CN112825592B - Carrier scheduling method, device, base station and storage medium - Google Patents

Carrier scheduling method, device, base station and storage medium Download PDF

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Publication number
CN112825592B
CN112825592B CN201911146737.3A CN201911146737A CN112825592B CN 112825592 B CN112825592 B CN 112825592B CN 201911146737 A CN201911146737 A CN 201911146737A CN 112825592 B CN112825592 B CN 112825592B
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carrier
terminal
sul
fdd uplink
base station
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CN112825592A (en
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徐绍君
熊兵
黄伟
王亮
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Chengdu TD Tech Ltd
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Chengdu TD Tech Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management

Abstract

The invention provides a carrier scheduling method, a carrier scheduling device, a base station and a storage medium, wherein the method comprises the following steps: if the base station distributes the SUL carrier to the terminal, evaluating the channel quality of the SUL carrier and the FDD uplink carrier; scheduling the FDD uplink carrier or the FDD uplink carrier and the SUL carrier according to the evaluation result of the channel quality of the SUL carrier and the FDD uplink carrier and the type of the terminal; the types of the terminals comprise a first type and a second type, wherein the first type of terminal supports the aggregation of the FDD uplink carrier and the SUL carrier, and the second type of terminal does not support the aggregation of the FDD uplink carrier and the SUL carrier, so that when the base station performs resource allocation of the SUL frequency band on the terminal, the message sent by the terminal can be normally received by the base station.

Description

Carrier scheduling method, device, base station and storage medium
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a carrier scheduling method, an apparatus, a base station, and a storage medium.
Background
In a Long Term Evolution (LTE) system of the current universal mobile telecommunications technology, a single carrier supports a system bandwidth of 20 megabits (M) at most, and if a larger bandwidth is to be supported, a carrier aggregation technology needs to be adopted. In The 3rd Generation Partnership Project (3 GPP) protocol, aggregation of a maximum of 5 carriers is supported, but The number of downlink carriers is required to be equal to or greater than The number of uplink carriers. In a public network operator network, the general downlink service requirement is greater than the uplink service requirement, and the carrier aggregation defined by 3GPP can better satisfy the operator network. However, in some industry network applications, there are a large number of video monitoring services, and at this time, the uplink service requirement is greater than the downlink service requirement, and in this case, the carrier aggregation scheme defined by 3GPP cannot well meet the requirements of the industry network.
In order to better satisfy a large number of uplink service demand scenarios, an asymmetric carrier aggregation technology in which the number of uplink carriers is greater than the number of downlink carriers needs to be introduced. When the number of uplink carriers is greater than the number of downlink carriers, the uplink carriers may be divided into two types: one type can be used in a pairing way with a downlink carrier as a Frequency Division Duplex (FDD) main carrier; one type exists as a Supplemental Uplink carrier (SUL), and there is no corresponding downlink paired carrier.
In the prior art, in a repeater coverage area, if a base station performs resource allocation of an SUL band on a terminal, since the repeater coverage area does not have SUL band coverage, information sent by the terminal may not be normally received by the base station.
Disclosure of Invention
The invention provides a carrier scheduling method, a carrier scheduling device, a base station and a storage medium, which are used for realizing that information sent by a terminal can be normally received by the base station when the base station performs resource allocation of an SUL frequency band on the terminal.
In a first aspect, an embodiment of the present invention provides a carrier scheduling method, including:
if the base station distributes the SUL carrier to the terminal, evaluating the channel quality of the SUL carrier and the FDD uplink carrier; scheduling the FDD uplink carrier or the FDD uplink carrier and the SUL carrier according to the evaluation result of the channel quality of the SUL carrier and the FDD uplink carrier and the type of the terminal; the types of the terminals comprise a first type and a second type, wherein the first type of terminals support the aggregation of the FDD uplink carrier and the SUL carrier, and the second type of terminals do not support the aggregation of the FDD uplink carrier and the SUL carrier.
In the scheme, the FDD uplink carrier or the FDD uplink carrier and the SUL carrier are scheduled according to the channel quality evaluation results of the SUL carrier and the FDD uplink carrier and the type of the terminal, so that the message sent by the terminal can be normally received by the base station.
Optionally, the scheduling of the FDD uplink carrier, or the FDD uplink carrier and the SUL carrier according to the result of evaluating the channel quality of the SUL carrier and the FDD uplink carrier and the type of the terminal includes:
if the difference value between the channel quality of the FDD uplink carrier and the channel quality of the SUL carrier is greater than a preset threshold value and the type of the terminal is a first type, scheduling the FDD uplink carrier and the SUL carrier or only scheduling the FDD uplink carrier; or, if the difference between the channel quality of the FDD uplink carrier and the channel quality of the SUL carrier is greater than the preset threshold and the type of the terminal is the second type, scheduling the FDD uplink carrier.
Optionally, the estimating the channel quality of the SUL carrier and the FDD uplink carrier includes:
if the base station allocates the FDD uplink carrier and the SUL carrier to the terminal, evaluating the channel quality of the SUL carrier and the channel quality of the FDD uplink carrier by comparing the frequency spectrum efficiency of the FDD uplink carrier and the SUL carrier; or, if the base station allocates only the SUL carrier to the terminal, the channel quality of the SUL carrier and the FDD uplink carrier is evaluated by comparing the path loss of the FDD downlink carrier and the SUL carrier.
Optionally, before comparing the path loss of the FDD downlink carrier and the SUL carrier, the method further includes:
the base station sends a measurement control message to the terminal, wherein the measurement control message is used for indicating the terminal to carry out the path loss test of the FDD downlink carrier and reporting the path loss test result, and the base station obtains the path loss of the FDD uplink carrier according to the path loss test result reported by the terminal; and obtaining the path loss of the SUL carrier according to the Power Headroom Report (PHR) and the total power of the terminal received by the base station.
Optionally, the carrier scheduling method provided by the present invention further includes:
and if the connection between the terminal and the base station on the SUL carrier fails, sending indication information to the terminal, wherein the indication information is used for indicating the terminal and the base station to reestablish the connection on the FDD uplink carrier.
The following are a carrier scheduling apparatus, a base station, a storage medium and a computer program product provided in the embodiments of the present invention, and the contents and effects thereof can refer to the method part, which is not described herein again.
In a second aspect, the present invention provides a carrier scheduling apparatus, including:
the evaluation module is used for evaluating the channel quality of the SUL carrier and the uplink frequency division duplex FDD carrier if the base station allocates the supplementary uplink SUL carrier to the terminal; and the scheduling module is used for scheduling the FDD uplink carrier or the FDD uplink carrier and the SUL carrier according to the evaluation result of the channel quality of the SUL carrier and the FDD uplink carrier and the type of the terminal, wherein the type of the terminal comprises a first type and a second type, the first type of the terminal supports the aggregation of the FDD uplink carrier and the SUL carrier, and the second type of the terminal does not support the aggregation of the FDD uplink carrier and the SUL carrier.
Optionally, the scheduling module is specifically configured to:
if the difference value between the channel quality of the FDD uplink carrier and the channel quality of the SUL carrier is greater than a preset threshold value and the type of the terminal is a first type, scheduling the FDD uplink carrier and the SUL carrier or only scheduling the FDD uplink carrier; or, if the difference between the channel quality of the FDD uplink carrier and the channel quality of the SUL carrier is greater than the preset threshold and the type of the terminal is the second type, scheduling the FDD uplink carrier.
Optionally, the evaluation module is specifically configured to:
if the base station allocates the FDD uplink carrier and the SUL carrier to the terminal, evaluating the channel quality of the SUL carrier and the channel quality of the FDD uplink carrier by comparing the frequency spectrum efficiency of the FDD uplink carrier and the SUL carrier; or, if the base station allocates only the SUL carrier to the terminal, the channel quality of the SUL carrier and the FDD uplink carrier is evaluated by comparing the path loss of the FDD downlink carrier and the SUL carrier.
Optionally, the carrier scheduling apparatus provided in the present invention further includes:
a first obtaining module, configured to send a measurement control message to a terminal by a base station, where the measurement control message is used to instruct the terminal to perform a path loss test on an FDD downlink carrier and report a path loss test result, and the base station obtains a path loss of an FDD uplink carrier according to the path loss test result reported by the terminal; and the second obtaining module is used for obtaining the path loss of the SUL carrier according to the Power Headroom Report (PHR) and the total power of the terminal received by the base station.
Optionally, the carrier scheduling apparatus provided in the present invention further includes:
and the sending module is used for sending indication information to the terminal if the connection between the terminal and the base station on the SUL carrier fails, wherein the indication information is used for indicating the terminal and the base station to reestablish the connection on the FDD uplink carrier.
In a third aspect, an embodiment of the present invention provides a base station, including a processor and a memory; the memory is for storing computer executable instructions to cause the processor to execute the instructions to implement the carrier scheduling method as described in the first aspect or the first aspect alternative above.
In a fourth aspect, the present application provides a computer storage medium comprising computer instructions which, when executed by a computer, cause the computer to implement the carrier scheduling method of the first aspect or the first aspect alternatives.
In a fifth aspect, the present application provides a computer program product comprising computer instructions which, when executed by a computer, cause the computer to implement the first aspect or the carrier scheduling method of the first aspect as an alternative.
The invention provides a carrier scheduling method, a device, a base station and a storage medium, wherein the method comprises the steps of evaluating the channel quality of an SUL carrier and an FDD uplink carrier if the SUL carrier is distributed to a terminal by the base station; scheduling the FDD uplink carrier or the FDD uplink carrier and the SUL carrier according to the evaluation result of the channel quality of the SUL carrier and the FDD uplink carrier and the type of the terminal; the types of the terminals comprise a first type and a second type, wherein the first type of terminals support the aggregation of the FDD uplink carrier and the SUL carrier, and the second type of terminals do not support the aggregation of the FDD uplink carrier and the SUL carrier. In the scheme, the FDD uplink carrier or the FDD uplink carrier and the SUL carrier are scheduled according to the channel quality evaluation results of the SUL carrier and the FDD uplink carrier and the type of the terminal, so that the message sent by the terminal can be normally received by the base station when the base station distributes the SUL carrier to the terminal.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIGS. 1-2 are diagrams of exemplary application scenarios provided by embodiments of the present invention;
fig. 3 is a flowchart illustrating a carrier scheduling method according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating a carrier scheduling method according to another embodiment of the present invention;
fig. 5 is a schematic structural diagram of a carrier scheduling apparatus according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a carrier scheduling apparatus according to another embodiment of the present invention;
fig. 7 is a schematic structural diagram of a base station according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
At present, in some network applications, a large number of video monitoring services exist, and at this time, the uplink service demand is greater than the downlink service demand, and in this case, the carrier aggregation scheme defined by 3GPP cannot well meet the demands of the industry network. In order to better satisfy a large number of uplink service demand scenarios, an asymmetric carrier aggregation technology in which the number of uplink carriers is greater than the number of downlink carriers needs to be introduced. Because the repeater coverage area does not have the SUL coverage, if the base station performs the resource allocation of the SUL band to the terminal in the repeater coverage area, the information sent by the terminal may not be received normally by the base station. In order to solve the above problem, embodiments of the present invention provide a carrier scheduling method, apparatus, base station, and storage medium.
An exemplary implementation scenario in an embodiment of the present invention is described below.
Fig. 1-2 are diagrams of exemplary application scenarios provided by an embodiment of the present invention, and as shown in fig. 1, a base station 1 performs data communication with a terminal 2 in a coverage area 10 of the base station, where the base station 1 may refer to a device in an access network that communicates with a wireless terminal over an air interface through one or more cells. For example, the base station may be a Base Transceiver Station (BTS) in a Global System for Mobile Communication (GSM) or Code Division Multiple Access (CDMA), a base station (NodeB) in a Wideband Code Division Multiple Access (WCDMA), an evolved node b in LTE, or a base station in a subsequent evolved network, which is not limited in this respect. Terminal 2, a device providing voice and/or data connectivity to a user, including a wireless terminal or a wired terminal. The wireless terminal may be a handheld device having wireless connection capabilities, or other processing device connected to a wireless modem, a mobile terminal communicating with one or more core networks via a radio access network. For example, wireless terminals may be mobile telephones (or "cellular" telephones) and computers with mobile terminals. As another example, a wireless terminal may be a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device. For another example, the wireless terminal may be a mobile station (mobile station), an access point (access point), a User Equipment (UE), or the like. In the coverage area 10 of the base station, if the base station 1 performs resource allocation of the SUL band to the terminal 2 under normal conditions, the information transmitted by the terminal 2 can be normally received by the base station. As shown in fig. 2, in order to extend the distance of network transmission, a repeater 3 may be disposed outside a base station coverage area 10, when a terminal 2 is in the repeater coverage area, if a base station 1 performs resource allocation of an SUL frequency band on the terminal 2, data information sent by the terminal 2 may not be normally received by the base station, and therefore, an FDD uplink carrier or an SUL carrier needs to be scheduled, so that when the base station performs resource allocation of the SUL frequency band on the terminal, the information sent by the terminal may be normally received by the base station. Based on this, embodiments of the present invention provide a carrier scheduling method, apparatus, base station, and storage medium.
Fig. 3 is a flowchart of a carrier scheduling method according to an embodiment of the present invention, where the method may be executed by a carrier scheduling apparatus, and the apparatus may be implemented by software and/or hardware, for example: the apparatus may be any one of the above base stations, and the following describes a carrier scheduling method with the base station as an execution subject, as shown in fig. 3, the method in the embodiment of the present invention may include:
step S101: and if the base station allocates the SUL carrier to the terminal, evaluating the channel quality of the SUL carrier and the FDD uplink carrier.
The method comprises the steps that the terminals can be classified according to whether the terminals support the aggregation of the FDD uplink carrier and the SUL carrier, wherein the types of the terminals comprise a first type and a second type, the first type of the terminals support the aggregation of the FDD uplink carrier and the SUL carrier, and transmission data are transmitted by the FDD uplink carrier and the SUL carrier in a concurrent transmission mode or a time-sharing transmission mode, so that the base station can simultaneously schedule the FDD uplink carrier and the SUL carrier for the terminals of the first type; the terminal of the second type does not support the aggregation of the FDD uplink carrier and the SUL carrier, the terminal can only use the FDD uplink carrier or the SUL carrier alone, and the base station can select the terminal of the second type to be allocated to the FDD uplink carrier or the SUL carrier.
If the base station allocates only the FDD uplink carrier to the terminal, the terminal can normally work in the coverage area of the repeater regardless of the first type or the second type, and if the base station allocates the SUL carrier to the terminal and the terminal is in the coverage area of the repeater, the message sent by the terminal may not be received by the base station, so that the base station can perform FDD uplink carrier and SUL carrier scheduling by evaluating the channel quality of the SUL carrier and the FDD uplink carrier.
According to different types of terminals, the manners of evaluating the channel quality of the SUL carrier and the FDD uplink carrier may also be different, and the embodiment of the present application does not limit the specific implementation manner of evaluating the channel quality of the SUL carrier and the FDD uplink carrier, and may evaluate, for example, the channel quality of the SUL carrier and the FDD uplink carrier by using a modulation and coding strategy (Mymova Checkin System, MCS), a power headroom, or a spectrum efficiency, etc.
Step S102: and the base station schedules the FDD uplink carrier or the FDD uplink carrier and the SUL carrier according to the evaluation result of the channel quality of the SUL carrier and the FDD uplink carrier and the type of the terminal.
After the channel quality of the SUL carrier and the FDD uplink carrier is evaluated, according to different evaluation methods, the evaluation methods of the evaluation results may be different.
Since the terminal may or may not support the aggregation of the FDD uplink carrier and the SUL carrier, when the base station performs resource scheduling on the terminal, the type of the terminal needs to be considered, and in a possible implementation, the base station schedules the FDD uplink carrier, or the FDD uplink carrier and the SUL carrier according to the estimation result of the channel quality of the SUL carrier and the FDD uplink carrier and the type of the terminal, including:
if the difference value between the channel quality of the FDD uplink carrier and the channel quality of the SUL carrier is greater than a preset threshold value and the type of the terminal is a first type, scheduling the FDD uplink carrier and the SUL carrier or only scheduling the FDD uplink carrier; or, if the difference between the channel quality of the FDD uplink carrier and the channel quality of the SUL carrier is greater than the preset threshold and the type of the terminal is the second type, scheduling the FDD uplink carrier.
If the difference between the channel quality of the FDD uplink carrier and the channel quality of the SUL carrier is greater than the preset threshold, it indicates that there is a difference between the channel quality of the FDD uplink carrier and the channel quality of the SUL carrier, and the difference may be indicated by the preset threshold. For example, the channel quality of the FDD uplink carrier and the channel quality of the SUL carrier are evaluated according to the spectral efficiency of the FDD uplink carrier and the spectral efficiency of the SUL carrier, and the preset threshold may be set to 10 bits per second per hertz (bit/s/Hz), and if the difference between the spectral efficiency of the FDD uplink carrier and the spectral efficiency of the SUL carrier is greater than 10 bits/s/Hz, it indicates that the difference between the channel quality of the FDD uplink carrier and the channel quality of the SUL carrier is greater than the preset threshold.
If the difference between the channel quality of the FDD uplink carrier and the channel quality of the SUL carrier is greater than the preset threshold, and the type of the terminal is the first type, and the terminal supports aggregation of the FDD uplink carrier and the SUL carrier, the base station may select to only schedule the FDD uplink carrier or to schedule the FDD uplink carrier and the SUL carrier according to the channel quality of the FDD uplink carrier and the channel quality of the SUL carrier. If the difference between the channel quality of the FDD uplink carrier and the channel quality of the SUL carrier is greater than the preset threshold, but the efficiency of the terminal for transmitting data through the SUL carrier still can meet the user requirement, the base station can select to schedule only the FDD uplink carrier or simultaneously schedule the FDD uplink carrier and the SUL carrier, and when the base station simultaneously schedules the FDD uplink carrier and the SUL carrier, the base station can adopt a mode of scheduling less the SUL carrier according to the actual situation so as to ensure that the data information sent by the terminal can be received by the base station.
If the difference value between the channel quality of the FDD uplink carrier and the channel quality of the SUL carrier is greater than the preset threshold, the type of the terminal is the second type, and the terminal does not support the aggregation of the FDD uplink carrier and the SUL carrier, the base station can only schedule the FDD uplink carrier, so as to ensure that the data information sent by the terminal can be received by the base station.
If the channel quality of the SUL carrier is particularly poor, the terminal and the base station may fail to connect on the SUL carrier, and in a possible implementation, if the terminal and the base station fail to connect on the SUL carrier, the base station sends indication information to the terminal, where the indication information is used to indicate the terminal and the base station to reestablish a connection on the FDD uplink carrier.
Through the connection failure between the terminal and the base station on the SUL carrier, the base station indicates the terminal and the base station to reestablish the connection on the FDD uplink carrier, so that the data information sent by the terminal can be received by the base station, and the efficiency of scheduling resources by the base station is improved because the channel quality of the FDD uplink carrier and the channel quality of the SUL carrier do not need to be evaluated.
In summary, the carrier scheduling method provided in the embodiment of the present invention schedules the FDD uplink carrier, or the FDD uplink carrier and the SUL carrier according to the channel quality evaluation result of the SUL carrier and the FDD uplink carrier and the type of the terminal, so as to ensure that the message sent by the terminal can be normally received by the base station.
Optionally, on the basis of the foregoing embodiment, in order to achieve the purpose of evaluating the channel quality of the SUL carrier and the FDD uplink carrier, different evaluation manners may be provided according to different application scenarios, and fig. 4 is a flowchart illustrating a carrier scheduling method according to another embodiment of the present invention, where the method may be executed by a carrier scheduling-based device, and the device may be implemented in a software and/or hardware manner, for example: the apparatus may be any one of the base stations, and the following describes a carrier scheduling method with the base station as an execution subject, as shown in fig. 4, step S101 in the foregoing embodiment of the present invention may include:
step S201: and if the base station allocates the FDD uplink carrier and the SUL carrier to the terminal, evaluating the channel quality of the SUL carrier and the channel quality of the FDD uplink carrier by comparing the frequency spectrum efficiency of the FDD uplink carrier and the SUL carrier.
If the terminal type is the first type and the base station allocates the FDD uplink carrier and the SUL carrier to the terminal, the channel quality of the SUL carrier and the FDD uplink carrier can be evaluated by comparing the spectrum efficiency of the FDD uplink carrier and the SUL carrier.
The link spectral efficiency of a digital communication system is defined as the net bit rate (useful information rate, excluding error correction codes) or the maximum throughput divided by the bandwidth (in: hertz) of the communication channel or data link. Modulation efficiency is defined as the net bit rate (including error correction codes) divided by the bandwidth, and the specific formula for calculating the spectral efficiency is not limited in the embodiment of the present invention.
The method comprises the steps of calculating the frequency spectrum efficiency of the FDD uplink carrier by acquiring the information rate and the bandwidth of the terminal on the FDD uplink carrier, calculating the frequency spectrum efficiency of the SUL carrier by acquiring the information rate and the bandwidth of the terminal on the SUL carrier, and evaluating the channel quality of the SUL carrier and the channel quality of the FDD uplink carrier.
Step S202: and if the base station only allocates the SUL carrier to the terminal, evaluating the channel quality of the SUL carrier and the channel quality of the FDD uplink carrier by comparing the path loss of the FDD downlink carrier and the path loss of the SUL carrier.
Regardless of whether the terminal type is the first type or the second type, the base station may allocate only the SUL carrier to the terminal, and thus the channel quality of the SUL carrier and the FDD uplink carrier cannot be evaluated by comparing the spectral efficiency of the FDD uplink carrier and the SUL carrier. In order to solve the above problem, the present application evaluates the channel quality of the SUL carrier and the FDD uplink carrier by comparing the path loss of the FDD downlink carrier and the SUL carrier.
Optionally, before comparing the path loss of the FDD downlink carrier and the SUL carrier, the carrier scheduling method provided in the embodiment of the present invention may further include:
the base station sends a measurement control message to the terminal, wherein the measurement control message is used for indicating the terminal to carry out the path loss test of the FDD downlink carrier and reporting the path loss test result, and the base station obtains the path loss of the FDD uplink carrier according to the path loss test result reported by the terminal; and obtaining the path loss of the SUL carrier according to the Power Headroom Report (PHR) and the total power of the terminal received by the base station.
The base station indicates the terminal to carry out the path loss test of the FDD downlink carrier, a measurement control message can be sent to the terminal through the base station, the terminal feeds back the terminal receiving power to the base station according to the measurement control message, and the base station obtains the path loss of the FDD downlink carrier according to the base station sending power and the terminal receiving power, so that the path loss of the FDD uplink carrier is obtained.
The path loss of the SUL carrier can be calculated by the terminal transmitting power and the total receiving power of the base station, specifically, the terminal transmitting power can be calculated according to the PHR reported by the terminal to the base station, wherein the PHR reported by the terminal to the base station is:
PHc(i)＝PCMAX,c(i)-{10log10(MPUSCH,c(i))+PO_PUSCH,c(j)+αc(j)·PLc+ΔTF,c(i)+fc(i)}
wherein the pH isc(i) Represents the power headroom, P, reported by the terminal to the base stationcMAX,c(i) Indicating the configured maximum transmit power of the terminal, MPUSCH,c(i) Number of Physical Uplink Shared Channel (PUSCH) Resource Blocks (RBs), P, indicating the ith frame allocationO_PUSCH,c(j) Power offset, α, representing different PUSCH channel typesc(j) Path loss factor PL representing different PUSCH channel typescRepresenting the path loss estimate, ΔTF.c(i) Offset values representing different transport formats, fc (i) represents the power control accumulation amount. i ═ 0,1,2, … denotes a frame number, j ═ 0,1,2 denotes a PUSCH channel type number. For specific meanings reference is made to 3GPP protocol 36.213.
The terminal transmission power is:
terminal transmitting power PcMAX,c(i)-PHc(i)
The path loss of the SUL carrier is:
SUL carrier path loss-terminal transmission power-total base station received power
And after the path loss of the FDD uplink carrier and the SUL carrier is obtained, evaluating the channel quality of the SUL carrier and the channel quality of the FDD uplink carrier by comparing the path loss of the FDD uplink carrier and the SUL carrier.
The following are embodiments of the apparatus of the present invention that may be used to perform embodiments of the method of the present invention. For details which are not disclosed in the embodiments of the apparatus of the present invention, reference is made to the embodiments of the method of the present invention.
Fig. 5 is a schematic structural diagram of a carrier scheduling apparatus according to an embodiment of the present invention, which may be implemented by software and/or hardware, for example: the apparatus may be any one of the foregoing base stations, and the following describes a carrier scheduling method with the base station as an execution subject, as shown in fig. 5, the carrier scheduling apparatus provided in an embodiment of the present invention may include:
an evaluation module 51, configured to evaluate channel quality of the SUL carrier and the uplink frequency division duplex FDD carrier if the base station allocates the supplemental uplink SUL carrier to the terminal.
The scheduling module 52 is configured to schedule the FDD uplink carrier or the FDD uplink carrier and the SUL carrier according to the evaluation result of the channel quality of the SUL carrier and the FDD uplink carrier and the type of the terminal, where the type of the terminal includes a first type and a second type, where the first type of the terminal supports aggregation of the FDD uplink carrier and the SUL carrier, and the second type of the terminal does not support aggregation of the FDD uplink carrier and the SUL carrier.
Optionally, the scheduling module 51 is specifically configured to:
if the difference value between the channel quality of the FDD uplink carrier and the channel quality of the SUL carrier is greater than a preset threshold value and the type of the terminal is a first type, scheduling the FDD uplink carrier and the SUL carrier or only scheduling the FDD uplink carrier; or, if the difference between the channel quality of the FDD uplink carrier and the channel quality of the SUL carrier is greater than the preset threshold and the type of the terminal is the second type, scheduling the FDD uplink carrier.
Optionally, the evaluation module 52 is specifically configured to:
and if the base station allocates the FDD uplink carrier and the SUL carrier to the terminal, evaluating the channel quality of the SUL carrier and the channel quality of the FDD uplink carrier by comparing the frequency spectrum efficiency of the FDD uplink carrier and the SUL carrier.
Or, if the base station allocates only the SUL carrier to the terminal, the channel quality of the SUL carrier and the FDD uplink carrier is evaluated by comparing the path loss of the FDD downlink carrier and the SUL carrier.
Optionally, fig. 6 is a schematic structural diagram of a carrier scheduling apparatus according to another embodiment of the present invention, and the apparatus may be implemented in software and/or hardware, for example: the apparatus may be any one of the foregoing base stations, and the following describes a carrier scheduling method with the base station as an execution subject, as shown in fig. 6, the carrier scheduling apparatus provided in the embodiment of the present invention may further include:
the first obtaining module 53 is configured to send a measurement control message to the terminal by the base station, where the measurement control message is used to instruct the terminal to perform a path loss test on an FDD downlink carrier and report a path loss test result, and the base station obtains a path loss of an FDD uplink carrier according to the path loss test result reported by the terminal.
And a second obtaining module 54, configured to obtain the path loss of the SUL carrier according to the power headroom report PHR and the total power of the terminal received by the base station.
Optionally, as shown in fig. 6, the carrier scheduling apparatus provided in the present invention further includes:
a sending module 55, configured to send, if the connection between the terminal and the base station on the SUL carrier fails, indication information to the terminal, where the indication information is used to indicate the terminal and the base station to reestablish the connection on the FDD uplink carrier.
An embodiment of the present invention provides a base station, and fig. 7 is a schematic structural diagram of the base station provided in the embodiment of the present invention. As shown in fig. 7, a base station provided in an embodiment of the present invention may include:
a processor 71, a memory 72, a transceiver 73 and a computer program; wherein the transceiver 73 enables data transmission between the base station and the terminal, a computer program is stored in the memory 72 and configured to be executed by the processor 71, the computer program comprising instructions for performing the above-described carrier scheduling method, the contents and effects of which refer to the method embodiments.
The present application provides a computer storage medium, where the storage medium includes computer instructions, and when the instructions are executed by a computer, the instructions cause the computer to implement the carrier scheduling method provided in the foregoing embodiments, and please refer to the method embodiments for content and effect thereof.
The present application provides a computer program product, which includes computer instructions, when the instructions are executed by a computer, the instructions cause the computer to implement the carrier scheduling method provided in the foregoing embodiments, and the contents and method thereof refer to the method embodiments.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (12)

1. A method for scheduling carriers, comprising:
if the base station distributes supplementary uplink SUL carriers to the terminal, evaluating the channel quality of the SUL carriers and the frequency division duplex FDD uplink carriers;
scheduling the FDD uplink carrier or the FDD uplink carrier and the SUL carrier according to the evaluation result of the channel quality of the SUL carrier and the FDD uplink carrier and the type of the terminal;
the types of the terminals include a first type and a second type, wherein the first type of terminal supports the aggregation of the FDD uplink carrier and the SUL carrier, and the second type of terminal does not support the aggregation of the FDD uplink carrier and the SUL carrier.
2. The method according to claim 1, wherein scheduling the FDD uplink carrier or the FDD uplink carrier and the SUL carrier according to the result of evaluating the channel quality of the SUL carrier and the FDD uplink carrier and the type of the terminal comprises:
if the difference value between the channel quality of the FDD uplink carrier and the channel quality of the SUL carrier is larger than a preset threshold value and the type of the terminal is a first type, scheduling the FDD uplink carrier and the SUL carrier or only scheduling the FDD uplink carrier;
or the like, or, alternatively,
and if the difference value between the channel quality of the FDD uplink carrier and the channel quality of the SUL carrier is greater than a preset threshold value and the type of the terminal is a second type, scheduling the FDD uplink carrier.
3. The method of claim 1, wherein the evaluating channel quality for the SUL carrier and the FDD uplink carrier comprises:
if the base station allocates the FDD uplink carrier and the SUL carrier to the terminal, evaluating channel quality of the SUL carrier and the FDD uplink carrier by comparing spectral efficiency of the FDD uplink carrier and the SUL carrier;
or the like, or, alternatively,
and if the base station only allocates the SUL carrier to the terminal, evaluating the channel quality of the SUL carrier and the channel quality of the FDD uplink carrier by comparing the path loss of the FDD downlink carrier with the path loss of the SUL carrier.
4. The method of claim 3, wherein before comparing the path loss for the FDD carrier and the SUL carrier, further comprising:
the base station sends a measurement control message to the terminal, wherein the measurement control message is used for indicating the terminal to carry out the path loss test of the FDD downlink carrier and reporting the path loss test result, and the base station obtains the path loss of the FDD uplink carrier according to the path loss test result reported by the terminal;
and obtaining the path loss of the SUL carrier wave according to a Power Headroom Report (PHR) and the total power of the terminal received by the base station.
5. The method of any of claims 1 to 4, further comprising:
and if the connection between the terminal and the base station on the SUL carrier fails, sending indication information to the terminal, wherein the indication information is used for indicating the terminal and the base station to reestablish the connection on the FDD uplink carrier.
6. A carrier scheduling apparatus, comprising:
the evaluation module is used for evaluating the channel quality of the SUL carrier and the uplink frequency division duplex FDD carrier if the base station allocates the supplementary uplink SUL carrier to the terminal;
and the scheduling module is used for scheduling the FDD uplink carrier or the FDD uplink carrier and the SUL carrier according to the evaluation result of the channel quality of the SUL carrier and the type of the terminal, wherein the type of the terminal comprises a first type and a second type, the terminal of the first type supports the aggregation of the FDD uplink carrier and the SUL carrier, and the terminal of the second type does not support the aggregation of the FDD uplink carrier and the SUL carrier.
7. The apparatus of claim 6, wherein the scheduling module is specifically configured to:
if the difference value between the channel quality of the FDD uplink carrier and the channel quality of the SUL carrier is larger than a preset threshold value and the type of the terminal is a first type, scheduling the FDD uplink carrier and the SUL carrier or only scheduling the FDD uplink carrier;
or the like, or, alternatively,
and if the difference value between the channel quality of the FDD uplink carrier and the channel quality of the SUL carrier is greater than a preset threshold value and the type of the terminal is a second type, scheduling the FDD uplink carrier.
8. The apparatus of claim 6, wherein the evaluation module is specifically configured to:
if the base station allocates the FDD uplink carrier and the SUL carrier to the terminal, evaluating channel quality of the SUL carrier and the FDD uplink carrier by comparing spectral efficiency of the FDD uplink carrier and the SUL carrier;
or the like, or, alternatively,
and if the base station only allocates the SUL carrier to the terminal, evaluating the channel quality of the SUL carrier and the channel quality of the FDD uplink carrier by comparing the path loss of the FDD downlink carrier with the path loss of the SUL carrier.
9. The apparatus of claim 8, further comprising:
a first obtaining module, configured to send a measurement control message to the terminal by the base station, where the measurement control message is used to instruct the terminal to perform a path loss test on an FDD downlink carrier and report a path loss test result, and the base station obtains a path loss of an FDD uplink carrier according to the path loss test result reported by the terminal;
and a second obtaining module, configured to obtain a path loss of the SUL carrier according to a power headroom report PHR and a total power of the terminal received by the base station.
10. The apparatus of any one of claims 6 to 9, further comprising:
and the sending module is used for sending indication information to the terminal if the connection between the terminal and the base station on the SUL carrier fails, wherein the indication information is used for indicating the terminal and the base station to reestablish the connection on the FDD uplink carrier.
11. A base station comprising a processor and a memory;
the memory is configured to store computer-executable instructions to cause the processor to execute the instructions to implement the carrier scheduling method of any of claims 1 to 5.
12. A computer storage medium comprising computer instructions which, when executed by a computer, cause the computer to implement the carrier scheduling method of any one of claims 1 to 5.
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