CN105578595B - Carrier resource dynamic adjusting method and device based on carrier wave polymerization - Google Patents

Abstract

The present invention provides a method and device for dynamically adjusting carrier resources based on carrier aggregation, wherein the method includes: determining the allocation and use information of all physical resource blocks PRB in a carrier; adjusting according to the preset rules corresponding to the allocation and use information The number of PRBs allocated by the carrier to the UE in the primary cell with the current cell as the primary cell, so that at least one UE in the secondary cell with the current cell as the secondary cell can use the adjusted PRBs in the carrier that are not allocated to the UE in the primary cell , the preset rules include: rules set according to the preset heavy load decision threshold LC_Threshold; wherein, the UE in the secondary cell is a UE supporting carrier aggregation, and LC_Threshold∈[0,1]. The above method can solve the problem of resource allocation under carrier aggregation, reduce the number of dynamic adjustments of carrier resources, avoid packet loss of retransmission data, and give priority to guaranteeing the frequency band resources of user equipment with the carrier as the main cell, while realizing the effective utilization of frequency band resources At the same time, try to ensure the performance of user equipment.

Description

Method and device for dynamic adjustment of carrier resources based on carrier aggregation

technical field

The present invention relates to communication technology, in particular to a method and device for dynamically adjusting carrier resources based on carrier aggregation.

Background technique

The maximum transmission bandwidth supported by the Long Term Evolution (LTE for short) system is 20MHz. In order to provide mobile users with a higher data rate, the Long Term Evolution Advance (LTE-A for short) system proposes carrier aggregation technology. (Carrier Aggregation, referred to as CA), the purpose of which is to provide a larger bandwidth for a user equipment (User Equipment, referred to as UE) with corresponding capabilities, and increase the peak rate of the user equipment. The carrier aggregation technology aggregates two or more component carriers (Component Carriers, CC for short) to support a transmission bandwidth greater than 20 MHz and a maximum of 100 MHz. The LTE-A system using carrier aggregation technology is a multi-carrier system.

A component carrier CC represents an uplink carrier or a downlink carrier, and an uplink CC and a downlink CC are associated through a certain correspondence to form a cell (Cell), so carrier aggregation is also called cell aggregation (CellAggregation). In order to facilitate the management of the component carriers, the component carriers are divided into a primary component carrier (Primary CC, PCC for short) and a secondary component carrier (Secondary CC, SCC for short). The role of the downlink primary component carrier PCC includes: establishing a radio resource control protocol (Radio Resource Control, RRC for short) signaling connection, non-access stratum (Non-Access Stratum, NAS for short) mobility, and inputting security parameters; The uplink primary component carrier PCC is used to send control information of the physical layer. The downlink PCC and the uplink PCC are associated together to form a primary cell (Primary Cell, PCell for short), and the downlink SCC and an optional uplink SCC are associated together to form a secondary cell (Secondary Cell, short for SCell).

Through the carrier aggregation technology, the UE can perform data transmission on the PCC and one or more SCCs. Therefore, for a carrier (that is, a cell) in a carrier aggregation mode, there are two types of UEs: one is based on the carrier The UE in the primary cell of the primary cell refers to the UE in the secondary cell with the carrier as the secondary cell. The existing resource scheduling methods for these two types of UEs are: polling algorithm, maximum signal-to-noise ratio algorithm, proportional fairness algorithm, etc. It is impossible to arrange the priorities of these two types of different UEs, and it is impossible to arrange the resources of these two types of different UEs. Differentiated processing for allocation cannot meet the requirements of service quality required by each UE.

Contents of the invention

In order to solve the above-mentioned technical problems, the present invention provides a method and device for dynamically adjusting carrier resources based on carrier aggregation, which can solve the problem of user equipment using the carrier as the primary cell and user equipment using the carrier as the secondary cell in each carrier in the carrier aggregation mode. resource allocation problem, and can reduce the number of dynamic adjustments of carrier resources, avoid packet loss of retransmission data, give priority to guaranteeing the frequency band resources of user equipment in the main cell of the carrier, and ensure the effective use of frequency band resources at the same time as much as possible. performance.

In a first aspect, the present invention provides a method for dynamically adjusting carrier resources based on carrier aggregation, including:

Determine the allocation and use information of all PRBs in a carrier;

According to the preset rule corresponding to the allocation and use information, adjust the number of PRBs allocated by the carrier to the UE in the primary cell with the current cell as the primary cell, so that at least one UE in the secondary cell with the current cell as the secondary cell can use all The adjusted PRBs in the carrier that are not allocated to the UE in the primary cell, the preset rules include: an adjustment rule set according to the preset heavy load decision threshold LC_Threshold;

Wherein, the UE in the secondary cell is a UE supporting carrier aggregation, and LC_Threshold∈[0,1].

Optionally, the determining the allocation and usage information of all PRBs in a carrier includes:

Determine that all PRBs in a carrier are not used or are used by UEs in the primary cell;

or,

It is determined that all PRBs in a carrier are used by UEs in the primary cell and UEs in the secondary cell.

Optionally, the determining that all PRBs in a carrier are not used or are used by UEs in the primary cell includes:

When α=0, it is determined that all PRBs in the carrier are not used or are used by the UE in the primary cell;

Wherein, α is the ratio of the number of PRBs of the UE downlink/uplink available resource CC_SCell of the carrier to the total PRBs of all current physical downlink/uplink shared channel resources, α∈[0,1];

Correspondingly, adjusting the number of PRBs allocated by the carrier to the UE in the primary cell with the current cell as the primary cell according to the preset rule corresponding to the allocation and use information includes:

Update the α value to get α=PCell_Res_Min;

Wherein, PCell_Res_Min is the first preconfigured parameter, which is the minimum ratio of available frequency band resources of the secondary cell, PCell_Res_Min∈[0,1].

Optionally, the determining that all PRBs in a carrier are used by UEs in the primary cell and UEs in the secondary cell includes:

When α≠0, it is determined that all PRBs in the carrier are used by UEs in the primary cell and UEs in the secondary cell;

Wherein, α is the ratio of the number of PRBs of the UE downlink/uplink available resource CC_SCell of the carrier to the total PRBs of all current physical downlink/uplink shared channel resources, α∈[0,1];

Correspondingly, adjusting the number of PRBs allocated by the carrier to the UE in the primary cell with the current cell as the primary cell according to the preset rule corresponding to the allocation and use information includes:

In each dynamic adjustment period after adding the UE in the secondary cell, when Load_CC_PCell≥LC_Threshold, adjust the value of α according to the first formula;

or,

In each dynamic adjustment period after adding the secondary cell UE, when Load_CC_PCell<LC_Threshold, and Load_CC_SCell>LC_Threshold, Load'_CC_PCell≥LC_Threshold, do not adjust the α value;

or,

In each dynamic adjustment period after adding the secondary cell UE, when Load_CC_PCell<LC_Threshold, and Load_CC_SCell>LC_Threshold, Load'_CC_PCell<LC_Threshold, adjust the value of α according to the second formula;

Among them, Load_CC_PCell is the total load of each service of UE in the primary cell of the carrier calculated according to the load evaluation module in radio resource management, and Load_CC_SCell is the total load of each service of UE in the secondary cell of the carrier calculated according to the load evaluation module in radio resource management Load'_CC_PCell is the total load of each service of the main cell UE of the carrier calculated according to the load evaluation module in the radio resource management after adjusting the value of α according to the second formula, Load_CC_PCell, Load'_CC_PCell, Load_CC_SCell∈ [0,1];

The first formula is:

α = α – delta;

The second formula is:

α = α + delta;

Wherein, delta is a second preconfigured parameter, which is a step size dynamically adjusted for carrier resources, and delta∈[0,1].

In a second aspect, the present invention provides a device for dynamically adjusting carrier resources based on carrier aggregation, including:

A determining module, configured to determine the allocation and use information of all PRBs in a carrier;

An adjustment module, configured to adjust the number of PRBs allocated by the carrier to the user equipment UE in the primary cell with the current cell as the primary cell according to the preset rule corresponding to the allocation and use information, so as to realize at least one secondary cell with the current cell as the secondary cell The UE in the cell can use the adjusted PRBs in the carrier that are not allocated to the UE in the primary cell, and the preset rules include: an adjustment rule set according to the preset heavy load decision threshold LC_Threshold;

Wherein, the UE in the secondary cell is a UE supporting carrier aggregation, and LC_Threshold∈[0,1].

Optionally, the determining module is specifically used for

Determine that all PRBs in a carrier are not used or are used by UEs in the primary cell;

or,

It is determined that all PRBs in a carrier are used by UEs in the primary cell and UEs in the secondary cell.

Optionally, the determining module is specifically configured to determine that all PRBs in a carrier are not used or are used by UEs in the primary cell, including:

When α=0, it is determined that all PRBs in the carrier are not used or are used by the UE in the primary cell;

Wherein, α is the ratio of the number of PRBs of the UE downlink/uplink available resource CC_SCell of the carrier to the total PRBs of all current physical downlink/uplink shared channel resources, α∈[0,1];

Correspondingly, the adjustment module is specifically used for

Update the α value to get α=PCell_Res_Min;

Wherein, PCell_Res_Min is the first preconfigured parameter, which is the minimum ratio of available frequency band resources of the secondary cell, PCell_Res_Min∈[0,1].

Optionally, the determining module is specifically configured to determine that all PRBs in a carrier are used by UEs in the primary cell and UEs in the secondary cell, including:

When α≠0, it is determined that all PRBs in the carrier are used by UEs in the primary cell and UEs in the secondary cell;

Wherein, α is the ratio of the number of PRBs of the UE downlink/uplink available resource CC_SCell of the carrier to the total PRBs of all current physical downlink/uplink shared channel resources, α∈[0,1];

Correspondingly, the adjustment module is specifically used for

In each dynamic adjustment period after adding the UE in the secondary cell, when Load_CC_PCell≥LC_Threshold, adjust the value of α according to the first formula;

or,

In each dynamic adjustment period after adding the secondary cell UE, when Load_CC_PCell<LC_Threshold, and Load_CC_SCell>LC_Threshold, Load'_CC_PCell≥LC_Threshold, do not adjust the α value;

or,

In each dynamic adjustment period after adding the secondary cell UE, when Load_CC_PCell<LC_Threshold, and Load_CC_SCell>LC_Threshold, Load'_CC_PCell<LC_Threshold, adjust the value of α according to the second formula;

Among them, Load_CC_PCell is the total load of each service of UE in the primary cell of the carrier calculated according to the load evaluation module in radio resource management, and Load_CC_SCell is the total load of each service of UE in the secondary cell of the carrier calculated according to the load evaluation module in radio resource management Load'_CC_PCell is the total load of each service of the main cell UE of the carrier calculated according to the load evaluation module in the radio resource management after adjusting the value of α according to the second formula, Load_CC_PCell, Load'_CC_PCell, Load_CC_SCell∈ [0,1];

The first formula is:

α = α – delta;

The second formula is:

α = α + delta;

Wherein, delta is a second preconfigured parameter, which is a step size dynamically adjusted for carrier resources, and delta∈[0,1].

It can be known from the above technical solution that the method and device for dynamically adjusting carrier resources based on carrier aggregation of the present invention adjusts the carrier by determining the allocation and use information of all PRBs in a carrier and according to the preset rules corresponding to the allocation and use information. The number of PRBs allocated to the UE in the primary cell with the current cell as the primary cell, so that at least one UE in the secondary cell with the current cell as the secondary cell can use the adjusted PRBs in the carrier that are not allocated to the UE in the primary cell. The set rules include: the rules set according to the preset heavy load decision threshold LC_Threshold, thus, the resource allocation problem of the user equipment with the carrier as the primary cell and the user equipment with the carrier as the secondary cell in each carrier in the carrier aggregation mode can be solved , and can reduce the number of dynamic adjustments of carrier resources, avoid packet loss of retransmission data, give priority to guaranteeing the frequency band resources of user equipment in the main cell of the carrier, and ensure the performance of user equipment as much as possible while realizing effective utilization of frequency band resources.

Description of drawings

FIG. 1 is an example diagram of resource configuration of a primary cell UE with a carrier CCn as a primary cell and a secondary cell UE with a CCn as a secondary cell provided by the prior art;

FIG. 2 is a schematic flowchart of a method for dynamically adjusting carrier resources based on carrier aggregation provided by an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of an apparatus for dynamically adjusting carrier resources based on carrier aggregation provided by an embodiment of the present invention.

Detailed ways

In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

In the prior art, in addition to using the existing resource scheduling method to schedule two types of UEs on the same carrier without distinguishing, another method is disclosed: from the perspective of radio resource management (Radio Resource Management, referred to as RRM) All available frequency band resources are divided into two parts. Figure 1 shows an example resource configuration diagram of a primary cell UE with carrier CCn as the primary cell and a secondary cell UE with CCn as the secondary cell provided by the prior art, as shown in Figure 1 One part is used for UEs in the primary cell using the carrier as the primary cell, and the other part is used for UEs in the secondary cell using the carrier as the secondary cell. This can effectively implement differential processing of the two types of users and ensure user performance. However, how to divide the carrier frequency band resources is a problem to be solved.

The method in the prior art is to compare the total load of each service of the UE in the primary cell with the carrier as the primary cell and the total load of each service of the UE in the secondary cell with the carrier as the secondary cell, and perform two calculations according to the calculated load ratio. Partial allocation of frequency band resources.

The disadvantage of this prior art method is that: as the load ratio of the two types of UEs changes, the adjustment of the frequency band resources will be frequently triggered, which will easily cause loss of data retransmission, and it is difficult to ensure that the carrier is used as the primary cell when the load is heavy. The performance of the primary cell UE.

The implementation of the present invention is to divide the entire frequency band of the carrier into two parts for users using the carrier as the primary cell and users using the carrier as the secondary cell. For use by users of the secondary cell, the frequency band division can be carried out based on the total load of each service of the user using the carrier as the primary cell and the total load of each service of the user using the carrier as the secondary cell in the load evaluation module in the radio resource management Dynamic Adjustment.

FIG. 2 shows a schematic flowchart of a method for dynamically adjusting carrier resources based on carrier aggregation provided by an embodiment of the present invention. As shown in FIG. 2 , the method for dynamically adjusting carrier resources based on carrier aggregation in this embodiment is as follows.

201. Determine allocation and use information of all PRBs in a carrier.

It should be noted that when the cell CC is established, in the Long Term Evolution LTE system there is only the primary cell UE that uses the carrier cell as the primary cell by default, so the initial value of α is 0.

202. According to the preset rule corresponding to the allocation and use information, adjust the number of PRBs allocated by the carrier to the user equipment UE in the primary cell with the current cell as the primary cell, so that at least one UE in the secondary cell with the current cell as the secondary cell can Using the adjusted PRBs in the carrier that are not allocated to the UE in the primary cell, the preset rule includes: an adjustment rule set according to a preset heavy load decision threshold LC_Threshold.

Wherein, the UE in the secondary cell is a UE supporting carrier aggregation, and LC_Threshold∈[0,1].

It can be understood that the LC_Threshold in this embodiment can be preset according to simulation or actual measurement experience.

In the method for dynamically adjusting carrier resources based on carrier aggregation in this embodiment, by determining the allocation and use information of all PRBs in a carrier, according to the preset rules corresponding to the allocation and use information, adjust the allocation of the carrier to the current cell. The number of PRBs of the user equipment UE in the primary cell of the cell, so that at least one UE in the secondary cell with the current cell as the secondary cell can use the adjusted PRBs in the carrier that are not allocated to the UE in the primary cell. The preset rules include: according to the preset The rules set by the heavy load decision threshold LC_Threshold can solve the resource allocation problem of the user equipment with the carrier as the primary cell and the user equipment with the carrier as the secondary cell in each carrier in the carrier aggregation mode, and can reduce the number of dynamic adjustments of carrier resources , avoid packet loss of retransmission data, give priority to ensuring the frequency band resources of the user equipment in the main cell of the carrier, and ensure the performance of the user equipment as much as possible while realizing the effective utilization of the frequency band resources. .

In a specific application, the above step 201 may specifically be: determining that all PRBs in a carrier are not used or are used by UEs in the primary cell, which may include:

When α=0, it is determined that all PRBs in the carrier are not used or are used by the UE in the primary cell;

Wherein, α is the ratio of the number of PRBs of the UE downlink/uplink available resource CC_SCell of the carrier to the total PRBs of all current physical downlink/uplink shared channel resources, α∈[0,1];

Correspondingly, the above step 202 may include:

Update the α value to get α=PCell_Res_Min;

Wherein, PCell_Res_Min is the first preconfigured parameter, which is the minimum ratio of available frequency band resources of the secondary cell, PCell_Res_Min∈[0,1].

In another specific application, the above step 201 may specifically be: determining that all PRBs in a carrier are used by UEs in the primary cell and UEs in the secondary cell, which may include:

When α≠0, it is determined that all PRBs in the carrier are used by UEs in the primary cell and UEs in the secondary cell;

Wherein, α is the ratio of the number of PRBs of the UE downlink/uplink available resource CC_SCell of the carrier to the total PRBs of all current physical downlink/uplink shared channel resources, α∈[0,1];

Correspondingly, the above step 202 may include:

In each dynamic adjustment period after adding the UE in the secondary cell, when Load_CC_PCell≥LC_Threshold, adjust the value of α according to the first formula;

or,

In each dynamic adjustment period after adding the secondary cell UE, when Load_CC_PCell<LC_Threshold, and Load_CC_SCell>LC_Threshold, Load'_CC_PCell≥LC_Threshold, do not adjust the α value;

or,

In each dynamic adjustment period after adding the secondary cell UE, when Load_CC_PCell<LC_Threshold, and Load_CC_SCell>LC_Threshold, Load'_CC_PCell<LC_Threshold, adjust the value of α according to the second formula;

Among them, Load_CC_PCell is the total load of each service of UE in the primary cell of the carrier calculated according to the load evaluation module in radio resource management, and Load_CC_SCell is the total load of each service of UE in the secondary cell of the carrier calculated according to the load evaluation module in radio resource management Load'_CC_PCell is the total load of each service of the main cell UE of the carrier calculated according to the load evaluation module in the radio resource management after adjusting the value of α according to the second formula, Load_CC_PCell, Load'_CC_PCell, Load_CC_SCell∈ [0,1];

The first formula is:

α = α – delta;

The second formula is:

α = α + delta;

Wherein, delta is a second preconfigured parameter, which is a step size dynamically adjusted for carrier resources, and delta∈[0,1].

For example, the first pre-configured parameters and the second pre-configured parameters in this embodiment can be the configuration parameters of the operation and maintenance system OM, respectively, and they can be preset according to simulation or actual measurement experience. The operation and maintenance system OM is a prior art It already exists in the Long Term Evolution LTE system.

It should be noted that, in this embodiment, before adjusting the value of α, the primary cell of the carrier can be obtained assuming that the value of α is adjusted according to the second formula and calculated according to the load evaluation module in the radio resource management The total load Load'_CC_PCell of each service of the UE.

It can be understood that, in this embodiment, the transmission time interval TTI of each dynamic adjustment period is 1 ms.

It can be understood that the load evaluation module in the radio resource management of this embodiment already exists in the long-term evolution LTE system of the prior art, and Load_CC_SCell is the secondary cell of the carrier calculated according to the load evaluation module in the radio resource management The total load of each service of the UE, Load_CC_SCell∈[0,1], and the frequency band changes of Load_CC_PCell and Load_CC_SCell do not affect LC_Threshold.

The method for dynamically adjusting carrier resources based on carrier aggregation in this embodiment can solve the problem of resource allocation between the user equipment with the carrier as the primary cell and the user equipment with the carrier as the secondary cell in each carrier in the carrier aggregation mode, and can reduce carrier resources. Dynamically adjust the number of times to avoid packet loss of retransmitted data, give priority to ensuring the frequency band resources of the user equipment in the main cell of the carrier, and ensure the performance of the user equipment as much as possible while realizing the effective use of frequency band resources.

FIG. 3 shows a schematic structural diagram of an apparatus for dynamically adjusting carrier resources based on carrier aggregation provided by an embodiment of the present invention. As shown in FIG. 3 , the apparatus for dynamically adjusting carrier resources based on carrier aggregation in this embodiment includes: a determination module 31 and adjustment module 32;

A determining module 31, configured to determine allocation and use information of all PRBs in a carrier;

The adjustment module 32 is configured to adjust the number of PRBs allocated by the carrier to the user equipment UE in the primary cell with the current cell as the primary cell according to the preset rule corresponding to the allocation and use information, so as to realize at least one PRB with the current cell as the secondary cell. The secondary cell UE of the cell can use the adjusted PRBs in the carrier that are not allocated to the primary cell UE, and the preset rules include: adjustment rules set according to the preset heavy load decision threshold LC_Threshold;

Wherein, the UE in the secondary cell is a UE supporting carrier aggregation, and LC_Threshold∈[0,1].

It should be noted that, in the apparatus of this embodiment, when the cell CC is established, in the Long Term Evolution LTE system, there is only the primary cell UE that uses the carrier cell as the primary cell by default, so the initial value of α is 0.

It can be understood that the LC_Threshold in this embodiment can be preset according to simulation or actual measurement experience.

In a specific application, the determining module 31 may be specifically configured to determine that all PRBs in a carrier are not used or are used by UEs in the primary cell, which may include:

When α=0, it is determined that all PRBs in the carrier are not used or are used by the UE in the primary cell;

Wherein, α is the ratio of the number of PRBs of the UE downlink/uplink available resource CC_SCell of the carrier to the total PRBs of all current physical downlink/uplink shared channel resources, α∈[0,1];

Correspondingly, the adjustment module 32 can be specifically used for

Update the α value to get α=PCell_Res_Min;

Wherein, PCell_Res_Min is the first preconfigured parameter, which is the minimum ratio of available frequency band resources of the secondary cell, PCell_Res_Min∈[0,1].

In another specific application, the determining module 31 may be specifically configured to determine that all PRBs in a carrier are used by UEs in the primary cell and UEs in the secondary cell, which may include:

When α≠0, it is determined that all PRBs in the carrier are used by UEs in the primary cell and UEs in the secondary cell;

Wherein, α is the ratio of the number of PRBs of the UE downlink/uplink available resource CC_SCell of the carrier to the total PRBs of all current physical downlink/uplink shared channel resources, α∈[0,1];

Correspondingly, the adjustment module 32 can be specifically used for

In each dynamic adjustment period after adding the UE in the secondary cell, when Load_CC_PCell≥LC_Threshold, adjust the value of α according to the first formula;

or,

In each dynamic adjustment period after adding the secondary cell UE, when Load_CC_PCell<LC_Threshold, and Load_CC_SCell>LC_Threshold, Load'_CC_PCell≥LC_Threshold, do not adjust the α value;

or,

In each dynamic adjustment period after adding the secondary cell UE, when Load_CC_PCell<LC_Threshold, and Load_CC_SCell>LC_Threshold, Load'_CC_PCell<LC_Threshold, adjust the value of α according to the second formula;

Among them, Load_CC_PCell is the total load of each service of UE in the primary cell of the carrier calculated according to the load evaluation module in radio resource management, and Load_CC_SCell is the total load of each service of UE in the secondary cell of the carrier calculated according to the load evaluation module in radio resource management Load'_CC_PCell is the total load of each service of the main cell UE of the carrier calculated according to the load evaluation module in the radio resource management after adjusting the value of α according to the second formula, Load_CC_PCell, Load'_CC_PCell, Load_CC_SCell∈ [0,1];

The first formula is:

α = α – delta;

The second formula is:

α = α + delta;

Wherein, delta is a second preconfigured parameter, which is a step size dynamically adjusted for carrier resources, and delta∈[0,1].

For example, the first pre-configured parameters and the second pre-configured parameters in this embodiment can be the configuration parameters of the operation and maintenance system OM, respectively, and they can be preset according to simulation or actual measurement experience. The operation and maintenance system OM is a prior art It already exists in the Long Term Evolution LTE system.

It should be noted that, in this embodiment, before adjusting the value of α, the primary cell of the carrier can be obtained assuming that the value of α is adjusted according to the second formula and calculated according to the load evaluation module in the radio resource management The total load Load'_CC_PCell of each service of the UE.

It can be understood that, in this embodiment, the transmission time interval TTI of each dynamic adjustment period is 1 ms.

It can be understood that the load evaluation module in the radio resource management of this embodiment already exists in the long-term evolution LTE system of the prior art, and Load_CC_SCell is the secondary cell of the carrier calculated according to the load evaluation module in the radio resource management The total load of each service of the UE, Load_CC_SCell∈[0,1], and the frequency band changes of Load_CC_PCell and Load_CC_SCell do not affect LC_Threshold.

The device for dynamically adjusting carrier resources based on carrier aggregation in this embodiment can solve the resource allocation problem of user equipment with the carrier as the primary cell and user equipment with the carrier as the secondary cell in each carrier in the carrier aggregation mode, and can reduce carrier resources Dynamically adjust the number of times to avoid packet loss of retransmitted data, give priority to guaranteeing the frequency band resources of the user equipment in the main cell of the carrier, and ensure the performance of the user equipment as much as possible while realizing the effective use of frequency band resources.

The apparatus for dynamically adjusting carrier resources based on carrier aggregation in this embodiment can be used to implement the technical solution of the aforementioned method embodiment shown in FIG. 2 , and its implementation principles and technical effects are similar, and will not be repeated here.

Those of ordinary skill in the art can understand that all or part of the steps for implementing the above method embodiments can be completed by program instructions and related hardware. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps including the above-mentioned method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other various media that can store program codes.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (2)

1. A method for dynamically adjusting carrier resources based on carrier aggregation is characterized by comprising the following steps:

determining the allocation use information of all Physical Resource Blocks (PRBs) in one carrier;

according to a preset rule corresponding to the allocation use information, the number of PRBs allocated to the primary cell User Equipment (UE) of the current cell as a primary cell by the carrier is adjusted, so that at least one secondary cell UE of the current cell as a secondary cell can use the adjusted PRBs which are not allocated to the primary cell UE in the carrier, and the preset rule comprises: adjusting rules set according to a preset heavy load judgment Threshold LC _ Threshold;

the UE of the auxiliary cell is the UE supporting carrier aggregation, and LC _ Threshold belongs to [0,1 ];

wherein the determining that all PRBs in one carrier are unused or used by a primary cell UE includes:

when α is 0, determining that all PRBs in the carrier are not used or used by the primary cell UE;

α is the proportion of the number of PRBs of the downlink/uplink available resource CC _ SCell of the carrier to the total PRBs of all the current physical downlink/uplink shared channel resources, wherein α belongs to [0,1 ];

correspondingly, the adjusting, according to the preset rule corresponding to the allocation usage information, the number of PRBs allocated to the primary cell UE using the current cell as the primary cell by the carrier includes:

updating α value to get α ═ PCell _ Res _ Min;

wherein, PCell _ Res _ Min is a first pre-configuration parameter and is the minimum proportion of the available frequency band resources of the secondary cell, and the PCell _ Res _ Min belongs to [0,1 ];

or,

the determining that all PRBs in one carrier are used by both the primary cell UE and the secondary cell UE includes:

when α ≠ 0, determining that all PRBs in the carrier are used by both the primary cell UE and the secondary cell UE;

α is the proportion of the number of PRBs of the downlink/uplink available resource CC _ SCell of the carrier to the total PRBs of all the current physical downlink/uplink shared channel resources, wherein α belongs to [0,1 ];

correspondingly, the adjusting, according to the preset rule corresponding to the allocation usage information, the number of PRBs allocated to the primary cell UE using the current cell as the primary cell by the carrier includes:

in each dynamic adjustment period after the auxiliary cell UE is added, when Load _ CC _ PCell is larger than or equal to LC _ Threshold, the value of α is adjusted according to a first formula;

or,

in each dynamic adjustment period after the secondary cell UE is added, when Load _ CC _ PCell < LC _ Threshold and Load _ CC _ SCell > LC _ Threshold, and Load' _ CC _ PCell is greater than or equal to LC _ Threshold, the value of α is not adjusted;

or,

in each dynamic adjustment period after the secondary cell UE is added, when Load _ CC _ PCell < LC _ Threshold, and Load _ CC _ SCell > LC _ Threshold, Load' _ CC _ PCell < LC _ Threshold, the value of α is adjusted according to a second formula;

wherein, Load _ CC _ PCell is the total Load of each service of the primary cell UE of the carrier calculated by the Load evaluation module in the radio resource management, Load _ CC _ SCell is the total Load of each service of the secondary cell UE of the carrier calculated by the Load evaluation module in the radio resource management, Load '_ CC _ PCell is the total Load of each service of the primary cell UE of the carrier calculated by the Load evaluation module in the radio resource management after the value of α is adjusted according to the second formula, and Load _ CC _ PCell, Load' _ CC _ PCell, and Load _ CC _ SCell are [0,1 ];

the first formula is:

α＝α–delta；

the second formula is:

α＝α+delta；

wherein, delta is a second pre-configuration parameter and is a carrier resource dynamic adjustment step size, and delta belongs to [0,1 ].

2. A carrier resource dynamic adjustment device based on carrier aggregation is characterized by comprising:

the device comprises a determining module, a determining module and a judging module, wherein the determining module is used for determining the allocation use information of all Physical Resource Blocks (PRBs) in one carrier;

an adjusting module, configured to adjust, according to a preset rule corresponding to the allocation usage information, the number of PRBs allocated to a primary cell UE in which a current cell is a primary cell, to at least one secondary cell UE in which the current cell is a secondary cell, where the adjusted PRBs not allocated to the primary cell UE in the carrier can be used by the at least one secondary cell UE in which the current cell is a secondary cell, where the preset rule includes: adjusting rules set according to a preset heavy load judgment Threshold LC _ Threshold;

the UE of the auxiliary cell is the UE supporting carrier aggregation, and LC _ Threshold belongs to [0,1 ];

the determining module is specifically configured to determine that all PRBs in one carrier are unused or used by a primary cell UE, and includes:

when α is 0, determining that all PRBs in the carrier are not used or used by the primary cell UE;

α is the proportion of the number of PRBs of the downlink/uplink available resource CC _ SCell of the carrier to the total PRBs of all the current physical downlink/uplink shared channel resources, wherein α belongs to [0,1 ];

accordingly, the adjustment module is particularly useful for

Updating α value to get α ═ PCell _ Res _ Min;

wherein, PCell _ Res _ Min is a first pre-configuration parameter and is the minimum proportion of the available frequency band resources of the secondary cell, and the PCell _ Res _ Min belongs to [0,1 ];

or,

the determining module is specifically configured to determine that all PRBs in one carrier are used by both the primary cell UE and the secondary cell UE, and includes:

when α ≠ 0, determining that all PRBs in the carrier are used by both the primary cell UE and the secondary cell UE;

α is the proportion of the number of PRBs of the downlink/uplink available resource CC _ SCell of the carrier to the total PRBs of all the current physical downlink/uplink shared channel resources, wherein α belongs to [0,1 ];

accordingly, the adjustment module is particularly useful for

In each dynamic adjustment period after the auxiliary cell UE is added, when Load _ CC _ PCell is larger than or equal to LC _ Threshold, the value of α is adjusted according to a first formula;

or,

in each dynamic adjustment period after the secondary cell UE is added, when Load _ CC _ PCell < LC _ Threshold and Load _ CC _ SCell > LC _ Threshold, and Load' _ CC _ PCell is greater than or equal to LC _ Threshold, the value of α is not adjusted;

or,

in each dynamic adjustment period after the secondary cell UE is added, when Load _ CC _ PCell < LC _ Threshold, and Load _ CC _ SCell > LC _ Threshold, Load' _ CC _ PCell < LC _ Threshold, the value of α is adjusted according to a second formula;

wherein, Load _ CC _ PCell is the total Load of each service of the primary cell UE of the carrier calculated by the Load evaluation module in the radio resource management, Load _ CC _ SCell is the total Load of each service of the secondary cell UE of the carrier calculated by the Load evaluation module in the radio resource management, Load '_ CC _ PCell is the total Load of each service of the primary cell UE of the carrier calculated by the Load evaluation module in the radio resource management after the value of α is adjusted according to the second formula, and Load _ CC _ PCell, Load' _ CC _ PCell, and Load _ CC _ SCell are [0,1 ];

the first formula is:

α＝α–delta；

the second formula is:

α＝α+delta；

wherein, delta is a second pre-configuration parameter and is a carrier resource dynamic adjustment step size, and delta belongs to [0,1 ].