Carrier configuration method, device and system, communication equipment, readable storage medium and program product

Abstract

The invention relates to a carrier configuration method, device and system, communication equipment, a computer readable storage medium and a computer program product. The method comprises the following steps: sending a reference signal to a terminal on each downlink frequency band; receiving measurement feedback information sent by the terminal; obtaining channel state information of each downlink frequency band according to the measurement feedback information; the channel state information is obtained by measuring the channel quality of a downlink frequency band by the terminal according to the reference signal; determining a target downlink frequency band from the downlink frequency bands according to the channel state information of the downlink frequency bands; sending carrier configuration information to the terminal according to the target downlink frequency band; the carrier configuration information is used for indicating the terminal to receive downlink data in the target downlink frequency band. By adopting the method, the adaptability between the carrier configuration and the actual wireless transmission environment can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, and in particular to a carrier configuration method, device, system, communication device, computer readable storage medium and computer program product. BACKGROUND

[0002] With the development of communication technology, carrier aggregation (CA) technology is applied to data transmission of terminal devices. The 3rd generation partner project (3GPP) proposes low band carrier aggregation via switching, and a terminal device can use carrier resources of different frequency bands by switching between different low frequency carriers. However, the adaptability between the switching configuration mode of the downlink carrier of the terminal device in the related technology and the actual wireless transmission environment is low. SUMMARY

[0003] Therefore, it is necessary to provide a carrier configuration method, device, system, communication device, computer readable storage medium and computer program product.

[0004] In a first aspect, the present application provides a carrier configuration method, comprising:

[0005] sending a reference signal to a terminal on each downlink frequency band;

[0006] receiving measurement feedback information sent by the terminal;

[0007] obtaining channel state information of each downlink frequency band according to the measurement feedback information; the channel state information is obtained by the terminal according to the reference signal to measure the channel quality of the downlink frequency band;

[0008] determining a target downlink frequency band from each downlink frequency band according to the channel state information of each downlink frequency band;

[0009] sending carrier configuration information to the terminal according to the target downlink frequency band; the carrier configuration information is used to instruct the terminal to receive downlink data on the target downlink frequency band.

[0010] In one of the embodiments, after receiving the measurement feedback information sent by the terminal, the method further comprises: obtaining the moving speed information of the terminal according to the measurement feedback information; determining the carrier configuration duration of the terminal according to the moving speed information; wherein the carrier configuration duration is negatively related to the moving speed of the terminal; the sending of the carrier configuration information to the terminal according to the target downlink frequency band comprises: sending the carrier configuration information to the terminal according to the target downlink frequency band and the carrier configuration duration; the carrier configuration information is used to instruct the terminal to receive downlink data in the target downlink frequency band within the carrier configuration duration.

[0011] In one of the embodiments, the determining of the target downlink frequency band from the downlink frequency bands according to the channel state information of the downlink frequency bands comprises: in the case that the channel state information of each of the downlink frequency bands indicates that the channel quality of the downlink frequency band meets the quality condition, obtaining the bandwidth information of each of the downlink frequency bands, and obtaining the service type information of the terminal; determining the target downlink frequency band according to the service type information and the bandwidth information of each of the downlink frequency bands.

[0012] In one of the embodiments, the determining of the target downlink frequency band according to the service type information and the bandwidth information of each of the downlink frequency bands comprises: in the case that the service type information indicates that the current service of the terminal includes high-bandwidth service, determining the target downlink frequency band according to a first downlink frequency band in the downlink frequency bands; in the case that the service type information indicates that the current service of the terminal does not include high-bandwidth service, determining the target downlink frequency band according to a second downlink frequency band in the downlink frequency bands; the bandwidth of the second downlink frequency band is smaller than that of the first downlink frequency band.

[0013] In one of the embodiments, the determining of the target downlink frequency band from the downlink frequency bands according to the channel state information of the downlink frequency bands comprises: in the case that the channel state information of at least one of the downlink frequency bands indicates that the channel quality of the downlink frequency band does not meet the quality condition, determining the target downlink frequency band according to the downlink frequency band with the highest channel quality.

[0014] In a second aspect, the application provides a carrier configuration method, comprising:

[0015] receiving the reference signals sent by a network device on downlink frequency bands;

[0016] measuring the channel quality of each of the downlink frequency bands according to the reference signals of the downlink frequency bands, to obtain the channel state information of each of the downlink frequency bands;

[0017] obtaining measurement feedback information according to the channel state information of each of the downlink frequency bands;

[0018] sending the measurement feedback information to the network device;

[0019] receiving carrier configuration information sent by the network device; the carrier configuration information is used to instruct the terminal to receive downlink data in a target downlink frequency band; the target downlink frequency band is determined by the network device from each of the downlink frequency bands according to the channel state information of each of the downlink frequency bands.

[0020] In one embodiment, the measurement feedback information is obtained according to the channel state information of each of the downlink frequency bands, including: obtaining mobile speed information; obtaining the measurement feedback information according to the mobile speed information and the channel state information of each of the downlink frequency bands; and the carrier configuration information is used to instruct the terminal to receive downlink data in the target downlink frequency band within a carrier configuration time length; the carrier configuration time length is determined by the network device according to the mobile speed information; the carrier configuration time length is negatively related to the mobile speed.

[0021] In a third aspect, the present application further provides a carrier configuration system, including: a network device, a terminal;

[0022] The network device is configured to send reference signals to the terminal on each downlink frequency band.

[0023] The terminal is configured to receive the reference signals; measure channel quality of each of the downlink frequency bands according to the reference signals of each of the downlink frequency bands, to obtain channel state information of each of the downlink frequency bands; obtain measurement feedback information according to the channel state information of each of the downlink frequency bands; and send the measurement feedback information to the network device.

[0024] The network device is further configured to receive the measurement feedback information; obtain channel state information of each of the downlink frequency bands according to the measurement feedback information; determine a target downlink frequency band from each of the downlink frequency bands according to the channel state information of each of the downlink frequency bands; and send carrier configuration information to the terminal according to the target downlink frequency band; the carrier configuration information is used to instruct the terminal to receive downlink data in the target downlink frequency band.

[0025] The terminal is further configured to receive the carrier configuration information.

[0026] In a fourth aspect, the present application further provides a carrier configuration device, including:

[0027] A first sending module is configured to send reference signals to a terminal on each downlink frequency band.

[0028] An information receiving module is configured to receive measurement feedback information sent by the terminal.

[0029] a state obtaining module, configured to obtain channel state information of each of the downlink frequency bands according to the measurement feedback information; the channel state information is obtained by the terminal according to measurement of channel quality of the downlink frequency bands by the reference signals;

[0030] a target determining module, configured to determine a target downlink frequency band from the downlink frequency bands according to the channel state information of each of the downlink frequency bands;

[0031] a second sending module, configured to send carrier configuration information to the terminal according to the target downlink frequency band; the carrier configuration information is used to instruct the terminal to receive downlink data in the target downlink frequency band.

[0032] In a fifth aspect, the present application further provides a carrier configuration device, comprising:

[0033] a first receiving module, configured to receive reference signals sent by a network device on each of downlink frequency bands;

[0034] a quality measuring module, configured to measure channel quality of each of the downlink frequency bands according to the reference signals of each of the downlink frequency bands, and obtain channel state information of each of the downlink frequency bands;

[0035] a feedback obtaining module, configured to obtain measurement feedback information according to the channel state information of each of the downlink frequency bands;

[0036] a feedback sending module, configured to send the measurement feedback information to the network device;

[0037] a second receiving module, configured to receive carrier configuration information sent by the network device; the carrier configuration information is used to instruct to receive downlink data in a target downlink frequency band; the target downlink frequency band is determined by the network device from each of the downlink frequency bands according to the channel state information of each of the downlink frequency bands.

[0038] In a sixth aspect, the present application further provides a communication device, comprising a memory and a processor, the memory stores a computer program, and the processor realizes the following steps when executing the computer program:

[0039] sending reference signals to a terminal on each of downlink frequency bands;

[0040] receiving measurement feedback information sent by the terminal;

[0041] obtaining channel state information of each of the downlink frequency bands according to the measurement feedback information; the channel state information is obtained by the terminal according to measurement of channel quality of the downlink frequency bands by the reference signals;

[0042] determining a target downlink frequency band from the downlink frequency bands according to the channel state information of the downlink frequency bands;

[0043] sending, to the terminal, carrier configuration information according to the target downlink frequency band; the carrier configuration information is used to instruct the terminal to receive downlink data in the target downlink frequency band.

[0044] In a seventh aspect, the present application provides a communication device, comprising a memory and a processor, the memory stores a computer program, and the processor implements the following steps when executing the computer program:

[0045] receiving reference signals sent by a network device in downlink frequency bands;

[0046] measuring channel qualities of the downlink frequency bands according to the reference signals of the downlink frequency bands, to obtain channel state information of the downlink frequency bands;

[0047] obtaining measurement feedback information according to the channel state information of the downlink frequency bands;

[0048] sending the measurement feedback information to the network device;

[0049] receiving carrier configuration information sent by the network device; the carrier configuration information is used to instruct to receive downlink data in a target downlink frequency band; the target downlink frequency band is determined by the network device from the downlink frequency bands according to the channel state information of the downlink frequency bands.

[0050] In an eighth aspect, the present application provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the following steps:

[0051] sending reference signals to a terminal in downlink frequency bands;

[0052] receiving measurement feedback information sent by the terminal;

[0053] obtaining channel state information of the downlink frequency bands according to the measurement feedback information; the channel state information is obtained by the terminal according to channel quality measurement of the downlink frequency bands based on the reference signals;

[0054] determining a target downlink frequency band from the downlink frequency bands according to the channel state information of the downlink frequency bands;

[0055] sending, to the terminal, carrier configuration information according to the target downlink frequency band; the carrier configuration information is used to instruct the terminal to receive downlink data in the target downlink frequency band.

[0056] In a ninth aspect, the present application provides a computer readable storage medium, having stored thereon a computer program, which, when executed by a processor, implements the following steps:

[0057] receiving reference signals transmitted by a network device on each of the downlink frequency bands;

[0058] measuring channel quality of each of the downlink frequency bands according to the reference signals of each of the downlink frequency bands, to obtain channel state information of each of the downlink frequency bands;

[0059] obtaining measurement feedback information according to the channel state information of each of the downlink frequency bands;

[0060] sending the measurement feedback information to the network device;

[0061] receiving carrier configuration information transmitted by the network device; the carrier configuration information is used to instruct the terminal to receive downlink data on a target downlink frequency band; the target downlink frequency band is determined by the network device from each of the downlink frequency bands according to the channel state information of each of the downlink frequency bands.

[0062] In a tenth aspect, the present application provides a computer program product, comprising a computer program, which, when executed by a processor, implements the following steps:

[0063] sending reference signals to a terminal on each of the downlink frequency bands;

[0064] receiving measurement feedback information transmitted by the terminal;

[0065] obtaining channel state information of each of the downlink frequency bands according to the measurement feedback information; the channel state information is obtained by the terminal according to channel quality measurement of the downlink frequency bands by the reference signals;

[0066] determining a target downlink frequency band from each of the downlink frequency bands according to the channel state information of each of the downlink frequency bands;

[0067] sending carrier configuration information to the terminal according to the target downlink frequency band; the carrier configuration information is used to instruct the terminal to receive downlink data on the target downlink frequency band.

[0068] In an eleventh aspect, the present application provides a computer program product, comprising a computer program, which, when executed by a processor, implements the following steps:

[0069] receiving reference signals transmitted by a network device on each of the downlink frequency bands;

[0070] measuring channel quality of each of the downlink frequency bands according to the reference signals of each of the downlink frequency bands, to obtain channel state information of each of the downlink frequency bands;

[0071] obtain measurement feedback information according to the channel state information of each of the downlink frequency bands;

[0072] send the measurement feedback information to the network device;

[0073] receive carrier configuration information sent by the network device; the carrier configuration information is used to instruct the terminal to receive downlink data in a target downlink frequency band; the target downlink frequency band is determined by the network device from each of the downlink frequency bands according to the channel state information of each of the downlink frequency bands.

[0074] The carrier configuration method, device, system, communication device, computer readable storage medium and computer program product, send reference signals to the terminal on each of the downlink frequency bands and receive measurement feedback information sent by the terminal, then obtain channel state information of each of the downlink frequency bands according to the measurement feedback information, wherein the channel state information is obtained by the terminal according to the measurement of the channel quality of the downlink frequency bands by the reference signals, subsequently determine a target downlink frequency band from each of the downlink frequency bands according to the channel state information of each of the downlink frequency bands, and send carrier configuration information to the terminal according to the target downlink frequency band, wherein the carrier configuration information is used to instruct the terminal to receive downlink data in the target downlink frequency band. This scheme, by sending reference signals to the terminal on each of the downlink frequency bands by the network device when performing downlink carrier configuration, measuring the channel quality of each of the downlink frequency bands by the terminal and reporting measurement feedback information, then determining a target downlink frequency band from multiple downlink frequency bands according to the measurement feedback information, can select the target downlink frequency band most suitable for downlink data transmission according to the channel quality of each of the downlink frequency bands in the actual transmission environment and complete the configuration of the carrier, and make the terminal receive downlink data in the target downlink frequency band according to the carrier configuration information, realize high adaptation between carrier configuration and actual transmission environment, and help improve the overall performance of the system. BRIEF DESCRIPTION OF DRAWINGS

[0075] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the drawings needed to be used in the description of the embodiments of the present application or the related art will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other related drawings without creative labor on the basis of these drawings.

[0076] Figure 1 a structural schematic diagram of a carrier configuration system in an embodiment;

[0077] Figure 2 a schematic diagram of carrier aggregation in an embodiment;

[0078] Figure 3A flowchart of a carrier configuration method in one embodiment;

[0079] Figure 4 A flowchart of a carrier configuration method in another embodiment;

[0080] Figure 5 A block diagram of a carrier configuration apparatus in one embodiment;

[0081] Figure 6 A block diagram of a carrier configuration apparatus in another embodiment;

[0082] Figure 7 An internal structure diagram of a communication device in one embodiment;

[0083] Figure 8 An internal structure diagram of a communication device in another embodiment. DETAILED DESCRIPTION

[0084] In order to make the purposes, technical solutions and advantages of the present application clearer, further detailed description will be made to the present application in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0085] It should be noted that the terms “first”, “second”, and the like used in the present application can be used to describe various objects, but these objects are not limited by these terms. These terms are only used to distinguish the first object from the second object. The terms “include” and “have” used in the present application and any variations thereof are intended to cover non-exclusive inclusion. The term “multiple” used in the present application refers to two or more. The term “and / or” used in the present application refers to one of the options or any combination of multiple options.

[0086] Specifically, in a low band carrier aggregation via switching scenario, a network device can support multiple cells, each of which can correspond to a specific carrier, and the network device can guide a terminal device to perform carrier switching by configuring a carrier switching pattern. The terminal device can switch between different cells according to the configuration of the network side to use different carrier wireless resources at different time, thereby comprehensively utilizing the spectrum resources of multiple frequency bands and improving the data transmission capability. However, the carrier switching pattern in the related art usually configures fixed residence time and switching sequence for different cells, and the terminal device needs to switch to different cells according to the predetermined timing sequence. However, since the switching timing sequence does not consider the influence of channel quality, terminal state and other factors in carrier switching, it is difficult to fully utilize the resources in the actual wireless transmission environment.

[0087] In one example embodiment, as shown in Figure 1 A carrier configuration system is provided, which can include a network device and a terminal. The network device can be a device with wireless transceiving function, such as a base station, a relay station, an access point, etc. The terminal can be a wireless terminal, which can be a device providing voice and / or other service data connectivity to a user, or a handheld device with wireless connection function, or other processing device connected to a wireless modem. The wireless terminal can be, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers, unmanned aerial vehicles, low-altitude aerial vehicles, Internet of Things devices, and portable wearable devices, etc.

[0088] The network device can be configured to send reference signals to the terminal on each of the downlink frequency bands.

[0089] Specifically, the downlink frequency bands can be frequency ranges of downlink carriers corresponding to cells supported by the terminal, and the number of downlink frequency bands can be multiple. The network device can send reference signals to the terminal on different downlink frequency bands respectively.

[0090] For example, the terminal can support multiple cells, including a primary cell (PCell) and at least one secondary cell (SCell), each of which can correspond to a downlink carrier. The terminal can initially connect to the network device through the primary cell. The network device can send control information to the terminal through the downlink carrier corresponding to the primary cell, which can be used to instruct the terminal to switch to different cells according to a predetermined timing sequence in a preset time period. The network device can send reference signals to the terminal on the downlink carriers corresponding to the cells where the terminal is located according to the predetermined timing sequence.

[0091] The terminal can be configured to receive the reference signals, measure the channel quality of each downlink frequency band according to the reference signals of each downlink frequency band to obtain channel state information of each downlink frequency band, obtain measurement feedback information according to the channel state information of each downlink frequency band, and send the measurement feedback information to the network device.

[0092] For example, the terminal can receive the reference signals sent by the network device on different downlink frequency bands (i.e. downlink carriers) respectively, and measure the channel quality of the corresponding downlink frequency band according to the reference signals to obtain the channel state information of each downlink frequency band. For example, the terminal can measure the signal-to-noise ratio and other parameters using the reference signals, and obtain the channel quality indication (CQI) of the downlink frequency band according to the measurement results, which can then be used as the channel state information of the downlink frequency band.

[0093] The terminal can send the measurement feedback information containing the channel state information to the network device after obtaining the channel state information of the downlink frequency band. For example, the terminal can send the measurement feedback information to the network device through the uplink carrier corresponding to the primary cell. For example, the terminal can send the measurement feedback information containing the channel state information of each downlink frequency band to the network device after completing the channel quality measurement of all downlink frequency bands, or send the measurement feedback information containing the channel state information of one downlink frequency band to the network device after completing the channel quality measurement of the downlink frequency band.

[0094] The network device can also be configured to receive the measurement feedback information, obtain the channel state information of each downlink frequency band according to the measurement feedback information, determine the target downlink frequency band from the downlink frequency bands according to the channel state information of each downlink frequency band, and send the carrier configuration information to the terminal according to the target downlink frequency band. The carrier configuration information is used to instruct the terminal to receive downlink data in the target downlink frequency band.

[0095] The network device can receive the measurement feedback information sent by the terminal and obtain the channel state information of each downlink frequency band according to the measurement feedback information. Then, the network device can select the downlink frequency band most suitable for downlink data transmission in the current scenario as the target downlink frequency band according to the channel state information of each downlink frequency band, and obtain the carrier configuration information according to the target downlink frequency band. The carrier configuration information can be used to instruct the terminal to receive downlink data in the target downlink frequency band within a preset time period.

[0096] For example, the network device can send the carrier configuration information to the terminal through the downlink carrier corresponding to the primary cell.

[0097] The terminal can also be configured to receive the carrier configuration information.

[0098] The terminal can receive the carrier configuration information sent by the network device, and receive downlink data in the target downlink frequency band within a corresponding time period according to the carrier configuration information.

[0099] The above carrier configuration system can select the target downlink frequency band most suitable for downlink data transmission according to the channel quality of each downlink frequency band in the actual transmission environment, complete the configuration of the carrier, and make the terminal receive downlink data in the target downlink frequency band according to the carrier configuration information, so as to realize the high adaptation between the carrier configuration and the actual transmission environment, and improve the overall performance of the system.

[0100] In an example embodiment, the terminal is further configured to obtain the moving speed information; obtain the measurement feedback information according to the moving speed information and the channel state information of each downlink frequency band; the network device is further configured to obtain the moving speed information of the terminal according to the measurement feedback information; determine the carrier configuration duration of the terminal according to the moving speed information; wherein the carrier configuration duration is negatively related to the moving speed of the terminal; send the carrier configuration information to the terminal according to the target downlink frequency band and the carrier configuration duration; the carrier configuration information is used to instruct the terminal to receive downlink data in the target downlink frequency band within the carrier configuration duration.

[0101] Specifically, the terminal can be configured with a speed measurement module, which can measure the moving speed of the terminal itself and obtain the moving speed information. After obtaining the moving speed information of the terminal itself and obtaining the channel state information of each downlink frequency band, the terminal can obtain the measurement feedback information containing these information and send the measurement feedback information to the network device.

[0102] The network device can obtain the moving speed information of the terminal and the channel state information of each downlink frequency band according to the received measurement feedback information. The network device can determine the carrier configuration duration corresponding to the terminal according to the moving speed information of the terminal, which can be used to indicate the length of time for the terminal to receive downlink data in the target downlink frequency band. The carrier configuration duration can be negatively related to the moving speed of the terminal, i.e. the faster the moving speed of the terminal, the shorter the corresponding carrier configuration duration.

[0103] For example, as the moving speed of the terminal increases, the carrier configuration duration can be set in a stepwise decreasing manner. For example, the carrier configuration duration can be represented by the number of symbols, when the moving speed is greater than or equal to 0 and less than a first speed threshold, the carrier configuration duration can be set to a first symbol number; when the moving speed is greater than or equal to the first speed threshold and less than a second speed threshold, the carrier configuration duration can be set to a second symbol number; when the moving speed is greater than or equal to the second speed threshold, the carrier configuration duration can be set to a third symbol number. The second speed threshold is greater than the first speed threshold, and the first symbol number, the second symbol number and the third symbol number decrease in turn.

[0104] The network device can obtain the carrier configuration information of the terminal according to the target downlink frequency band and the carrier configuration duration after determining the carrier configuration duration and the target downlink frequency band. The carrier configuration information can be used to instruct the terminal to receive downlink data in the target downlink frequency band within the carrier configuration duration. After the end of the carrier configuration duration, the carrier can be configured again.

[0105] In this embodiment, by feeding back the moving speed information of the terminal to the network device, the network device can determine the carrier configuration duration according to the moving speed of the terminal. It is considered that the faster the terminal moves, the faster the channel quality of each downlink carrier changes, so by configuring a shorter carrier configuration duration for a terminal that moves faster, more frequent measurement of the channel quality of each downlink carrier can be realized, which is beneficial to determine a target downlink frequency band that is more suitable for the actual transmission environment.

[0106] In one exemplary embodiment, in the process of determining the target downlink frequency band from the downlink frequency bands according to the channel state information of each downlink frequency band, the network device can be specifically configured to: in the case that the channel state information of each downlink frequency band indicates that the channel quality of the downlink frequency band meets the quality condition, obtain the bandwidth information of each downlink frequency band, and obtain the service type information of the terminal; and determine the target downlink frequency band according to the service type information and the bandwidth information of each downlink frequency band.

[0107] Specifically, the network device can determine whether the channel quality of each downlink frequency band meets the quality condition according to the channel state information of each downlink frequency band. The quality condition can be a condition that is set in advance to measure whether the channel quality of the downlink frequency band meets a certain quality requirement. For example, the quality condition can be a threshold value of the channel quality indication (CQI), when the CQI of the downlink frequency band is greater than or equal to the threshold value, it can be determined that the channel quality of the downlink frequency band meets the quality condition, and when the CQI of the downlink frequency band is less than the threshold value, it can be determined that the channel quality of the downlink frequency band does not meet the quality condition.

[0108] In the case that the channel quality of each downlink frequency band meets the quality condition, the network device can obtain the bandwidth information of each downlink frequency band and obtain the service type information of the terminal. The network device can determine the service type corresponding to the current service of the terminal according to the service type information of the terminal, and then determine the bandwidth requirement of the current service of the terminal. For example, the current service of the terminal can include one or more services, and the network device can determine the bandwidth requirement of the current service of the terminal according to the service type of each service. The network device can select a downlink frequency band that can meet the bandwidth requirement from the plurality of downlink frequency bands as the target downlink frequency band according to the bandwidth requirement of the current service and the bandwidth information of each downlink frequency band.

[0109] In this embodiment, in the case that each downlink carrier meets the quality condition, the target downlink frequency band is determined according to the service type information of the terminal and the bandwidth of each downlink carrier, which can avoid resource waste while meeting the data transmission requirement of the current service of the terminal, and is beneficial to improve the spectrum utilization rate.

[0110] In an example embodiment, in the process of determining the target downlink frequency band according to the service type information and the bandwidth information of each downlink frequency band, the network device can be specifically configured to: in a case where the service type information indicates that the current service of the terminal includes high-bandwidth service, determine the target downlink frequency band according to a first downlink frequency band in each downlink frequency band; and in a case where the service type information indicates that the current service of the terminal does not include high-bandwidth service, determine the target downlink frequency band according to a second downlink frequency band in each downlink frequency band; the bandwidth of the second downlink frequency band is smaller than that of the first downlink frequency band.

[0111] Specifically, the current service of the terminal can include one or more services, and the network device can determine the bandwidth requirement of each service according to the service type information of the terminal, and determine whether the current service includes high-bandwidth service. For example, the service type information of the terminal can include the 5th Generation Mobile Communication Technology Quality of Service Identifier (5G QoS Identifier, 5QI) of each service currently performed, and the network device can determine whether there is high-bandwidth service with high bandwidth requirement according to the 5QI of each service. For example, when the 5QI of a service is 6 to 9, the service usually involves the transmission of large-traffic data such as video streaming, so it can be determined that the service is high-bandwidth service.

[0112] In a case where the current service includes high-bandwidth service, the network device can select a first downlink frequency band in each downlink frequency band as the target downlink frequency band, and in a case where the current service does not include high-bandwidth service, the network device can select a second downlink frequency band in each downlink frequency band as the target downlink frequency band. The bandwidth of the first downlink frequency band is greater than that of the second downlink frequency band. For example, when the number of downlink frequency bands is two, the first downlink frequency band can be the frequency band with a larger bandwidth in the two downlink frequency bands, and the second downlink frequency band can be the frequency band with a smaller bandwidth in the two downlink frequency bands; when the number of downlink frequency bands is more than two, the bandwidth of the first downlink frequency band is at least greater than that of the downlink frequency band with the smallest bandwidth, and the bandwidth of the second downlink frequency band is at least smaller than that of the downlink frequency band with the largest bandwidth.

[0113] In the embodiment, in a case where the current service includes high-bandwidth service, the first downlink frequency band is selected as the target downlink frequency band, and in a case where the current service does not include high-bandwidth service, the second downlink frequency band is selected as the target downlink frequency band, which can select the target downlink frequency band according to the actual requirement of the current service, and improve the resource utilization rate while ensuring the service quality.

[0114] In an exemplary embodiment, when determining a target downlink frequency band from each downlink frequency band based on the channel state information of each downlink frequency band, the network device may specifically be used to: determine the target downlink frequency band based on the downlink frequency band with the highest channel quality when the channel state information of at least one downlink frequency band indicates that the channel quality of the downlink frequency band does not meet the quality conditions.

[0115] Specifically, network devices can determine whether the channel quality of each downlink frequency band meets quality conditions based on the channel state information of each downlink frequency band. These quality conditions can be pre-set criteria used to measure whether the channel quality of the downlink frequency band meets specific quality requirements. For example, the quality condition can be a threshold for Channel Quality Indication (CQI). When the CQI of a downlink frequency band is greater than or equal to the threshold, it can be determined that the channel quality of that downlink frequency band meets the quality conditions; conversely, when the CQI of a downlink frequency band is less than the threshold, it can be determined that the channel quality of that downlink frequency band does not meet the quality conditions.

[0116] Specifically, if it is determined that at least one downlink frequency band in each downlink frequency band does not meet the quality conditions, the network device may select the downlink frequency band with the highest channel quality as the target downlink frequency band. For example, the target downlink frequency band may be the downlink frequency band with the highest CQI.

[0117] In this embodiment, when the channel quality of at least one downlink frequency band does not meet the quality conditions, the downlink frequency band with the highest channel quality is taken as the target downlink frequency band, which is beneficial to ensuring the service quality of terminal services.

[0118] The following example illustrates the processing procedure of a carrier configuration system in a specific carrier configuration scenario.

[0119] Specifically, such as Figure 2 As shown, the cells supported by the terminal can include primary cells and secondary cells. A primary cell can correspond to a primary cell uplink carrier and a primary cell downlink carrier, and a secondary cell can correspond to a secondary cell downlink carrier. The primary cell uplink carrier and primary cell downlink carrier can be located in a first frequency band (e.g., the n5 band), and the secondary cell downlink carrier can be located in a second frequency band (e.g., the n29 band).

[0120] The carrier configuration system can perform carrier configuration in a period that includes a decision part and a transmission part. The duration of the decision part can be a fixed value (e.g., X symbols), and the duration of the transmission part can be represented as Y symbols, where the value of Y can be determined in the decision part.

[0121] Specifically, the carrier configuration system can perform carrier configuration in the decision section:

[0122] The network device can send downlink reference signals to the terminal on each downlink frequency band (i.e. the primary cell downlink carrier and the secondary cell downlink carrier).

[0123] The terminal can receive the downlink reference signals and measure the channel quality of the primary cell downlink carrier and the secondary cell downlink carrier respectively according to the downlink reference signals to obtain the corresponding channel state information (e.g. CQI). Meanwhile, the terminal can measure its own moving speed to obtain the moving speed information. Then, the terminal can send measurement feedback information containing the moving speed information and the channel state information of each downlink carrier to the network device on the primary cell uplink carrier.

[0124] The network device can receive the measurement feedback information and obtain the channel state information of each downlink carrier and the moving speed information of the terminal.

[0125] The network device can determine the carrier configuration duration (i.e. the duration of the transmission part) according to the moving speed information of the terminal. The carrier configuration duration is negatively related to the moving speed of the terminal: when the moving speed is greater than or equal to 0 km / h and less than 100 km / h, Y can take the value of 100; when the moving speed is greater than or equal to 100 km / h and less than 300 km / h, Y can take the value of 50; when the moving speed is greater than or equal to 300 km / h, Y can take the value of 20.

[0126] The network device can determine the target downlink carrier (i.e., the target downlink frequency range) according to the channel state information of each downlink carrier. For example, the channel state information of the downlink carrier can include the CQI of the downlink carrier. The network device can determine that the channel quality of the downlink carrier satisfies the quality condition when the CQI corresponding to the downlink carrier is greater than or equal to a preset threshold (for example, 12), and determine that the channel quality of the downlink carrier does not satisfy the quality condition when the CQI corresponding to the downlink carrier is less than the preset threshold. When the channel quality of the primary downlink carrier and the secondary downlink carrier does not satisfy the quality condition, the downlink carrier with a larger CQI value can be selected as the target downlink carrier. When the channel quality of the primary downlink carrier and the secondary downlink carrier satisfies the quality condition, the bandwidth information of the two downlink carriers and the service type information of the terminal can be obtained, and the target downlink carrier can be determined according to the two. For example, the service type information of the terminal can include the 5QI of the service currently performed by the terminal. When the current service of the terminal includes services with 5QI from 6 to 9, it can be determined that the current service of the terminal includes high-bandwidth services, and the downlink carrier with a larger bandwidth can be selected as the target downlink carrier from the primary downlink carrier and the secondary downlink carrier. When the current service of the terminal does not include high-bandwidth services, the downlink carrier with a smaller bandwidth can be selected as the target downlink carrier from the primary downlink carrier and the secondary downlink carrier.

[0127] The network device can obtain the carrier configuration information corresponding to the terminal after determining the carrier configuration duration and the target downlink carrier. The carrier configuration information is used to instruct the terminal to receive downlink data on the target downlink carrier within the carrier configuration duration. Then, the network device can send the carrier configuration information to the terminal.

[0128] The terminal can receive the carrier configuration information and receive downlink data on the target downlink carrier within the carrier configuration duration (i.e., the transmission part) according to the configuration. After the end of the carrier configuration duration (i.e., the end of the transmission part), the terminal can enter the decision part again.

[0129] In this embodiment, the terminal completes the measurement and reporting of the channel quality of the downlink channel and its own speed information. The network device configures the target downlink carrier according to the CQI and speed information fed back by the terminal, and the service type information of the terminal, and completes the transmission of downlink data according to the configuration. This can effectively improve the matching of carrier switching to the actual transmission environment and improve the overall performance of the system.

[0130] Based on the same inventive concept, the embodiments of the present application also provide a carrier configuration method. The implementation solution of the problem provided by the method is similar to the implementation solution described in the system embodiments above. Therefore, the specific definitions in one or more carrier configuration method embodiments provided below can refer to the definitions of the carrier configuration system above, and will not be repeated here.

[0131] In one embodiment, as shown in Figure 3 a carrier configuration method is provided. The present embodiment is exemplified by the method being applied to a network device. In the present embodiment, the method comprises the following steps:

[0132] Step S301: transmitting reference signals to a terminal on each downlink frequency band.

[0133] Step S302: receiving measurement feedback information transmitted by the terminal.

[0134] Step S303: obtaining channel state information of each downlink frequency band according to the measurement feedback information. The channel state information is obtained by the terminal according to the measurement of the channel quality of the downlink frequency band based on the reference signals.

[0135] Step S304: determining a target downlink frequency band from each downlink frequency band according to the channel state information of each downlink frequency band.

[0136] Step S305: transmitting carrier configuration information to the terminal according to the target downlink frequency band; the carrier configuration information is used to instruct the terminal to receive downlink data on the target downlink frequency band.

[0137] In one exemplary embodiment, after receiving the measurement feedback information transmitted by the terminal, the method further comprises: obtaining the moving speed information of the terminal according to the measurement feedback information; determining the carrier configuration duration of the terminal according to the moving speed information; wherein the carrier configuration duration is negatively related to the moving speed of the terminal; and transmitting the carrier configuration information to the terminal according to the target downlink frequency band, which comprises: transmitting the carrier configuration information to the terminal according to the target downlink frequency band and the carrier configuration duration; the carrier configuration information is used to instruct the terminal to receive downlink data on the target downlink frequency band within the carrier configuration duration.

[0138] In one exemplary embodiment, determining the target downlink frequency band from each downlink frequency band according to the channel state information of each downlink frequency band comprises: in the case that the channel state information of each downlink frequency band all indicates that the channel quality of the downlink frequency band meets the quality condition, obtaining the bandwidth information of each downlink frequency band and obtaining the service type information of the terminal; and determining the target downlink frequency band according to the service type information and the bandwidth information of each downlink frequency band.

[0139] In an example embodiment, the target downlink frequency band is determined according to the service type information and the bandwidth information of each downlink frequency band, including: in a case where the service type information indicates that the current service of the terminal includes high-bandwidth service, determining the target downlink frequency band according to a first downlink frequency band in each downlink frequency band; and in a case where the service type information indicates that the current service of the terminal does not include high-bandwidth service, determining the target downlink frequency band according to a second downlink frequency band in each downlink frequency band; the bandwidth of the second downlink frequency band is less than the first downlink frequency band.

[0140] In an example embodiment, the target downlink frequency band is determined from each downlink frequency band according to the channel state information of each downlink frequency band, including: in a case where the channel state information of at least one downlink frequency band indicates that the channel quality of the downlink frequency band does not satisfy a quality condition, determining the target downlink frequency band according to a downlink frequency band with the highest channel quality.

[0141] In an example embodiment, as shown in Figure 4 A carrier configuration method is provided, and the embodiment is exemplified by the method applied to a terminal. The method includes the following steps in the embodiment:

[0142] In step S401, a reference signal transmitted by a network device on each downlink frequency band is received.

[0143] In step S402, the channel quality of each downlink frequency band is measured according to the reference signal of each downlink frequency band, and the channel state information of each downlink frequency band is obtained.

[0144] In step S403, the measurement feedback information is obtained according to the channel state information of each downlink frequency band.

[0145] In step S404, the measurement feedback information is transmitted to the network device.

[0146] In step S405, carrier configuration information transmitted by the network device is received; the carrier configuration information is used to indicate that downlink data is received on a target downlink frequency band; the target downlink frequency band is determined from each downlink frequency band by the network device according to the channel state information of each downlink frequency band.

[0147] In an example embodiment, the measurement feedback information is obtained according to the channel state information of each downlink frequency band, including: obtaining the moving speed information; obtaining the measurement feedback information according to the moving speed information and the channel state information of each downlink frequency band; the carrier configuration information is used to indicate that downlink data is received on the target downlink frequency band within a carrier configuration duration; the carrier configuration duration is determined by the network device according to the moving speed information; and the carrier configuration duration is negatively related to the moving speed.

[0148] It should be understood that although each step in the flowchart involved in the above-described embodiments is shown in sequence according to the arrow, the steps are not necessarily executed in the order indicated by the arrow. Unless otherwise specified herein, the execution of the steps is not strictly limited in sequence, and the steps can be executed in other sequences. Moreover, at least some of the steps in the flowchart involved in the above-described embodiments can include multiple steps or multiple stages, which are not necessarily executed at the same time but can be executed at different times, and the execution of the steps or stages is not necessarily sequential but can be executed alternately or alternately with at least some of the other steps or steps or stages in other steps. It can be understood that the steps in different embodiments can be freely combined as needed, and various non-contradictory schemes formed by the combination are within the scope of protection of the present application.

[0149] Based on the same inventive concept, the embodiments of the present application also provide a carrier configuration device for implementing the above-mentioned carrier configuration method. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme described in the above method, so the specific limitations in one or more carrier configuration device embodiments provided below can refer to the limitations of the carrier configuration method described above, which will not be repeated here.

[0150] In one exemplary embodiment, as shown in Figure 5 a carrier configuration device is provided, comprising:

[0151] The first sending module 501 is configured to send reference signals to a terminal on each downlink frequency band.

[0152] The information receiving module 502 is configured to receive measurement feedback information sent by the terminal.

[0153] The state obtaining module 503 is configured to obtain channel state information of each downlink frequency band according to the measurement feedback information; the channel state information is obtained by the terminal according to the measurement of the channel quality of the downlink frequency band based on the reference signal.

[0154] The target determining module 504 is configured to determine a target downlink frequency band from each downlink frequency band according to the channel state information of each downlink frequency band.

[0155] The second sending module 505 is configured to send carrier configuration information to the terminal according to the target downlink frequency band; the carrier configuration information is used to instruct the terminal to receive downlink data on the target downlink frequency band.

[0156] In an exemplary embodiment, the apparatus further comprises: a speed obtaining module, configured to obtain the moving speed information of the terminal according to the measurement feedback information; a time length configuring module, configured to determine the carrier configuration time length of the terminal according to the moving speed information, wherein the carrier configuration time length is negatively related to the moving speed of the terminal; and a second sending module 505, configured to send carrier configuration information to the terminal according to the target downlink frequency band and the carrier configuration time length, wherein the carrier configuration information is used to instruct the terminal to receive downlink data in the target downlink frequency band within the carrier configuration time length.

[0157] In an exemplary embodiment, the target determining module 504 is configured to: in a case where the channel state information of each of the downlink frequency bands indicates that the channel quality of the downlink frequency band satisfies the quality condition, obtain the bandwidth information of each of the downlink frequency bands, and obtain the service type information of the terminal; and determine the target downlink frequency band according to the service type information and the bandwidth information of each of the downlink frequency bands.

[0158] In an exemplary embodiment, the target determining module 504 is configured to: in a case where the service type information indicates that the current service of the terminal includes high-bandwidth service, determine the target downlink frequency band according to a first downlink frequency band in each of the downlink frequency bands; and in a case where the service type information indicates that the current service of the terminal does not include high-bandwidth service, determine the target downlink frequency band according to a second downlink frequency band in each of the downlink frequency bands, wherein the bandwidth of the second downlink frequency band is smaller than that of the first downlink frequency band.

[0159] In an exemplary embodiment, the target determining module 504 is configured to: in a case where the channel state information of at least one of the downlink frequency bands indicates that the channel quality of the downlink frequency band does not satisfy the quality condition, determine the target downlink frequency band according to the downlink frequency band with the highest channel quality.

[0160] In an exemplary embodiment, as shown in Figure 6 there is provided a carrier configuration apparatus, comprising:

[0161] A first receiving module 601 is configured to receive reference signals sent by a network device on each downlink frequency band.

[0162] A quality measuring module 602 is configured to measure the channel quality of each of the downlink frequency bands according to the reference signals of each of the downlink frequency bands, and obtain channel state information of each of the downlink frequency bands.

[0163] A feedback obtaining module 603 is configured to obtain measurement feedback information according to the channel state information of each of the downlink frequency bands.

[0164] The feedback sending module 604 is configured to send the measurement feedback information to the network device.

[0165] The second receiving module 605 is configured to receive carrier configuration information sent by the network device, wherein the carrier configuration information is used to indicate that downlink data is received in a target downlink frequency band, and the target downlink frequency band is determined by the network device from each of the downlink frequency bands according to the channel state information of each of the downlink frequency bands.

[0166] In an exemplary embodiment, the feedback obtaining module 603 is configured to obtain movement speed information, and obtain measurement feedback information according to the movement speed information and the channel state information of each of the downlink frequency bands, and the carrier configuration information is used to indicate that downlink data is received in the target downlink frequency band within a carrier configuration time length, and the carrier configuration time length is determined by the network device according to the movement speed information, and the carrier configuration time length is negatively related to the movement speed.

[0167] Each of the modules in the above carrier configuration apparatus can be realized by software, hardware and a combination thereof in whole or in part. Each of the modules can be embedded in or independent of a processor in a communication device in hardware form, or can be stored in a memory in a communication device in software form, so as to be called and executed by a processor to perform operations corresponding to each of the modules.

[0168] In an exemplary embodiment, a communication device, which can be a network device, has an internal structure diagram as shown in Figure 7 The communication device includes a processor, a memory, an input / output interface (I / O) and a communication interface. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the communication device is configured to provide calculation and control capabilities. The memory of the communication device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operating system and the computer program in the non-volatile storage medium to run. The input / output interface of the communication device is configured to exchange information between the processor and external devices. The communication interface of the communication device is configured to communicate with external terminals. The computer program is executed by the processor to implement a carrier configuration method.

[0169] In an exemplary embodiment, a communication device, which can be a terminal, has an internal structure diagram as shown in Figure 8The communication device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input / output interface. The processor of the communication device is configured to provide computing and control capabilities. The memory of the communication device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operating system and the computer program in the non-volatile storage medium to run. The input / output interface of the communication device is configured to exchange information between the processor and external devices. The communication interface of the communication device is configured to perform wired or wireless communication with external terminals. The wireless communication can be achieved through WIFI, mobile cellular network, Near Field Communication (NFC) or other technologies. The computer program is executed by the processor to implement a carrier configuration method. The display unit of the communication device is configured to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen. The input device of the communication device can be a touch layer overlaid on the display screen, or a key, trackball or touchpad arranged on the shell of the communication device, or an external keyboard, touchpad or mouse, etc.

[0170] Those skilled in the art can understand that Figure 7 or Figure 8 The structure shown in the above embodiments is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the communication device to which the scheme of the present application is applied. The specific communication device can include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0171] In one embodiment, a communication device is also provided, including a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the steps in the above method embodiments.

[0172] In one embodiment, a computer readable storage medium is provided, storing a computer program, and the computer program is executed by a processor to implement the steps in the above method embodiments.

[0173] In one embodiment, a computer program product is provided, including a computer program, and the computer program is executed by a processor to implement the steps in the above method embodiments.

[0174] It should be noted that the user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application are all information and data authorized by the user or authorized by all parties, and the collection, use and processing of related data need to comply with relevant regulations.

[0175] It can be understood by those skilled in the art that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing related hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium. When the computer program is executed, it can include the processes of the above-mentioned embodiments of each method. In the embodiments provided in the present application, any reference to memory, database or other medium can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical storage, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration but not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The database involved in the embodiments provided in the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on a block chain, etc., without being limited thereto. The processor involved in the embodiments provided in the present application can be a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., without being limited thereto.

[0176] Any technical features in the above embodiments can be combined, and for the sake of brevity, not all possible combinations are described above, however, any combination of these technical features is deemed to be within the scope of the present application.

[0177] The above embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be pointed out that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A carrier configuration method, comprising: The method comprises: sending reference signals to a terminal on each downlink frequency band; receiving measurement feedback information sent by the terminal; obtaining channel state information of each downlink frequency band according to the measurement feedback information; the channel state information is obtained by the terminal according to the reference signals to measure the channel quality of the downlink frequency band; determining a target downlink frequency band from each downlink frequency band according to the channel state information of each downlink frequency band; sending carrier configuration information to the terminal according to the target downlink frequency band; the carrier configuration information is used to instruct the terminal to receive downlink data on the target downlink frequency band.

2. The method of claim 1, wherein, After receiving the measurement feedback information sent by the terminal, the method further comprises: obtaining the moving speed information of the terminal according to the measurement feedback information; determining the carrier configuration time length of the terminal according to the moving speed information; wherein the carrier configuration time length is negatively related to the moving speed of the terminal; The method further comprises: sending carrier configuration information to the terminal according to the target downlink frequency band and the carrier configuration time length; the carrier configuration information is used to instruct the terminal to receive downlink data on the target downlink frequency band within the carrier configuration time length.

3. The method of claim 1, wherein, The method further comprises: in the case that the channel state information of each downlink frequency band indicates that the channel quality of the downlink frequency band meets the quality condition, obtaining the bandwidth information of each downlink frequency band, and obtaining the service type information of the terminal; determining the target downlink frequency band according to the service type information and the bandwidth information of each downlink frequency band.

4. The method of claim 3, wherein, The method further comprises: in the case that the service type information indicates that the current service of the terminal includes high-bandwidth service, determining the target downlink frequency band according to a first downlink frequency band in each downlink frequency band; in the case that the service type information indicates that the current service of the terminal does not include high-bandwidth service, determining the target downlink frequency band according to a second downlink frequency band in each downlink frequency band; the bandwidth of the second downlink frequency band is smaller than that of the first downlink frequency band.

5. The method of claim 1, wherein, The method further comprises: in the case that the channel state information of at least one downlink frequency band indicates that the channel quality of the downlink frequency band does not meet the quality condition, determining the target downlink frequency band according to the downlink frequency band with the highest channel quality.

6. A carrier configuration method, comprising: The method comprises: receiving reference signals sent by a network device on each downlink frequency band; measuring the channel quality of each downlink frequency band according to the reference signals of each downlink frequency band to obtain channel state information of each downlink frequency band; obtaining measurement feedback information according to the channel state information of each downlink frequency band; sending the measurement feedback information to the network device; receiving carrier configuration information sent by the network device; the carrier configuration information is used to instruct the terminal to receive downlink data in a target downlink frequency band; the target downlink frequency band is determined by the network device from each of the downlink frequency bands according to the channel state information of each of the downlink frequency bands.

7. The method of claim 6, wherein, The measurement feedback information is obtained according to the channel state information of each of the downlink frequency bands, including: obtaining mobile speed information; obtaining measurement feedback information according to the mobile speed information and the channel state information of each of the downlink frequency bands; The carrier configuration information is used to instruct the terminal to receive downlink data in the target downlink frequency band within a carrier configuration time length; the carrier configuration time length is determined by the network device according to the mobile speed information; the carrier configuration time length is negatively correlated with the mobile speed.

8. A carrier configuration system, characterized by The system comprises a network device and a terminal. The network device is configured to send reference signals to the terminal on each downlink frequency band. The terminal is configured to receive the reference signals, measure channel quality of each of the downlink frequency bands according to the reference signals of each of the downlink frequency bands, obtain channel state information of each of the downlink frequency bands, obtain measurement feedback information according to the channel state information of each of the downlink frequency bands, and send the measurement feedback information to the network device. The network device is further configured to receive the measurement feedback information, obtain channel state information of each of the downlink frequency bands according to the measurement feedback information, determine a target downlink frequency band from each of the downlink frequency bands according to the channel state information of each of the downlink frequency bands, send carrier configuration information to the terminal according to the target downlink frequency band, and the carrier configuration information is used to instruct the terminal to receive downlink data in the target downlink frequency band. The terminal is further configured to receive the carrier configuration information.

9. A carrier configuration apparatus, comprising: The apparatus comprises: A first sending module configured to send reference signals to a terminal on each downlink frequency band. An information receiving module configured to receive measurement feedback information sent by the terminal. A state obtaining module configured to obtain channel state information of each of the downlink frequency bands according to the measurement feedback information; the channel state information is obtained by the terminal according to measurement of channel quality of the downlink frequency bands by the reference signals. A target determining module configured to determine a target downlink frequency band from each of the downlink frequency bands according to the channel state information of each of the downlink frequency bands. A second sending module configured to send carrier configuration information to the terminal according to the target downlink frequency band; the carrier configuration information is used to instruct the terminal to receive downlink data in the target downlink frequency band.

10. A carrier configuration apparatus, comprising: The apparatus comprises: A first receiving module configured to receive reference signals sent by a network device on each downlink frequency band. A quality measuring module configured to measure channel quality of each of the downlink frequency bands according to the reference signals of each of the downlink frequency bands, and obtain channel state information of each of the downlink frequency bands. A feedback obtaining module configured to obtain measurement feedback information according to the channel state information of each of the downlink frequency bands. A feedback sending module configured to send the measurement feedback information to the network device. A second receiving module is configured to receive carrier configuration information sent by the network device; the carrier configuration information is used to indicate that downlink data is received in a target downlink frequency band; the target downlink frequency band is determined from each of the downlink frequency bands by the network device according to the channel state information of each of the downlink frequency bands.

11. A communication device comprising a memory and a processor, the memory storing a computer program, characterized in that, The computer program, when executed by the processor, implements the steps of the method of any one of claims 1 to 7.

12. A computer readable storage medium having stored thereon a computer program, characterized in that, The computer program, when executed by the processor, implements the steps of the method of any one of claims 1 to 7.

13. A computer program product comprising a computer program, characterized in that, The computer program, when executed by the processor, implements the steps of the method of any one of claims 1 to 7. The computer program, when executed by the processor, implements the steps of the method of any one of claims 1 to 7.

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