CN109756935B

CN109756935B - Method and device for adjusting working bandwidth

Info

Publication number: CN109756935B
Application number: CN201810268791.4A
Authority: CN
Inventors: 程勇; 方平
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-11-03
Filing date: 2018-03-29
Publication date: 2021-12-17
Anticipated expiration: 2038-03-29
Also published as: CN109756935A

Abstract

The embodiment of the application provides a method and a device for adjusting working bandwidth, relates to the field of communication, and can adjust the working bandwidth of terminal equipment when the channel condition or the requirement of the terminal equipment changes, so that the utilization efficiency of bandwidth fragment resources of the terminal equipment is improved. The method comprises the following steps: the network equipment sends a first message to the terminal equipment, wherein the first message is used for indicating that the working bandwidth of the terminal equipment is switched from a first bandwidth segment to a second bandwidth segment, or the first message is used for indicating that the working bandwidth of the terminal equipment comprises the first bandwidth segment and an extension part of the first bandwidth segment; the extension part of the first bandwidth segment is adjacent to the first bandwidth segment in the frequency domain, the first bandwidth segment comprises a first uplink bandwidth segment and/or a first downlink bandwidth segment, and the second bandwidth segment comprises a second uplink bandwidth segment and/or a second downlink bandwidth segment. The embodiment of the application is applied to a scene of data transmission of the terminal equipment.

Description

Method and device for adjusting working bandwidth

The present application claims priority from chinese patent application filed on 03/11/2017 under the name of "a method for switching bandwidth segments" with the application number of 201711071925.5 from the chinese patent office, the entire contents of which are incorporated herein by reference.

Technical Field

The present application relates to the field of communications, and in particular, to a method and an apparatus for adjusting an operating bandwidth.

Background

To meet the increasing demand of users for wireless and mobile data communication, the third generation partnership project (3 GPP) has begun to establish fifth generation (5G) mobile communication system standards. The 5G mobile communication system will provide users with higher system bandwidth and data rate. To provide higher data rates, New Radio (NR) channels of 5G mobile communication systems employ a relatively large frequency bandwidth (e.g., 400 megahertz (MHz)). In this case, when the terminal device detects, searches or blindly detects the downlink control channel, the Radio Frequency (RF) front end of the transceiver (transceiver) and the baseband processing unit (baseband processing unit) of the terminal device always operate on a larger frequency bandwidth, which results in a larger power consumption of the terminal device and reduces the battery life of the terminal device. In order to reduce the power consumption of the terminal device, a relatively small frequency domain bandwidth (i.e., bandwidth part (BWP)) may be allocated to the terminal device when the terminal device is idle and when the data rate of the terminal device for communication is relatively low. Illustratively, as shown in fig. 1, one BWP may include N consecutive or non-consecutive Physical Resource Blocks (PRBs), each physical resource block including K sub-carriers. Where N is an integer greater than or equal to 1 (e.g., N ═ 7), and K is an integer greater than or equal to 1 (e.g., K is equal to 12). The carrier bandwidth (carrier bandwidth) in fig. 1 may refer to a frequency domain bandwidth provided by one carrier in which a 4G (4G) or 5G mobile communication system operates.

A network device (e.g., a next generation mobile communication base station (gNB)) may configure one or more bandwidth segments for a terminal device served by the network device. The bandwidth segments comprise uplink bandwidth segments and/or downlink bandwidth segments. At a particular time, at least one of the one or more configured bandwidth segments is active for a terminal device, referred to as an active bandwidth segment. The remaining bandwidth segments that have been configured by the network device but have not been activated are referred to as inactive bandwidth segments. The active bandwidth segment is the operating bandwidth segment of the terminal device.

However, since the bandwidth segment has a channel fading characteristic (frequency-selective fading), and the requirement of the terminal device for the frequency domain bandwidth often changes, how to flexibly and efficiently adjust the working bandwidth of the terminal device becomes an urgent problem to be solved.

Disclosure of Invention

The embodiment of the application provides a method and a device for adjusting a working bandwidth, which can adjust the working bandwidth of a terminal device when a channel condition or a requirement of the terminal device changes, and improve the utilization efficiency of bandwidth fragment resources of the terminal device.

In a first aspect, an embodiment of the present application provides a method for adjusting an operating bandwidth, including: the network equipment sends a first message to the terminal equipment, wherein the first message is used for indicating that the working bandwidth of the terminal equipment is switched from a first bandwidth segment to a second bandwidth segment, or the first message is used for indicating that the working bandwidth of the terminal equipment comprises the first bandwidth segment and an extension part of the first bandwidth segment; the extension part of the first bandwidth segment is adjacent to the first bandwidth segment in the frequency domain, the first bandwidth segment comprises a first uplink bandwidth segment and/or a first downlink bandwidth segment, and the second bandwidth segment comprises a second uplink bandwidth segment and/or a second downlink bandwidth segment.

In this way, the network device may trigger (implicitly indicate) the terminal device to send Channel State Information (CSI) and/or a reference signal on the first bandwidth segment and/or the second bandwidth segment through the first message, so that the network device may be enabled to obtain the channel state information of the terminal device on the second bandwidth segment. The network device may make a more accurate scheduling decision for the terminal device on the second bandwidth segment based on the CSI and/or reference signals sent by the terminal device. For example, the resource utilization efficiency can be effectively improved by selecting an accurate MCS.

Or, the network device may expand the working bandwidth of the terminal device through the first message according to the real-time requirement of the terminal device, so as to avoid resource waste caused by configuring a larger bandwidth segment for the terminal device all the time, and improve the resource utilization rate. Moreover, the network device may initially configure the terminal device with a smaller operating bandwidth (including only the first bandwidth segment), which means that the network device may serve more terminal devices, the system capacity may be increased, and the resource utilization may also be improved. Furthermore, the working bandwidth of the user can be flexibly changed under the condition of not changing the configuration of the physical uplink control channel and the physical downlink control channel of the terminal equipment, and the communication overhead caused by bandwidth switching operation is avoided.

In a possible implementation manner, if the first message is used to instruct the terminal device to switch the operating bandwidth from the first bandwidth segment to the second bandwidth segment, the method further includes: the network equipment receives a second message sent by the terminal equipment on the first uplink bandwidth segment or the second uplink bandwidth segment, wherein the second message comprises CSI of the terminal equipment on the second downlink bandwidth segment; and/or the network equipment receives the reference signal sent by the terminal equipment on the second uplink bandwidth segment. Therefore, the base station can make more accurate scheduling decision for the UE on the second uplink bandwidth segment and/or the second downlink bandwidth segment according to the CSI and/or the reference signal sent by the UE.

In a possible implementation manner, before the network device receives the second message sent by the terminal device, the method further includes: the network device sends an uplink grant instruction to the terminal device through the first message or the third message, where the third message includes the uplink grant instruction, the uplink grant instruction is used to indicate a frequency domain resource allocated to the terminal device by the network device on the first uplink bandwidth segment or on the second uplink bandwidth segment, and the frequency domain resource is used for transmission of the second message.

In one possible implementation, the method further includes: the network equipment sends configuration information to the terminal equipment through the first message or the fourth message; the fourth message includes configuration information for configuring the extension portion of the first bandwidth segment.

The fourth message may be a Radio Resource Control (RRC) message, and the configuration information in the RRC message may be used to configure the UE in the extension portion of the first bandwidth segment and the extension portion of the other inactive bandwidth segments. Alternatively, the configuration information in the RRC message may be used to configure an extension portion of a portion of the bandwidth segment of the UE. For example, the extension portion of the downlink bandwidth segment of the UE is configured by default.

In one possible implementation, the method further includes: the network device receives the channel state information of the terminal device on the extension part of the first bandwidth segment sent by the terminal device, and/or the network device receives the reference signal sent by the terminal device on the extension part of the first bandwidth segment. In this way, the base station can make more accurate scheduling decisions for the terminal device over the extended portion of the first bandwidth segment. For example, the resource utilization efficiency can be effectively improved by selecting an accurate modulation and coding mode.

In one possible implementation, the CSI includes at least one of the following information: channel Quality Indicator (CQI), Rank Indicator (RI), Precoding Matrix Indicator (PMI), Precoding Type Indicator (PTI), Received Signal Strength Indicator (RSSI), Reference Signal Received Power (RSRP), and Reference Signal Received Quality (RSRQ). The reference signal may be a channel Sounding Reference Signal (SRS) or a demodulation reference signal (DMRS).

In a second aspect, an embodiment of the present application provides a network device, including: a sending unit, configured to send a first message to a terminal device, where the first message is used to indicate that an operating bandwidth of the terminal device is switched from a first bandwidth segment to a second bandwidth segment, or the first message is used to indicate that the operating bandwidth of the terminal device includes the first bandwidth segment and an extended portion of the first bandwidth segment; the extension part of the first bandwidth segment is adjacent to the first bandwidth segment in the frequency domain, the first bandwidth segment comprises a first uplink bandwidth segment and/or a first downlink bandwidth segment, and the second bandwidth segment comprises a second uplink bandwidth segment and/or a second downlink bandwidth segment.

In a possible implementation manner, the method further includes a receiving unit, configured to: receiving a second message sent by the terminal equipment on the first uplink bandwidth segment or the second uplink bandwidth segment, wherein the second message comprises CSI of the terminal equipment on the second downlink bandwidth segment; and/or receiving the reference signal sent by the terminal equipment on the second uplink bandwidth segment.

In a possible implementation manner, the sending unit is further configured to: and sending an uplink authorization indication to the terminal equipment through the first message or the third message, wherein the third message comprises the uplink authorization indication, the uplink authorization indication is used for indicating the frequency domain resources allocated to the terminal equipment by the network equipment on the first uplink bandwidth segment or the second uplink bandwidth segment, and the frequency domain resources are used for transmitting the second message.

In a possible implementation manner, the sending unit is further configured to: sending configuration information to the terminal equipment through the first message or the fourth message; the fourth message includes configuration information for configuring the extension portion of the first bandwidth segment.

In one possible implementation, the receiving unit is further configured to: and receiving the channel state information of the terminal equipment on the extension part of the first bandwidth segment, which is sent by the terminal equipment, and/or receiving the reference signal sent by the terminal equipment on the extension part of the first bandwidth segment.

In one possible implementation, the CSI may include at least one or more of the following information: CQI, RI, PMI, PTI, RSSI, RSRP and RSRQ.

In a third aspect, the present application provides an apparatus, which exists in the form of a chip product, and the apparatus includes a processor and a memory, where the memory is configured to be coupled to the processor and store necessary program instructions and data of the apparatus, and the processor is configured to execute the program instructions stored in the memory, so that the apparatus performs the functions of the network device in the method.

In a fourth aspect, an embodiment of the present application provides a network device, where the network device may implement the function executed by the network device in the foregoing method embodiment, where the function may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software comprises one or more modules corresponding to the functions.

In one possible design, the network device includes a processor and a communication interface, and the processor is configured to support the network device to perform the corresponding functions of the method. The communication interface is used for supporting communication between the network equipment and other network elements. The network device may also include a memory, coupled to the processor, that stores program instructions and data necessary for the network device.

In a fifth aspect, embodiments of the present application provide a computer-readable storage medium, which includes instructions that, when executed on a computer, cause the computer to perform any one of the methods provided in the first aspect.

In a sixth aspect, embodiments of the present application provide a computer program product containing instructions, which when run on a computer, cause the computer to perform any one of the methods provided in the first aspect.

In a seventh aspect, an embodiment of the present application provides a method for adjusting an operating bandwidth, including: the terminal device receives a first message sent by the network device, wherein the first message is used for indicating that the working bandwidth of the terminal device is switched from a first bandwidth segment to a second bandwidth segment, or the first message is used for indicating that the working bandwidth of the terminal device comprises the first bandwidth segment and an extension part of the first bandwidth segment; the extension part of the first bandwidth segment is adjacent to the first bandwidth segment in the frequency domain, the first bandwidth segment comprises a first uplink bandwidth segment and/or a first downlink bandwidth segment, and the second bandwidth segment comprises a second uplink bandwidth segment and/or a second downlink bandwidth segment.

In this way, after receiving the first message, the terminal device may transmit CSI and/or reference signals on the first bandwidth segment and/or the second bandwidth segment, and may enable the base station to obtain channel state information of the UE on the second bandwidth segment. The base station may make a more accurate scheduling decision for the UE on the second bandwidth segment based on CSI and/or reference signals transmitted by the UE. For example, the resource utilization efficiency can be effectively improved by selecting an accurate MCS.

Alternatively, when the demand for resources by the UE increases, the bandwidth segment of the UE may be extended by the first message, i.e., the UE may determine from the first message that the operating bandwidth includes the first bandwidth segment and an extended portion of the first bandwidth segment. Resource waste caused by always configuring a larger bandwidth segment for the UE can be avoided, and the resource utilization rate can be improved. Moreover, the base station may configure a smaller operating bandwidth (including only the first bandwidth segment) for the UE at the beginning, which means that the base station may serve more UEs, the system capacity may be increased, and the resource utilization rate may also be improved. Furthermore, the first message can flexibly change the working bandwidth of the user without changing the configuration of the physical uplink control channel and the physical downlink control channel of the terminal device, thereby avoiding the communication overhead caused by the bandwidth switching operation.

In a possible implementation manner, if the first message is used to instruct the terminal device to switch the operating bandwidth from the first bandwidth segment to the second bandwidth segment, the method further includes: the terminal equipment sends a second message to the network equipment on the first uplink bandwidth segment or the second uplink bandwidth segment, wherein the second message comprises CSI of the terminal equipment on the second downlink bandwidth segment; and/or the terminal device sends the reference signal to the network device on the second uplink bandwidth segment.

In a possible implementation manner, before the terminal device sends the second message to the network device, the method further includes: the terminal device receives an uplink grant indication sent by the network device through the first message or a third message, where the third message includes the uplink grant indication, the uplink grant indication is used to indicate a frequency domain resource allocated to the terminal device by the network device on the first uplink bandwidth segment or on the second uplink bandwidth segment, and the frequency domain resource is used for transmission of the second message.

In a possible implementation manner, if the first message is used to indicate that the operating bandwidth of the terminal device includes the first bandwidth segment and the extended portion of the first bandwidth segment, the method further includes: the terminal equipment receives configuration information sent by the network equipment through the first message or the fourth message; the fourth message includes configuration information for configuring the extension portion of the first bandwidth segment.

In one possible implementation, the method further includes: the terminal equipment sends the channel state information of the terminal equipment on the extension part of the first bandwidth segment to the network equipment; and/or the terminal equipment transmits the reference signal to the network equipment at the extension part of the first bandwidth segment.

In an eighth aspect, an embodiment of the present application provides a terminal device, including: a receiving unit, configured to receive a first message sent by a network device, where the first message is used to indicate that an operating bandwidth of a terminal device is switched from a first bandwidth segment to a second bandwidth segment, or the first message is used to indicate that the operating bandwidth of the terminal device includes the first bandwidth segment and an extended portion of the first bandwidth segment; the extension part of the first bandwidth segment is adjacent to the first bandwidth segment in the frequency domain, the first bandwidth segment comprises a first uplink bandwidth segment and/or a first downlink bandwidth segment, and the second bandwidth segment comprises a second uplink bandwidth segment and/or a second downlink bandwidth segment.

In a possible implementation manner, the method further includes a sending unit, configured to: sending a second message to the network equipment on the first uplink bandwidth segment or the second uplink bandwidth segment, wherein the second message comprises CSI of the terminal equipment on the second downlink bandwidth segment; and/or transmitting a reference signal to the network device on the second uplink bandwidth segment.

In one possible implementation, the receiving unit is further configured to: and receiving an uplink authorization indication sent by the network device through the first message or a third message, where the third message includes the uplink authorization indication, the uplink authorization indication is used to indicate a frequency domain resource allocated by the network device to the terminal device on the first uplink bandwidth segment or on the second uplink bandwidth segment, and the frequency domain resource is used for transmission of the second message.

In one possible implementation, the receiving unit is further configured to: receiving configuration information sent by the network equipment through the first message or the fourth message; the fourth message includes configuration information for configuring the extension portion of the first bandwidth segment.

In a possible implementation manner, the sending unit is further configured to: sending channel state information of the terminal equipment on the extension part of the first bandwidth segment to the network equipment; and/or transmitting a reference signal to the network device at an extension portion of the first bandwidth segment.

In a ninth aspect, the present application provides an apparatus, which exists in the form of a chip product, and the apparatus includes a processor and a memory, the memory is configured to be coupled with the processor and stores necessary program instructions and data of the apparatus, and the processor is configured to execute the program instructions stored in the memory, so that the apparatus performs the functions of the terminal device in the method.

In a tenth aspect, an embodiment of the present application provides a terminal device, where the terminal device may implement a function executed by the terminal device in the foregoing method embodiment, where the function may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software comprises one or more modules corresponding to the functions.

In one possible design, the terminal device includes a processor and a communication interface, and the processor is configured to support the terminal device to execute the corresponding functions of the method. The communication interface is used for supporting communication between the terminal equipment and other network elements. The terminal device may also include a memory for coupling with the processor that retains program instructions and data necessary for the terminal device.

In an eleventh aspect, embodiments of the present application provide a computer-readable storage medium, which includes instructions that, when executed on a computer, cause the computer to perform any one of the methods provided in the seventh aspect.

In a twelfth aspect, embodiments of the present application provide a computer program product containing instructions, which when run on a computer, cause the computer to perform any one of the methods provided in the seventh aspect.

Drawings

FIG. 1 is a schematic diagram of a prior art bandwidth segment;

fig. 2 is a schematic diagram of a communication system architecture according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a base station according to an embodiment of the present disclosure;

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

fig. 5 is a first schematic signal interaction diagram of a method for adjusting an operating bandwidth according to an embodiment of the present application;

fig. 6 is a signal interaction diagram ii of a method for adjusting an operating bandwidth according to an embodiment of the present disclosure;

fig. 7 is a third schematic signal interaction diagram of a method for adjusting an operating bandwidth according to an embodiment of the present application;

FIG. 8 is a schematic diagram of an expanded portion of a bandwidth segment provided by an embodiment of the present application;

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

fig. 10 is a schematic structural diagram of a network device according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of a terminal device according to an embodiment of the present application.

Detailed Description

The embodiment of the application provides a method for adjusting a working bandwidth, which is applied to a scene of data transmission of terminal equipment. For example, the method is applied to a scenario in which the terminal device transmits uplink data through the uplink bandwidth segment and/or receives downlink data through the downlink bandwidth segment.

Fig. 2 is a schematic diagram of a communication system architecture to which the technical solution provided in the embodiment of the present application is applicable, where the communication system may include one or more network devices (e.g., base stations 100) (only 1 is shown in fig. 2) and one or more terminal devices 200 (only 1 is shown in fig. 2) connected to the base stations 100.

The base station 100 may be a device capable of communicating with the terminal device 200. The base station 100 may be a Base Transceiver Station (BTS) in global system for mobile communications (GSM) or Code Division Multiple Access (CDMA), a base station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), an evolved Node B (eNB, eNodeB) in LTE, or a gNB in NR, or a Transmission and Reception Point (TRP), or other network equipment of a 5G access network (e.g., a micro base station), or a base station in a future 5G network, and the like, and the present application is not limited thereto.

Terminal device 200 may be a wireless terminal that may be a device providing voice and/or other traffic data connectivity to a user, a handheld device having wireless connection capability, or other processing device connected to a wireless modem. A wireless terminal may communicate with one or more core networks via a Radio Access Network (RAN). The wireless terminal may be a mobile terminal such as a mobile telephone (or "cellular" telephone) or a computer having a mobile terminal. For example, the wireless terminal may be a portable, pocket, hand-held, computer-embedded, or vehicle-mounted mobile device, or may be a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, or a Personal Digital Assistant (PDA), or other devices. A wireless terminal may also be referred to as a User Equipment (UE), a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), a remote terminal (remote terminal), an access terminal (access terminal), a user agent (user agent), or a user device (user device), without limitation.

Fig. 3 shows a schematic structural diagram of a base station, which includes a portion 301 and a portion 302. The 301 part is mainly used for receiving and transmitting radio frequency signals and converting the radio frequency signals and baseband signals; the 302 part is mainly used for baseband processing, base station control and the like. Portion 301 may be generally referred to as a transceiver unit, transceiver, transceiving circuitry, or transceiver, etc. Part 302 is typically the control center of the base station and may be generally referred to as a processing unit.

The transceiver unit of section 301, which may also be referred to as a transceiver, or transceiver, etc., includes one or more antennas and a radio frequency unit, where the radio frequency unit is mainly used for radio frequency processing. Optionally, a device used for implementing the receiving function in the part 301 may be regarded as a receiving unit, and a device used for implementing the transmitting function may be regarded as a transmitting unit, that is, the part 301 includes a receiving unit and a transmitting unit. A receiving unit may also be referred to as a receiver, a receiving circuit, or the like, and a transmitting unit may be referred to as a transmitter, a transmitting circuit, or the like.

Section 302 may include one or more boards, each board may include one or more processors and one or more memories, the processors being configured to read and execute programs in the memories to implement baseband processing functions and control of the base station. If a plurality of single boards exist, the single boards can be interconnected to increase the processing capacity. As an alternative implementation, multiple boards may share one or more processors, multiple boards may share one or more memories, or multiple boards may share one or more processors at the same time. The memory and the processor may be integrated together or may be provided separately. In some embodiments, portions 301 and 602 may be integrated or may be separate. In addition, all functions in the part 302 may be integrated in one chip, or part of the functions may be integrated in one chip, so that another part of the functions is integrated in one or more other chips, which is not limited in this application.

Fig. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure, where the terminal device may include at least one processor 41, a communication interface 42, a memory 43, and a communication bus 44. It should be noted that the device structure shown in fig. 4 does not constitute a limitation of the terminal device, and may include more or less components than those shown in the drawings, or combine some components, or arrange different components, which is not limited in the embodiments of the present application. The following specifically describes each constituent component of the terminal device with reference to fig. 4:

the processor 41 is a control center of the terminal device, and may be a single processor or a collective term for a plurality of processing elements. For example, the processor 41 is a Central Processing Unit (CPU), and may be an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application, such as: one or more microprocessors (digital signal processors, DSPs), or one or more Field Programmable Gate Arrays (FPGAs). The processor 41 may perform various functions of the terminal device by running or executing software programs stored in the memory 43 and calling data stored in the memory 43, among other things.

In particular implementations, processor 41 may include one or more CPUs such as CPU0 and CPU1 shown in fig. 4 as one example. In particular implementations, the terminal device may include multiple processors, such as processor 41 and processor 45 shown in fig. 4, as one example. Each of these processors may be a single-Core Processor (CPU) or a multi-Core Processor (CPU). A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).

Communication interface 42 is used for communicating with other devices or communication networks, such as ethernet, RAN, Wireless Local Area Networks (WLAN), etc. The communication interface 42 may include a receiving unit implementing a receiving function and a transmitting unit implementing a transmitting function.

The memory 43 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disc, laser disc, optical disc, digital versatile disc, blu-ray disc, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 43, which may be separate, is coupled to the processor 41 via a communication bus 44. The memory 43 may also be integrated with the processor 41. The memory 43 is used for storing a software program for executing the scheme provided by the embodiment of the application, and is controlled by the processor 41 to execute.

The communication bus 44 may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an extended ISA (enhanced industry standard architecture) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 4, but this does not indicate only one bus or one type of bus.

An embodiment of the present application provides a method for adjusting a working bandwidth, which is described by taking a network device as a base station (e.g., a gbb) and a terminal device as a UE as an example, and as shown in fig. 5, the method includes:

501. the base station sends a first message to the UE, wherein the first message is used for indicating that the working bandwidth of the UE is switched from the first bandwidth segment to the second bandwidth segment. The first bandwidth segment comprises a first uplink bandwidth segment and/or a first downlink bandwidth segment, and the second bandwidth segment comprises a second uplink bandwidth segment and/or a second downlink bandwidth segment.

In this embodiment of the present application, the first message may be referred to as a bandwidth segment switching indication message; the first bandwidth segment is a source bandwidth segment and comprises a source uplink bandwidth segment and/or a source downlink bandwidth segment; the second bandwidth segment is a target bandwidth segment and comprises a target uplink bandwidth segment and/or a target downlink bandwidth segment. The bandwidth segment switching indication message may be used to indicate the UE to switch the activated uplink bandwidth segment from the source uplink bandwidth segment to the target uplink bandwidth segment, or to indicate the UE to switch the activated downlink bandwidth segment from the source downlink bandwidth segment to the target downlink bandwidth segment, or to indicate the UE to switch the activated uplink bandwidth segment and the activated downlink bandwidth segment from the source uplink bandwidth segment and the source downlink bandwidth segment to the target uplink bandwidth segment and the target downlink bandwidth segment, respectively.

In one possible design, the bandwidth segment switching indication message may be an RRC message, Downlink Control Information (DCI), or a frame of a Medium Access Control (MAC) layer, where the frame includes at least one MAC control element (MAC CE), and the at least one MAC CE may be used to indicate the UE to perform the switching of the bandwidth segment.

In one possible design, the bandwidth segment switching indication message may trigger (implicitly indicate) the UE to send the second message to the base station and/or trigger the UE to send the reference signal to the base station on the second uplink bandwidth segment. Wherein the second message includes CSI (which may also be referred to as CSI report) of the UE on the second downlink bandwidth segment. Therefore, the base station can make more accurate scheduling decision for the UE on the second uplink bandwidth segment and/or the second downlink bandwidth segment according to the CSI and/or the reference signal sent by the UE. For example, by selecting an accurate Modulation and Coding Scheme (MCS), the resource utilization efficiency can be effectively improved.

Further, the bandwidth segment switching indication message may further include at least one uplink scheduling information and/or at least one downlink scheduling information. The uplink scheduling information, i.e., an uplink grant (uplink grant) indication, is used to indicate a frequency domain resource allocated by the base station to the UE on the first uplink bandwidth segment or on the second uplink bandwidth segment, so that the UE sends the second message to the base station on the allocated frequency domain resource, and/or the UE sends the reference signal to the base station on the allocated frequency domain resource. The downlink scheduling information may include at least one of the following information: time-frequency resource information allocated by the base station to the UE, a modulation and coding scheme allocated by the base station to the UE, a Transport Block Size (TBS) allocated by the base station to the UE, and the number of transport blocks.

In a possible design, when the bandwidth segment switching indication message is DCI, the DCI may include a plurality of downlink control information formats (DCI formats), and the embodiment of the present invention is not limited thereto.

502. The UE receives a first message sent by the base station.

503. The base station sends an uplink authorization indication to the UE through a third message, where the third message includes the uplink authorization indication, and the uplink authorization indication is used to indicate a frequency domain resource allocated by the base station to the UE on the first uplink bandwidth segment or the second uplink bandwidth segment, and the frequency domain resource is used for transmission of the second message.

It should be noted that step 503 is an optional step. For example, if the bandwidth segment switching indication message includes an uplink grant indication, and the uplink resource included in the uplink grant indication may be used for the UE to send the second message, the base station may not perform step 503.

In one possible design, if the bandwidth segment switching indication message is used to indicate that the UE switches from the source downlink bandwidth segment to the target downlink bandwidth segment without changing the source uplink bandwidth segment, the frequency domain resource indicated by the uplink grant may include a frequency domain resource on the source uplink bandwidth segment. If the bandwidth segment switching indication message is used to indicate that the UE is switched from the source uplink bandwidth segment to the target uplink bandwidth segment, or the bandwidth segment switching indication message is used to indicate that the UE is switched from the source uplink bandwidth segment and the source downlink bandwidth segment to the target uplink bandwidth segment and the target downlink bandwidth segment, respectively, the frequency domain resource indicated by the uplink grant may be a frequency domain resource on the source uplink bandwidth segment or a frequency domain resource on the target uplink bandwidth segment. Wherein the frequency domain resource may be a PRB.

504. And the UE receives the uplink authorization indication sent by the base station through the third message.

It is understood that step 504 is an optional step, and if the base station performs step 503, the UE performs step 504.

505. And the UE sends a second message to the base station on the first uplink bandwidth segment or the second uplink bandwidth segment, and/or the UE sends a reference signal to the base station on the second uplink bandwidth segment. Wherein the second message may include CSI of the UE on the second downlink bandwidth segment.

In one possible design, assuming that the UE operates in a Frequency Division Duplex (FDD) mode, when the bandwidth segment switching indication message indicates that the UE switches from the source downlink bandwidth segment to the target downlink bandwidth segment, the UE may send a second message to the base station on the source uplink bandwidth segment. When the bandwidth segment switching indication message indicates that the UE switches from the source uplink bandwidth segment to the target uplink bandwidth segment, the UE may send a reference signal to the base station on the target uplink bandwidth segment, so that the base station measures CSI of the UE on the target uplink bandwidth segment. When the bandwidth segment switching indication message indicates that the UE is switched from the source uplink bandwidth segment and the source downlink bandwidth segment to the target uplink bandwidth segment and the target downlink bandwidth segment respectively, the UE can send a second message to the base station on the source uplink bandwidth segment or the target uplink bandwidth segment; further, the UE may transmit a reference signal to the base station on the target uplink bandwidth segment, and the second message and the reference signal may be transmitted by the UE at different times.

In one possible design, assuming that the UE operates in a Time Division Duplex (TDD) mode, a target uplink bandwidth segment and a target downlink bandwidth segment of the UE are the same (or have a small difference) in a frequency domain, when a bandwidth segment switching indication message indicates that the UE is switched from a source uplink bandwidth segment and a source downlink bandwidth segment to the target uplink bandwidth segment and the target downlink bandwidth segment, respectively, the UE may send a reference signal to the base station on the target uplink bandwidth segment, so that the base station measures CSI of the UE on the target uplink bandwidth segment, and further, the base station may obtain CSI of the UE on the target downlink bandwidth segment according to symmetry of a channel in the TDD mode. Assuming that the uplink bandwidth segment and the downlink bandwidth segment of the UE are different (or overlap little) in the frequency domain, when the bandwidth segment switching indication message indicates that the UE is switched from the source downlink bandwidth segment to the target downlink bandwidth segment, the UE may send a second message to the base station on the source uplink bandwidth segment, where the second message includes CSI of the UE on the second downlink bandwidth segment.

506. The base station receives a second message sent by the UE on the first uplink bandwidth segment or the second uplink bandwidth segment; and/or the base station receives the reference signal sent by the UE on the second uplink bandwidth segment.

In one possible design, assuming that the UE operates in the FDD mode, when the bandwidth segment switching indication message indicates that the UE switches from the source downlink bandwidth segment to the target downlink bandwidth segment, the base station may receive, on the source uplink bandwidth segment, a second message sent by the UE. When the bandwidth segment switching indication message indicates that the UE is switched from the source uplink bandwidth segment to the target uplink bandwidth segment, the base station may receive, on the target uplink bandwidth segment, a reference signal sent by the UE, so that the base station may measure CSI of the UE on the target uplink bandwidth segment. When the bandwidth segment switching indication message indicates that the UE is switched from the source uplink bandwidth segment and the source downlink bandwidth segment to the target uplink bandwidth segment and the target downlink bandwidth segment, respectively, the base station may receive, on the source uplink bandwidth segment or on the target uplink bandwidth segment, a second message sent by the UE, further, the base station may receive, on the target uplink bandwidth segment, a reference signal sent by the UE, and the second message and the reference signal may be received by the base station at different times.

In a possible design, assuming that the UE operates in the TDD mode, a target uplink bandwidth segment and a target downlink bandwidth segment of the UE are the same (or have a small difference) in a frequency domain, when the bandwidth segment switching indication message indicates that the UE is switched from the source uplink bandwidth segment and the source downlink bandwidth segment to the target uplink bandwidth segment and the target downlink bandwidth segment, respectively, the base station may receive a reference signal sent by the UE on the target uplink bandwidth segment, so that the base station may measure channel state information of the UE on the target uplink bandwidth segment, and may obtain channel state information of the UE on the target downlink bandwidth segment at least according to symmetry of a channel in the TDD mode. Assuming that the uplink bandwidth segment and the downlink bandwidth segment of the UE are different (or overlap little) in the frequency domain, when the bandwidth segment switching indication message indicates that the UE is switched from the source downlink bandwidth segment to the target downlink bandwidth segment, the base station may receive a second message sent by the UE on the source uplink bandwidth segment, so that the base station may obtain channel state information of the UE on the target downlink bandwidth segment.

507. And the base station sends a message to the UE on the target downlink bandwidth segment, or the base station receives the message sent by the UE on the target uplink bandwidth segment.

In one possible design, if the bandwidth segment switching indication message is used to indicate that the UE is switched from the source downlink bandwidth segment to the target downlink bandwidth segment, the base station sends a message to the UE on the target downlink bandwidth segment. Correspondingly, the UE receives a message sent by the base station on the target downlink bandwidth segment, and sends a feedback message to the base station on the source uplink bandwidth segment, where the feedback message includes an Acknowledgement (ACK) character or a Negative Acknowledgement (NACK) character.

In one possible design, if the bandwidth segment switching indication message indicates that the UE is switched from the source uplink bandwidth segment to the target uplink bandwidth segment, the base station receives a message sent by the UE in the target uplink bandwidth segment and sends a feedback message to the UE in the source downlink bandwidth segment.

Therefore, the base station can trigger the UE to send the CSI and/or the reference signal through the bandwidth segment switching indication message (the first message), and can enable the base station to obtain the channel state information of the UE on the target activated uplink bandwidth segment and/or the target activated downlink bandwidth segment. In this way, the base station may make a more accurate scheduling decision for the UE on the target uplink bandwidth segment and/or the target downlink bandwidth segment according to the CSI and/or the reference signal sent by the UE. For example, the resource utilization efficiency can be effectively improved by selecting an accurate MCS. Moreover, the trigger-based (trigger-based) or on-demand (on-demand) transmission form can effectively reduce communication overhead and reduce energy consumption of the UE.

Another embodiment of the present application provides a method for adjusting a working bandwidth, which takes a network device as a base station and a terminal device as a UE as an example, as shown in fig. 6, the method includes:

601. and the UE periodically sends a second message to the base station on the first uplink bandwidth segment, and/or the UE periodically sends a reference signal to the base station on the second uplink bandwidth segment. Wherein the second message includes CSI of the UE on the second downlink bandwidth segment.

Wherein, the first uplink bandwidth segment is a source uplink bandwidth segment; the second uplink bandwidth segment is a target uplink bandwidth segment, and the second downlink bandwidth segment is a target downlink bandwidth segment. The UE periodically sending the second message to the base station on the first uplink bandwidth segment comprises the UE periodically sending CSI of the UE on a target downlink bandwidth segment and CSI of the UE on other inactive downlink bandwidth segments to the base station on a source uplink bandwidth segment. The UE sending the reference signal to the base station on the second uplink bandwidth segment includes the UE sending the reference signal to the base station on the target uplink bandwidth segment, and the UE sending the reference signal to the base station on other inactive bandwidth segments.

In one possible design, when the UE operates in the FDD mode, the base station may configure a measurement gap (measurement gap) for the UE in a time domain, so that the UE is enabled to measure channel state information of the UE on an inactive downlink bandwidth segment and/or send a reference signal on an inactive uplink bandwidth segment. And in the measurement interval, the base station does not send a message to the UE on the downlink bandwidth segment activated by the UE.

In one possible design, the channel state information report may include at least one or more of the following information: CQI, RI, PMI, PTI, RSSI, RSRP and RSRQ.

602. And the base station receives a second message periodically sent by the UE on the first uplink bandwidth segment, and/or the base station receives a reference signal periodically sent by the UE on the second uplink bandwidth segment.

It can be appreciated that the base station can measure the CSI of the UE on the target uplink bandwidth segment through the reference signal transmitted by the UE on the target uplink bandwidth segment.

Therefore, the base station can make more accurate scheduling decision for the UE on the second uplink bandwidth segment and/or the second downlink bandwidth segment according to the CSI and/or the reference signal sent by the UE.

603. The base station sends a first message to the UE, wherein the first message is used for indicating that the working bandwidth of the UE is switched from the first bandwidth segment to the second bandwidth segment. The first bandwidth segment comprises a first uplink bandwidth segment and/or a first downlink bandwidth segment, and the second bandwidth segment comprises a second uplink bandwidth segment and/or a second downlink bandwidth segment.

The specific process may refer to step 501.

604. The UE receives a first message sent by the base station.

605. And the base station sends a message to the UE on the target downlink bandwidth segment, or the base station receives the message sent by the UE on the target uplink bandwidth segment.

The specific process may refer to step 507.

In the embodiment of the present application, the UE may periodically send, to the base station, the CSI of the UE on the target downlink bandwidth segment and the CSI of the UE on other inactive downlink bandwidth segments on the source uplink bandwidth segment. Further, the UE may send a reference signal to the base station on the target uplink bandwidth segment and on other inactive bandwidth segments, so that the base station may obtain channel state information on all configured bandwidth segments of the UE, so that the base station may adjust the working bandwidth of the terminal device more flexibly and accurately, that is, switch the source bandwidth segment of the terminal device to the target bandwidth segment with better channel condition, and improve the utilization efficiency of the bandwidth segment resources of the terminal device.

Another embodiment of the present application provides a method for adjusting a working bandwidth, which takes a network device as a base station and a terminal device as a UE as an example, as shown in fig. 7, the method includes:

701. the base station sends configuration information to the UE through a fourth message; the fourth message includes configuration information for configuring an extension portion of the first bandwidth segment, the extension portion of the first bandwidth segment being adjacent to the first bandwidth segment in the frequency domain.

The first bandwidth segment comprises a first uplink bandwidth segment and/or a first downlink bandwidth segment. The first bandwidth segment is a source bandwidth segment, that is, a bandwidth segment activated by the current UE, and includes an uplink bandwidth segment activated by the current UE (a first uplink bandwidth segment) and/or a downlink bandwidth segment activated by the current UE (a first downlink bandwidth segment). For example, the terminal device may detect a Physical Downlink Control Channel (PDCCH) on the first downlink bandwidth segment, for example, detection, search, and blind detection of the DCI. The base station may configure a Physical Uplink Control Channel (PUCCH) for the terminal device on the first uplink bandwidth segment, for example, configure an uplink resource for the terminal device to send CSI on the first uplink bandwidth segment.

The fourth message may be an RRC message, and the configuration information in the RRC message may be used to configure the UE in the extension portion of the first bandwidth segment and the UE in the extension portions of other inactive bandwidth segments. In another possible design, the configuration information in the RRC message may be used to configure an extension portion of a portion of the bandwidth segment of the UE. For example, the extension portion of the downlink bandwidth segment of the UE is configured by default.

In one possible design, the extension portion of the first downlink bandwidth segment may be an extension of a Physical Downlink Shared Channel (PDSCH) in a frequency domain; the extension portion of the first uplink bandwidth segment may be an extension of a Physical Uplink Shared Channel (PUSCH) in a frequency domain. Illustratively, as shown in fig. 8, the extension portion of the first uplink bandwidth segment may include an extension portion 1 and an extension portion 2 on the PUSCH. The UE may receive or transmit a corresponding message on the first bandwidth segment (the first uplink bandwidth segment and/or the first downlink bandwidth segment) and the extended portion of the first bandwidth segment.

Optionally, the base station may send a trigger message to the UE, where the trigger message may be used to trigger the UE to send CSI of the UE on the extended portion of the first downlink bandwidth segment to the base station, and/or to trigger the UE to send a reference signal on the extended portion of the first uplink bandwidth segment. The trigger message may be an RRC message or downlink control information.

It should be noted that step 701 is an optional step, that is, the configuration information may also be sent through the first message in the subsequent step 705.

702. The UE receives the configuration information sent by the base station through a fourth message; the fourth message includes configuration information for configuring the extension portion of the first bandwidth segment.

703. The UE sends CSI of the UE on an extended part of the first bandwidth segment to the base station, and/or the UE sends a reference signal to the base station on the extended part of the first bandwidth segment.

The UE may send CSI of the UE on the extension portion and/or a reference signal on the extension portion to the base station so that the base station makes a more accurate scheduling decision on the extension portion.

Wherein the CSI may comprise at least one or more of the following information: CQI, RI, PMI, PTI, RSSI, RSRP and RSRQ.

It should be noted that step 703 is an optional step, and the UE may choose not to send the CSI or the reference signal to the base station, or the UE may send the CSI of the UE on the extension portion of the first bandwidth segment to the base station after the subsequent step 706, and/or the UE sends the reference signal to the base station on the extension portion of the first bandwidth segment, which is not limited in this application.

704. The base station receives CSI sent by the UE on the extension part of the first bandwidth segment, and/or the base station receives a reference signal sent by the UE on the extension part of the first bandwidth segment.

It should be noted that step 704 is an optional step, and if the UE performs step 703, the base station performs step 704. If the UE does not perform step 703 or the base station receives the CSI and/or the reference signal sent by the UE, the base station may estimate the CSI of the corresponding extension portion according to the CSI of the currently activated bandwidth segment. This is because the first bandwidth segment is adjacent to the extension portion of the first bandwidth segment in the frequency domain, and the network device can more accurately estimate the CSI of the terminal device on the extension portion.

705. The base station sends a first message to the UE, wherein the first message is used for indicating that the working bandwidth of the UE comprises a first bandwidth segment and an extension part of the first bandwidth segment.

In one possible design, the first message may be DCI, and the DCI may include one or more downlink scheduling information and/or uplink scheduling information. The downlink scheduling information may be used to indicate that the PDSCH of the UE includes the first downlink bandwidth segment and an extended portion of the first downlink bandwidth segment, i.e., the frequency domain width of the PDSCH is expanded. In addition, the downlink scheduling information does not change the configuration of the PDCCH of the UE, that is, the frequency domain range of the physical downlink shared channel detected by the UE is not expanded. The uplink scheduling information may be used to indicate that the PUSCH of the UE includes the first uplink bandwidth segment and an extended portion of the first uplink bandwidth segment, i.e., the frequency domain width of the PUSCH is expanded. And, the uplink scheduling information does not change the PUCCH of the UE.

In one possible design, in the case that the base station does not send the trigger message to the UE, the first message may be used to trigger the UE to send CSI of the UE on the extended portion of the first downlink bandwidth segment to the base station and/or to trigger the UE to send a reference signal on the extended portion of the first uplink bandwidth segment.

706. The UE receives a first message sent by the base station.

It should be noted that, step 703 and step 704 may be executed after step 706, and the execution order of step 703 and step 704 is not limited in this embodiment of the application.

707. And the base station sends a message to the UE on the target downlink bandwidth segment, or the base station receives the message sent by the UE on the target uplink bandwidth segment.

The specific process may refer to step 507.

In this way, the base station may initially configure the UE with a smaller operating bandwidth. According to the real-time requirement of the UE, the base station can expand the working bandwidth of the UE through the first message, so that the resource waste caused by always configuring a larger bandwidth segment for the UE can be avoided, and the resource utilization rate can be improved. Moreover, the base station initially configures a smaller working bandwidth for the UE, which means that the base station can serve more UEs, the system capacity can be increased, and the resource utilization rate can also be improved. Furthermore, the embodiment of the application can flexibly change the working bandwidth of the user under the condition of not changing the configuration of the physical uplink control channel and the physical downlink control channel of the terminal equipment, and avoids the communication overhead caused by the bandwidth switching operation.

Further, the base station may trigger the UE to send the UE channel state information on the extended portion of the first bandwidth segment to the base station through the trigger message or the first message, and/or trigger the UE to send the reference signal on the extended portion of the first bandwidth segment to the base station. In this way, the base station may make more accurate scheduling decisions for the UE over the extended portion of the first bandwidth segment. For example, the resource utilization efficiency can be effectively improved by selecting an accurate modulation and coding mode.

The above description mainly introduces the solutions provided in the embodiments of the present application from the perspective of network devices and terminal devices. It is understood that the network device and the terminal device include hardware structures and/or software modules for performing the respective functions in order to implement the functions. Those skilled in the art will readily appreciate that the algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or a combination of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiment of the present application, the network device and the terminal device may be divided into functional modules according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation.

In the case of adopting the functional modules divided corresponding to the respective functions, fig. 9 shows a schematic diagram of a possible structure of the network device 9 involved in the foregoing embodiment, where the network device includes: a transmitting unit 901 and a receiving unit 902. In this embodiment, the sending unit 901 may be configured to send, to the terminal device, a first message, where the first message is used to instruct the terminal device to switch the operating bandwidth from the first bandwidth segment to the second bandwidth segment, or the first message is used to instruct the terminal device to switch the operating bandwidth from the first bandwidth segment to the second bandwidth segment. In the method embodiments shown in fig. 5, fig. 6 and fig. 7, the sending unit 901 is configured to support the network device to perform processes 501, 503 and 507 in fig. 5, processes 603 and 605 in fig. 6, and processes 701, 705 and 707 in fig. 7. The receiving unit 902 is configured to support the network device to perform processes 506 and 507 in fig. 5, processes 602 and 605 in fig. 6, and processes 704 and 707 in fig. 7. All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

In the case of an integrated unit, fig. 10 shows a schematic diagram of a possible structure of the network device involved in the above-described embodiment. In this application, the network device may include a processing module 1001, a communication module 1002, and a storage module 1003. The processing module 1001 is used for controlling hardware devices and application software of each part of the network device; the communication module 1002 is configured to receive an instruction sent by another device using a communication method such as wireless fidelity (WiFi), and may also send data of the network device to the other device; the storage module 1003 is used for storing software programs of the network device, storing data, running software, and the like. The processing module 1001 may be a processor or a controller, such as a CPU, a general purpose processor, a digital signal processor DSP, an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. A processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a DSP and a microprocessor, or the like. The communication module 1002 may be a transceiver, a transceiver circuit or a communication interface, etc. The storage module 1003 may be a memory.

In the case of dividing each functional module by corresponding functions, fig. 11 shows a possible structural diagram of the terminal device 11 according to the foregoing embodiment, where the terminal device includes: a receiving unit 1101 and a transmitting unit 1102. In this embodiment, the receiving unit 1101 may be configured to receive a first message sent by a network device, where the first message is used to instruct the terminal device to switch the operating bandwidth from a first bandwidth segment to a second bandwidth segment, or the first message is used to instruct the terminal device to switch the operating bandwidth from the first bandwidth segment to the second bandwidth segment. In the method embodiments shown in fig. 5, fig. 6 and fig. 7, the receiving unit 1101 is configured to support the terminal device to perform processes 502, 504 and 507 in fig. 5, processes 604 and 605 in fig. 6, and processes 702, 706 and 707 in fig. 7. The sending unit 1102 is configured to support the terminal device to perform the process 505 in fig. 5, the process 601 in fig. 6, and the process 703 in fig. 7. All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

In the case of an integrated unit, fig. 12 shows a schematic diagram of a possible structure of the terminal device involved in the above-described embodiment. In this application, the terminal device may include a processing module 1201, a communication module 1202, and a storage module 1203. The processing module 1201 is configured to control hardware devices and application software of each part of the terminal device; the communication module 1202 is configured to receive an instruction sent by another device using a communication method such as WiFi, and may also send data of the terminal device to the other device; the storage module 1203 is used for storing software programs of the terminal device, storing data, running software and the like. The processing module 1201 may be a processor or a controller, and may be, for example, a CPU, a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. A processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a DSP and a microprocessor, or the like. The communication module 1202 may be a transceiver, a transceiver circuit or a communication interface, etc. The storage module 1203 may be a memory.

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

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

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 embodiments of the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to encompass such modifications and variations.

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

Claims

1. A method of adjusting operating bandwidth, comprising:

the method comprises the steps that a network device sends a first message to a terminal device, wherein the first message is used for indicating that the working bandwidth of the terminal device comprises a first bandwidth segment and an extension part of the first bandwidth segment;

wherein the expanded portion of the first bandwidth segment is adjacent to the first bandwidth segment in the frequency domain, and the first bandwidth segment includes a first uplink bandwidth segment and/or a first downlink bandwidth segment.

2. The method of claim 1, further comprising:

the network equipment sends configuration information to the terminal equipment through the first message or the fourth message; the fourth message includes the configuration information, the configuration information for configuring an extension portion of the first bandwidth segment.

3. The method of claim 1, further comprising:

the network equipment receives the channel state information CSI of the terminal equipment on the extension part of the first bandwidth segment sent by the terminal equipment, and/or

And the network equipment receives the reference signal sent by the terminal equipment at the extension part of the first bandwidth segment.

4. The method of claim 3, wherein the CSI comprises at least one of the following information:

channel quality indicator CQI, rank indicator RI, precoding matrix indicator PMI, precoding type indicator PTI, received signal strength indicator RSSI, reference signal received power RSRP and reference signal received quality RSRQ.

5. A method of adjusting operating bandwidth, comprising:

the method comprises the steps that a terminal device receives a first message sent by a network device, wherein the first message is used for indicating that the working bandwidth of the terminal device comprises a first bandwidth segment and an extension part of the first bandwidth segment;

6. The method according to claim 5, wherein if the first message is used to indicate that the operating bandwidth of the terminal device includes a first bandwidth segment and an extension portion of the first bandwidth segment, the method further comprises:

the terminal equipment receives configuration information sent by the network equipment through the first message or the fourth message; the fourth message includes the configuration information, the configuration information for configuring an extension portion of the first bandwidth segment.

7. The method of claim 6, further comprising:

the terminal equipment sends Channel State Information (CSI) of the terminal equipment on an extended part of the first bandwidth segment to the network equipment; and/or

And the terminal equipment sends a reference signal to the network equipment at the expansion part of the first bandwidth segment.

8. The method of claim 7, wherein the CSI comprises at least one of the following information:

9. A network device, comprising:

a sending unit, configured to send a first message to a terminal device, where the first message is used to indicate that an operating bandwidth of the terminal device includes a first bandwidth segment and an extended portion of the first bandwidth segment;

10. The network device of claim 9, wherein the sending unit is further configured to:

sending configuration information to the terminal equipment through the first message or the fourth message; the fourth message includes the configuration information, the configuration information for configuring an extension portion of the first bandwidth segment.

11. The network device of claim 10, further comprising a receiving unit configured to:

receiving the channel state information CSI sent by the terminal equipment on the extension part of the first bandwidth segment, and/or

And receiving the reference signal sent by the terminal equipment at the extension part of the first bandwidth segment.

12. The network device of claim 11, wherein the CSI comprises at least one of the following information:

13. A terminal device, comprising:

a receiving unit, configured to receive a first message sent by a network device, where the first message is used to indicate that an operating bandwidth of the terminal device includes a first bandwidth segment and an extended portion of the first bandwidth segment;

14. The terminal device of claim 13, wherein the receiving unit is further configured to:

receiving configuration information sent by the network equipment through the first message or the fourth message; the fourth message includes the configuration information, the configuration information for configuring an extension portion of the first bandwidth segment.

15. The terminal device according to claim 14, wherein the terminal device further comprises a transmitting unit, and the transmitting unit is configured to:

sending, to the network device, channel state information, CSI, of the terminal device on an extension portion of the first bandwidth segment; and/or

Transmitting a reference signal to the network device at an extension portion of the first bandwidth segment.

16. The terminal device of claim 15, wherein the CSI comprises at least one of the following information:

17. A computer-readable storage medium storing computer instructions which, when executed on a network device, cause the network device to perform the method of adjusting operating bandwidth as claimed in any one of claims 1-4.

18. A computer-readable storage medium, storing computer instructions, which, when executed on a terminal device, cause the terminal device to perform the method for adjusting operating bandwidth according to any one of claims 5-8.