CN114666902A

CN114666902A - Resource allocation method, communication device and communication equipment

Info

Publication number: CN114666902A
Application number: CN202210127591.3A
Authority: CN
Inventors: 黄秀璇; 李新县; 彭金磷; 王轶; 刘烈海
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-02-11
Filing date: 2022-02-11
Publication date: 2022-06-24
Also published as: WO2023151477A1; CN115190632A

Abstract

The present application provides a resource configuration method, a communication device, and a communication device. The method includes: a network device sends first information to a first terminal device, where the first information is used to indicate that the carrier frequency band of the first cell is changed from the first carrier frequency band to the first carrier frequency band. The second carrier frequency band is updated, the first cell is the serving cell of the first terminal device, and the second carrier frequency band includes frequency domain resources other than the first carrier frequency band. The network device communicates with the first terminal device on the second carrier frequency band, which can improve resource utilization.

Description

Resource allocation method, communication device and communication equipment

Technical Field

The present application relates to the field of communications, and in particular, to a resource configuration method, a communication apparatus, and a communication device.

Background

Various carrier bandwidths from 5 megahertz (MHz), 10MHz to 400MHz are defined for different subcarrier spacings in a mobile communication system, for example, for a 6 gigahertz (GHz) communication band, when the subcarrier spacing is 15kHz, the maximum carrier bandwidth that can be used by a communication device is 50MHz, and when the subcarrier spacing is 30kHz or 60kHz, the maximum carrier bandwidth that can be used is 100 MHz. For the millimeter wave communication band, the maximum carrier bandwidth may reach 200MHz when the subcarrier spacing is 120 kHz.

However, the frequency domain resource bandwidth allocable by the network operator may be different from the available carrier bandwidth defined by the system, for example, the bandwidth of the allocable frequency domain resource is 110MHz, and the 110MHz carrier bandwidth is not defined in the system, and the operator setting the communication device to use the available carrier bandwidth defined by the system would cause resource waste and decrease the utilization rate of the spectrum resource.

Disclosure of Invention

The application provides a resource allocation method, a communication device and communication equipment, so as to improve the resource utilization rate.

In a first aspect, a resource allocation method is provided, which may be executed by a network device or a module (e.g., a chip) configured in (or used for) the network device, and the following description takes the network device to execute the method as an example.

The method comprises the following steps: the network device sends first information to a first terminal device, where the first information is used to indicate that a carrier frequency band of a first cell is updated from a first carrier frequency band to a second carrier frequency band, the first cell is a serving cell of the first terminal device, and the second carrier frequency band includes frequency domain resources outside the first carrier frequency band. The network device communicates with the first terminal device over the second carrier frequency band.

According to the above-described aspect, the network device may notify the terminal device, through the first information, that the carrier band of the first cell is updated from the first carrier band to the second carrier band including resources other than the first carrier band. In this way, the network device may configure the terminal device accessing the network through the first cell to communicate with the first cell on different carrier frequency band resources, for example, the carrier frequency band of the first cell may not be a standard carrier bandwidth defined by the system, and the first cell may communicate with different terminal devices through multiple carrier frequency bands whose carrier bandwidths are standard carrier bandwidths, for example, the first cell may communicate with the first terminal device through the second carrier frequency band and communicate with the second terminal device through the first carrier frequency band. The method and the device realize that the cell communicates with different terminal devices by using a plurality of carrier bandwidths defined by the system, so that the frequency domain resource of the first cell is fully utilized, and the resource utilization rate can be improved.

With reference to the first aspect, in some implementations of the first aspect, the network device sends third information, where the third information is used for the terminal device to establish a communication connection with the first cell, and the third information includes third indication information, where the third indication information is used to indicate that a carrier frequency band of the first cell is the first carrier frequency band.

Optionally, the third information is broadcast information, for example, the third information is SIB 1. The first carrier band may be referred to as a broadcast carrier band of the first cell and the second carrier band may be referred to as a dedicated carrier band of the first terminal device.

With reference to the first aspect, in certain embodiments of the first aspect, the method further comprises: the network device sends second information to the first terminal device, the second information being used to configure the bandwidth part BWP in the second carrier band. Wherein the second information comprises first indication information indicating an offset between the start frequency point of the bandwidth portion BWP with respect to the BWP reference frequency point.

In an optional embodiment, the BWP reference frequency point is a start frequency point of the first carrier band.

According to the scheme, no matter whether the carrier frequency bands of the communication between the terminal equipment and the first cell are the same or not, the reference frequency points of the BWP configured for the terminal equipment by the network equipment are all the broadcast carrier frequency bands used after the terminal equipment is accessed, and the implementation complexity is reduced.

In another alternative embodiment, the BWP reference frequency point is the start frequency point of the second carrier band.

According to the scheme, the maximum number of the BWP configurable continuous RBs in the current system can be used, so that the resource utilization rate is improved under the condition that the modification on the existing system is reduced as much as possible.

With reference to the first aspect, in some embodiments of the first aspect, the BWP reference frequency point is a start frequency point of the first carrier band, and the second information further includes second indication information, where the second indication information is used to indicate that the start frequency point of the bandwidth portion BWP is greater than, less than or equal to the start frequency point of the first carrier band.

According to the above solution, through the second indication information in the second information, the network may configure BWP of the second carrier band containing resources greater than, less than or equal to the starting frequency point of the first carrier band, that is, the second carrier band may contain resources greater than, less than or equal to the starting frequency point of the first carrier band, thereby improving flexibility of frequency domain resource configuration.

With reference to the first aspect, in certain embodiments of the first aspect, the method further comprises: the network device communicates with a second terminal device on the first carrier frequency band, wherein a serving cell of the second terminal device is the first cell, and a carrier frequency band of the first cell communicating with the second terminal device is the first carrier frequency band.

According to the above scheme, the first cell may communicate with the first terminal device via the second carrier frequency band and communicate with the second terminal device via the first carrier frequency band. The method and the device realize that the cell communicates with different terminal devices by using a plurality of carrier bandwidths defined by the system, so that the frequency domain resource of the first cell is fully utilized, and the resource utilization rate can be improved.

In a second aspect, a resource allocation method is provided, which may be executed by a terminal device or a module (e.g. a chip) configured in (or used for) the terminal device, and the first terminal device executes the method as an example. The beneficial effects of the resource allocation method provided by the second aspect may refer to the description of the first aspect, and are not described herein again.

The method comprises the following steps: the first terminal device receives first information from the network device, where the first information is used to indicate that a carrier frequency band of a first cell is updated from a first carrier frequency band to a second carrier frequency band, the first cell is a serving cell of the first terminal device, and the second carrier frequency band includes frequency domain resources outside the first carrier frequency band. The first terminal device communicates with the first cell in the second carrier band.

With reference to the second aspect, in certain embodiments of the second aspect, the method further comprises: the first terminal device receives second information from the network device, the second information being used to configure the bandwidth part BWP in the second carrier band. The second information includes first indication information, where the first indication information is used to indicate an offset between a start frequency point of the bandwidth portion BWP and a reference frequency point of the BWP, and the BWP reference frequency point is the start frequency point of the first carrier band or the start frequency point of the second carrier band.

With reference to the second aspect, in some embodiments of the second aspect, the BWP reference frequency point is a start frequency point of the first carrier band, and the second information includes second indication information, where the second indication information is used to indicate that the start frequency point of the bandwidth portion BWP is greater than, less than or equal to the start frequency point of the first carrier band.

With reference to the second aspect, in certain embodiments of the second aspect, the method further comprises: the first terminal device sends third information, where the third information is used for the terminal device to establish a communication connection with the first cell, and the third information includes third indication information, where the third indication information is used to indicate that a carrier frequency band of the first cell is the first carrier frequency band.

In a third aspect, a resource allocation method is provided, which may be executed by a network device or a module (e.g., a chip) configured in (or used for) the network device, and the following description takes the network device to execute the method as an example.

The method comprises the following steps: the network device sends fourth information to the first terminal device, where the fourth information is used to indicate that the first terminal device communicates with the first terminal device in a carrier aggregation manner between the first cell and a second cell, a carrier band of the second cell is a third carrier band, and the second carrier band partially overlaps with the third carrier band. The network device communicates with the first terminal device on the second carrier frequency band and/or a third carrier frequency band.

According to the scheme, the network equipment realizes the full utilization of the frequency domain resources of the network equipment by adopting a carrier aggregation mode through two cells with overlapped carrier frequency bands. For example, the network device has frequency domain resources of a standard bandwidth defined by a non-communication system, and the network device communicates with the terminal device in a carrier aggregation manner through two cells in which a carrier bandwidth is the standard bandwidth and the carrier bandwidth is partially overlapped, so that the frequency domain resources of the network device can be fully utilized, and the resource utilization rate is improved.

With reference to the third aspect, in certain embodiments of the third aspect, the method further comprises: the network device sends fourth indication information to the first terminal device, where the fourth indication information is used to indicate that the second carrier frequency band of the first cell overlaps with the third carrier frequency band of the second cell.

According to the above scheme, the network device may indicate, to the first terminal device, a third carrier band of the second cell that overlaps with the second carrier band of the first cell through the fourth indication information, so that the network device may communicate with the first terminal device through the second carrier band and the third carrier band in a carrier aggregation manner, so that frequency domain resources of the network device are fully utilized, and resource utilization rate is improved.

With reference to the third aspect, in some embodiments of the third aspect, a frequency domain resource of one resource block of the first cell in an overlapping frequency band of the second carrier frequency band and the third carrier frequency band is the same as a frequency domain resource of one resource block of the second cell, and the resource block is a frequency domain resource scheduling unit of a cell.

According to the above scheme, the frequency domain resource of one resource block of the first cell in the overlapping frequency band of the second carrier frequency band and the third carrier frequency band is the same as the frequency domain resource of one resource block of the second cell, that is, the resource blocks on the second carrier frequency band are aligned with the resource blocks on the third carrier frequency band, so that the network device can schedule part or all of the frequency band resources to communicate with the first terminal device in the aggregated frequency band after carrier aggregation by using the same scheduling unit.

With reference to the third aspect, in certain embodiments of the third aspect, the method further comprises: the reference frequency point corresponding to the first cell is the same as the reference frequency point corresponding to the second cell, the reference frequency point corresponding to the first cell is used for determining the position of the resource block of the first cell, and the reference frequency point corresponding to the second cell is used for determining the position of the resource block of the second cell.

According to the scheme, the reference frequency points used for determining the resource blocks in the first cell and the second cell are the same, and the resource blocks of the first cell and the resource blocks of the second cell determined by the first terminal device based on the reference frequency points are aligned.

With reference to the third aspect, in certain embodiments of the third aspect, the method further comprises: the network device transmits a first reference signal through the first cell and the second cell, the first reference signal comprising a plurality of symbols. Wherein symbols carried in the first reference signal in an overlapping band of the second carrier band and the third carrier band are transmitted by the first cell or the second cell. Symbols of the first reference signal carried in a frequency band of the second carrier band other than the overlapping frequency band are transmitted by the first cell. Symbols of the first reference signal carried in a frequency band of the third carrier frequency band other than the overlapping frequency band are transmitted by the second cell.

According to the above scheme, the symbols of the reference signal carried in the overlapped frequency band are transmitted by the first cell or the second cell, and an optional way of transmitting the reference signal on the overlapped frequency band is defined, so that the situation that the symbols from a plurality of cells carried in the overlapped frequency band are not consistent to cause the reception error or the reception failure of the first terminal equipment can be avoided.

With reference to the third aspect, in certain embodiments of the third aspect, the method further comprises: the network device transmits a second reference signal on the first resource through the first cell. And the network equipment transmits a third reference signal on the first resource through the second cell. The first resource is a resource in an overlapping frequency band of the second carrier frequency band and the third carrier frequency band, and the initialization sequence of the second reference signal is the same as that of the third reference signal.

According to the above scheme, on the first resource in the overlapped frequency band, the initialization sequence of the second reference signal sent by the first cell is the same as the initialization sequence of the third reference signal sent by the second cell, so that the second reference signal and the third reference signal generated by the first cell and the second cell respectively in the same manner are the same. An alternative way of sending the reference signal on the overlapping frequency band is specified, which can avoid the situation that the symbols from multiple cells carried in the overlapping frequency band are not consistent to cause the receiving error or the receiving failure of the first terminal equipment.

With reference to the third aspect, in certain embodiments of the third aspect, the method further comprises: and the network equipment sends seventh information to the first terminal equipment, wherein the seventh information is used for indicating the scrambling code identification information of the second reference signal, and the scrambling code identification information of the second reference signal is used for generating an initialization sequence of the second reference signal. And the network device sends eighth information to the first terminal device, where the eighth information is used to indicate scrambling code identification information of the third reference signal, and the scrambling code identification information of the third reference signal is used to generate an initialization sequence of the third reference signal. Wherein the scrambling code identification information of the second reference signal is the same as the scrambling code identification information of the third reference signal.

According to the above scheme, the scrambling code identification information of the second reference signal and the scrambling code identification information of the third reference signal, which are indicated to the first terminal device by the network device, are the same, so that the first terminal device determines that the initialization sequence of the second reference signal is the same as the initialization sequence of the third reference signal, and thus determines that the second reference signal is the same as the third reference signal, and the terminal device may consider that the same reference signal (i.e., the fourth reference signal) is carried on the first resource, and perform joint reception and channel state information measurement.

With reference to the third aspect, in certain embodiments of the third aspect, the method further comprises: and the network equipment receives channel state information from the first terminal equipment, wherein the channel state information is corresponding to the second reference signal and the third reference signal.

According to the above scheme, the first terminal device feeds back the channel state information only once for the reference signal carried on the first resource, and does not need to feed back the channel state information to the first cell and the second cell respectively. Resource waste caused by the fact that the first terminal device reports the same channel state information for multiple times can be avoided, and resource utilization rate is improved.

With reference to the third aspect, in certain embodiments of the third aspect, the method further comprises: the network device receives ninth information from the first terminal device, the ninth information being used for indicating the capability of the first terminal device, and the ninth information includes one or more of the following indication information:

fifth indication information, configured to indicate that the first terminal device supports or does not support a carrier aggregation mode of carrier-to-frequency band overlapping of a cell;

sixth indication information, configured to indicate that the first terminal device supports or does not support a carrier aggregation mode in which carrier bands in the same frequency band overlap;

seventh indication information, configured to indicate that the first terminal device supports or does not support a carrier aggregation mode in which carrier frequency bands between different frequency bands are overlapped;

and eighth indication information, configured to indicate a frequency domain position of a carrier aggregation manner in which carrier and frequency bands overlap is supported or not supported by the first terminal device.

According to the above scheme, the terminal device may report, to the network device, the relevant capability information of whether the carrier aggregation mode with overlapping carrier and frequency bands is supported, so that the network device may determine, according to the capability of the first terminal device, whether to adopt the carrier aggregation mode with overlapping carrier and frequency bands of the cell for communication with the first terminal device, so as to improve the resource utilization rate.

With reference to the third aspect, in certain embodiments of the third aspect, a frequency domain interval between a carrier center frequency point of the first cell and a carrier center frequency point of the second cell is a common multiple of a unit interval and a first subcarrier interval of a channel grid, the channel grid is a candidate set of carrier center frequency points, an interval between two carrier center frequency points belonging to the same frequency band in the channel grid is an integer multiple of the unit interval, and the subcarrier intervals of the first cell and the second cell are both the first subcarrier interval.

According to the above scheme, since the present application provides a communication mechanism in which carrier frequency bands of multiple cells may overlap, a frequency domain interval between a carrier center frequency point of a first cell and a carrier center frequency point of a second cell is defined as a common multiple of a unit interval of a channel grid and a first subcarrier interval. The terminal equipment can search the first cell and the second cell during cell search.

With reference to the third aspect, in certain embodiments of the third aspect, the method further comprises: the network device determines the maximum transmission rate of the first terminal device according to the bandwidth of the second carrier frequency band, the bandwidth of the third carrier frequency band and a first parameter, wherein the first parameter is used for representing the influence of the overlapping frequency band of the second carrier frequency band and the third carrier frequency band on the maximum transmission rate.

According to the above scheme, since the present application provides a communication mechanism in which carrier frequency bands of multiple cells may overlap, calculating the maximum transmission rate of the terminal device needs to consider the influence of the overlapping frequency bands on the maximum transmission rate, so as to determine the data transmission rate of the terminal device more accurately.

In a fourth aspect, a resource allocation method is provided, which may be executed by a terminal device or a module (e.g. a chip) configured in (or used for) the terminal device, and the first terminal device executes the method as an example. The beneficial effects of the resource allocation method provided by the fourth aspect may refer to the description of the third aspect, and are not described herein again.

The first terminal device receives fourth information from the network device, where the fourth information is used to instruct the network device to communicate with the first terminal device in a carrier aggregation manner between the first cell and a second cell, and a second carrier band of the first cell partially overlaps with a third carrier band of the second cell. The first terminal device communicates with the network device on the second carrier band and/or a third carrier band.

With reference to the fourth aspect, in certain embodiments of the fourth aspect, the method further comprises: the first terminal device receives fourth indication information from the network device, where the fourth indication information is used to indicate that the second carrier band of the first cell partially overlaps with the third carrier band of the second cell.

With reference to the fourth aspect, in some embodiments of the fourth aspect, a frequency domain resource of one resource block of the first cell in an overlapping frequency band of the second carrier frequency band and the third carrier frequency band is the same as a frequency domain resource of one resource block of the second cell, and the resource block is a frequency domain resource scheduling unit of a cell.

With reference to the fourth aspect, in certain embodiments of the fourth aspect, the method further comprises: and the reference frequency point corresponding to the first cell is the same as the reference frequency point corresponding to the second cell. And the reference frequency point corresponding to the first cell is used for determining the position of the resource block of the first cell, and the reference frequency point corresponding to the second cell is used for determining the position of the resource block of the second cell.

With reference to the fourth aspect, in certain embodiments of the fourth aspect, the method further comprises: a first terminal device receives a first reference signal, the first reference signal comprising a plurality of symbols. Wherein symbols in the first reference signal carried within an overlapping frequency band of the second carrier frequency band and the third carrier frequency band are transmitted by the first cell or the second cell. Symbols of the first reference signal carried in a frequency band of the second carrier band other than the overlapping frequency band are transmitted by the first cell. Symbols of the first reference signal carried in a frequency band of the third carrier frequency band other than the overlapping frequency band are transmitted by the second cell.

With reference to the fourth aspect, in certain embodiments of the fourth aspect, the method further comprises: the first terminal device receives a fourth reference signal on the first resource, the fourth reference signal comprising a second reference signal from the first cell and a third reference signal of the second cell. The first resource is a resource in an overlapping frequency band of the second carrier frequency band and the third carrier frequency band, and the initialization sequence of the second reference signal is the same as that of the third reference signal.

With reference to the fourth aspect, in certain embodiments of the fourth aspect, the method further comprises: the first terminal device receives seventh information from the network device, where the seventh information is used to indicate scrambling code identification information of the second reference signal, and the scrambling code identification information of the second reference signal is used to generate an initialization sequence of the second reference signal. And the first terminal device receives eighth information from the network device, where the eighth information is used to indicate scrambling code identification information of the third reference signal, and the scrambling code identification information of the third reference signal is used to generate an initialization sequence of the third reference signal. Wherein the scrambling code identification information of the second reference signal is the same as the scrambling code identification information of the third reference signal.

With reference to the fourth aspect, in certain embodiments of the fourth aspect, the method further comprises: and the first terminal equipment obtains channel state information according to the fourth reference signal, wherein the channel state information is corresponding to the second reference signal and the third reference signal. And the first terminal equipment sends the channel state information to the network equipment.

With reference to the fourth aspect, in certain embodiments of the fourth aspect, the method further comprises: the first terminal device receives ninth information from the first terminal device, the ninth information being used for indicating the capability of the first terminal device, and the ninth information includes one or more of the following indication information:

fifth indication information, configured to indicate that the first terminal device supports or does not support a carrier aggregation mode of carrier-to-carrier frequency band overlapping of a cell;

seventh indication information, configured to indicate that the first terminal device supports or does not support a carrier aggregation mode in which carrier bands between different frequency bands overlap;

With reference to the fourth aspect, in some embodiments of the fourth aspect, a frequency domain interval between a carrier center frequency point of the first cell and a carrier center frequency point of the second cell is a common multiple of a unit interval and a first subcarrier interval of a channel grid, the channel grid is a candidate set of carrier center frequency points, an interval between two carrier center frequency points in the channel grid is an integer multiple of the unit interval, and the subcarrier intervals of the first cell and the second cell are both the first subcarrier interval.

With reference to the fourth aspect, in certain embodiments of the fourth aspect, the method further comprises: the first terminal device determines the maximum transmission rate according to the bandwidth of the second carrier frequency band, the bandwidth of the third carrier frequency band and the first parameter. Wherein the first parameter is used for characterizing the influence of the overlapping frequency band of the second carrier frequency band and the third carrier frequency band on the maximum transmission rate.

In a fifth aspect, a resource allocation method is provided, which may be executed by a network device or a module (e.g., a chip) configured in (or used for) the network device, and the network device executes the method as an example.

The method comprises the following steps: the network device sends tenth information, the tenth information is used for the first terminal device to establish communication connection with the first cell, and the tenth information is used for indicating the first carrier frequency band and the second carrier frequency band of the first cell. The network device receives eleventh information from a first terminal device, the eleventh information indicating that the first terminal device requests to establish a communication connection with the first cell, the eleventh information including ninth indication information indicating that the first terminal device supports communication with the first cell on the first carrier frequency band and/or the second carrier frequency band.

According to the scheme, the first cell can contain a plurality of carrier frequency bands, and the frequency bands with a plurality of standard bandwidths can form the frequency band with a non-standard bandwidth of the first cell, so that the utilization rate of resources is improved. The network device notifies the terminal device that the first cell includes multiple carrier frequency bands through the tenth information, and the terminal device can communicate with the first cell through the multiple carrier frequency bands, so that the utilization rate of resources can be improved, and the transmission rate of communication can be improved. The terminal equipment which does not support communication with the first cell through a plurality of carrier frequency bands or the terminal equipment can also select communication with the first cell through one carrier frequency band according to communication requirements, so that the terminal equipment can access a network as required, and the flexibility of the system is improved.

In a sixth aspect, a resource allocation method is provided, which may be executed by a terminal device or a module (e.g., a chip) configured in (or used for) the terminal device, and the first terminal device executes the method as an example.

The method comprises the following steps: the first terminal device receives tenth information from the network device, where the tenth information is used for the terminal device to establish a communication connection with the first cell, and the tenth information is used for indicating the first carrier frequency band and the second carrier frequency band of the first cell. The first terminal device transmits to the network device eleventh information for indicating that the first terminal device requests to establish a communication connection with the first cell, the eleventh information comprising ninth indication information for indicating that the first terminal device supports communication with the first cell on the first carrier frequency band and/or the second carrier frequency band.

In a seventh aspect, a communication device is provided, and in one design, the device may include a module that performs a one-to-one correspondence to the method/operation/step/action described in the first aspect, where the module may be a hardware circuit, a software circuit, or a combination of a hardware circuit and a software circuit. In one design, the apparatus includes: a processing unit, configured to determine first information, where the first information is used to indicate that a carrier frequency band of a first cell is updated from a first carrier frequency band to a second carrier frequency band, where the first cell is a serving cell of the first terminal device, and the second carrier frequency band includes frequency domain resources outside the first carrier frequency band. And the transceiving unit is used for sending the first information to the first terminal equipment. The transceiver unit is also configured to communicate with the first terminal device over the second carrier frequency band.

With reference to the seventh aspect, in some embodiments of the seventh aspect, the transceiving unit is further configured to send second information to the first terminal device, where the second information is used to configure the bandwidth part BWP in the second carrier band. The second information includes first indication information, where the first indication information is used to indicate an offset between a start frequency point of the bandwidth portion BWP and a BWP reference frequency point, and the BWP reference frequency point is the start frequency point of the first carrier band or the start frequency point of the second carrier band.

With reference to the seventh aspect, in some embodiments of the seventh aspect, the BWP reference frequency point is a start frequency point of the first carrier band, and the second information further includes second indication information, where the second indication information is used to indicate that the start frequency point of the bandwidth portion BWP is greater than, less than or equal to the start frequency point of the first carrier band.

With reference to the seventh aspect, in some embodiments of the seventh aspect, the transceiver unit is further configured to send third information, where the third information is used for a terminal device to establish a communication connection with the first cell, and the third information includes third indication information, where the third indication information is used to indicate that a carrier frequency band of the first cell is the first carrier frequency band.

With reference to the seventh aspect, in some embodiments of the seventh aspect, the transceiver unit is further configured to communicate with a second terminal device over the first carrier frequency band. The serving cell of the second terminal device is the first cell, and the carrier frequency band of the first cell communicating with the second terminal device is the first carrier frequency band.

In an eighth aspect, a communication device is provided, which in one design may include a module corresponding to one performing the method/operation/step/action described in the second aspect, where the module may be a hardware circuit, a software circuit, or a combination of a hardware circuit and a software circuit. In one design, the apparatus includes: the transceiving unit receives first information from a network device, wherein the first information is used for indicating that a carrier frequency band of a first cell is updated from a first carrier frequency band to a second carrier frequency band, the first cell is a service cell of a first terminal device, and the second carrier frequency band comprises frequency domain resources outside the first carrier frequency band. And the processing unit is used for determining to update the carrier frequency band of the first cell from the first carrier frequency band to the second carrier frequency band according to the first information. The transceiver component is also configured to communicate with the first cell in the second carrier frequency band.

With reference to the eighth aspect, in some embodiments of the eighth aspect, the transceiving unit is further configured to receive second information from the network device, the second information being used to configure the bandwidth part BWP in the second carrier band. The second information includes first indication information, where the first indication information is used to indicate an offset between a start frequency point of the bandwidth portion BWP and a reference frequency point of the BWP, and the BWP reference frequency point is the start frequency point of the first carrier band or the start frequency point of the second carrier band.

With reference to the eighth aspect, in some embodiments of the eighth aspect, the BWP reference frequency point is a start frequency point of the first carrier band, and the second information includes second indication information indicating that the start frequency point of the bandwidth portion BWP is greater than, less than or equal to the start frequency point of the first carrier band.

With reference to the eighth aspect, in some embodiments of the eighth aspect, the transceiver unit is further configured to send third information, where the third information is used for a terminal device to establish a communication connection with the first cell, and the third information includes third indication information, where the third indication information is used to indicate that a carrier frequency band of the first cell is the first carrier frequency band.

A ninth aspect provides a communication device, which in one design may include a module corresponding to one performing the method/operation/step/action described in the third aspect, where the module may be a hardware circuit, a software circuit, or a combination of a hardware circuit and a software circuit. In one design, the apparatus includes: a processing unit, configured to determine fourth information, where the fourth information is used to indicate that the first terminal device communicates with the first terminal device in a carrier aggregation manner between the first cell and a second cell, a carrier frequency band of the second cell is a third carrier frequency band, and the second carrier frequency band partially overlaps with the third carrier frequency band. And the transceiving unit is used for sending the fourth information to the first terminal equipment. The transceiving unit is further configured to communicate with the first terminal device on the second carrier frequency band and/or a third carrier frequency band.

With reference to the ninth aspect, in some embodiments of the ninth aspect, the transceiver unit is further configured to send fourth indication information to the first terminal device, where the fourth indication information indicates that the second carrier band of the first cell partially overlaps with the third carrier band of the second cell.

With reference to the ninth aspect, in some embodiments of the ninth aspect, a frequency domain resource of one resource block of the first cell in an overlapping frequency band of the second carrier frequency band and the third carrier frequency band is the same as a frequency domain resource of one resource block of the second cell, and the resource block is a frequency domain resource scheduling unit of a cell.

With reference to the ninth aspect, in some embodiments of the ninth aspect, the reference frequency point corresponding to the first cell is the same as the reference frequency point corresponding to the second cell, and the reference frequency point corresponding to the first cell is used to determine the position of the resource block of the first cell. And the reference frequency point corresponding to the second cell is used for determining the position of the resource block of the second cell.

With reference to the ninth aspect, in some embodiments of the ninth aspect, the transceiver unit is further configured to transmit a first reference signal through the first cell and the second cell, the first reference signal comprising a plurality of symbols. Wherein symbols in the first reference signal carried within an overlapping frequency band of the second carrier frequency band and the third carrier frequency band are transmitted by the first cell or the second cell. Symbols of the first reference signal carried in a frequency band of the second carrier band other than the overlapping frequency band are transmitted by the first cell. Symbols of the first reference signal carried in a frequency band of the third carrier frequency band other than the overlapping frequency band are transmitted by the second cell.

With reference to the ninth aspect, in some embodiments of the ninth aspect, the transceiver unit is further configured to transmit a second reference signal on the first resource through the first cell. And the transceiver unit is further configured to transmit a third reference signal on the first resource through the second cell. The first resource is a resource in an overlapping frequency band of the second carrier frequency band and the third carrier frequency band, and the initialization sequence of the second reference signal is the same as that of the third reference signal.

With reference to the ninth aspect, in some embodiments of the ninth aspect, the transceiver unit is further configured to transmit seventh information to the first terminal device, where the seventh information is used to indicate scrambling code identification information of the second reference signal, and the scrambling code identification information of the second reference signal is used to generate an initialization sequence of the second reference signal. And the transceiver unit is further configured to send eighth information to the first terminal device, where the eighth information is used to indicate scrambling code identification information of the third reference signal, and the scrambling code identification information of the third reference signal is used to generate an initialization sequence of the third reference signal. Wherein the scrambling code identification information of the second reference signal is the same as the scrambling code identification information of the third reference signal.

With reference to the ninth aspect, in some embodiments of the ninth aspect, the transceiver unit is further configured to receive channel state information from the first terminal device, where the channel state information is channel state information corresponding to the second reference signal and the third reference signal.

With reference to the ninth aspect, in some embodiments of the ninth aspect, the transceiving unit is further configured to receive ninth information from the first terminal device, the ninth information indicating a capability of the first terminal device, the ninth information including one or more of the following indication information:

With reference to the ninth aspect, in some embodiments of the ninth aspect, a frequency domain interval between a carrier center frequency point of the first cell and a carrier center frequency point of the second cell is a common multiple of a unit interval and a first subcarrier interval of a channel grid, the channel grid is a candidate set of carrier center frequency points, an interval between two carrier center frequency points belonging to the same frequency band in the channel grid is an integer multiple of the unit interval, and subcarrier intervals of the first cell and the second cell are both the first subcarrier interval.

With reference to the ninth aspect, in some embodiments of the ninth aspect, the processing unit is further configured to determine a maximum transmission rate of the first terminal device according to the bandwidth of the second carrier frequency band, the bandwidth of the third carrier frequency band, and a first parameter, where the first parameter is used to characterize an influence of an overlapping frequency band of the second carrier frequency band and the third carrier frequency band on the maximum transmission rate.

A tenth aspect provides a communication apparatus, which in one design may include a module that performs the one-to-one correspondence of the method/operation/step/action described in the fourth aspect, where the module may be a hardware circuit, a software circuit, or a combination of a hardware circuit and a software circuit. In one design, the apparatus includes: a transceiver unit, configured to receive fourth information from the network device, where the fourth information is used to instruct the network device to communicate with the first terminal device in a carrier aggregation manner between the first cell and a second cell, and a second carrier band of the first cell partially overlaps with a third carrier band of the second cell. And the processing unit is used for determining that the network equipment communicates with the first terminal equipment in a carrier aggregation mode of the first cell and the second cell according to the fourth information. The transceiving unit is further configured to communicate with the network device on the second carrier frequency band and/or a third carrier frequency band.

With reference to the tenth aspect, in some embodiments of the tenth aspect, the transceiver unit is further configured to receive fourth indication information from the network device, the fourth indication information indicating that the second carrier band of the first cell partially overlaps with the third carrier band of the second cell.

With reference to the tenth aspect, in some embodiments of the tenth aspect, a frequency domain resource of one resource block of the first cell in an overlapping frequency band of the second carrier frequency band and the third carrier frequency band is the same as a frequency domain resource of one resource block of the second cell, and the resource block is a frequency domain resource scheduling unit of a cell.

With reference to the tenth aspect, in some embodiments of the tenth aspect, the reference frequency point corresponding to the first cell is the same as the reference frequency point corresponding to the second cell, and the reference frequency point corresponding to the first cell is used to determine the location of the resource block of the first cell. And the reference frequency point corresponding to the second cell is used for determining the position of the resource block of the second cell.

With reference to the tenth aspect, in some embodiments of the tenth aspect, the transceiver unit is further configured to receive a first reference signal, the first reference signal comprising a plurality of symbols. Wherein symbols in the first reference signal carried within an overlapping frequency band of the second carrier frequency band and the third carrier frequency band are transmitted by the first cell or the second cell. Symbols of the first reference signal carried in a frequency band of the second carrier band other than the overlapping frequency band are transmitted by the first cell. Symbols of the first reference signal carried in a frequency band of the third carrier frequency band other than the overlapping frequency band are transmitted by the second cell.

With reference to the tenth aspect, in some embodiments of the tenth aspect, the transceiver unit is further configured to receive a fourth reference signal on the first resource, the fourth reference signal comprising a second reference signal from the first cell and a third reference signal of the second cell. The first resource is a resource in an overlapping frequency band of the second carrier frequency band and the third carrier frequency band, and the initialization sequence of the second reference signal is the same as that of the third reference signal.

With reference to the tenth aspect, in some embodiments of the tenth aspect, the transceiver unit is further configured to receive seventh information from the network device, where the seventh information is used to indicate scrambling code identification information of the second reference signal, and the scrambling code identification information of the second reference signal is used to generate an initialization sequence of the second reference signal. And the transceiver unit is further configured to receive eighth information from the network device, where the eighth information is used to indicate scrambling code identification information of the third reference signal, and the scrambling code identification information of the third reference signal is used to generate an initialization sequence of the third reference signal. Wherein the scrambling code identification information of the second reference signal is the same as the scrambling code identification information of the third reference signal.

With reference to the tenth aspect, in some embodiments of the tenth aspect, the processing unit is further configured to obtain channel state information according to the fourth reference signal, where the channel state information is channel state information corresponding to the second reference signal and the third reference signal. The transceiving unit is further configured to send the channel state information to the network device.

With reference to the tenth aspect, in some embodiments of the tenth aspect, the transceiver unit is further configured to receive ninth information from the first terminal device, where the ninth information is used to indicate the capability of the first terminal device, and the ninth information includes one or more of the following indication information:

With reference to the tenth aspect, in some embodiments of the tenth aspect, a frequency domain interval between a carrier center frequency point of the first cell and a carrier center frequency point of the second cell is a common multiple of a unit interval and a first subcarrier interval of a channel grid, the channel grid is a candidate set of carrier center frequency points, an interval between two carrier center frequency points belonging to the same frequency band in the channel grid is an integer multiple of the unit interval, and subcarrier intervals of the first cell and the second cell are both the first subcarrier interval.

With reference to the tenth aspect, in some embodiments of the tenth aspect, the processing unit is further configured to determine a maximum transmission rate according to the bandwidth of the second carrier frequency band, the bandwidth of the third carrier frequency band, and a first parameter, where the first parameter is used to characterize an influence of an overlapping frequency band of the second carrier frequency band and the third carrier frequency band on the maximum transmission rate.

In an eleventh aspect, a communication device is provided, and in a design, the device may include a module corresponding to one to perform the method/operation/step/action described in the fifth aspect, where the module may be a hardware circuit, a software circuit, or a combination of a hardware circuit and a software circuit. In one design, the apparatus includes: and the transceiving unit is used for sending tenth information, the tenth information is used for establishing communication connection between the first terminal equipment and the first cell, and the tenth information is used for indicating the first carrier frequency band and the second carrier frequency band of the first cell. The transceiving unit is further configured to receive eleventh information from a first terminal device, where the eleventh information is used to indicate that the first terminal device requests to establish a communication connection with the first cell, and the eleventh information includes ninth indication information, where the ninth indication information is used to indicate that the first terminal device supports communication with the first cell on the first carrier frequency band and/or the second carrier frequency band. And the processing unit is used for determining that the first terminal equipment requests to establish communication connection with the first cell according to the eleventh information and determining a carrier frequency band supported by the first terminal equipment and used for communicating with the first cell.

In a twelfth aspect, a communication device is provided, which in one design may include a module that performs the one-to-one correspondence of the method/operation/step/action described in the sixth aspect, where the module may be a hardware circuit, a software circuit, or a combination of a hardware circuit and a software circuit. In one design, the apparatus includes: and the transceiving unit is used for receiving tenth information from the network equipment, the tenth information is used for the terminal equipment to establish communication connection with the first cell, and the tenth information is used for indicating the first carrier frequency band and the second carrier frequency band of the first cell. The processing unit is used for determining to establish communication connection with a first cell and determining a supported carrier frequency band for communication with the first cell. The transceiving unit sends eleventh information to the network device, the eleventh information being used for indicating that a first terminal device requests to establish a communication connection with the first cell, the eleventh information comprising ninth indication information, the ninth indication information being used for indicating that the first terminal device supports communication with the first cell on the first carrier frequency band and/or the second carrier frequency band.

In a thirteenth aspect, a communication apparatus is provided that includes a processor. The processor may implement the method in any of the possible implementations of the first, third or fifth aspect and the first, third or fifth aspect described above. Optionally, the communication device further includes a memory, and the processor is coupled to the memory and configured to execute instructions in the memory to implement the method in any possible implementation manner of the first, third, or fifth aspect and the first, third, or fifth aspect. Optionally, the communication device further comprises a communication interface, the processor being coupled to the communication interface. In the present disclosure, the communication interface may be a transceiver, pin, circuit, bus, module, or other type of communication interface, but the application is not limited thereto.

According to the communication apparatus provided in the thirteenth aspect, in an implementation, when the communication apparatus is a network device, the communication interface may be a transceiver. Alternatively, the transceiver may be a transmit-receive circuit. In another implementation, when the communication device is a chip configured on the network device, the communication interface may be an input/output interface.

In a fourteenth aspect, a communications apparatus is provided that includes a processor. The processor may implement the method of the second, fourth or sixth aspect described above and any one of the possible implementations of the second, fourth or sixth aspect. Optionally, the communication device further comprises a memory, and the processor is coupled to the memory and operable to execute the instructions in the memory to implement the method in the second, fourth or sixth aspect and any possible implementation manner of the second, fourth or sixth aspect. Optionally, the communication device further comprises a communication interface, the processor being coupled to the communication interface.

According to the communication apparatus provided in the fourteenth aspect, in one implementation, when the communication apparatus is a terminal device, the communication interface may be a transceiver. Alternatively, the transceiver may be a transmit-receive circuit. In another implementation, when the communication device is a chip configured in the terminal equipment, the communication interface may be an input/output interface.

Alternatively, the input/output interface may include an input circuit and an output circuit. In a specific implementation process, the input circuit may be an input pin, the output circuit may be an output pin, and the processor may be a transistor, a gate circuit, a flip-flop, various logic circuits, and the like. The input signal received by the input circuit may be received and input by, for example and without limitation, a receiver, the signal output by the output circuit may be output to and transmitted by a transmitter, for example and without limitation, and the input circuit and the output circuit may be the same circuit that functions as the input circuit and the output circuit, respectively, at different times. The present disclosure is not limited to specific implementations of processors and various circuits.

In a fifteenth aspect, a computer program product is provided, the computer program product comprising: a computer program (which may also be referred to as code, or instructions), which when executed, causes a computer to perform the method of any one of the possible implementations of the first to sixth aspects and of the first to sixth aspects.

A sixteenth aspect provides a computer-readable storage medium storing a computer program (which may also be referred to as code or instructions) which, when executed on a computer, causes the computer to perform the method of any one of the possible implementations of the first to sixth aspects and the first to sixth aspects.

In a seventeenth aspect, a communication system is provided, which includes at least one of the foregoing apparatuses for implementing the method of the terminal device and at least one of the apparatuses for implementing the method of the network device.

Drawings

FIG. 1 is a schematic diagram of a communication system suitable for use with embodiments of the present application;

fig. 2 is a schematic flow chart of the terminal device accessing the network provided by the present application;

FIG. 3 is a schematic flow chart diagram of a resource allocation method provided herein;

fig. 4 to 6 are schematic diagrams of frequency domain resources of a first cell provided in the present application;

fig. 7 to 9 are schematic diagrams of BWPs in the second carrier band provided in the present application;

FIG. 10 is another schematic flow chart diagram of a resource allocation method provided herein;

fig. 11 is a schematic diagram of a carrier aggregation frequency band provided herein;

FIG. 12 is another schematic flow chart diagram of a resource allocation method provided herein;

FIG. 13 is another schematic flow chart diagram of a resource allocation method provided herein;

FIG. 14 is another schematic flow chart diagram of a resource allocation method provided herein;

fig. 15 is a schematic block diagram of an example of a communication apparatus according to an embodiment of the present application;

fig. 16 is a schematic structural diagram of an example of a terminal device provided in an embodiment of the present application;

fig. 17 is a schematic structural diagram of an example of a network device according to an embodiment of the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, a fifth generation (5th generation, 5G) communication system, such as a 5G New Radio (NR) system, a future communication system (such as a sixth generation (6th generation, 6G) communication system), or a system in which multiple communication systems are integrated, which is not limited in the embodiment of the present application.

Fig. 1 is a schematic diagram of a communication system 100 suitable for use with embodiments of the present application. The communication system 100 may include at least one network device, such as the network device 101 shown in fig. 1. The communication system 100 may further comprise at least one terminal device, such as the terminal device 102, the terminal device 103, and the terminal device 104 shown in fig. 1. Network device 101 may communicate with terminal device 102, terminal device 103, and terminal device 104, respectively, using radio resources to provide network services for the terminal devices. Network device 101 may manage one or more cells, such as

cells

105, 106 shown in fig. 1, with different cells having different coverage and/or frequency domain resources (e.g., carriers or carrier bands). Network device 101 may communicate with terminal device 102 using radio transmission resources of cell 105 and with terminal device 103 located in cell 106 using transmission resources of cell 106. And the network device may also communicate with the terminal device in a carrier aggregation manner, for example, the terminal device 104 is in the coverage of the

cells

105 and 106, and the network device 101 may communicate with the terminal device 104 in a Carrier Aggregation (CA) manner through the

cells

105 and 106. It should be noted that fig. 1 is only one example of a communication system to which the embodiments of the present application are applicable, and the present application is not limited thereto. As the coverage areas of the two cells shown in fig. 1 are partially overlapped, the coverage areas of the two cells may also be the coverage area of one cell may include the coverage area of the other cell.

The terminal device related to the embodiment of the application can also be called a terminal. The terminal may be a device having a wireless transceiving function. The terminal may be deployed on land, including indoors, outdoors, hand-held, and/or in-vehicle; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). The terminal device may be a User Equipment (UE). The UE includes a handheld device, an in-vehicle device, a wearable device, or a computing device with wireless communication capabilities. Illustratively, the UE may be a mobile phone (mobile phone), a tablet computer, or a computer with wireless transceiving function. The terminal device may also be a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in telemedicine, a wireless terminal in smart grid, a wireless terminal in smart city (smart city), and/or a wireless terminal in smart home (smart home), and so on.

The network device related to the embodiment of the present application includes a Base Station (BS), which may be a device deployed in a radio access network and capable of performing wireless communication with a terminal device. The base station may have various forms, such as a macro base station, a micro base station, a relay station, or an access point. The base station related to the embodiment of the present application may be a base station in a 5G system, a base station in an LTE system, or a base station in another system, which is not limited. Herein, a base station in the 5G system may also be referred to as a Transmission Reception Point (TRP) or a next generation Node B (generation Node B, gNB or gnnodeb). The base station may be an integrated base station, or may be a base station separated into multiple network elements, which is not limited. For example, a base station is a Centralized Unit (CU) and a Distributed Unit (DU) separated base station, that is, the base station includes the CU and the DU.

In the embodiments of the present application, "/" may indicate a relationship in which the objects associated before and after are "or", for example, a/B may indicate a or B; "and/or" may be used to describe that there are three relationships for the associated object, e.g., A and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. For convenience in describing the technical solutions of the embodiments of the present application, in the embodiments of the present application, terms such as "first" and "second" may be used to distinguish technical features having the same or similar functions. The terms "first", "second", and the like do not necessarily limit the number and execution order, and the terms "first", "second", and the like do not necessarily differ. In the embodiments of the present application, the words "exemplary" or "such as" are used to indicate examples, illustrations or illustrations, and any embodiment or design described as "exemplary" or "e.g.," should not be construed as preferred or advantageous over other embodiments or designs. The use of the terms "exemplary" or "such as" are intended to present relevant concepts in a concrete fashion for ease of understanding.

In the embodiments of the present application, at least one (kind) may also be described as one (kind) or more (kinds), and a plurality (kind) may be two (kind), three (kind), four (kind) or more (kind), which is not limited in the present application.

For a better understanding of the embodiments of the present application, the techniques and terminology referred to herein are briefly described below.

One, cell and carrier

A cell may be understood as a coverage area of a radio signal identified by a network equipment identity or a global cell identity. A cell is a unit that manages wireless communication resources from a resource management perspective, and a physical layer resource of the cell includes at least one carrier, which is a carrier used to carry wireless signals from a physical layer perspective, and the wireless signals may include one or more of control information, traffic data, and reference signals. The carrier wave occupies a certain frequency domain resource and is represented by the carrier wave frequency point and the bandwidth of the carrier wave frequency band. At least one carrier of a cell at least comprises a downlink carrier, and the downlink carrier is used for carrying a wireless signal sent by a network to a terminal. One or more uplink carriers may also be included in at least one carrier of one cell, and the uplink carriers are used for carrying wireless signals sent by the terminal to the network. According to different duplexing modes, for example, when a cell adopts a Frequency Division Duplexing (FDD) mode, a downlink carrier and an uplink carrier of a cell may be different. The Time Division Duplex (TDD) mode is used in a cell, and a downlink carrier and an uplink carrier of one cell may be the same.

Two, carrier aggregation

In a non-carrier aggregation scenario, a terminal device may establish a communication connection with a cell, and the cell provides a network service for the terminal device, and the cell may be referred to as a serving cell (serving cell) of the terminal device.

In a Carrier Aggregation (CA) scenario, a terminal device may establish communication connections with multiple cells. A cell initially accessed by the terminal device is called a primary cell (PCell), and is used for establishing Radio Resource Control (RRC) connection between the terminal device and the network. The network may configure a secondary cell (SCell) for the terminal device according to a transmission requirement of the terminal device, so as to provide more uplink transmission resources and/or downlink transmission resources for the terminal device. The secondary cell may be configured through RRC signaling of the primary cell, and may be activated or deactivated through a Media Access Control (MAC) Control Element (CE) or a Downlink Control Information (DCI).

Three, initial access

Fig. 2 is a schematic flow chart of the terminal device accessing the network provided by the present application.

1. The terminal device sweeps a frequency to acquire a synchronization signal and a Physical Broadcast Channel (PBCH) block (SSB).

The SSB includes a synchronization signal and a PBCH, and the PBCH carries a Master Information Block (MIB).

2. And the terminal equipment reads the configuration information of the control resource set and the configuration information of the subcarrier offset from the MIB.

The control resource set configuration information may be referred to as pdcch-Config SIB1-controlResourceSetZero for configuring a resource location of control resource set (CORESET) 0. The subcarrier offset configuration information may be referred to as SSB-subcarrieronoffset, and is used to configure a subcarrier offset, which is a frequency domain offset from a lowest subcarrier of the SSB to a Reference position (Reference Location).

The terminal device may determine the reference position based on the subcarrier offset. The CORESET 0 is configured to carry Downlink Control Information (DCI), where the DCI is used to indicate a frequency domain resource carrying a System Information Block (SIB) 1, and a terminal device may receive the SIB1 on the frequency domain resource.

3. The terminal device receives SIB1, and SIB1 includes reference point offset information, carrier offset information, and carrier band bandwidth information and initial bandwidth part (BWP) configuration information.

The reference Point offset information is used to configure a reference Point offset, where the reference Point offset is a frequency domain offset between a reference Point a (Point a) and a reference position, where Point a is a physical frequency Point and is a reference Point provided by a network for a terminal device and used to determine an initial frequency Point of a downlink carrier frequency band of a cell. The terminal device may determine Point a according to the reference frequency Point offset and the reference position in step 4 as follows. The carrier offset information may be referred to as an offset tocarrier, and is used to configure a carrier offset, which is a frequency domain offset between a start frequency Point of a carrier band and Point a. The carrier band bandwidth information may be written as carrierBandwidth and is used to configure the bandwidth of the carrier band. The initial BWP configuration information may be referred to as locationAndBandwidth to indicate the frequency domain location of the initial BWP in the carrier band.

4. And the terminal equipment determines the frequency domain position of the Point A according to the reference Point offset and the reference position.

After the terminal device determines Point a, it may determine that Point a is an initial frequency Point of a Common Resource Block (CRB), that is, an initial frequency Point of a CRB (denoted as CRB0) with a number of 0.

5. The terminal equipment determines the initial frequency Point of the carrier frequency band according to the Point A and the carrier offset, and determines the position of the carrier frequency band based on the initial frequency Point of the carrier frequency band and the bandwidth of the carrier frequency band.

The unit of the carrier offset may be CRB, and the carrier offset information may indicate the number of CRBs at which the start frequency Point of the carrier band is offset from Point a. The terminal device may specifically determine the starting frequency Point of the carrier frequency band according to the Point a and the number of CRBs indicated by the carrier offset information.

6. The terminal device determines the frequency domain position of the initial BWP in the carrier according to the initial BWP configuration information.

At this point, the terminal device obtains the frequency domain position of the carrier frequency band of the cell and the frequency domain position of the initial BWP.

7. The terminal device may establish a communication connection with the network by using the resources of the initial BWP.

The terminal device transmits random access information to the network device by using the resource of the initial BWP, thereby accessing the network to establish a communication connection with the network.

Frequency Range (FR) and frequency band

Two frequency spectrums FR1 and FR2 are defined in the current mobile communication system, FR1 is 450MHz-6000MHz, generally called sub 6GHz frequency spectrum, FR2 is 24250MHz-52600MHz, called millimeter wave frequency spectrum. The FR1 spectrum and the FR2 spectrum are respectively divided into a plurality of frequency bands and numbered. For example, in the FR1 spectrum, the uplink frequency band numbered n1 includes frequency domain resources from 1920MHz to 1980MHz, and the downlink frequency band numbered n1 includes frequency domain resources from 2110MHz to 2170 MHz. The uplink frequency band and the downlink frequency band with the number of n78 both comprise frequency domain resources of 3300MHz-3800 MHz. For another example, the uplink frequency band and the downlink frequency band numbered as n257 in the FR2 spectrum both include frequency domain resources from 26500MHz to 29500 MHz. But the application is not limited thereto.

Carrier bandwidth

The network device may select a portion of the frequency band in the system-defined frequency band as the carrier band for the cell managed by the network device. The bandwidth of the carrier band that the communication device can select (referred to as the carrier bandwidth) is different for different frequency ranges. Table 1 shows selectable carrier bandwidths corresponding to different sub-carrier spacing (SCS) in FR1, where the carrier bandwidth is represented by the number of Resource Blocks (RBs). As shown in table 1, in FR1, the maximum carrier bandwidth that can be used by the communication device is 50MHz when the SCS is 15kHz, and 100MHz when the SCS is 30kHz or 60 kHz.

TABLE 1

Table 2 shows the selectable carrier bandwidths for different SCS's in FR 2. As shown in table 2, in FR2, the maximum carrier bandwidth that can be used by the communication device is 200MHz when the SCS is 60kHz, and 400MHz when the SCS is 120 kHz.

TABLE 2

Fig. 3 is a schematic flow chart of a resource allocation method 300 according to an embodiment of the present application. In the resource allocation method 300 shown in fig. 3, the bandwidth of the frequency domain resource allocated by the network device for the first cell is a non-standard bandwidth, that is, the bandwidth of the frequency domain resource of the first cell does not belong to the system selectable carrier bandwidth shown in table 1 or table 2. The network device may configure different standard carrier frequency bands for the terminal device that establishes a communication connection with the first cell, where the bandwidths of the different carrier frequency bands are bandwidths shown in table 1 or table 2, and the first cell and the terminal device may communicate on the different carrier frequency bands, so that the frequency domain resource of the first cell may be fully utilized, and the resource utilization rate may be improved, where the method includes, but is not limited to the following steps:

s301, a network device sends first information to a first terminal device, where the first information is used to indicate that a carrier frequency band of a first cell is updated from a first carrier frequency band to a second carrier frequency band, the first cell is a serving cell of the first terminal device, and the second carrier frequency band includes frequency domain resources other than the first carrier frequency band.

Accordingly, the first terminal device receives the first information from the network device, and determines that the carrier frequency band of the first cell is updated from the first carrier frequency band to the second carrier frequency band according to the first information. The first information may be carried in an RRC message, but the application is not limited thereto.

For example, the frequency domain resource of the first cell may be as shown in fig. 4, where the frequency domain resource bandwidth of the first cell is 110MHz and is a non-standard bandwidth, the network device may divide two frequency domain bandwidths belonging to the standard bandwidth within the frequency domain resource of the first cell, for example, both the two frequency domain bandwidths are 100MHz, where the first carrier frequency band may be a 100MHz frequency band starting from a start frequency of the frequency domain resource of the first cell, and the second carrier frequency band may be a 100MHz frequency band before an end frequency of the frequency domain resource of the first cell. The first carrier frequency band is partially overlapped with the second carrier frequency band and comprises 90MHz overlapped resources, the first carrier frequency band comprises 10MHz frequency domain resources except the second carrier frequency band, and the second carrier frequency band comprises 10MHz frequency domain resources except the first carrier frequency band. The first cell can communicate with part of terminal equipment in the first carrier frequency band and communicate with part of terminal equipment in the second carrier frequency band, so that the terminal equipment communicating with the first cell in the first carrier frequency band and the terminal equipment communicating with the first cell in the second carrier frequency band can both use frequency domain resources with a bandwidth of 100MHz, and the frequency domain resources of the first cell are fully utilized while the terminal equipment is provided with the sufficient frequency domain resources. The network device may update the carrier frequency band of the terminal device communicating with the first cell from one carrier frequency band to another carrier frequency band according to a load situation in the carrier frequency band, for example, the carrier frequency band of the terminal device 1 communicating with the first cell is the first carrier frequency band, and the network device may transmit first information to the terminal device 1, which indicates to update the carrier frequency band of the first cell from the first carrier frequency band (i.e., one example of the first carrier frequency band) to the second carrier frequency band (i.e., one example of the second carrier frequency band).

Note that the second carrier band includes frequency domain resources other than the first carrier band, fig. 4 is only an example of the first carrier band and the second carrier band, and in fig. 4, the first carrier band and the second carrier band overlap with each other. For example, as shown in fig. 5, the first carrier frequency band and the second carrier frequency band are two consecutive frequency resources of the first cell, and each frequency resource includes different frequency resources of the first cell. As another example, shown in fig. 6, the frequency domain resources of the first cell may include carrier band 1, carrier band 2, and carrier band 3, and the first carrier band and the second carrier band may be 2 carrier bands of the 3 carrier bands. For example, the first carrier band may be carrier band 1 and the second carrier band may be carrier band 2, i.e., the first carrier band may be neither overlapping nor contiguous with the second carrier band.

Optionally, the network device sends third information, where the third information is used for the terminal device to establish a communication connection with the first cell, and the third information includes third indication information, where the third indication information is used to indicate that a carrier frequency band of the first cell is the first carrier frequency band.

The third information is broadcast information, for example, the third information is SIB 1. The first carrier band may be referred to as a broadcast carrier band of the first cell. And the second carrier band may be configured by a terminal-Specific (UE-Specific) RRC message sent by the network device to the terminal device, and thus, the second carrier band may be referred to as a Specific carrier band of the first terminal device, but the application is not limited thereto.

It should be understood that the network device may update the broadcast carrier frequency band of the first cell to the dedicated carrier frequency band through the first information after the first terminal device accesses the first cell, but the application is not limited thereto, and the network device may also notify the first terminal device to update the carrier frequency band of the first cell from the dedicated carrier frequency band to the broadcast carrier frequency band, or from one dedicated carrier frequency band to another dedicated carrier frequency band.

The network device may indicate, through the third indication information, that the carrier frequency band of the first cell is the first carrier frequency band, and after the first terminal device accesses the first cell, the network device may communicate with the terminal device in the first carrier frequency band of the first cell according to a requirement, or notify, through the first information, the terminal device to update the carrier frequency band of the first cell to the second carrier frequency band. If the serving cells of the first terminal device and the second terminal device are both the first cell, the first terminal device communicates with the first cell on the frequency domain resource of the second carrier frequency band after receiving the first information, and if the second terminal device does not receive the first information after accessing the first cell, the first cell communicates with the second terminal device on the first carrier frequency band, that is, the carrier frequency band of the communication between the first cell and the second terminal device is the first carrier frequency band. That is to say, the first cell provides a communication service for the second terminal device in the first carrier frequency band, the first cell provides a communication service for the first terminal device in the second carrier frequency band, and the first cell can also communicate with other terminal devices in the first carrier frequency band, the second carrier frequency band, or other carrier frequency bands.

S302, the network device communicates with the first terminal device over the second carrier frequency band through the first cell.

After the first terminal device receives the first information, the first terminal device communicates with the first cell on the second carrier frequency band. It should be noted that, in the embodiment of the present application, a cell (e.g., a first cell or a second cell) communicates with a terminal device, which may be understood as that a network device communicates with the terminal device through the cell, that is, the network device communicates with the terminal device by using resources (e.g., frequency domain resources, cell identification information, etc.) of the cell.

Alternatively, the network device may configure the first terminal device with one or more BWPs within the second carrier band and communicate with the first terminal device through the first cell, particularly on the activated BWPs.

The network device may send, to the first terminal device, second information used to configure the BWP in the second carrier band, where the second information includes first indication information used to indicate an offset between a start frequency point of the BWP and a reference frequency point of the BWP.

In a first embodiment, the BWP reference bin is the start bin of the first carrier band.

That is, the network device may configure the start frequency point of the broadcast carrier band (first carrier band) as the BWP reference frequency point for the terminal device serving the first cell to communicate with the first cell. Therefore, no matter whether the carrier frequency bands of communication between different terminal devices and the first cell are the same or not, the reference frequency points of BWP configuration for the terminal devices by the network device are all broadcast carrier frequency bands used after the terminal devices are accessed, and the implementation complexity is reduced.

In one example, the first carrier band, the second carrier band, and the BWP that the network device configures for the first terminal device are shown in fig. 7. The network device sends second information to the first terminal device, and configures the BWP in the second carrier band for the first terminal device through the second information. The first indication information in the second information indicates the start frequency point f of the BWP_bwpInitial frequency f of first carrier frequency band₁After receiving the second information, the first terminal device indicates offset 1 and the start frequency point f of the first carrier frequency band according to the first indication information₁And determining the starting frequency point of the BWP. The second information may further include indication information indicating a frequency domain duration of the BWP, so that the first terminal device determines a position of the BWP in the second carrier band according to the start frequency point and the frequency domain duration of the BWP.

In this example, the system may specify that the start frequency point of the broadcast carrier frequency band (i.e., the first carrier frequency band) is the start frequency point of the frequency domain resource of the first cell, and the start frequency point of the dedicated carrier frequency band is greater than or equal to the start frequency point of the broadcast carrier frequency band, then the network device and the terminal device may default to the start frequency point f of the BWP_bwpInitial frequency f greater than or equal to first carrier frequency band₁. The first terminal equipment superposes the initial frequency point f of the first carrier frequency band after receiving the second information₁Obtaining BWP starting frequency point f from offset 1_bwp. The first terminal device determines the frequency domain position of the BWP according to the frequency domain duration of the BWP.

In another example, the second information further includes second indication information indicating that the starting frequency point of the BWP is greater than, less than or equal to the starting frequency point of the first carrier band.

As shown in fig. 8, the start frequency point of the broadcast carrier band of the first cell (i.e., the first carrier band) may not be the start frequency point of the frequency domain resources of the first cell. The network equipment indicates the starting frequency point f of the first carrier frequency band through the first indication information in the second information₁Initial frequency point f with BWP_bwpAn offset 2 therebetween, and f is indicated by second indication information in the second information_bwpIs less than f₁After the first terminal equipment receives the second information, the offset 2 is determined according to the first indication information, and the f is determined according to the second indication information_bwpIs less than f₁Then the first terminal device may determine the start frequency point f of BWP_bwpIs f₁Offset 2 is subtracted. The first terminal device determines the frequency domain position of the BWP according to the frequency domain duration of the BWP.

For example, the second indication information may include 1 bit, and when the 1 bit indicates "0", it indicates f_bwpIs less than f₁(ii) a When the 1 bit indicates "1", f is represented_bwpGreater than f₁. Alternatively, the second indication information may include 1 bit, and when the 1 bit indicates "1", it indicates f_bwpIs less than f₁(ii) a When the 1 bit indicates "0", f is indicated_bwpGreater than f₁. When the offset indicated by the first indication information is 0, the second indication information indicates either "0" or "1", and both of them may indicate f_bwpIs equal to f₁。

For another example, the second indication information may include 2 bits, and when the 2 bits indicate "00", f is represented_bwpIs equal to f₁(ii) a When the 2 bit indicates "01", f is indicated_bwpIs less than f₁(ii) a When the 2 bit indicates "10", f is indicated_bwpGreater than f₁. However, the present application is not limited thereto, and the 2 bits indicate status values of "00", "01", "10", "11", and f_bwpAnd f₁The correspondence between the sizes of (a) and (b) may be determined according to the implementation.

Optionally, the RBs of the first carrier band are aligned with the resource blocks RBs of the second carrier band, one RB of the first carrier band being the same frequency domain resource as one RB of the second carrier band. The RB is a frequency domain resource scheduling unit of the cell, and the network device may schedule one or more RBs for carrying data of the first terminal device.

The starting position of the one RB of the first carrier band is the starting position of the one RB of the second carrier band, and the frequency domain duration of the RB of the first carrier band is the same as the frequency domain duration of the second carrier band such that the RB of the first carrier band is aligned with the RB of the second carrier band.

In the above embodiment, the first indication information may indicate f by indicating the number of RBs_bwpAnd f₁So that the first terminal device can determine f according to the number of RBs and the frequency domain duration of each RB_bwpAnd f₁The offset between. For example, the number of RBs indicated by the first indication information is 50, and the first terminal device may determine f after receiving the first indication information_bwpRelative to f₁Offset by 50 RBs, the first terminal equipment can be spaced by a subcarrier_scsAnd the number of subcarriers N contained per RB_scs/RBAnd RB number N_RBDetermining f_bwpAnd f₁Offset amount Δ f therebetween_bwp，

△f_bwp＝△f_scs×N_scs/RB×N_RB，

The first terminal device may determine f_bwpIf f is_bwpGreater than f₁Then f is_bwp＝f₁+△f_bwp(ii) a If f_bwpGreater than f₁Then f is_bwp＝f₁-△f_bwp。

The indication information indicating the frequency domain persistence length of BWP in the second information may indicate the number of persistent RBs of BWP. The maximum number of BWP configurable persistent RBs in current systems is 275. Since the second carrier band includes resources outside of the first carrier band, the maximum number of BWP configurable persistent RBs may be increased to 550 (i.e., 275 × 2) RBs so that the network device may indicate any RBs within the second carrier band, improving resource utilization. However, the present application is not limited thereto, and the maximum number of BWP configurable persistent RBs may have other values.

In the second embodiment, the BWP reference bin is the start bin of the second carrier band.

The network device uses the start frequency point of the proprietary carrier frequency band (i.e. the second carrier frequency band) of the first terminal device as the BWP reference frequency point to configure the BWP in the second carrier frequency band for the first terminal device.

For example, the resource location of BWP in the second carrier band segment is as shown in fig. 9, the network device configures the BWP for the first terminal device through the second information, where the first indication information in the second information is used to indicate the start frequency point f of the BWP_bwpStarting frequency f of second carrier frequency band₂According to offset 3 and f₂The frequency domain position of the BWP may be determined. The BWP is in the second carrier frequency band, the starting frequency f of BWP_bwpInitial frequency point f larger than second carrier frequency band₂First terminal device overlay f₂F can be obtained from the offset 3_bwp. Therefore, in this embodiment, there is no need to indicate f in the second information_bwpAnd f₂The embodiment may continue to use the maximum number 275 of the persistent RBs configurable by BWP in the current system, and need not modify the maximum number of RBs configurable by the current system, so as to improve the resource utilization rate while reducing modifications to the existing system as much as possible.

According to the scheme of the embodiment of the application, under the condition that the carrier bandwidth defined by the system is used for communicating with the terminal equipment, the frequency domain resource of the first cell can be fully utilized, and the utilization rate of the resource is improved.

In the foregoing, a manner is introduced that the network device can notify the terminal device to update the carrier frequency band of the serving cell, so that the network device can configure the terminal device served by the same cell in different carrier frequency band resources for communication, thereby achieving sufficient utilization of frequency domain resources of the cell and improving resource utilization rate. In the resource allocation method provided by the embodiment of the present application, the network device may implement full utilization of frequency domain resources of non-standard bandwidth of the network device by using a carrier aggregation manner in two cells in which the carrier bandwidth is a standard bandwidth and the carrier bandwidth is partially overlapped. A resource allocation method 1000 provided in the embodiment of the present application is described below with reference to fig. 10. It is to be understood that, in the various embodiments of the present application, unless otherwise specified or conflicting with respect to a particular description, the terms and/or descriptions in different embodiments are consistent and may be mutually referenced, and technical features in different embodiments may be mutually referenced and combined to form a new embodiment according to their inherent logical relationship.

The resource allocation method 1000 includes, but is not limited to, the following steps:

s1001, a network device sends fourth information to a first terminal device, where the fourth information is used to indicate that the first terminal device communicates with a first cell in a carrier aggregation manner with a second cell, a carrier band of the first cell is a first carrier band, a carrier band of the second cell is a third carrier band, and the second carrier band overlaps with the third carrier band.

Correspondingly, the first terminal device receives the fourth information from the network device, and determines that the network device communicates with the first terminal device in a carrier aggregation mode of the first cell and the second cell according to the fourth information.

The first terminal device may establish a communication connection with the network through a first cell, where the first cell is a serving cell of the first terminal device. The carrier bandwidth of the first terminal device communicating with the first cell is a second carrier bandwidth, and the second carrier bandwidth is a standard bandwidth defined by the communication system. The network device may indicate, through the fourth information, a manner of carrier aggregation between the first cell and the second cell and the first terminal device, where a carrier bandwidth of the second cell (that is, a bandwidth of the third carrier band) is a standard bandwidth, so that the network device realizes that the aggregated carrier band is a frequency domain resource of a non-standard bandwidth of the network device in a manner of carrier aggregation between the first cell and the second cell of the standard carrier bandwidth, and the network device and the terminal device may communicate on the non-standard bandwidth resource, thereby improving a resource utilization rate.

For example, as shown in fig. 11, the frequency domain resource bandwidth of the network device is 110MHz, and the first terminalAfter the end device accesses the network through the first cell, the bandwidth of a second carrier frequency band communicated with the first cell is 100MHz, for example, the initial frequency point of the frequency domain resource of the network device is f_sThe second carrier frequency band is the initial frequency point f_s+10MHz and ending frequency point f_s+110MHz of 100MHz band. The network device may notify the first terminal device that the first cell and the second cell with the carrier bandwidth of 90MHz communicate with the first terminal device in a carrier aggregation manner through the fourth information. If the third carrier frequency band is the initial frequency point f_sThe ending frequency point is f_sA 90MHz band of +90MHz, the carrier band of the first cell and the carrier band of the second cell including f_s+10MHz to f_sAnd the overlapped frequency band of 80MHz of +90MHz, and the aggregated carrier aggregation frequency band is 110 MHz. The network equipment and the terminal equipment can communicate through the aggregation carrier frequency band in 110 MHz.

Optionally, the network device sends fourth indication information to the first terminal device, where the fourth indication information is used to indicate that the second carrier frequency band of the first cell overlaps with the third carrier frequency band of the second cell.

For example, the fourth indication information may be carried in an RRC message sent by the network device to the terminal device, and the network device may configure, by using the RRC message, candidate cells for carrier aggregation for the first terminal device, where the candidate cells include the second cell, where the fourth indication information indicates a frequency domain resource location of a carrier frequency band of the second cell (i.e., a third carrier frequency band), and the frequency domain resource location of the third carrier frequency band indicated by the fourth indication information overlaps with the frequency domain resource location of the second carrier frequency band. After receiving the RRC message, the first terminal device determines a frequency resource location of the third carrier frequency band according to the first indication information, and determines that the carrier frequency band of the second cell (i.e., the third carrier frequency band) partially overlaps with the carrier frequency band of the first cell (i.e., the second carrier frequency band).

For another example, the fourth indication information may be carried in fourth information, where the fourth information specifically indicates that the first cell and the second cell are in carrier aggregation to communicate with the first terminal device, and a carrier frequency band of the first cell overlaps with a carrier frequency band portion of the second cell.

The network device may receive ninth information from the first terminal device, the ninth information indicating capabilities of the first terminal device. The network device may determine whether to communicate with the first terminal device in a carrier aggregation manner in which cell carrier bands overlap according to the capability of the first terminal device.

Optionally, the ninth information may include one or more of the following indication information:

and fifth indication information, configured to indicate that the first terminal device supports or does not support a carrier aggregation mode of carrier-to-frequency band overlapping of the cell.

and the eighth indication information is used for indicating the frequency domain position of the carrier aggregation mode in which the first terminal equipment supports or does not support carrier frequency band overlapping.

For example, the ninth information includes fifth indication information, and the network device determines, after receiving the fifth indication information from the first terminal device, a carrier aggregation manner in which carrier frequency bands of cells supported by the first terminal device overlap, so as to notify, through the fourth information, that the first terminal device communicates with the first terminal device in a carrier aggregation manner between the first cell and the second cell. If the first terminal device does not support the carrier aggregation mode with overlapping cell carrier bands, the network device and the terminal device may communicate through the first cell, or the network device may communicate with the first terminal device in a mode of aggregation of multiple cell carriers with non-overlapping band resources.

For another example, the ninth information may include sixth indication information, and the network device may determine, after receiving the sixth indication information, whether the first terminal device supports a carrier aggregation mode in which carrier bands in the same frequency band overlap. If the first terminal device supports a carrier aggregation mode in which carrier frequency bands in the same frequency band are overlapped, the network device may communicate with the first terminal device in a mode in which carrier frequency bands are overlapped and carriers of a plurality of cells belonging to the same frequency band are aggregated, so as to improve the resource utilization rate of the network device. If the first terminal device does not support a carrier aggregation mode in which carrier bands in the same frequency band overlap, the network device does not communicate with the first terminal device in a mode in which carrier bands overlap and multiple cells belonging to the same frequency band are aggregated.

For another example, the downlink frequency band n77 is 3300MHz-4200MHz, the downlink frequency band n78 is 3300MHz-3800MHz, and the downlink frequency band n77 partially overlaps with the downlink frequency band n78, but the application is not limited thereto. The ninth information may include seventh indication information, and the first terminal device may indicate, through the seventh indication information, whether the first terminal device supports a carrier aggregation mode in which carrier frequency bands between different frequency bands overlap. If the first terminal device supports a carrier aggregation mode in which carrier frequency bands in different frequency bands are overlapped, the network device may communicate with the first terminal device in a mode in which carrier frequency bands are overlapped and carriers of multiple cells belonging to different frequency bands are aggregated, so as to improve the resource utilization rate of the network device. If the first terminal device does not support the carrier aggregation mode of carrier frequency band overlapping in the same frequency band, the network device does not adopt the mode of carrier aggregation of a plurality of cells of which the carrier frequency bands are overlapped and belong to different frequency bands to communicate with the first terminal device.

The ninth information may include sixth indication information and seventh indication information, or the ninth information may include fifth indication information, and when the fifth indication information indicates that the first terminal device supports a carrier aggregation mode in which carrier bands of cells overlap, the ninth information may include the sixth indication information and/or the seventh indication information. But the application is not limited thereto.

Optionally, the ninth information may further include eighth indication information, where the eighth indication information may indicate that the first terminal device supports frequency domain resources of a carrier aggregation manner in which carrier frequency bands of the cells overlap, for example, the eighth indication information may indicate identification information of a frequency band, or the eighth indication information may indicate that the first terminal device does not support frequency domain resources of a carrier aggregation manner in which carrier frequency bands of the cells overlap. The network device may communicate with the first terminal device through multiple cells with overlapped carrier bands on the frequency domain resources supported by the first terminal device according to the eighth indication information, so as to improve resource utilization.

Optionally, the frequency domain interval between the carrier center frequency point of the first cell and the carrier center frequency point of the second cell is a common multiple of a unit interval of a channel grid and a first subcarrier interval, the channel grid is a candidate set of carrier center frequency points, the interval between two carrier center frequency points belonging to the same frequency band in the channel grid is an integer multiple of the unit interval, and the subcarrier intervals of the first cell and the second cell are both the first subcarrier interval.

In the foregoing description of the carrier bandwidth, it is mentioned that the network device may select a partial band among the frequency bands defined by the system as the carrier band of the cell managed by the network device. For the terminal device, cell search needs to be performed in FR1 and/or FR2 frequency range in the initial access phase, however, as can be seen from the foregoing, FR1 is 450MHz-6000MHz, FR2 is 24250MHz-52600MHz, and if the power consumption overhead of cell search is very large for each frequency of the terminal device, a channel grid is defined, which is a candidate set of carrier center frequency points, to which carrier center frequency points in the communication system all belong. Specifically, a unit interval of the channel grid is specified, or may be referred to as a step size (step size) of the channel grid. The interval between two adjacent carrier central frequency points is the unit interval, and the interval between two carrier central frequency points belonging to the same frequency band is integral multiple of the unit interval. The terminal device may perform a cell search based on the channel grid to reduce power consumption for initial access by the terminal device. Because the communication mechanism that the carrier frequency bands of a plurality of cells can be overlapped is provided, the frequency domain interval between the carrier center frequency point of the first cell and the carrier center frequency point of the second cell is defined as the common multiple of the unit interval of the channel grid and the first subcarrier interval. The terminal device is enabled to search for the first cell and the second cell in the cell.

S1002, the network device communicates with the first terminal device in the second carrier frequency band and the third carrier frequency band.

The network device may schedule the frequency domain resources in the second carrier band and the third carrier band to communicate with the first terminal device, for example, the network device may schedule the frequency domain resources of the aggregated bandwidth of the second carrier band and the third carrier band (i.e., the full-bandwidth frequency domain resources of the carrier aggregated bandwidth) to communicate with the first terminal device in one-time scheduling. Alternatively, the network device may schedule frequency domain resources within the second carrier frequency band or the third carrier frequency band to communicate with the terminal device in one scheduling.

The frequency domain resource of an RB of the first cell within the overlapping frequency band of the second carrier band and the third carrier band is the same as the frequency domain resource of an RB of the second cell. And the network equipment can adopt the same scheduling unit to schedule part or all of the frequency band resources in the aggregated frequency band to communicate with the first terminal equipment.

In one embodiment, the reference frequency point of the first cell is the same as the reference frequency point of the second cell, the reference frequency point corresponding to the first cell is used to determine the position of the resource block of the first cell, and the reference frequency point corresponding to the second cell is used to determine the position of the resource block of the second cell.

In one example, the network device sends fifth information and sixth information, where the fifth information is used to indicate a reference frequency point corresponding to the first cell, and the sixth information is used to indicate a reference frequency point corresponding to the second cell. The reference frequency point of the first cell indicated by the fifth information is the same as the reference frequency point of the second cell indicated by the sixth information

For example, the fifth information is carried in the SIB1 of the first cell and the sixth information is carried in the SIB1 of the second cell. The reference frequency Point corresponding to the cell is Point a, and the Point a corresponding to the first cell is the same as the Point a corresponding to the second cell, so that the starting frequency Point of CRB0 determined by the first terminal device according to the Point a is the same, the subcarrier interval of the first cell is the same as the subcarrier interval of the second cell, and the number of subcarriers included in the RB of the first cell and the RB of the second cell is the same, thereby realizing the alignment of the RB of the first cell and the RB of the second cell.

In another example, the network device may send indication information, where the indication information is used to indicate that the reference frequency point corresponding to the first cell is the same as the reference frequency point corresponding to the second cell. The terminal equipment can determine that the reference frequency point corresponding to the first cell is the same as the reference frequency point of the second cell according to the indication information. Therefore, the RB of the first cell determined by the terminal equipment based on the reference frequency point corresponding to the first cell is aligned with the RB of the second cell determined based on the reference frequency point corresponding to the second cell.

Optionally, the network device may transmit the first reference signal through the first cell and the second cell. The first reference signal may be a demodulation reference signal (DMRS) for demodulating a data channel (e.g., a Physical Downlink Shared Channel (PDSCH)) or may be a channel state information-reference signal (CSI-RS) for a terminal device to perform channel measurement. However, the present application is not limited thereto, and the first reference signal may be other reference signals.

The first reference signal comprises a plurality of symbols, wherein symbols carried in the first reference signal within an overlapping frequency band of the second carrier frequency band and the third carrier frequency band are transmitted by the first cell or the second cell. Symbols of the first reference signal carried in a frequency band of the second carrier band other than the overlapping frequency band are transmitted by the first cell. Symbols of the first reference signal carried in a frequency band of the third carrier frequency band other than the overlapping frequency band are transmitted by the second cell.

For example, the bandwidth of the first reference signal is equal to the bandwidth of the carrier aggregated frequency band, and the network device may generate the first reference signal having the bandwidth equal to the carrier aggregated bandwidth, and transmit the first reference signal in the wide portion by the first cell and the second cell, respectively. E.g., the first cell transmits symbols of the first reference signal in the second carrier band, and the second cell transmits symbols of the first reference signal other than the symbols transmitted by the first cell. Or vice versa, the second cell transmits the symbols of the first reference signal in the third carrier frequency band, and the first cell transmits the symbols of the first reference signal other than the symbols transmitted by the second cell.

The first terminal device receives the first reference signal, for example, the first reference signal is a DMRS, and then the first terminal device demodulates the data channel according to the DMRS after receiving the DMRS. For another example, the first reference signal is a CSI-RS, and the first terminal device acquires Channel State Information (CSI) according to the CSI-RS after receiving the CSI-RS.

After the first terminal device acquires the channel state information based on the first reference signals from the first cell and the second cell, the first terminal device sends the channel state information to the network device. The first terminal device may feed back the channel state information to the first cell or the second cell only once for the first reference signal, and does not need to feed back the channel state information to the first cell and the second cell respectively.

For example, when the network device configures the first reference signal for the first terminal device, only one uplink resource for carrying the channel state information is configured in the reporting configuration associated with the first reference signal. So that the first terminal device can determine that the channel state information obtained based on the first reference signal is reported once on the uplink resource. But the application is not limited thereto. The embodiment can avoid resource waste caused by that the first terminal equipment reports the same channel state information for multiple times.

Optionally, the network device may send, by using a first cell, a second reference signal on a first resource, and send, by using a second cell, a third reference signal on the first resource, where the first resource is a resource within an overlapping frequency band of the second carrier frequency band and the third carrier frequency band, and the initialization sequence of the second reference signal is the same as that of the third reference signal.

The initialization sequence of the second reference signal is the same as that of the third reference signal, and the second reference signal and the third reference signal carried on the first resource are the same. Reference signals that transmit the same sequence in overlapping frequency bands may be transmitted by the network device through the first cell and the second cell.

If the network device needs to send the reference signal 1 with the bandwidth of the carrier aggregation frequency band to the first terminal device, the network device may send, through the first cell, a symbol of the reference signal 1 in the second carrier frequency band, and send, through the second cell, a symbol of the reference signal 1 in the third carrier frequency band. Wherein the symbol sequence of reference signal 1 (i.e., one example of the second reference signal) transmitted by the first cell within the overlapping frequency band is the same as the symbol sequence of reference signal 1 (i.e., one example of the third reference signal) transmitted by the second cell within the overlapping frequency band.

Optionally, the network device sends seventh information to the first terminal device, where the seventh information is used to indicate scrambling code identification information of the second reference signal, and the scrambling code identification information of the second reference signal is used to generate an initialization sequence of the second reference signal. And the network device sends eighth information to the first terminal device, where the eighth information is used to indicate scrambling code identification information of the third reference signal, and the scrambling code identification information of the third reference signal is used to generate an initialization sequence of the third reference signal. Wherein the scrambling code identification information of the second reference signal is the same as the scrambling code identification information of the third reference signal.

For example, the sequence generation formula of the reference signal is as follows:

wherein c (x) is Gold sequence, c (x) is initialization sequence c_initComprises the following steps:

wherein,

the number of slots included in one radio frame in the time domain,

is an orthogonal frequency division multiple access (OFDM) symbol contained in one slot, and l is a carrier carrying a first OFDM symbolNumbering of OFDM symbols of a reference signal within a slot, n_IDIdentification information is scrambled.

Because the second reference signal and the third reference signal are both carried on the first resource, and the time domain parameter and the frequency domain parameter of the second reference signal and the third reference signal are both the same, if the identification information n is scrambled based on the generation formula_IDAnd if so, the second reference signal is the same as the third reference signal.

The network device may generate the second reference signal and the third reference signal based on the same scrambling identification information and notify the first terminal device of the scrambling identification information such that the first terminal device generates a sequence of the second reference signal and the third reference signal based on the scrambling identification information.

The first terminal device receives a fourth reference signal on the first resource, the fourth reference signal comprising the third reference signal and the second reference signal. Since the second reference signal is the same as the third reference signal, the second reference signal transmitted by the first cell on the first resource and the third reference signal transmitted by the second cell on the first resource are superimposed in the channel as a fourth reference signal. And the first terminal equipment obtains the channel state information according to the received fourth reference signal and sends the channel state information to the network equipment.

The first terminal device feeds back the channel state information only once for the fourth reference signal, and the channel state information does not need to be fed back to the first cell and the second cell respectively. For example, the first terminal device determines that the time domain resources of the second reference signal and the third reference signal configured by the network device are the same according to the reference signal configuration information from the network device, and then the first terminal device may determine the channel state information obtained based on the reference signals of the same time domain resources, and the first terminal device only reports the channel state information to the network device once. Or, the network device may instruct the first terminal device to report the channel state information only once through the reference signal configuration information. But the application is not limited thereto. The embodiment can avoid resource waste caused by that the first terminal equipment reports the same channel state information for multiple times.

Optionally, the network device and the first terminal device may determine the maximum transmission rate of the first terminal device according to the bandwidth of the second carrier frequency band, the bandwidth of the third carrier frequency band, and a first parameter, where the first parameter is used to characterize an influence of an overlapping frequency band of the second carrier frequency band and the third carrier frequency band on the maximum transmission rate.

The embodiment of the application provides that the maximum transmission rate of the first terminal equipment is determined by introducing the first parameter, and the maximum transmission rate of the terminal equipment in a carrier aggregation communication mode with overlapped cell frequency bands can be accurately calculated.

In one example, the first parameter is an overlap bandwidth adjustment factor α_scaleThe network device and the first terminal device may calculate the maximum transmission rate R of the first terminal device according to the following formula_dataThe unit of the maximum transmission rate calculated by the following formula is megabits per second (Mbps).

Wherein J is the number of cells (carriers) in the carrier aggregation mode, J refers to the jth carrier,

is the maximum number of data transmission layers supported by the jth carrier,

is the maximum modulation order supported by the jth carrier, f^(j)Is the scaling factor of the jth carrier, R_maxIs the maximum code rate and is,

is the average duration of the OFDM symbols in the sub-frame corresponding to the sub-carrier spacing,

is the maximum number of RBs, OH in the carrier band of the corresponding subcarrier spacing^jIs the overhead of the link.

In another example, the first parameter is the number of RBs included in the overlapped band

The network device and the first terminal device may calculate the maximum transmission rate R of the first terminal device according to the following formula_data。

Where k is the number of carriers with overlapping frequency bands among the J carriers.

In the foregoing, a manner that the network device can update the carrier frequency band of the serving cell by notifying the terminal device is introduced, and a manner that the network device can implement full utilization of frequency domain resources of the non-standard bandwidth of the network device by adopting a carrier aggregation manner through two cells in which the carrier bandwidth is the standard bandwidth and the carrier frequency band is partially overlapped. In a resource allocation method provided in this embodiment of the present invention, a cell may include multiple carrier frequency bands, and a network device may broadcast the multiple carrier frequency bands of the cell, so that a terminal device with corresponding capability or requirement can communicate with the cell through the multiple carrier frequency bands, thereby achieving full utilization of frequency domain resources of non-standard bandwidth of the network device, and improving resource utilization. The resource allocation method 1200 provided in the embodiment of the present application is described below with reference to fig. 12.

S1201, the network device sends tenth information, where the tenth information is used for the terminal device to establish a communication connection with the first cell, and the tenth information is used for indicating a first carrier frequency band and a second carrier frequency band of the first cell.

The first terminal device receives the tenth information, and determines the first carrier frequency band and the second carrier frequency band of the first cell according to the tenth information.

The bandwidth of the first carrier frequency band and the bandwidth of the second carrier frequency band are standard bandwidths defined by a system. The first carrier band and the second carrier band constitute a carrier band of a non-standard bandwidth of the first cell.

By way of example and not limitation, the tenth information is SIB 1. The network device may broadcast the multiple carrier bands of the first cell with the tenth information. The terminal device may select one or more carrier bands of the first cell to communicate with the first cell according to the terminal device capability after receiving the tenth information.

And S1202, the first terminal device sends eleventh information to the network device, wherein the eleventh information is used for indicating that the first terminal device requests to establish communication connection with the first cell, the eleventh information includes ninth indication information, and the ninth indication information is used for indicating that the first terminal device supports communication with the first cell on the first carrier frequency band and/or the second carrier frequency band.

After receiving the tenth information in S1201, the first terminal device determines to access the network through the first cell, and sends eleventh information to the network device, where the eleventh information is used to request to establish a communication connection with the first cell. The first terminal device may determine, according to the tenth information, a carrier frequency band for communication after establishing a communication connection with the first cell, and the first terminal device may determine, according to its own capability and/or communication requirement, to communicate with the first cell on one or more carrier frequency bands, and notify the network device through the ninth indication information in the eleventh information.

For example, the eleventh information may be random access information, and the ninth indication information may be a random access preamble sequence. For example, a first preamble sequence is used to indicate communication with a first cell in a first carrier band, a second preamble sequence is used to indicate communication with the first cell in a second carrier band, and a third preamble sequence is used to indicate communication with the first cell in the first carrier band and the second carrier band. The first terminal device may inform the network device of the carrier frequency bands supported by the network device for communication with the first cell by transmitting the preamble sequence to the network device. The network device receives eleventh information from the first terminal device, and if the eleventh information includes the first preamble sequence, the network device may determine that the first terminal device supports communication with the first cell in the first carrier frequency band, and after establishing a communication connection with the first terminal device, the network device communicates with the first terminal device in the first carrier frequency band of the first cell; if the eleventh information includes the second preamble sequence, the network device may determine that the first terminal device supports communication with the first cell in the second carrier frequency band, and after establishing communication connection with the first terminal device, the network device may communicate with the first terminal device in the second carrier frequency band of the first cell; if the eleventh information includes the third preamble sequence, the network device may determine that the first terminal device supports communication with the first cell in the first carrier frequency band and the second carrier frequency band, and after establishing a communication connection with the first terminal device, the network device may communicate with the first terminal device in the first carrier frequency band and the second carrier frequency band of the first cell.

Optionally, after the network device establishes a communication connection with the first terminal device through the first cell, if the network device and the first terminal device communicate in the first carrier frequency band and the second carrier frequency band, the network device may respectively activate one BWP in the first carrier frequency band and the second carrier frequency band, and communicate with the first terminal device on the activated BWP in the first carrier frequency band and the second carrier frequency band.

According to the scheme, the first cell can contain a plurality of carrier frequency bands, and the frequency bands with a plurality of standard bandwidths can form the frequency band with a non-standard bandwidth of the first cell, so that the utilization rate of resources is improved. The network device notifies the terminal device that the first cell includes multiple carrier frequency bands through the tenth information, and the terminal device can communicate with the first cell through the multiple carrier frequency bands, so that the utilization rate of resources can be improved, and the transmission rate of communication can be improved. The terminal equipment which does not support the communication with the first cell through a plurality of carrier frequency bands or the terminal equipment can select to communicate with the first cell through one carrier frequency band according to the communication requirement, so that the terminal equipment can access the network as required, and the flexibility of the system is improved.

In the foregoing fig. 12 embodiment, a cell may include multiple carrier bands, a network device may broadcast the multiple carrier bands of the cell, and a terminal device notifies the network device that the network device can communicate with the cell on one or more carrier bands after accessing the cell. In a resource allocation method provided in an embodiment of the present application, a cell may include multiple carrier frequency bands, and a network only broadcasts one carrier frequency band of the cell, and after a terminal device accesses the cell, the network device allocates other carrier frequency bands of the cell for the terminal device, so that the terminal device and the cell can communicate on the multiple carrier frequency bands. The frequency domain resources of the non-standard bandwidth of the network equipment are fully utilized, and the resource utilization rate is improved. A resource allocation method 1300 provided in the embodiment of the present application is described below with reference to fig. 13.

S1301, the network device sends twelfth information, where the twelfth information is used for the terminal device to establish a communication connection with the first cell, the twelfth information includes tenth indication information, and the tenth indication information is used for indicating that a carrier frequency band of the first cell is the first carrier frequency band.

And the first terminal equipment receives the twelfth information from the network equipment, and determines that the carrier frequency band of the first cell is the first carrier frequency band according to the tenth indication information in the twelfth information. By way of example and not limitation, this twelfth information is SIB 1.

S1302, the first terminal device sends thirteenth information to the network device, where the thirteenth information is used to request to establish a communication connection with the first cell.

Accordingly, the network device receives the thirteenth information from the first terminal device, and determines that the terminal device requests to establish a communication connection with the first cell. The network device may establish a communication connection with the first terminal device through the first cell.

S1303, the network device sends fourteenth information to the first terminal device, where the fourteenth information is used to indicate that the second carrier frequency band is added to the carrier frequency band of the first cell.

Accordingly, the first terminal device receives the fourteenth information from the network device, and determines that the second carrier band is added to the carrier band of the first cell. After the first terminal device receives the fourteenth information, the network device may communicate with the first terminal device in the first carrier frequency band and the second carrier frequency band of the first cell. The bandwidth of the first carrier band and the second carrier band component band may be a non-standard bandwidth of the first cell. The utilization of the resources of the first cell may be improved.

The first carrier band may be referred to as a broadcast carrier band and the second carrier band may be referred to as a dedicated carrier band. The bandwidth of the first carrier band and the bandwidth of the second carrier band may be standard bandwidths defined by the system.

According to the scheme, the network equipment can configure another carrier frequency band of the service cell for the terminal equipment after the terminal equipment is accessed to the network, so that the network equipment can communicate with the terminal equipment through the plurality of carrier frequency bands of the first cell, the utilization rate of resources of the first cell can be improved, and the data rate is improved.

In the resource allocation method, the network device may send broadcast information indicating that a bandwidth of a carrier frequency band of a first cell is a first bandwidth, where the first bandwidth is a non-standard bandwidth. After the terminal device accesses the first cell, the bandwidth of the BWP configured for the terminal device by the network device needs to meet a preset condition, where the preset condition is that the BWP bandwidth is less than or equal to the second bandwidth, and the second bandwidth is the maximum bandwidth in the standard bandwidth that is less than the first bandwidth.

For example, the network device may send the broadcast information to indicate that the bandwidth of the carrier frequency band of the first cell is 110MHz, and 100MHz is the largest bandwidth in the standard bandwidth smaller than 110MHz, so that after the terminal device accesses the first cell, the bandwidth of the BWP configured for the terminal device by the network device is smaller than or equal to 100MHz, that is, smaller than or equal to 275 RBs. And BWPs configured by the network device for the plurality of terminal devices establishing communication connections with the first cell may respectively occupy frequency domain resources of the 110MHz frequency band of the first cell. For example, the network device may configure a BWP for a terminal device to occupy the low frequency band 60MHz of the 110MHz band, and configure BWPs for one or more other terminal devices to include frequency domain resources of the 110MHz band other than the low frequency band 60 MHz. But the application is not limited thereto. The scheme can enable the network equipment to communicate by using the frequency domain resource of the non-standard bandwidth of the first cell, and improves the utilization rate of the resource.

Optionally, the network device configures at least two BWPs for the terminal device, and the network device may activate multiple BWPs in the at least two BWPs, where the frequency domain resource formed by the activated multiple BWPs is a frequency domain resource of the non-standard frequency band of the cell. The network device communicates with the terminal device over the active plurality of BWPs. The network device and the terminal device are enabled to communicate by using the frequency band resource of the non-standard bandwidth of the first cell. The data rate of the terminal equipment is improved, and the resource utilization rate is improved.

The embodiment of the present application further provides a resource allocation method, where the network device may send broadcast information to indicate that a carrier frequency band of the first cell is the first carrier frequency band, a bandwidth of the first carrier frequency band is a third bandwidth, and the third bandwidth is a standard bandwidth. After the terminal device accesses the network through the first cell, the network device notifies the terminal device that the carrier bandwidth of the first cell is updated to a second carrier bandwidth from the first carrier bandwidth, the bandwidth of the second carrier bandwidth is a fourth bandwidth, and the fourth bandwidth is a non-standard bandwidth. The network device communicates with the terminal device over the second carrier bandwidth.

For example, the bandwidth of the frequency domain resource of the first cell is a nonstandard bandwidth of 13MHz, the network device indicates, through the broadcast information, that the bandwidth of the first carrier frequency band of the first cell is 15MHz, after the terminal device accesses the network through the first cell, the network device notifies the terminal device that the carrier bandwidth of the first cell is updated from the first carrier frequency band to the second carrier frequency band, and the bandwidth of the second carrier frequency band is 13 MHz. The network device and the terminal device communicate on the second carrier frequency band. Or the network device broadcasts information indicating that the bandwidth of the first carrier frequency band of the first cell is 10MHz, after the terminal device accesses the network through the first cell, the network device notifies the terminal device that the carrier bandwidth of the first cell is updated from the first carrier frequency band to a second carrier frequency band of 13MHz bandwidth, and the network device and the terminal device communicate on the second carrier frequency band. The network device and the terminal device are enabled to communicate by using the frequency band resource of the non-standard bandwidth of the first cell. The data rate of the terminal equipment is improved, and the resource utilization rate is improved.

Optionally, the terminal device may receive a downlink signal from the network device through a plurality of Radio Frequency (RF) links, where frequency domain resource portions corresponding to downlink signals received by at least two RF links of the plurality of RF links do not overlap after overlapping.

For example, the bandwidth of the carrier frequency band of the serving cell of the terminal device is 13MHz, as shown in fig. 14, the terminal device may receive the downlink signal from the network device through 2 RF links, where the RF link 1 receives the downlink signal carried on the 10MHz frequency domain resource from the start frequency point of the 13MHz frequency band, and the RF link 2 receives the downlink signal carried on the 10MHz frequency domain resource before the end frequency point of the 13MHz frequency band. The terminal equipment can combine the downlink signals on the overlapped 7MHz frequency domain resources received on the RF link 1 and the RF link 2 for data processing, and the data processing reliability can be improved. However, the present application is not limited thereto, and the frequency domain resources for receiving the downlink signals by the RF links 1 and 2 may be 10MHz and 3MHz, respectively, or 5MHz and 10MHz, respectively. According to the scheme, the communication equipment can receive downlink signals on different frequency domain resources by combining a plurality of RF links, so that the communication equipment can receive signals on frequency domain resources with non-standard bandwidth.

The method provided by the present application is described in detail above with reference to fig. 3 to 14. The following figures illustrate communication devices and communication devices provided by the present application. In order to implement the functions in the method provided by the present application, each network element may include a hardware structure and/or a software module, and the functions are implemented in the form of a hardware structure, a software module, or a hardware structure and a software module. Whether any of the above-described functions is implemented as a hardware structure, a software module, or a hardware structure plus a software module depends upon the particular application and design constraints imposed on the technical solution.

Fig. 15 is a schematic block diagram of a communication device provided herein. As shown in fig. 15, the communication apparatus 1500 may include a transceiving unit 1520.

In one possible design, the communication apparatus 1500 may correspond to the terminal device (e.g., the first terminal device and/or the second terminal device) in the above method, or a chip configured (or used) in the terminal device, or other apparatuses, modules, circuits, or units capable of implementing the method of the terminal device.

It is to be understood that the communication apparatus 1500 may include means for performing the method performed by the terminal device among the methods illustrated in fig. 3, 10, 12, and 13. Also, the units and other operations and/or functions described above in the communication apparatus 1500 are respectively for realizing the corresponding flows of the methods shown in fig. 3, fig. 10, fig. 12 and fig. 13.

Optionally, the communication apparatus 1500 may further include a processing unit 1510, and the processing unit 1510 may be configured to process instructions or data to implement the corresponding operations.

It should also be understood that, when the communication apparatus 1500 is a chip configured (or used) in a terminal device, the transceiving unit 1520 in the communication apparatus 1500 may be an input/output interface or circuit of the chip, and the processing unit 1510 in the communication apparatus 1500 may be a processor in the chip.

Optionally, the communication apparatus 1500 may further include a storage unit 1530, where the storage unit 1530 may be used for storing instructions or data, and the processing unit 1510 may execute the instructions or data stored in the storage unit to enable the communication apparatus to implement corresponding operations.

It is to be understood that the transceiving unit 1520 in the communication apparatus 1500 may be implemented by a communication interface (e.g., a transceiver or an input/output interface), for example, may correspond to the transceiver 1610 in the terminal device 1600 shown in fig. 16. The processing unit 1510 in the communication apparatus 1500 may be implemented by at least one processor, and may for example correspond to the processor 1620 in the terminal device 1600 shown in fig. 16. The processing unit 1510 in the communication device 1500 may also be implemented by at least one logic circuit. A storage unit 1530 in the communication apparatus 1500 may correspond to a memory in the terminal device 1600 shown in fig. 16.

It should also be understood that the specific processes of the units for executing the corresponding steps are described in detail in the above method, and are not described herein again for brevity.

In another possible design, the communication apparatus 1500 may correspond to a network device in the above method, for example, or a chip configured (or used) in the network device, or other apparatus, module, circuit, or unit capable of implementing the method of the network device.

It is to be understood that the communications apparatus 1500 may include means for performing the methods performed by the network device in the methods illustrated in fig. 3, 10, 12, and 13. Also, the units and other operations and/or functions described above in the communication apparatus 1500 are respectively for realizing the corresponding flows of the methods shown in fig. 3, fig. 10, fig. 12 and fig. 13.

It should also be understood that, when the communication apparatus 1500 is a chip configured (or used) in a network device, the transceiving unit 1520 in the communication apparatus 1500 may be an input/output interface or circuit of the chip, and the processing unit 1510 in the communication apparatus 1500 may be a processor in the chip.

It should be understood that when the communication apparatus 1500 is a network device, the transceiving unit 1520 in the communication apparatus 1500 may be implemented by a communication interface (such as a transceiver or an input/output interface), for example, may correspond to the transceiver 1710 in the network device 1700 shown in fig. 17. The processing unit 1510 in the communication apparatus 1700 may be implemented by at least one processor, for example, may correspond to the processor 1720 in the network device 1700 shown in fig. 17, and the processing unit 1510 in the communication apparatus 1500 may be implemented by at least one logic circuit. The storage unit 1530 in the communication apparatus 1500 may correspond to a memory in the network device 1700 shown in fig. 17.

Fig. 16 is a schematic structural diagram of a terminal device 1600 provided in the present application. The terminal device 1600 can be applied to the system shown in fig. 1, and performs the functions of the terminal device in the method. As shown, the terminal device 1600 includes a processor 1620 and a transceiver 1610. Optionally, the terminal device 1600 further comprises a memory. The processor 1620, the transceiver 1610 and the memory may communicate with each other via an internal connection path to transmit a control signal and/or a data signal. The memory is used for storing computer programs, and the processor 1620 is used for executing the computer programs in the memory to control the transceiver 1610 to transmit and receive signals.

The processor 1620 may be configured to perform the actions described in the foregoing method, which are implemented by the terminal device, and the transceiver 1610 may be configured to perform the actions described in the foregoing method, which are transmitted to or received from the network device by the terminal device. Please refer to the description of the method above, which is not repeated herein.

Optionally, the terminal device 1600 may further include a power supply for supplying power to various devices or circuits in the terminal device.

Fig. 17 is a schematic structural diagram of a network device 1700 provided in the present application. The network device 1700 may be applied in a system as shown in fig. 1, and performs the function of the second node in the above method. As shown, the network device 1700 includes a processor 1720 and a transceiver 1710. Optionally, the network device 1700 further comprises a memory. The processor 1720, the transceiver 1710, and the memory may communicate with each other via internal communication paths to transfer control and/or data signals. The memory is used for storing computer programs, and the processor 1720 is used for executing the computer programs in the memory to control the transceiver 1710 to transmit and receive signals.

The processor 1720 may be configured to perform the actions described in the foregoing methods that are implemented internally by the network device, and the transceiver 1710 may be configured to perform the actions described in the foregoing methods that the network device transmits to or receives from the network device. Please refer to the description of the method above, which is not repeated herein.

Optionally, the network device 1700 may further comprise a power supply for providing power to various devices or circuits in the network device.

In the terminal device shown in fig. 16 and the network device shown in fig. 17, the processor and the memory may be combined into a processing device, and the processor is configured to execute the program codes stored in the memory to implement the above functions. In particular implementations, the memory may be integrated within the processor or may be separate from the processor. The processor may correspond to the processing unit in fig. 15. The transceiver may correspond to the transceiver unit in fig. 15. The transceiver 1610 may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). Wherein the receiver is used for receiving signals, and the transmitter is used for transmitting signals.

In this application, 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, discrete gate or transistor logic, discrete hardware components, and may implement or perform the methods, steps, and logic blocks of the present application. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method in connection with the present application may be embodied directly in a hardware processor, or in a combination of the hardware and software modules within the processor.

In this application, the memory may be a nonvolatile memory, such as a Hard Disk Drive (HDD) or a solid-state drive (SSD), and may also be a volatile memory (RAM), for example, a random-access memory (RAM). The memory is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited to such. The memory in this application may also be circuitry or any other device capable of performing a storage function to store program instructions and/or data.

The application also provides a processing apparatus comprising a processor and a (communication) interface; the processor is configured to perform any of the methods described above.

It is to be understood that the processing means described above may be one or more chips. For example, the processing device may be a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), a system on chip (SoC), a Central Processing Unit (CPU), a Network Processor (NP), a digital signal processing circuit (DSP), a Microcontroller (MCU), a Programmable Logic Device (PLD), or other integrated chips.

In accordance with the methods provided herein, there is also provided a computer program product comprising: computer program code which, when executed by one or more processors, causes an apparatus comprising the processor to perform the methods illustrated in figures 3, 10, 12 and 13.

The solutions provided in 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 procedures or functions described in accordance with the present application are generated, in whole or in part. The computer instructions may be stored in or transmitted from a computer-readable storage medium to another computer-readable storage medium, which may be any available medium that can be accessed by a computer or a data storage device including one or more available media, integrated servers, data centers, and the like. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., Digital Video Disk (DVD)), or a semiconductor medium, among others.

There is also provided a computer readable storage medium having program code stored thereon, which when executed by one or more processors, causes an apparatus comprising the processors to perform the methods illustrated in fig. 3, 10, 12 and 13, in accordance with the methods provided herein.

According to the method provided by the present application, the present application further provides a system, which includes the foregoing apparatus for implementing the method of the terminal device and at least one of the foregoing apparatuses for implementing the method of the network device.

In the several aspects provided in this application, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways. For example, the above-described apparatus is merely illustrative, and for example, the division of the units is only one type of logical division, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the scheme.

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

Claims

1. A method for resource allocation, comprising:

sending first information to a first terminal device, where the first information is used to indicate that a carrier frequency band of a first cell is updated from a first carrier frequency band to a second carrier frequency band, the first cell is a serving cell of the first terminal device, and the second carrier frequency band includes frequency domain resources other than the first carrier frequency band;

communicating with the first terminal device over the second carrier frequency band.

2. The method of claim 1, further comprising:

transmitting second information to the first terminal device, the second information for configuring a bandwidth part BWP in the second carrier band,

the second information includes first indication information, where the first indication information is used to indicate an offset between an initial frequency point of the bandwidth portion BWP and a BWP reference frequency point, and the BWP reference frequency point is the initial frequency point of the first carrier frequency band or the initial frequency point of the second carrier frequency band.

3. The method according to claim 2, wherein the BWP reference frequency point is a start frequency point of the first carrier band, and the second information further includes second indication information, where the second indication information is used to indicate that the start frequency point of the bandwidth portion BWP is greater than, less than, or equal to the start frequency point of the first carrier band.

4. The method according to any one of claims 1 to 3, further comprising:

and sending third information, where the third information is used for the first terminal device to establish a communication connection with the first cell, and the third information includes third indication information, and the third indication information is used for indicating that a carrier frequency band of the first cell is the first carrier frequency band.

5. The method according to any one of claims 1 to 4, further comprising:

communicating with a second terminal device over the first carrier frequency band,

the serving cell of the second terminal device is the first cell, and a carrier frequency band in which the first cell communicates with the second terminal device is the first carrier frequency band.

6. The method according to any one of claims 1 to 5, further comprising:

sending fourth information to the first terminal device, where the fourth information is used to indicate that the first terminal device communicates with the first terminal device in a carrier aggregation manner between the first cell and a second cell, where a carrier band of the second cell is a third carrier band, and the second carrier band partially overlaps with the third carrier band;

communicating with the first terminal device over the second carrier frequency band and a third carrier frequency band.

7. The method of claim 6, further comprising:

sending fourth indication information to the first terminal device, where the fourth indication information is used to indicate that the second carrier frequency band of the first cell overlaps with the third carrier frequency band of the second cell.

8. The method according to claim 6 or 7, wherein a frequency domain resource of one resource block of the first cell in an overlapping frequency band of the second carrier frequency band and the third carrier frequency band is the same as a frequency domain resource of one resource block of the second cell, and the resource block is a frequency domain resource scheduling unit of a cell.

9. The method according to any one of claims 6 to 7, wherein the reference frequency point corresponding to the first cell is the same as the reference frequency point corresponding to the second cell, the reference frequency point corresponding to the first cell is used for determining the position of the resource block of the first cell, and the reference frequency point corresponding to the second cell is used for determining the position of the resource block of the second cell.

10. The method according to any one of claims 6 to 9, further comprising:

transmitting a first reference signal through the first cell and the second cell, the first reference signal comprising a plurality of symbols,

wherein symbols in the first reference signal that are carried within an overlapping band of the second carrier band and the third carrier band are transmitted by the first cell or the second cell, symbols in the first reference signal that are carried within a band of the second carrier band other than the overlapping band are transmitted by the first cell, and symbols in the first reference signal that are carried within a band of the third carrier band other than the overlapping band are transmitted by the second cell.

11. The method according to any one of claims 6 to 9, further comprising:

transmitting, by the first cell, a second reference signal on a first resource; and (c) a second step of,

transmitting a third reference signal on the first resource through the second cell,

wherein the first resource is a resource in an overlapping frequency band of the second carrier frequency band and the third carrier frequency band, and the initialization sequence of the second reference signal is the same as that of the third reference signal.

12. The method of claim 11, further comprising:

sending seventh information to the first terminal device, where the seventh information is used to indicate scrambling code identification information of the second reference signal, and the scrambling code identification information of the second reference signal is used to generate an initialization sequence of the second reference signal;

sending eighth information to the first terminal device, where the eighth information is used to indicate scrambling code identification information of the third reference signal, and the scrambling code identification information of the third reference signal is used to generate an initialization sequence of the third reference signal;

wherein the scrambling code identification information of the second reference signal is the same as the scrambling code identification information of the third reference signal.

13. The method according to claim 11 or 12, further comprising:

and receiving channel state information from the first terminal device, wherein the channel state information is corresponding to the second reference signal and the third reference signal.

14. The method according to any one of claims 6 to 13, further comprising:

receiving ninth information from the first terminal device, wherein the ninth information is used for indicating the capability of the first terminal device, and the ninth information comprises one or more of the following indication information:

15. The method according to any one of claims 6 to 14, wherein a frequency domain interval between a carrier center frequency point of the first cell and a carrier center frequency point of the second cell is a common multiple of a unit interval and a first subcarrier interval of a channel grid, the channel grid is a candidate set of carrier center frequency points, an interval between two carrier center frequency points belonging to a same frequency band in the channel grid is an integer multiple of the unit interval, and the subcarrier intervals of the first cell and the second cell are both the first subcarrier interval.

16. The method according to any one of claims 6 to 15, further comprising:

and determining the maximum transmission rate of the first terminal device according to the bandwidth of the second carrier frequency band, the bandwidth of the third carrier frequency band and a first parameter, wherein the first parameter is used for representing the influence of an overlapped frequency band of the second carrier frequency band and the third carrier frequency band on the maximum transmission rate.

17. A method for resource allocation, comprising:

receiving first information from a network device, where the first information is used to indicate that a carrier frequency band of a first cell is updated from a first carrier frequency band to a second carrier frequency band, the first cell is a serving cell of a first terminal device, and the second carrier frequency band includes frequency domain resources outside the first carrier frequency band;

communicating with the first cell in the second carrier band.

18. The method of claim 17, further comprising:

receiving second information from the network device, the second information for configuring a bandwidth part BWP in the second carrier band,

19. The method according to claim 18, wherein the BWP reference frequency point is a start frequency point of the first carrier band, and the second information further includes second indication information, where the second indication information is used to indicate that the start frequency point of the bandwidth portion BWP is greater than, less than or equal to the start frequency point of the first carrier band.

20. The method of any one of claims 17 to 19, further comprising:

21. The method of any one of claims 17 to 20, further comprising:

receiving fourth information from the network device, where the fourth information is used to instruct the network device to communicate with the first terminal device in a carrier aggregation manner between the first cell and a second cell, and a second carrier band of the first cell partially overlaps with a third carrier band of the second cell;

communicating with the network device over the second carrier frequency band and a third carrier frequency band.

22. The method of claim 21, further comprising:

receiving fourth indication information from the network device, the fourth indication information indicating that the second carrier band of the first cell partially overlaps with the third carrier band of the second cell.

23. The method according to claim 21 or 22, wherein a frequency domain resource of one resource block of the first cell in an overlapping frequency band of the second carrier frequency band and the third carrier frequency band is the same as a frequency domain resource of one resource block of the second cell, and the resource block is a frequency domain resource scheduling unit of a cell.

24. The method according to any one of claims 21 to 23, wherein the reference frequency point corresponding to the first cell is the same as the reference frequency point corresponding to the second cell, the reference frequency point corresponding to the first cell is used for determining a position of the resource block of the first cell, and the reference frequency point corresponding to the second cell is used for determining a position of the resource block of the second cell.

25. The method of any one of claims 21 to 24, further comprising:

receiving a first reference signal, the first reference signal comprising a plurality of symbols,

26. The method of any one of claims 21 to 24, further comprising:

receiving a fourth reference signal on the first resource, the fourth reference signal comprising a second reference signal from the first cell and a third reference signal of the second cell,

wherein the first resource is a resource in an overlapping frequency band of the second carrier frequency band and the third carrier frequency band, and the initialization sequence of the second reference signal is the same as the initialization sequence of the third reference signal.

27. The method of claim 26, further comprising:

receiving seventh information from the network device, where the seventh information is used to indicate scrambling code identification information of the second reference signal, and the scrambling code identification information of the second reference signal is used to generate an initialization sequence of the second reference signal;

receiving eighth information from the network device, where the eighth information is used to indicate scrambling code identification information of the third reference signal, and the scrambling code identification information of the third reference signal is used to generate an initialization sequence of the third reference signal;

28. The method of claim 26 or 27, further comprising:

obtaining channel state information according to the fourth reference signal, wherein the channel state information is corresponding to the second reference signal and the third reference signal;

and sending the channel state information to the network equipment.

29. The method of any one of claims 21 to 28, further comprising:

30. The method according to any one of claims 21 to 29, wherein a frequency domain interval between a carrier center frequency point of the first cell and a carrier center frequency point of the second cell is a common multiple of a unit interval and a first subcarrier interval of a channel grid, the channel grid is a candidate set of carrier center frequency points, an interval between two carrier center frequency points belonging to a same frequency band in the channel grid is an integer multiple of the unit interval, and the subcarrier intervals of the first cell and the second cell are both the first subcarrier interval.

31. The method of any one of claims 21 to 30, further comprising:

and determining a maximum transmission rate according to the bandwidth of the second carrier frequency band, the bandwidth of the third carrier frequency band and a first parameter, wherein the first parameter is used for characterizing the influence of the overlapping frequency band of the second carrier frequency band and the third carrier frequency band on the maximum transmission rate.

32. A communications apparatus, comprising:

a processing unit, configured to determine first information, where the first information is used to indicate to a first terminal device to update a carrier frequency band of a first cell from a first carrier frequency band to a second carrier frequency band, where the first cell is a serving cell of the first terminal device, and the second carrier frequency band includes frequency domain resources other than the first carrier frequency band;

a receiving and sending unit, configured to send the first information to the first terminal device;

the transceiver unit is further configured to communicate with the first terminal device over the second carrier frequency band.

33. A communications apparatus, comprising:

a transceiver unit, configured to receive first information from a network device, where the first information is used to indicate that a carrier frequency band of a first cell is updated from a first carrier frequency band to a second carrier frequency band, the first cell is a serving cell of a first terminal device, and the second carrier frequency band includes frequency domain resources outside the first carrier frequency band;

the processing unit is used for determining that the carrier frequency band of the first cell is updated to a second carrier frequency band from a first carrier frequency band according to the first information;

the transceiver component is further configured to communicate with the first cell in the second carrier frequency band.

34. A communications apparatus comprising a processor and a memory, the memory coupled to the processor, the processor configured to perform the method of any of claims 1 to 16 or the method of any of claims 17 to 31.

35. A computer-readable storage medium storing instructions that, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 16 or the method of any one of claims 17 to 31.

36. A computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1 to 16 or for performing the method of any one of claims 17 to 31.