WO2025145400A1 - Communication method and apparatus, and storage medium - Google Patents

Abstract

The present disclosure relates to a communication method and apparatus, and a storage medium. The method comprises: receiving first information sent by a network device, the first information being used for instructing a plurality of termina to switch to a first frequency band. In the embodiment, the network device indicates by means of the information that the plurality of terminals all can switch to the first frequency band, ensuring that the terminals can switch to the corresponding frequency band, ensuring the accuracy of frequency band switching of the terminals, and then ensuring the reliability of communication of the terminals based on the frequency band.

Description

Communication method, device and storage medium Technical Field

The present disclosure relates to the field of communication technology, and in particular to a communication method, device and storage medium.

Background Art

With the rapid development of mobile communication technology, the available cell bandwidth is getting wider and wider. In order to reduce the power consumption of the terminal and improve the efficiency of the system frequency, the frequency in the same cell is divided into different frequency bands, and each frequency band is proposed as a BWP (Bandwith Part). Data is transmitted through multiple BWPs obtained by dividing the frequency band. Among them, for a cell, multiple BWPs can be activated at the same time, but for a terminal, only one BWP can be activated at the same time, or one uplink BWP and one downlink BWP.

Summary of the invention

The embodiments provided by the present disclosure ensure that multiple terminals can be controlled to switch to the first frequency band, reducing signaling overhead. At the same time, the network device can reduce the signal/channel transmission on the frequency band where no terminal is active, thereby achieving energy saving of the network device.

The embodiments of the present disclosure provide a communication method, a device, and a storage medium.

According to a first aspect of an embodiment of the present disclosure, a communication method is proposed, the method comprising:

First information sent by a network device is received, where the first information is used to instruct multiple terminals to switch to a first frequency band.

According to a second aspect of an embodiment of the present disclosure, a communication method is proposed, the method comprising:

First information is sent to a terminal, where the first information is used to instruct multiple terminals to switch to a first frequency band.

According to a third aspect of an embodiment of the present disclosure, a communication method is proposed, the method comprising:

The network device sends first information to the terminal, where the first information is used to instruct multiple terminals to switch to the first frequency band;

The terminal receives first information sent by a network device.

According to a fourth aspect of an embodiment of the present disclosure, a communication device is provided, including:

The transceiver module is used to receive first information sent by a network device, where the first information is used to instruct multiple terminals to switch to a first frequency band.

According to a fifth aspect of an embodiment of the present disclosure, a communication device is provided, including:

The transceiver module is used to send first information to the terminal, where the first information is used to instruct multiple terminals to switch to the first frequency band.

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

one or more processors;

The communication device is used to execute any one of the methods described in the first aspect or the third aspect.

According to a seventh aspect of an embodiment of the present disclosure, a communication device is provided, including:

one or more processors;

The communication device is used to execute any method described in the second aspect or the third aspect.

According to an eighth aspect of an embodiment of the present disclosure, a communication system is provided, including:

A terminal and a network device, wherein the terminal is configured to implement the communication method described in the first aspect, and the network device is configured to implement the communication method described in the first aspect.

According to a ninth aspect of an embodiment of the present disclosure, a storage medium is proposed, wherein the storage medium stores instructions, and when the instructions are executed on a communication device, the communication device executes a method as described in any one of the first aspects.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings described herein are used to provide a further understanding of the embodiments of the present disclosure and constitute a part of the present disclosure. The illustrative embodiments of the embodiments of the present disclosure and their descriptions are used to explain the embodiments of the present disclosure and do not constitute an improper limitation on the embodiments of the present disclosure. In the drawings:

FIG1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure;

FIG2 is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure;

FIG3A is a flow chart of a communication method according to an embodiment of the present disclosure;

FIG3B is a flow chart of a communication method according to an embodiment of the present disclosure;

FIG4A is a flow chart of a communication method according to an embodiment of the present disclosure;

FIG4B is a flow chart of a communication method according to an embodiment of the present disclosure;

FIG5 is a flow chart of a communication method according to an embodiment of the present disclosure;

FIG6 is a flow chart of a communication method according to an embodiment of the present disclosure;

FIG7A is a schematic diagram of the structure of a communication device provided in an embodiment of the present disclosure;

FIG7B is a schematic diagram of the structure of a communication device provided in an embodiment of the present disclosure;

FIG8A is a schematic diagram of the structure of a communication device provided in an embodiment of the present disclosure;

FIG8B is a schematic diagram of the structure of a chip proposed in an embodiment of the present disclosure.

DETAILED DESCRIPTION

The present disclosure provides a communication method, an apparatus and a storage medium.

According to a first aspect of an embodiment of the present disclosure, a communication method is proposed, the method being executed by a terminal, the method comprising:

First information sent by a network device is received, where the first information is used to instruct multiple terminals to switch to a first frequency band.

In the above embodiment, the network device indicates through information that multiple terminals can switch to the first frequency band, which not only reduces the signaling overhead, but also ensures that the terminal can switch to the corresponding frequency band, ensures the accuracy of the terminal switching frequency band, and further ensures the reliability of the terminal communicating based on the frequency band. In addition, the network device can reduce the signal/channel transmission on the frequency band where there is no terminal activity, thereby achieving energy saving of the network device.

In combination with some embodiments of the first aspect, in some embodiments, the first frequency band includes any one of a RB (Radio Bearer) set or a BWP.

In the above embodiment, it is stipulated that the frequency band is an RB set or a BWP, and the types of frequency bands are expanded, thereby expanding the types of frequency bands to which the terminal can switch.

In conjunction with some embodiments of the first aspect, in some embodiments, the first information includes at least one of the following:

Cell ID;

a frequency band identifier of the first frequency band;

Spare padding bits;

feedback time of second information, where the second information refers to feedback information of the terminal to the first information;

time-frequency resource information of the second information;

A switching indication is used to instruct multiple terminals to perform switching.

In the above embodiment, the types of information carried by the first information are expanded, thereby ensuring the accuracy of indicating the switching and ensuring the accuracy of the terminal executing the switching.

In combination with some embodiments of the first aspect, in some embodiments, the method further includes:

Switch to the first frequency band based on the first information.

In the above embodiment, the frequency band switching is performed based on the first information, so as to ensure the accuracy of indicating the switching and the accuracy of the switching performed by the terminal.

In combination with some embodiments of the first aspect, in some embodiments, the method further includes:

Stop at least one of the following actions on frequency bands other than the first frequency band:

PDCCH (Physical Downlink Control Channel) monitoring;

CSI-RS (Channel State Information-Reference Signal) measurement;

PDSCH (Physical Downlink Shared Channel) reception;

Send at least one of SRS (Sounding Reference Signal), PUCCH (Physical Uplink Control Channel) or PUSCH (Physical Uplink Shared Channel).

In the above embodiment, the terminal switches to the first frequency band, and for other frequency bands except the first frequency band, the terminal should stop related actions to ensure the accuracy of terminal communication.

In combination with some embodiments of the first aspect, in some embodiments, the method further includes:

Perform at least one of the following actions on the first frequency band:

PDCCH monitoring;

CSI-RS measurement;

PDSCH reception;

At least one of SRS, PUCCH or PUSCH is transmitted.

In the above embodiment, after the terminal switches to the first frequency band, the terminal can perform corresponding actions based on the first frequency band to ensure the reliability of the terminal's communication based on the first frequency band.

In combination with some embodiments of the first aspect, in some embodiments, the method further includes:

Sending third information to the network device, the third information is used to indicate whether the terminal supports multiple terminals to perform frequency band switching, which can also be understood as: whether the terminal supports receiving group-common signaling to perform frequency band switching.

In the above embodiment, the terminal reports the capabilities it supports through information to ensure the accuracy of the capabilities reported by the terminal, so that the network can perform reasonable configuration according to the capabilities of the terminal, such as configuring the RNTI (Radio Network Temporary Indentifier) corresponding to the group-common signaling, search space, etc., thereby ensuring that the network can perform reasonable configuration according to the capabilities of the terminal, such as configuring the RNTI (Radio Network Temporary Indentifier) corresponding to the group-common signaling, search space, etc., and then ensuring that the network can perform reasonable configuration according to the capabilities of the terminal, such as configuring the RNTI (Radio Network Temporary Indentifier) corresponding to the group-common signaling, and searching space, etc. Perform frequency band switching.

In combination with some embodiments of the first aspect, in some embodiments, the method further includes:

Receive the fourth information sent by the network device, where the fourth information is used to indicate whether the cell corresponding to the network device supports frequency band switching for multiple terminals, which can also be understood as: whether the cell supports frequency band switching using group-common signaling.

In the above embodiment, the network device indicates the capability of the cell through information so that the terminal can perform reasonable communication according to the capability of the cell, ensuring that the terminal performs frequency band switching in a cell that supports the capability.

In combination with some embodiments of the first aspect, in some embodiments, the method further includes:

When the terminal supports receiving UE group-common signaling for frequency band switching and the cell corresponding to the network device supports frequency band switching through UE group common signaling, the terminal monitors the PDCCH carrying the first information.

In the above embodiment, when the terminal determines that the frequency band switching can be performed and the cell also supports the frequency band switching, the terminal monitors the PDCCH to ensure the accuracy of the terminal monitoring the PDCCH, thereby ensuring the reliability of the terminal communication.

In combination with some embodiments of the first aspect, in some embodiments, the PDCCH carrying the first information is a group-common PDCCH.

In combination with some embodiments of the first aspect, in some embodiments, the first information is group-common DCI.

In combination with some embodiments of the first aspect, in some embodiments, the PDCCH carrying the first information is sent on a common search space, and the search space type is Type 3.

In combination with some embodiments of the first aspect, in some embodiments, the method further includes:

Sending second information to the network device, where the second information refers to feedback information of the terminal to the first information.

In the above embodiment, the terminal feeds back information on whether the first information is received to the network device, thereby ensuring the accuracy of the feedback on whether the first information is received by the terminal to the network device, thereby ensuring the reliability of communication.

In a second aspect, an embodiment of the present disclosure provides a communication method, the method comprising:

First information is sent to a terminal, where the first information is used to instruct multiple terminals to switch to a first frequency band.

In combination with some embodiments of the second aspect, in some embodiments, the first frequency band includes any one of a RB set or a BWP.

In conjunction with some embodiments of the second aspect, in some embodiments, the first information includes at least one of the following:

Cell ID;

a frequency band identifier of the first frequency band;

Spare padding bits;

feedback time of second information, where the second information refers to feedback information of the terminal to the first information;

time-frequency resource information of the second information;

A switching indication is used to instruct multiple terminals to perform switching.

In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

Receive third information sent by the terminal, where the third information is used to indicate whether the terminal supports frequency band switching for multiple terminals.

In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

Sending fourth information to the terminal, where the fourth information is used to indicate whether the cell corresponding to the network device supports frequency band switching for multiple terminals.

In combination with some embodiments of the second aspect, in some embodiments, the PDCCH carrying the first information is a group-common PDCCH.

In combination with some embodiments of the second aspect, in some embodiments, the first information is group-common DCI.

In combination with some embodiments of the second aspect, in some embodiments, the PDCCH carrying the first information is sent on a common search space, and the search space type is Type 3.

In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

Second information sent by the terminal is received, where the second information refers to feedback information of the terminal to the first information.

In a third aspect, an embodiment of the present disclosure provides a communication method, the method comprising:

The network device sends first information to the terminal, where the first information is used to instruct multiple terminals to switch to the first frequency band;

The terminal receives first information sent by the network device.

In a fourth aspect, an embodiment of the present disclosure provides a communication device, which includes at least one of a transceiver module and a processing module; wherein the terminal is used to execute an optional implementation method of the first aspect or the third aspect.

In a fifth aspect, an embodiment of the present disclosure provides a communication device, which includes at least one of a transceiver module and a processing module; wherein the terminal is used to execute an optional implementation method of the second aspect or the third aspect.

In a sixth aspect, an embodiment of the present disclosure provides a communication device, including:

one or more processors;

The communication device is used to execute any one of the methods in the first aspect.

In a seventh aspect, an embodiment of the present disclosure provides a communication device, including:

one or more processors;

The communication device is used to execute any one of the methods in the second aspect.

In an eighth aspect, an embodiment of the present disclosure provides a storage medium, wherein the storage medium stores first information, and when the first information is run on a communication device, the communication device executes a method as described in any one of the first aspect or the second aspect.

In a ninth aspect, an embodiment of the present disclosure proposes a program product. When the program product is executed by a communication device, the communication device executes any one of the methods described in the first aspect or the second aspect.

In a tenth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a communication device, enables the communication device to execute any method described in the first aspect or the second aspect.

In an eleventh aspect, an embodiment of the present disclosure provides a chip or a chip system, wherein the chip or the chip system comprises a processing circuit configured to execute any one of the methods described in the first aspect or the second aspect.

It is understandable that the above-mentioned terminal, storage medium, program product, computer program, chip or chip system are all used to execute the method proposed in the embodiment of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding method, which will not be repeated here.

The embodiments of the present disclosure provide communication methods, devices, and storage media. In some embodiments, the terms communication method, information communication method, communication method, etc. can be replaced with each other, the terms communication device, information communication device, communication device, etc. can be replaced with each other, and the terms information processing system, communication system, etc. can be replaced with each other.

The embodiments of the present disclosure are not exhaustive, but are only illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined, for example, some or all of the steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

In each embodiment of the present disclosure, unless otherwise specified or there is a logical conflict, the terms and/or descriptions between the embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form a new embodiment based on their internal logical relationships.

The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular form, such as "a", "an", "the", "above", "said", "aforementioned", "this", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun after the article may be understood as a singular expression or a plural expression.

In the embodiments of the present disclosure, “plurality” refers to two or more.

In some embodiments, the terms "at least one of", "one or more", "a plurality of", "multiple", etc. can be used interchangeably.

In some embodiments, "at least one of A and B", "A and/or B", "A in one case, B in another case", "in response to one case A, in response to another case B", etc., may include the following technical solutions according to the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed). When there are more branches such as A, B, C, etc., the above is also similar.

In some embodiments, the recording method of "A or B" may include the following technical solutions according to the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). When there are more branches such as A, B, C, etc., the above is also similar.

The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects, and do not constitute restrictions on the position, order, priority, quantity or content of the description objects. The statement of the description object refers to the description in the context of the claims or embodiments, and should not constitute unnecessary restrictions due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields", and the "first" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number, and can be one or more. Taking the "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes may be the same or different. For example, if the description object is "device", then the "first device" and the "second device" may be the same device or different devices, and their types may be the same or different. For another example, if the description object is "information", then the "first information" and the "second information" may be the same information or different information, and their contents may be the same or different.

In some embodiments, “including A”, “comprising A”, “used to indicate A”, and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

In some embodiments, terms such as "time/frequency", "time/frequency domain", etc. refer to the time domain and/or the frequency domain.

In some embodiments, terms such as "in response to ...", "in response to determining ...", "in the case of ...", "at the time of ...", "when ...", "if ...", "if ...", etc. can be used interchangeably.

In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not lower than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "no more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

In some embodiments, devices and equipment may be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they may also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station (radio base station)", "fixed station" and in some embodiments may also be understood as "node", "access point (access point)", "transmission point (TP)", "reception point (RP)", "transmission and/or reception point (transmission/reception point, TRP)", "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (bandwidth part, BWP)", etc.

In some embodiments, the term "terminal" or "terminal device" may be referred to as "user equipment (terminal)", "user terminal (user terminal)", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.

In some embodiments, acquisition of data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

In some embodiments, data, information, etc. may be obtained with the user's consent.

In addition, each element, each row, or each column in the table of the embodiments of the present disclosure may be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns may also be implemented as an independent embodiment.

FIG1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure. As shown in FIG1 , the method provided in the embodiment of the present disclosure can be applied to a communication system 100, and the communication system may include a terminal 101 and a network device 102. It should be noted that the communication system 100 may also include other devices, and the present disclosure does not limit the devices included in the communication system 100.

In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with a communication function, a smart car, a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (VR) terminal device, At least one of augmented reality (AR) terminal devices, wireless terminal devices in industrial control, wireless terminal devices in self-driving, wireless terminal devices in remote medical surgery, wireless terminal devices in smart grids, wireless terminal devices in transportation safety, wireless terminal devices in smart cities, and wireless terminal devices in smart homes, but not limited to these.

In some embodiments, the network device 102 may include at least one of an access network device and a core network device.

In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved Node B (eNB), a next generation evolved Node B (ng-eNB), a next generation Node B (gNB), a node B (NB), a home node B (HNB), a home evolved node B (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

In some embodiments, the technical solution of the present disclosure may be applicable to the Open RAN architecture. In this case, the interfaces between access network devices or within access network devices involved in the embodiments of the present disclosure may become internal interfaces of Open RAN, and the processes and information interactions between these internal interfaces may be implemented through software or programs.

In some embodiments, the access network device may be composed of a centralized unit (central unit, CU) and a distributed unit (distributed unit, DU), wherein the CU may also be called a control unit (control unit). The CU-DU structure may be used to split the protocol layer of the access network device, with some functions of the protocol layer being centrally controlled by the CU, and the remaining part or all of the functions of the protocol layer being distributed in the DU, and the DU being centrally controlled by the CU, but not limited to this.

In some embodiments, the core network device may be a device including one or more network elements, or may be multiple devices or device groups, each including all or part of the one or more network elements. The network element may be virtual or physical. The core network may include, for example, at least one of the Evolved Packet Core (EPC), the 5G Core Network (5GCN), and the Next Generation Core (NGC).

It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. A person of ordinary skill in the art can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or part of the subject, but are not limited thereto. The subjects shown in FIG1 are examples, and the communication system may include all or part of the subjects in FIG1 , or may include other subjects other than FIG1 , and the number and form of the subjects are arbitrary, and the subjects may be physical or virtual, and the connection relationship between the subjects is an example, and the subjects may be connected or disconnected, and the connection may be in any manner, and may be a direct connection or an indirect connection, and may be a wired connection or a wireless connection.

The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, the fourth generation mobile communication system (4G), the fifth generation mobile communication system (5G), and the 5G new air interface (new radio, NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-Wide Band (UWB), Bluetooth (Bluetooth (registered trademark)), Public Land Mobile Network (PLMN) network, Device-to-Device (D2D) system, Machine-to-Machine (M2M) system, Internet of Things (IoT) Things, IoT) system, vehicle-to-everything (V2X), systems using other communication methods, and next-generation systems based on them. In addition, multiple systems can also be combined (for example, a combination of LTE or LTE-A and 5G, etc.) for application.

In some embodiments, the present disclosure proposes an NTN system, which adds a transfer device between the network device and the terminal, and the network device and the terminal communicate through the transfer device. Optionally, the transfer device is a satellite, a ground transfer device or other equipment with a transfer function. Optionally, the transfer device expands the coverage range, which can ensure that the network device can cover more terminals for communication.

In some embodiments, the network device supports multiple beams and communicates with the terminal through the multiple beams. Optionally, different beams cover different areas. For different areas, the number of services using the beams is different, so the beams need to be dynamically allocated based on the services.

In some embodiments, the present disclosure relates to limitations on energy and link bandwidth. Optionally, taking capability as an example, each beam and each frequency coverage is related to power. Optionally, each beam consumes a certain amount of power. For example, take a beam corresponding to 5 MHz (megahertz) as an example, and the relay device can send beams of 10 different wave positions, each of which occupies 5 MHz, and the occupied frequency bands can be the same or different. For another example, the relay device can send beams of 8 different wave positions, 7 of which are 5 MHz and one is 15 MHz.

In some embodiments, the present disclosure relates to a BWP, which is a subset of the entire bandwidth, and the size of each BWP, as well as the SCS and CP used, can be flexibly configured. Up to 4 dedicated BWPs can be configured for uplink and downlink respectively. However, it should be noted that the bandwidth of the BWP must be greater than or equal to the SSB, but the BWP does not necessarily contain the SSB. For the same terminal, only one BWP can be activated at the same time in DL (Downlink) or UL (Up Link), and the terminal sends and receives data and retrieves PDCCH on this BWP.

Optionally, BWP includes four types.

The first type: Initial BWP: used for receiving information before UE access, mainly for receiving SIB (System Information Blocks) and RA related information, generally used in Idle state. The BWP in the connected state is generally larger than the Initial BWP. Also called BWP#0.

The second type: First Active BWP: The first UE-specific BWP. The UE can send and receive data and retrieve PDCCH on this BWP.

The third type: default BWP: UE-specific BWP, which is configured for the UE in RRCReconfiguration. If it is not configured, the Initial BWP is considered to be the default BWP, and after the bwp-inactivityTimer times out, if the UE is still not scheduled, the UE is switched to the default BWP.

The fourth type: regular BWP, UE-specific BWP, generally BWP#1, BWP#2, etc.

FIG2 is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2 , the embodiment of the present disclosure relates to a communication method, and the method includes:

Step S2101: The terminal sends third information to the network device.

In some embodiments, the third information is used to indicate whether the terminal supports multiple terminals to perform frequency band switching. In some embodiments, the third information is used to indicate the capabilities of the terminal. Optionally, the capabilities of the terminal refer to whether the terminal supports multiple terminals to perform frequency band switching. In some embodiments, the third information is used to indicate that the terminal has the capability to support multiple terminals to perform frequency band switching. In some embodiments, multiple terminals performing frequency band switching refers to multiple terminals supporting simultaneous frequency band switching.

It should be noted that, in the embodiment of the present disclosure, multiple terminals support switching to one frequency band at the same time.

In some embodiments, the third information is also used to indicate whether the terminal supports receiving group-common signaling to perform frequency band switching. Optionally, the group-common signaling is a signaling used to indicate the capability of the terminal.

In some embodiments, the name of the third information is not limited, and it can be, for example, capability information, reporting information, report information, uplink information, etc.

Step S2102: The network device receives the third information sent by the terminal.

In some embodiments, the terminal sends the third information. In some embodiments, the network device receives the third information.

In the embodiment of the present disclosure, after the network device receives the third information sent by the terminal, it can determine that the terminal supports frequency band switching of multiple terminals.

In some embodiments, if the terminal does not send the third information, the network device determines that the terminal does not support frequency band switching for multiple terminals.

In some embodiments, the third information may also indicate that the terminal does not support multiple terminals to perform frequency band switching. Optionally, the third information includes a first number of bits. Optionally, the first number of bits is a first value, used to indicate that the terminal supports multiple terminals to perform frequency band switching. Optionally, the first number of bits is a second value, used to indicate that the terminal does not support multiple terminals to perform frequency band switching. Optionally, the first number is 1, 2, 3 or other values.

It should be noted that step S2101 to step S2102 in the embodiment of the present disclosure are optional steps. In another embodiment, the above steps S2101 to step S2102 may not be performed.

Step S2103: The network device sends fourth information to the terminal.

In some embodiments, the fourth information is used to indicate whether the cell corresponding to the network device supports multiple terminals to perform frequency band switching. In some embodiments, the fourth information is used to indicate the capability of the cell corresponding to the network device. Optionally, the capability of the cell refers to whether the cell supports multiple terminals to perform frequency band switching. In some embodiments, the fourth information is used to indicate that the cell corresponding to the network device has the capability to support multiple terminals to perform frequency band switching. In some embodiments, multiple terminals performing frequency band switching means that multiple terminals support simultaneous frequency band switching.

In some embodiments, the fourth information is used to indicate whether the cell supports frequency band switching using group-common signaling.

In some embodiments, the name of the fourth information is not limited, and may be, for example, capability information, downlink information, indication information, control information, etc.

Step S2104: the terminal receives fourth information sent by the network device.

In the embodiment of the present disclosure, after the network device receives the fourth information sent by the terminal, it can determine that the cell corresponding to the network device supports frequency band switching for multiple terminals.

In some embodiments, if the network device does not send the fourth information, the terminal determines that the cell corresponding to the network device does not support frequency band switching for multiple terminals.

In some embodiments, the fourth information may also indicate that the cell corresponding to the network device does not support multiple terminals to perform frequency band switching. Optionally, the fourth information includes a first number of bits. Optionally, the first number of bits is a first value, used to indicate that the cell corresponding to the network device supports multiple terminals to perform frequency band switching. Optionally, the first number of bits is a second value, used to indicate that the terminal does not support multiple terminals to perform frequency band switching. Optionally, the first number is 1, 2, 3 or other values.

In some embodiments, the fourth information is carried in RRC (Radio Resource Control) signaling. Alternatively, it can also be understood that the fourth information is RRC information.

It should be noted that step S2103 to step S2104 in the embodiment of the present disclosure are optional steps. In another embodiment, the above steps S2103 to step S2104 may not be performed.

Step S2105: The network device sends first information to the terminal.

In some embodiments, the first information is used to indicate that multiple terminals need to switch to the first frequency band. In some embodiments, the first information is used to indicate that multiple terminals need to switch from the current frequency band to the first frequency band. In some embodiments, the first frequency band is carried in the first information, and the first frequency band is indicated by the first information. In some embodiments, the first frequency band is determined by a network device.

In some embodiments, the first information is used to instruct a terminal in a terminal group to switch to a first frequency band. Optionally, the terminal group includes multiple terminals.

It should be noted that the embodiment of the present disclosure is described by taking the example of the first information instructing multiple terminals to switch to the first frequency band. In another embodiment, the first information may also instruct a terminal to switch to the first frequency band.

In some embodiments, the first frequency band includes any one of a RB set or a BWP. Optionally, the first frequency band is a RB set. Optionally, the first frequency band is a BWP.

In some embodiments, the first information includes at least one of the following:

(1) Community identification.

The cell identifier is used to indicate a cell. In some embodiments, the cell identifier is used to indicate a cell where the first frequency band indicated by the first information is located when switching. Optionally, the cell identifier is represented by a cell ID.

(2) The frequency band identifier of the first frequency band.

The frequency band identifier is used to indicate the frequency band. In some embodiments, the frequency band identifier is represented by BWP ID.

(3) Spare padding bits.

In some embodiments, the spare padding bit refers to a bit position without practical meaning. In some embodiments, when the first information needs to be extended, the spare padding bit can be defined. In some embodiments, in order to reduce the complexity of the terminal blind detection of PDCCH, a padding bit, such as 0 bit, is used to make the payload size of multiple different DCI formats the same.

(4) Feedback time of the second information.

In some embodiments, the second information refers to feedback information of the terminal to the first information. In the disclosed embodiment, after receiving the first information, the terminal will also send second information to the network device, indicating whether the terminal has received the first information through the second information.

In some embodiments, the second information is HARQ information. Optionally, if the second information is HARQ-ACK, it means that the terminal has received the first information. Optionally, if the second information is HARQ-NACK, it means that the terminal has not received the first information.

(5) Time-frequency resource information of the second information.

In some embodiments, the time-frequency resource information is used to indicate the time-frequency resources required for sending the second information. Optionally, the time-frequency resource information includes time domain resource information and frequency domain resource information. The time domain resource information is used to indicate the time domain resources required for sending the second information. The frequency domain resource information is used to indicate the frequency domain resources required for sending the second information.

(6) Switching instructions.

In some embodiments, the switching indication is used to instruct multiple terminals to perform switching. In an embodiment of the present disclosure, the switching indication is used to indicate that the terminal needs to switch to the first frequency band or the predefined frequency band.

In some embodiments, the PDCCH carrying the first information is a group-common PDCCH. In the disclosed embodiment, the network device sends the first information to the terminal via the group-common PDCCH. Correspondingly, the terminal monitors the PDCCH to receive the first information.

In some embodiments, the first information is DCI. In some embodiments, the first information is group-common DCI. Optionally, the DCI format is 2-x. Optionally, x is an arbitrary value, which is not limited by the embodiments of the present disclosure. Alternatively, it can also be understood that 2-x is a defined value. In some embodiments, the first information is scrambled using a specific RNTI. Optionally, the specific RNTI is group BWP-RNTI.

In some embodiments, the PDCCH carrying the first information is sent on a common search space. Optionally, the search space type is Type3.

The following describes the content of the first information by taking examples.

In some embodiments, the first information includes a cell identifier and a frequency band identifier. The network device first switches the active BWPs of multiple UEs (UE#1, UE#2) to the first frequency band (BWP#1) of the cell identifier (cell#1) through group-common DCI, and after a period of time, switches the multiple UEs (UE#1, UE#2) to BWP#2 of cell#1 using group-common DCI. The bandwidth of BWP#1 is smaller than that of BWP#2.

In some embodiments, the first information includes a cell identifier and a frequency band identifier. The network device first switches the active BWPs of multiple UEs (UE#1, UE#2) to BWP#1 of cell#1 through group-common DCI, and after a period of time, uses UE-dedicated DCI, such as DCI format 1-1, to switch UE#1 to BWP#2 of cell#1, and the bandwidth of BWP#1 is smaller than that of BWP#2.

In some embodiments, the first information includes a frequency band identifier. The network device first switches the active BWPs of multiple UEs (UE#1, UE#2) to BWP#1 through group-common DCI, and after a period of time, switches the multiple UEs (UE#1, UE#2) to BWP#2 using group-common DCI. The bandwidth of BWP#1 is smaller than that of BWP#2.

In some embodiments, the first information includes a frequency band identifier. The network device first switches the active BWPs of multiple UEs (UE#1, UE#2) to BWP#1 through group-common DCI, and after a period of time, uses UE-dedicated DCI, such as format 1-1, to switch UE#1 to BWP#2, and the bandwidth of BWP#1 is smaller than that of BWP#2.

In some embodiments, the first information includes a switching indication. The first frequency band to which the terminal switches is a specific BWP. The specific BWP is determined by predefined rules and/or configuration signaling before receiving the group-common DCI. That is, the group-common DCI only carries the switching indication and does not provide the BWP information to be switched to.

Optionally, the specific BWP is any of the initial BWP, default BWP, firstActiveBWP or regular BWP.

Step S2106: the terminal receives the first information sent by the network device.

In the embodiment of the present disclosure, when the terminal receives the first information sent by the network device, it can determine that the first information indicates that a frequency band switching behavior needs to be performed.

In some embodiments, when the terminal supports multiple terminals to perform frequency band switching and the cell corresponding to the network device supports multiple terminals to perform frequency band switching, the PDCCH carrying the first information is monitored. In the disclosed embodiment, when the above steps S2101 to S2104 are all executed, the PDCCH carrying the first information is monitored.

Step S2107: The terminal sends second information to the network device.

In some embodiments, the second information refers to feedback information of the terminal to the first information.

Step S2108: The network device receives the second information sent by the terminal.

The second information is similar to the description of the second information in the above embodiment and will not be repeated here.

It should be noted that step S2107 to step S2108 in the embodiment of the present disclosure are optional steps. In another embodiment, the above steps S2107 to step S2108 may not be performed.

Step S2109: The terminal switches to the first frequency band based on the first information.

In the embodiment of the present disclosure, the terminal determines that the first information is used to indicate that multiple terminals need to switch to the first frequency band, so after the terminal receives the first information, it switches to the first frequency band.

In some embodiments, the network device sends the first information. In some embodiments, the terminal receives the first information.

In some embodiments, after the terminal switches to the first frequency band, it stops executing some behaviors. The behaviors that the terminal may stop are described below.

Optionally, at least one of the following actions on frequency bands other than the first frequency band is stopped:

(1) PDCCH monitoring;

(2) CSI-RS measurement;

(3) PDSCH reception;

(4) Send at least one of SRS, PUCCH or PUSCH.

In the embodiment of the present disclosure, since the terminal switches to the first frequency band, it means that the first frequency band is in an activated state at this time, and other frequency bands except the first frequency band are in an inactivated state. Therefore, the terminal will not perform operations on other frequency bands. Therefore, the terminal needs to stop the behavior on other frequency bands except the first frequency band.

In some embodiments, after the terminal switches to the first frequency band, it starts to execute some actions on the first frequency band. The actions that the terminal may execute are described below.

Optionally, at least one of the following actions is performed on the first frequency band:

(1) PDCCH monitoring.

(2) CSI-RS measurement.

(3)PDSCH reception.

(4) Send at least one of SRS, PUCCH or PUSCH.

In some embodiments, the names of information, etc. are not limited to the names recorded in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "code element", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

In some embodiments, terms such as "uplink", "uplink", "physical uplink" can be interchangeable, and terms such as "downlink", "downlink", "physical downlink" can be interchangeable, and terms such as "side", "sidelink", "side communication", "sidelink communication", "direct connection", "direct link", "direct communication", "direct link communication" can be interchangeable.

In some embodiments, "obtain", "obtain", "get", "receive", "transmit", "bidirectional transmission", "send and/or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from high levels, obtaining by self-processing, autonomous implementation, etc.

In some embodiments, terms such as "send", "transmit", "report", "send", "transmit", "bidirectional transmission", "send and/or receive" can be used interchangeably.

In some embodiments, terms such as "moment", "time point", "time", and "time position" can be interchangeable, and terms such as "duration", "period", "time window", "window", and "time" can be interchangeable.

In some embodiments, terms such as "certain", "preset", "preset", "set", "indicated", "some", "any", and "first" can be interchangeable, and "specific A", "preset A", "preset A", "set A", "indicated A", "some A", "any A", and "first A" can be interpreted as A pre-defined in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., and can also be interpreted as specific A, some A, any A, or first A, etc., but is not limited to this.

The communication method involved in the embodiment of the present disclosure may include at least one of steps S2101 to S2109. For example, step S2101 can be implemented as an independent embodiment, step S2102 can be implemented as an independent embodiment, step S2103 can be implemented as an independent embodiment, step S2104 can be implemented as an independent embodiment, step S2105 can be implemented as an independent embodiment, step S2106 can be implemented as an independent embodiment, step S2107 can be implemented as an independent embodiment, step S2108 can be implemented as an independent embodiment, step S2109 can be implemented as an independent embodiment, step S2101 and step S2102 can be implemented as independent embodiments, step S2101 and step S2103 can be implemented as independent embodiments, step S2102 and step S2103 can be implemented as independent embodiments, step S2102 and step S2104 can be implemented as independent embodiments, step S2103 and step S2104 can be implemented as independent embodiments, step S2105 and step S2106 can be implemented as independent embodiments, but is not limited thereto.

In some embodiments, step S2101 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S2102 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S2103 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S2104 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S2105 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S2106 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S2107 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S2108 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S2109 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S2101 and step S2102 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S2102 and step S2103 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S2103 and step S2104 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S2105 and step S2106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S2107 and step S2108 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, reference may be made to other optional implementations recorded before or after the description corresponding to FIG. 2 .

FIG3A is a flow chart of a communication method according to an embodiment of the present disclosure, which is applied to a terminal. As shown in FIG3A , an embodiment of the present disclosure relates to a communication method, and the method includes:

Step S3101: The terminal sends third information to the network device.

The optional implementation of step S3101 can refer to the optional implementation of step S2101 in FIG. 2 and other related parts in the embodiment involved in FIG. 2 , which will not be described in detail here.

Step S3102: The terminal receives fourth information sent by the network device.

The optional implementation of step S3102 can refer to the optional implementation of step S2104 in FIG. 2 and the implementation involved in FIG. 2. Other related parts in the example will not be repeated here.

Step S3103: the terminal receives the first information sent by the network device.

The optional implementation of step S3103 can refer to the optional implementation of step S2106 in FIG2 and other related parts in the embodiment involved in FIG2 , which will not be described in detail here.

Step S3104: The terminal sends second information to the network device.

The optional implementation of step S3104 can refer to the optional implementation of step S2107 in FIG. 2 and other related parts in the embodiment involved in FIG. 2 , which will not be described in detail here.

Step S3105: The terminal switches to the first frequency band based on the first information.

The optional implementation of step S3105 can refer to the optional implementation of step S2109 in FIG. 2 and other related parts in the embodiment involved in FIG. 2 , which will not be described in detail here.

The communication method involved in the embodiment of the present disclosure may include at least one of steps S3101 to S3105. For example, step S3101 may be implemented as an independent embodiment, step S3102 may be implemented as an independent embodiment, step S3103 may be implemented as an independent embodiment, step S3104 may be implemented as an independent embodiment, and step S3105 may be implemented as an independent embodiment, but is not limited thereto.

In some embodiments, step S3101 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S3102 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S3103 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S3104 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, step S3105 is optional, and one or more of these steps may be omitted or replaced in different embodiments.

In some embodiments, reference may be made to other optional implementations recorded before or after the description corresponding to FIG. 2 .

FIG3B is a flow chart of a communication method according to an embodiment of the present disclosure, which is applied to a terminal. As shown in FIG3B , an embodiment of the present disclosure relates to a communication method, and the method includes:

Step S3201: The terminal receives the first information sent by the network device.

The optional implementation of step S3201 can refer to the optional implementation of step S2106 in Figure 2, the optional implementation of step S3102 in Figure 3, and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

FIG4A is a flow chart of a communication method according to an embodiment of the present disclosure, which is applied to a network device. As shown in FIG4A , an embodiment of the present disclosure relates to a communication method, and the method includes:

Step S4101: The network device receives the third information sent by the terminal.

The optional implementation of step S4101 can refer to step S2102 of FIG. 2 and other related parts of the embodiment involved in FIG. 2 , which will not be described in detail here.

Step S4102: The network device sends fourth information to the terminal.

The optional implementation of step S4102 can refer to step S2103 of FIG. 2 and other related parts of the embodiment involved in FIG. 2 , which will not be described in detail here.

Step S4103: The network device sends first information to the terminal.

The optional implementation of step S4103 can refer to step S2105 of FIG. 2 and other related parts of the embodiment involved in FIG. 2 , which will not be described in detail here.

Step S4104: the network device receives the second information sent by the terminal.

The optional implementation of step S4104 can refer to step S2108 in FIG. 2 and other related parts of the embodiment involved in FIG. 2 , which will not be described in detail here.

FIG4B is a flow chart of a communication method according to an embodiment of the present disclosure, which is applied to a network device. As shown in FIG4B , an embodiment of the present disclosure relates to a communication method, and the method includes:

Step S4201: The network device sends first information to the terminal.

The optional implementation of step S4201 can refer to step S2103 of FIG. 2 and other related parts of the embodiment involved in FIG. 2 , which will not be described in detail here.

In some embodiments, the first frequency band includes any one of a RB set or a BWP.

In some embodiments, the first information includes at least one of the following:

Cell ID;

a frequency band identifier of the first frequency band;

Spare padding bits;

feedback time of second information, where the second information refers to feedback information of the terminal to the first information;

A switching indication is used to instruct multiple terminals to perform switching.

In some embodiments, the method further comprises:

Receive third information sent by the terminal, where the third information is used to indicate whether the terminal supports frequency band switching for multiple terminals.

In some embodiments, the method further comprises:

Sending fourth information to the terminal, where the fourth information is used to indicate whether the cell corresponding to the network device supports frequency band switching for multiple terminals.

In some embodiments, the PDCCH carrying the first information is a group-common PDCCH.

In some embodiments, the first information is a group-common DCI.

In some embodiments, the PDCCH carrying the first information is sent on a common search space, and the search space type is Type3.

In some embodiments, the method further comprises:

Second information sent by the terminal is received, where the second information refers to feedback information of the terminal to the first information.

FIG5 is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG5 , the embodiment of the present disclosure relates to a communication method, and the method includes:

Step S5101: The network device sends first information to the terminal.

In some embodiments, the first information is used to instruct multiple terminals to switch to the first frequency band.

Step S5102: The terminal receives the first information sent by the network device.

The optional implementation of step S5101 can refer to step S2105 in FIG. 2 , step S4103 in FIG. 4A , and other related parts in the embodiments involved in FIG. 2 and FIG. 4A , which will not be described in detail here.

The optional implementation of step S5102 can refer to step S2106 of FIG. 2 , step S3103 of FIG. 3A , and other related parts of the embodiments involved in FIG. 2 and FIG. 3A , which will not be described in detail here.

In some embodiments, the above method may include the method of the above-mentioned communication system side, terminal side, network device side, etc., which will not be repeated here.

FIG6 is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG6 , the embodiment of the present disclosure relates to a communication method, and the method includes:

Step S6101: The base station instructs one or more terminals to switch to a specific frequency domain through group-common signaling.

In some embodiments, the frequency domain may be a RB set or a BWP, which is indicated by different frequency domain IDs. The frequency domain range corresponding to the specific frequency domain ID is configured through RRC signaling. For convenience, the following is written in terms of BWP ID.

In some embodiments, the current active BWP of UE#1 is BWP#1, and the current active BWP of UE#2 is BWP#2. UE#1 and UE#2 receive group-common signaling, and both UE#1 and UE#2 switch to BWP#0

In some embodiments, the bearer signaling can be group common DCI

In some embodiments, a specific BWP is indicated to the UE via a group-common DCI, which includes at least one of the following:

(1) Cell ID (corresponding to the cell ID in the above embodiment)

(2) BWP#ID (corresponding to the frequency band identifier of the first frequency band in the above embodiment)

(3) Spare/reserved padding bits to match the size configured for DCI 2_X (corresponding to the spare padding bits in the above embodiment)

In some embodiments, in order to reduce the complexity of terminal blind detection of PDCCH, spare/reserved padding bits are used, such as 0 bit, so that the payload size of multiple different DCI formats is the same.

(4) HARQ-feedback timing (corresponding to the feedback time of the second information in the above embodiment)

(5) Switching enable (corresponding to the switching indication in the above embodiment)

(6) Time-frequency resource information of HARQ-feedback (corresponding to the time-frequency resource information of the second information in the above embodiment).

In one embodiment, the DCI contains the cell ID and the target BWP ID.

In one embodiment, the base station first switches the active BWP of group UE (UE#1, UE#2) to BWP#1 of cell#1 through group-common DCI, and then switches group UE (UE#1, UE#2) to BWP#2 of cell#1 using group-common DCI after a period of time. The bandwidth of BWP#1 is smaller than that of BWP#2.

In one embodiment, the base station first switches the active BWP of group UE (UE#1, UE#2) to BWP#1 of cell#1 through group-common DCI, and after a period of time, uses UE-dedicated DCI, such as format 1-1, to switch UE#1 to BWP#2 of cell#1. The bandwidth of BWP#1 is smaller than that of BWP#2.

In one embodiment, the DCI contains the BWP ID

In one embodiment, the base station first switches the active BWP of the group UE (UE#1, UE#2) to BWP#1 through group-common DCI, and then switches the group UE (UE#1, UE#2) to BWP#2 using group-common DCI after a period of time. The bandwidth of BWP#1 is smaller than that of BWP#2.

In one embodiment, the base station first switches the active BWP of group UE (UE#1, UE#2) to BWP#1 through group-common DCI, and after a period of time, uses UE-dedicated DCI, such as format 1-1, to switch UE#1 to BWP#2, and the bandwidth of BWP#1 is smaller than that of BWP#2.

In one embodiment, the cell where the BWP is located is obtained through the PDCCH configuration information carrying the group common DCI.

In one embodiment, the DCI includes BWP switching enable information. The specific BWP ID is determined by predefined rules and/or configuration signaling before receiving the group-common DCI. That is, the group-common DCI only carries the switching instruction and does not provide the BWP information to switch to. After receiving the group-common DCI, the UE switches to the predefined or pre-configured BWP.

Optionally, the specified BWP is the initial BWP

Optionally, the specified BWP is the default BWP

Optionally, the specific BWP is firstActiveBWP

Optionally, the specific BWP is one of the regular BWPs, such as BWP#1.

In one embodiment, after receiving the group-common DCI, the UE behaves as follows:

● At least stop PDCCH monitoring, CSI-RS measurement, PDSCH reception, and SRS/PUCCH/PUSCH transmission on other BWPs except the BWP to which the group-common DCI indicates switching.

In one embodiment, the UE reports whether it supports group-common BWP Switching through its capabilities.

In one embodiment, the base station configures the UE through RRC signaling: whether a cell supports group-common BWP Switching.

In one embodiment, the RRC signaling includes the cell ID and whether group-common BWP Switching is enabled.

In one embodiment, when the UE supports group-common BWP Switching and the base station indicates that the cell can perform group-common BWP Switching, the UE monitors the group-common PDCCH on the Common search space (CSS), where the group-common PDCCH is used to carry the group-common DCI.

In one embodiment, the group-common DCI, e.g., DCI format 2_12, is scrambled with a special RNTI, such as group BWP-RNTI.

In one embodiment, the UE performs HARQ feedback for the group-common DCI.

In one embodiment, the UE feeds back the HARQ-ACK information after receiving the first time interval of the group-common DCI. The first time interval is a predefined value, and the first time interval has different predefined values according to different UE capabilities and/or different subcarrier spacings. (Note: It may be stated in the standard as: A UE is expected to provide HARQ-ACK information in response to a group-common BWP Switching after N symbols from the last symbol of a PDCCH providing the group-common BWP Switching)

In one embodiment, the UE feeds back the HARQ-ACK information after receiving the second time interval of the group-common DCI. The second time interval is the feedback time of the second information indicated in the group-common DCI. In one embodiment, the UE receives the group-common DCI in slot#n, where the timing indicated in the group-common DCI is 4, then the UE performs HARQ-ACK feedback in slot#n+4. That is, if the group-common DCI is demodulated correctly, ACK is reported, and if it is not demodulated, no feedback is given or NACK is fed back.

In one embodiment, if the base station enables the UE to perform HARQ feedback for the group-common DCI through RRC, the UE performs HARQ feedback for the group-common DCI.

In one embodiment, if the group-common DCI includes the feedback time of the second information and/or the time-frequency resource information of the second information, the UE performs HARQ-ACK feedback for the group-common DCI.

In the embodiments of the present disclosure, part or all of the steps and their optional implementations may be arbitrarily combined with part or all of the steps in other embodiments, or may be arbitrarily combined with optional implementations of other embodiments.

The embodiments of the present disclosure also propose a device for implementing any of the above methods, for example, a device is proposed, the above device includes a unit or module for implementing each step performed by the terminal in any of the above methods. For another example, another device is also proposed, including a unit or module for implementing each step performed by a network device (such as an access network device, a core network function node, a core network device, etc.) in any of the above methods.

It should be understood that the division of the units or modules in the above device is only a division of logical functions, which can be fully or partially integrated into one physical entity or physically separated in actual implementation. In addition, the units or modules in the device can be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and instructions are stored in the memory. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory inside the device or a memory outside the device. Alternatively, the units or modules in the device may be implemented in the form of hardware circuits, and the functions of some or all of the units or modules may be implemented by designing the hardware circuits. The hardware circuits may be understood as one or more processors; for example, in one implementation, the hardware circuits are application-specific integrated circuits (ASICs), and the functions of some or all of the above units or modules may be implemented by designing the logical relationship of the components in the circuits; for another example, in another implementation, the hardware circuits may be implemented by programmable logic devices (PLDs), and Field Programmable Gate Arrays (FPGAs) may be used as an example, which may include a large number of logic gate circuits, and the connection relationship between the logic gate circuits may be configured by configuring the configuration files, thereby implementing the functions of some or all of the above units or modules. All units or modules of the above devices may be implemented in the form of software called by the processor, or in the form of hardware circuits, or in the form of software called by the processor, and the remaining part may be implemented in the form of hardware circuits.

In the embodiments of the present disclosure, the processor is a circuit with signal processing capability. In one implementation, the processor may be a circuit with instruction reading and execution capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which may be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor may implement certain functions through the logical relationship of hardware circuits, and the logical relationship of the above hardware circuits may be fixed or reconfigurable, such as a processor being an application-specific integrated circuit (ASIC). A hardware circuit implemented by an ASIC (Integrated Circuit) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document to implement the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

FIG7A is a schematic diagram of the structure of a communication device proposed in an embodiment of the present disclosure. As shown in FIG7A , the communication device 7100 may include: at least one of a transceiver module 7101, a processing module 7102, etc. In some embodiments, the transceiver module 7101 is used to receive a first message sent by a network device, and the first message is used to instruct multiple terminals to switch to a first frequency band. Optionally, the transceiver module 7101 is used to execute at least one of the communication steps such as sending and/or receiving executed by the terminal in any of the above methods (for example, step S2101 but not limited to this), which will not be repeated here. Optionally, the processing module is used to execute at least one of the other steps executed by the terminal in any of the above methods, which will not be repeated here.

Optionally, the processing module 7102 is used to execute at least one of the communication steps such as processing performed by the terminal in any of the above methods, which will not be repeated here.

In some embodiments, the first frequency band includes any one of a RB set or a BWP.

In some embodiments, the first information includes at least one of the following:

Cell ID;

a frequency band identifier of the first frequency band;

Spare padding bits;

feedback time of second information, where the second information refers to feedback information of the terminal to the first information;

time-frequency resource information of the second information;

A switching indication is used to instruct multiple terminals to perform switching.

In some embodiments, the processing module 7102 is further configured to switch to the first frequency band based on the first information.

In some embodiments, the processing module 7102 is further used to:

Stop at least one of the following actions on frequency bands other than the first frequency band:

PDCCH monitoring;

CSI-RS measurement;

PDSCH reception;

At least one of SRS, PUCCH or PUSCH is transmitted.

In some embodiments, the processing module 7102 is further used to:

Perform at least one of the following actions on the first frequency band:

PDCCH monitoring;

CSI-RS measurement;

PDSCH reception;

At least one of SRS, PUCCH or PUSCH is transmitted.

In some embodiments, the transceiver module 7101 is further used to send third information to the network device, where the third information is used to indicate whether the terminal supports frequency band switching for multiple terminals.

In some embodiments, the transceiver module 7101 is further used to receive fourth information sent by the network device, where the fourth information is used to indicate whether the cell corresponding to the network device supports frequency band switching for multiple terminals.

In some embodiments, the processing module 7101 is further used to monitor the PDCCH carrying the first information when the terminal supports frequency band switching for multiple terminals and the cell corresponding to the network device supports frequency band switching for multiple terminals.

In some embodiments, the PDCCH carrying the first information is a group-common PDCCH.

In some embodiments, the first information is a group-common DCI.

In some embodiments, the PDCCH carrying the first information is sent on a common search space, and the search space type is Type3.

In some embodiments, the transceiver module 7101 is further used to send second information to the network device, where the second information refers to feedback information from the terminal to the first information.

FIG7B is a schematic diagram of the structure of a communication device proposed in an embodiment of the present disclosure. As shown in FIG7B , the communication device 7200 may include: at least one of a transceiver module 7201, a processing module 7202, etc. In some embodiments, the transceiver module 7201 is used to send a first message to a terminal, and the first message is used to instruct multiple terminals to switch to a first frequency band. Optionally, the above-mentioned transceiver module is used to perform at least one of the communication steps such as sending and/or receiving performed by the network device in any of the above methods (such as step S2102 but not limited thereto), which will not be repeated here.

Optionally, the processing module 7202 is used to execute at least one of the communication steps such as processing performed by the network device in any of the above methods, which will not be repeated here.

In some embodiments, the first frequency band includes any one of a RB set or a BWP.

In some embodiments, the first information includes at least one of the following:

Cell ID;

a frequency band identifier of the first frequency band;

Spare padding bits;

feedback time of second information, where the second information refers to feedback information of the terminal to the first information;

time-frequency resource information of the second information;

A switching indication is used to instruct multiple terminals to perform switching.

In some embodiments, the transceiver module 7201 is used to receive third information sent by the terminal, and the third information is used to indicate whether the terminal supports frequency band switching for multiple terminals.

In some embodiments, the transceiver module 7201 is used to send fourth information to the terminal, and the fourth information is used to indicate whether the cell corresponding to the network device supports frequency band switching for multiple terminals.

In some embodiments, the PDCCH carrying the first information is a group-common PDCCH.

In some embodiments, the first information is a group-common DCI.

In some embodiments, the PDCCH carrying the first information is sent on a common search space, and the search space type is Type3.

In some embodiments, the transceiver module 7201 is used to receive second information sent by the terminal, where the second information refers to feedback information of the terminal to the first information.

In some embodiments, the transceiver module may include a sending module and/or a receiving module, and the sending module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

In some embodiments, the processing module can be a module or include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be replaced with the processor.

FIG8A is a schematic diagram of the structure of a communication device 8100 proposed in an embodiment of the present disclosure. The communication device 8100 may be a network device (e.g., an access network device, a core network device, etc.), or a terminal, or a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. The communication device 8100 may be used to implement the method described in the above method embodiment, and the details may refer to the description in the above method embodiment.

As shown in FIG8A , the communication device 8100 includes one or more processors 8101. The processor 8101 may be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor may be used to process the communication protocol and the communication data, and the central processing unit may be used to control the communication device (such as a base station, a baseband chip, a terminal, a terminal chip, a DU or a CU, etc.), execute a program, and process the data of the program. The communication device 8100 is used to execute any of the above methods.

In some embodiments, the communication device 8100 further includes one or more memories 8102 for storing instructions. Optionally, all or part of the memory 8102 may also be outside the communication device 8100.

In some embodiments, the communication device 8100 further includes one or more transceivers 8103. When the communication device 8100 includes one or more transceivers 8103, the transceiver 8103 performs at least one of the communication steps such as sending and/or receiving in the above method (for example, step S2101, step S2102, step S2103, step S2104, but not limited thereto).

In some embodiments, the transceiver may include a receiver and/or a transmitter, and the receiver and the transmitter may be separate or integrated. Optionally, the terms such as transceiver, transceiver unit, transceiver, transceiver circuit, etc. may be replaced with each other, the terms such as transmitter, transmission unit, transmitter, transmission circuit, etc. may be replaced with each other, and the terms such as receiver, receiving unit, receiver, receiving circuit, etc. may be replaced with each other.

In some embodiments, the communication device 8100 may include one or more interface circuits 8104. Optionally, the interface circuit 8104 is connected to the memory 8102, and the interface circuit 8104 may be used to receive signals from the memory 8102 or other devices, and may be used to send signals to the memory 8102 or other devices. For example, the interface circuit 8104 may read instructions stored in the memory 8102 and send the instructions to the processor 8101.

The communication device 8100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 8100 described in the present disclosure is not limited thereto, and the structure of the communication device 8100 may not be limited by FIG. 8A. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal, a smart terminal, a cellular phone, a wireless device, a handheld device, a mobile unit, a vehicle-mounted device, a network device, a cloud device, Artificial intelligence equipment, etc.; (6) Others, etc.

8B is a schematic diagram of the structure of a chip 8200 provided in an embodiment of the present disclosure. In the case where the communication device 8100 may be a chip or a chip system, reference may be made to the schematic diagram of the structure of the chip 8200 shown in FIG8B , but the present disclosure is not limited thereto.

The chip 8200 includes one or more processors 8201, and the chip 8200 is used to execute any of the above methods.

In some embodiments, the chip 8200 further includes one or more interface circuits 8202. Optionally, the interface circuit 8202 is connected to the memory 8203. The interface circuit 8202 can be used to receive signals from the memory 8203 or other devices, and the interface circuit 8202 can be used to send signals to the memory 8203 or other devices. For example, the interface circuit 8202 can read instructions stored in the memory 8203 and send the instructions to the processor 8201.

In some embodiments, the interface circuit 8202 performs at least one of the communication steps such as sending and/or receiving in the above method, and the processor 8201 performs at least one of the other steps.

In some embodiments, terms such as interface circuit, interface, transceiver pin, and transceiver may be used interchangeably.

In some embodiments, the chip 8200 further includes one or more memories 8203 for storing instructions. Optionally, all or part of the memory 8203 may be outside the chip 8200.

The present disclosure also proposes a storage medium, on which instructions are stored, and when the instructions are executed on the communication device 8100, the communication device 8100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited to this, and it can also be a storage medium readable by other devices. Optionally, the storage medium can be a non-transitory storage medium, but is not limited to this, and it can also be a temporary storage medium.

The present disclosure also proposes a program product, which, when executed by the communication device 8100, enables the communication device 8100 to execute any of the above methods. Optionally, the program product is a computer program product.

The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to execute any one of the above methods.

Claims (29)

A communication method, characterized in that the method is executed by a terminal, and the method comprises: First information sent by a network device is received, where the first information is used to instruct multiple terminals to switch to a first frequency band. The method according to claim 1 is characterized in that the first frequency band includes any one of a radio bearer RB set or a bandwidth part BWP. The method according to claim 1 or 2, characterized in that the first information includes at least one of the following: Cell ID; a frequency band identifier of the first frequency band; Spare padding bits; feedback time of second information, where the second information refers to feedback information of the terminal to the first information; time-frequency resource information of the second information; A switching indication is used to instruct multiple terminals to perform switching. The method according to any one of claims 1 to 3, characterized in that the method further comprises: Switch to the first frequency band based on the first information. The method according to claim 4, characterized in that the method further comprises: Stop at least one of the following actions on frequency bands other than the first frequency band: Physical downlink control channel PDCCH monitoring; Channel state information reference signal CSI-RS measurement; Physical downlink shared channel PDSCH reception; At least one of a sounding reference signal SRS, a physical uplink control channel PUCCH, or a physical uplink shared channel PUSCH is sent. The method according to claim 4, characterized in that the method further comprises: Perform at least one of the following actions on the first frequency band: PDCCH monitoring; CSI-RS measurement; PDSCH reception; At least one of SRS, PUCCH or PUSCH is transmitted. The method according to any one of claims 1 to 6, characterized in that the method further comprises: Sending third information to the network device, where the third information is used to indicate whether the terminal supports frequency band switching for multiple terminals. The method according to any one of claims 1 to 7, characterized in that the method further comprises: Receive fourth information sent by the network device, where the fourth information is used to indicate whether a cell corresponding to the network device supports frequency band switching for multiple terminals. The method according to any one of claims 1 to 8, characterized in that the method further comprises: In a case where the terminal supports frequency band switching for multiple terminals and the cell corresponding to the network device supports frequency band switching for multiple terminals, a PDCCH carrying the first information is monitored. The method according to any one of claims 1 to 9 is characterized in that the PDCCH carrying the first information is a group-common physical downlink control channel PDCCH. The method according to any one of claims 1 to 10 is characterized in that the first information is common group downlink control information group-common DCI. The method according to any one of claims 1 to 11 is characterized in that the PDCCH carrying the first information is sent on a common search space, and the search space type is Type 3. The method according to any one of claims 1 to 12, characterized in that the method further comprises: Sending second information to the network device, where the second information refers to feedback information of the terminal to the first information. A communication method, characterized in that the method is executed by a terminal, and the method comprises: First information is sent to a terminal, where the first information is used to instruct multiple terminals to switch to a first frequency band. The method according to claim 14 is characterized in that the first frequency band includes any one of a RB set or a BWP. The method according to claim 14 or 15, characterized in that the first information includes at least one of the following: Cell ID; a frequency band identifier of the first frequency band; Spare padding bits; feedback time of second information, where the second information refers to feedback information of the terminal to the first information; time-frequency resource information of the second information; A switching indication is used to instruct multiple terminals to perform switching. The method according to any one of claims 14 to 16, characterized in that the method further comprises: Receive third information sent by the terminal, where the third information is used to indicate whether the terminal supports frequency band switching for multiple terminals. The method according to any one of claims 14 to 17, characterized in that the method further comprises: Sending fourth information to the terminal, where the fourth information is used to indicate whether the cell corresponding to the network device supports frequency band switching for multiple terminals. The method according to any one of claims 14 to 18 is characterized in that the PDCCH carrying the first information is a group-common PDCCH. The method according to any one of claims 14 to 19 is characterized in that the first information is group-common DCI. The method according to any one of claims 14 to 20 is characterized in that the PDCCH carrying the first information is sent on a common search space, and the search space type is Type 3. The method according to any one of claims 14 to 21, characterized in that the method further comprises: Second information sent by the terminal is received, where the second information refers to feedback information of the terminal to the first information. A communication method, characterized in that the method comprises: The network device sends first information to the terminal, where the first information is used to instruct multiple terminals to switch to the first frequency band; The terminal receives first information sent by the network device. A communication device, characterized in that the communication device comprises: The transceiver module is used to receive first information sent by a network device, where the first information is used to instruct multiple terminals to switch to a first frequency band. A communication device, characterized in that the communication device comprises: The transceiver module is used to send first information to the terminal, where the first information is used to instruct multiple terminals to switch to the first frequency band. A communication device, characterized in that the communication device comprises: one or more processors; The processor is used to execute the communication method according to any one of claims 1 to 13. A communication device, characterized in that the communication device comprises: one or more processors; The processor is used to execute the communication method described in any one of claims 14 to 22. A communication system, characterized in that it includes a terminal and a network device, wherein the terminal is configured to implement the communication method described in any one of claims 1 to 13, and the network device is configured to implement the communication method described in any one of claims 14 to 22. A storage medium storing instructions, characterized in that when the instructions are executed on a communication device, the communication device executes the communication method as described in any one of claims 1 to 13, or executes the communication method as described in any one of claims 14 to 22.