WO2022007930A1

WO2022007930A1 - Carrier handover processing method and apparatus, and terminal

Info

Publication number: WO2022007930A1
Application number: PCT/CN2021/105407
Authority: WO
Inventors: 施源; 孙晓东
Original assignee: 维沃移动通信有限公司
Priority date: 2020-07-10
Filing date: 2021-07-09
Publication date: 2022-01-13
Also published as: CN113922933A; CN113922933B

Abstract

The present application relates to the technical field of communications. Disclosed are a carrier handover processing method and apparatus, and a terminal. The method is applied to the terminal, and comprises: handing over from a source carrier to a target carrier according to carrier handover information; and sending a sounding reference signal (SRS) on a target bandwidth part (BWP) of the target carrier, wherein the target BWP is one or more BWPs on the target carrier. The solution of the present application is used for solving the problem of how to execute a handover on a CC configured with a BWP.

Description

A carrier switching processing method, device and terminal

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese Patent Application No. 202010665083.1 filed in China on Jul. 10, 2020, the entire contents of which are incorporated herein by reference.

technical field

The present application belongs to the field of communication technologies, and specifically relates to a carrier switching processing method, device and terminal.

Background technique

The terminal equipment is limited by transmit power, hardware capacity, etc., and the number of received carriers may be larger than the number of transmitted carriers, which makes it impossible to obtain downlink channel state information (Channel State Information, CSI) of all carriers through uplink and downlink reciprocity. The current solution is to switch to the carrier position corresponding to only the downlink BWP activated through carrier switching, and send a channel sounding reference signal (Sounding Reference Signal, SRS) to obtain the downlink CSI of the current carrier.

However, in a New Radio (New Radio, NR) system, a Bandwidth Part (Bandwidth Part, BWP) is introduced. A frequency band supports up to 16 Component Carriers (CCs), and the CCs can be discontinuous but not overlapping. A maximum of 4 BWPs can be configured under each CC, and the BWPs can overlap each other and can be continuous or discontinuous. In this way, at the time of carrier switching, determining the activated uplink BWP has become an urgent problem to be solved.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present application is to provide a carrier switching processing method, device and terminal, which can solve how to determine the BWP during carrier switching.

In order to solve the above technical problems, this application is implemented as follows:

In a first aspect, the embodiments of the present application provide a carrier switching processing method, which is applied to a terminal, including:

According to the carrier switching information, the source carrier is switched to the target carrier;

on the target bandwidth part BWP of the target carrier, sending a sounding reference signal SRS;

The target BWP is one or more BWPs on the target carrier.

In a second aspect, an embodiment of the present application provides a carrier switching processing device, including:

a processing module for switching from the source carrier to the target carrier according to the carrier switching information;

a sending module, configured to send a sounding reference signal SRS on the target bandwidth part BWP of the target carrier;

The target BWP is one or more BWPs on the target carrier.

In a third aspect, an embodiment of the present application further provides a terminal, the terminal includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor, the program or instruction being When executed by the processor, the steps of the method according to the first aspect are implemented.

In a fourth aspect, an embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the method according to the first aspect is implemented. step.

In a fifth aspect, an embodiment of the present application provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction, and implement the first aspect the method described.

In this way, in the embodiment of the present application, firstly, according to the carrier switching information, the source carrier is switched to the target carrier, and then SRS is sent on one or more BWPs of the target carrier, so as to complete uplink CSI acquisition of all carriers.

Description of drawings

1 is a block diagram of a wireless communication system;

FIG. 2 is a schematic flowchart of a carrier switching processing method according to an embodiment of the present application;

3 is a schematic structural diagram of a carrier switching processing apparatus according to an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a terminal according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a terminal according to another embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

The terms "first", "second" and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that data so used may be interchanged under appropriate circumstances so that embodiments of the application can be practiced in sequences other than those illustrated or described herein. In addition, "and/or" in the description and claims indicates at least one of the connected objects, and the character "/" generally indicates that the associated objects are in an "or" relationship. For example, "A and/or B" means "A alone, B alone, and both A and B are present", and "at least one of A and B" also means "A alone, B alone, and both A and B" B exists in all three cases.

It is worth noting that the technologies described in the embodiments of this application are not limited to Long Term Evolution (LTE)/LTE-Advanced (LTE-Advanced, LTE-A) systems, and can also be used in other wireless communication systems, such as code Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (Orthogonal Frequency Division Multiple Access, OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used not only for the above-mentioned systems and radio technologies, but also for other systems and radio technologies. However, the following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the description below, although these techniques are also applicable to applications other than NR system applications, such as 6th generation ( 6 ^th Generation, 6G) communication system.

FIG. 1 shows a block diagram of a wireless communication system to which the embodiments of the present application can be applied. The wireless communication system includes a terminal 11 and a network-side device 12 . The terminal 11 may also be called a terminal device or a user terminal (User Equipment, UE), and the terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital computer Assistant (Personal Digital Assistant, PDA), PDA, netbook, ultra-mobile personal computer (UMPC), mobile Internet Device (Mobile Internet Device, MID), wearable device (Wearable Device) or vehicle-mounted device (VUE), pedestrian terminal (PUE) and other terminal-side devices, wearable devices include: bracelets, headphones, glasses, etc. It should be noted that, the embodiment of the present application does not limit the specific type of the terminal 11 . The network side device 12 may be a base station or a core network, wherein the base station may be referred to as a Node B, an evolved Node B, an access point, a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a basic service Set (Basic Service Set, BSS), Extended Service Set (Extended Service Set, ESS), Node B, Evolved Node B (eNB), Home Node B, Home Evolved Node B, WLAN Access Point, WiFi Node, Send Transmitting and Receiving Point (TRP) or some other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary. It should be noted that in the embodiments of this application, only Take the base station in the NR system as an example, but the specific type of the base station is not limited.

The carrier switching processing method provided by the embodiment of the present application will be described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

As shown in FIG. 2 , a carrier switching processing method according to an embodiment of the present application, applied to a terminal, includes:

Step 201, according to the carrier switching information, switch from the source carrier to the target carrier.

Here, the carrier switching information may be carrier switching signaling that triggers carrier switching, or may be configuration information that carries information related to carrier switching. For example, the carrier switching information may include: carrier switching condition information, carrier switching effective time information, source The carrier identifier of the carrier, the carrier identifier of the target carrier, the switching sequence of carrier switching, etc. The carrier switching information may be configured by radio resource control (Radio Resource Control, RRC) signaling, or may be indicated by downlink control information (Downlink Control Information, DCI), for example, indicated by DCI format (format) 2_3. In this step, the terminal switches from the source carrier to the target carrier according to the carrier switching information, in order to complete the acquisition of downlink CSI on the target carrier.

Step 202: Send a sounding reference signal SRS on the target bandwidth part BWP of the target carrier, where the target BWP is one or more BWPs on the target carrier.

In this step, based on the target carrier switched in step 201, one or more BWPs on the target carrier are used as target BWPs to transmit SRS to acquire downlink CSI.

In the method of this embodiment of the present application, through the

above steps

201 and 202, firstly, according to the carrier switching information, the source carrier is switched to the target carrier, and then SRS is sent on one or more BWPs of the target carrier, so as to complete the downlink of all carriers. CSI acquisition.

Certainly, the all carriers may be all the carriers that need to be switched, or may be all the carriers in the RRC configuration, which are not limited herein.

In this embodiment, the source carrier may be an initial carrier, that is, a carrier determined by a serving cell index (serving cell index) and a serving cell carrier (serving cell carrier) in high-level parameters, or a non-initial carrier. For example, for the carriers CC1, CC2 and CC3, the carriers received by the terminal include CC1, CC2 and CC3, but the transmitted carrier is only CC1. Here, CC1 can be used as a source carrier, and CC1 is switched to CC2; and CC2 can also be used as a source carrier, and CC2 is switched to CC3.

In this way, the methods of the embodiments of the present application can be applied to a scenario in which the number of carriers received by the terminal is greater than the number of carriers sent under the NR system. For example, the received carriers include CC1, CC2, CC3 and CC4, and the transmitted carrier is only CC1. At this time, taking the switching from CC1 to the target carrier CC2 according to the carrier switching information as an example, the terminal can send the SRS on the target BWP of CC2, so as to obtain CSI on the target carrier subsequently.

In this embodiment, the target carrier may be configured with one or more BWPs. When the target carrier includes one BWP, the BWP can be used as the target BWP to send the SRS, or a target BWP with a larger bandwidth can be configured to send the SRS; when the target carrier includes multiple BWPs, the SRS among the multiple BWPs can be configured One or more send SRS as target BWP. In order to completely obtain downlink CSI of all carriers, the target BWP is the UL (Uplink) BWP on the target carrier. Therefore, on the target carrier, there may be only one UL BWP as the target BWP, or there may be multiple UL BWPs as the target BWP. Of course, the multiple UL BWPs may be part or all of the UL BWPs on the target carrier.

In addition to randomly selecting the target BWP on the target carrier and using all UL BWPs as the target BWP, optionally, in this embodiment, the target BWP includes at least one of the following:

the first uplink UL BWP at a preset position on the target carrier;

The second UL BWP on the target carrier, the ID of the second UL BWP is the same as the ID of the downlink DL BWP activated on the target carrier;

the third UL BWP with the largest bandwidth on the target carrier;

a fourth UL BWP on the target carrier, where the fourth UL BWP is the UL BWP with the smallest bandwidth among the UL BWPs that can cover the DL BWP activated on the target carrier;

the fifth UL BWP on the target carrier, the fifth UL BWP is indicated by the UL BWP ID activated on the source carrier;

The sixth UL BWP on the target carrier, the sixth UL BWP is indicated by a preset signaling or a configured UL BWP ID.

The preset position is a predefined, configured or indicated specific position of the BWP configured on the target carrier. For example, the preset location may be the location of the first UL BWP, the location of the second UL BWP, and the location of the last UL BWP on the target carrier. Thus, if the target BWP is the first UL BWP, then the first UL BWP is at least one of the first UL BWP, the second UL BWP, and the last UL BWP on the target carrier.

If the target BWP is the second UL BWP, the target BWP is the UL BWP on the target carrier whose own ID is the same as the ID of the DL BWP activated on the target carrier. It can also be said that the ID of the target BWP follows the ID of the DL BWP activated on the target carrier. At this time, the center carrier frequency of the target BWP can also follow the center carrier frequency of the activated DL BWP.

If the target BWP is the third UL BWP, the target BWP is the UL BWP on the target carrier with a bandwidth greater than or equal to other UL BWPs. It can also be said that the ID of the target BWP uses the ID of the UL BWP with the largest bandwidth on the target carrier.

If the target BWP is the fourth UL BWP, the target BWP is required not only to cover the DL BWP activated on the target carrier, but also a UL BWP on the target carrier with a bandwidth smaller than other UL BWPs.

If the target BWP is the fifth UL BWP, the target BWP is the UL BWP indicated by the UL BWP ID activated on the source carrier on the target carrier. It can also be said that the ID of the target BWP follows the ID of the activated UL BWP on the source carrier.

If the target BWP is the sixth UL BWP, the target BWP may also be the UL BWP indicated by the preset signaling or the configured UL BWP ID on the target carrier. It can also be said that the ID of the target BWP is indicated or configured by preset signaling. At this time, the preset signaling can indicate or configure one UL BWP ID, and the target BWP is only one BWP; the preset signaling can indicate or configure multiple UL BWP IDs, and the target BWP includes multiple BWPs. Of course, if the preset signaling indicates or configures all the UL BWP IDs of the target carrier, the handover of all UL BWPs in the target carrier is performed.

In addition, among the target BWPs realized in the above different ways, if the target BWPs realized in one of the ways do not match, the target BWPs realized in other ways may also be selected for SRS transmission. For example, if the target BWP following the DL BWP ID activated on the target carrier does not match, the UL BWP with the largest bandwidth on the target carrier may be further used as the target BWP.

Optionally, the preset signaling includes at least one of the following:

Downlink control signaling DCI;

Radio resource control signaling RRC;

Multimedia control unit signaling MAC CE.

Of course, the implementation of the preset signaling is not limited to the above three kinds of signaling, and can also be completed by other applicable signaling, which will not be repeated here.

Optionally, when the target BWP is multiple BWPs, the preset signaling indicates or configures a set of BWP IDs used for carrier switching.

In this way, for the case where the target BWP is multiple BWPs, the preset signaling may indicate or configure the set of BWP IDs used for carrier switching. Here, a set of BWP IDs for carrier switching can be pre-defined or configured, and the set is identified. In this way, the preset signaling can directly indicate or configure the set identifier, so as to avoid too large information indicated or configured.

Optionally, the BWP ID set is associated with one or more carriers.

Wherein, for the case where one carrier is applicable, it can be realized that the BWP ID set is indicated or configured corresponding to only one carrier, or the BWP ID set is indicated or configured corresponding to each carrier one by one.

Of course, the carrier associated with or corresponding to the BWP ID set may not be limited, but in combination with the carrier switching information, it may also be limited that the carrier is a carrier that needs to be switched.

In addition, in this embodiment, optionally, when the preset signaling is downlink control signaling DCI, the UL BWP ID indicated or configured by the DCI is associated with one or more carriers.

In this way, the UL BWP ID indicated or configured by the DCI can be applied to one carrier or to multiple carriers. Therefore, for the case where one carrier is applicable, it can be realized that the UL BWP ID is indicated or configured corresponding to only one carrier, or the UL BWP ID is indicated or configured corresponding to each carrier one by one. Of course, there may be one or more UL BWP IDs indicated or configured by the DCI.

Considering that DCI can be used for carrier switching indication, for example, when the format of DCI is DCI 2-3, the DCI is configured with a carrier that needs to be switched. Therefore, the DCI indication or the configured UL BWP ID is associated with one or more carriers that need to be switched. carrier. For the case where one or more UL BWP IDs indicated or configured by the DCI are associated with one or more carriers requiring carrier switching, such as CC1, CC2 and CC3 have been instructed to perform carrier switching in the DCI, if one or more of the DCI indicated or configured Multiple UL BWP IDs, applicable to CC1, CC2 and CC3, when switching to CC1, CC2 and CC3, the one or more UL BWP IDs are used to determine the target BWP; if one or more of the UL BWP IDs indicated or configured by CI UL BWP ID, applicable to CC2 and CC3, only when switching to CC2 and CC3, the one or more UL BWP IDs are used to determine the target BWP. However, if one or more UL BWP IDs indicated or configured by the DCI are indicated or configured corresponding to each carrier requiring carrier switching, for example, CC1, CC2 and CC3 have been instructed to perform carrier switching in the DCI, and the DCI Perform UL BWP ID indication or configuration for each of the three CCs, so that when switching to CC1, one or more UL BWP IDs indicated or configured by DCI need to be used for CC1 to determine the target BWP on CC1; switch to CC2 When switching to CC3, one or more UL BWP IDs indicated or configured by DCI for CC2 need to be used to determine the target BWP on CC2; when switching to CC3, one or more UL BWP IDs indicated or configured by DCI for CC3 need to be used to determine the target BWP on CC3 Target BWP.

Wherein, the DCI indicates or configures multiple UL BWP IDs, which may be implemented by indicating or configuring a BWP ID set including the multiple UL BWP IDs. Of course, the BWP ID set may be associated with one or more carriers, and for DCI 2-3, the BWP ID set may be associated with one or more carriers that require carrier switching.

In this embodiment, optionally, when the preset signaling is radio resource control signaling RRC, the sixth UL BWP includes:

The UL BWP indicated by the BWP ID associated with the reference signal carrier switching information for channel sounding;

First activate the UL BWP indicated by the DL BWP ID;

First activate the UL BWP indicated by the UL BWP ID;

Initial UL BWP.

Specifically, the number of BWP IDs used to determine the target BWP associated with the channel sounding reference signal carrier switching information (SRS-CarrierSwitching) carried by the RRC can be one or more, and multiple BWP IDs can be implemented through a set of BWP IDs. For the first activated DL BWP ID (firstActiveDownlinkBWP-Id), the first activated UL BWP ID (firstActiveUplinkBWP-Id) and the initial UL BWP (initialUplinkBwp) carried by the RRC, the target BWP is directly indicated.

In addition, in this embodiment, optionally, step 202 includes:

In the case where the target BWP is multiple BWPs, switch among the multiple BWPs in sequence based on a first order, and send SRS; wherein the first order is based on the indicated BWP ID order, the configured BWP ID order , or the size of the BWP ID is determined.

In this way, for a target BWP including multiple BWPs, the multiple BWPs are switched in sequence based on the indicated or configured BWP IDs, or, based on the size of the BWP IDs, sequentially switched in descending or ascending order.

As for the bandwidth of the target BWP, in this embodiment, optionally, the bandwidth of the target BWP satisfies at least one of the following:

is equal to the bandwidth of the target carrier;

equal to the bandwidth of the DL BWP activated on the target carrier;

It is equal to the maximum uplink capability bandwidth that the terminal can support on the target carrier.

Taking the same ID as the target BWP and the DL BWP activated on the target carrier as an example, the bandwidth of the target BWP can be equal to the bandwidth of the target carrier, the bandwidth of the DL BWP activated on the target carrier, or the bandwidth of the terminal on the target carrier. The maximum upstream bandwidth that can be supported.

Wherein, when the maximum uplink capability bandwidth that the terminal can support on the target carrier is greater than or equal to the bandwidth of the DL BWP activated on the target carrier, the bandwidth of the target BWP is preferably the bandwidth of the activated DL BWP; When the maximum uplink capability bandwidth is less than or equal to the bandwidth of the DL BWP activated on the target carrier, the bandwidth of the target BWP is preferably the uplink maximum capability bandwidth that the terminal can support on the target carrier.

To sum up, the method of the embodiment of the present application firstly switches the source carrier to the target carrier according to the carrier switching information, and then sends SRS on one or more BWPs of the target carrier, so as to complete the uplink CSI acquisition of all carriers.

It should be noted that, for the carrier switching processing method provided by the embodiments of the present application, the execution subject may be a carrier switching processing apparatus, or a control module in the carrier switching processing apparatus for executing the loading carrier switching processing method. In the embodiments of the present application, the carrier switching processing method provided by the embodiments of the present application is described by taking the carrier switching processing apparatus performing the loading carrier switching processing method as an example.

As shown in FIG. 3 , a carrier switching processing apparatus 300 according to an embodiment of the present application includes:

The processing module 310 is configured to switch from the source carrier to the target carrier according to the carrier switching information;

The sending module 320 is used to send the sounding reference signal SRS on the target bandwidth part BWP of the target carrier;

The target BWP is one or more BWPs on the target carrier.

Optionally, the target BWP includes at least one of the following:

the first uplink UL BWP at a preset position on the target carrier;

the third UL BWP with the largest bandwidth on the target carrier;

Optionally, when the preset signaling is downlink control signaling DCI, the UL BWP ID indicated or configured by the DCI is associated with one or more carriers.

Optionally, when the preset signaling is radio resource control signaling RRC, the sixth UL BWP includes:

First activate the UL BWP indicated by the DL BWP ID;

First activate the UL BWP indicated by the UL BWP ID;

Initial UL BWP.

Optionally, the BWP ID set is associated with one or more carriers.

Optionally, the processing module is also used for:

Optionally, the bandwidth of the target BWP satisfies at least one of the following:

is equal to the bandwidth of the target carrier;

equal to the bandwidth of the DL BWP activated on the target carrier;

The apparatus of this embodiment firstly switches from the source carrier to the target carrier according to the carrier switching information, and then sends SRS on one or more BWPs of the target carrier, so as to complete uplink CSI acquisition of all carriers.

The carrier switching processing apparatus in this embodiment of the present application may be an apparatus, or may be a component, an integrated circuit, or a chip in a terminal. The apparatus may be a mobile electronic device or a non-mobile electronic device. Exemplarily, the mobile electronic device can be a mobile phone, a tablet computer, a notebook computer, a PDA, a car electronic device, a wearable device, a super mobile personal computer, a netbook or a personal digital assistant, etc., and the non-mobile electronic device can be a server, a network-affiliated device, etc. A storage (Network Attached Storage, NAS), a personal computer (personal computer, PC), a television (television, TV), a teller machine or a self-service machine, etc., are not specifically limited in the embodiments of the present application.

The carrier switching processing apparatus in this embodiment of the present application may be an apparatus having an operating system. The operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, which are not specifically limited in the embodiments of the present application.

The carrier switching processing apparatus provided in the embodiment of the present application can implement each process implemented by the terminal in the method embodiment of FIG. 1 , and in order to avoid repetition, details are not repeated here.

Optionally, as shown in FIG. 4 , an embodiment of the present application further provides a terminal 400 , including a processor 401 , a memory 402 , and a program stored on the memory 402 and executable on the processor 401 or When the program or instruction is executed by the processor 401, each process of the above carrier switching processing method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, details are not repeated here.

FIG. 5 is a schematic diagram of a hardware structure of a terminal implementing various embodiments of the present application.

The terminal 500 includes but is not limited to: a radio frequency unit 501, a network module 502, an audio output unit 503, an input unit 504, a sensor 505, a display unit 506, a user input unit 507, an interface unit 508, a memory 509, a processor 510 and other components .

Those skilled in the art can understand that the terminal 500 may further include a power supply (such as a battery) for supplying power to various components, and the power supply may be logically connected to the processor 510 through a power management system, so as to manage charging, discharging, and power consumption through the power management system management and other functions. The terminal structure shown in FIG. 5 does not constitute a limitation to the terminal, and the terminal may include more or less components than shown, or combine some components, or arrange different components, which will not be repeated here.

It should be understood that, in this embodiment of the present application, the input unit 504 may include a graphics processor (Graphics Processing Unit, GPU) 5041 and a microphone 5042. Such as camera) to obtain still pictures or video image data for processing. The display unit 506 may include a display panel 5061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 507 includes a touch panel 5071 and other input devices 5072 . The touch panel 5071 is also called a touch screen. The touch panel 5071 may include two parts, a touch detection device and a touch controller. Other input devices 5072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which are not described herein again.

In the embodiment of the present application, the radio frequency unit 501 receives the downlink data from the network side device, and then processes it to the processor 510; in addition, sends the uplink data to the network side device. Generally, the radio frequency unit 501 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

Memory 509 may be used to store software programs or instructions as well as various data. The memory 509 may mainly include a storage program or instruction area and a storage data area, wherein the stored program or instruction area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.) and the like. In addition, the memory 509 may include a high-speed random access memory, and may also include a non-volatile memory, wherein the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM) , PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. For example at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.

The processor 510 may include one or more processing units; optionally, the processor 510 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, application programs or instructions, etc., Modem processors mainly deal with wireless communications, such as baseband processors. It can be understood that, the above-mentioned modulation and demodulation processor may not be integrated into the processor 510.

The processor 510 is configured to switch from the source carrier to the target carrier according to the carrier switching information;

The target BWP is one or more BWPs on the target carrier.

The terminal in this embodiment firstly switches from the source carrier to the target carrier according to the carrier switching information, and then sends SRS on one or more BWPs of the target carrier, so as to complete uplink CSI acquisition of all carriers.

The embodiments of the present application further provide a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, each process of the foregoing carrier switching processing method embodiment can be achieved, and can achieve the same In order to avoid repetition, the technical effect will not be repeated here.

Wherein, the processor is the processor in the electronic device described in the foregoing embodiments. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (Read-Only Memory, referred to as ROM), random access memory (Random Access Memory, referred to as RAM), a magnetic disk or an optical disk, etc.

An embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction to implement the above embodiments of the carrier switching processing method and can achieve the same technical effect, in order to avoid repetition, it will not be repeated here.

It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip, or the like.

It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element. In addition, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in the reverse order depending on the functions involved. To perform functions, for example, the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to some examples may be combined in other examples.

From the description of the above embodiments, those skilled in the art can clearly understand that the method of the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is better implementation. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence or in a part that contributes to the prior art, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, CD-ROM), including several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of this application.

The embodiments of the present application have been described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive. Under the inspiration of this application, without departing from the scope of protection of the purpose of this application and the claims, many forms can be made, which all fall within the protection of this application.

Claims

A carrier switching processing method, applied to a terminal, includes:

According to the carrier switching information, the source carrier is switched to the target carrier;

on the target bandwidth part BWP of the target carrier, sending a sounding reference signal SRS;

The target BWP is one or more BWPs on the target carrier.
The method of claim 1, wherein the target BWP comprises at least one of the following:

the first uplink UL BWP at a preset position on the target carrier;

The second UL BWP on the target carrier, the ID of the second UL BWP is the same as the ID of the downlink DL BWP activated on the target carrier;

the third UL BWP with the largest bandwidth on the target carrier;

a fourth UL BWP on the target carrier, where the fourth UL BWP is the UL BWP with the smallest bandwidth among the UL BWPs that can cover the DL BWP activated on the target carrier;

the fifth UL BWP on the target carrier, the fifth UL BWP is indicated by the UL BWP ID activated on the source carrier;

The sixth UL BWP on the target carrier, the sixth UL BWP is indicated by a preset signaling or a configured UL BWP ID.
The method according to claim 2, wherein, when the preset signaling is downlink control signaling DCI, the UL BWP ID indicated or configured by the DCI is associated with one or more carriers.
The method according to claim 2, wherein, in the case that the preset signaling is radio resource control signaling RRC, the sixth UL BWP comprises:

The UL BWP indicated by the BWP ID associated with the reference signal carrier switching information for channel sounding;

First activate the UL BWP indicated by the DL BWP ID;

First activate the UL BWP indicated by the UL BWP ID;

Initial UL BWP.
The method according to claim 2, wherein, when the target BWP is a plurality of BWPs, the preset signaling indicates or configures a set of BWP IDs used for carrier switching.
The method of claim 5, wherein the set of BWP IDs is associated with one or more carriers.
The method according to claim 1 or 5, wherein the sending a sounding reference signal SRS on the target bandwidth part BWP of the target carrier comprises:

In the case where the target BWP is multiple BWPs, switch among the multiple BWPs in sequence based on a first order, and send SRS; wherein the first order is based on the indicated BWP ID order, the configured BWP ID order , or the size of the BWP ID is determined.
The method according to claim 1, wherein the bandwidth of the target BWP satisfies at least one of the following:

is equal to the bandwidth of the target carrier;

equal to the bandwidth of the DL BWP activated on the target carrier;

It is equal to the maximum uplink capability bandwidth that the terminal can support on the target carrier.
A carrier switching processing device, comprising:

a processing module for switching from the source carrier to the target carrier according to the carrier switching information;

a sending module, configured to send a sounding reference signal SRS on the target bandwidth part BWP of the target carrier;

The target BWP is one or more BWPs on the target carrier.
The apparatus of claim 9, wherein the target BWP comprises at least one of the following:

the first uplink UL BWP at a preset position on the target carrier;

the second UL BWP on the target carrier, the ID of the second UL BWP is the same as the ID of the downlink DL BWP activated on the target carrier;

the third UL BWP with the largest bandwidth on the target carrier;

a fourth UL BWP on the target carrier, where the fourth UL BWP is the UL BWP with the smallest bandwidth among the UL BWPs that can cover the DL BWP activated on the target carrier;

the fifth UL BWP on the target carrier, the fifth UL BWP is indicated by the UL BWP ID activated on the source carrier;

The sixth UL BWP on the target carrier, the sixth UL BWP is indicated by a preset signaling or a configured UL BWP ID.
The apparatus according to claim 10, wherein, when the preset signaling is downlink control signaling DCI, the UL BWP ID indicated or configured by the DCI is associated with one or more carriers.
The apparatus according to claim 10, wherein, in the case that the preset signaling is radio resource control signaling RRC, the sixth UL BWP comprises:

The UL BWP indicated by the BWP ID associated with the reference signal carrier switching information for channel sounding;

First activate the UL BWP indicated by the DL BWP ID;

First activate the UL BWP indicated by the UL BWP ID;

Initial UL BWP.
The apparatus according to claim 10, wherein, in the case that the target BWP is multiple BWPs, the preset signaling indicates or configures a set of BWP IDs used for carrier switching.
14. The apparatus of claim 13, wherein the set of BWP IDs is associated with one or more carriers.
The device according to claim 9 or 13, wherein the sending module is further configured to:

In the case where the target BWP is multiple BWPs, switch among the multiple BWPs in sequence based on a first order, and send SRS; wherein the first order is based on the indicated BWP ID order, the configured BWP ID order , or the size of the BWP ID is determined.
The apparatus according to claim 9, wherein the bandwidth of the target BWP satisfies at least one of the following:

is equal to the bandwidth of the target carrier;

equal to the bandwidth of the DL BWP activated on the target carrier;

It is equal to the maximum uplink capability bandwidth that the terminal can support on the target carrier.
A terminal, comprising a processor, a memory, and a program or instruction stored on the memory and executable on the processor, wherein the program or instruction when executed by the processor implements the procedures as claimed in claims 1 to 1. Steps of the carrier switching processing method described in any one of 8.
A readable storage medium, wherein a program or an instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, the method for processing carrier switching according to any one of claims 1 to 8 is implemented. step.
A chip, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or an instruction to implement the carrier switching according to any one of claims 1 to 8 The steps of the processing method.
A computer program product, wherein the program product is stored in a non-volatile storage medium, the program product being executed by at least one processor to implement carrier switching as claimed in any one of claims 1 to 8 The steps of the processing method.
A carrier switching processing apparatus, wherein the carrier switching processing apparatus is configured to perform the steps of the carrier switching processing method according to any one of claims 1-8.