WO2019062415A1

WO2019062415A1 - Information transmission method and device

Info

Publication number: WO2019062415A1
Application number: PCT/CN2018/102364
Authority: WO
Inventors: 李华; 唐浩; 刘烈海; 唐臻飞; 阿布多利⋅贾瓦德; 彭金磷
Original assignee: 华为技术有限公司
Priority date: 2017-09-29
Filing date: 2018-08-25
Publication date: 2019-04-04

Abstract

Provided in the present application are an information transmission method and device, used for determining the channel bandwidth of a user equipment (UE) in a large carrier bandwidth scenario. The method comprises: a network device sends first information to a terminal, the first information being used to indicate the location of a channel bandwidth of the terminal, the channel bandwidth being a radio frequency bandwidth, and the radio frequency bandwidth comprising an uplink or downlink transmission resource; and the terminal receives the first information and determines the location of the channel bandwidth of the terminal according to the first information.

Description

Information transmission method and device

This application claims the priority of the Chinese patent application filed on September 29, 2017, the Chinese Patent Office, application number 201710912343.9, and the application name is "an information transmission method and device", and the request is submitted on May 11, 2018. The priority of the Chinese Patent Application No. 201810451339.1, the entire disclosure of which is incorporated herein in

Technical field

The present application relates to the field of communications technologies, and in particular, to an information transmission method and apparatus.

Background technique

With the increase of mobile users and the emergence of large-capacity services (such as high-definition video services), an important design for the evolution of mobile communication to the fifth-generation mobile communication technology (5th-generation, 5G) is to introduce large bandwidth; Larger, the more bandwidth resources used for data transmission, the greater the amount of traffic supported. Among them, 5G can also be called new radio (NR). Therefore, the carrier bandwidth in the NR is increased compared to the carrier bandwidth of the long term evolution (LTE) communication system, but considering the cost of the user equipment (UE) and the traffic of the UE, in the NR The bandwidth supported by the UE in the communication system may be less than the carrier bandwidth. The bandwidth supported by the UE may be referred to as the radio frequency bandwidth of the UE or the channel bandwidth called the UE.

The standard conference of the 3rd generation poartnership project (3GPP) introduced a bandwidth part (BWP), also called a carrier bandwidth part, in the discussion. The BWP includes a number of consecutive resource units in the frequency domain, such as a resource block (RB). After the introduction of the BWP and the increase of the carrier bandwidth, how to plan the channel bandwidth of the UE still needs further research.

Summary of the invention

The present application provides an information transmission method and apparatus for further studying a channel bandwidth of a UE after a BWP is introduced and a carrier bandwidth is increased.

In a first aspect, an embodiment of the present application provides an information transmission method, including:

Sending the first information, where the first information is used to indicate the location of the channel bandwidth of the terminal, the channel bandwidth is a radio frequency bandwidth, and the radio frequency bandwidth includes an uplink or downlink transmission resource.

Specifically, the executed device for transmitting the first information may be a network device, or may be a device disposed in the network device. The device that is disposed in the network device may be a chip, a module, a circuit, or the like, which is not specifically limited in this application. Specifically, the network device may send the first information to the terminal.

Through the foregoing solution, the network device specifically indicates the location of the channel bandwidth of the terminal to the terminal by using the first information, so that the terminal adjusts the channel bandwidth at the indicated location, and receives data on the corresponding frequency domain resource, so as to prevent the terminal from using the carrier bandwidth. The external signal is received and affects the receiving performance of the terminal.

The first information may be information specific to the terminal.

In a possible design, the first information includes an absolute frequency channel number corresponding to a reference frequency point in a channel bandwidth of the terminal, where a reference frequency point in a channel bandwidth of the terminal is the terminal a center frequency point in a channel bandwidth; a reference frequency point in a channel bandwidth of the terminal is a minimum frequency point in a channel bandwidth of the terminal; or a reference frequency point in a channel bandwidth of the terminal is a channel of the terminal The maximum frequency in the bandwidth.

In one possible design, the first information includes an offset of a center frequency point of a channel bandwidth of the terminal from an upconverted carrier frequency position of the terminal.

In a possible design, the offset of the center frequency of the channel bandwidth of the terminal relative to the upconverted carrier frequency position of the terminal is SC _offset subcarriers, and SC _offset is an integer. The subcarrier spacing of the SC _offset subcarriers is a minimum subcarrier spacing configured on a carrier, a minimum subcarrier spacing configurable on a carrier, or a preconfigured subcarrier spacing. Or the method further includes: sending third information, where the third information is used to indicate a subcarrier spacing of the SC _offset subcarriers.

In a possible design, the offset of the center frequency point in the channel bandwidth of the terminal relative to the upconverted carrier frequency position of the terminal is Rs _offset global frequency grid or Rs _offset channel grid. Rs _offset is an integer.

In one possible design, the first information includes an offset of a center frequency of a channel bandwidth of the terminal from a center subcarrier of a resource cell.

In a possible design, the offset of the center frequency point in the channel bandwidth of the terminal relative to the center subcarrier of the resource cell is

Global frequency grid or

Channel grid,

Is an integer.

Subcarriers. among them,

As an integer, the

The subcarrier spacing corresponding to the subcarriers is the subcarrier spacing corresponding to the resource grid. The subcarrier spacing corresponding to the resource grid is a minimum subcarrier spacing configured on a carrier, a minimum subcarrier spacing configurable on a carrier, or a preconfigured subcarrier spacing. Or the method further includes: transmitting fourth information, where the fourth information is used to indicate a subcarrier spacing of the resource grid.

Through the foregoing solution, when the BWP is configured, or when the channel bandwidth of the terminal is configured for the BWP, the network device can flexibly adjust the location of the channel bandwidth of the terminal, thereby avoiding that the channel bandwidth of the terminal is outside the carrier bandwidth, thereby avoiding Interference with the reception of the terminal.

In a possible design, the first information is used to indicate a location of a channel bandwidth of the terminal, where: the first information is used to indicate a location of a channel bandwidth of the terminal, and the one channel bandwidth corresponds to a location. The bandwidth portion BWP of the terminal; the BWP of the one of the terminals includes a part of the continuous frequency domain resources in the carrier bandwidth.

In a possible design, the first information may include an offset of the nth resource unit and the reference resource unit in a frequency domain of the channel bandwidth of the terminal, where: n is less than or equal to a positive integer of M, where M is the number of resource units in the channel bandwidth of the terminal; the reference resource unit is a predefined resource unit or a reference point of a BWP of the terminal, and the BWP of the terminal includes a carrier Part of a continuous frequency domain resource in bandwidth.

Through the above design, when the network device configures the BWP, or when configuring the channel bandwidth of the terminal for the BWP, the location of the channel bandwidth of the terminal can be flexibly adjusted by using the offset from the reference resource unit to indicate the location of the channel bandwidth of the terminal. Therefore, the part of the channel whose bandwidth is outside the carrier bandwidth is avoided, thereby avoiding interference to the reception of the terminal.

In a possible design, the n is equal to 1; that is, the first information includes an edge PRB of a lower boundary in a channel bandwidth of the terminal and an offset of the reference resource unit in the frequency domain;

The n is equal to the M; that is, the first information includes an offset of an edge PRB of an upper boundary in a channel bandwidth of the terminal and a reference resource unit in a frequency domain;

If the M is an even number, the n is equal to M/2 or M/2+1; or if the M is an odd number, the n is equal to (N+1)/2. That is, the first information includes the offset of the central PRB in the channel bandwidth of the terminal and the reference resource unit in the frequency domain.

In a possible design, the reference resource unit is the qth resource unit in the BWP of the terminal, and the q is an integer whose positive integer is less than or equal to Q, where Q is in the BWP of the terminal. The number of resource units. That is, the first information may include an offset of the nth resource unit in the channel bandwidth of the terminal and the qth resource unit in the BWP of the terminal in the frequency domain.

Optionally, the q is equal to 1; the q is equal to the Q; if the Q is an even number, the q is equal to Q/2 or Q/2+1; or if the Q is an odd number, the q Equal to (Q+1)/2.

Through the above design, the network device indicates the location of the channel bandwidth of the terminal by the relative offset between the location of the channel bandwidth of the terminal and the location of the BWP, and ensures that the channel bandwidth of the terminal is within the carrier bandwidth, thereby avoiding interference to the reception of the terminal.

In a possible design, the first information is used to indicate that the first resource unit in the channel bandwidth of the terminal is the same as the first resource unit in the BWP of the terminal, and the channel bandwidth of the terminal The Xth resource unit is the same as the Yth resource unit of the BWP of the terminal, or the i th resource element of the terminal is the same as the jth resource unit of the BWP of the terminal, where: The X is equal to the number of resource units in the channel bandwidth of the terminal, and the Y is equal to the number of resource units in the BWP of the terminal; if X is an even number, i is equal to X/2 or X/2+1 ; if X is an odd number, i is equal to (X+1)/2; if Y is an even number, j is equal to Y/2 or Y/2+1; if Y is an odd number, j is equal to (Y+1)/2; The BWP of the terminal includes a part of continuous frequency domain resources in the carrier bandwidth.

The above design pre-defines the relative positional relationship between several BWPs and the channel bandwidth of the terminal. The network device can indicate the location relationship between a certain type of BWP and the channel bandwidth of the terminal, and ensure that the channel bandwidth of the terminal is within the carrier bandwidth, thereby avoiding interference to the receiving of the terminal.

In this application, one mode is: the size of the channel bandwidth of the terminal may be predefined; and another method is that the network device side configures the channel bandwidth of the terminal to the terminal, and specifically, the network device may also be to the terminal. Sending the second information, where the second information is used to indicate the size of the channel bandwidth of the terminal. The network device side may carry the first information and the second information in the same signaling and send the information to the terminal, and may also be carried in different signaling and sent to the terminal. In another aspect, the channel bandwidth of the terminal is determined according to the configured correspondence and the bandwidth of the BWP. Specifically, the terminal receives the configuration information of the BWP, and the configuration information of the BWP includes the bandwidth of the BWP. Determining a channel bandwidth of the terminal corresponding to the BWP according to the configured correspondence relationship and the bandwidth of the BWP; wherein the correspondence between the configuration is a correspondence between a channel bandwidth of the terminal and a transmission bandwidth of the terminal side. The terminal side transmission configuration bandwidth corresponding to a channel bandwidth size is the number of resource units in the one channel bandwidth that can be used for transmitting data; the channel bandwidth of the terminal is equal to the first channel bandwidth size, the first The channel bandwidth size is equal to the minimum value in the first set; the terminal side transmission configuration bandwidth size included in the first set is greater than or equal to the bandwidth of the BWP.

Through the above design, for different terminals, the channel bandwidth of the terminal corresponding to different BWPs can be configured according to requirements, thereby improving the flexibility of the BWP configuration application.

In a second aspect, the embodiment of the present application further provides an information transmission method, where the method includes:

Receiving the first information, determining a location of a channel bandwidth of the terminal according to the first information. The first information is used to indicate a location of a channel bandwidth of the terminal, where the channel bandwidth is a radio frequency bandwidth, and the radio frequency bandwidth includes uplink or downlink transmission resources. The main body that receives the first information may be a terminal, or may be a device disposed in the terminal. The device that is disposed in the terminal may be a chip, a module, or a circuit, which is not specifically limited in this application.

For a specific content included in the first information, refer to the specific description of the first information in the first aspect, which is not specifically limited herein.

In a possible design, the method may further include: receiving second information, where the second information is used to indicate a size of a channel bandwidth of the terminal, so that the terminal is capable of determining a channel bandwidth of the terminal based on the second information. size.

In a possible design, the method may further include: receiving third information, where the third information is used to indicate a subcarrier spacing corresponding to the SC _offset subcarriers.

In one possible design, the method may further include receiving fourth information, the fourth information being used to indicate a subcarrier spacing of the resource grid.

In a possible design, the method may further include: receiving configuration information of the BWP, where the configuration information of the BWP includes a bandwidth of the BWP; and determining the BWP according to the configured correspondence and the bandwidth of the BWP. The corresponding channel size of the terminal; wherein the corresponding relationship of the configuration is a correspondence between a channel bandwidth size of the terminal and a transmission bandwidth of the terminal side; the channel bandwidth of the terminal is equal to the first channel bandwidth. The size, the first channel bandwidth corresponds to a minimum value in the first set; and the terminal side transmission configuration bandwidth size included in the first set is greater than or equal to a bandwidth size of the BWP.

Based on the same inventive concept as the first aspect, the third embodiment provides a device, which may be a network device or a device in a network device, and the device may include a generating module and a sending module. The modules may perform the corresponding functions performed by the network device in any of the above design examples of the first aspect, specifically:

Generating a module for generating first information;

And a sending module, configured to send the first information, where the first information is used to indicate a location of a channel bandwidth of the terminal, where the channel bandwidth is a radio frequency bandwidth, and the radio frequency bandwidth includes an uplink or downlink transmission resource.

In a possible design, the sending module is further configured to send second information, where the second information is used to indicate a size of a channel bandwidth of the terminal.

In a possible design, the sending module is further configured to send third information, where the third information is used to indicate a subcarrier spacing corresponding to the SC _offset subcarriers.

In a possible design, the sending module is further configured to send fourth information, where the fourth information is used to indicate a subcarrier spacing of the resource cell.

In a fourth aspect, the embodiment of the present application further provides a network device, where the network device includes a processor, and is used to implement the function of the network device in the method described in the foregoing first aspect. The network device can also include a memory for storing program instructions and data. The memory is coupled to the processor, and the processor can invoke and execute program instructions stored in the memory for implementing the functions of the network device in the method described in the first aspect above. The network device can also include a transceiver for the network device to communicate with other devices. Illustratively, the other device is a terminal.

In one possible device, the network device includes:

transceiver;

a memory for storing program instructions;

a processor, configured to generate first information, and send the first information by using the transceiver, where the first information is used to indicate a location of a channel bandwidth of the terminal, the channel bandwidth is a radio frequency bandwidth, and the radio frequency bandwidth is It includes uplink or downlink transmission resources.

In a possible design, the processor is further configured to send, by using a transceiver, second information, where the second information is used to indicate a size of a channel bandwidth of the terminal.

In a possible design, the processor is further configured to send, by using a transceiver, third information, where the third information is used to indicate a subcarrier spacing corresponding to the SC _offset subcarriers.

In a possible design, the processor is further configured to send, by using a transceiver, fourth information, where the fourth information is used to indicate a subcarrier spacing of the resource cell.

Based on the same inventive concept as the second aspect, the fifth embodiment provides a device, which may be a terminal or a device in a terminal, and the device includes a receiving module and a determining module. The corresponding functions of the terminal in any of the design examples of the first aspect may be performed, specifically:

The receiving module is configured to receive the first information, where the first information is used to indicate a location of a channel bandwidth of the terminal, where the channel bandwidth is a radio frequency bandwidth, and the radio frequency bandwidth includes uplink or downlink transmission resources.

And a determining module, configured to determine a location of a channel bandwidth of the terminal based on the first information.

For a specific content included in the first information, refer to the specific description of the first information in the second aspect, which is not specifically limited herein.

In a possible design, the receiving module is further configured to receive and send second information, where the second information is used to indicate a size of a channel bandwidth of the terminal.

In a possible design, the receiving module is further configured to receive third information, where the third information is used to indicate a subcarrier spacing corresponding to the SC _offset subcarriers.

In a possible design, the receiving module is further configured to receive fourth information, where the fourth information is used to indicate a subcarrier spacing of the resource cell.

In a possible design, the receiving module is further configured to receive configuration information of the BWP, where the configuration information of the BWP includes a bandwidth of the BWP, and the determining module is further configured to perform according to the configuration according to the configuration. The relationship between the relationship and the bandwidth of the BWP determines the size of the channel bandwidth of the terminal corresponding to the BWP; wherein the corresponding relationship of the configuration is a correspondence between the channel bandwidth size of the terminal and the transmission bandwidth of the terminal side; The size of the channel bandwidth is equal to the first channel bandwidth, the first channel bandwidth corresponds to a minimum value in the first set; and the terminal side transmission configuration bandwidth size included in the first set is greater than or equal to the BWP The size of the bandwidth.

In a sixth aspect, the embodiment of the present application further provides a terminal, where the terminal includes a processor, and is used to implement the function of the terminal in the method described in the foregoing second aspect. The terminal may also include a memory for storing program instructions and data. The memory is coupled to the processor, the processor invoking and executing program instructions stored in the memory for implementing the functions of the terminal in the method described in the second aspect above. The terminal may also include a transceiver for the terminal to communicate with other devices. Illustratively, the other device is a network device.

In one possible device, the terminal includes:

transceiver;

a memory for storing program instructions;

a processor, configured to receive, by using a transceiver, first information, where the first information is used to indicate a location of a channel bandwidth of the terminal, the channel bandwidth is a radio frequency bandwidth, and the radio frequency bandwidth includes an uplink or downlink transmission resource, where The processor determines a location of a channel bandwidth of the terminal based on the first information.

In a possible design, the processor is further configured to receive, by using a transceiver, second information, where the second information is used to indicate a size of a channel bandwidth of the terminal, and determine the The size of the channel bandwidth of the terminal.

In a possible design, the processor is further configured to receive, by using a transceiver, third information, where the third information is used to indicate a subcarrier spacing corresponding to the SC _offset subcarriers.

In a possible design, the processor is further configured to receive, by using a transceiver, fourth information, where the fourth information is used to indicate a subcarrier spacing of the resource cell.

In a possible design, the processor is further configured to receive configuration information of the BWP by using a transceiver, where the configuration information of the BWP includes a bandwidth of the BWP, and then according to the configured correspondence and the bandwidth of the BWP. The size of the channel bandwidth of the terminal corresponding to the BWP is determined; wherein the correspondence between the configuration is a correspondence between a channel bandwidth of the terminal and a transmission bandwidth of the terminal, and a channel bandwidth of the terminal. The first channel bandwidth is equal to the minimum value in the first set, and the terminal side transmission configuration bandwidth size included in the first set is greater than or equal to the bandwidth of the BWP.

In a fourteenth aspect, the embodiment of the present application provides a data transmission method, including: performing data transmission by using a resource in a channel bandwidth of a terminal and the terminal, and a center frequency of the channel bandwidth of the terminal and a center of the resource grid Subcarrier alignment.

In a possible design, if the resource cell size corresponding to the minimum subcarrier interval and the maximum transmission bandwidth configuration corresponding to the minimum subcarrier interval are the same, the subcarrier spacing corresponding to the resource cell is the minimum subcarrier spacing. The minimum subcarrier spacing is a minimum subcarrier spacing configured on a carrier or a configurable minimum subcarrier spacing on a carrier.

In a possible design, if the resource cell size corresponding to the minimum subcarrier interval is different from the maximum transmission bandwidth configuration corresponding to the minimum subcarrier interval, the subcarrier spacing corresponding to the resource cell is the first subcarrier spacing, first. The product of the resource cell size corresponding to the subcarrier spacing and the first subcarrier spacing is greater than or equal to the product of the resource cell size corresponding to the second subcarrier spacing and the second subcarrier spacing, and the second subcarrier spacing and the first subcarrier spacing are The subcarrier spacing configured on the carrier, or the second subcarrier spacing and the first subcarrier spacing are configurable subcarrier spacings on the carrier.

In a possible design, if the resource cell size corresponding to the maximum subcarrier interval is the same as the maximum transmission bandwidth configuration corresponding to the maximum subcarrier interval, the subcarrier spacing corresponding to the resource cell is the maximum subcarrier spacing. The maximum subcarrier spacing is a maximum subcarrier spacing configured on a carrier or a maximum subcarrier spacing configurable on a carrier.

In a possible design, if the resource cell size corresponding to the maximum subcarrier interval is different from the maximum transmission bandwidth configuration corresponding to the maximum subcarrier interval, the subcarrier spacing corresponding to the resource cell is the first subcarrier spacing, first. The product of the resource cell size corresponding to the subcarrier spacing and the first subcarrier spacing is greater than or equal to the product of the resource cell size corresponding to the second subcarrier spacing and the second subcarrier spacing, and the second subcarrier spacing and the first subcarrier spacing are The subcarrier spacing configured on the carrier, or the second subcarrier spacing and the first subcarrier spacing are configurable subcarrier spacings on the carrier.

In a possible configuration, the subcarrier spacing corresponding to the resource grid is a minimum subcarrier spacing configured on a carrier or a minimum subcarrier spacing configurable on a carrier. Or the subcarrier spacing corresponding to the resource cell is the maximum subcarrier spacing configured on the carrier or the maximum subcarrier spacing configurable on the carrier. Or the subcarrier spacing corresponding to the resource cell is a preconfigured subcarrier spacing. Or the method further includes: transmitting fifth information, where the fifth information is used to indicate a subcarrier spacing of the resource grid.

The apparatus for performing the methods of the fourteenth aspect may be a network device or a device capable of supporting the network device to implement the method. For example, the device may be a chip, a module, a circuit, or the like, which is not specifically limited in this application.

In a fifteenth aspect, the embodiment of the present application provides a resource configuration method, including: determining a center frequency of a channel bandwidth of a terminal and a center subcarrier of a resource grid, and performing data transmission by using resources in a channel bandwidth of the terminal. .

In a possible design, the specific content of the resource grid can be referred to the corresponding description in the fourteenth aspect, and details are not described herein again.

In a possible design, the method further includes receiving fifth information, the fifth information being used to indicate a subcarrier spacing of the resource grid.

The apparatus for performing the methods of the fifteenth aspect may be a terminal, or may be a device capable of supporting the terminal to implement the method. For example, the device may be a chip, a module, a circuit, or the like, which is not specifically limited in this application.

The device according to the fourteenth aspect of the present invention provides a device, which may be a network device, or a device capable of supporting the network device to implement the method of the fourteenth aspect. The device may include a communication module that can perform the functions in any of the design examples of the fourteenth aspect above, specifically:

And a communication module, configured to perform data transmission by using the resource in the channel bandwidth of the terminal and the terminal, and the center frequency of the channel bandwidth of the terminal is aligned with the central subcarrier of the resource grid.

In a possible design, the communication module is further configured to send fifth information, where the fifth information is used to indicate a subcarrier spacing of the resource grid.

In a seventeenth aspect, the embodiment of the present application further provides a network device, where the network device includes a processor, and is configured to implement the function of the network device in the method described in the fourteenth aspect. The network device can also include a memory for storing program instructions and data. The memory is coupled to the processor, and the processor can invoke and execute program instructions stored in the memory for implementing the functions of the network device in the method described in the fourteenth aspect above. The network device can also include a transceiver for the network device to communicate with other devices. Illustratively, the other device is a terminal.

In one possible device, the network device includes:

transceiver;

a memory for storing program instructions;

And a processor, configured to use the transceiver to perform data transmission with the terminal through a resource in a channel bandwidth of the terminal, where a center frequency of the channel bandwidth of the terminal is aligned with a central subcarrier of the resource grid.

In one possible design, the processor also utilizes the transceiver to transmit fifth information, the fifth information being used to indicate a subcarrier spacing of the resource bin.

Based on the same inventive concept as the fifteenth aspect, the embodiment of the present application provides a device, which may be a terminal, or a device capable of supporting the terminal to implement the method of the fifteenth aspect, The device may include a communication module, and may perform the functions in any of the design examples of the fifteenth aspect, specifically:

The communication module is configured to perform data transmission by using resources in a channel bandwidth of the terminal, and the center frequency of the channel bandwidth of the terminal is aligned with the central subcarrier of the resource grid.

In a possible design, the specific content of the resource grid can be referred to the corresponding description in the fifteenth aspect, and details are not described herein again.

In a possible design, the communication module is further configured to receive fifth information, where the fifth information is used to indicate a subcarrier spacing of the resource grid.

In a nineteenth aspect, the embodiment of the present application further provides a terminal, where the terminal includes a processor, and is used to implement the function of the terminal in the method described in the fifteenth aspect. The terminal may also include a memory for storing program instructions and data. The memory is coupled to the processor, the processor invoking and executing program instructions stored in the memory for implementing the functions of the terminal in the method described in the fifteenth aspect above. The terminal may also include a transceiver for the terminal to communicate with other devices. Illustratively, the other device is a network device.

In one possible device, the terminal includes:

transceiver;

a memory for storing program instructions;

The processor is configured to use the transceiver to perform data transmission through resources in a channel bandwidth of the terminal, and the center frequency of the channel bandwidth of the terminal is aligned with the central subcarrier of the resource grid.

In one possible design, the processor further receives, by the transceiver, fifth information, the fifth information being used to indicate a subcarrier spacing of the resource bin.

In a seventh aspect, the embodiment of the present application further provides a computer storage medium, where the program medium stores program instructions, where the program instructions can be implemented by one or more processors and can implement the first aspect or the fourteenth The method described in the aspects.

In an eighth aspect, the embodiment of the present application further provides a computer storage medium, where the software program stores a software program, and the software program can implement the second aspect or the fifteenth when being read and executed by one or more processors. The method described in the aspects.

In a ninth aspect, the embodiment of the present application provides a computer program product comprising instructions, when executed on a computer, causing a computer to perform the method described in the first aspect or the fourteenth aspect.

In a tenth aspect, the embodiment of the present application provides a computer program product comprising instructions, when executed on a computer, causing a computer to perform the method described in the second aspect or the fifteenth aspect.

In an eleventh aspect, the embodiment of the present application provides a chip system, where the chip system includes a processor, and may further include a memory for implementing the functions of the network device in the foregoing method. The chip system can be composed of chips, and can also include chips and other discrete devices.

In a twelfth aspect, the embodiment of the present application provides a chip system, where the chip system includes a processor, and may further include a memory for implementing the function of the terminal in the foregoing method. The chip system can be composed of chips, and can also include chips and other discrete devices.

In a thirteenth aspect, the embodiment of the present application provides a system, where the system includes the network device of the third aspect or the fourth aspect, and the terminal according to the fifth aspect or the sixth aspect; or the system includes The network device according to the sixteenth aspect or the seventeenth aspect, and the terminal of the eighteenth aspect or the nineteenth aspect.

DRAWINGS

1 is a schematic structural diagram of a communication system according to an embodiment of the present application;

2 is a schematic structural diagram of bandwidth of a resource that can be used for data transmission according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a BWP according to an embodiment of the present disclosure;

4 is a schematic diagram of dividing an absolute frequency channel number according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a positional relationship between a carrier bandwidth and a system bandwidth according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of a positional relationship between a carrier bandwidth and a BWP bandwidth of a terminal according to an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of receiving interference of a terminal according to an embodiment of the present disclosure;

FIG. 8 is a schematic flowchart of an information transmission method according to an embodiment of the present application;

FIG. 9 is a schematic diagram of a first relative position relationship provided by an embodiment of the present application;

FIG. 10 is a schematic diagram of a second relative position relationship provided by an embodiment of the present application;

FIG. 11 is a schematic diagram of a third relative positional relationship provided by an embodiment of the present application;

FIG. 12 is a schematic diagram of switching of a BWP according to an embodiment of the present disclosure;

FIG. 13 is a schematic diagram of switching of another BWP according to an embodiment of the present disclosure;

FIG. 14 is a schematic structural diagram of a device according to an embodiment of the present application;

FIG. 15 is a schematic structural diagram of a network device according to an embodiment of the present disclosure;

FIG. 16 is a schematic structural diagram of a device according to an embodiment of the present application;

FIG. 17 is a schematic structural diagram of a terminal according to an embodiment of the present application;

FIG. 18 is a schematic diagram of a resource grid provided by an embodiment of the present application.

Detailed ways

The embodiments of the present application may be applied to, but not limited to, an NR system, and may also be applied to an LTE system, a long term evolution-advanced (LTE-A) system, and an enhanced long term evolution-advanced (eLTE). In a communication system, it can also be extended to related cellular systems such as wireless fidelity (WiFi), worldwide interoperability for microwave access (wimax), and 3GPP. The specific communication system architecture applied in the embodiment of the present application may be as shown in FIG. 1 , including a network device and at least one terminal. It should be noted that, in the embodiment of the present application, the terminals in the communication system shown in FIG. 1 are not limited. number.

Hereinafter, some of the terms in the present application will be explained to be understood by those skilled in the art.

1) A network device is a device in a communication system that connects a terminal to a wireless network. The network device is a node in the radio access network, and may also be referred to as a base station, and may also be referred to as a radio access network (RAN) node (or device). Currently, some examples of network devices are: gNB, transmission reception point (TRP), evolved Node B (eNB), radio network controller (RNC), and Node B (Node). B, NB), base station controller (BSC), base transceiver station (BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit , BBU), or wireless fidelity (Wifi) access point (AP). In addition, in a network structure, the network device may include a centralized unit (CU) node and a distributed unit (DU) node. This structure separates the protocol layer of the eNB in the long term evolution (LTE) system, and the functions of some protocol layers are centrally controlled in the CU, and the functions of the remaining part or all of the protocol layers are distributed in the DU by the CU. Centrally control the DU.

2) A terminal, also called a terminal device, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), etc., is a voice and/or data provided to a user. Connected devices, for example, handheld devices with wireless connectivity, in-vehicle devices, and the like. Currently, some examples of terminals are: mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality. (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical surgery, smart grid Wireless terminals, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, and the like.

3) Resource unit, the granularity of resource allocation, such as RB. It should be noted that the present application does not limit the scope of resource units in the time domain. A resource unit may be a physical resource unit or a virtual resource unit. A virtual resource unit is a logical concept of a frequency domain resource, and a virtual resource unit has the same physical resource unit size (including both frequency domain and time domain) to which it is mapped. In the communication system, the network device can implement the allocation information indication of the physical resource unit of the terminal through the mapping relationship between the virtual resource unit and the physical resource unit.

In this embodiment, the physical resource unit may be a physical resource block (PRB), where the PRB may be a PRB defined in the NR protocol, and may include 12 consecutive subcarriers in the frequency domain. The virtual resource unit may be a virtual resource block (VRB), and the number of the virtual resource unit may be mapped to the number of another physical resource unit.

In this embodiment, the physical resource unit may also be a physical resource block group (PRBG), and one PRBG may include multiple PRBs consecutive in the frequency domain, having the number n _PRBG . The virtual resource unit may be a virtual resource block group (VRBG), numbered n _VRBG , and the number of the virtual resource unit may be mapped to the number of another physical resource unit.

4) Bandwidth part:

Currently, BWP is introduced in the discussion of the 3GPP standard conference. A BWP is a frequency domain resource that is configured by a network device in a communication system to be a terminal, including a continuous physical resource unit (such as a PRB). The bandwidth portion used by the terminal is within the system bandwidth of the communication system, and the bandwidth portion of the bandwidth portion used by the terminal needs to be less than or equal to the maximum bandwidth supported by the terminal (also referred to as the radio frequency bandwidth of the UE). Therefore, the network The bandwidth of the BWP configured by the device for the terminal cannot exceed the RF bandwidth of the terminal. For example, if the radio frequency bandwidth of the terminal is 50 MHz, the bandwidth of the BWP configured for the terminal cannot exceed the number of RBs included in the 50 MHz. The bandwidth portion may be a downlink or uplink bandwidth portion, and the terminal receives or transmits data on a data channel in the bandwidth portion, and the network device may configure one or more downlink or uplink bandwidth portions for the terminal, and the terminal may work at one or more bandwidths simultaneously. Part (including multiple downstream bandwidth parts or multiple upstream bandwidth parts). The network device configures the frequency domain resources used by the terminal to transmit data in the BWP. The unit of BWP is a resource unit.

In a wireless communication system, for example, in an orthogonal frequency division multiplexing (OFDM)-based communication system, resources available for data transmission in the frequency domain include a plurality of resource cells, and one resource cell corresponds to On one subcarrier, there are X1 resource cells in one PRB, and X1 is an integer greater than 1. Illustratively, X1 is 12. The resources available for data transmission may be some or all of the resources in the system bandwidth, or some or all of the resources in the BWP. The bandwidth of resources available for data transmission may be referred to as X2 PRBs, and X2 is an integer greater than or equal to 1. For the PRBs in the resources that can be used for data transmission, the PRBs can be sequentially numbered from 0 to X2-1 based on the direction of frequency increase, and the numbers of the respective PRBs are obtained. In the embodiment of the present application, the term "number" may also be referred to as "identification" or "index". In the time domain, one PRB may include X3 symbols, and X3 is an integer greater than or equal to 1. Illustratively, X3 is 7 or 14. Taking one PRB in the frequency domain and including 12 symbols in the time domain as an example, as shown in FIG. 2, it is a structural diagram of the bandwidth of resources that can be used for data transmission, and can be used for data transmission. The bandwidth includes a total of X2 PRBs from PRB 0 to PRB X2-1.

The number of subcarriers in the corresponding PRBs may be the same or different for different subcarrier spacings, which is not limited in this application. For a BWP, the bandwidth of the PRB of the BWP is determined according to the subcarrier spacing of the BWP and the number of subcarriers in the PRB. Illustratively, for a BWP, if its subcarrier spacing is 15 kHz and there are 12 subcarriers in one PRB, the bandwidth of the PRB of the BWP is 180 kHz. By way of example, for a BWP, if its subcarrier spacing is 60 kHz and there are 12 subcarriers in one PRB, the bandwidth of the PRB of the BWP is 720 kHz.

The network device can configure the BWP for the terminal from the system bandwidth, and the bandwidth of the BWP is less than or equal to the bandwidth capability of the terminal, that is, the bandwidth of the BWP is less than or equal to the channel bandwidth of the terminal. When the terminal and the network device communicate, the terminal may allocate some or all resources in the BWP configured for the terminal to the terminal, and perform communication between the network device and the terminal. Referring to Figure 3, two BWPs are configured for the terminal, namely BWP0 and BWP1.

5) The frequency range of the configuration involved in the embodiment of the present application includes all frequency resources that can be used as specified by the communication protocol. The absolute frequency channel number in the embodiment of the present application is obtained by numbering the configured frequency range by setting the granularity. The granularity of settings can be a channel raster.

The size of a channel grid can be predefined. For example, a channel raster has a size of 100 kHz, and may also be a PRB size, a subcarrier size, or the like. Exemplarily, the size of the channel grid is 100 kHz, and the absolute radio frequency channel number (ARFCN) obtained by dividing the channel rasters for all the frequency resources that can be used by the current communication protocol is used. The range is 0 to 65535. In the embodiment of the present application, the carrier frequency corresponding to the absolute frequency channel number is not specifically limited. As an example, as shown in FIG. 4, the ARFCN in the downlink is a corresponding carrier frequency (or a carrier center frequency) in the range of 1 to 5739, and the ARFCN in the uplink corresponds to a range of 18000 to 23379. Carrier frequency. In the downlink, the correspondence between the carrier frequency and the ARFCN satisfies the condition shown in the following formula (1). In the uplink, the correspondence between the carrier frequency and the ARFCN satisfies the following formula (2). condition.

F _DL =F _{DL_low} +0.1(N _DL -N _{offs_DL} ) Formula (1)

F _UL =F _{UL_low} +0.1(N _UL -N _{offs_UL} ) Formula (2)

Where F _DL represents the carrier frequency of the downlink (also the minimum frequency of the channel grid corresponding to one ARFCN), F _UL represents the carrier frequency of the uplink, N _DL represents the ARFCN of the downlink, and N _UL represents the uplink the _ARFCN, N offs_DL determine the offset represents the downlink ARFCN _employed, N offs_UL offset determination indicates an uplink ARFCN _employed, F DL_low represents the lowest frequency within the frequency band of the _downlink, F UL_low Indicates the lowest frequency in the frequency band of the uplink.

The so-called band refers to the width of the spectrum or a range of frequencies, in Hz. Illustratively, the communication protocol may specify that all of the frequency resources that can be used can be divided into 70 frequency bands, using numbers 1 - 70 to represent different frequency bands. FIG. 4 shows the correspondence between the carrier frequency (carrier center frequency) corresponding to the frequency bands 1 to 14 and the absolute frequency channel number. Different operators may use different frequency bands or use ranges of different frequencies within the same frequency band. The embodiment of the present application can be applied to the frequency band division mode of the current communication protocol, and the frequency band can be divided in other different manners, which is not specifically limited in this embodiment of the present application.

For example, the way to divide the absolute frequency channel number as shown in Table 1 below:

Table 1

bandBand	F _low F _low	N _offs N _offs	N _AR N _AR
ii	aa	bb	ARFCN0～ARFCNnARFCN0~ARFCNn

Where F _low represents the lower boundary frequency (minimum frequency) in the frequency band, N _offs represents the offset used to determine the ARFCN, N _AR represents the range of the ARFCN, and in the i-th frequency band the range of the ARFCN is ARFCN0 to ARFCNn. Then, it is determined that the correspondence between the carrier frequency and the ARFCN satisfies the condition shown in the following formula (3):

F _L =F _low +C*(N _AR -N _offs ) Formula (3)

Where F _L represents the frequency of the carrier and C represents the size of the channel grid.

The absolute frequency channel number in the embodiment of the present application may also be determined according to a global frequency raster. For a description of the global frequency grid, reference may be made to the description of the 3GPP standard protocol 38.101. The frequency range corresponding to the global frequency grid can be from 0-100 GHz and is used to define a set of allowed RF reference frequencies. For a description of the radio frequency reference frequency, reference may be made to the description of the 3GPP standard protocol 38.101. The granularity of the global frequency raster is ΔF _Global . On a certain band, a subset of the global frequency grid can be used as the channel grid for the band. Assuming that the granularity of the channel grid is ΔF _Raster , the granularity of the channel grid can be greater than or equal to the global frequency grid. Granularity.

Exemplarily, the value range of the ARFCN corresponding to the global frequency grid is an integer between 0 and 2016666. The relationship between the RF reference frequency and the ARFCN corresponding to the global frequency grid is as follows:

F _REF =F _REF-Offs +ΔF _Global (N _REF –N _REF-Offs )

Where F _REF is the RF reference frequency, N _REF is the ARFCN corresponding to the global frequency grid, and F _REF-Offs and N _REF-Offs are integers. Illustratively, the frequency range of F _REF , the range of ΔF _Global , the range of N _REF , the values of F _REF-Offs and N _REF-Offs can be as shown in Table 3 below:

table 3

6) The carrier bandwidth (channel bandwidth of the network device) defines the upper and lower limit frequencies of the frequency resources that the network device can use for communication, that is, a frequency passband is defined, and the carrier bandwidth includes uplink and downlink transmission resources. In one band, several different carrier bandwidths can be flexibly allocated. The carrier bandwidth is flexible in the communication system, for example, the following six configuration modes are 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz, 20MHz.

Not all carrier bandwidths can be used as resources for transmitting uplink and downlink data. Some parts of the carrier bandwidth are reserved for protection of bandwidth. As shown in Figure 5, the carrier bandwidth includes protection bandwidth and system bandwidth. Taking the carrier bandwidth of 20 MHz as an example, there are 12 subcarriers in one RB, and the interval between each two adjacent subcarriers is 15 kHz. Then, if the carrier bandwidth of 20 MHz is used as the RB for transmitting data, there may be 110 RBs. However, when the spectrum is actually transmitted, it is impossible to be a theoretical rectangular window. At both edges of the carrier bandwidth, oblique edges (transmitted signal power roll-off) are inevitable. For example, in all carrier bandwidths outside the 20 MHz bandwidth, the RB block used for transmission resources occupies 90% of the carrier bandwidth, so for the actual 20 MHz carrier bandwidth, the number of RB resources that can be used to transmit data is 100. For another example, when the channel bandwidth is 1.4 MHz, the system bandwidth is 6 RB=1.08 MHz, and 0.32 MHz in the carrier bandwidth is the protection bandwidth. The system bandwidth includes an integer number of RBs within the carrier bandwidth.

For example, the corresponding relationship between the system bandwidth and the size of the carrier bandwidth can be seen in Table 2 below. The system bandwidth can also be referred to as a transmission bandwidth configuration, and the system is represented by the number of _RBs N _RB . The bandwidth size indicates the carrier bandwidth by BW _channel (MHz). In addition, the center point of the carrier bandwidth and system bandwidth can be aligned.

Table 2

BW _channel(MHz) BW _channel (MHz)	1.41.4	33	55	1010	1515	2020
N _RB N _RB	66	1515	2525	5050	7575	100100

It should be noted that, in the LTE communication system, the channel bandwidth of the network device is equal to the channel bandwidth of the terminal, and is equal to the carrier bandwidth. In the NR communication system, the channel bandwidth of the network device is equal to the carrier bandwidth, and the channel bandwidth of the terminal is less than or Equal to the carrier bandwidth. The channel bandwidth of a network device may also be referred to as the radio frequency bandwidth of the network device, or the carrier bandwidth, in MHz. The channel bandwidth of the terminal may be referred to as the radio frequency bandwidth of the terminal, the carrier bandwidth of the terminal, and the filtering bandwidth of the terminal. The channel bandwidth of the terminal includes uplink and downlink transmission resources, and the unit is MHz.

In the embodiment of the present application, the channel bandwidth of the terminal may support a plurality of determined values, such as 5 MHz, 15 MHz, 20 MHz, 40 MHz, 50 MHz, 60 MHz, 80 MHz, 100 MHz, etc., and each channel bandwidth of the terminal may also have corresponding protection. Bandwidth, the guard bandwidth of the channel bandwidth of the terminal may be located in both edge regions of the channel bandwidth of the terminal.

7) The maximum transmission bandwidth configuration is used to define the maximum transmission bandwidth that can be supported, for example, to define the maximum transmission bandwidth that the terminal can support. The description can refer to the 3GPP standard protocol 38.101.

Illustratively, for a given subcarrier spacing, the maximum transmission bandwidth configuration of the terminal for a given channel bandwidth is as shown in Table 4 below, where the unit of the maximum transmission bandwidth configuration is RB. As shown in Table 4, the channel bandwidth of the terminal may be 5 MHz, 10 MHz, 15 MHz, 20 MHz, 25 MHz, 30 MHz, 40 MHz, 50 MHz, 60 MHz, 80 MHz or 100 MHz. For example, when the channel bandwidth of the terminal is 5 MHz, the maximum transmission bandwidth of the terminal is configured to be 25 RBs for 15 kHz.

Table 4

8) Resource grid.

On the carrier, the resource grid can be configured or defined for a certain transmission direction of the given subcarrier spacing. For details, refer to 3GPP standard protocol 38.211. Illustratively, for a given subcarrier spacing μ, for uplink or downlink identified by x, the resource grid is included in the frequency domain

Subcarriers, the resource grid is included in the time domain

OFDM symbols. among them,

The size of the resource grid or the number of RBs included in the resource grid, the unit is RB.

For the number of subcarriers included in each RB, for example

Equal to 12.

The number of OFDM symbols included in each subframe, for example

Is 14, 28, 56 or other positive integer.

The starting position of the resource grid in the frequency domain can be

The terminal can be signaled by the network device,

Is an integer and the unit is RB.

The network device can configure the BWP for the terminal in the resource grid.

9) Upconversion carrier frequency.

A description of the upconverted carrier frequency can be found in the 3GPP standard protocol 38.211.

Illustratively, the upconverted carrier frequency position can be expressed as f ₀ for the baseband signal

Antenna port p, subcarrier spacing μ, OFDM symbol l, for time t, if the start time t=0 of the subframe in which the symbol l is located, the up-conversion operation may be

among them

The start time of the OFDM symbol 1 corresponding to the subcarrier μ in the subframe,

The cyclic prefix length corresponding to symbol l, T _c =1/(Δf _max ·N _f ), where Δf _max =480·10 ³ Hz, N _f =4096.

The plurality referred to in the present application means two or more.

Mathematical symbols involved in the embodiments of the present application

Indicates rounding down, for example: A=3.9, then

Mathematics Symbol

Indicates rounding up, for example: B=3.1, then

In the description of the present application, the terms "first", "second" and the like are used for the purpose of distinguishing the description, and are not to be construed as indicating or implying a relative importance, nor as an indication or suggestion.

In addition, the bandwidth supported by the terminal in LTE is equal to the size of the carrier bandwidth, and the center frequency of the BWP configured for the terminal is the same as the center frequency of the carrier bandwidth. In the NR communication system, in the scenario where the carrier bandwidth is increased and the BWP is configured for the terminal, the bandwidth supported by the terminal may be smaller than the carrier bandwidth in consideration of the cost of the terminal and the traffic volume of the terminal. The bandwidth supported by the terminal may be referred to as the radio frequency bandwidth of the terminal or the channel bandwidth called the terminal.

After the BWP is introduced, the terminal only needs to know the bandwidth occupied by the BWP, and it is no longer necessary to know the size of the carrier bandwidth. In NR, after not needing to notify the size of the carrier bandwidth, the following effects are obtained:

(1) The usage of the spectrum can be adjusted. For example, part of the bandwidth can be reserved for other purposes, such as for forward compatibility purposes, or reserved for future possible services;

(2) Inter-cell interference coordination can be implemented, and strong interference can be avoided by adjusting the center position of the carrier bandwidth and the carrier bandwidth size;

(3) Different carriers can be used for different services of the terminal, such as enhanced mobile broadband (eMBB) services and ultra-reliable and low latency communication (URLLC) services. Carrier

(4) Adapt to the flexible changes in business volume.

In an LTE communication system, a network device notifies a terminal of a system bandwidth through a physical broadcast channel (PBCH). In the NR communication system, in order to meet the flexible change of the system bandwidth, if the PBCH notification is still used, the terminal may not work normally after the system bandwidth changes. In this case, the cell restart is required, and all the terminals accessing the cell need to be disconnected. Re-access, making the process very complicated. After the introduction of the BWP, on the one hand, the bit overhead of resource allocation is saved, and on the other hand, the network device does not need to notify the terminal of the system bandwidth.

In the NR communication system, considering the introduction of the BWP, on the terminal side, the relationship between the channel bandwidth (carrier bandwidth) of the network device and the BWP bandwidth of the terminal can be as shown in FIG. 6. In the NR communication system, the size of the channel bandwidth of the terminal may be different from the size of the carrier bandwidth (that is, the size of the channel bandwidth of the network device). In addition, since the network device does not notify the bandwidth of the terminal carrier, the terminal only knows the bandwidth occupied by the BWP. Therefore, the terminal does not specify the channel bandwidth of the terminal at the specific location of the carrier bandwidth. In the LTE communication system, the channel bandwidth of the terminal is equal to the carrier bandwidth, and the center frequency of the BWP configured for the terminal is the same as the center frequency of the carrier bandwidth. Therefore, the terminal can determine the channel of the terminal according to the location of the bandwidth occupied by the BWP. The location of the bandwidth. In the NR communication system, the channel bandwidth of the terminal may be smaller than the carrier bandwidth. Based on the bandwidth of the BWP, the terminal cannot determine the channel bandwidth of the terminal.

If the location of the channel bandwidth of the terminal is determined according to the same rule that the center frequency of the BWP configured for the terminal is the same as the center frequency of the carrier bandwidth in LTE, and the data is received based on the channel bandwidth of the terminal determined by the rule, if the BWP configuration At the edge position of the carrier bandwidth, at this time, the channel bandwidth of the terminal determined based on the rule may exceed the carrier bandwidth, thereby causing the terminal to receive data outside the carrier bandwidth, and the filter in the terminal may not be outside the carrier bandwidth. The processing of the data causes a large interference to the reception of the terminal, thereby affecting the receiving performance of the terminal, as shown in FIG. 7 .

Based on this, an embodiment of the present application provides an information transmission method and apparatus. The network device sends the first information to the terminal to indicate the location of the channel bandwidth of the terminal, so that the terminal can determine the channel of the terminal based on the first information. The location of the bandwidth, in turn, prevents the reception of data outside the carrier bandwidth. The method and the device are based on the same inventive concept. Since the principles of the method and the device for solving the problem are similar, the implementation of the device and the method can be referred to each other, and the repeated description is not repeated.

In the embodiment of the present application, the device that performs the network device side method may be a network device, or may be a device that is disposed in the network device. The device that is disposed in the network device may be a chip, a module, a circuit, or the like, which is not specifically limited in this application. In the embodiment of the present application, a network device may be taken as an example for description.

In the embodiment of the present application, the apparatus for performing the terminal side method may be a terminal, or may be a device disposed in the terminal. The device that is disposed in the terminal may be a chip, a module, a circuit, or the like, which is not specifically limited in this application. In the embodiment of the present application, the terminal may be used as an example for description.

FIG. 8 is a schematic diagram of an information transmission method according to an embodiment of the present application, where the method includes:

S101. The network device sends first information to the terminal, where the first information is used to indicate a location of a channel bandwidth of the terminal.

The first information may be the UE-specific information, and the first information may be different or different for different terminals, which is not limited in this application.

S102. The terminal receives the first information.

S103. The terminal determines, according to the first information, a location of a channel bandwidth of the terminal.

In this embodiment, the first information may be used to indicate a location of a channel bandwidth of the terminal, the one channel bandwidth corresponds to a bandwidth portion BWP of the terminal, and the BWP of the one terminal includes a carrier bandwidth. Part of the continuous frequency domain resource. When a BWP is configured for the terminal, the location of the channel bandwidth of a terminal corresponding to the BWP may be indicated by a first information. When a plurality of BWPs are configured for the terminal, the channel bandwidths of the terminals corresponding to the different BWPs may be the same or different. When the same information is used, the channel bandwidth of the terminal corresponding to all the BWPs configured for the terminal may be indicated by the first information. The location of the channel bandwidth of the terminal may be indicated by different first information for different BWPs, and the location of the one channel bandwidth indicated by the different first information may correspond to different BWPs. For example, two BWPs are configured for the terminal, namely BWP0 and BWP1. For BWP0, the network device can indicate the location of the channel bandwidth of the terminal corresponding to BWP0 through information 1. For BWP1, the network device can indicate BWP1 through information 2. The location of the channel bandwidth of the corresponding terminal. In addition, when multiple BWPs are configured for a terminal, the channel bandwidths of the terminals corresponding to the BWPs may be the same, and the channel bandwidths of the terminals corresponding to the other BWPs are different. For example, four BWPs are configured for the terminal, respectively, BWP1. ~BWP4, BWP1 and BWP2 correspond to the same channel bandwidth of the terminal, BWP3 and BWP4 correspond to different channel bandwidths of the terminal respectively. Specifically, the BWP with the same channel bandwidth of the terminal can use one information, and the BWP of the terminal with different channel bandwidth Use different information separately.

In the embodiment of the present application, one mode is: the size of the channel bandwidth of the terminal may be predefined; and the other method is that the network device configures the channel bandwidth of the terminal to the terminal, and specifically, the network device may also The terminal sends the second information, where the second information is used to indicate the size of the channel bandwidth of the terminal. The network device may send the first information and the second information in the same signaling to the terminal, and may also be carried in different signaling and sent to the terminal. In another aspect, the channel bandwidth of the terminal is determined according to the configured correspondence and the bandwidth of the BWP. For the specific determination manner, refer to the descriptions of Table 5 and Table 6, and details are not described herein.

In this embodiment of the present application, the network device may indicate the location of the channel bandwidth of the terminal in the following manners:

The first implementation manner: the network device can indicate the location of the channel bandwidth of the terminal by indicating an absolute frequency channel number corresponding to a certain frequency point in the channel bandwidth of the terminal.

The second implementation manner: the network device may indicate the location of the channel bandwidth of the terminal by indicating an offset of a resource unit in the channel bandwidth of the terminal relative to the reference resource unit in the frequency domain.

The offset of a resource unit in the channel bandwidth of the terminal relative to the reference resource unit in the frequency domain may also be described as a resource unit and a reference resource unit in the channel bandwidth of the terminal in the frequency domain. The offset on the top.

The third implementation manner is: pre-defining the relative positional relationship between the BWP and the channel bandwidth of the terminal, and the network device can indicate the positional relationship between the channel bandwidth of the terminal BWP and the terminal.

A fourth implementation manner: the network device can indicate the offset of the center frequency point of the channel bandwidth of the terminal from the up-converted carrier frequency position of the terminal.

A fifth implementation manner: the network device may indicate an offset of a center frequency point of a channel bandwidth of the terminal from a center subcarrier of the resource grid.

The first implementation is specifically described below.

The network device may indicate the location of the channel bandwidth of the terminal by indicating an absolute frequency channel number corresponding to a certain frequency point in the channel bandwidth of the terminal. The first information sent by the network device to the terminal includes an absolute frequency channel number corresponding to the reference frequency point in the channel bandwidth of the terminal.

The reference frequency point may be any one of the channel bandwidths of the terminal, for example, the reference frequency point in the channel bandwidth of the terminal may be a central frequency point in the channel bandwidth of the terminal; The reference frequency point may also be the smallest frequency point in the channel bandwidth of the terminal; or the reference frequency point in the channel bandwidth of the terminal is the maximum frequency point among the channel bandwidths of the terminal.

The reference frequency point is specifically which one of the channel bandwidths of the terminal may be pre-defined or dynamically indicated, and the network device may determine which reference frequency point is and configure the terminal.

Taking the reference frequency point in the channel bandwidth of the terminal as the central frequency point in the channel bandwidth of the terminal as an example, the network device notifies the terminal of the absolute frequency channel number corresponding to the central frequency point in the channel bandwidth of the terminal. The terminal can determine the location of the channel bandwidth of the terminal according to the absolute frequency channel number of the center frequency point.

Specifically, in one manner, the terminal may align the center frequency of the channel raster corresponding to the absolute frequency channel number with the center frequency of the channel bandwidth of the terminal. Alternatively, the terminal may align the minimum frequency of the channel raster corresponding to the absolute frequency channel number with the center frequency of the channel bandwidth of the terminal. In another way, the terminal can align the maximum frequency of the channel raster corresponding to the absolute frequency channel number with the center frequency of the channel bandwidth of the terminal.

For example, taking the division method of the absolute frequency channel number shown in Table 1 as an example, the absolute frequency channel number corresponding to the center frequency point in the channel bandwidth of the terminal is ARFCN0, and the absolute frequency channel number determined according to formula (3) corresponds. The center frequency of the carrier is f ₀ , and the terminal aligns the center frequency of the carrier corresponding to the absolute frequency channel number with the center frequency of the channel bandwidth of the terminal, and determines that the center frequency of the channel broadband of the terminal is f ₀ , if determined If the channel bandwidth of the terminal is f (MHz), it can be determined that the location of the channel bandwidth of the terminal is (f ₀ -f) to (f ₀ +f).

For example, taking the absolute frequency channel number division mode shown in FIG. 4 as an example, it is assumed that the absolute frequency channel number corresponding to the center frequency point in the channel bandwidth of the terminal is 1200, so that the terminal can determine the absolute frequency according to formula (1). The minimum frequency of the channel grid corresponding to the channel number is 1805 MHz, and the size of the channel grid in FIG. 4 is 100 kHz, and the lower boundary frequency of the channel grid corresponding to the absolute frequency channel number is 1805 MHz, and the terminal corresponds to the absolute frequency channel number. After the lower boundary frequency of the channel grid is aligned with the center frequency of the channel bandwidth of the terminal, the center frequency of the channel wideband of the terminal is determined to be 1805 MHz. If the channel bandwidth of the terminal is determined to be 10 MHz, the channel bandwidth of the terminal may be determined. The location is between 1800MHz and 1810MHz for the carrier bandwidth.

In the embodiment of the present application, when the network device configures a BWP for the terminal, for example, the BWP corresponds to the channel bandwidth of one terminal, and the absolute frequency channel number corresponding to the reference frequency of the channel bandwidth of the terminal is ARFCN0, then the network device passes the first A message is used to indicate the location of the channel bandwidth of the terminal. Specifically, the first information may include an absolute frequency channel number corresponding to the reference frequency of the channel bandwidth of the terminal, which is ARFCN0. When the network device configures multiple BWPs for the terminal, if multiple BWPs correspond to the channel bandwidth of the same terminal, and the absolute frequency channel number corresponding to the reference frequency of the channel bandwidth of the terminal is ARFCN1, the network device passes the first The information indicates the location of the channel bandwidth of the terminal. Specifically, the first information may include an absolute frequency channel number corresponding to the reference frequency of the channel bandwidth of the terminal, which is ARFCN1.

When the network device configures multiple BWPs for the terminal, if different BWPs correspond to channel bandwidths of different terminals, such as BWP2 and BWP3, BWP2 corresponds to the channel bandwidth of the terminal 2, and the reference frequency of the channel bandwidth 2 of the terminal corresponds to the absolute The frequency channel number is ARFCN2, BWP3 corresponds to the channel bandwidth of the terminal 3, and the absolute frequency channel number corresponding to the reference frequency point of the channel bandwidth 3 of the terminal is ARFCN3, and the network device passes two first information (such as information 1 and information respectively). 2) to indicate the location of the channel bandwidth of the terminal. Specifically, the information 1 may indicate that the BWP2 corresponds to the ARFCN2, and the information 2 indicates that the BWP3 corresponds to the ARFCN3.

When a network device configures multiple BWPs for a terminal, if some of the different BWPs correspond to channel bandwidths of different terminals and another part corresponds to the channel bandwidth of the same terminal. For example, four BWPs are configured for the terminal, namely, BWP1 to BWP4, and the channel bandwidth 1 of the terminal corresponding to BWP1 and BWP2, BWP3 and BWP4 respectively correspond to the channel bandwidth 2 of the terminal and the channel bandwidth 3 of the terminal, and the channel bandwidth of the terminal is 1 The absolute frequency channel number corresponding to the reference frequency point is ARFCN1, and the absolute frequency channel number corresponding to the reference frequency point of the channel bandwidth 2 of the terminal is ARFCN2, and the absolute frequency channel number corresponding to the reference frequency point of the channel bandwidth 3 of the terminal is ARFCN3, Then, the network device indicates the location of the channel bandwidth of the terminal by using three first information (such as information 1, information 2, and information 3, respectively). Specifically, information 1 may indicate that BWP1 and BWP2 correspond to ARFCN1, and information 2 indicates that BWP3 corresponds to ARFCN2. Information 3 indicates that BWP4 corresponds to ARFCN3.

Optionally, the network device may send the configuration information of the BWP configured for the terminal in the same signaling to the terminal, or may be carried in different signaling and sent to the terminal.

Optionally, the network device may further send the one or more first information in the configuration information of the BWP to the terminal. Specifically, the one or more first information may be used as an attribute of the BWP. For example, the configuration information of the BWP carrying the first information may be sent to the terminal by using radio resource control (RRC) signaling.

A configuration method:

For example, the network device configures K BWPs for the terminal.

K BWP configuration information:

{BWP location: 1, 2, ..., K;

The location of the channel bandwidth of the terminal: 1, 2, ..., K}.

The positions 1 to K corresponding to the positions of the BWPs respectively indicate the position information of the first to Kth BWPs. The positions 1 to K corresponding to the positions of the channel bandwidths of the terminals indicate the position information of the channel bandwidths of the terminals corresponding to the BWPs 1 to K, respectively. The location information of the BWP and the location information of the channel bandwidth of the terminal are in one-to-one correspondence.

A configuration method:

For example, the network device configures k BWPs for the terminal, which are BWP0, BWP1, ... BWP(k-1).

BWP0{Location information of BWP0, location information of channel bandwidth of the terminal};

BWP1{Location information of BWP1, location information of channel bandwidth of the terminal};

......

BWP(k-1){BWP(k-1) location information, location information of the channel bandwidth of the terminal}.

Optionally, if a total number of absolute frequency channel numbers are defined in all frequency bands, the length of the information field of the first information may be

Optionally, if the number of the absolute frequency channel numbers included in the different frequency bands is determined, for example, the frequency band X includes BX absolute frequency channel numbers, the length of the information domain of the first information may be

The second implementation manner will be specifically described below.

The network device may indicate the location of the channel bandwidth of the terminal by indicating an offset of the resource element of the terminal and the reference resource unit in the frequency domain.

In a possible implementation manner, the reference resource unit may be a reference point of the BWP of the terminal.

The reference point PRB0 may be the starting PRB of the largest carrier (such as 275 PRBs), which is used to configure the BWP for the terminal. During the initial access of the terminal to the network device, a synchronization signal (SS) block is detected, and the location of the Remaining Minimum System Information (RMSI) is obtained from the SS block. The RMSI carries the relative offset of the center of the PRB0 and the SS block. Since the center of the SS block is predetermined, based on this, the terminal can acquire the position of the PRB0. The network device sends the first information to the terminal, where the first information may include an offset of the nth resource unit and the PRB0 in the frequency domain of the terminal, that is, the first information may include An offset of any one of the resource elements of the terminal and the PRB0 in the frequency domain, wherein the n is a positive integer less than or equal to M, where M is a resource unit in a channel bandwidth of the terminal number.

For example, n may be equal to 1, that is, the first information includes an offset of an edge PRB and a PRB0 in a frequency domain of a lower boundary in a channel bandwidth of the terminal. n may be equal to M, that is, the first information includes an offset of an edge of the terminal in the channel bandwidth of the terminal, PRB and PRB0 in the frequency domain, or the first information includes the center PRB and the PRB0 in the channel bandwidth of the terminal. The offset in the frequency domain, that is, when M is even, the value of n may be M/2 or M/2+1; when M is an odd number, the value of n may be equal to (N+1)/ 2.

Optionally, M may remove the number of resource units included in the protection bandwidth for the channel bandwidth of the terminal.

In the embodiment of the present application, the resource unit in the channel bandwidth may be numbered by using 0, 1, 2, ..., M-1, and may also be numbered by 1, 2, 3, ..., M, and of course, there may be other The method is not specifically limited in this application. If numbering starts from 0, the first resource unit is a resource unit numbered 0, and the M resource unit is a resource unit numbered M-1. If the number is numbered from 1, the first resource unit is The resource unit numbered 1 and the M resource unit is the resource unit numbered M.

In the embodiment of the present application, when the network device configures a BWP for the terminal, for example, the BWP corresponds to a channel bandwidth of one terminal, and the first information is used to indicate a location of a channel bandwidth of the terminal.

When a network device configures multiple BWPs for a terminal, if different BWPs correspond to channel bandwidths of different terminals, such as BWP0 and BWP1, BWP0 corresponds to the channel bandwidth of the terminal, and BWP1 corresponds to the channel bandwidth of the terminal 2, then the network device passes two The first information (such as information 1 and information 2) indicates the location of the channel bandwidth of the terminal corresponding to the two BWPs, and the information 1 includes the nth resource unit and the PRB0 in the frequency domain of the channel bandwidth 1 of the terminal corresponding to BWP0. The offset of the information 2 includes the offset of the nth resource unit and the PRB0 in the frequency domain of the channel bandwidth 2 of the terminal corresponding to the BWP1.

In another possible implementation manner, the reference resource unit may be predefined, for example, the reference resource unit is a certain resource unit in the BWP of the terminal, such as a qth resource unit, where the q is positive. The integer is less than or equal to an integer of Q, where Q is the number of resource units in the BWP of the terminal. Based on this, the first information may include an offset of the nth resource unit in the channel bandwidth of the terminal and the qth resource unit in the BWP of the terminal in the frequency domain.

It should be noted that the channel bandwidth of the terminal described herein corresponds to the BWP of the terminal.

In the embodiment of the present application, when the network device configures a BWP for the terminal, for example, the BWP corresponds to a channel bandwidth of one terminal, and the first information is used to indicate a location of a channel bandwidth of the terminal. When a network device configures multiple BWPs for a terminal, if different BWPs correspond to channel bandwidths of different terminals, such as BWP0 and BWP1, BWP0 corresponds to the channel bandwidth of the terminal, and BWP1 corresponds to the channel bandwidth of the terminal 2, then the network device passes two The first information (such as information 1 and information 2) indicates the location of the channel bandwidth of the terminal corresponding to the two BWPs, and the information 1 includes the nth resource unit in the channel bandwidth 1 of the terminal corresponding to the BWP0 and the qth in the BWP0. The offset of the resource unit in the frequency domain, and the information 2 includes the offset of the nth resource unit in the channel bandwidth 2 of the terminal and the qth resource unit in the BWP1 in the frequency domain.

Alternatively, q can be equal to 1, 2, 3, ... or Q. For example, if q is equal to 1, the first information may include an offset of the nth resource unit in the channel bandwidth of the terminal and the edge PRB of the lower boundary of the BWP of the terminal in the frequency domain; q is equal to Q, then The information includes an offset of the nth resource unit in the channel bandwidth of the terminal and the edge PRB of the upper boundary in the BWP of the terminal in the frequency domain. Or the first information may include an offset of the nth resource unit in the channel bandwidth of the terminal and the central PRB in the BWP of the terminal in the frequency domain, that is, when Q is an even number, q is equal to Q/2 or Q. /2+1; when the Q is an odd number, the q is equal to (Q+1)/2.

In the embodiment of the present application, the resource units in the BWP may be numbered by using 0, 1, 2, ..., Q-1, and may also be numbered by 1, 2, 3, ..., Q, and of course, there may be other ways. This application does not specifically limit this. If numbering starts from 0, the first resource unit is a resource unit numbered 0, and the Qth resource unit is a resource unit numbered Q-1. If the number is numbered from 1, the first resource unit is The resource unit numbered 1 and the Q resource unit is the resource unit numbered Q.

Exemplarily, the first information may include an offset of an edge PRB of a lower boundary in a channel bandwidth of the terminal and a PRB of a lower boundary of the BWP of the terminal in a frequency domain, or the first information may include a channel bandwidth of the terminal. The offset between the edge PRB of the upper boundary and the PRB of the lower boundary of the BWP of the terminal in the frequency domain, or the first information may include a central PRB in the channel bandwidth of the terminal and a lower boundary of the BWP of the terminal The offset of the PRB in the frequency domain, or the first information may include an offset of the edge PRB of the lower boundary in the channel bandwidth of the terminal and the PRB of the upper boundary of the BWP of the terminal in the frequency domain, or The first information may include an offset of an edge PRB of an upper boundary in a channel bandwidth of the terminal and a PRB of an upper boundary of the BWP of the terminal in a frequency domain, or the first information may include a central PRB in a channel bandwidth of the terminal. An offset of the PRB in the upper boundary of the BWP of the terminal in the frequency domain, or the first information may include an edge PRB of a lower boundary in the channel bandwidth of the terminal and a central PRB in the BWP of the terminal. The offset on the domain, or The first information may include an offset of an edge PRB of an upper boundary in a channel bandwidth of the terminal and a center PRB of the BWP of the terminal in a frequency domain, or the first information may include a central PRB in a channel bandwidth of the terminal The offset of the center PRB in the BWP of the terminal in the frequency domain.

The third implementation manner will be specifically described below.

Configure the relative positional relationship between several BWPs and the channel bandwidth of the terminal. The network device may indicate a location relationship between a certain type of BWP of the terminal and a channel bandwidth of the terminal.

For example, the following three relative positional relationships are predefined.

The first relative positional relationship is as shown in FIG. 9. The edge PRB of the lower boundary in the channel bandwidth of the terminal is aligned with the first PRB in the BWP of the terminal, that is, the first resource in the channel bandwidth of the terminal. The unit is the same as the first resource unit in the BWP of the terminal.

For the second relative positional relationship, as shown in FIG. 10, the first information indicates that an edge PRB of an upper boundary in a channel bandwidth of the terminal is aligned with an edge PRB of an upper boundary of the BWP of the terminal. That is, the Xth resource unit in the channel bandwidth of the terminal is the same as the Yth resource unit in the BWP of the terminal, where X is equal to the number of resource units in the channel bandwidth of the terminal, and the Y is equal to The number of resource units in the BWP of the terminal.

A third relative positional relationship is shown in FIG. 11. The first information indicates that the center PRB in the channel bandwidth of the terminal is aligned with the center PRB in the BWP of the terminal. That is, the i-th resource unit in the channel bandwidth of the terminal is the same as the j-th resource unit in the BWP of the terminal, and if X is an even number, i is equal to X/2 or X/2+1; if X is an odd number, i is equal to (X+1)/2; if Y is an even number, j is equal to Y/2 or Y/2+1; if Y is an odd number, j is equal to (Y+1)/2, where X is equal to The number of resource units in the channel bandwidth of the terminal, where Y is equal to the number of resource units in the BWP of the terminal.

The network device can indicate a certain relative positional relationship of the terminal according to the configuration.

Optionally, when the network device can send the configuration information of the BWP to the terminal, the relative positional relationship adopted is sent to the terminal. An indication field may also be added to the configuration information, where the indication field is used to indicate which relative position relationship is used by the terminal, for example, the indication field occupies 2 bits, and when the indication field is 00, the first relative position relationship is adopted. When the indication field is 01, the second relative positional relationship is adopted, and when the indication domain is 10, the third relative positional relationship is adopted.

The fourth implementation manner will be specifically described below.

The network device may indicate an offset of a frequency point of the terminal's channel bandwidth relative to the upconverted carrier frequency position of the terminal, thereby indicating the location of the channel bandwidth of the terminal. The frequency of the channel in the terminal may be the center frequency of the channel bandwidth, the lowest frequency of the channel bandwidth, the highest frequency point of the channel bandwidth, or any frequency point in the channel bandwidth, which is not limited in this application. In the following, the network device indicates the offset of the center frequency of the channel bandwidth of the terminal relative to the up-converted carrier frequency position of the terminal, thereby indicating the location of the channel bandwidth of the terminal as an example, and replacing the “central frequency point of the channel bandwidth” therein For other frequency points A of the channel bandwidth, a corresponding method can be obtained: the network device can indicate the offset of the channel bandwidth IF of the terminal from the upconverted carrier frequency position of the terminal, thereby indicating the location of the channel bandwidth of the terminal.

The network device may indicate an offset of the center frequency of the channel bandwidth of the terminal from the upconverted carrier frequency position of the terminal, thereby indicating the location of the channel bandwidth of the terminal. Based on the offset and the upconverted carrier frequency position of the terminal, the terminal can determine the center frequency of its channel bandwidth so that the location of the channel bandwidth of the terminal can be determined. When the terminal determines the center frequency of its channel bandwidth, for example, the frequency of the center frequency of the channel bandwidth of the terminal plus the frequency corresponding to the offset is equal to the upconverted carrier frequency of the terminal, or the frequency of the center frequency of the channel bandwidth of the terminal. The frequency corresponding to the offset is equal to the upconverted carrier frequency of the terminal.

In the embodiment of the present application, the upconverted carrier frequency position of the terminal may be pre-configured, or the network device may indicate the terminal by using signaling, and the method does not limit the determining manner, for example, the upconverted carrier frequency position of the terminal. The method of determining may be the method specified in the 5G standard protocol (for example, 38.211 protocol, or 38.211 protocol combined with other 38 series protocols) formulated by the third generation partnership project (3GPP), or the 3GPP standard proposal. The way discussed.

Illustratively, the first information includes an offset of a center frequency point of a channel bandwidth of the terminal from an upconverted carrier frequency position of the terminal.

The unit of the offset of the center frequency of the channel bandwidth of the terminal from the upconverted carrier frequency position of the terminal may be Hertz or a resource unit. The resource unit may be a subcarrier, an RB, a global frequency grid, or a channel grid. The application is not limited.

In a possible implementation, the offset of the center frequency of the channel bandwidth of the terminal relative to the upconverted carrier frequency position of the terminal is SC _offset subcarriers or RBs, and SC _offset is an integer. In the embodiment of the present application, the integer may be -1, -2, -3 or other negative integer less than -3, or may be 0, or may be 1, 2, 3 or other positive integers greater than 3. No restrictions.

The sub-carrier spacing corresponding to the SC _offset subcarriers or RBs may be a pre-configured subcarrier spacing. For example, for a frequency band less than or equal to 6 GHz, the sub-carrier spacing corresponding to the SC _offset subcarriers or RBs is preconfigured to be 15 kHz. For example, for a frequency band greater than 6 GHz, the sub-carrier spacing corresponding to the SC _offset subcarriers or RBs is pre-configured to be 60 kHz.

The sub-carrier spacing corresponding to the SC _offset sub-carriers or RBs may also be the minimum or maximum sub-carrier spacing configured on the carrier, or may be the minimum or maximum sub-carrier spacing configurable on the carrier.

In the embodiment of the present application, the subcarrier spacing configured on the carrier may be the subcarrier spacing actually configured on the carrier, or the subcarrier spacing already configured on the carrier; the configurable subcarrier spacing on the carrier may be on the carrier. The candidate subcarrier spacing is either the supported subcarrier spacing on the carrier. The subcarrier spacing configured on the carrier may be included in a configurable subcarrier spacing on the carrier, and the configurable subcarrier spacing on one carrier may be actually configured as a subcarrier spacing configured on one carrier. The minimum subcarrier spacing configured on the carrier may be the minimum of the actually configured subcarrier spacings on the carrier, and the minimum configurable minimum subcarrier spacing on the carrier may be the minimum of the candidate subcarrier spacing on the carrier. The maximum subcarrier spacing configured on the carrier may be the maximum of the actually configured subcarrier spacings on the carrier, and the maximum configurable subcarrier spacing on the carrier may be the maximum of the candidate subcarrier spacings on the carrier. Illustratively, the configurable subcarrier spacing on the carrier or the candidate subcarrier spacing on the carrier includes 15 kHz, 30 kHz, 60 kHz, 120 kHz, 240 kHz, and 480 kHz, and the minimum configurable subcarrier spacing on the carrier is 15 kHz, configurable on the carrier. The maximum subcarrier spacing is 480 kHz. One or more of the subcarrier spacings configurable on the carrier may be physically configured as subcarrier spacing configured on the carrier. If the subcarrier spacing actually configured on the carrier includes 30 kHz and 60 kHz, the minimum subcarrier spacing configured on the carrier is 30 kHz, and the maximum subcarrier spacing configured on the carrier is 60 kHz.

The sub-carrier spacing corresponding to the SC _offset sub-carriers or RBs may also be configured by the network device by using signaling. For example, the network device sends third information to the terminal, where the third information is used to indicate the sub-carrier spacing corresponding to the SC _offset subcarrier or RB.

In a possible implementation, the offset of the center frequency of the channel bandwidth of the terminal relative to the upconverted carrier frequency position of the terminal is Rs _offset global frequency grid or Rs _offset channel grid, and Rs _offset is an integer.

The fifth implementation manner will be specifically described below.

The network device may indicate an offset of a frequency point in the channel bandwidth of the terminal from the center subcarrier of the resource cell, thereby indicating the location of the channel bandwidth of the terminal. The frequency of the channel in the terminal may be the center frequency of the channel bandwidth, the lowest frequency of the channel bandwidth, the highest frequency point of the channel bandwidth, or any frequency point in the channel bandwidth, which is not limited in this application. Further, the central subcarrier of the resource cell in the method may also be extended or replaced with any location in the resource cell or any subcarrier, which is not limited in this application, such as the lowest frequency or lowest frequency subcarrier of the resource cell, or For example, the highest frequency point or the highest frequency subcarrier of the resource grid. The network device indicates the offset of the center frequency of the channel bandwidth of the terminal with respect to the center subcarrier of the resource cell, thereby indicating the location of the channel bandwidth of the terminal as an example, and replaces the “center frequency of the channel bandwidth” with For other frequency points A of the channel bandwidth, a corresponding method can be obtained: the network device indicates the offset of the frequency point A of the channel bandwidth of the terminal from the central subcarrier of the resource grid, thereby indicating the location of the channel bandwidth of the terminal.

The network device may indicate the offset of the center frequency of the channel bandwidth of the terminal from the center subcarrier of the resource cell, thereby indicating the location of the channel bandwidth of the terminal. Based on the offset and the location of the central subcarrier of the resource cell, the terminal can determine the center frequency of its channel bandwidth so that the location of the channel bandwidth of the terminal can be determined. When the terminal determines the center frequency of its channel bandwidth, for example, the frequency of the center frequency of the channel bandwidth of the terminal plus the frequency corresponding to the offset is equal to the offset of the central subcarrier of the resource grid, or the center frequency of the channel bandwidth of the terminal The frequency of the point minus the frequency corresponding to the offset is equal to the offset of the center subcarrier of the resource cell.

In the embodiment of the present application, the location of the central subcarrier of the resource grid may be the location of the resource grid or determined by the location of the resource grid. The location of the resource grid may be pre-configured, or the network device may use the signaling as the terminal. Instructed, the application does not limit its determination manner, for example, the location of the resource grid may be determined in the manner specified in the 5G standard protocol (for example, 38.211 protocol, or 38.211 protocol combined with other 38 series protocols) formulated by 3GPP, or It is the approach discussed in the 3GPP standard proposal. Illustratively, the resource grid includes RB 0 to RB

Total

RBs, each of which includes subcarrier 0 to subcarrier 11 for a total of 12 subcarriers. when

When it is even, that is

The RB index of the central subcarrier of the resource cell is

The center subcarrier of the resource cell has a subcarrier index of 0 in the RB. when

When it is odd, that is

The RB index of the central subcarrier of the resource cell is

The center subcarrier of the resource cell has a subcarrier index of 6 in the RB.

Illustratively, the first information includes an offset of a center frequency point of a channel bandwidth of the terminal from a center subcarrier of the resource grid.

The unit of the offset of the center frequency of the channel bandwidth of the terminal from the center subcarrier of the resource grid may be Hertz or a resource unit. The resource unit may be a subcarrier, an RB, a global frequency grid, or a channel grid. The application is not limited.

In a possible implementation, the offset of the center frequency of the channel bandwidth of the terminal relative to the central subcarrier of the resource grid is

Global frequency grid or

Channel grid,

Is an integer.

Subcarriers or RBs. among them,

As an integer, this

The subcarrier spacing corresponding to each subcarrier or RB is the subcarrier spacing corresponding to the resource grid. The subcarrier spacing corresponding to the resource frame may be a preconfigured subcarrier spacing. Illustratively, for a frequency band less than or equal to 6 GHz, the pre-configured resource cell corresponds to a subcarrier spacing of 15 kHz. By way of example, for a frequency band greater than 6 GHz, the pre-configured resource cell corresponds to a subcarrier spacing of 60 kHz.

The subcarrier spacing corresponding to the resource grid may also be the minimum subcarrier spacing configured on the carrier, or may be the minimum subcarrier spacing configurable on the carrier, the maximum subcarrier spacing configured on the carrier, or the maximum configurable on the carrier. Subcarrier spacing.

The subcarrier spacing corresponding to the resource grid may also be that the network device configures the terminal by signaling. Exemplarily, the network device sends fourth information to the terminal, where the fourth information is used to indicate a subcarrier spacing of the resource grid.

The embodiment of the present application further provides a data transmission method for determining a location of a channel bandwidth of a terminal. The method includes: the network device performs data transmission by using the resource in the channel bandwidth of the terminal, and the center frequency of the channel bandwidth of the terminal is aligned with the central subcarrier of the resource grid. The data transmission may be that the network device sends data to the terminal, or the terminal may send data to the network device, which is not limited in this application. In the method, the central frequency point of the channel bandwidth of the pre-configured terminal is aligned with the central sub-carrier of the resource grid. After the terminal determines the location of the resource grid, the location of the central sub-carrier of the resource grid is used as the central frequency of the channel bandwidth of the terminal. The location of the point so that the location of the channel bandwidth of the terminal can be determined.

Optionally, the central subcarrier of the resource cell in the method may also be extended or replaced with any location or any subcarrier in the resource cell, which is not limited in this application, such as the lowest frequency or lowest frequency subcarrier of the resource grid. Or for example, the highest frequency point or the highest frequency subcarrier of the resource grid.

Optionally, the center frequency of the channel bandwidth in the method may also be expanded or replaced by any position in the channel bandwidth, which is not limited in this application, such as the lowest frequency of the channel bandwidth, the highest frequency point of the channel bandwidth, or Other frequencies in the channel bandwidth.

In a possible implementation, if the resource frame size corresponding to the minimum subcarrier interval and the maximum transmission bandwidth configuration corresponding to the minimum subcarrier interval are the same, the subcarrier corresponding to the resource frame of the central frequency carrier aligned with the center frequency of the channel bandwidth The interval is the minimum subcarrier spacing. The minimum subcarrier spacing is a minimum subcarrier spacing configured on a carrier or a configurable minimum subcarrier spacing on a carrier. The unit of the resource grid size may be an RB, and the resource grid size may also be described as an RB included in the resource grid.

Illustratively, the subcarrier spacing configured on the carrier or the configurable subcarrier spacing on the carrier includes 15 kHz, 30 kHz, and 60 kHz, and the minimum subcarrier spacing is 15 kHz. If the channel bandwidth of the terminal is 15 MHz, the maximum transmission bandwidth corresponding to 15 kHz is configured as For 79 RBs, the maximum transmission bandwidth corresponding to 30 kHz is configured to 38 RBs, and the maximum transmission bandwidth corresponding to 60 kHz is configured to be 16 RBs. As shown in FIG. 18, if the resource cell size corresponding to 15 kHz is 79 RBs, the 79 RBs are RB 0 to RB 78 corresponding to 15 kHz in FIG. 18, that is, the resource cell size corresponding to the minimum subcarrier spacing and The minimum transmission bandwidth configuration corresponding to the minimum subcarrier spacing is the same, and the subcarrier spacing corresponding to the resource grid is 15 kHz, that is, the center frequency point in the channel bandwidth of the terminal is aligned with the center subcarrier of the resource grid corresponding to the 15 kHz subcarrier spacing, that is, The center frequency of the channel bandwidth is aligned with the center subcarrier of RB 39 of 15 kHz.

In a possible design, if the resource frame size corresponding to the minimum subcarrier interval is different from the maximum transmission bandwidth configuration corresponding to the minimum subcarrier interval, the subcarrier corresponding to the resource frame aligned with the center frequency of the center subcarrier and the channel bandwidth The interval is the first subcarrier interval, and the product of the resource cell size corresponding to the first subcarrier interval and the first subcarrier interval is greater than or equal to the product of the resource cell size corresponding to the second subcarrier interval and the second subcarrier interval, and second. The subcarrier spacing and the first subcarrier spacing are subcarrier spacings configured on the carrier, or the second subcarrier spacing and the first subcarrier spacing are configurable subcarrier spacings on the carrier. The scheme may also be described as: if the resource cell size corresponding to the minimum subcarrier interval is different from the maximum transmission bandwidth configuration corresponding to the minimum subcarrier interval, the subcarrier spacing corresponding to the resource cell is the first subcarrier spacing, first The product of the resource cell size corresponding to the subcarrier spacing and the first subcarrier spacing is greater than or equal to the product of the resource cell size corresponding to the other subcarrier spacing and the other subcarrier spacing, and the other subcarrier spacing is the subcarrier spacing configured on the carrier. Or a configurable subcarrier spacing on the carrier.

Illustratively, the subcarrier spacing configured on the carrier or the configurable subcarrier spacing on the carrier includes 15 kHz, 30 kHz, and 60 kHz, and the minimum subcarrier spacing is 15 kHz. If the channel bandwidth of the terminal is 15 MHz, the maximum transmission bandwidth corresponding to 15 kHz is configured as For 79 RBs, the maximum transmission bandwidth corresponding to 30 kHz is configured to 38 RBs, and the maximum transmission bandwidth corresponding to 60 kHz is configured to 18 RBs. If the resource cells corresponding to 15 kHz, 30 kHz, and 60 kHz are 50 RBs, 30 RBs, and 16 RBs respectively, the resource frame size corresponding to the minimum subcarrier interval and the maximum transmission bandwidth configuration corresponding to the minimum subcarrier interval are different. For 15 kHz, 30 kHz, and 60 kHz, the product of the resource cell size and the subcarrier spacing are: 750 (15 kHz multiplied by 50), 900 (30 kHz multiplied by 30), and 960 (60 kHz multiplied by 16), since 960 is greater than 750 and 900, The center frequency point in the channel bandwidth of the terminal is aligned with the center subcarrier of the resource cell corresponding to the 60 Hz subcarrier spacing.

In a possible design, if the resource frame size corresponding to the minimum subcarrier interval is different from the maximum transmission bandwidth configuration corresponding to the minimum subcarrier interval, the subcarrier corresponding to the resource frame aligned with the center frequency of the center subcarrier and the channel bandwidth The interval is the first subcarrier interval, and the product of the resource cell size corresponding to the first subcarrier interval and the first subcarrier interval is smaller than the product of the resource cell size corresponding to the second subcarrier interval and the second subcarrier interval, and the second subcarrier The interval and the first subcarrier spacing are subcarrier spacings configured on the carrier, or the second subcarrier spacing and the first subcarrier spacing are configurable subcarrier spacings on the carrier.

In a possible implementation, if the resource frame size corresponding to the maximum subcarrier interval is the same as the maximum transmission bandwidth configuration corresponding to the maximum subcarrier interval, the subcarrier corresponding to the resource frame of the central frequency carrier and the center frequency of the channel bandwidth is aligned. The interval is the maximum subcarrier spacing. The maximum subcarrier spacing is a maximum subcarrier spacing configured on a carrier or a maximum subcarrier spacing configurable on a carrier.

In a possible implementation, if the resource frame size corresponding to the maximum subcarrier interval is different from the maximum transmission bandwidth configuration corresponding to the maximum subcarrier interval, the subcarrier corresponding to the resource frame aligned with the center frequency of the center subcarrier and the channel bandwidth The interval is the first subcarrier interval, and the product of the resource cell size corresponding to the first subcarrier interval and the first subcarrier interval is greater than or equal to the product of the resource cell size corresponding to the second subcarrier interval and the second subcarrier interval, and second. The subcarrier spacing and the first subcarrier spacing are subcarrier spacings configured on the carrier, or the second subcarrier spacing and the first subcarrier spacing are configurable subcarrier spacings on the carrier.

In a possible implementation, if the resource frame size corresponding to the maximum subcarrier interval is different from the maximum transmission bandwidth configuration corresponding to the maximum subcarrier interval, the subcarrier corresponding to the resource frame aligned with the center frequency of the center subcarrier and the channel bandwidth The interval is the first subcarrier interval, and the product of the resource cell size corresponding to the first subcarrier interval and the first subcarrier interval is smaller than the product of the resource cell size corresponding to the second subcarrier interval and the second subcarrier interval, and the second subcarrier The interval and the first subcarrier spacing are subcarrier spacings configured on the carrier, or the second subcarrier spacing and the first subcarrier spacing are configurable subcarrier spacings on the carrier.

In a possible implementation, the subcarrier spacing corresponding to the center frequency of the central subcarrier and the channel frequency aligned with the channel bandwidth is the minimum subcarrier spacing configured on the carrier or the smallest subcarrier spacing configurable on the carrier, or The subcarrier spacing corresponding to the resource grid is the maximum subcarrier spacing configured on the carrier or the maximum subcarrier spacing configurable on the carrier.

In a possible implementation, the subcarrier spacing corresponding to the resource bin aligned with the center frequency of the center subcarrier and the channel bandwidth is a preconfigured subcarrier spacing. Illustratively, for a frequency band less than or equal to 6 GHz, the pre-configured subcarrier spacing is 15 kHz. Again, for a frequency band greater than 6 GHz, the pre-configured subcarrier spacing is 60 kHz.

In a possible implementation, the subcarrier spacing corresponding to the resource frame aligned with the center frequency of the center subcarrier and the channel bandwidth may also be configured by the network device to be configured by the terminal. For example, the network device sends fifth information for the terminal, where the fifth information is used to indicate the subcarrier spacing of the resource grid, and the center frequency of the channel bandwidth is aligned with the center subcarrier of the resource grid.

Based on any embodiment of the present application, multiple BWPs may be configured to correspond to a channel bandwidth of one terminal, and may also correspond to channel bandwidths of multiple terminals. When corresponding to multiple types, for each BWP bandwidth, the network device not only informs the location of the channel bandwidth of the terminal but also the size of the channel bandwidth of the terminal. The location of the channel bandwidth of the network device notifying the terminal and the size of the channel bandwidth of the notification terminal may be notified by different information bits in the signaling, or may be notified by different signaling, or may be pre-defined implicitly. determine. Specifically, how to notify the location of the channel bandwidth of the terminal, any one of the foregoing implementation manners to the third implementation manner may be used, and details are not described herein again.

For example, the BWP configured for the terminal includes the following three types: BWP0=6RB, BWP1=25RB, and BWP2=75RB. The channel bandwidth of each terminal that can be used by each BWP is as follows: 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz.

Take the third implementation as an example: for BWP0=6RB, there are five types of terminal channel bandwidths: {1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz}, and three relative positions in the third implementation can be used. Relationships, thus including 5*3=15 combinations.

For BWP1=25RB, there are three types of channel bandwidths: {5MHz, 10MHz, 15MHz}, and three relative positional relationships among the third implementations can be used, including 3*3=9 combinations.

For BWP2=75RB, there may be a channel bandwidth of one type of terminal: {15MHz}, and three relative positional relationships among the third implementation manners may be adopted, thereby including 1*3=3 combinations.

When the network device notifies the location of the channel bandwidth of the terminal and informs the terminal of the channel bandwidth, when different information bits are used to indicate, the indication can be jointly indicated by the 4-bit information bits. For example, for BWP0, 0000, 1.4 is used. The channel bandwidth of the MHz terminal adopts the first relative positional relationship; 0001 indicates the channel bandwidth of the terminal using 1.4 MHz, and the second relative positional relationship is adopted.

When the network device notifies the location of the channel bandwidth of the terminal and the size of the channel bandwidth of the notification terminal, when different information bits are used to indicate, the relative positional relationship used and the indication terminal may be separately indicated by the high bit and the low bit. The size of the channel bandwidth, for example, indicates the size of the channel bandwidth of the terminal by a high 3 bits, and indicates the relative positional relationship adopted by the lower 2 bits.

In the embodiment of the present application, the size of the channel bandwidth of the terminal may not be notified by the network device, and is determined by the terminal in an implicit manner.

The network device and the terminal are configured with the corresponding relationship between the different channel bandwidths of the terminal and the bandwidth of the different terminal-side transmission configurations. For example, as shown in Table 5 below, the bandwidth of the terminal-side transmission configuration corresponding to one channel bandwidth is The number of resource units in the one channel bandwidth that can be used to transmit data.

table 5

The network device sends configuration information of the BWP to the terminal, where the configuration information of the BWP includes the bandwidth of the BWP. After receiving the configuration information, the terminal determines, according to the configured correspondence (such as Table 5), the BWP. The size of the channel bandwidth of the terminal. Specifically, determining a first channel bandwidth size in the configured correspondence, the first channel bandwidth size is equal to a minimum value in the first set; and the terminal side transmission configuration bandwidth included in the first set is greater than or equal to The bandwidth of the BWP. The first channel bandwidth is used as a channel bandwidth of a terminal corresponding to the BWP.

For example, the correspondence between different channel bandwidth sizes of the terminal and different terminal side transmission configuration bandwidth sizes can be seen in Table 6 below.

Table 6

BW _channel(MHz) BW _channel (MHz)	1.41.4	33	55	1010	1515	2020
N _RB(RB) N _RB (RB)	66	1515	2525	5050	7575	100100

The BW _channel (MHz) indicates the size of the channel bandwidth of the terminal, and the N _RB indicates the size of the transmission bandwidth of the terminal side.

For example, the corresponding relationship shown in Table 6 is used. For example, if the bandwidth of the BWP configured by the network device is 51 RBs, the transmission bandwidth of the terminal side of the 51 RBs is 75 RBs and 100 RBs respectively, so the minimum value is 75 RBs. The channel bandwidth is 15 MHz, so that the channel bandwidth corresponding to the BWP is 15 MHz. In this way, the configuration can meet the BWP bandwidth requirement, and the network device is not required to notify the terminal, thereby saving transmission resources.

One possible scenario in which a BWP configuration can be applied is for terminal energy saving. As shown in FIG. 12, the terminal configures two BWPs as BWP0 and BWP1 respectively. Since the bandwidth of the BWP1 is larger than the bandwidth of the BWP0, the channel bandwidth of the terminal corresponding to the BWP1 uses the channel bandwidth of the terminal, so that the BWP0 corresponds to The channel bandwidth of the terminal adopts the channel bandwidth 0 of the terminal, and the size of the channel bandwidth 1 of the terminal is larger than the size of the channel bandwidth 0 of the terminal. In the first time unit, the terminal is on BWP0, and the terminal can only use the channel bandwidth 0 of the terminal. When there is data scheduling, the terminal will switch to BWP1, and the radio of the terminal also switches to the channel bandwidth of the terminal within the protection time of the radio frequency switching. As the power consumption of the terminal increases with the increase of the radio frequency bandwidth, the terminal only uses the channel bandwidth 0 of the small terminal to monitor the physical downlink control channel (PDCCH) when there is no data scheduling. Thereby saving energy consumption of the terminal. The protection time of the radio frequency switching may be pre-configured by the network device to the terminal, or may be specified by a protocol.

In addition, while saving the power consumption of the terminal, the protection time of the radio frequency switching needs to be introduced in the time domain due to the switching of the radio frequency. In the protection time, the terminal cannot send or receive data, thereby causing waste of resources. For some terminals, it is not desirable to introduce protection time frequently to waste resources at certain times, or the terminal does not need to save energy. Based on this, the network device can configure the channel bandwidth 1 of the terminal for both the BWP0 and the BWP1 of the terminal. As shown in FIG. 13, the switching of the terminal radio can be prevented from occupying the protection time, resulting in waste of resources.

Based on the solution provided by the embodiment of the present application, for different terminals, the channel bandwidth of the terminal corresponding to different BWPs can be configured according to requirements, thereby improving the flexibility of the BWP configuration application.

In the embodiment provided by the present application, the method provided by the embodiment of the present application is introduced from the perspective of interaction between the network device, the terminal, and the network device and the terminal. In order to implement the functions in the foregoing method provided by the embodiments of the present application, the network device and the terminal may include a hardware structure and/or a software module, and implement the foregoing functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. One of the above functions is performed in a hardware structure, a software module, or a hardware structure plus a software module, depending on the specific application and design constraints of the technical solution.

Based on the same inventive concept as the method embodiment corresponding to FIG. 8 to FIG. 13 above, the embodiment of the present application provides a device for implementing the function of the network device in the foregoing method. The device may be a network device or a device in a network device. Referring to FIG. 14 , the device includes: a generating module 1401 and a sending module 1402, where the modules can perform the corresponding functions performed by the network device in the method embodiment corresponding to FIG. 8 to FIG. 13 , and the generating module 1401 is configured to generate the first Information such as information, second information, or configuration information. The sending module 1402 is configured to perform the function of sending information such as the first information, the second information, and the configuration information. For details, refer to the detailed description in the method example, which is not described herein.

The division of the modules in the embodiment of the present application is schematic, and is only a logical function division. In actual implementation, there may be another division manner. In addition, each functional module in each embodiment of the present application may be integrated into one processing. In the device, it can also be physically existed alone, or two or more modules can be integrated into one module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules.

As shown in FIG. 15 , the device 1500 is provided to implement the functions of the network device in the foregoing method. The device may be a network device or a device in a network device. Wherein, the device can be a chip system. In the embodiment of the present application, the chip system may be composed of a chip, and may also include a chip and other discrete devices. The device 1500 includes a processor 1520 for implementing the functions of the network device in the method provided by the embodiment of the present application. Exemplarily, the processor 1520 may generate and send information such as the first information, the second information, the third information, the fourth information, the fifth information, or the configuration information, and the specific description in the method example is not performed here. Narration.

Apparatus 1500 can also include a memory 1530 for storing program instructions and/or data. Memory 1530 is coupled to processor 1520. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, and may be in an electrical, mechanical or other form for information interaction between devices, units or modules. Processor 1520 may operate in conjunction with memory 1530. Processor 1520 may execute program instructions stored in memory 1530.

The device 1500 can also include a transceiver 1510 for communicating with other devices via a transmission medium such that devices for use in the device 1500 can communicate with other devices. Illustratively, the other device may be a terminal. The processor 1520 uses the transceiver 1510 to transmit and receive data, and is used to implement the method performed by the network device described in the foregoing method embodiments.

The specific connection medium between the above transceiver 1510, the processor 1520, and the memory 1530 is not limited in the embodiment of the present application. In the embodiment of the present application, the memory 1530, the processor 1520, and the transceiver 1510 are connected by a bus 1540 in FIG. 15, and the bus is indicated by a thick line in FIG. 15, and the connection manner between other components is only schematically illustrated. , not limited to. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 15, but it does not mean that there is only one bus or one type of bus.

In this embodiment, the processor may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or a transistor logic device, a discrete hardware component, or may be implemented or The methods, steps, and logical block diagrams disclosed in the embodiments of the present application are performed. A general purpose processor can be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly implemented by the hardware processor, or may be performed by a combination of hardware and software modules in the processor.

In this embodiment, the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), or may be a volatile memory, such as Random-access memory (RAM). A memory is any other medium that can be used to carry or store desired program code in the form of an instruction or data structure and can be accessed by a computer, but is not limited thereto.

Based on the same inventive concept as the embodiment shown in FIG. 3 to FIG. 13 , the embodiment of the present application further provides an apparatus for implementing the function of the terminal in the foregoing method. The device may be a terminal or a device in the terminal. Referring to FIG. 16, the device includes: a receiving module 1601 and a determining module 1602. The receiving module 1601 is configured to receive first information, where the first information is used to indicate a location of a channel bandwidth of the terminal, and the determining module 1602 is configured to use Determining a location of a channel bandwidth of the terminal based on the first information.

Optionally, the receiving module 1601 is further configured to receive and send the second information, where the second information is used to indicate a size of a channel bandwidth of the terminal, where the determining module 1602 is configured to determine, according to the second information, The size of the channel bandwidth of the terminal.

Optionally, the receiving module 1601 is further configured to receive configuration information of the BWP, where the BWP configuration information includes a bandwidth of the BWP, and the determining module 1602 is further configured to: according to the configured correspondence and the BWP The size of the bandwidth determines the size of the channel bandwidth of the terminal corresponding to the BWP; wherein the corresponding relationship of the configuration is a correspondence between a channel bandwidth size of the terminal and a transmission bandwidth of the terminal side, and a channel bandwidth size corresponds to The configured bandwidth size is the number of resource units in the one channel bandwidth that can be used to transmit data; the size of the channel bandwidth of the terminal is equal to the first channel bandwidth, and the first channel bandwidth is equal to the minimum in the first set. The value of the terminal side transmission configuration bandwidth included in the first set is greater than or equal to the bandwidth of the BWP.

Specifically, the receiving module 1601 and the determining module 1602 can perform the corresponding functions performed by the terminal in the method embodiment corresponding to the foregoing FIG. 8 to FIG. 13 , and details are not described herein again.

As shown in FIG. 17, the apparatus 1700 is provided to implement the functions of the terminal in the foregoing method. The device may be a terminal or a device in the terminal. Wherein, the device can be a chip system. In the embodiment of the present application, the chip system may be composed of a chip, and may also include a chip and other discrete devices. The device 1700 includes a processor 1720 for implementing the functions of the terminal in the method provided by the embodiment of the present application. For example, the processor 1720 can receive and process information such as the first information, the second information, the third information, the fourth information, the fifth information, or the configuration information. For details, refer to the detailed description in the method example. Narration.

Apparatus 1700 can also include a memory 1730 for storing program instructions and/or data. Memory 1730 is coupled to processor 1720. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, and may be in an electrical, mechanical or other form for information interaction between devices, units or modules. Processor 1720 may operate in conjunction with memory 1730. The processor 1720 may execute program instructions stored in the memory 1730.

The device 1700 can also include a transceiver 1710 for communicating with other devices via a transmission medium such that devices for use in the device 1700 can communicate with other devices. Illustratively, the other device may be a network device. The processor 1720 transmits and receives data using the transceiver 1710 and is used to implement the method performed by the terminal described in the above method. In the implementation process, each step of the processing flow may be completed by an integrated logic circuit of hardware in the processor 1720 or an instruction in the form of software.

The specific connection medium between the above transceiver 1710, the processor 1720, and the memory 1730 is not limited in the embodiment of the present application. In the embodiment of the present application, the memory 1730, the processor 1720, and the transceiver 1710 are connected by a bus 1740 in FIG. 17, and the bus is indicated by a thick line in FIG. 17, and the connection manner between other components is only schematically illustrated. , not limited to. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 17, but it does not mean that there is only one bus or one type of bus.

The method provided by the embodiment of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, a network device, a user device, or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transmission to another website site, computer, server or data center via wired (eg coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg infrared, wireless, microwave, etc.). The computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a digital video disc (DVD)), or a semiconductor medium (for example, an SSD) or the like.

It will be apparent to those skilled in the art that various modifications and changes can be made in the present application without departing from the scope of the application. Thus, it is intended that the present invention cover the modifications and variations of the present invention.

Claims

An information transmission method, comprising:

Sending the first information, where the first information is used to indicate the location of the channel bandwidth of the terminal, the channel bandwidth is a radio frequency bandwidth, and the radio frequency bandwidth includes an uplink or downlink transmission resource.
The method according to claim 1, wherein the first information comprises an absolute frequency channel number corresponding to a reference frequency point in a channel bandwidth of the terminal, where

The reference frequency point in the channel bandwidth of the terminal is a center frequency point in the channel bandwidth of the terminal;

a reference frequency point in a channel bandwidth of the terminal is a minimum frequency point in a channel bandwidth of the terminal; or

The reference frequency point in the channel bandwidth of the terminal is the maximum frequency point in the channel bandwidth of the terminal.
The method according to claim 1 or 2, wherein the first information is used to indicate a location of a channel bandwidth of the terminal, including:

One of the first information is used to indicate a location of a channel bandwidth of the terminal, and the one channel bandwidth corresponds to a bandwidth portion BWP of the terminal;

The BWP of the one terminal includes a part of continuous frequency domain resources in a carrier bandwidth.
The method according to claim 1, wherein the first information comprises an offset of an nth resource unit in a channel bandwidth of the terminal relative to a reference resource unit in a frequency domain, wherein:

The n is a positive integer less than or equal to M, where M is the number of resource units in the channel bandwidth of the terminal;

The reference resource unit is a predefined resource unit or a reference point of a BWP of the terminal, and the BWP of the terminal includes a part of consecutive frequency domain resources in a carrier bandwidth.
The method of claim 4 wherein:

The n is equal to 1;

The n is equal to the M;

If the M is an even number, the n is equal to M/2 or M/2+1; or

If the M is an odd number, the n is equal to (N+1)/2.
The method according to claim 4 or 5, wherein the reference resource unit is the qth resource unit in the BWP of the terminal, and the q is an integer less than or equal to Q, where Q is the The number of resource units in the BWP of the terminal.
The method of claim 6 wherein:

The q is equal to 1;

The q is equal to the Q;

If the Q is an even number, the q is equal to Q/2 or Q/2+1; or

If the Q is an odd number, the q is equal to (Q + 1)/2.
The method according to claim 1, wherein the first information is used to indicate a location of a channel bandwidth of the terminal, and the first information is used to indicate: a first resource in a channel bandwidth of the terminal. The unit is the same as the first resource unit in the BWP of the terminal, where the Xth resource unit of the terminal is the same as the Yth resource unit of the BWP of the terminal, or the channel bandwidth of the terminal The i-th resource unit is the same as the j-th resource unit in the BWP of the terminal, where:

The X is equal to the number of resource units in the channel bandwidth of the terminal, and the Y is equal to the number of resource units in the BWP of the terminal;

If X is an even number, i is equal to X/2 or X/2+1; if X is an odd number, i is equal to (X+1)/2;

If Y is an even number, j is equal to Y/2 or Y/2+1; if Y is an odd number, j is equal to (Y+1)/2;

The BWP of the terminal includes a part of continuous frequency domain resources in the carrier bandwidth.
The method according to any one of claims 1 to 8, wherein the first information is information specific to the terminal.
The method of any of claims 1 to 9, wherein the method further comprises:

And transmitting second information, where the second information is used to indicate a size of a channel bandwidth of the terminal.
The method of claim 1 wherein said first information comprises an offset of a center frequency of said terminal's channel bandwidth relative to said terminal's upconverted carrier frequency position.
The method according to claim 11, wherein the offset of the center frequency of the channel bandwidth of the terminal relative to the upconverted carrier frequency position of the terminal is Rs offset global frequency grid, Rs offset a channel raster, or an SC offset subcarrier, where SC offset is an integer and Rs offset is an integer.
The method according to claim 12, wherein the sub-carrier spacing of the SC offset subcarriers is a minimum subcarrier spacing configured on a carrier, a configurable minimum subcarrier spacing on a carrier, or a preconfigured subcarrier spacing. .
The method according to claim 12, wherein the method further comprises: transmitting third information, the third information being used to indicate a subcarrier spacing of the SC offset subcarriers.
The method of claim 1 wherein said first information comprises an offset of a center frequency of a channel bandwidth of said terminal from a center subcarrier of a resource cell.
The method according to claim 15, wherein a size of a center frequency point of a channel bandwidth of the terminal relative to a center subcarrier of the resource cell is
Global frequency grid,
Channel grid or
Subcarriers, where
As an integer,
As an integer, the
The subcarrier spacing corresponding to the subcarriers is the subcarrier spacing corresponding to the resource grid.
The method according to claim 16, wherein the subcarrier spacing corresponding to the resource grid is a minimum subcarrier spacing configured on a carrier, a minimum subcarrier spacing configurable on a carrier, or a preconfigured subcarrier spacing.
The method of claim 16, wherein the method further comprises: transmitting fourth information, the fourth information being used to indicate a subcarrier spacing of the resource bin.
An information transmission method, comprising:

Receiving the first information, where the first information is used to indicate a location of a channel bandwidth of the terminal, the channel bandwidth is a radio frequency bandwidth, and the radio frequency bandwidth includes an uplink or downlink transmission resource;

A location of a channel bandwidth of the terminal is determined based on the first information.
The method according to claim 19, wherein the first information comprises an absolute frequency channel number corresponding to a reference frequency point in a channel bandwidth of the terminal, where

The reference frequency point in the channel bandwidth of the terminal is a center frequency point in the channel bandwidth of the terminal;

a reference frequency point in a channel bandwidth of the terminal is a minimum frequency point in a channel bandwidth of the terminal; or

The reference frequency point in the channel bandwidth of the terminal is the maximum frequency point in the channel bandwidth of the terminal.
The method according to claim 19 or 20, wherein the first information is used to indicate a location of a channel bandwidth of the terminal, including:

One of the first information is used to indicate a location of a channel bandwidth of the terminal, and the one channel bandwidth corresponds to a bandwidth portion BWP of the terminal;

The BWP of the one terminal includes a part of continuous frequency domain resources in a carrier bandwidth.
The method according to claim 19, wherein the first information comprises an offset of an nth resource unit in a channel bandwidth of the terminal relative to a reference resource unit in a frequency domain, wherein:

The n is a positive integer less than or equal to M, where M is the number of resource units in the channel bandwidth of the terminal;

The reference resource unit is a predefined resource unit or a reference point of a BWP of the terminal, and the BWP of the terminal includes a part of consecutive frequency domain resources in a carrier bandwidth.
The method of claim 22 wherein:

The n is equal to 1;

The n is equal to the M;

If the M is an even number, the n is equal to M/2 or M/2+1; or

If the M is an odd number, the n is equal to (N+1)/2.
The method according to claim 22 or 23, wherein the reference resource unit is a qth resource unit in a BWP of the terminal, and the q is an integer less than or equal to Q, where Q is the The number of resource units in the BWP of the terminal.
The method of claim 24 wherein

The q is equal to 1;

The q is equal to Q;

If the Q is an even number, the q is equal to Q/2 or Q/2+1; or

If the Q is an odd number, the q is equal to (Q + 1)/2.
The method according to claim 19, wherein the first information is used to indicate a location of a channel bandwidth of the terminal, and the first information is used to indicate: the first resource in the channel bandwidth of the terminal The unit is the same as the first resource unit in the BWP of the terminal, where the Xth resource unit of the terminal is the same as the Yth resource unit of the BWP of the terminal, or the channel bandwidth of the terminal The i-th resource unit is the same as the j-th resource unit in the BWP of the terminal, where:

The X is equal to the number of resource units in the channel bandwidth of the terminal, and the Y is equal to the number of resource units in the BWP of the terminal;

If X is an even number, i is equal to X/2 or X/2+1; if X is an odd number, i is equal to (X+1)/2;

If Y is an even number, j is equal to Y/2 or Y/2+1; if Y is an odd number, j is equal to (Y+1)/2;

The BWP of the terminal includes a part of continuous frequency domain resources in the carrier bandwidth.
The method according to any one of claims 19 to 26, wherein the first information is information specific to the terminal.
The method according to any one of claims 19 to 27, wherein the method further comprises:

Receiving second information, the second information is used to indicate a size of a channel bandwidth of the terminal.
The method according to any one of claims 19 to 27, wherein the method further comprises:

Receiving configuration information of the BWP, where the configuration information of the BWP includes a bandwidth of the BWP;

Determining, according to the configured correspondence relationship and the bandwidth size of the BWP, a channel bandwidth of the terminal corresponding to the BWP;

The corresponding relationship between the configuration is a correspondence between a channel bandwidth size of the terminal and a transmission bandwidth of the terminal side.

The channel bandwidth of the terminal is equal to the first channel bandwidth, the first channel bandwidth is equal to the minimum value in the first set, and the terminal side transmission configuration bandwidth included in the first set is greater than or equal to The bandwidth of the BWP.
The method of claim 19 wherein said first information comprises an offset of a center frequency of said terminal's channel bandwidth relative to said terminal's upconverted carrier frequency position.
The method according to claim 30, wherein the offset of the center frequency of the channel bandwidth of the terminal relative to the upconverted carrier frequency position of the terminal is Rs offset global frequency grid, Rs offset a channel raster, or an SC offset subcarrier, where SC offset is an integer and Rs offset is an integer.
The method according to claim 31, wherein the subcarrier spacing of the SC offset subcarriers is a minimum subcarrier spacing configured on a carrier, a minimum subcarrier spacing configurable on a carrier, or a preconfigured subcarrier spacing. .
The method according to claim 31, wherein the method further comprises: receiving third information, the third information being used to indicate a subcarrier spacing of the SC offset subcarriers.
The method of claim 19, wherein the first information comprises an offset of a center frequency of a channel bandwidth of the terminal from a center subcarrier of a resource cell.
The method according to claim 34, wherein a size of a center frequency point of a channel bandwidth of the terminal relative to a center subcarrier of the resource cell is
Global frequency grid,
Channel grid or
Subcarriers, where
As an integer,
As an integer, the
The subcarrier spacing corresponding to the subcarriers is the subcarrier spacing corresponding to the resource grid.
The method according to claim 35, wherein the subcarrier spacing corresponding to the resource grid is a minimum subcarrier spacing configured on a carrier, a minimum subcarrier spacing configurable on a carrier, or a preconfigured subcarrier spacing.
The method of claim 35, wherein the method further comprises receiving fourth information, the fourth information being used to indicate a subcarrier spacing of the resource bin.
A data transmission method, comprising:

The data in the channel bandwidth of the terminal and the terminal perform data transmission, and the center frequency of the channel bandwidth of the terminal is aligned with the central subcarrier of the resource grid.
The method of claim 38, wherein

If the resource cell size corresponding to the minimum subcarrier interval is the same as the maximum transmission bandwidth configuration corresponding to the minimum subcarrier interval, the subcarrier spacing corresponding to the resource cell is the minimum subcarrier spacing, where the minimum subcarrier spacing is The minimum subcarrier spacing configured on the carrier or the smallest subcarrier spacing configurable on the carrier.
A method according to claim 38 or 39, wherein

If the resource frame size corresponding to the minimum subcarrier interval is different from the maximum transmission bandwidth configuration corresponding to the minimum subcarrier interval, the subcarrier spacing corresponding to the resource cell is the first subcarrier interval;

The product of the resource cell size corresponding to the first subcarrier spacing and the first subcarrier spacing is greater than or equal to the product of the resource cell size corresponding to the second subcarrier spacing and the second subcarrier spacing, where the second subcarrier spacing and The first subcarrier spacing is a subcarrier spacing configured on the carrier, or the second subcarrier spacing and the first subcarrier spacing are configurable subcarrier spacings on the carrier.
A method according to any one of claims 38 to 40, wherein

If the resource frame size corresponding to the maximum subcarrier interval is the same as the maximum transmission bandwidth configuration corresponding to the maximum subcarrier interval, the subcarrier spacing corresponding to the resource cell is the maximum subcarrier spacing, where the maximum subcarrier spacing is The maximum subcarrier spacing configured on the carrier or the maximum configurable subcarrier spacing on the carrier.
A method according to any one of claims 38 to 41, wherein

If the resource frame size corresponding to the maximum subcarrier interval is different from the maximum transmission bandwidth configuration corresponding to the maximum subcarrier interval, the subcarrier spacing corresponding to the resource cell is the first subcarrier interval;

The product of the resource cell size corresponding to the first subcarrier spacing and the first subcarrier spacing is greater than or equal to the product of the resource cell size corresponding to the second subcarrier spacing and the second subcarrier spacing, and the second subcarrier spacing and the first The subcarrier spacing is a subcarrier spacing configured on the carrier, or the second subcarrier spacing and the first subcarrier spacing are configurable subcarrier spacings on the carrier.
A method according to any one of claims 38 to 42, wherein

The subcarrier spacing corresponding to the resource grid is a minimum subcarrier spacing configured on a carrier, a minimum subcarrier spacing configurable on a carrier, a maximum subcarrier spacing configured on a carrier, a maximum subcarrier spacing configurable on a carrier, or a pre- Configured subcarrier spacing.
The method according to any one of claims 38 to 42, wherein the method further comprises: transmitting fifth information, the fifth information being used to indicate a subcarrier spacing of the resource grid.
A data transmission method, comprising:

The center frequency of the channel bandwidth of the terminal is aligned with the central subcarrier of the resource grid, and data is transmitted through resources in the channel bandwidth of the terminal.
The method of claim 45, wherein

If the resource cell size corresponding to the minimum subcarrier interval is the same as the maximum transmission bandwidth configuration corresponding to the minimum subcarrier interval, the subcarrier spacing corresponding to the resource cell is the minimum subcarrier spacing, where the minimum subcarrier spacing is The minimum subcarrier spacing configured on the carrier or the smallest subcarrier spacing configurable on the carrier.
A method according to claim 45 or 46, wherein

If the resource frame size corresponding to the minimum subcarrier interval is different from the maximum transmission bandwidth configuration corresponding to the minimum subcarrier interval, the subcarrier spacing corresponding to the resource cell is the first subcarrier interval;

The product of the resource cell size corresponding to the first subcarrier spacing and the first subcarrier spacing is greater than or equal to the product of the resource cell size corresponding to the second subcarrier spacing and the second subcarrier spacing, where the second subcarrier spacing and The first subcarrier spacing is a subcarrier spacing configured on the carrier, or the second subcarrier spacing and the first subcarrier spacing are configurable subcarrier spacings on the carrier.
A method according to any one of claims 45 to 47, wherein

If the resource frame size corresponding to the maximum subcarrier interval is the same as the maximum transmission bandwidth configuration corresponding to the maximum subcarrier interval, the subcarrier spacing corresponding to the resource cell is the maximum subcarrier spacing, where the maximum subcarrier spacing is The maximum subcarrier spacing configured on the carrier or the maximum configurable subcarrier spacing on the carrier.
A method according to any one of claims 45 to 48, wherein

If the resource frame size corresponding to the maximum subcarrier interval is different from the maximum transmission bandwidth configuration corresponding to the maximum subcarrier interval, the subcarrier spacing corresponding to the resource cell is the first subcarrier interval;

The product of the resource cell size corresponding to the first subcarrier spacing and the first subcarrier spacing is greater than or equal to the product of the resource cell size corresponding to the second subcarrier spacing and the second subcarrier spacing, and the second subcarrier spacing and the first The subcarrier spacing is a subcarrier spacing configured on the carrier, or the second subcarrier spacing and the first subcarrier spacing are configurable subcarrier spacings on the carrier.
A method according to any one of claims 45 to 49, wherein

The subcarrier spacing corresponding to the resource grid is a minimum subcarrier spacing configured on a carrier, a minimum subcarrier spacing configurable on a carrier, a maximum subcarrier spacing configured on a carrier, a maximum subcarrier spacing configurable on a carrier, or a pre- Configured subcarrier spacing.
The method according to any one of claims 45 to 49, wherein the method further comprises: receiving fifth information, the fifth information being used to indicate a subcarrier spacing of the resource grid.
A device comprising a processor and a memory, wherein:

The memory is configured to store program instructions;

The processor for invoking and executing program instructions stored in the memory, implementing the method of any one of claims 1 to 18, or implementing the method of any one of claims 38 to 44 method.
A device comprising a processor and a memory, wherein:

The memory is configured to store program instructions;

The processor for invoking and executing program instructions stored in the memory, implementing the method of any one of claims 19 to 37, or implementing the method of any one of claims 45 to 51 method.
A communication system comprising the apparatus of claim 52 and the apparatus of claim 53.
A computer readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 51.