WO2017193706A1

WO2017193706A1 - Uplink scheduling method and device for carrier aggregation

Info

Publication number: WO2017193706A1
Application number: PCT/CN2017/077519
Authority: WO
Inventors: 刘蓉; 徐明宇; 寇会如; 齐丙花
Original assignee: 电信科学技术研究院
Priority date: 2016-05-11
Filing date: 2017-03-21
Publication date: 2017-11-16
Also published as: CN107371239A; CN107371239B

Abstract

The present invention relates to the technical field of communications, and specifically relates to an uplink scheduling method and device for carrier aggregation. The method comprises: separately computing, for each component carrier after carrier aggregation, a transmission parameter of a UE unit to be scheduled, wherein the component carriers comprise PCells and SCells of the UE unit to be scheduled; determining, on the basis of the transmission parameter for each component carrier of the UE unit to be scheduled and according to a preset determination rule, a component carrier for uplink scheduling from the PCells and SCells of the UE unit to be scheduled; and allocating, on the basis of the component carrier for uplink scheduling, resources. In this way, the present invention enables flexible selection of a carrier involved in uplink scheduling for carrier aggregation from component carriers of a UE unit to be scheduled, thus preventing performance from being influenced by power reduction of the UE unit, maximizing the advantageous effects of carrier aggregation, and improving the throughput of the UE unit.

Description

Carrier aggregation uplink scheduling method and device

This application claims the priority of the Chinese Patent Application entitled "A Carrier Aggregation Upstream Scheduling Method and Apparatus" filed on May 11, 2016, with the application number of 201610308479.4, the entire contents of In this application.

Technical field

The present application relates to the field of communications technologies, and in particular, to an uplink scheduling method and apparatus for carrier aggregation.

Background technique

In the LTE (Long Term Evolution) system, the serving cell is a cell that provides data transmission services for the user equipment (UE). Each UE has at most one serving cell, but a CA is introduced in Rel-10. After the (Carrier Aggregation) technology, the UE can have multiple serving cells at the same time, that is, the system aggregates two or more available carriers to form a larger transmission bandwidth and achieve a higher transmission rate. Users provide a better service experience. Therefore, the serving cell of the UE is divided into two categories: a PCell/PCC (Primary Cell/Primary Component Carrier) and a SCell/SCC (Secondary Cell/Secondary Component Carrier). ), where PCell inherits the nature of the serving cell in the LTE system, and the SCell is only used as an additional resource to carry the function of data transmission. Both PCell and SCell are from the perspective of the UE. The PCell is a serving cell that establishes an RRC (Radio Resource Control) connection for the UE. The establishment process is the same as that of the LTE system, and the SCell is configured by the RRC layer of the base station. The base station performs the SCell configuration on the UE according to actual requirements. The SCell configuration includes the addition of the SCell, the deletion of the SCell, and the modification of the SCell, which are completed by the RRC reconfiguration process.

The carrier aggregation technology is applied, so that the throughput and cell capacity of the UE are greatly improved. In the prior art, the uplink scheduling method of the carrier aggregation, as long as the UE has the activated SCell, the PCell and each activated SCell participate in the uplink resource allocation when the UE is scheduled.

However, when the UE is in the cell edge, when performing uplink scheduling of carrier aggregation, the base station allocates resources on the component carriers aggregated by each carrier, which may exceed the maximum transmit power of the UE, resulting in waste of resources. Therefore, in order to avoid UE power back. Decommissioning performance, when scheduling, you need to consider the power limitation of the UE. In this way, when uplink scheduling of carrier aggregation is performed, the resources allocated to the UE are finally determined to be determined by the component carriers aggregated by each carrier. In this case, the UE throughput is not single carrier scheduling or concentrated on fewer carriers. Scheduling the performance of allocating resources is good.

Therefore, in the prior art, when the base station performs scheduling on the UE, the power of the UE is limited, and each carrier is used. The aggregated member carrier can only allocate a small amount of resources, but the UE's PCell and all the activated SCells participate in resource allocation. This does not take into account that the UE throughput improvement effect caused by carrier aggregation cannot be maximized, and the UE performance is degraded, affecting the UE. Throughput.

Summary of the invention

An embodiment of the present invention provides an uplink scheduling method and apparatus for carrier aggregation, which solves the problem that the UE cannot maximize the throughput of the UE due to limited power of the UE in the prior art.

The specific technical solutions provided by the embodiments of the present application are as follows:

In a first aspect, an uplink scheduling method for carrier aggregation includes:

Calculating, respectively, a transmission parameter of the UE to be scheduled on each component carrier that is to be scheduled by the carrier; wherein the component carrier includes the PCell and the SCell used by the UE to be scheduled;

Determining, according to a preset determination rule, a component carrier that performs uplink scheduling from a PCell and each SCell used by the to-be-scheduled UE according to a preset determination rule;

Resource allocation is performed based on the component carriers that perform uplink scheduling as described above.

Optionally, if the foregoing transmission parameter is the maximum transmission bandwidth, respectively, the transmission parameters of the UE to be scheduled on each component carrier that is aggregated by the carrier are respectively calculated, specifically:

Calculating, according to the latest received PH of the UE to be scheduled, the PSD of the UE to be scheduled on each component carrier;

The maximum transmission bandwidth of each of the component carriers to be scheduled is calculated according to the PSD of the UE to be scheduled on each component carrier.

Optionally, based on the transmission parameters of the to-be-scheduled UE on each component carrier, determine, according to a preset determination rule, a component carrier that performs uplink scheduling from the PCell and each SCell used by the to-be-scheduled UE, specifically including: :

Determining, according to the maximum transmission bandwidth of the UE to be scheduled on each component carrier, whether to select a component carrier whose maximum transmission bandwidth is not less than a preset first threshold value from the PCell and each SCell used by the to-be-scheduled UE;

If yes, the filtered component carrier is used as the component carrier for uplink scheduling;

Otherwise, according to the preset determination rule, the component carrier performing uplink scheduling is determined from the PCell and each SCell used by the UE to be scheduled.

Optionally, the component carrier that performs uplink scheduling is determined from the PCell and each SCell used by the to-be-scheduled UE according to the preset determining rule, and specifically includes:

According to the PSD of the UE to be scheduled on each component carrier, the PCell and each used from the UE to be scheduled The member carrier with the smallest PSD is selected from one SCell, and one component carrier is arbitrarily selected from the selected component carriers as a component carrier for uplink scheduling; or

The resource occupancy rate of each of the component carriers is calculated separately, and the component carrier with the smallest resource occupancy rate is selected from the PCell and each SCell used by the to-be-scheduled UE, and one component carrier is arbitrarily selected from the selected component carriers. As a component carrier for uplink scheduling; or,

Calculating the resource occupancy rate of each of the component carriers separately, and calculating the priority weights of each of the component carriers according to the resource occupancy rate and the PSD of each of the component carriers, and using the PCell and each of the to-be-scheduled UEs. A member carrier with the smallest priority weight is selected in one SCell, and one member carrier is arbitrarily selected from the filtered component carriers as a component carrier for uplink scheduling.

Optionally, if the foregoing transmission parameter is a path loss, respectively, the transmission parameters of the UE to be scheduled on each component carrier that is aggregated by the carrier are respectively calculated, specifically:

Calculating, according to the PH reported by the UE to be scheduled, the path loss of each of the component carriers of the to-be-scheduled UE; or

The path loss of each of the component carriers to be scheduled is calculated according to the RSRP of the UE to be scheduled on each component carrier.

Determining, according to the path loss of the UE to be scheduled on each component carrier, whether to select a component carrier whose path loss is not greater than a preset second threshold value from the PCell and each SCell used by the to-be-scheduled UE;

Selecting a component carrier with the smallest path loss from the PCell and each SCell used by the UE to be scheduled according to the path loss of the UE to be scheduled on each component carrier, and arbitrarily selecting one component carrier from the selected component carriers. As a component carrier for uplink scheduling; or,

Calculating the resource occupancy rate of each of the component carriers separately, and calculating the priority weight of each of the component carriers according to the resource occupancy rate and the path loss of each component carrier, and using the PCell and the UEell to be scheduled from the UE to be scheduled. A component carrier with the smallest priority weight is selected in each SCell, and one component carrier is arbitrarily selected from the filtered component carriers as a component carrier for performing uplink scheduling.

An uplink scheduling device for carrier aggregation, comprising:

a calculating unit, configured to separately calculate a transmission parameter of the UE to be scheduled on each of the component carriers that are aggregated by the carrier; where the component carrier includes the PCell and the SCell used by the UE to be scheduled;

a determining unit, configured to determine, according to a preset determining rule, a component carrier that performs uplink scheduling from a PCell and each SCell used by the to-be-scheduled UE according to a preset determining rule;

And a scheduling unit, configured to perform resource allocation based on the component carrier that performs uplink scheduling as described above.

Optionally, if the foregoing transmission parameter is a maximum transmission bandwidth, the calculating unit is specifically configured to:

Optionally, the determining unit is specifically configured to:

And selecting, according to the PSD of the to-be-scheduled UE on each component carrier, the component carrier with the smallest PSD from the PCell and each SCell used by the to-be-scheduled UE, and arbitrarily selecting one component carrier from the selected component carriers. Member carrier for uplink scheduling; or,

Calculating the resource occupancy rate of each of the component carriers separately, and calculating the priority weights of each of the component carriers according to the resource occupancy rate and the PSD of each of the component carriers, and using the PCell and each of the to-be-scheduled UEs. The member carrier with the smallest priority weight is selected from one SCell, and any of the selected component carriers are selected. A member carrier is selected as the component carrier for uplink scheduling.

Optionally, if the foregoing transmission parameter is a path loss, the calculating unit is specifically configured to:

Optionally, the determining unit is specifically configured to:

In a third aspect, the device for uplink scheduling of the second carrier aggregation in the embodiment of the present application includes a processor, a transceiver, and a memory;

A processor for reading a program in the memory, performing the following process:

A transceiver for receiving and transmitting data under the control of a processor.

Optionally, if the foregoing transmission parameter is a maximum transmission bandwidth, the processor is specifically configured to:

Optionally, the processor is specifically configured to:

Optionally, if the foregoing transmission parameter is a path loss, the processor is specifically configured to:

Optionally, the processor is specifically configured to:

The beneficial effects of the application are as follows:

In the embodiment of the present application, the transmission parameters of the to-be-scheduled UE on each component carrier that is aggregated by the carrier are respectively calculated, where the component carrier includes the PCell and the SCell used by the to-be-scheduled UE; a component carrier on the component carrier, according to a preset determination rule, determining, from the PCell and each SCell used by the to-be-scheduled UE, a component carrier that performs uplink scheduling; and performing resource allocation based on the component carrier that performs uplink scheduling, According to the set determination rule, the carriers participating in the carrier aggregation uplink scheduling are flexibly selected in the component carriers of the UE to be scheduled, and each component carrier does not participate in resource allocation every time the uplink scheduling is performed, and the UE power is avoided. Under the premise of the performance of the fallback performance, the gain effect of the carrier aggregation is maximized, and the throughput of the UE is improved.

DRAWINGS

FIG. 1 is a flowchart of a method for uplink scheduling of carrier aggregation according to an embodiment of the present invention;

2 is a schematic structural diagram of an apparatus for uplink scheduling of a first type of aggregated carrier according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of an apparatus for uplink scheduling of a second carrier aggregation according to an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application are clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It is to be understood that the described embodiments are only a part of the embodiments, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

In the embodiment of the present application, the transmission parameters of the UE to be scheduled on each component carrier that is aggregated by the carrier are respectively calculated according to the foregoing, The transmission parameters and the preset determination rules determine the aggregate carrier for uplink transmission, and then perform resource allocation.

The present application is described in detail below through specific embodiments. Of course, the application is not limited to the following embodiments.

As shown in FIG. 1 , in the embodiment of the present application, the specific process of the uplink scheduling method for carrier aggregation is as follows:

Step 100: Calculate the transmission parameters of the UE to be scheduled on each component carrier that is to be scheduled by the UE. The component carrier includes the PCell and the SCell used by the UE to be scheduled.

In practice, in the carrier aggregation, the serving cell of the UE can be divided into a PCell and an SCell. After the SCell is activated, the activated SCell can participate in resource scheduling.

When step 100 is performed, it can be divided into the following two cases:

In the first case, if the foregoing transmission parameter is the maximum transmission bandwidth, when the step 100 is performed, the method specifically includes:

First, the PSD (power spectral density) of each UE to be scheduled is calculated according to the PH (Power Headroom) reported by the UE to be scheduled.

In actuality, according to the provisions in the protocol, the UE may report the PH to the base station periodically, or report the PH according to the preset reporting mechanism. The PH reported by the UE includes the PH value of each component carrier.

For example, PSD _ccj (i) represents the PSD of the UE to be scheduled on the component carrier CCj, then

PSD _ccj (i)=P _CMAX,ccj (i)-PH _type1,ccj (i)-10log ₁₀ (M _PUSCH,ccj (i))

_{Wherein, PRB M PUSCH, ccj (i} ) is a base station scheduled to be the statistical records on the scheduling assignment last UE in subframe i PUSCH resources (Physical Resource Block, physical resource block) number, when M _{PUSCH, ccj} ( When i) is 0, it is calculated according to M _{PUSCH, ccj} (i)=1, and P _{CMAX, ccj} is the maximum transmit power on the component carrier CCj carried by the UE to be scheduled to report PH, PH _{type1, ccj} (i) Is the PH value on the component carrier CCj.

Then, according to the PSD of the UE to be scheduled on each component carrier, calculate the maximum transmission bandwidth of the UE to be scheduled on each component carrier.

For example, M _{MAX_PUSCH_PRB, ccj} (n) represents the maximum transmission bandwidth of the UE to be scheduled on the component carrier CCj, then

The P _{alloc, ccj} (n) is the maximum transmit power of the to-be-scheduled UE allocated to the base station on the component carrier CCj, where P _{alloc, ccj} (n) is the allocation method preset by the base station according to the protocol, and is given in advance. Scheduling UE allocation is predictable.

The second case: If the above transmission parameter is a path loss, when performing step 100, the following calculation methods are available:

The first calculation method is: calculating the path loss of each of the component carriers of the to-be-scheduled UE according to the PH reported by the UE to be scheduled.

The base station can calculate the path loss PL _ccj corresponding to the UE to be scheduled on the CCj by using the PH corresponding to the CCj reported by the UE to be scheduled, and the calculation formula is as follows:

PL _ccj ={P _CMAX,ccj (i)-PH _type1,ccj (i)-{10log ₁₀ (M _PUSCH,ccj (i))+P _{O_PUSCHc,cj} (j)+Δ _TF,ccj (i)+f _Ccj (i)}}/α _ccj (j)

Where i denotes a subframe corresponding to the PUSCH, P _{O_PUSCH, ccj} (j) is an initial value of the PUSCH power corresponding to the CCj, and the cell-specific normalized part P _{O_NOMINAL_PUSCH, ccj} (j) and the UE-specific part P _{O_UE_PUSCH, ccj} ( The sum of j), and P _{O_NOMINAL_PUSCH, ccj} (j) and P _{O_UE_PUSCH, ccj} (j) are given by higher layer signaling; Δ _{TF, ccj} (i) is the power adjustment related to the MSC level; f _ccj (i ) is the adjustment state of the current power control; α _ccj (j) is the path loss compensation factor, which is a cell-specific parameter and is given by higher layer signaling.

Thus, the base station side utilizes known P _{CMAX, ccj} (i), M _{PUSCH, ccj} (i), P _{O_PUSCH, ccj} (j), Δ _{TF, ccj} (i), f _ccj (i), α _ccj (j And the PH reported by the UE to be scheduled, calculates the path loss of the UE to be scheduled on each member carrier, wherein the PH value only uses Type 1 PH.

The second calculation method is: calculating, according to the RSRP (Reference Signal Receiving Power) of each of the component carriers, the path loss of each of the component carriers to be scheduled.

The base station side may obtain the path loss PL _ccj corresponding to the UE on CCj according to the actual transmit power of the UE at CCj and the received power of the base station:

PL _ccj =P _TXccj -RSRP _ccj

Wherein, P _TXccj represents a CRS (Cell Reference Signal) transmit power of _CCj , and RSRP _ccj represents a CRS receive power of CCj.

Step 110: Determine, according to a preset determination rule, a component carrier that performs uplink scheduling according to a preset determination rule, according to a preset determination rule, a PCell and each SCell used by the to-be-scheduled UE.

Corresponding to the two cases when the step 100 is performed, when the step 110 is executed, the following two cases may be specifically:

In the first case, if the foregoing transmission parameter is the maximum transmission bandwidth, when the step 110 is performed, the method specifically includes:

First, determining, according to the maximum transmission bandwidth of the UE to be scheduled on each component carrier, whether to select a maximum transmission bandwidth from the PCell and each SCell used by the UE to be scheduled that is not less than a preset first threshold. Member Carrier.

Then, if the determination is yes, the filtered component carrier is used as the component carrier for uplink scheduling.

That is, the component carrier whose maximum transmission bandwidth is less than the preset first threshold does not participate in the uplink scheduling. Only the component carriers whose maximum transmission bandwidth is not less than the preset first threshold participate in the uplink scheduling, and improve. UE throughput.

The preset first threshold value may be configured by an external O&M (operator and maintenance).

If the component carrier whose uplink transmission bandwidth is not less than the preset first threshold is not selected, the following three determination rules may be determined:

The first determining rule is: selecting the smallest component carrier of the PSD from the PCell and each SCell used by the UE to be scheduled according to the PSD of the UE to be scheduled on each component carrier, and arbitrarily selecting from the selected component carriers. One member carrier is used as a component carrier for uplink scheduling.

That is to say, the member carrier with the smallest PSD _ccj (i) is involved in the current uplink scheduling, and all other component carriers are not involved in the current uplink scheduling. If the PSD _ccj (i) has the smallest component carrier CCj, then You can choose one of them.

The second determination rule is: calculating the resource occupancy rate of each component carrier separately, and filtering out the component carriers with the smallest resource occupancy rate from the PCell and each SCell used by the UE to be scheduled, and arbitrarily selecting from the selected component carriers. A member carrier is selected as the component carrier for uplink scheduling.

The resource occupancy rate here is a cell level, and may be an actual resource occupancy rate or an equivalent resource occupancy rate. The resource occupancy rate of each component carrier is calculated, and the existing method for calculating the resource occupancy rate may be used. It is not limited in the embodiment of the present application.

For example, for the actual resource occupancy rate, the calculation method is: resource occupancy rate P _ccj = actual allocated PRB / total available PRB.

For another example, for the equivalent resource occupancy rate, the calculation method is

The equivalent resource occupancy rate is the sum of the equivalent resource occupancy rates of all LCGs (Logic Channel Groups) of the cell. For the equivalent resource occupancy rate of the component carrier CCj, it is recorded as P _{ccj_equivalent} , for example, the calculation formula is as follows :

Wherein, P _{ccj_equivalent_LCGi} is the equivalent resource occupancy rate of each LCGi corresponding component carrier CCj cell, and the calculation formula is as follows:

Wherein, N _{ccj_PRB_LCGi} represents the actual number of allocated PRBs of CCGi on CCj; R _{ccj_LCGi} represents the actual transmission rate of LCGi on CCj; N represents the total number of uplink carriers that LCGi participates in scheduling; and PRB _LCGi represents the QoS guaranteed bit rate of LCGi configured; Band _j represents the system bandwidth corresponding to CCj.

In particular, if the actual rate R _{ccj_LCGi} of the LCGi on _CCj is 0, then the equivalent resource occupancy P _{ccj_equivalent_LCGi} corresponding to the current statistical period is directly recorded as 0.

The third determination rule is: calculating the resource occupancy rate of each component carrier separately, and calculating the priority weight of each component carrier according to the resource occupancy rate and the PSD of each component carrier, and using the priority to be used by the UE to be scheduled. A component carrier with the smallest priority weight is selected from the PCell and each SCell, and one component carrier is arbitrarily selected from the filtered component carriers as the component carrier for uplink scheduling.

For example, if PRI _ccj is the priority weight of the component carrier CCj, then

PRI _ccj =α×PSD _ccj (i)+(1-α)×P _ccj

Where α is a weighting coefficient, which can be configured in an external O&M, the preferred range is [0.0, 1.0], PSD _ccj (i) is the PSD of the UE to be scheduled on the component carrier CCj, and P _ccj is the component carrier CCj. Resource occupancy rate.

It is worth noting that the effect of the first determination rule and the second determination rule can also be achieved by setting the value of α in the above third determination rule. For example, when α=1.0, it is the first determination. The effect of the rule, when α = 0.0, is the effect of the second determination rule. However, in practice, the first determination rule and the second determination rule are simpler to implement, and there is no need to configure an external O&M. Of course, only the third determination rule can be used, and the O&M can be flexibly implemented to achieve different effects. Can meet different needs.

The second case: if the transmission parameter is a path loss, when step 110 is performed, the method specifically includes:

First, according to the path loss of the UE to be scheduled on each component carrier, it is determined whether the component carrier whose path loss is not greater than the preset second threshold is selected from the PCell and each SCell used by the to-be-scheduled UE.

The preset second threshold value can be configured by an external O&M.

Then, if yes, the filtered component carrier is used as the component carrier for uplink scheduling;

When the component carrier with the path loss is not greater than the preset second threshold is not selected, the component carrier that performs the uplink scheduling is determined, and the following three determining rules are also available:

a first determining rule: according to the path loss of the UE to be scheduled on each component carrier, selecting a component carrier with the smallest path loss from the PCell and each SCell used by the to-be-scheduled UE, and from the selected component carriers, A member carrier is arbitrarily selected as a component carrier for uplink scheduling.

That is to say, the component carrier with the smallest path loss is selected to participate in the current resource scheduling, and other component carriers do not participate in the current resource scheduling, and if there are multiple component carriers with the smallest path loss, one of them can be arbitrarily selected.

a second determining rule: calculating a resource occupancy rate of each of the component carriers, and selecting a component carrier with the smallest resource occupancy rate from the PCell and each SCell used by the to-be-scheduled UE, and selecting, from the selected component carriers, A member carrier is arbitrarily selected as a component carrier for uplink scheduling.

The resource occupancy rate here is the same as the resource occupancy rate in the case where the foregoing transmission parameter is the maximum transmission bandwidth, and the calculation method may be the same, and details are not described herein again.

a third determining rule: respectively calculating a resource occupancy rate of each of the component carriers, and calculating a priority weight of each of the component carriers according to the resource occupancy rate and the path loss of each component carrier, and The component carrier with the smallest priority weight is selected from the PCell and each SCell used by the UE, and one component carrier is arbitrarily selected from the filtered component carriers as the component carrier for uplink scheduling.

PRI _ccj =α×PL _ccj (i)+(1-α)×P _ccj

Where α is a weighting coefficient, which can be configured in an external O&M, the preferred range is [0.0, 1.0], PL _ccj (i) is the path loss of the UE to be scheduled on the component carrier CCj, and P _ccj is the component carrier CCj Resource occupancy rate.

Similarly, by setting the value of α in the above third determination rule, the effects of the first determination rule and the second determination rule described above can also be achieved, for example, when α=1.0, it is the first determination rule. The effect, when α = 0.0, is the effect of the second determination rule.

Step 120: Perform resource allocation based on the component carrier that performs uplink scheduling as described above.

That is, after determining the component carrier for uplink scheduling, when performing resource allocation, the base station does not need to allocate resources on all PCells and SCells used by the UE to be scheduled, and adaptively selects members participating in the uplink scheduling. Carrier to maximize the throughput of the UE.

Based on the foregoing embodiment, referring to FIG. 2, in the embodiment of the present application, the uplink scheduling apparatus of the first carrier aggregation specifically includes:

The calculating unit 20 is configured to separately calculate a transmission parameter of the UE to be scheduled on each component carrier that is aggregated by the carrier, where the component carrier includes the PCell and the SCell used by the UE to be scheduled;

a determining unit 21, configured to determine, according to a preset determining rule, a component carrier that performs uplink scheduling according to a preset determining rule, according to a PCell and each SCell used by the to-be-scheduled UE;

The scheduling unit 22 is configured to perform resource allocation based on the component carrier that performs uplink scheduling as described above.

Optionally, if the foregoing transmission parameter is a maximum transmission bandwidth, the calculating unit 20 is specifically configured to:

Optionally, based on the transmission parameter of the UE to be scheduled on each component carrier, the determining unit 21 is specifically configured to:

Optionally, the determining unit 21 is specifically configured to:

Optionally, if the foregoing transmission parameter is a path loss, the calculating unit 20 is specifically configured to:

Optionally, the determining unit 21 is specifically configured to:

Referring to FIG. 3, in the embodiment of the present application, the apparatus for uplink scheduling of the second carrier aggregation includes a processor 30, a transceiver 31, and a memory 32, where

The processor 30 is configured to read a program in the memory 32 and perform the following process:

The transceiver 31 is configured to receive and transmit data under the control of the processor 30.

Optionally, if the foregoing transmission parameter is a maximum transmission bandwidth, the processor 30 is specifically configured to:

Optionally, the processor 30 is specifically configured to:

Optionally, if the foregoing transmission parameter is a path loss, the processor 30 is specifically configured to:

Optionally, the processor 30 is specifically configured to:

Otherwise, according to the preset determination rule, it is determined from the PCell and each SCell used by the UE to be scheduled. Member carrier for uplink scheduling.

Optionally, the processor 30 is specifically configured to:

Here, in FIG. 3, the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 30 and various circuits of memory represented by memory 32. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. Transceiver 31 may be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.

The processor 30 is responsible for managing the bus architecture and general processing, and the memory 32 can store data used by the processor 30 in performing operations.

As described above, in the embodiment of the present application, the transmission parameters of the UE to be scheduled on each component carrier that is aggregated by the carrier are separately calculated, where the component carrier includes the PCell and the SCell used by the UE to be scheduled; Determining a transmission parameter of the UE on each component carrier, and determining, according to a preset determination rule, a component carrier that performs uplink scheduling from the PCell and each SCell used by the to-be-scheduled UE; and based on the component carrier that performs uplink scheduling according to the foregoing, The resource allocation is performed. In this way, according to the determined determination rule, the carriers participating in the carrier aggregation uplink scheduling are flexibly selected in the component carriers of the UE to be scheduled, and all the component carriers participate in the resource allocation without performing uplink scheduling every time. Under the premise of avoiding the impact of UE power backoff, the gain effect of carrier aggregation is maximized, and the throughput of the UE is improved.

Those skilled in the art will appreciate that embodiments of the present application can be provided as a method, system, or computer program product. Thus, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware. Moreover, the application may employ one or more computers having computer usable program code embodied therein. The form of a computer program product embodied on a storage medium, including but not limited to disk storage, CD-ROM, optical storage, and the like.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

While the preferred embodiment of the present application has been described, it will be apparent that those skilled in the art can make further changes and modifications to the embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and

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

Claims

An uplink scheduling method for carrier aggregation, which is characterized by:

Calculating, respectively, a transmission parameter of the to-be-scheduled user equipment UE on each component carrier that is aggregated by the carrier; wherein the component carrier includes a primary member carrier PCell and a secondary component carrier SCell used by the to-be-scheduled UE;

Determining, according to a preset determining rule, a component carrier that performs uplink scheduling, according to a predetermined determining rule, according to a preset determining rule, a PCell and each SCell used by the to-be-scheduled UE;

Resource allocation is performed based on the component carrier that performs uplink scheduling.
The method of claim 1, wherein if the transmission parameter is a maximum transmission bandwidth, the calculating the transmission parameters of the UE to be scheduled on each component carrier that is aggregated by the carrier, respectively, includes:

Calculating, according to the latest received power space PH reported by the to-be-scheduled UE, a power spectral density PSD of the to-be-scheduled UE on each component carrier;

And calculating, according to the PSD of the to-be-scheduled UE on each component carrier, a maximum transmission bandwidth of the to-be-scheduled UE on each component carrier.
The method according to claim 2, wherein the PCell and each of the UEs to be scheduled are used according to a preset determination rule based on transmission parameters of the UE to be scheduled on each component carrier. In the SCell, the component carrier that performs uplink scheduling is determined, and specifically includes:

Determining, according to the maximum transmission bandwidth of the UE to be scheduled on each component carrier, whether to select a component carrier whose maximum transmission bandwidth is not less than a preset first threshold value from the PCell and each SCell used by the to-be-scheduled UE ;

If yes, the filtered component carrier is used as the component carrier for uplink scheduling;

Otherwise, the component carrier performing uplink scheduling is determined from the PCell and each SCell used by the to-be-scheduled UE according to a preset determination rule.
The method according to claim 3, wherein the component carrier that performs uplink scheduling is determined from the PCell and each SCell used by the to-be-scheduled UE according to a preset determination rule, and specifically includes:

And selecting, according to the PSD of the to-be-scheduled UE on each component carrier, the component carrier with the smallest PSD from the PCell and each SCell used by the to-be-scheduled UE, and arbitrarily selecting one member from the selected component carriers. The carrier is used as a component carrier for uplink scheduling; or

Calculating a resource occupancy rate of each of the component carriers, and selecting a component carrier with the smallest resource occupancy rate from the PCell and each SCell used by the to-be-scheduled UE, and selecting one of the selected component carriers. The component carrier is used as a component carrier for uplink scheduling; or

Calculating a resource usage rate of each of the component carriers separately, and calculating, according to the resource occupancy rate and the PSD of each component carrier, a priority weight of each component carrier, and using the priority to be scheduled from the UE to be scheduled. PCell A component carrier with the smallest priority weight is selected from each SCell, and one component carrier is arbitrarily selected from the filtered component carriers as a component carrier for performing uplink scheduling.
The method according to claim 1, wherein if the transmission parameter is a path loss, the calculating the transmission parameters of the UE to be scheduled on each component carrier that is aggregated by the carrier, respectively, includes:

Calculating, according to the PH reported by the UE to be scheduled, a path loss of each of the component carriers of the to-be-scheduled UE; or

And determining a path loss of each of the component carriers of the to-be-scheduled UE according to the reference signal received power RSRP of the to-be-scheduled UE on each component carrier.
The method according to claim 5, wherein the PCell and each of the UEs to be scheduled are used according to a preset determination rule based on transmission parameters of the UE to be scheduled on each component carrier. In the SCell, the component carrier that performs uplink scheduling is determined, and specifically includes:

Determining, according to the path loss of the to-be-scheduled UE on each component carrier, whether a component carrier whose path loss is not greater than a preset second threshold is selected from the PCell and each SCell used by the to-be-scheduled UE;

If yes, the filtered component carrier is used as the component carrier for uplink scheduling;

Otherwise, the component carrier performing uplink scheduling is determined from the PCell and each SCell used by the to-be-scheduled UE according to a preset determination rule.
The method according to claim 6, wherein the component carrier that performs uplink scheduling is determined from the PCell and each SCell used by the to-be-scheduled UE according to a preset determination rule, and specifically includes:

Selecting a component carrier with the smallest path loss from the PCell and each SCell used by the UE to be scheduled according to the path loss of the UE to be scheduled on each component carrier, and arbitrarily selecting one of the selected component carriers. The component carrier is used as a component carrier for uplink scheduling; or

Calculating a resource occupancy rate of each of the component carriers, and selecting a component carrier with the smallest resource occupancy rate from the PCell and each SCell used by the to-be-scheduled UE, and arbitrarily selecting one of the selected component carriers. The component carrier is used as a component carrier for uplink scheduling; or

Calculating, respectively, a resource usage rate of each of the component carriers, and calculating, according to the resource occupancy rate and the path loss of each component carrier, a priority weight of each component carrier, and from the to-be-scheduled UE The component carrier with the smallest priority weight is selected from the PCell and each SCell, and one component carrier is arbitrarily selected from the filtered component carriers as the component carrier for uplink scheduling.
An uplink scheduling device for carrier aggregation, comprising:

a calculation unit, configured to separately calculate a transmission parameter of the UE to be scheduled UE on each component carrier that is aggregated by the carrier; wherein the component carrier includes a primary member carrier PCell and a secondary member used by the to-be-scheduled UE Wave SCell;

a determining unit, configured to determine, according to a preset determining rule, a component carrier that performs uplink scheduling according to a preset determining rule, according to a PCell and each SCell used by the to-be-scheduled UE ;

And a scheduling unit, configured to perform resource allocation based on the component carrier that performs uplink scheduling.
The device according to claim 8, wherein if the transmission parameter is a maximum transmission bandwidth, the calculating unit is specifically configured to:

Calculating, according to the latest received power space PH reported by the to-be-scheduled UE, a power spectral density PSD of the to-be-scheduled UE on each component carrier;

And calculating, according to the PSD of the to-be-scheduled UE on each component carrier, a maximum transmission bandwidth of the to-be-scheduled UE on each component carrier.
The device according to claim 9, wherein the determining unit is specifically configured to:

Determining, according to the maximum transmission bandwidth of the UE to be scheduled on each component carrier, whether to select a component carrier whose maximum transmission bandwidth is not less than a preset first threshold value from the PCell and each SCell used by the to-be-scheduled UE ;

If yes, the filtered component carrier is used as the component carrier for uplink scheduling;

Otherwise, the component carrier performing uplink scheduling is determined from the PCell and each SCell used by the to-be-scheduled UE according to a preset determination rule.
The device according to claim 10, wherein the determining unit is specifically configured to:

And selecting, according to the PSD of the to-be-scheduled UE on each component carrier, the component carrier with the smallest PSD from the PCell and each SCell used by the to-be-scheduled UE, and arbitrarily selecting one member from the selected component carriers. The carrier is used as a component carrier for uplink scheduling; or

Calculating a resource occupancy rate of each of the component carriers, and selecting a component carrier with the smallest resource occupancy rate from the PCell and each SCell used by the to-be-scheduled UE, and selecting one of the selected component carriers. The component carrier is used as a component carrier for uplink scheduling; or

Calculating a resource usage rate of each of the component carriers separately, and calculating, according to the resource occupancy rate and the PSD of each component carrier, a priority weight of each component carrier, and using the priority to be scheduled from the UE to be scheduled. The member carrier with the smallest priority weight is selected from the PCell and each SCell, and one component carrier is arbitrarily selected from the filtered component carriers as the component carrier for uplink scheduling.
The device according to claim 8, wherein if the transmission parameter is a path loss, the calculating unit is specifically configured to:

Calculating, according to the PH reported by the UE to be scheduled, a path loss of each of the component carriers of the to-be-scheduled UE; or

And determining a path loss of each of the component carriers of the to-be-scheduled UE according to the reference signal received power RSRP of the to-be-scheduled UE on each component carrier.
The device according to claim 12, wherein the determining unit is specifically configured to:

Determining, according to the path loss of the to-be-scheduled UE on each component carrier, whether a component carrier whose path loss is not greater than a preset second threshold is selected from the PCell and each SCell used by the to-be-scheduled UE;

If yes, the filtered component carrier is used as the component carrier for uplink scheduling;

Otherwise, the component carrier performing uplink scheduling is determined from the PCell and each SCell used by the to-be-scheduled UE according to a preset determination rule.
The device according to claim 13, wherein the determining unit is specifically configured to:

Selecting a component carrier with the smallest path loss from the PCell and each SCell used by the UE to be scheduled according to the path loss of the UE to be scheduled on each component carrier, and arbitrarily selecting one of the selected component carriers. The component carrier is used as a component carrier for uplink scheduling; or

Calculating a resource occupancy rate of each of the component carriers, and selecting a component carrier with the smallest resource occupancy rate from the PCell and each SCell used by the to-be-scheduled UE, and arbitrarily selecting one of the selected component carriers. The component carrier is used as a component carrier for uplink scheduling; or

Calculating, respectively, a resource usage rate of each of the component carriers, and calculating, according to the resource occupancy rate and the path loss of each component carrier, a priority weight of each component carrier, and from the to-be-scheduled UE The component carrier with the smallest priority weight is selected from the PCell and each SCell, and one component carrier is arbitrarily selected from the filtered component carriers as the component carrier for uplink scheduling.
An uplink scheduling device for carrier aggregation, comprising: a processor, a transceiver, and a memory, wherein

A processor for reading a program in the memory, performing the following process:

Calculating, respectively, a transmission parameter of the to-be-scheduled user equipment UE on each component carrier that is aggregated by the carrier; wherein the component carrier includes a primary component carrier PCell and a secondary component carrier SCell used by the to-be-scheduled UE; Configuring a transmission parameter of the UE on each component carrier, and determining, according to a preset determination rule, a component carrier that performs uplink scheduling from a PCell and each SCell used by the to-be-scheduled UE; Carrier, resource allocation;

A transceiver for receiving and transmitting data under the control of a processor.
The device according to claim 15, wherein if the transmission parameter is a maximum transmission bandwidth, the processor is specifically configured to:

Calculating the to-be-scheduled UE separately according to the power space PH reported by the UE to be scheduled that is received last time a power spectral density PSD on each component carrier; and calculating, according to the PSD of the UE to be scheduled on each component carrier, a maximum transmission bandwidth of each of the component carriers to be scheduled.
The device according to claim 16, wherein the processor is specifically configured to:

Determining, according to the maximum transmission bandwidth of the UE to be scheduled on each component carrier, whether to select a component carrier whose maximum transmission bandwidth is not less than a preset first threshold value from the PCell and each SCell used by the to-be-scheduled UE ;

If yes, the filtered component carrier is used as the component carrier for uplink scheduling;

Otherwise, the component carrier performing uplink scheduling is determined from the PCell and each SCell used by the to-be-scheduled UE according to a preset determination rule.
The device according to claim 17, wherein the processor is specifically configured to:

And selecting, according to the PSD of the to-be-scheduled UE on each component carrier, the component carrier with the smallest PSD from the PCell and each SCell used by the to-be-scheduled UE, and arbitrarily selecting one member from the selected component carriers. The carrier is used as a component carrier for uplink scheduling; or

Calculating a resource occupancy rate of each of the component carriers, and selecting a component carrier with the smallest resource occupancy rate from the PCell and each SCell used by the to-be-scheduled UE, and selecting one of the selected component carriers. The component carrier is used as a component carrier for uplink scheduling; or

Calculating a resource usage rate of each of the component carriers separately, and calculating, according to the resource occupancy rate and the PSD of each component carrier, a priority weight of each component carrier, and using the priority to be scheduled from the UE to be scheduled. The member carrier with the smallest priority weight is selected from the PCell and each SCell, and one component carrier is arbitrarily selected from the filtered component carriers as the component carrier for uplink scheduling.
The device according to claim 15, wherein if the transmission parameter is a path loss, the processor is specifically configured to:

Calculating, according to the PH reported by the UE to be scheduled, a path loss of each of the component carriers of the to-be-scheduled UE; or

And determining a path loss of each of the component carriers of the to-be-scheduled UE according to the reference signal received power RSRP of the to-be-scheduled UE on each component carrier.
The device according to claim 19, wherein the processor is specifically configured to:

Determining, according to the path loss of the to-be-scheduled UE on each component carrier, whether a component carrier whose path loss is not greater than a preset second threshold is selected from the PCell and each SCell used by the to-be-scheduled UE;

If yes, the filtered component carrier is used as the component carrier for uplink scheduling;

Otherwise, the component carrier performing uplink scheduling is determined from the PCell and each SCell used by the to-be-scheduled UE according to a preset determination rule.
The device according to claim 20, wherein the processor is specifically configured to:

Selecting a component carrier with the smallest path loss from the PCell and each SCell used by the UE to be scheduled according to the path loss of the UE to be scheduled on each component carrier, and arbitrarily selecting one of the selected component carriers. The component carrier is used as a component carrier for uplink scheduling; or

Calculating a resource occupancy rate of each of the component carriers, and selecting a component carrier with the smallest resource occupancy rate from the PCell and each SCell used by the to-be-scheduled UE, and arbitrarily selecting one of the selected component carriers. The component carrier is used as a component carrier for uplink scheduling; or

Calculating, respectively, a resource usage rate of each of the component carriers, and calculating, according to the resource occupancy rate and the path loss of each component carrier, a priority weight of each component carrier, and from the to-be-scheduled UE The component carrier with the smallest priority weight is selected from the PCell and each SCell, and one component carrier is arbitrarily selected from the filtered component carriers as the component carrier for uplink scheduling.