform carrier switching between CC1 and CC2; or, CC1 can be in NR UL ( For example, a single antenna is used to transmit uplink data on the 3.5G frequency band, and CC2 can use a single antenna to transmit uplink data on the SUL (for example, the 1.8G frequency band), and the terminal can perform carrier switching between CC1 and CC2.

Exemplarily, when the NSA method is adopted and there is no SUL, if LTE UL and NR UL are in the semi-static power sharing state, the base station allows the terminal to allow single UL operation (SUO), or to avoid simultaneous transmission of LTE UL and NR UL With the introduction of intermodulation interference, the base station allows the terminal SUO. At this time, the terminal cannot send LTE UL and NR UL at the same time. Then, CC1 can use a single antenna to transmit uplink data on LTE UL, or CC2 can use a single antenna to transmit uplink data on NR UL, and the terminal can perform carrier switching between CC1 and CC2.

Exemplarily, the semi-static power sharing state means that in the NSA scenario, the sum of the linear power configured by the terminal under LTE and the linear power under NR is greater than the maximum linear power configured under the NSA for the terminal, and the base station can Instruct the terminal SUO, that is, the terminal can only send LTE UL or NR UL alone, and cannot send LTE UL and NR UL at the same time, so as to prevent the terminal's power from exceeding the maximum linear power configured under the NSA.

Exemplarily, the intermodulation product refers to that in the NSA scenario, the intermodulation interference of NR UL and LTE UL sent by the terminal happens to fall on LTE or NR DL, thereby causing intermodulation interference to the reception of LTE or NR DL. The base station can instruct the terminal SUO to avoid interference to the receiving sensitivity of LTE or NR DL.

Scenario 2: CC1 single antenna transmission, CC2 multiple antenna transmission.

Exemplarily, when the NSA method is used and there is no SUL, the base station allows the terminal SUO. At this time, CC1 can use a single antenna to transmit uplink data on LTE UL, and CC2 can use multiple antennas to transmit uplink data on NR UL, and the terminal can perform Carrier switching between CC1 and CC2.

Exemplarily, when SA mode is used and SUL is available, in the cell center, CC1 can use a single antenna to send uplink data on SUL, CC2 can use multiple antennas to send uplink data on NR UL, and the terminal can perform between CC1 and CC2. For carrier switching, use additional SUL carriers to increase uplink spectrum resources and improve uplink data throughput; or, at the cell edge, CC1 can use a single antenna to transmit uplink data on SUL, and CC2 can use multiple antennas to transmit on NR UL. With sounding reference signal (SRS), the terminal can perform carrier switching between CC1 and CC2, and use the SUL carrier to overcome the coverage defect of NR UL at the cell edge.

Exemplarily, when the NSA method is used and SUL is available, the base station allows the terminal SUO, CC1 can use a single antenna to transmit uplink data on LTE UL, and CC2 can use multiple antennas to transmit uplink data on NR UL. At this time, SUL does not transmit uplink data. , The terminal can perform carrier switching between CC1 and CC2.

Scenario 3: Both CC1 and CC2 are multi-antenna transmission.

Exemplarily, when the NSA method is used and there is no SUL, the base station allows the terminal SUO. At this time, CC1 can use multiple antennas to transmit uplink data on LTE UL, and CC2 can use multiple antennas to transmit uplink data on NR UL, and the terminal can perform Carrier switching between CC1 and CC2.

Exemplarily, when the NSA method is used and SUL is available, the base station allows the terminal SUO, CC1 can use multiple antennas to transmit uplink data on LTE UL, and CC2 can use multiple antennas to transmit uplink data on NR UL. At this time, SUL does not transmit uplink data. , The terminal can perform carrier switching between CC1 and CC2.

It should be understood that the above application scenarios are only examples. In actual applications, when the terminal performs uplink data transmission on CC1 or CC2, whether to use single antenna transmission or dual antenna transmission can be configured according to application requirements and terminal capabilities. In addition, in the above examples of application scenarios, the cross-band switching of CC1 and CC2 is taken as an example for illustration. In actual applications, CC1 and CC2 may also be located in the same frequency band. Regardless of whether CC1 and CC2 are located in the same frequency band or in different frequency bands, the carrier switching scheme provided in the embodiment of the present application can be used.

In order to explain how the terminal adjusts the transmission channel when performing carrier switching in the above three scenarios, the following first introduces the specific structure of the terminal.

FIG. 3 is a schematic structural diagram of a terminal provided by an embodiment of the application. As shown in Figure 3, the terminal can include application subsystems, memory, mass storage, baseband subsystems, radio frequency intergreted circuit (RFIC), and radio frequency front end. , RFFE) devices and antennas (antenna, ANT), these devices can be coupled through various interconnection buses or other connection methods.

In FIG. 3, ANT_1 represents the first antenna, ANT_N represents the Nth antenna, and N is a positive integer greater than 1. Tx represents the transmission path, Rx represents the reception path, and different numbers represent different paths. FBRx represents the feedback receiving path, PRx represents the main receiving path, and DRx represents the diversity receiving path. HB stands for high frequency and LB stands for low frequency. Both refer to the relative high and low of the frequency. BB stands for baseband. It should be understood that the marks and components in FIG. 3 are for illustrative purposes only, and are only used as a possible implementation manner, and the embodiments of the present application also include other implementation manners.

Among them, the application subsystem can be used as the main control system or main computing system of the terminal to run the main operating system and application programs, manage the software and hardware resources of the entire terminal, and provide users with a user operation interface.

In Figure 3, the RFFE device and RFIC 1 (and optional RFIC 2) can jointly form a radio frequency subsystem. The radio frequency subsystem can be further divided into radio frequency receiving channel (RF receive path) and radio frequency transmitting channel (RF transmit path). The radio frequency receiving channel can receive the radio frequency signal through the antenna, and process the radio frequency signal (such as amplifying, filtering and down-converting) to obtain the baseband signal, and pass it to the baseband subsystem. The radio frequency transmitting channel can receive the baseband signal from the baseband subsystem, perform radio frequency processing (such as up-conversion, amplification and filtering) on the baseband signal to obtain the radio frequency signal, and finally radiate the radio frequency signal into the space through the antenna. Specifically, the radio frequency subsystem may include an antenna switch, an antenna tuner, a low noise amplifier (LNA), a power amplifier (PA), a mixer (mixer), and a local oscillator (LO). ), filters and other electronic devices, which can be integrated into one or more chips as needed. The antenna can sometimes be considered part of the radio frequency subsystem.

The baseband subsystem can extract useful information or data bits from the baseband signal, or convert the information or data bits into a baseband signal to be sent. These information or data bits can be data representing user data or control information such as voice, text, and video.

In addition, since the radio frequency signal is an analog signal, the signal processed by the baseband subsystem is mainly a digital signal, and an analog-to-digital conversion device is also required in the terminal. The analog-to-digital conversion device includes an analog-to-digital converter (ADC) that converts an analog signal into a digital signal, and a digital-to-analog converter (DAC) that converts a digital signal into an analog signal. In the embodiment of the present application, the analog-to-digital conversion device may be arranged in the baseband subsystem or the radio frequency subsystem.

Memory can be divided into volatile memory (volatile memory) and non-volatile memory (non-volatile memory, NVM). Volatile memory refers to the memory in which the data stored inside will be lost when the power supply is interrupted. At present, volatile memory is mainly random access memory (RAM), including static random access memory (static RAM, SRAM) and dynamic random access memory (dynamic RAM, DRAM). Non-volatile memory refers to the memory in which the data stored inside will not be lost even if the power supply is interrupted. Common non-volatile memories include read only memory (ROM), optical discs, magnetic disks, and various memories based on flash memory (flash memory) technology. Generally speaking, volatile memory can be selected for memory, and non-volatile memory, such as magnetic disk or flash memory, can be selected for mass storage.

In the embodiments of the present application, the baseband subsystem and the radio frequency subsystem jointly constitute a communication subsystem, which provides wireless communication functions for the terminal. Generally, the baseband subsystem is responsible for managing the software and hardware resources of the communication subsystem, and can configure the working parameters of the radio frequency subsystem. One or more processing cores of the baseband subsystem may be integrated into one or more chips, which may be referred to as a baseband processing chip or a baseband chip. Similarly, RFIC can be called a radio frequency processing chip or a radio frequency chip. In addition, with the evolution of technology, the functional division of the radio frequency subsystem and the baseband subsystem in the communication subsystem can also be adjusted. For example, integrating some of the functions of the radio frequency subsystem into the baseband subsystem, or integrating some of the functions of the baseband subsystem into the radio frequency subsystem.

FIG. 4 is a schematic structural diagram of another terminal provided by an embodiment of the application. Figure 4 shows some common devices used for radio frequency signal processing in a terminal. It should be understood that although only two radio frequency receiving channels and two radio frequency transmitting channels are shown in FIG. 4, the terminal in the embodiment of the present application is not limited thereto.

For the RF receiving channel, the RF signal received from the antenna is selected by the antenna switch and sent to the RF receiving channel. Since the radio frequency signal received from the antenna is usually very weak, it is usually amplified by LNA. The amplified signal first undergoes the down-conversion processing of the mixer, and then the filter and ADC, and finally completes the radio frequency signal processing. For the radio frequency transmission channel, the baseband signal can be converted into an analog signal through a DAC. The analog signal is converted into a radio frequency signal through the up-conversion processing of the mixer. The radio frequency signal is processed by a filter and a PA, and finally selected by an antenna switch , Radiate outward from a suitable antenna.

Among them, in the mixer, the input signal and the local oscillator signal output by the local oscillator are mixed to achieve up-conversion (corresponding to the radio frequency transmitting channel) or down-conversion (corresponding to the radio frequency receiving channel) operation. Among them, the local oscillator is a common term in the radio frequency field, usually referred to as local oscillator. The local oscillator is sometimes called a frequency synthesizer or frequency synthesizer, or frequency synthesizer for short. The main function of the local oscillator or frequency synthesizer is to provide the specific frequency required for radio frequency processing, such as the frequency of the carrier. Higher frequencies can be implemented by using devices such as phase locked loop (PLL) or delay locked loop (DLL). The lower frequency can be achieved by directly using a crystal oscillator, or by dividing the high frequency signal generated by a device such as a PLL.

For the foregoing uplink carrier switching operation, both CC1 and CC2 can adopt single antenna transmission or multi-antenna transmission. For example, in scenario 1, CC1 can be transmitted on radio frequency transmission channel 1 shown in Figure 4, and CC2 can be transmitted on radio frequency transmission channel 2 shown in Figure 4; in scenario 2, CC1 can be transmitted on radio frequency transmission channel 2 shown in Figure 4 Send on RF transmission channel 1, CC2 can be sent on RF transmission channel 1 and RF transmission channel 2 shown in Figure 4; in scenario 3, CC1 can be sent on RF transmission channel 1 and RF transmission channel 2 shown in Figure 4 Send, CC2 can be sent on the radio frequency transmitting channel 1 and the radio frequency transmitting channel 2 shown in FIG. 4.

It is not difficult to see that in scenario 2, RF transmission channel 2 is used to send both CC1 and CC2. Therefore, when switching the carrier between CC1 and CC2, the parameters of RF transmission channel 2 need to be adjusted; in scenario 3 In the RF transmission channel 1 and the RF transmission channel 2 are used to send both CC1 and CC2. Therefore, when the carrier switching between CC1 and CC2 is performed, the parameters of the RF transmission channel 1 and the RF transmission channel 2 need to be adjusted.

Specifically, when adjusting the parameters of the radio frequency transmission channel, it is necessary to adjust the configuration parameters of various devices, for example, the configuration parameters of the antenna switch, the configuration parameters of the local oscillator, and the configuration parameters of the PA. Among them, after adjusting the parameters, the local oscillator needs a certain time (for example, 130 us to 140 us) to reach a stable working state and output a stable local oscillator signal. Therefore, when performing carrier switching, especially when performing carrier switching in the aforementioned scenario 2 and scenario 3, because there is multiplexing of radio frequency channels between the carriers, and because it takes time to wait for the local oscillator to stabilize, a longer carrier is introduced. During the handover time, the data service is interrupted, which affects the uplink data throughput and the HARQ-ACK feedback delay of the downlink data, and it is difficult to meet the service requirements of fast handover.

Referring to FIG. 5, a wireless communication device provided by an embodiment of this application. Wherein, the wireless communication device 500 includes multiple transmission channels, the first transmission channel 501 of the multiple transmission channels is used to transmit data on the first component carrier in the first time period, and the second transmission channel 502 of the multiple transmission channels It is also used to send data on the first component carrier in the first time period. In addition, the second transmission channel 502 is also used to send data on the second component carrier in the second time period. In addition, the wireless communication device 500 also includes a first local oscillator 503 and a second local oscillator 504.

The first local oscillator 503 is used to selectively provide a first local oscillator signal for the first mixer in the first transmission channel 501 and the second mixer in the second transmission channel 502 in the first time period.

The second local oscillator 504 is used to selectively provide a second local oscillator signal for the second mixer in the second time period.

Among them, the multiple transmission channels, the first local oscillator 503 and the second local oscillator 504 may be integrated in a first integrated circuit chip, for example, may be integrated in an RFIC.

It is not difficult to see that in the wireless communication device 500, the first component carrier is transmitted using multiple antennas (dual antennas), and the second component carrier is transmitted using a single antenna. That is, in the first time period, the first component carrier is transmitted on the first transmission channel 501 and the second transmission channel 502; in the second time period, the second component carrier is transmitted on the second transmission channel 502. In other words, the wireless communication device 500 shown in FIG. 5 is suitable for carrier switching in the second scenario described above. In this scenario, the second transmission channel 502 is time-division multiplexed. Among them, the first time period may be later than the second time period or may be earlier than the second time period.

The following is a four-point description of the above-mentioned wireless communication device.

1. In the wireless communication device 500, each transmission channel corresponds to an antenna unit. If a component carrier is transmitted through two transmission channels in the same time period, it means that the component carrier is transmitted by dual antennas in this time period. If a component carrier is transmitted through a transmission channel in a time period, it means that the component carrier is transmitted by a single antenna in this time period.

2. The transmission channel in the wireless communication device 500 can be regarded as the radio frequency transmission channel in the terminal shown in FIG. 4, which is used to transmit the radio frequency signal through the antenna unit after performing radio frequency processing on the baseband signal; the transmission channel in the wireless communication device 500 It can also be regarded as a collection of the baseband signal processing part and the radio frequency transmission channel in the terminal shown in Figure 4, which is used to convert information or data bits into baseband signals to be sent, and perform radio frequency processing on the baseband signals and pass the radio frequency signals through the antenna. The unit is sent out. In addition, it should be understood that the devices included in the emission channel in the embodiment of this application are not limited to the solution shown in FIG. limited.

3. The wireless communication device 500 includes multiple (at least two) transmission channels, that is, in addition to the first transmission channel 501 and the second transmission channel 502, the wireless communication device 500 may also include other transmission channels. The use of other transmission channels is not limited. For example, the wireless communication device 500 may further include a third transmission channel, which is used to transmit data on the first component carrier in the first time period. Then, the first local oscillator 503 can also selectively provide the first local oscillator signal for the third mixer in the third transmitting channel in the first time period. Since the uses of the other transmission channels except the first transmission channel 501 and the second transmission channel 502 among the multiple radio frequency transmission channels are similar to the first transmission channel 501 or the second transmission channel 502, the focus of this application is Data transmission on the first transmission channel 501 and the second transmission channel 502.

4. In the description of the embodiments of this application, the local oscillator is regarded as a component independent of the transmitting channel. The purpose of this is to reflect that the first local oscillator 503 and the second local oscillator 504 provide the first local oscillator signal and the second local oscillator in a time-sharing manner. Two local oscillator signal. Since the second transmission channel 502 requires both the first local oscillator 503 to provide the first local oscillator signal and the second local oscillator 504 to provide the second local oscillator signal, the first local oscillator 503 and the second local oscillator 503 are not limited in the embodiment of this application. The second local oscillator 504 belongs to a certain transmitting channel. It should be understood that the purpose of such division is only to illustrate the solution of the present application. If other expressions are adopted, the first local oscillator 503 and the second local oscillator 504 can also be regarded as components of the transmitting channel. For example, the first local oscillator 503 can be regarded as a component of the first emission channel 501, and the second local oscillator 504 can be regarded as a component of the second emission channel 502.

With the wireless communication device 500, since the first component carrier is transmitted through the first transmission channel 501 and the second transmission channel 502 in the first time period, the first local oscillator 503 is selectively the first mixed carrier in the first time period. The frequency converter and the second mixer provide the first local oscillator signal, which can realize the mixing of the first mixer and the second mixer according to the first local oscillator signal, thereby realizing the transmission of the first component carrier; similarly, because The second component carrier is sent through the second transmit channel 502 in the second time period, so the second local oscillator 504 selectively provides the second local oscillator signal for the second mixer in the second time period, which can realize the second The mixer performs mixing according to the second local oscillator signal, thereby realizing the transmission of the second component carrier.

Since the local oscillator signal is selectively provided by the first local oscillator 503 and the second local oscillator 504, the output of the first local oscillator 503 can be selectively enabled according to the requirements of the effective time of the first local oscillator signal during carrier switching. The first local oscillator signal or the second local oscillator 504 is selectively enabled to output the second local oscillator signal according to the requirements of the effective time of the second local oscillator signal, thereby shortening the interruption time. Taking the first time period earlier than the second time period (ie switching from the first component carrier to the second component carrier) as an example, in the first time period, the first local oscillator 503 outputs the first local oscillator signal; While the local oscillator 503 provides the first local oscillator signal for the first mixer and the second mixer (that is, while transmitting the first component carrier), the second local oscillator 504 can be selectively activated in advance, but the The output of the second local oscillator 504 is provided to the second mixer; after the transmission of the first component carrier is completed, the second local oscillator 504 can be selectively enabled (that is, the output of the second local oscillator 504 is provided to the second mixer). Frequency converter), at this time, the second local oscillator 504 can reach a stable state in a short time, and output the second local oscillator signal stably, so as to send data on the second component carrier in the second time period. That is to say, the interval between the first time period and the second time period is short, so the service interruption time during carrier switching is short, thereby reducing the impact of carrier switching on uplink data throughput and downlink feedback delay.

Specifically, the first local oscillator 503 and the second local oscillator 504 selectively provide the first local oscillator signal and the second local oscillator signal can be achieved in the following manner: the first local oscillator 503 is mixed with the first through the first switch unit The second local oscillator 504 is coupled to the second mixer through the second switch unit; the second local oscillator 504 is coupled to the second mixer through the third switch unit. In the first time period, the first switch unit and the second switch unit are in the closed state, and the third switch unit is in the off state; in the second time period, the first switch unit and the second switch unit are in the off state, The third switch unit is in a closed state. Specifically, the wireless communication device 500 may be as shown in FIG. 6.

In the first time period, the first transmission channel 501 and the second transmission channel 502 send data on the first component carrier. At this time, the first switch unit and the second switch unit can be closed, and the third switch unit can be disconnected. Therefore, the first local oscillator 503 is coupled with the first mixer and the second mixer, and the first local oscillator signal output by the first local oscillator 503 can be provided to the first mixer and the second mixer; at the same time, Since the third switch unit is turned off, the second local oscillator signal is not provided to the second mixer, and the second local oscillator signal will not affect the transmission of the first component carrier on the second transmission channel 502.

In the second time period, the second transmission channel 502 transmits data on the second component carrier. At this time, the first switch unit and the second switch unit can be disconnected, and the third switch unit can be closed, so the second local oscillator 504 Coupled with the second mixer, the second local oscillator signal output by the second local oscillator 504 can be provided to the second mixer; at the same time, since the first switch unit and the second switch unit are disconnected, the first local oscillator signal It is not provided to the second mixer, and the first local oscillator signal will not affect the transmission of the second component carrier on the second transmission channel 502.

In addition, the wireless communication device 500 may further include a controller, which may control the on-off of the first switch unit, the second switch unit, and the third switch unit according to service requirements.

The control logic of the controller is related to the time sequence of the first time period and the second time period. The following describes the control when the first time period is later than the second time period and the first time period is earlier than the second time period. Specific operations performed by the device.

1. The first time period is later than the second time period.

Specifically, when the first time period is later than the second time period, the controller is used to control the third switch unit to change from the closed state to the open state at the end of the second time period, and control the first switch unit and The second switch unit changes from the open state to the closed state at the beginning of the first time period.

The first time period is later than the second time period, that is, data is first sent on the second transmission channel 502 through the second component carrier, and then data is sent on the first transmission channel 501 and the second transmission channel 502 through the first component carrier, That is, switching from the second component carrier to the first component carrier. In this case, at the end of the second time period, the second component carrier has been transmitted, so at this time the controller can control the third switch unit to change from the closed state to the open state, and stop the transmission of the second component carrier; At the beginning of the first time period, it is necessary to start sending the first component carrier. Therefore, at this time, the controller can control the first switching unit and the second switching unit to change from the open state to the closed state, and start sending the first component carrier.

Further, the controller may also send a first control signal to the first local oscillator 503 before the end of the second time period arrives. The first control signal is used to instruct the first local oscillator 503 to configure the first working parameter. The working parameters are applicable to the first component carrier.

Specifically, the first working parameter may be used to configure the frequency of the local oscillator signal output by the first local oscillator 503. Because in the time period before the arrival of the first time period, the first local oscillator 503 may be used to provide a local oscillator signal with a frequency different from that of the first local oscillator signal. Therefore, before switching to the first component carrier, the first local oscillator 503 The operating parameters of the vibration 503 are configured.

Regarding the above-mentioned timing of configuring the first operating parameter, it can be understood as follows: in the case of switching from the second component carrier to the first component carrier, since the first operating parameter is configured to the first local oscillator 503, the first local oscillator 503 It takes a certain time (130us～140us) to output the first local oscillator signal stably. Therefore, in this application, the first local oscillator 503 can be activated in advance during the transmission of the second component carrier, that is, at the end of the second time period Before starting, configure the first working parameters of the first local oscillator 503 so that the first local oscillator 503 can be started in advance. Therefore, at the end of the second time period, the first local oscillator 503 has been configured with the first working parameters, and the first local oscillator 503 does not need to wait for 130us to 140us to reach stability, thereby shortening the second time period and the first time period Interruption time between. Exemplarily, using the solution provided in this application, the interruption time between the second time period and the first time period may be 0 us to tens of us.

The effective time of the first working parameter can be configured as follows: the first working parameter is configured to take effect at the first moment, and the time difference between the first moment and the start moment of the first time period is greater than or equal to the stabilization time of the first local oscillator. With this configuration, the first local oscillator 503 can stably output the first local oscillator signal at the beginning of the first time period.

It should be understood that when the first time period is later than the second time period, the first local oscillator 503 can remain normally on (that is, always output the first local oscillator signal), or according to the uplink-downlink ratio format configured by the base station , When the first local oscillator 503 is required to output the first local oscillator signal, it is turned on at least 130us to 140us in advance.

In addition, the controller in the wireless communication device 500 can also configure the parameters of other devices in the first transmission channel 501 and the second transmission channel 502 before the arrival of the first time period, for example, by sending a control signal to the parameters of these devices. Perform configuration and set the effective time of the configuration to be a few us or tens of us before the start of the first time period (that is, the stabilization time of other devices). After this time of several us or tens of us, all other devices A stable state is reached. Specifically, the transmission digital front end (TXDFE), radio frequency analog front end (RFAFE), RFFE, and components in the antenna switch in the first transmission channel 501 and the second transmission channel 502 can be To configure the parameters.

2. The first time period is earlier than the second time period.

Specifically, when the first time period is earlier than the second time period, the controller is used to control the first switching unit and the second switching unit to change from the closed state to the open state at the end of the first time period, and control The third switch unit changes from the open state to the closed state at the beginning of the second time period.

The first time period is earlier than the second time period, that is, data is sent on the first transmission channel 501 and the second transmission channel 502 through the first component carrier, and then data is sent on the second transmission channel 502 through the second component carrier. That is, switching from the first component carrier to the second component carrier. In this case, the first component carrier has been transmitted at the end of the first time period, so at this time the controller can control the first switching unit and the second switching unit to change from the closed state at the end of the first time period. In the disconnected state, the transmission of the first component carrier is stopped; at the beginning of the second time period, the transmission of the second component carrier needs to be started, so at this time the controller can control the third switch unit from the open state to the closed state, and start Transmission of the second component carrier.

Further, the controller may also send a second control signal to the second local oscillator 504 before the end of the first time period arrives. The second control signal is used to instruct the second local oscillator 504 to configure the second operating parameters, The working parameters are applicable to the second component carrier.

Specifically, the second operating parameter may be used to configure the frequency of the local oscillator signal output by the second local oscillator 504. Since the second local oscillator 504 may be used to provide a local oscillator signal with a different frequency from the second local oscillator signal in the time period before the arrival of the second time period, the second local oscillator signal needs to be adjusted before switching to the second component carrier. The operating parameters of the vibration 504 are configured.

Regarding the above-mentioned timing of configuring the second operating parameter, it can be understood as follows: in the case of switching from the first component carrier to the second component carrier, since the second operating parameter is configured to the second local oscillator 504, the second local oscillator 504 It takes a certain time (130us～140us) to output the second local oscillator signal stably. Therefore, in this application, the second local oscillator 504 can be activated in advance during the transmission of the first component carrier, that is, at the end of the first time period Before starting, configure the second working parameters of the second local oscillator 504 so that the second local oscillator 504 can be started in advance. Therefore, at the end of the first time period, the second local oscillator 504 has been configured with the second operating parameters, and the second local oscillator 504 does not need to wait for 130us to 140us to reach stability, thereby shortening the first time period and the second time period Interruption time between. Exemplarily, using the solution provided in this application, the interruption time between the first time period and the second time period may be 0 us to tens of us.

The effective time of the second working parameter can be configured as follows: the second working parameter is configured to take effect at the second time, and the time difference between the second time and the start time of the second time period is greater than or equal to the stabilization time of the second local oscillator. With this configuration, the second local oscillator 504 can stably output the second local oscillator signal at the beginning of the second time period.

It should be understood that when the first time period is earlier than the second time period, the second local oscillator 504 can remain normally on (that is, always output the second local oscillator signal), or it can be based on the uplink and downlink ratio format configured by the base station. When the second local oscillator 504 is required to output the second local oscillator signal, it is turned on at least 130 us to 140 us in advance.

In addition, the controller in the wireless communication device 500 can also configure the parameters of other devices in the second transmission channel 502 before the second time period arrives, for example, by sending a control signal to configure the parameters of these devices, and set The time for the configuration to take effect is several us or tens of us before the start of the second time period (that is, the stabilization time of other devices), and after the time of several us or tens of us, other devices reach a stable state. Specifically, the parameters of the devices in the TXDFE, RFAFE, RFFE, and antenna switch in the second transmission channel 502 can be configured.

Exemplarily, as shown in FIG. 7, when the wireless communication device 500 provided by the embodiment of the present application is used to perform carrier switching, the interruption time (0 us ~ tens of us) is less than the stable time of the local oscillator (130 us ~ 140 us), so wireless The communication device 500 can implement fast switching between carriers. Among them, CC1 2T indicates that the first component carrier is transmitted on two antennas, and CC21T indicates that the second component carrier is transmitted on one antenna.

It should be understood that the controller in the embodiment of the present application may be a controller (such as a baseband processor) in the baseband subsystem in the terminal shown in FIG. 3. For example, in the carrier switching process shown in Figure 2, the baseband subsystem determines that the terminal needs to switch from the first component carrier to the second component carrier after receiving the carrier configuration information and the carrier switching request sent by the base station. The device sends control signals to related devices in the RFIC (such as local oscillators and switching units), configures the on-off and working parameters of the related devices, and configures the related devices according to the instructions of the baseband processor to achieve rapid carrier switching.

The above-mentioned controller can also be understood as the controller in the RFIC in the terminal shown in FIG. 3 (for example, the digital signal processor in the RFIC). For example, in the carrier switching process shown in Figure 2, the baseband subsystem determines that the terminal needs to switch from the first component carrier to the second component carrier after receiving the carrier configuration information and the carrier switching request sent by the base station. The device sends control commands to the digital signal processor in the RFIC. After receiving the control command sent by the baseband processor, the digital signal processor in the RFIC adapts it to the control command of the relevant RF device based on the control command, and sends control signals to the relevant device to configure the on-off and working parameters of the relevant device . After the related devices are configured and effective according to the control commands of the RFIC related RF devices, fast carrier switching can be realized.

In addition, the first local oscillator 503 and the second local oscillator 504 selectively provide the first local oscillator signal and the second local oscillator signal can also be achieved in the following manner: the third local oscillator is coupled to the first mixer through a switch unit , The fourth local oscillator and the fifth local oscillator are coupled with the second mixer through a single-pole multi-throw switch. Among them, the third local oscillator and the fourth local oscillator output the first local oscillator signal, and the fifth local oscillator outputs the second local oscillator signal.

In the first time period, the switch unit is closed, and the third local oscillator provides the first local oscillator signal to the first mixer; in addition, the single-pole double-throw switch gates the fourth local oscillator, and the fourth local oscillator moves to the second mixer. The frequency converter provides the first local oscillator signal. In the second time period, the switch unit is turned off, and the third local oscillator no longer provides the first local oscillator signal to the first mixer; in addition, the single-pole double-throw switch gates the fifth local oscillator, and the fifth local oscillator direction The second mixer provides a second local oscillator signal.

It should be understood that the above-mentioned single-pole multi-throw switch is only an implementation way to realize the selective gating of the local oscillator signal, and the above-mentioned single-pole double-throw switch can also be replaced with other devices for gating the local oscillator signal, such as a multiplexer MUX, etc. .

With the wireless communication device 500 provided in the present application, it is possible to quickly switch between the first component carrier and the second component carrier. Among them, the first component carrier multi-antenna (dual antenna) transmission, and the second component carrier single antenna transmission. In practical applications, the first component carrier and the second component carrier may be component carriers in different networking modes. Several specific examples of the first component carrier and the second component carrier are given below.

Specifically, the first component carrier may be a carrier transmitted by dual antennas on NR UL, and the second component carrier may be a carrier transmitted by single antenna on LTE UL. Applied to the foregoing scenario two, when NSA mode is used and SUL is not available, the base station allows the terminal SUO, the first component carrier can be transmitted by dual antennas on NR UL, and the second component carrier can be transmitted by single antenna on LTE UL. The wireless communication device 500 may be used to perform fast switching between the first component carrier and the second component carrier. Or, applied to the foregoing scenario two, when the NSA method is used and SUL is available, the base station allows the terminal SUO. At this time, the terminal does not send SUL. The first component carrier can be transmitted by dual antennas on NR UL, and the second component carrier can be transmitted on LTE A single antenna is used for transmission on the UL. In this case, the wireless communication device 500 may be used to perform fast switching between the first component carrier and the second component carrier.

Specifically, the first component carrier may be a carrier transmitted by dual antennas on NR UL, and the second component carrier may be a carrier transmitted by single antenna on SUL. Applied to the aforementioned scenario two, when the SA method is adopted and SUL is available, at the cell center or cell edge, the first component carrier can be transmitted by dual antennas on NR UL, and the second component carrier can be transmitted by single antenna on SUL. The wireless communication device 500 may be used to perform fast switching between the first component carrier and the second component carrier. Or, applied to the foregoing scenario two, when the NSA method is adopted and SUL is used, the first component carrier and the second component carrier are used for the part of the NR node composed of NSA, and the first component carrier can be transmitted on NR UL using dual antennas. The second component carrier can be transmitted on the SUL by using a single antenna. In this case, the wireless communication device 500 can be used to quickly switch between the first component carrier and the second component carrier.

In addition, the first component carrier may be a carrier transmitted by dual antennas on NR UL, and the second component carrier may be a carrier transmitted by single antenna on NR UL; or the first component carrier may be a carrier transmitted on dual antennas on LTE UL. The second component carrier may be a carrier transmitted by a single antenna on LTE UL. Among them, the first component carrier and the second component carrier are used for DC networking belonging to the same RAT.

It should be noted that the wireless communication device 500 shown in FIG. 5 is also applicable to the aforementioned scenario 1. For example, the second switch unit can be kept disconnected all the time, the first component carrier is transmitted with a single antenna on the first transmission channel, and the second component carrier is transmitted with a single antenna on the second transmission channel. In this case, The first component carrier and the second component carrier can realize 0us seamless switching.

By way of example, FIG. 8 shows a schematic structural diagram of a wireless communication device provided by an embodiment of the present application. The wireless communication device can be regarded as a specific example of the wireless communication device 500. After the baseband processor performs signal processing, the baseband signal is sent to the serializer/deserializer (Serdes) and then divided into two transmission channels. Each transmitting channel contains TXDFE, system clock, DAC, filter, mixer, PA, and then the radio frequency signal is selected by an antenna switch module (ASM) and then sent out through an antenna unit (ANT). In addition, the wireless communication device also includes two phase-locked loops (PLL0 and PLL1) to provide local oscillator signals for the mixer.

Specifically, CC1 1T can be configured on the TX1 channel; CC2 1T can be configured on the TX0 channel, and the other 1T can be configured on the TX1 channel. That is, CC1 implements single antenna transmission through TX1, and CC2 implements dual antenna transmission through TX0 and TX1.

When switching from CC2 to CC1, PLL1 can be started early. TX0 and TX1 still send the remaining data of CC2; after the PLL1 130us ~ 140us is stable, the remaining data of CC2 is sent, open switches K0 and K1, at this time, you can close PLL0, close switch K2, and adjust TX1 to the transmit power of CC1. TX1 sends the uplink service data of CC1, and TX0 maintains a low-power operation state.

When switching from CC1 to CC2, PLL0 can be started early. After CC1 sends the data of TX1, open switch K2, and PLL1 can be closed at this time; in addition, close switches K0 and K1, TX0 and TX1 are adjusted to the transmission power of CC2, and TX0 and TX1 send the uplink traffic channel data of CC2.

In addition, the wireless communication device shown in FIG. 8 may also support CC1 single antenna transmission and CC2 single antenna transmission. For example, switch K1 is open, switches K0 and K2 are closed, CC1 is sent through TX1, and CC2 is sent through TX0. Since the two channels of CC1 and CC2 do not affect each other, CC1 and CC2 can achieve 0us seamless switching.

It should be noted that in the wireless communication device shown in FIG. 8, TX0 and TX1 can be kept in a normally open state, that is, working parameters such as sampling rate, frequency, and calibration parameters have been configured. In addition, in this example, PLL0 and PLL1 can be normally open, and TX0 and TX1 can be gated only by the closed and open state of the switch; the start and stop of PLL0 and PLL1 and the state of the switch can also be controlled according to the uplink and downlink ratio format , Realize the low-power processing that is off-the-shelf.

In summary, using the wireless communication device 500 provided by the embodiment of the present application, since the first component carrier is transmitted through the first transmission channel 501 and the second transmission channel 502 in the first time period, the first local oscillator 503 is selectively In the first time period, the first local oscillator signal is provided for the first mixer and the second mixer, and the first mixer and the second mixer can be mixed according to the first local oscillator signal, thereby realizing the first Component carrier transmission; similarly, since the second component carrier is transmitted through the second transmission channel 502 in the second time period, the second local oscillator 504 selectively provides the second mixer for the second mixer in the second time period. Two local oscillator signals can realize that the second mixer performs mixing according to the second local oscillator signal, thereby realizing the transmission of the second component carrier.

Since the local oscillator signal is selectively provided by the first local oscillator 503 and the second local oscillator 504, the output of the first local oscillator 503 can be selectively enabled according to the requirements of the effective time of the first local oscillator signal during carrier switching. The first local oscillator signal or the second local oscillator 504 is selectively enabled to output the second local oscillator signal according to the requirements of the effective time of the second local oscillator signal, thereby shortening the interruption time. Taking the first time period earlier than the second time period (ie switching from the first component carrier to the second component carrier) as an example, in the first time period, the first local oscillator 503 outputs the first local oscillator signal; While the local oscillator 503 provides the first local oscillator signal for the first mixer and the second mixer (that is, while transmitting the first component carrier), the second local oscillator 504 can be selectively activated in advance, but the The output of the second local oscillator 504 is provided to the second mixer; after the transmission of the first component carrier is completed, the second local oscillator 504 can be selectively enabled (that is, the output of the second local oscillator 504 is provided to the second mixer). Frequency converter), at this time, the second local oscillator 504 can reach a stable state in a short time, and output a stable second local oscillator signal, so as to send data on the second component carrier in the second time period. That is to say, the interval between the first time period and the second time period is short, so the service interruption time during carrier switching is short, thereby reducing the impact of carrier switching on uplink data throughput and downlink feedback delay.

Referring to FIG. 9, another wireless communication device provided by an embodiment of this application. The wireless communication device 900 includes multiple transmission channels. The first transmission channel 901 of the multiple transmission channels is used to transmit data on a first component carrier in a first time period, and is also used to transmit data to a second member carrier in a second time period. Data is sent on the carrier; the second transmission channel 902 of the multiple transmission channels is used to send data on the first component carrier in the first time period, and is also used to send data on the second component carrier in the second time period.

The first local oscillator 903 is used to selectively provide the first local oscillator signal for the first mixer in the first transmission channel 901 and the second mixer in the second transmission channel 902 in the first time period.

The second local oscillator 904 is used to selectively provide a second local oscillator signal for the first mixer and the second mixer in the second time period.

Among them, the multiple transmitting channels, the first local oscillator 903 and the second local oscillator 904 may be integrated in the first integrated circuit chip, for example, may be integrated in the RFIC.

It is not difficult to see that in the wireless communication device 900, the first component carrier is transmitted using multiple antennas (dual antennas), and the second component carrier is transmitted using multiple antennas (dual antennas). That is, in the first time period, the first component carrier is transmitted on the first transmission channel 901 and the second transmission channel 902; in the second time period, the second component carrier is transmitted on the first transmission channel 901 and the second transmission channel 902 send. In other words, the wireless communication device 900 shown in FIG. 9 is suitable for carrier switching in the third scenario described above. In this scenario, both the first transmission channel 901 and the second transmission channel 902 are time division multiplexed. Among them, the first time period may be later than the second time period or may be earlier than the second time period.

It should be noted that the foregoing four descriptions about the wireless communication device 500 are also applicable to the wireless communication device 900, and will not be repeated here.

Specifically, the first local oscillator 903 and the second local oscillator 904 selectively provide the first local oscillator signal and the second local oscillator signal in the following manner: the first local oscillator 903 is mixed with the first local oscillator through the first switch unit The second local oscillator 904 is coupled to the second mixer through the third switch unit, and is coupled to the first mixer through the fourth switch unit; in the first During the time period, the first switch unit and the second switch unit are in the closed state, and the third switch unit and the fourth switch unit are in the open state; in the second time period, the first switch unit and the second switch unit are in the open state State, the third switch unit and the fourth switch unit are in a closed state. Specifically, the wireless communication device 900 may be as shown in FIG. 10.

In the first time period, the first transmission channel 901 and the second transmission channel 902 transmit data on the first component carrier. At this time, the first switch unit and the second switch unit can be closed, and the third switch unit and the fourth switch unit can be closed. The switch unit is disconnected, so the first local oscillator 903 is coupled with the first mixer and the second mixer. The first local oscillator signal output by the first local oscillator 903 can be provided to the first mixer and the second mixer. At the same time, because the third switch unit and the fourth switch unit are disconnected, the second local oscillator signal is not provided to the first mixer and the second mixer, and the second local oscillator signal will not affect the first The transmission of the first component carrier on the transmission channel 901 and the second transmission channel 902 has an impact.

In the second time period, the first transmission channel 901 and the second transmission channel 902 send data on the second component carrier. At this time, the first switch unit and the second switch unit can be disconnected, and the third switch unit and the second switch unit can be disconnected. The four-switch unit is closed, so the second local oscillator 904 is coupled with the first mixer and the second mixer, and the second local oscillator signal output by the second local oscillator 904 can be provided to the first mixer and the second mixer At the same time, because the first switch unit and the second switch unit are disconnected, the first local oscillator signal is not provided to the first mixer and the second mixer, and the first local oscillator signal will not be transmitted to the first The transmission of the second component carrier on the channel 901 and the second transmission channel 902 has an impact.

In addition, the wireless communication device 900 may further include a controller, which can control the on-off of the first switch unit, the second switch unit, the third switch unit, and the fourth switch unit according to service requirements.

1. The first time period is later than the second time period.

Specifically, when the first time period is later than the second time period, the controller is used to control the third switching unit and the fourth switching unit to change from the closed state to the open state at the end of the second time period, and control The first switch unit and the second switch unit change from the open state to the closed state at the beginning of the first time period.

The first time period is later than the second time period, that is, switching from the second component carrier to the first component carrier. In this case, at the end of the second time period, the second component carrier has been transmitted, so at this time the controller can control the third switch unit and the fourth switch unit from the closed state to the open state, and stop the second component carrier. Component carrier transmission; the first component carrier needs to be sent at the beginning of the first time period, so at this time the controller can control the first switching unit and the second switching unit from the open state to the closed state to start the first member Carrier transmission.

Further, the controller may also send a first control signal to the first local oscillator 903 before the end of the second time period arrives. The first control signal is used to instruct the first local oscillator 903 to configure the first working parameter, The working parameters are applicable to the first component carrier.

Specifically, the first working parameter may be used to configure the frequency of the local oscillator signal output by the first local oscillator 903. Because in the time period before the arrival of the first time period, the first local oscillator 903 may be used to provide a local oscillator signal with a frequency different from that of the first local oscillator signal. Therefore, before switching to the first component carrier, the first local oscillator 903 The working parameters of the vibration 903 are configured.

Regarding the above-mentioned timing of configuring the first operating parameter, it can be understood as follows: in the case of switching from the second component carrier to the first component carrier, since the first operating parameter is configured to the first local oscillator 903, the first local oscillator 903 It takes a certain time (130us～140us) to output the first local oscillator signal stably. Therefore, in this application, the first local oscillator 903 can be activated in advance during the transmission of the second component carrier, that is, at the end of the second time period Before starting, configure the first working parameters of the first local oscillator 903 so that the first local oscillator 903 can be started in advance. Therefore, at the end of the second time period, the first local oscillator 903 has been configured with the first working parameters, and the first local oscillator 903 does not need to wait for 130us to 140us to reach stability, thereby shortening the second time period and the first time period Interruption time between. Exemplarily, using the solution provided in this application, the interruption time between the second time period and the first time period may be 0 us to tens of us.

The effective time of the first working parameter can be configured as follows: the first working parameter is configured to take effect at the first moment, and the time difference between the first moment and the start moment of the first time period is greater than or equal to the stabilization time of the first local oscillator. With this configuration, the first local oscillator 903 can stably output the first local oscillator signal at the beginning of the first time period.

In addition, the controller in the wireless communication device 900 can also configure the parameters of other devices in the first transmission channel 901 and the second transmission channel 902 before the arrival of the first time period, for example, by sending a control signal to the parameters of these devices. Perform configuration and set the effective time of the configuration to be a few us or tens of us before the start of the first time period (that is, the stabilization time of other devices). After this time of several us or tens of us, all other devices A stable state is reached. Specifically, the parameters of the devices in the TXDFE, RFAFE, RFFE, and antenna switches in the first transmission channel 901 and the second transmission channel 902 can be configured.

2. The first time period is earlier than the second time period.

Specifically, when the first time period is earlier than the second time period, the controller is used to control the first switching unit and the second switching unit to change from the closed state to the open state at the end of the first time period, and control The third switch unit and the fourth switch unit change from the open state to the closed state at the beginning of the second time period.

The first time period is earlier than the second time period, that is, switching from the first component carrier to the second component carrier. In this case, the first component carrier has been transmitted at the end of the first time period, so at this time the controller can control the first switching unit and the second switching unit to change from the closed state at the end of the first time period. In the disconnected state, the transmission of the first component carrier is stopped; at the beginning of the second time period, the second component carrier needs to be transmitted, so at this time the controller can control the third switch unit and the fourth switch unit to change from the disconnected state. In the closed state, the transmission of the second component carrier is started.

Further, the controller may also send a second control signal to the second local oscillator 904 before the end of the first time period arrives. The second control signal is used to instruct the second local oscillator 904 to configure the second working parameters. The working parameters are applicable to the second component carrier.

Specifically, the second operating parameter may be used to configure the frequency of the local oscillator signal output by the second local oscillator 904. Since the second local oscillator 904 may be used to provide a local oscillator signal with a frequency different from that of the second local oscillator signal in the time period before the arrival of the second time period, the second local oscillator signal needs to be checked before switching to the second component carrier. The operating parameters of the vibration 904 are configured.

Regarding the above-mentioned timing of configuring the second operating parameter, it can be understood as follows: in the case of switching from the first component carrier to the second component carrier, since the second operating parameter is configured to the second local oscillator 904, the second local oscillator 904 It takes a certain time (130us～140us) to output the second local oscillator signal stably. Therefore, in this application, the second local oscillator 904 can be activated in advance during the transmission of the first component carrier, that is, at the end of the first time period Before starting, configure the second working parameters of the second local oscillator 904 so that the second local oscillator 904 can be started in advance. Therefore, at the end of the first time period, the second local oscillator 904 has been configured with the second working parameters, and the second local oscillator 904 does not need to wait for 130us to 140us to reach stability, thereby shortening the first time period and the second time period Interruption time between. Exemplarily, using the solution provided in this application, the interruption time between the first time period and the second time period may be 0 us to tens of us.

The effective time of the second working parameter can be configured as follows: the second working parameter is configured to take effect at the second time, and the time difference between the second time and the start time of the second time period is greater than or equal to the stabilization time of the second local oscillator. With this configuration, the second local oscillator 904 can stably output the second local oscillator signal at the beginning of the second time period.

In addition, the controller in the wireless communication device 900 can also configure the parameters of other devices in the second transmission channel 902 before the second time period arrives, for example, by sending control signals to configure the parameters of these devices, and set The time for the configuration to take effect is several us or tens of us before the start of the second time period (that is, the stabilization time of other devices), and after the time of several us or tens of us, other devices reach a stable state. Specifically, the parameters of the devices in the TXDFE, RFAFE, RFFE, and antenna switch in the second transmission channel 902 can be configured.

It should be understood that, similar to the wireless communication device 500, in the wireless communication device 900, the first local oscillator 903 and the second local oscillator 904 can be kept in a normally on state, or they can be output according to the uplink and downlink ratio format configured by the base station. When the vibration signal is turned on at least 130us to 140us in advance, it will not be repeated here. In addition, for the specific form of the controller in the wireless communication device 900, reference may be made to the relevant description in the wireless communication device 500, which will not be repeated here.

In addition, the selective provision of the first local oscillator signal and the second local oscillator signal by the first local oscillator 903 and the second local oscillator 904 can also be achieved in the following manner: the third local oscillator and the fourth local oscillator pass the single-pole multi-throw switch 1 Coupled with the first mixer, the fifth local oscillator and the sixth local oscillator are coupled with the second mixer through the single-pole multi-throw switch 2. Among them, the third local oscillator and the fifth local oscillator output the first local oscillator signal, and the fourth local oscillator and the sixth local oscillator output the second local oscillator signal.

In the first time period, SPDT switch 1 gated the third local oscillator, SPDT switch 2 gated the fifth local oscillator, and the third local oscillator and the fifth local oscillator were sent to the first mixer and the second local oscillator respectively. The mixer provides the first local oscillator signal. In the second time period, SPDT switch 1 gates the fourth local oscillator, SPDT switch 2 gates the sixth local oscillator, and the fourth local oscillator and the sixth local oscillator are directed to the first mixer and the second The mixer provides the second local oscillator signal.

With the wireless communication device 900, it is possible to quickly switch between the first component carrier and the second component carrier. Among them, the first component carrier multi-antenna (dual antenna) transmission, and the second component carrier multi-antenna (dual antenna) transmission. In practical applications, the first component carrier and the second component carrier may be component carriers in different networking modes. Several specific examples of the first component carrier and the second component carrier are given below. Specifically, when the SA method is adopted, the first component carrier can be transmitted with dual antennas on NR UL, and the second component carrier can be transmitted with dual antennas on NR UL. In this case, the wireless communication device 900 can be used for the first component carrier and Fast handover between second component carriers.

Specifically, the first component carrier may be a carrier transmitted by dual antennas on NR UL, and the second component carrier may be a carrier transmitted by dual antennas on LTE UL. Applied to the foregoing scenario 3, when the NSA method is adopted and there is no SUL, the base station allows the terminal SUO, the first component carrier can be transmitted with dual antennas on NR UL, and the second component carrier can be transmitted with dual antennas on LTE UL. In this case The wireless communication device 900 may be used to perform fast switching between the first component carrier and the second component carrier. Or, applied to the foregoing scenario 3, when the NSA method is used and SUL is available, the base station allows the terminal SUO. At this time, the terminal does not send SUL. The first component carrier can be transmitted on NR UL using dual antennas, and the second component carrier can be transmitted on LTE Dual-antenna transmission is used on the UL. In this case, the wireless communication device 900 can be used to quickly switch between the first component carrier and the second component carrier.

In addition, the first component carrier may be a carrier transmitted by dual antennas on NR UL, and the second component carrier may be a carrier transmitted by dual antennas on NR UL; or, the first component carrier may be a carrier transmitted by dual antennas on LTE UL. The second component carrier may be a carrier transmitted by dual antennas on LTE UL. Among them, the first component carrier and the second component carrier are used for DC networking belonging to the same RAT.

It should be noted that the wireless communication device 900 shown in FIG. 9 is also applicable to the foregoing scenario 1. For example, the second switch unit and the fourth switch unit can be kept disconnected all the time, the first component carrier is transmitted with a single antenna on the first transmission channel, and the second component carrier is transmitted with a single antenna on the second transmission channel. In this case, 0us seamless switching can be realized for the first component carrier and the second component carrier.

Illustratively, FIG. 11 shows a schematic structural diagram of a wireless communication device provided by an embodiment of the present application. The wireless communication device can be regarded as a specific example of the wireless communication device 900.

After the baseband processor performs signal processing, the baseband signal is sent to the serializer/deserializer (Serdes) and then divided into two transmission channels. Each transmitting channel contains TXDFE, system clock, DAC, filter, mixer, PA, and then the radio frequency signal is selected by ASM and sent out through ANT. In addition, the wireless communication device also includes two phase-locked loops (PLL0 and PLL1) to provide local oscillator signals for the mixer. Among them, PLL0 is connected to TX0 and TX1 and is gated through switches K0 and K1; PLL1 is connected to TX0 and TX1 and is gated through switches K2 and K3. CC2 is configured in PLL0; CC1 is configured in PLL1.

Specifically, the 1T of CC1 can be configured on the TX0 channel, and the other 1T can be configured on the TX1 channel; the 1T of CC2 can be configured on the TX0 channel, and the other 1T can be configured on the TX1 channel. That is, CC1 realizes dual-antenna transmission through TX1 and TX2, and CC2 realizes dual-antenna transmission through TX0 and TX1.

When switching from CC2 to CC1, PLL1 can be started early. TX0 and TX1 still send the remaining data of CC2; after PLL1 130us ~ 140us is stable, the remaining data of CC2 is sent, open switches K0 and K1, at this time, you can close PLL0, close switches K2 and K3, and adjust TX0 and TX1 to The transmit power of CC1, TX0 and TX1 transmit the uplink service data of CC1.

When switching from CC1 to CC2, PLL0 can be started early. After CC1 sends the data of TX0 and TX1, open switches K2 and K3, and PLL1 can be closed at this time; at the same time, close switches K0 and K1, adjust TX0 and TX1 to the transmission power of CC2, TX0 and TX1 send CC2's uplink business Channel data.

In addition, the wireless communication device shown in FIG. 11 may also support CC1 single antenna transmission and CC2 single antenna transmission. For example, switches K1 and K3 are open, switches K0 and K2 are closed, CC1 is sent through TX1, and CC2 is sent through TX0. Since the two channels of CC1 and CC2 do not affect each other, CC1 and CC2 can achieve 0us seamless switching.

In summary, using the wireless communication device 900, since the first component carrier is transmitted through the first transmission channel 901 and the second transmission channel 902 in the first time period, the first local oscillator 903 is selectively used in the first time period. The first mixer and the second mixer provide the first local oscillator signal, and the first mixer and the second mixer can be mixed according to the first local oscillator signal, so as to realize the transmission of the first component carrier; In particular, since the second component carrier is transmitted through the first transmission channel 901 and the second transmission channel 902 in the second time period, the second local oscillator 904 is selectively used as the first mixer and the second transmitter in the second time period. The second mixer provides the second local oscillator signal, so that the first mixer and the second mixer can mix according to the second local oscillator signal, thereby realizing the transmission of the first component carrier.

Since the local oscillator signal is selectively provided by the first local oscillator 903 and the second local oscillator 904, the output of the first local oscillator 903 can be selectively enabled according to the requirements of the effective time of the first local oscillator signal during carrier switching. The first local oscillator signal or the second local oscillator 904 is selectively enabled to output the second local oscillator signal according to the requirements of the effective time of the second local oscillator signal, thereby shortening the interruption time. Taking the first time period earlier than the second time period (ie switching from the first component carrier to the second component carrier) as an example, in the first time period, the first local oscillator 903 outputs the first local oscillator signal; While the local oscillator 903 provides the first local oscillator signal for the first mixer and the second mixer (that is, while transmitting the first component carrier), the second local oscillator 904 can be selectively activated in advance, but the The output of the second local oscillator 904 is provided to the second mixer; after the transmission of the first component carrier is completed, the second local oscillator 904 can be selectively enabled (that is, the output of the second local oscillator 904 is provided to the second mixer). Frequency converter). At this time, since the second local oscillator 904 has been activated in advance, it only takes a short time to reach a stable state, and output the second local oscillator signal stably, so as to be on the second component carrier in the second time period. send data. Since the interval between the first time period and the second time period is short, the service interruption time during carrier switching is short, thereby reducing the influence of carrier switching on uplink data throughput and downlink feedback delay.

Based on the same inventive concept, the embodiment of the present application also provides a carrier switching method. By adopting this carrier switching method, the wireless communication device 500 can realize rapid carrier switching. That is, the carrier switching method is applied to a wireless communication device, and the wireless communication device includes: a plurality of transmission channels, the first transmission channel of the plurality of transmission channels is used to transmit data on the first component carrier in the first time period, and The second transmission channel of the two transmission channels is used to send data on the first component carrier in the first time period and to send data on the second component carrier in the second time period; the first local oscillator is used to output the first component carrier. Local oscillator signal; the second local oscillator, used to output the second local oscillator signal.

Referring to FIG. 12, the carrier switching method includes the following steps.

S1201: Enable the first local oscillator to provide the first local oscillator signal for the first mixer in the first transmission channel and the second mixer in the second transmission channel in the first time period.

S1202: Enable the second local oscillator to provide the second local oscillator signal for the second mixer in the second time period.

Specifically, the first local oscillator can be coupled with the first mixer through the first switch unit, and coupled with the second mixer through the second switch unit; the second local oscillator can be coupled with the second mixer through the third switch unit. Then, the method shown in FIG. 12 specifically includes: in the first time period, controlling the first switching unit and the second switching unit to be in the closed state, and the third switching unit to be in the off state; in the second time period, controlling The first switch unit and the second switch unit are in an open state, and the third switch unit is in a closed state.

In addition, the method shown in FIG. 12 further includes: when the first time period is later than the second time period, controlling the third switch unit to change from the closed state to the open state at the end of the second time period, and controlling the second time period A switch unit and a second switch unit change from an open state to a closed state at the beginning of the first time period; and, when the first time period is earlier than the second time period, control the first switch unit and the second switch unit The switching unit changes from the closed state to the open state at the end of the first time period, and controls the third switch unit to change from the open state to the closed state at the beginning of the second time period.

With the above solution, the first component carrier can be switched to the second component carrier, or the second component carrier can be switched to the first component carrier through the switching of the first switch unit, the second switch unit, and the third switch unit.

In addition, the method shown in FIG. 12 further includes: when the first time period is later than the second time period, before the end of the second time period arrives, controlling the first local oscillator to configure the first working parameter, and the first The working parameters are applicable to the first component carrier; if the first time period is earlier than the second time period, before the end of the first time period arrives, the second local oscillator is controlled to configure the second working parameter, the second working parameter Applies to the second component carrier.

In the case of switching from the second component carrier to the first component carrier, since the first operating parameter is configured to the first local oscillator, the first local oscillator needs a certain time (130us ~ 140us) to stably output the first local oscillator signal Therefore, the first local oscillator can be started in advance in the transmission process of the second component carrier, that is, the first working parameter of the first local oscillator can be configured before the end of the second time period. Therefore, at the end of the second time period, the first local oscillator has been configured with the first working parameters, and the first local oscillator does not need to wait for 130us to 140us to reach stability, thereby shortening the time between the second time period and the first time period The interruption time.

In the case of switching from the first component carrier to the second component carrier, since the second operating parameter is configured to the second local oscillator, the second local oscillator needs a certain time (130us ~ 140us) to stably output the second local oscillator signal Therefore, the second local oscillator can be started in advance during the transmission process of the first component carrier, that is, the second working parameter of the second local oscillator can be configured before the end of the first time period. Therefore, at the end of the first time period, the second local oscillator has been configured with the second operating parameters, and the second local oscillator does not need to wait for 130us to 140us to reach stability, thereby shortening the time between the first time period and the second time period The interruption time.

Specifically, the method shown in FIG. 12 may be implemented by a controller in the wireless communication device 500. For implementations that are not described in detail in the method shown in FIG. 12, reference may be made to related descriptions in the wireless communication device 500.

Based on the same inventive concept, the embodiment of the present application also provides a carrier switching method. By adopting this carrier switching method, the wireless communication device 900 can realize rapid carrier switching. That is, the carrier switching method is applied to a wireless communication device, the wireless communication device includes: a plurality of transmission channels, the first transmission channel of the plurality of transmission channels is used to send data on the first component carrier in the first time period, And send data on the second component carrier in the second time period; the second transmission channel of the plurality of transmission channels is used to send data on the first component carrier in the first time period, and in the second time period Data is sent on the component carrier; the first local oscillator is used to output the first local oscillator signal; the second local oscillator is used to output the second local oscillator signal.

Referring to FIG. 13, the carrier switching method includes the following steps.

S1301: Enable the first local oscillator to provide the first local oscillator signal for the first mixer in the first transmission channel and the second mixer in the second transmission channel in the first time period.

S1302: Enable the second local oscillator to provide the second local oscillator signal for the first mixer and the second mixer in the second time period.

Specifically, the first local oscillator can be coupled with the first mixer through the first switch unit, and coupled with the second mixer through the second switch unit; the second local oscillator can be coupled with the second mixer through the third switch unit. Coupling and coupling with the first mixer through the fourth switch unit. Then, the method shown in FIG. 13 specifically includes: in the first time period, controlling the first switching unit and the second switching unit to be in the closed state, and the third switching unit and the fourth switching unit to be in the off state; in the second time period Inside, the first switch unit and the second switch unit are controlled to be in an off state, and the third switch unit and the fourth switch unit are in a closed state.

In addition, the method shown in FIG. 13 further includes: when the first time period is later than the second time period, controlling the third switch unit and the fourth switch unit to change from the closed state to the open state at the end of the second time period Control the first switch unit and the second switch unit to change from the open state to the closed state at the beginning of the first time period; and, when the first time period is earlier than the second time period, control the first switch The unit and the second switch unit change from the closed state to the open state at the end of the first time period, and control the third switch unit and the fourth switch unit to change from the open state to the closed state at the beginning of the second time period.

With the above solution, the first component carrier can be switched to the second component carrier, or the second component carrier can be switched to the first component carrier through the switching of the first switch unit, the second switch unit, the third switch unit, and the fourth switch unit. Component carrier switching.

In addition, the method shown in FIG. 13 further includes: when the first time period is later than the second time period, before the end of the second time period arrives, controlling the first local oscillator to configure the first working parameter, and the first The working parameters are applicable to the first component carrier; if the first time period is earlier than the second time period, before the end of the first time period arrives, the second local oscillator is controlled to configure the second working parameter, the second working parameter Applies to the second component carrier.

In the case of switching from the first component carrier to the second component carrier, since the second operating parameter is configured to the second local oscillator, the second local oscillator needs a certain time (130us ~ 140us) to stably output the second local oscillator signal Therefore, the second local oscillator can be started in advance during the transmission process of the first component carrier, that is, the second working parameter of the second local oscillator can be configured before the end of the first time period. Therefore, at the end of the first time period, the second local oscillator has been configured with the second working parameters, and the second local oscillator does not need to wait for 130us to 140us to reach stability, thereby shortening the time between the first time period and the second time period The interruption time.

Specifically, the method shown in FIG. 13 may be implemented by a controller in the wireless communication device 900, and for implementations that are not described in detail in the method shown in FIG. 13, reference may be made to related descriptions in the wireless communication device 900.

Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the scope of the embodiments of the present application. In this way, if these modifications and variations of the embodiments of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these modifications and variations.

Claims

A wireless communication device, characterized in that it comprises:

A plurality of transmission channels, a first transmission channel of the plurality of transmission channels is used to transmit data on a first component carrier in a first time period, and a second transmission channel of the plurality of transmission channels is used for the Sending data on the first component carrier in the first time period, and sending data on the second component carrier in the second time period;

The first local oscillator is used to selectively provide a first local oscillator for the first mixer in the first transmission channel and the second mixer in the second transmission channel during the first time period. Vibration signal

The second local oscillator is used to selectively provide a second local oscillator signal for the second mixer in the second time period.
8. The device of claim 1, wherein the first local oscillator is coupled to the first mixer through a first switch unit, and is coupled to the second mixer through a second switch unit; The second local oscillator is coupled to the second mixer through a third switch unit; in the first time period, the first switch unit and the second switch unit are in a closed state, and the third The switch unit is in an open state; in the second time period, the first switch unit and the second switch unit are in an open state, and the third switch unit is in a closed state.
The device of claim 2, further comprising:

A controller, configured to control the third switch unit to change from a closed state to an open state at the end of the second time period when the first time period is later than the second time period, Control the first switch unit and the second switch unit to change from the open state to the closed state at the beginning of the first time period; and, the first time period is earlier than the second time period In the case of controlling the first switching unit and the second switching unit to change from the closed state to the open state at the end of the first time period, and controlling the third switching unit to operate at the second time The beginning of the segment changes from the open state to the closed state.
5. The device of claim 3, wherein the controller is further configured to:

In the case that the first time period is later than the second time period, before the end of the second time period arrives, the first control signal is sent to the first local oscillator, and the first control The signal is used to instruct the first local oscillator to configure a first working parameter, where the first working parameter is applicable to the first component carrier;

In the case that the first time period is earlier than the second time period, before the end of the first time period arrives, a second control signal is sent to the second local oscillator, and the second control The signal is used to instruct the second local oscillator to configure a second working parameter, and the second working parameter is applicable to the second component carrier.
The device of claim 4, wherein the controller is further configured to:

In the case that the first time period is later than the second time period, the configuration of the first working parameter takes effect at the first time, and the time difference between the first time and the start time of the first time period is greater than Or equal to the stabilization time of the first local oscillator;

In the case that the first time period is earlier than the second time period, the second working parameter is configured to take effect at a second time, and the time difference between the second time and the start time of the second time period is greater than Or equal to the stabilization time of the second local oscillator.
The apparatus according to any one of claims 1 to 5, wherein the first component carrier is a carrier for dual-antenna transmission on a new air interface uplink NR UL, and the second component carrier is a long-term evolution uplink A carrier transmitted by a single antenna on LTE UL.
The apparatus according to any one of claims 1 to 5, wherein the first component carrier is a carrier transmitted by dual antennas on LTE UL, and the second component carrier is a carrier transmitted by single antenna on NR UL.
The apparatus according to claim 6 or 7, wherein the first component carrier and the second component carrier are used for non-independent deployment of NSA networking.
The apparatus according to any one of claims 1 to 5, wherein the first component carrier is a carrier transmitted by two antennas on NR UL, and the second component carrier is a carrier transmitted by a single antenna on SUL.
The apparatus according to claim 9, wherein the first component carrier and the second component carrier are used for an NR node of an NSA network; or, the first component carrier and the second component carrier Used for independent deployment of SA networking.
The apparatus according to any one of claims 1 to 5, wherein the first component carrier is a carrier transmitted by dual antennas on NR UL, and the second component carrier is a carrier transmitted by single antenna on NR UL; Alternatively, the first component carrier is a carrier transmitted by dual antennas on LTE UL, and the second component carrier is a carrier transmitted by single antenna on LTE UL.
The apparatus according to claim 11, wherein the first component carrier and the second component carrier are used in a dual-connection DC networking that belongs to the same radio access technology RAT.
The device according to any one of claims 1 to 12, wherein the multiple transmitting channels, the first local oscillator and the second local oscillator are integrated in a first integrated circuit chip.
A wireless communication device, characterized in that it comprises:

A plurality of transmission channels, a first transmission channel of the plurality of transmission channels is used to send data on a first component carrier in a first time period, and to send data on a second component carrier in a second time period; The second transmission channel of the plurality of transmission channels is used for sending data on the first component carrier in the first time period, and sending data on the second component carrier in the second time period;

The first local oscillator is used to selectively provide a first local oscillator for the first mixer in the first transmission channel and the second mixer in the second transmission channel during the first time period. Vibration signal

The second local oscillator is used to selectively provide a second local oscillator signal for the first mixer and the second mixer in the second time period.
The device of claim 14, wherein the first local oscillator is coupled to the first mixer through a first switch unit, and is coupled to the second mixer through a second switch unit; The second local oscillator is coupled to the second mixer through a third switch unit, and is coupled to the first mixer through a fourth switch unit; in the first time period, the first switch unit And the second switch unit are in the closed state, the third switch unit and the fourth switch unit are in the open state; in the second time period, the first switch unit and the second switch The unit is in an open state, and the third switch unit and the fourth switch unit are in a closed state.
The apparatus of claim 15, further comprising:

Controller: when the first time period is later than the second time period, control the third switch unit and the fourth switch unit to switch from being closed at the end of the second time period The state changes to the open state, and the first switch unit and the second switch unit are controlled to change from the open state to the closed state at the beginning of the first time period; and, early in the first time period In the case of the second time period, control the first switch unit and the second switch unit to change from the closed state to the open state at the end of the first time period, and control the third switch The unit and the fourth switch unit change from an open state to a closed state at the beginning of the second time period.
The device of claim 16, wherein the controller is further configured to:

In the case that the first time period is later than the second time period, before the end of the second time period arrives, the first control signal is sent to the first local oscillator, and the first control The signal is used to instruct the first local oscillator to configure a first working parameter, where the first working parameter is applicable to the first component carrier;

In the case that the first time period is earlier than the second time period, before the end of the first time period arrives, a second control signal is sent to the second local oscillator, and the second control The signal is used to instruct the second local oscillator to configure a second working parameter, and the second working parameter is applicable to the second component carrier.
The device of claim 17, wherein the controller is further configured to:

In the case that the first time period is later than the second time period, the configuration of the first working parameter takes effect at the first time, and the time difference between the first time and the start time of the first time period is greater than Or equal to the stabilization time of the first local oscillator;

In the case that the first time period is earlier than the second time period, the second working parameter is configured to take effect at a second time, and the time difference between the second time and the start time of the second time period is greater than Or equal to the stabilization time of the second local oscillator.
The apparatus according to any one of claims 14 to 18, wherein the first component carrier is a carrier transmitted by dual antennas on NR UL, and the second component carrier is a carrier transmitted by dual antennas on LTE UL.
The apparatus according to claim 19, wherein the first component carrier and the second component carrier are used for non-independent deployment of NSA networking.
The apparatus according to any one of claims 14 to 18, wherein the first component carrier is a carrier transmitted by two antennas on NR UL, and the second component carrier is a carrier transmitted by two antennas on NR UL; Alternatively, the first component carrier is a carrier transmitted by dual antennas on LTE UL, and the second component carrier is a carrier transmitted by dual antennas on LTE UL.
The apparatus according to claim 21, wherein the first component carrier and the second component carrier are used for DC networking belonging to the same RAT.
The device according to any one of claims 14 to 22, wherein the first mixer, the second mixer, the first local oscillator circuit and the second local oscillator circuit are integrated In the first integrated circuit chip.
A carrier switching method, characterized in that the method is applied to a wireless communication device, the wireless communication device includes: a plurality of transmission channels, and a first transmission channel of the plurality of transmission channels is used for a first time Data is sent on the first component carrier in the first time period, and the second transmission channel of the plurality of transmission channels is used to send data on the first component carrier in the first time period, and in the second time period Two component carriers send data; the first local oscillator is used to output the first local oscillator signal; the second local oscillator is used to output the second local oscillator signal;

The method includes:

The first local oscillator is enabled to provide the first mixer in the first transmission channel and the second mixer in the second transmission channel within the first time period. Vibration signal

The second local oscillator is enabled to provide the second local oscillator signal for the second mixer in the second time period.
The method of claim 24, wherein the first local oscillator is coupled to the first mixer through a first switch unit, and is coupled to the second mixer through a second switch unit; The second local oscillator is coupled to the second mixer through a third switch unit;

The method specifically includes:

In the first time period, control the first switch unit and the second switch unit to be in the closed state, and the third switch unit to be in the open state; in the second time period, control the The first switch unit and the second switch unit are in an open state, and the third switch unit is in a closed state.
The method of claim 25, further comprising:

In the case that the first time period is later than the second time period, control the third switch unit to change from a closed state to an open state at the end of the second time period, and control the first The switch unit and the second switch unit change from the open state to the closed state at the beginning of the first time period; and, in the case where the first time period is earlier than the second time period, control The first switch unit and the second switch unit change from the closed state to the open state at the end of the first time period, and control the third switch unit to change from the on state at the beginning of the second time period The open state changes to the closed state.
The method according to claim 25 or 26, further comprising:

In the case that the first time period is later than the second time period, before the end of the second time period arrives, the first local oscillator is controlled to configure the first working parameter, and the first working Parameters are applicable to the first component carrier;

In the case that the first time period is earlier than the second time period, before the end of the first time period arrives, the second local oscillator is controlled to configure a second working parameter, and the second working time The parameter is applicable to the second component carrier.
The method of claim 27, further comprising:

In the case that the first time period is later than the second time period, the configuration of the first working parameter takes effect at the first time, and the time difference between the first time and the start time of the first time period is greater than Or equal to the stabilization time of the first local oscillator;

In the case that the first time period is earlier than the second time period, the second working parameter is configured to take effect at a second time, and the time difference between the second time and the start time of the second time period is greater than Or equal to the stabilization time of the second local oscillator.
A carrier switching method, characterized in that the method is applied to a wireless communication device, the wireless communication device includes: a plurality of transmission channels, and a first transmission channel of the plurality of transmission channels is used for a first time Data is sent on the first component carrier in the first time period, and data is sent on the second component carrier in the second time period; the second transmission channel of the plurality of transmission channels is used to transmit data on the second component carrier in the first time period. Send data on a component carrier and send data on a second component carrier in a second time period; a first local oscillator for outputting a first local oscillator signal; a second local oscillator for outputting a second local oscillator signal;

The method includes:

The first local oscillator is enabled to provide the first mixer in the first transmission channel and the second mixer in the second transmission channel within the first time period. Vibration signal

The second local oscillator is enabled to provide the second local oscillator signal to the first mixer and the second mixer in the second time period.
The method of claim 29, wherein the first local oscillator is coupled with the first mixer through a first switch unit, and is coupled with the second mixer through a second switch unit; The second local oscillator is coupled with the second mixer through a third switch unit, and is coupled with the first mixer through the fourth switch unit;

The method specifically includes:

In the first time period, control the first switch unit and the second switch unit to be in the closed state, and the third switch unit and the fourth switch unit to be in the open state; in the second During the time period, the first switch unit and the second switch unit are controlled to be in an off state, and the third switch unit and the fourth switch unit are in a closed state.
The method of claim 30, further comprising:

In the case that the first time period is later than the second time period, control the third switch unit and the fourth switch unit to change from the closed state to the open state at the end of the second time period State, controlling the first switching unit and the second switching unit to change from the open state to the closed state at the beginning of the first time period; and, the first time period is earlier than the second In the case of a time period, control the first switch unit and the second switch unit to change from the closed state to the open state at the end of the first time period, and control the third switch unit and the first switch unit The four-switch unit changes from the open state to the closed state at the beginning of the second time period.
The method according to claim 30 or 31, further comprising:

In the case that the first time period is later than the second time period, before the end of the second time period arrives, the first local oscillator is controlled to configure the first working parameter, and the first working Parameters are applicable to the first component carrier;

In the case that the first time period is earlier than the second time period, before the end of the first time period arrives, the second local oscillator is controlled to configure a second working parameter, and the second working time The parameter is applicable to the second component carrier.
The method of claim 32, further comprising:

In the case that the first time period is later than the second time period, the configuration of the first working parameter takes effect at the first time, and the time difference between the first time and the start time of the first time period is greater than Or equal to the stabilization time of the first local oscillator;

In the case that the first time period is earlier than the second time period, the second working parameter is configured to take effect at a second time, and the time difference between the second time and the start time of the second time period is greater than Or equal to the stabilization time of the second local oscillator.