CN115460585A

CN115460585A - Communication method and device

Info

Publication number: CN115460585A
Application number: CN202110639362.5A
Authority: CN
Inventors: 薛松岩; 骆喆; 李新县
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-06-08
Filing date: 2021-06-08
Publication date: 2022-12-09
Also published as: WO2022257646A1

Abstract

A communication method and device, the method includes: the method comprises the steps that a terminal device determines a first mode in at least one mode, wherein the at least one mode comprises a broadband mode, and the broadband mode comprises the terminal device supporting communication of a single-antenna discontinuous spectrum; and the terminal equipment sends first indication information to network equipment, wherein the first indication information is used for indicating the first mode. By adopting the method and the device of the embodiment of the application, the terminal equipment can report the mode adopted by the terminal equipment in resource aggregation to the network equipment.

Description

Communication method and device

Technical Field

The embodiment of the application relates to the technical field of communication, in particular to a communication method and device.

Background

With increasing network capacity demands, frequency Division Duplex (FDD) spectrum resource aggregation becomes more and more important. Compared with the higher frequency band in the existing commercial frequency band, the medium-low frequency FDD frequency spectrum can provide better coverage. From the perspective of an operator, although the total bandwidth of the medium-low frequency FDD spectrum resources is large, most of the medium-low frequency FDD spectrum resources are distributed discretely in multiple frequency bands. Therefore, there is a need for operators to aggregate FDD scattered bands. How to aggregate spectrum resources of different frequency bands is a problem to be solved by the embodiments of the present application.

Disclosure of Invention

The embodiment of the application provides a communication method and device, so as to realize aggregation of spectrum resources of different frequency bands.

In a first aspect, a communication method is provided, including: the method comprises the steps that a terminal device determines a first mode in at least one mode, wherein the at least one mode comprises a broadband mode, and the broadband mode comprises the terminal device supporting communication of a single-antenna discontinuous spectrum; the terminal equipment sends first indication information to network equipment, and the first indication information is used for indicating the first mode.

By the method, the terminal equipment can select the first mode from at least one mode according to the hardware capability of the terminal equipment and report the first mode to the network equipment, so that the network equipment can know the mode supported by the terminal equipment, and the terminal equipment can be conveniently configured with a reasonable mode.

In one possible design, the wideband mode includes wideband transmission, the wideband transmission includes transmission in which the terminal device supports a single-antenna discontinuous spectrum, and the maximum uplink transmission power supported by the terminal device in the wideband transmission is a first value. Optionally, the first value is less than or equal to an uplink maximum transmission power supported by the terminal device in a narrow-band mode.

In one possible design, the wideband mode includes wideband burst transmission, the wideband burst transmission includes burst transmission in which the terminal device supports a single-antenna discontinuous spectrum, and the maximum uplink instantaneous transmit power of the terminal device in the wideband burst transmission is a second value, and the second value is greater than the first value.

In one possible design, the wideband mode further includes: and receiving broadband, wherein the receiving broadband comprises receiving the single-antenna non-connection frequency spectrum supported by the terminal equipment.

In one possible design, the at least one mode further includes: a narrowband mode comprising communication that the terminal device supports a single antenna continuous spectrum.

In one possible design, after the terminal device sends the first indication information to the network device, the method further includes:

the terminal device receives configuration information from the network device, wherein the configuration information is used for configuring a second mode of the terminal device to work in the at least one mode, and the second mode is the same as or different from the first mode; and the terminal equipment works in the second mode according to the configuration information.

Through the design, the terminal equipment can report the supported modes to the network equipment, and the network equipment configures the proper modes for the terminal equipment according to the condition of the time-frequency resources. Optionally, the configuration information sent by the network device to the terminal device may include a power value of the corresponding mode, where the power value is smaller than the maximum successful transmit power supported by the UE in the mode.

In one possible design, further comprising: and the terminal equipment is switched to a third mode in the at least one mode from the second mode.

In one possible design, the method further comprises: and the terminal equipment receives a notification message from the network equipment, wherein the notification message is used for indicating the terminal equipment to switch to the third mode and/or activating the third mode.

Through the design, the UE can be switched among different modes in at least one mode, and the switching requirements of the different modes are met.

In a possible design, the notification message is downlink control information DCI, and the terminal device determines the third mode according to a frequency domain resource allocation indication of the DCI.

Through the design, the mode to be switched of the UE can be indicated through DCI implicit indication without signaling indication in the DCI, and the signaling overhead of the DCI is saved.

In a second aspect, a communication method is provided, including: the network equipment receives first indication information from the terminal equipment; the first indication information is used for indicating a first mode in at least one mode, the at least one mode includes a wideband mode, and the wideband mode includes that the terminal device supports communication of a single-antenna discontinuous spectrum.

Through the design, the network equipment can acquire the capabilities of the terminal equipment in different modes, and subsequently, the network equipment can configure a proper mode for the terminal equipment according to the capabilities reported by the terminal equipment.

In one possible design, the wideband mode includes wideband transmission, the wideband transmission includes transmission in which the terminal device supports a single-antenna discontinuous spectrum, and the maximum uplink transmission power supported by the terminal device in the wideband transmission is a first value.

In one possible design, the first value is equal to or less than an uplink maximum transmit power supported by the terminal device in the narrow-band mode.

In one possible design, the wideband mode further includes: and receiving the broadband, wherein the receiving of the broadband comprises that the terminal equipment supports the receiving of the single-antenna discontinuous spectrum.

In one possible design, after the network device sends the first indication information to the terminal device, the method further includes: and the network equipment sends configuration information to the terminal equipment, wherein the configuration information is used for configuring a second mode of the terminal equipment in the at least one mode, and the second mode is the same as or different from the first mode.

In one possible design, further comprising: and the network equipment sends a notification message to the terminal equipment, wherein the notification message is used for instructing the terminal equipment to switch to a third mode in the at least one transmission mode and/or activating the third mode.

In one possible design, the notification message is downlink control information DCI, and the frequency domain resource allocation indicator of the DCI is used to indicate the third mode.

In a third aspect, a communication method is provided, including: the terminal device may perform uplink transmission and/or downlink transmission with the network device using the serving cell. The serving cell is formed by aggregating spectrum resources of the same or different frequency bands.

By means of the design, the frequency spectrum resources of the same or different frequency bands can be aggregated into one service cell, the subsequent terminal equipment and the network equipment communicate by using the service cell, the aggregated frequency spectrum resources can be used for data transmission in real time, and the utilization rate of the frequency spectrum resources is improved.

In one possible design, the serving cell includes multiple carriers including one or more uplink carriers and/or one or more downlink carriers. The one or more uplink carriers are on one or more frequency bands, the one or more downlink carriers are on one or more frequency bands, and the like, without limitation.

In one possible design, at least one downlink carrier of the plurality of downlink carriers within the serving cell may be a preset type of signal, the preset type of signal including at least one of: common frequency signal block SSB, remaining minimum system message RMSI, other system messages OSI, paging messages, tracking reference signal TRS, channel state information reference signal CSI-RS for radio resource management measurement, or random access response RAR, etc.

In one possible design, the maximum active number of the downlink fractional bandwidths BWPs of the serving cell is one, the number of the downlink BWPs configured at maximum on each downlink carrier is 1, and the number of the BWPs configured at maximum in the serving cell is the same as the number of the downlink carriers in the serving cell.

In another possible design, the maximum active number of downlink BWPs of the serving cell is one, and the maximum configured number of downlink BWPs on each downlink carrier is greater than or equal to 1, for example, may be 4.

In another possible design, the maximum number of active downlink BWPs in the serving cell is N, where N is greater than or equal to 1, and may be the same as or different from the number of downlink carriers in the serving cell. The maximum configured downlink BWP number on each downlink carrier is greater than or equal to one, for example, 4, and the maximum configured BWP number in the serving cell is 4 × M, where M is the number of downlink carriers in the serving cell.

In one possible design, 1 default downlink BWP is configured on each downlink carrier, and the base station indicates the activated carrier of the terminal device through one or more carrier identifiers, and the default downlink BWP corresponding to the activated carrier is activated at the same time.

In one possible design, the base station instructs the terminal device to switch the activated downlink BWP or the combination of downlink BWPs and the corresponding downlink carrier to another downlink BWP or the combination of downlink BWPs and the corresponding downlink carrier. There may be one or more downlink BWPs and corresponding downlink carriers that are active both before and after the handover.

Optionally, the description of the upstream BWP is similar to that of the downstream BWP, and is not repeated here.

In one possible design, the same time domain synchronization information and/or frequency domain synchronization information is shared among different carriers within the serving cell. Optionally, at least one of the following is also shared: the same path loss, reference signal received power, or quasi co-location information. Or the difference value between predefined types of information among different carriers in the serving cell can be notified through predefinition or information, and the predefined types of information include at least one of the following: time domain synchronization information, frequency domain synchronization information, path loss, reference signal received power, or quasi co-location information, etc. The combination of frequency bands in the serving cell may be predefined or reported by the terminal device.

In one possible design, when a new BWP and a corresponding carrier are activated, the terminal device may use one or more of time domain synchronization information and/or frequency domain synchronization information, path loss, reference signal received power, or quasi co-location information of other BWPs and corresponding carriers that have been activated, without performing measurement on the newly activated BWP and corresponding carrier.

In a fourth aspect, a communication method is provided, including: the network device may utilize the serving cell to perform uplink transmission and/or downlink transmission with the terminal device. The serving cell is formed by aggregating spectrum resources of the same or different frequency bands.

In one possible design, at least one downlink carrier of the plurality of downlink carriers within the serving cell may be a preset type of signal, the preset type of signal including at least one of: a common frequency signal block SSB, a residual minimum system message RMSI, other system messages OSI, a paging message, a tracking reference signal TRS, a channel state information reference signal CSI-RS for radio resource management measurement, or a random access response RAR, etc.

In one possible design, the maximum active number of the downlink fractional bandwidth BWPs of the serving cell is one, the number of the downlink BWPs configured to the maximum on each downlink carrier is 1, and the number of the BWPs configured to the maximum in the serving cell is the same as the number of the downlink carriers in the serving cell.

In another possible design, the maximum active number of downlink BWPs in the serving cell is N, where N is greater than or equal to 1, and may be the same as or different from the number of downlink carriers in the serving cell. The maximum configured number of downlink BWPs on each downlink carrier is greater than or equal to one, for example, 4, and the maximum configured number of BWPs in the serving cell is 4 × M, where M is the number of downlink carriers in the serving cell.

In one possible design, 1 default downlink BWP is configured on each downlink carrier, and the base station indicates the activated carrier of the terminal device through one or more carrier identifiers, and meanwhile, the default downlink BWP corresponding to the activated carrier is activated.

In a fifth aspect, a communication device is provided, which is configured to implement the method of the first aspect or the third aspect, and includes corresponding functional modules or units, which are respectively configured to implement the steps in the method of the first aspect or the third aspect. The functions can be realized by hardware, and corresponding software can be executed by hardware, and the hardware or the software comprises one or more modules or units corresponding to the functions.

A sixth aspect provides a communications apparatus that includes a processor and a memory. Wherein the memory is used for storing computer programs or instructions, and the processor is coupled with the memory; the computer program or instructions, when executed by a processor, cause the apparatus to perform the method of the first or third aspect described above.

In a seventh aspect, a communication device is provided, which is configured to implement the method of the second or fourth aspect, and includes corresponding functional modules or units, which are configured to implement the steps in the method of the second or fourth aspect, respectively. The functions may be implemented by hardware, or by hardware executing corresponding software, and the hardware or software includes one or more modules or units corresponding to the functions.

In an eighth aspect, a communications apparatus is provided that includes a processor and a memory. Wherein the memory is used for storing computer programs or instructions, and the processor is coupled with the memory; the computer program or instructions, when executed by a processor, cause the apparatus to perform the method of the second or fourth aspect.

In a ninth aspect, there is provided a computer readable storage medium having stored therein a computer program or instructions which, when executed by an apparatus, cause the apparatus to perform the method of the first or third aspect.

In a tenth aspect, there is provided a computer readable storage medium having stored therein a computer program or instructions which, when executed by an apparatus, cause the apparatus to perform the method of the second or fourth aspect.

In an eleventh aspect, there is provided a computer program product comprising a computer program or instructions which, when executed by an apparatus, cause the apparatus to perform the method of the first or third aspect.

In a twelfth aspect, there is provided a computer program product comprising a computer program or instructions which, when executed by an apparatus, cause the apparatus to perform the method of the second or fourth aspect.

In a thirteenth aspect, there is provided a system comprising the apparatus of the fifth or sixth aspect above, and the apparatus of the seventh or eighth aspect.

Drawings

Fig. 1 is a schematic diagram of a network architecture provided in an embodiment of the present application;

fig. 2a to fig. 2d are schematic diagrams of a protocol stack provided in the embodiment of the present application;

fig. 3 is a schematic diagram of a narrowband mode provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of a broadband mode provided by an embodiment of the present application;

fig. 5 is a flowchart of a communication method provided in an embodiment of the present application;

FIG. 6 is a schematic diagram of a wideband burst mode according to an embodiment of the present application;

FIG. 7 is a schematic view of an apparatus provided by an embodiment of the present application;

fig. 8 is a schematic diagram of a terminal device provided in an embodiment of the present application;

fig. 9 is a schematic diagram of a network device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

Fig. 1 is a schematic diagram of a network architecture applicable to the embodiment of the present application. As shown in fig. 1, a terminal device, such as terminal device 1301 or terminal device 1302, may access a wireless network to obtain services of an external network (e.g., the internet) through the wireless network or to communicate with other devices through the wireless network, such as may communicate with other terminal devices. The wireless network includes a Radio Access Network (RAN) and a Core Network (CN), where the RAN is configured to access a terminal device to the wireless network, and the CN is configured to manage the terminal device and provide a gateway for communicating with an external network.

The terminal device, RAN and CN in fig. 1 will be described in detail below.

1. Terminal device

The terminal device may be referred to as a terminal for short, and is a device with a wireless transceiving function. The terminal device may be mobile or stationary. The terminal equipment can be deployed on land, including indoors or outdoors, and is handheld or vehicle-mounted; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). The terminal device may be a mobile phone (mobile phone), a tablet computer (pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in self driving (self driving), a wireless terminal device in remote medical treatment (remote medical), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in smart city (smart city), and/or a wireless terminal device in smart home (smart home). The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device or a computing device with wireless communication function, a vehicle-mounted device, a wearable device, a terminal device in a fifth generation (the 5 g) network in the future, or a terminal device in a Public Land Mobile Network (PLMN) in the future, and the like. A terminal device may also sometimes be referred to as a User Equipment (UE). Optionally, the terminal device may communicate with multiple access network devices of different technologies, for example, the terminal device may communicate with an access network device supporting Long Term Evolution (LTE), may also communicate with an access network device supporting 5G, and may also perform dual connectivity with the access network device supporting LTE and the access network device supporting 5G. The embodiments of the present application are not limited.

In the embodiment of the present application, the apparatus for implementing the function of the terminal device may be the terminal device; it may also be a device capable of supporting the terminal device to implement the function, such as a chip system, a hardware circuit, a software module, or a hardware circuit plus a software module, and the device may be installed in the terminal device or may be used in cooperation with the terminal device. In the technical solution provided in the embodiment of the present application, a device for implementing a function of a terminal device is a terminal device, and the terminal device is a UE as an example, and the technical solution provided in the embodiment of the present application is described.

2.RAN (radio Access network)

The RAN may include one or more RAN devices, such as RAN device 1101, RAN device 1102. The interface between the RAN device and the terminal device may be a Uu interface (or referred to as an air interface). The names of these interfaces may be unchanged or replaced by other names in future communications, and the present application is not limited thereto.

The RAN device, which may also be referred to as a network device or a base station, may be a node or device that accesses the terminal device to the wireless network. RAN equipment includes, for example but not limited to: a base station, a next generation node B (gbb) in 5G, an evolved node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., home evolved node B, or home node B, HNB), a Base Band Unit (BBU), a transceiving point (TRP), a Transmitting Point (TP), and/or a mobile switching center, etc. Alternatively, the access network device may also be at least one of a wireless controller, a Centralized Unit (CU), a Distributed Unit (DU), a centralized unit control plane (CU-CP) node, a centralized unit user plane (CU-UP) node, or an Integrated Access and Backhaul (IAB) in a Cloud Radio Access Network (CRAN) scenario. Alternatively, the access network device may be a relay station, an access point, a vehicle-mounted device, a terminal device, a wearable device, an access network device in a future 5G network, or an access network device in a Public Land Mobile Network (PLMN) for future evolution, and the like.

In this embodiment of the present application, the apparatus for implementing the function of the access network device may be an access network device; or may be a device capable of supporting the access network equipment to implement the function, such as a chip system, a hardware circuit, a software module, or a hardware circuit plus a software module, which may be installed in the access network equipment or may be used in cooperation with the access network equipment. In the embodiment of the present application, the chip system may be formed by a chip, and may also include a chip and other discrete devices. In the technical solution provided in the embodiment of the present application, an example in which a device for implementing a function of an access network device is an access network device and the access network device is a base station is taken to describe the technical solution provided in the embodiment of the present application.

(1) Protocol layer structure

The communication between the RAN equipment and the terminal equipment follows a certain protocol layer structure. The protocol layer structures may include a control plane protocol layer structure and a user plane protocol layer structure. For example, the control plane protocol layer structure may include functions of protocol layers such as a Radio Resource Control (RRC) layer, a Packet Data Convergence Protocol (PDCP) layer, a Radio Link Control (RLC) layer, a Medium Access Control (MAC) layer, and a physical layer. For example, the user plane protocol layer structure may include functions of protocol layers such as a PDCP layer, an RLC layer, a MAC layer, and a physical layer, and in a possible implementation, a Service Data Adaptation Protocol (SDAP) layer may be further included above the PDCP layer.

Taking the structure of the user plane protocol layer as an example, the SDAP layer is used to map data transmitted on a quality of service flow (Qos flow) to a Radio Bearer (RB) for transmission. The PDCP layer is used to perform user plane security protection. Such as encryption protection and/or integrity protection, etc. The RLC layer is responsible for error repair and flow control. The MAC layer is responsible for controlling and interfacing with the physical medium of the physical layer. For example, when transmitting a packet, the MAC layer may determine in advance whether the packet can be transmitted, and if the packet can be transmitted, add some control information to the packet, and finally transmit the packet and the control information to the PHY layer in a predetermined format. The PHY layer is used to serve bits or groups of bits transmitted between the UE and the base station.

Taking data transmission between a network device and a terminal device as an example, the data transmission needs to pass through a user plane protocol layer, such as an SDAP layer, a PDCP layer, an RLC layer, an MAC layer, and a physical layer. The SDAP layer, the PDCP layer, the RLC layer, the MAC layer, and the physical layer may also be collectively referred to as an access layer. The data transmission method is divided into transmission and reception according to the data transmission direction, and each layer is divided into a transmission part and a reception part. For downlink data transmission as an example, referring to fig. 2a, a schematic diagram of transmission of downlink data among layers is shown, in fig. 2a, a downward arrow indicates data transmission, and an upward arrow indicates data reception. After the PDCP layer obtains data from an upper layer, the PDCP layer transmits the data to the RLC layer and the MAC layer, and the MAC layer generates a transport block and performs radio transmission through a physical layer. And correspondingly encapsulating the data in each layer. For example, data received by a layer from an upper layer of the layer is regarded as a Service Data Unit (SDU) of the layer, and the SDU is encapsulated by the layer to form a Protocol Data Unit (PDU), and then is transmitted to a next layer.

Illustratively, as can also be seen from fig. 2a, the terminal device may also have an application layer and a non-access layer. The application layer may be configured to provide services to an application program installed in the terminal device, for example, downlink data received by the terminal device may be sequentially transmitted to the application layer by the physical layer, and then provided to the application program by the application layer; for another example, the application layer may obtain data generated by the application program, and sequentially transfer the data to the physical layer to be sent to other communication devices. The non-access stratum may be used to forward user data, such as to forward upstream data received from the application layer to the SDAP layer or to forward downstream data received from the SDAP layer to the application layer.

(2) Centralized Unit (CU) and Distributed Unit (DU)

In the embodiment of the present application, the RAN device may include a CU and a DU. Multiple DUs can be centrally controlled by one CU. As an example, the interface between a CU and a DU may be referred to as an F1 interface. Wherein, the Control Plane (CP) interface can be F1-C, and the User Plane (UP) interface can be F1-U. CUs and DUs can be divided according to the protocol layers of the wireless network: for example, as shown in fig. 2b, the functions of the PDCP layer and the above protocol layers are set in the CU, and the functions of the PDCP layer and the below protocol layers (e.g., the RLC layer and the MAC layer, etc.) are set in the DU; as shown in fig. 2c, the PDCP layer has functions of the upper protocol layer in the CU, and the PDCP layer and the lower protocol layer in the DU.

It is understood that the above-mentioned division of the processing functions of the CUs and the DUs according to the protocol layers is only an example, and the division may also be performed in other manners, for example, the CUs or the DUs may be divided into functions having more protocol layers, and for example, the CUs or the DUs may also be divided into partial processing functions having protocol layers. In one possible design, some of the functions of the RLC layer and the functions of the protocol layers above the RLC layer are set in the CU, and the remaining functions of the RLC layer and the functions of the protocol layers below the RLC layer are set in the DU. In another design, the functions of the CU or the DU may also be divided according to the service type or other system requirements, for example, divided by time delay, and the function that processing time needs to meet the delay requirement is set in the DU, and the function that does not need to meet the delay requirement is set in the CU. In another design, a CU may also have one or more functions of the core network. Illustratively, the CUs may be located on the network side to facilitate centralized management. In another design, a Radio Unit (RU) of the DU is set to zoom out. Wherein, the RU has a radio frequency function.

Alternatively, the DU and RU may be divided at a physical layer (PHY). For example, a DU may implement higher layer functions in the PHY layer, and an RU may implement lower layer functions in the PHY layer. The PHY layer functions may include, for transmitting, adding Cyclic Redundancy Check (CRC) codes, channel coding, rate matching, scrambling, modulation, layer mapping, precoding, resource mapping, physical antenna mapping, and/or radio frequency transmission functions, among others. For reception, the PHY layer functions may include CRC, channel decoding, de-rate matching, descrambling, demodulation, de-layer mapping, channel detection, resource de-mapping, physical antenna de-mapping, and/or radio frequency reception functions. The higher layer function in the PHY layer may include a part of the function of the PHY layer, for example, the part of the function is closer to the MAC layer, and the lower layer function in the PHY layer may include another part of the function of the PHY layer, for example, the part of the function is closer to the rf function. For example, higher layer functions in the PHY layer may include adding CRC codes, channel coding, rate matching, scrambling, modulation, and layer mapping, and lower layer functions in the PHY layer may include precoding, resource mapping, physical antenna mapping, and radio frequency transmission functions; alternatively, higher layer functions in the PHY layer may include adding CRC codes, channel coding, rate matching, scrambling, modulation, layer mapping, and precoding, and lower layer functions in the PHY layer may include resource mapping, physical antenna mapping, and radio frequency transmission functions.

Illustratively, the functionality of a CU may be implemented by one entity, or by different entities. For example, as shown in fig. 2d, the functionality of the CU may be further divided, i.e. the control plane and the user plane are separated and implemented by different entities, respectively a control plane CU entity (i.e. CU-CP entity) and a user plane CU entity (i.e. CU-UP entity). The CU-CP entity and CU-UP entity may be coupled to the DU to collectively perform the functions of the RAN device.

It should be noted that: in the above-mentioned architectures illustrated in fig. 2b to 2d, the signaling generated by the CU may be sent to the terminal device through the DU, or the signaling generated by the terminal device may be sent to the CU through the DU. For example, the signaling of the RRC or PDCP layer is finally processed as the signaling of the physical layer to be sent to the terminal device, or is converted from the received signaling of the physical layer. Under this architecture, the signaling of the RRC or PDCP layer may be considered to be transmitted through the DU, or through the DU and the RU.

Optionally, any one of the DU, CU-CP, CU-UP, and RU may be a software module, a hardware structure, or a software module + hardware structure, without limitation. The existence form of different entities can be different, and is not limited. For example DU, CU-CP, CU-UP are software modules and RU is a hardware structure. These modules and the methods performed by them are also within the scope of the embodiments of the present application.

3. CN

One or more CN devices, e.g., CN device 120, may be included in the CN. In the fifth generation (the 5) ^th generation, 5G) communication system is taken as an example, the CN may include an access and mobility management function (AMF) network element, a Session Management Function (SMF) network element, a User Plane Function (UPF) network element, a Policy Control Function (PCF) network element, a Unified Data Management (UDM) network element, and an Application Function (AF) network element.

In this embodiment of the present application, the apparatus for implementing the function of the core network device may be a core network device; or may be a device capable of supporting the core network device to implement the function, such as a chip system, a hardware circuit, a software module, or a hardware circuit plus a software module, and the device may be installed in the core network device or may be used in cooperation with the core network device. In the technical solution provided in the embodiment of the present application, taking a device for implementing a function of a core network device as an example, the core network device is described.

It should be understood that the number of each device in the communication system shown in fig. 1 is merely an illustration, and the embodiment of the present application is not limited thereto, and in practical applications, the communication system may further include more terminal devices, more RAN devices, and may further include other devices.

The network architecture shown in fig. 1 may be applied to communication systems of various Radio Access Technologies (RATs), for example, a 4G (or LTE) communication system, a 5G (or new radio, NR) communication system, a transition system between the LTE communication system and the 5G communication system, which may also be referred to as a 4.5G communication system, or a future communication system, such as a 6G communication system. The network architecture and the service scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not form a limitation on the technical solution provided in the embodiment of the present application, and as a person of ordinary skill in the art knows that along with the evolution of the communication network architecture and the appearance of a new service scenario, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

In the current wireless communication system, there is a need for multi-resource integration in order to improve the utilization rate of scattered frequency bands. The multi-resource integration can be realized by Carrier Aggregation (CA) technology, and the spectrum resources of the same frequency band (band) or different frequency bands are aggregated for the UE, so that the utilization rate of network resources is improved, and the user experience is improved. CA refers to grouping together 2 or more Carrier Components (CCs), also referred to as carriers, to support a larger transmission bandwidth. In practice, each carrier element corresponds to an independent serving cell. Typically 1 carrier unit can be equated with 1 serving cell. To efficiently utilize the fragmented spectrum, carrier aggregation supports aggregation between different carrier units. E.g., carrier elements of the same or different frequency bands; or adjacent or non-adjacent carrier units in the same frequency band; or carrier elements in different frequency bands, etc. In the embodiment of the present application, a plurality of carriers in different frequency bands or non-adjacent carriers in the same frequency band may be referred to as a non-continuous spectrum, and one carrier or adjacent carriers in the same frequency band may be referred to as a continuous spectrum.

Take the example that the UE supports carrier aggregation in two frequency bands. As shown in fig. 3, the two frequency bands may be referred to as band1 (band 1) and band2 (band 2). The two frequency bands may occupy separate radio frequency channels, i.e. the frequency band1 occupies a separate radio frequency channel, and the radio frequency channels are used to transmit and/or receive signals on the frequency band 1. It is understood that in the description of the present application, the radio frequency channels may include a radio frequency transmit channel and a radio frequency receive channel. In the example of fig. 3, a Power Amplifier (PA) is included in the transmitting rf channel, and a Low Noise Amplifier (LNA) is included in the receiving rf channel. Similarly, the band2 also occupies a separate rf channel, and the transmission and/or reception of signals on the band2 are performed by using the rf channel. In the description of the embodiments of the present application, each frequency band shown in fig. 3 occupies a separate radio frequency channel, which is called a narrow frequency mode. In the narrow-band mode, a plurality of frequency bands cannot share a radio frequency channel, so that the problem of low utilization rate of frequency spectrum resources exists.

In order to improve the utilization of spectrum resources, embodiments of the present application provide a wideband mode in which a UE supports communication of a single-antenna discontinuous spectrum, or a radio frequency channel shared by multiple frequency bands. Taking two frequency bands, i.e. frequency band1 and frequency band2 as an example, as shown in fig. 4, in the broadband mode, frequency band1 and frequency band2 can share the same rf channel. Similarly, the rf channel includes a transmitting rf channel and a receiving rf channel. In the above example of fig. 4, it is described that the PA is included in the transmission radio frequency channel, and the LNA is included in the reception radio frequency channel. By using the above-mentioned transmission radio frequency channel, the uplink signals of the frequency band1 and the frequency band2 can be transmitted. By using the receiving radio frequency channel, the downlink signals of the frequency band1 and the frequency band2 can be received. Since the rf channel may suffer from efficiency degradation and nonlinearity when transmitting a large bandwidth signal, which may cause spurious and out-of-band signal leakage, the transmit power may need to be backed off to meet the transmission requirement, or loss of Receive (RX) receive sensitivity may be caused.

As shown in fig. 5, a flow of a communication method is provided, by which a UE can report a supported wideband mode to a base station, and the method at least includes the following steps:

optionally, step 501: the UE determines a first mode among at least one mode, wherein the at least one mode comprises a wideband mode.

Step 502: the UE sends first indication information to the base station, wherein the first indication information is used for indicating a first mode.

In the embodiments of the present application, the following description is made with respect to the broadband mode: the wideband mode may include wideband transmission, which includes transmission in which the UE supports a single-antenna discontinuous spectrum, or multiple frequency bands share a common radio frequency transmission channel. Optionally, in the above-mentioned wideband transmission, the uplink maximum transmission power supported by the UE is a first value. The first value may be an average value of uplink maximum transmission power, and a value of the first value may be less than or equal to uplink maximum transmission power supported by the UE in the narrowband mode. Optionally, the wideband mode may further include wideband reception, where the wideband reception includes that the UE supports reception of a single-antenna discontinuous spectrum, or a radio frequency reception channel is shared by multiple frequency bands.

In one design, the at least one mode includes at least one broadband mode, and the at least one broadband mode may be predefined or specified by a protocol, without limitation. The UE may select a first mode in the at least one wideband mode according to its hardware capability, where the first mode is a wideband mode. Then, the UE sends first indication information to the base station, for indicating the first mode.

For example, as shown in table 1, the at least one wideband mode includes: broadband mode 1, broadband mode 2, broadband mode 3, and broadband mode 4. The UE may select one of the wideband modes according to its own hardware capability in the at least one wideband mode, and the wideband mode selected by the UE is referred to as a first mode and reported to the base station.

In this example, the radio frequency indices contained in each broadband mode are: 1) Maximum uplink transmission power; 2) RX receive sensitivity loss; wherein, the receiving sensitivity is the minimum receiving power of the useful signal which can be correctly demodulated by the receiver. The sensitivity loss is constrained by the hardware performance of the UE itself, and determines whether the user supports broadband reception, e.g., for some UEs, the sensitivity loss is too large to support broadband reception. This radio frequency index RX receive sensitivity loss is optional. 3) The broadband transmission capability can support broadband transmission only, or support both broadband transmission and broadband reception.

TABLE 1

Specifically, in the wideband mode 1, the uplink maximum transmission power supported by the UE takes the value Y1, and the value of Y1 is smaller than the uplink maximum transmission power X in the narrowband mode; the value of RX receiving sensitivity loss is Z, and Z is more than 0; the loss Z of RX receiving sensitivity is larger than 0, and the broadband receiving is not supported, and only the broadband transmitting is supported. In the broadband mode 2, the value of the uplink maximum transmission power supported by the UE is Y1, and the value of the Y1 is less than X; RX receive sensitivity loss is 0; while supporting both broadband transmission and broadband reception. In the wideband mode 3, the uplink maximum transmission power supported by the UE is Y2, and the value of Y2 is equal to X; the RX receiving sensitivity loss is Z, and the value of Z is more than 0; only wideband transmission is supported. In the wideband mode 4, the uplink maximum transmission power supported by the UE is Y2; RX receive sensitivity loss is 0; while supporting both broadband transmission and broadband reception.

In this design, under a given frequency band combination, the UE can select one of the 4 wideband modes, i.e. the first mode, according to its own hardware capability, and report the selected wideband mode to the base station. It should be noted that the wideband mode reported by the UE may be the same or different in different frequency band combinations, and is not limited. For example, when the wideband combination is 700M, 800M, and 900M spectrum, the UE may report wideband mode 1; when the wideband combination is 1.8G and 2.3G spectrum, the UE may report wideband mode 2.

It should be noted that, in the embodiment of the present application, the manner in which the UE reports the indication information of the supported wideband mode to the base station includes, but is not limited to, the following manners:

1) And the UE reports the index of the broadband mode to the base station. The base station may query the radio frequency indexes such as the maximum uplink transmission power and the receive sensitivity loss supported by the UE according to the wideband mode table shown in table 1. For example, if the UE reports the wideband mode index 1, the base station may query that the maximum transmit power supported by the UE is Y1, and the receive sensitivity loss is Z. Optionally, the base station may configure the wideband transmission of the UE uplink maximum power Y according to the parameters.

2) And the UE reports the index of the broadband mode and the maximum uplink transmitting power to the base station. The base station may query the radio frequency indexes such as the reception sensitivity loss of the UE according to the wideband mode table shown in table 1. For example, the UE may report the wideband mode index 2 and the maximum transmit power Y1 to the base station, and then the base station may look up a table to obtain the receive sensitivity loss Z =0 of the UE. Optionally, the base station may configure the wideband transmission and the wideband reception of the UE uplink maximum transmission power Y1 according to the above parameters.

3) And the UE reports the index of the broadband mode and the receiving sensitivity loss Z to the base station. The base station inquires the radio frequency indexes such as the maximum transmitting power of the user according to the broadband mode table shown in the table 1. For example, the UE reports the wideband mode index 3 and the receive sensitivity loss Z to the base station, and the base station looks up a table to obtain the maximum uplink transmit power supported by the UE as Y2. Optionally, the base station may configure the wideband transmission of the UE uplink maximum transmission power Y2 according to the above parameters.

4) And the UE reports the wideband mode index, the maximum transmitting power Y, the receiving sensitivity loss Z and the like to the base station, and the base station configures the user wideband transmission according to the user reporting information. For example, the UE reports the wideband mode index 4, the maximum uplink transmit power Y2, the receive sensitivity loss Z, and the like. Optionally, the base station configures wideband transmission and wideband reception of the uplink maximum power Y2 of the user according to the information.

In another design, the at least one mode includes a wideband mode and a narrowband mode. The UE can select a first mode according to the capability of the UE in a wide frequency mode and a narrow frequency mode, the first mode can be the wide frequency mode or the narrow frequency mode, and the UE reports first indication information to the base station for indicating the first mode.

In this design, the broadband mode may be third generation partnership project (3) ^rd generation partnership project，3 GPP) release18 (release 18, R18). The narrowband mode may be an existing transmission mode supported by 3GPP release16 (release 16, R16) or release 17 (release 17, R17). For example, as shown in table 2, the radio frequency indicators included in the narrowband mode are: 1) The maximum uplink transmitting power supported by the UE is X; 2) The RX receive sensitivity loss is 0. For example, the UE may transmit upstream at 23dBm power in a single frequency band with no loss in receive sensitivity. Radio frequency indices included in the wideband mode indices: 1) The maximum uplink transmission power supported by the UE is X-D, the value of D is greater than or equal to 0, and X is the maximum uplink transmission power supported by the UE in a narrow-band mode; 2) The loss of receiving sensitivity is Z, and the value of Z is greater than 0. For example, in the wideband mode, the UE reports the maximum uplink transmit power of 17dBm and the downlink receive sensitivity loss of 2dB. Under a given frequency band combination, the UE needs to report at least one of the maximum uplink transmit power X-D and the receive sensitivity loss Z according to its own hardware capability.

TABLE 2

It should be noted that in the example shown in table 2, since the current UEs are all supported in the narrowband mode, the base station defaults that the UEs are all supported in the narrowband mode. Therefore, in the example of table 2, if the first mode selected by the UE is the narrowband mode according to its own hardware capability, the UE does not need to report to the base station. Or, if the first mode selected by the UE is the wideband mode according to the hardware capability of the UE, the UE needs to report the wideband mode to the base station. Or, the UE may report the selected first mode to the base station no matter whether the selected first mode is the wideband mode or the narrowband mode according to its own hardware capability, which is not limited. In the following description in the embodiments of the present application, reporting of a wideband mode to a base station by a UE is taken as an example for explanation.

When the UE reports the wideband mode to the base station, the reported information may be reported in the following manners for various hardware indications of the UE:

1. the UE reports the wideband mode index, and the base station queries the maximum transmit power supported by the user and the radio frequency indexes such as receive sensitivity loss according to the wideband mode table shown in table 2. For example, the UE reports the wideband mode, the base station looks up the table to obtain the maximum transmit power and the sensitivity loss of the user, and configures the wideband transmit power of the uplink maximum power X-D and the downlink receive sensitivity loss Z of the user according to the parameters.

2. And the UE reports the broadband mode and the maximum transmitting power X-D, and the base station looks up a table according to the broadband mode table shown in the table 2 to obtain radio frequency indications such as user receiving sensitivity loss and the like. For example, the UE reports the broadband mode and the maximum transmitting power X-D, the base station looks up a table to obtain the user receiving sensitivity loss Z, and configures the broadband transmitting of the user uplink maximum power X-D and the downlink receiving sensitivity loss Z according to the parameters.

3. And the UE reports the broadband mode and the receiving sensitivity loss Z, and the base station looks up the table according to the table shown in the table 2 to obtain the radio frequency indexes such as the maximum transmitting power of the user. For example, the UE reports the wideband mode and the receive sensitivity loss Z, the base station looks up the table to obtain the maximum transmit power X-D of the user, and configures the wideband transmit and downlink receive sensitivity loss Z of the maximum uplink power X-D of the user according to the above parameters.

4. And the UE reports the broadband mode, the maximum transmitting power X-D and the receiving sensitivity loss Z, and the base station configures the broadband transmission of the user according to the information reported by the user. For example, the UE reports the wideband mode, the maximum transmit power X-D, and the receive sensitivity loss Z, and according to the above information, the base station configures the wideband transmit of the user uplink maximum power X-D and the downlink receive sensitivity loss Z.

In another design, the wideband mode in the embodiments of the present application may be a wideband burst (burst) transmission. The wideband burst transmission may include that the UE supports burst transmission of a single-antenna discontinuous spectrum, and in the burst transmission, the maximum uplink instantaneous transmission power of the UE is a second value, where the second value is greater than the first value. Optionally, in this design, wideband reception may also be included in the wideband mode. That is, the wideband mode in the embodiment of the present application may include wideband burst transmission, or wideband burst transmission and wideband reception.

The wideband burst transmission can be explained as follows: in the embodiment of the present application, since the PA bandwidth exceeds 4% of the central frequency point, the problems of efficiency reduction and nonlinearity may occur, and the back-off power transmission is required for wideband transmission. The embodiment of the application provides a new transmission mode, which is called a wideband burst mode, and in the wideband burst mode, a maximum instantaneous transmission power is introduced, so that the UE can improve the uplink transmission power in a short time and simultaneously take the PA amplification efficiency into consideration. Existing systems are typically defined in terms of a Specific Absorption Rate (SAR) that distributes the transmission power equally over a time window, but in some cases the transmission window may be further compressed. For example, originally a 2S transmission window, it is possible to transmit at 2 times the power in 1S and then not transmit at the following 1S, so that the total transmit power remains unchanged. In the embodiment of the present application, a transmission mode in which the transmission power is instantaneously increased in a short time is referred to as a burst transmission mode. In fact, the burst mode may be applied in a wideband mode, and may also be applied in a narrowband mode, without limitation. In the embodiment of the present application, the combination of the burst mode and the wideband mode is referred to as a wideband burst mode.

For example, as shown in fig. 6, (a) broadband high power emission mode: when a data packet is to be sent, the UE always sends according to the maximum user transmission power (23 dB) agreed in the protocol, but since the hardware performance of the UE is limited, this transmission mode is likely not to be realized, so that the wideband power backoff mode in (b) needs to be used to send at 17 dB. In addition to this there is the wideband burst mode of figure (c), that is the UE hardware does not support long time transmissions at 23dB, but may be satisfied with short time transmissions at 23 dB.

For example, the at least one mode includes wideband burst mode 1 and wideband burst mode 2. The UE can select one of the wideband burst mode 1 and the wideband burst mode 2, and report the selected wideband burst mode to the base station. As shown in table 3, the radio frequency indexes included in wideband burst mode 1 and wideband burst mode 2 are as follows: 1) The maximum uplink average transmission power X, X may be the uplink maximum transmission power in a wideband mode or the uplink maximum transmission power in a narrowband mode, and is not limited; 2) The value of the maximum instantaneous transmitting power Y is larger than X; 3) RX receive sensitivity is lost. Under a given frequency band combination, the UE needs to report a wideband burst mode according to its own hardware capability. Under different frequency band combinations, the wideband burst modes reported by the UE may be the same or different.

TABLE 3

Wideband burst mode	Maximum average transmit power	Maximum instantaneous transmit power	Loss of RX sensitivity
				1	X	Y, wherein Y > X	Z，Z＞0
2	X	Y, wherein Y > X	0

Specifically, for various hardware indicators of the UE, the reported information may include at least one of the following:

1. the UE reports the wideband burst mode index, and the base station looks up the table according to the wideband mode table shown in table 3 to obtain the radio frequency indexes such as maximum transmit power, receive sensitivity loss, and the like supported by the user. For example, the UE reports the wideband burst mode 1, the base station looks up the table to obtain the maximum average transmit power X, the maximum instantaneous transmit power Y, and the sensitivity loss Z of the user, and configures the wideband burst transmission of the maximum instantaneous power Y of the user according to the above parameters.

2. And the UE reports the broadband burst mode index and any one or more of the maximum average transmission power X, the maximum instantaneous transmission power Y and the RX sensitivity loss. And the base station looks up the table according to the broadband mode table shown in the table 3 to obtain the other radio frequency indexes of the user. For example, the UE reports the wideband burst mode 2 and the maximum average transmit power X, the base station looks up the table to obtain the user maximum instantaneous transmit power Y and the sensitivity loss Z, and configures the wideband burst transmission and the wideband reception of the user uplink maximum instantaneous power Y according to the above parameters.

In addition, considering the compatibility with the design shown in table 2 and the design shown in table 3, the wideband mode and the wideband burst mode may be reported in the following modes:

1. the UE reports the wideband mode and the wideband burst mode respectively, and the base station considers that the UE supports two transmission modes simultaneously.

2. The UE reports the broadband mode or the broadband burst mode respectively, if the UE reports the broadband mode, the UE does not support the broadband burst mode by default, otherwise, the UE reports the broadband burst mode by default, and the UE does not support the broadband mode by default.

Optionally, in step 503: and the base station sends configuration information to the UE, wherein the configuration information is used for configuring a second mode of the UE to work in the at least one mode, and the second mode is the same as or different from the first mode.

In this embodiment, when receiving the first indication information, the base station may determine whether the UE supports wideband transmission, or specifically indicate which wideband transmission mode. The subsequent base station may configure the UE to operate in one mode, for example, the second mode, according to the actual time-frequency resource, and send the indication information of the second mode to the UE. Optionally, the configuration information may include a transmission power of the UE when the UE operates in the second mode, where the transmission power may be a transmission power under open-loop or closed-loop power control, and the transmission power should not exceed a maximum transmission power in the mode reported by the UE.

Subsequently, the UE may switch from the second mode to a third mode of the at least one mode. For example, the UE may switch itself when a certain condition is satisfied, or may switch to the third mode based on the communication message when receiving the notification message from the base station, and the like, without limitation. For example, in one design, the flow shown in fig. 3 may further include:

step 504: the UE may receive a notification message from the base station instructing the UE to switch to the third mode and/or activate the third mode.

In this embodiment, if all of the predefined at least one mode are in an active state, the base station may send Downlink Control Information (DCI) to the UE. The DCI may include an indicator, which may indicate different modes. Subsequently, the UE may activate the mode indicated by the DCI indicator. Alternatively, the UE may determine the activated mode according to frequency domain resource allocation (frequency domain resource allocation) information of the DCI. For example, if the frequency domain resource allocation indication is concentrated on one continuous spectrum, the UE uses a narrow-band transmission mode; when the frequency domain resource allocation indications are distributed over multiple non-contiguous frequency spectrums, then the UE uses a wideband transmission mode.

In the embodiment of the present application, taking the UE switching between the wideband mode and the narrowband mode as an example, the following description is made:

in one design, the UE reports the wideband transmission capability, the base station defaults to activating both the wideband transmission capability and the narrowband transmission capability, and subsequent narrowband-to-wideband transmission handover is scheduled in real time via DCI signaling. Specifically, how to use DCI signaling for scheduling may be implemented in the following ways:

mode 1: a narrow-band and wide-band indicator (1 bit) is added in the DCI, and the UE is switched to a corresponding transmission mode according to the indicator. For example, when the value of the indicator is 0, the UE is instructed to use narrow frequency transmission; when the indicator value is 1, the UE is instructed to use wideband transmission.

Mode 2: and the UE determines the transmission mode according to the information of at least one domain in the DCI. For example, the UE may decide its transmission mode according to the frequency domain resource allocation information in the DCI. When the frequency domain resource allocation is concentrated on one continuous spectrum, the UE uses a narrow-band transmission mode; when the frequency domain resource allocation is distributed over multiple non-contiguous frequency spectrums, the UE uses a wideband transmission mode.

In another design, the UE reports the wideband transmission capability, the base station defaults to the wideband transmission capability in an off state, and the subsequent base station needs to switch the UE narrowband-wideband transmission capability through RRC and MAC-CE signaling. The method can be specifically divided into the following two modes:

mode 1: narrow band broadband coexistence mode. When the base station switches the UE to the wideband mode, the UE is in the narrowband and wideband coexistence state, and the UE performs real-time switching between the wideband transmission mode and the narrowband transmission mode based on DCI (as in the above mode 1).

Mode 2: narrow band broadband non-coexistence mode. When the base station switches the UE to the broadband mode, the UE is in the broadband mode, the UE can only transmit according to the broadband mode at the moment, and the UE cannot be switched to the narrow-band transmission mode until the base station indicates the UE to be switched to the narrow-band mode through RRC and MAC-CE signaling.

In the embodiment of the application, compared with a narrow-band mode of the existing carrier aggregation technology, the broadband transmission mode provided by the embodiment of the application enables multi-band co-antenna transmission. Aiming at the reporting of the UE capability, the invention designs a plurality of reporting modes and designs the scheduling behavior of the base station to the UE on the basis. The related scheme can ensure that the UE maximizes the utilization rate of the frequency spectrum resources.

The embodiment of the present application further provides another multi-resource integration method, including: this is achieved by a technique of aggregating spectrum resources of the same frequency band (band) and/or different frequency bands into one serving cell, i.e. a serving cell comprising multiple frequency bands, or multiple carriers. The number of the uplink carriers is more than or equal to one, and the number of the downlink carriers is more than or equal to two. The uplink carrier may include a normal uplink carrier, and/or a supplemental uplink carrier (SUL), etc. Different uplink carriers are within a frequency band or over multiple frequency bands and different downlink carriers are within a frequency band or over multiple frequency bands.

Optionally, only one downlink carrier in the multiple downlink carriers in the serving cell sends a predefined signal type, where the predefined signal type may include at least one of the following: a Synchronization Signal Block (SSB), a remaining minimum system message (RMSI) (which may also be called a system information block 1 (system information block, SIB 1)), other system messages (OSI), a paging message, a Tracking Reference Signal (TRS), a channel state information reference Signal (CSI-RS) for Radio Resource Management (RRM) measurement, or a Random Access Response (RAR). The SIB1 includes information of each uplink carrier and/or information of a downlink carrier in the serving cell. Wherein, the downlink carrier information comprises at least one of the following items: carrier frequency, identification (such as index) of the carrier, location of a common control resource set (CORESET) 0, sub-carrier space (SCS) available for the carrier, and starting position and bandwidth of Resource Block (RB) corresponding to the sub-carrier space (SCS) available for the sub-carrier space. The uplink carrier information includes at least one of: carrier frequency, carrier identification (such as index), available subcarrier spacing of carriers and starting position and bandwidth of available resource blocks corresponding to the subcarrier spacing, and Random Access Channel (RACH) resource. In the process of competing random access, the UE can select random access resources on any uplink carrier in a service cell, so that load balance of the UE on different uplink carriers is enabled, the time delay of UE access is reduced, and the flexibility of a network is improved. For the non-contention random access procedure, the base station may also select a random access resource of any uplink carrier to send to the UE.

In one design, the maximum active number of BWPs (bandwidth part, BWP) in the serving cell is one, and the maximum configured number of BWPs on each downlink carrier is 1, where the maximum configured number of BWPs in the serving cell is the same as the number of downlink carriers in the serving cell. And the base station indicates the carrier activated by the UE and the BWP on the carrier through a downlink control channel. In addition to the activated downlink BWP and the corresponding downlink carrier, other downlink BWPs and downlink carriers are deactivated. Optionally, the downlink control information may carry a downlink carrier index or a downlink BWP index or a downlink carrier index and a downlink BWP index to indicate the downlink BWP activated by the UE and the corresponding downlink carrier.

In one design, the maximum active number of downlink BWPs in the serving cell is one, while the maximum configured number of downlink BWPs on each downlink carrier is greater than or equal to one, e.g., 4, and the maximum configured number of BWPs in the serving cell is 4 × M, where M is the number of downlink carriers in the serving cell. If the BWPs on different carriers are numbered independently, the base station indicates the carriers activated by the UE and the BWPs on the carriers by carrier identification and BWP index. If the BWP on different carriers are jointly numbered, the base station indicates the UE activated carrier and the BWP on that carrier by means of the BWP index. In addition to the activated downlink BWP and the corresponding downlink carrier, other downlink BWPs and downlink carriers are deactivated.

In one design, the maximum number of activations of downlink BWP in the serving cell is N, where N may be greater than or equal to 1, and may be the same as or different from the number of downlink carriers in the serving cell. The maximum configured downlink BWP number on each downlink carrier is greater than or equal to one, for example, 4, and the maximum configured BWP number in the serving cell is 4 × M, where M is the number of downlink carriers in the serving cell. The base station indicates, by one or more carrier identifiers and/or BWP indexes, the carriers activated by the UE and the BWPs on the carriers, for example, a serving cell includes 3 downlink carriers, carrier 1, carrier 2, and carrier 3, where the number of the maximum activated downlink BWPs on each carrier is 1, and then the combination of the downlink carriers activated in the serving cell includes { carrier 1}, { carrier 2}, { carrier 3}, { carrier 1, carrier 2}, { carrier 1, carrier 3}, { carrier 2, carrier 3}, { carrier 1, carrier 2, and carrier 3}; switching between different downlink carrier combinations can be realized by activation/deactivation of carriers, the combination of activated carriers { carrier 1} is switched to the combination { carrier 1, carrier 2}, the base station sends an indication of activation of carrier 2 to the UE, the combination of { carrier 1, carrier 2} is switched to the combination { carrier 2, carrier 3}, the base station sends an indication of activation of carrier 3 and deactivation of carrier 1 to the UE, and switching of active BWP in the carriers can be realized by indicating the UE to activate a BWP index; for another example, the serving cell includes a downlink carrier 4, a downlink carrier 5, and a downlink carrier 6, where the carrier 4 includes downlink BWP1 and BWP2, the carrier 5 includes downlink BWP3 and downlink BWP4, the carrier 6 includes downlink BWP5 and downlink BWP6, and the maximum number of active BWPs on each carrier is 1, then the base station may indicate activation of the carrier through activation of BWP, and if there is an active downlink BWP on the downlink carrier, the downlink carrier is in an active state, otherwise, the downlink carrier is in a deactivated state; the base station indicates the UE to activate the downlink BWP combination in the serving cell, for example, the base station indicates that the combination { BWP1, BWP3} is in an active state, then the carrier 4 and the carrier 5 are in an active state, and the carrier 6 is in a deactivated state, and the base station activates and deactivates the carrier and BWP in the serving cell by instructing the handover of the BWP combination. In a downlink carrier, the maximum number of activated downlink BWPs is K, where K is greater than or equal to 1 and K is less than or equal to the number of downlink BWPs configured on the downlink carrier. The base station indicates the deactivated carrier of the UE and the BWP on the carrier by one or more carrier identities and/or BWP indices. When there is no activated downlink BWP on the downlink carrier, the downlink carrier is deactivated.

In one design, 1 default downlink BWP is configured on each downlink carrier, and the base station indicates, through one or more carrier identifiers, the carrier activated by the UE, and at the same time, the default downlink BWP corresponding to the activated carrier is activated.

In one design, the base station may instruct the UE to switch to the activated downlink BWP or the activated downlink BWP combination and the corresponding downlink carrier, and switch to another downlink BWP or the activated downlink BWP combination and the corresponding downlink carrier. There may be one or more downlink BWPs and corresponding downlink carriers that are active both before and after the handover.

The description of the upstream BWP is similar to the downstream BWP and is not repeated here.

In the embodiment of the present application, the same time domain synchronization information and/or frequency domain synchronization information are shared among different carriers in a serving cell. Optionally, at least one of the following is also shared: the same path loss, reference signal received power, or quasi co-location information. Or the difference value between predefined types of information among different carriers in the serving cell can be notified through predefinition or information, and the predefined type of information includes at least one of the following: time domain synchronization information, frequency domain synchronization information, path loss, reference signal received power, or quasi co-location information, etc. The combination of frequency bands in the serving cell may be predefined or reported by the UE.

When a new BWP and corresponding carrier are activated, the UE may use one or more of the time domain synchronization information and/or frequency domain synchronization information, path loss, reference signal received power, or quasi co-location information of other activated BWPs and corresponding carriers without performing measurement on the newly activated BWP and corresponding carrier.

It should be noted that in the embodiment of the present application, at least one serving cell of the UE may employ a wideband mode. Each serving cell includes at least one carrier, which may be in a wideband mode. At least one BWP may be included in each carrier, and the at least one BWP may also be in a wideband mode. The wideband mode may be used for uplink transmission, and/or downlink transmission, without limitation.

The method according to the embodiment of the present application is described in detail above with reference to fig. 1 to 6, and the apparatus according to the embodiment of the present application is described in detail below with reference to fig. 7 to 9. It is to be understood that the description of the apparatus embodiments corresponds to the description of the method embodiments, and therefore, reference may be made to the description of the method embodiments above without specific details.

Fig. 7 shows a possible block diagram of an apparatus according to an embodiment of the present application. As shown in fig. 7, the apparatus 700 may include: the communication unit 701 is configured to support communication between the apparatus 700 and other devices. Optionally, the communication unit 701 is also referred to as a transceiver unit, and may include a receiving unit and/or a transmitting unit, which are respectively configured to perform receiving and transmitting operations. The processing unit 702 is used to support the processing by the apparatus. Optionally, the apparatus 700 may further comprise a storage unit 703 for storing program codes and/or data of the apparatus 700.

In the first embodiment, the apparatus 700 may be a terminal device or a module, a chip or a circuit in the terminal device. The communication unit 701 is configured to perform the transceiving operation of the UE in the above method embodiment; the processing unit 702 is configured to perform the processing operations of the UE in the above method embodiments.

For example, the processing unit 702 is configured to determine a first mode among at least one mode, where the at least one mode includes a wideband mode, and the wideband mode includes a mode in which the terminal device supports communication in a single-antenna discontinuous spectrum; a communication unit 701, configured to send first indication information to a network device, where the first indication information is used to indicate the first mode.

In one possible design, the first value is less than or equal to an uplink maximum transmit power supported by the terminal device in a narrowband mode.

In one possible design, the wideband mode includes wideband burst transmission, the wideband burst transmission includes burst transmission in which the terminal device supports a single-antenna discontinuous spectrum, and in the wideband burst transmission, the maximum uplink instantaneous transmit power of the terminal device is a second value, and the second value is greater than the first value.

In one possible design, the communication unit 701 is further configured to: receiving configuration information from the network device, wherein the configuration information is used for configuring a second mode of the terminal device to work in the at least one mode, and the second mode is the same as or different from the first mode; a processing unit 702, further configured to: and working in the second mode according to the configuration information.

In one possible design, the processing unit 702 is further configured to: switching from the second mode to a third mode of the at least one mode.

In one possible design, the communication unit 701 is further configured to: and receiving a notification message from the network equipment, wherein the notification message is used for instructing the terminal equipment to switch to the third mode and/or activating the third mode.

In the second embodiment, the apparatus 700 may be a network device or a module, a chip or a circuit in the network device. The communication unit 701 is configured to perform the transceiving operation of the base station in the above method embodiment; the processing unit 702 is configured to perform the processing operations of the base station in the above method embodiments.

For example, a communication unit 701 configured to receive first indication information from a terminal device; the first indication information is used for indicating a first mode in at least one mode, the at least one mode includes a wideband mode, and the wideband mode includes that the terminal device supports communication of a single-antenna discontinuous spectrum.

In one possible design, the wideband mode includes wideband transmission, the wideband transmission includes transmission in which the terminal device supports a single-antenna discontinuous spectrum, and uplink maximum transmission power supported by the terminal device in the wideband transmission is a first value.

In one possible design, the first value is equal to or less than an uplink maximum transmit power supported by the terminal device in the narrowband mode.

In one possible design, the communication unit 701 is further configured to: and sending configuration information to the terminal equipment, wherein the configuration information is used for configuring a second mode of the terminal equipment working in the at least one mode, and the second mode is the same as or different from the first mode.

In one possible design, the communication unit 701 is further configured to: sending a notification message to the terminal device, where the notification message is used to instruct the terminal device to switch to a third mode of the at least one transmission mode, and/or activate the third mode.

It should be understood that the division of the units in the above apparatus is only a division of logical functions, and the actual implementation may be wholly or partially integrated into one physical entity, or may be physically separated. And the units in the device can be realized in the form of software called by the processing element; or can be implemented in the form of hardware; part of the units can also be implemented in the form of software invoked by a processing element and part of the units can be implemented in the form of hardware. For example, each unit may be a processing element separately set up, or may be implemented by being integrated into a chip of the apparatus, or may be stored in a memory in the form of a program, and a function of the unit may be called and executed by a processing element of the apparatus. In addition, all or part of the units can be integrated together or can be independently realized. The processing element described herein may in turn be a processor, which may be an integrated circuit having signal processing capabilities. In implementation, each operation of the above method or each unit above may be implemented by an integrated logic circuit of hardware in a processor element or in a form called by software through the processor element.

In one example, the units in any of the above apparatus may be one or more integrated circuits configured to implement the above method, for example: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), or a combination of at least two of these integrated circuit forms. For another example, when a unit in the apparatus can be implemented in the form of a processing element scheduler, the processing element may be a processor, such as a Central Processing Unit (CPU), or other processor capable of calling a program. As another example, these units may be integrated together and implemented in the form of a system-on-a-chip (SOC).

The above unit for receiving is an interface circuit of the apparatus for receiving signals from other apparatuses. For example, when the device is implemented in the form of a chip, the receiving unit is an interface circuit for the chip to receive signals from other chips or devices. The above unit for transmitting is an interface circuit of the apparatus for transmitting a signal to other apparatuses. For example, when the device is implemented in the form of a chip, the transmitting unit is an interface circuit for the chip to transmit signals to other chips or devices.

Fig. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present application. As shown in fig. 8, the terminal device includes: antenna 810, radio frequency part 820, signal processing part 830. Antenna 810 is connected to radio frequency section 820. In the downlink direction, the radio frequency part 820 receives information transmitted by the network device through the antenna 810, and transmits the information transmitted by the network device to the signal processing part 830 for processing. In the uplink direction, the signal processing part 830 processes the information of the terminal device and sends the information to the radio frequency part 820, and the radio frequency part 820 processes the information of the terminal device and sends the information to the network device through the antenna 810.

The signal processing part 830 may include a modem subsystem for implementing processing of each communication protocol layer of data; the system also comprises a central processing subsystem used for realizing the processing of the operating system and the application layer of the terminal equipment; in addition, other subsystems, such as a multimedia subsystem for controlling a camera, a screen display, etc. of the terminal device, a peripheral subsystem for connecting with other devices, etc. may be included. The modem subsystem may be a separately provided chip.

The modem subsystem may include one or more processing elements 831, including, for example, a host CPU and other integrated circuits. The modem subsystem may also include a storage element 832 and an interface circuit 833. The storage element 832 is used to store data and programs, but the programs for executing the methods performed by the terminal device in the above methods may not be stored in the storage element 832, but stored in a memory outside the modem subsystem, which is loaded for use when in use. The interface circuit 833 is used to communicate with other subsystems.

The modem subsystem may be implemented by a chip comprising at least one processing element for performing the steps of any of the methods performed by the terminal equipment above, and interface circuitry for communicating with other devices. In one implementation, the unit for the terminal device to implement each step in the above method may be implemented in the form of a processing element scheduler, for example, an apparatus for the terminal device includes a processing element and a storage element, and the processing element calls a program stored in the storage element to execute the method executed by the terminal device in the above method embodiment. The memory elements may be memory elements on the same chip as the processing elements, i.e. on-chip memory elements.

In another implementation, the program for executing the method performed by the terminal device in the above method may be in a memory element on a different chip than the processing element, i.e. an off-chip memory element. At this time, the processing element calls or loads a program from the off-chip storage element onto the on-chip storage element to call and execute the method executed by the terminal device in the above method embodiment.

In yet another implementation, the unit of the terminal device for implementing the steps of the above method may be configured as one or more processing elements disposed on the modem subsystem, where the processing elements may be integrated circuits, for example: one or more ASICs, or one or more DSPs, or one or more FPGAs, or a combination of these types of integrated circuits. These integrated circuits may be integrated together to form a chip.

The units of the terminal device for realizing the steps of the method can be integrated together and realized in the form of SOC, and the SOC chip is used for realizing the method. At least one processing element and a storage element can be integrated in the chip, and the processing element calls the stored program of the storage element to realize the method executed by the terminal equipment; or, at least one integrated circuit may be integrated in the chip, for implementing the method executed by the above terminal device; alternatively, the above implementation modes may be combined, the functions of the partial units are implemented in the form of a processing element calling program, and the functions of the partial units are implemented in the form of an integrated circuit.

It is seen that the above apparatus for a terminal device may comprise at least one processing element and interface circuitry, wherein the at least one processing element is configured to perform the method performed by any one of the terminal devices provided by the above method embodiments. The processing element may: namely, the method calls the program stored in the storage element to execute part or all of the steps executed by the terminal equipment; it is also possible to: that is, part or all of the steps executed by the terminal device are executed by integrated logic circuits of hardware in the processor element in combination with instructions; of course, some or all of the steps performed by the terminal device may be performed in combination with the first manner and the second manner.

The processing elements herein, like those described above, may be implemented by a processor, and the functions of the processing elements may be the same as those of the processing unit described in fig. 7. Illustratively, the processing element may be a general-purpose processor, such as a CPU, and may also be one or more integrated circuits configured to implement the above methods, such as: one or more ASICs, or one or more microprocessors DSP, or one or more FPGAs, etc., or a combination of at least two of these integrated circuit forms. The memory element may be implemented by a memory, and the function of the memory element may be the same as that of the memory cell described in fig. 7. The memory element may be implemented by a memory, and the function of the memory element may be the same as that of the memory cell described in fig. 7. The storage element may be a single memory or a combination of memories.

The terminal device shown in fig. 8 can implement the procedures related to the UE in the above method embodiment. The operations and/or functions of the modules in the terminal device shown in fig. 8 are respectively for implementing the corresponding flows in the above method embodiments. Specifically, reference may be made to the description of the above method embodiments, and the detailed description is appropriately omitted herein to avoid redundancy.

Referring to fig. 9, a schematic structural diagram of a network device provided in the embodiment of the present application is shown, where the network device may be an access network device (e.g., a base station). The access network device 900 may comprise one or more DUs 901 and one or more CUs 902. The DU901 may comprise at least one antenna 9011, at least one radio frequency unit 9012, at least one processor 9013 and at least one memory 9014. The DU901 part is mainly used for transceiving radio frequency signals, converting radio frequency signals and baseband signals, and partially processing baseband. The CU902 may include at least one processor 9022 and at least one memory 9021.

The CU902 section is mainly used for performing baseband processing, controlling access network devices, and the like. The DU901 and the CU902 may be physically located together or physically located separately, that is, distributed base stations. The CU902 is a control center of the access network device, and may also be referred to as a processing unit, and is mainly used to complete a baseband processing function. For example, the CU902 may be configured to control the access network device to perform the operation procedure of the foregoing method embodiment with respect to the access network device.

Further, optionally, the access network device 900 may include one or more radio units, one or more DUs, and one or more CUs. Wherein the DU may include at least one processor 9013 and at least one memory 9014, the radio unit may include at least one antenna 9011 and at least one radio unit 9012, and the cu may include at least one processor 9022 and at least one memory 9021.

In an example, the CU902 may be formed by one or more boards, and the multiple boards may jointly support a radio access network with a single access indication (e.g., a 5G network), or may respectively support radio access networks with different access schemes (e.g., an LTE network, a 5G network, or other networks). The memory 9021 and the processor 9022 may serve one or more boards. That is, the memory and processor may be provided separately on each board. Multiple boards may share the same memory and processor. In addition, each single board can be provided with necessary circuits. The DU901 may be formed by one or more boards, and the boards may jointly support a radio access network with a single access instruction (e.g., a 5G network), or may respectively support radio access networks with different access schemes (e.g., an LTE network, a 5G network, or other networks). The memory 9014 and the processor 9013 may serve one or more boards. That is, the memory and processor may be provided separately on each board. Multiple boards may share the same memory and processor. In addition, each single board can be provided with necessary circuits.

The access network device shown in fig. 9 can implement the processes related to the base station in the above method embodiments. The operations and/or functions of the modules in the access network device shown in fig. 9 are respectively for implementing the corresponding flows in the above-described method embodiments. Specifically, reference may be made to the description of the above method embodiments, and the detailed description is appropriately omitted herein to avoid redundancy.

The terms "system" and "network" in the embodiments of the present application may be used interchangeably. "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated object, indicating that there may be three relationships, for example, a and/or B, which may indicate: a alone, A and B together, and B alone, wherein A and B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, "at least one of A, B, or C" includes A, B, C, AB, AC, BC, or ABC. And, unless otherwise specified, the embodiments of the present application refer to the ordinal numbers such as "first", "second", etc., for distinguishing a plurality of objects, and do not limit the sequence, timing, priority, or importance of the plurality of objects.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and so forth) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A method of communication, comprising:

the method comprises the steps that a terminal device determines a first mode in at least one mode, wherein the at least one mode comprises a broadband mode, and the broadband mode comprises the condition that the terminal device supports communication of a single-antenna discontinuous frequency spectrum;

the terminal equipment sends first indication information to network equipment, and the first indication information is used for indicating the first mode.

2. The method of claim 1, wherein the wideband mode comprises wideband transmissions including transmissions in which the terminal device supports single-antenna discontinuous spectrum, and wherein a maximum uplink transmit power supported by the terminal device is a first value in the wideband transmissions.

3. The method of claim 2, wherein the first value is less than or equal to an uplink maximum transmit power supported by the terminal device in a narrowband mode.

4. The method of claim 1, wherein the wideband mode comprises wideband burst transmission, the wideband burst transmission comprising burst transmission in which the terminal device supports single-antenna discontinuous spectrum, and wherein a maximum uplink instantaneous transmit power of the terminal device is a second value, the second value being greater than the first value.

5. The method of any of claims 2 to 4, wherein the broadband mode further comprises: and receiving broadband, wherein the receiving broadband comprises receiving the single-antenna non-connection frequency spectrum supported by the terminal equipment.

6. The method of any one of claims 1 to 5, wherein in the at least one mode, further comprising: a narrowband mode comprising communication that the terminal device supports a single antenna continuous spectrum.

7. The method of any one of claims 1 to 6, wherein after the terminal device sends the first indication information to the network device, further comprising:

the terminal device receives configuration information from the network device, wherein the configuration information is used for configuring a second mode of the terminal device to work in the at least one mode, and the second mode is the same as or different from the first mode;

and the terminal equipment works in the second mode according to the configuration information.

8. The method of claim 7, further comprising:

and the terminal equipment is switched to a third mode in the at least one mode from the second mode.

9. The method of claim 8, further comprising:

and the terminal equipment receives a notification message from the network equipment, wherein the notification message is used for indicating the terminal equipment to switch to the third mode and/or activating the third mode.

10. The method of claim 9, wherein the notification message is downlink control information DCI, and the terminal device determines the third mode according to a frequency domain resource allocation indication of the DCI.

11. A method of communication, comprising:

the network equipment receives first indication information from the terminal equipment;

the first indication information is used for indicating a first mode in at least one mode, the at least one mode includes a wideband mode, and the wideband mode includes that the terminal device supports communication of a single-antenna discontinuous spectrum.

12. The method of claim 11, wherein the wideband mode comprises wideband transmissions comprising transmissions in which the terminal device supports single-antenna discontinuous spectrum, and wherein a maximum uplink transmit power supported by the terminal device is a first value in the wideband transmissions.

13. The method of claim 12, wherein the first value is equal to or less than an uplink maximum transmit power supported by the terminal device in a narrowband mode.

14. The method of claim 11, wherein the wideband mode comprises wideband burst transmission, the wideband burst transmission comprising burst transmission with the terminal device supporting single antenna discontinuous spectrum, wherein a maximum uplink instantaneous transmit power of the terminal device is a second value, the second value being greater than the first value.

15. The method of any of claims 12 to 14, wherein the broadband mode further comprises: and receiving the broadband, wherein the receiving of the broadband comprises that the terminal equipment supports the receiving of the single-antenna discontinuous spectrum.

16. The method according to any one of claims 11 to 15, wherein in the at least one mode, further comprising: a narrowband mode comprising communication in which the terminal device supports a single antenna continuous spectrum.

17. The method according to any of claims 11 to 16, further comprising, after the network device sends the first indication information to the terminal device:

and the network equipment sends configuration information to the terminal equipment, wherein the configuration information is used for configuring a second mode of the terminal equipment in the at least one mode, and the second mode is the same as or different from the first mode.

18. The method of claim 17, further comprising:

and the network equipment sends a notification message to the terminal equipment, wherein the notification message is used for instructing the terminal equipment to switch to a third mode in the at least one transmission mode and/or activating the third mode.

19. The method of claim 18, wherein the notification message is Downlink Control Information (DCI) whose frequency domain resource allocation indication indicates the third mode.

20. A communications apparatus, comprising:

a processing unit, configured to determine a first mode in at least one mode, where the at least one mode includes a wideband mode, and the wideband mode includes that the terminal device supports communication of a single-antenna discontinuous spectrum;

a communication unit, configured to send first indication information to a network device, where the first indication information is used to indicate the first mode.

21. The apparatus of claim 20, wherein the wideband mode comprises wideband transmissions comprising transmissions in which the terminal device supports single-antenna discontinuous spectrum, and wherein a maximum uplink transmit power supported by the terminal device is a first value in the wideband transmissions.

22. The apparatus of claim 21, wherein the first value is less than or equal to an uplink maximum transmit power supported by the terminal device in a narrow-band mode.

23. The apparatus of claim 20, wherein the wideband mode comprises wideband burst transmission, the wideband burst transmission comprising burst transmission with the terminal device supporting single antenna discontinuous spectrum, wherein a maximum uplink instantaneous transmit power of the terminal device is a second value, the second value being greater than the first value.

24. The apparatus of any of claims 21 to 23, wherein the broadband mode further comprises: and receiving broadband, wherein the receiving broadband comprises receiving the single-antenna non-connection frequency spectrum supported by the terminal equipment.

25. The apparatus according to any one of claims 20 to 24, wherein in the at least one mode, further comprising: a narrowband mode comprising communication that the terminal device supports a single antenna continuous spectrum.

26. The apparatus of any one of claims 20 to 25,

the communication unit is further configured to: receiving configuration information from the network device, wherein the configuration information is used for configuring a second mode of the terminal device to work in the at least one mode, and the second mode is the same as or different from the first mode;

a processing unit further to: and operating in the second mode according to the configuration information.

27. The apparatus as recited in claim 26, said processing unit to further:

switching from the second mode to a third mode of the at least one mode.

28. The apparatus of claim 27, further comprising:

the communication unit is further configured to: and receiving a notification message from the network equipment, wherein the notification message is used for instructing the terminal equipment to switch to the third mode and/or activating the third mode.

29. The apparatus of claim 28, wherein the notification message is Downlink Control Information (DCI), and the terminal device determines the third mode according to a frequency domain resource allocation indication of the DCI.

30. A communications apparatus, comprising:

a communication unit for receiving first indication information from a terminal device;

31. The apparatus of claim 30, wherein the wideband mode comprises wideband transmission, the wideband transmission comprises transmission in which the terminal device supports single-antenna discontinuous spectrum, and the maximum uplink transmit power supported by the terminal device is a first value in the wideband transmission.

32. The apparatus of claim 31, wherein the first value is equal to or less than a maximum transmit power of an uplink supported by the terminal device in a narrow-band mode.

33. The apparatus of claim 30, wherein the wideband mode comprises wideband burst transmission, the wideband burst transmission comprising burst transmission with the terminal device supporting single antenna discontinuous spectrum, wherein a maximum uplink instantaneous transmit power of the terminal device is a second value, the second value being greater than the first value.

34. The apparatus of any one of claims 31 to 33, wherein the broadband mode further comprises: and receiving the broadband, wherein the receiving of the broadband comprises that the terminal equipment supports the receiving of the single-antenna discontinuous spectrum.

35. The apparatus according to any one of claims 30 to 34, wherein in the at least one mode, further comprising: a narrowband mode comprising communication that the terminal device supports a single antenna continuous spectrum.

36. The apparatus according to any one of claims 30 to 35, wherein the communication unit is further configured to:

and sending configuration information to the terminal equipment, wherein the configuration information is used for configuring a second mode of the terminal equipment working in the at least one mode, and the second mode is the same as or different from the first mode.

37. The apparatus of claim 36, wherein the communication unit is further configured to:

sending a notification message to the terminal device, where the notification message is used to instruct the terminal device to switch to a third mode of the at least one transmission mode, and/or activate the third mode.

38. The apparatus of claim 37, wherein the notification message is Downlink Control Information (DCI) whose frequency domain resource allocation indication indicates the third mode.

39. A communication apparatus, characterized in that it comprises means for implementing the method of any of claims 1 to 10.

40. A communications device comprising a processor and a memory, the processor and the memory coupled, the processor configured to implement the method of any of claims 1 to 10.

41. A communications device comprising means for implementing the method of any one of claims 11 to 19.

42. A communications device comprising a processor and a memory, the processor and the memory coupled, the processor configured to implement the method of any of claims 11 to 19.

43. A communication system comprising the apparatus of claim 39 or 40 and the apparatus of claim 41 or 42.

44. A computer-readable storage medium having stored thereon instructions which, when executed on a computer, cause the computer to perform the method of any of claims 1 to 10, or the method of any of claims 11 to 19.