KR20140017299A - Base station apparatus and control method thereof - Google Patents

Abstract

The present invention provides a base station and an operation method for the base station, capable of improving performances of scheduling a downlink and efficiency of allocating resources by determining a terminal expected to have many quantities of transmission data and in other words, which becomes a primary target for allocation based on a transmission time interval (TTI) and primarily allocating downlink radio resources to the terminal according to properties in which the TTI, which is set when data is transmitted, is set to be longer than the TTI, which is set when a signal is transmitted, when the TTI on the terminal is set with reference to the downlink. [Reference numerals] (110) Extraction unit; (120) Determination unit; (130) Confirmation unit; (140) Allocation unit

Description

TECHNICAL FIELD [0001] The present invention relates to a base station apparatus and a base station apparatus,

The present invention relates to LTE downlink scheduling, and more particularly, by determining a terminal that is expected to have a large amount of transmission data based on a transmission time interval (TTI) of each terminal and assigning downlink radio resources to the terminal first. In addition, the present invention relates to a base station apparatus and a method of operating the base station apparatus capable of increasing downlink scheduling performance and resource allocation efficiency.

Recently, operators often provide services based on multiple wireless technologies at the same time. In Korea, major operators are building and servicing networks by introducing WCDMA, CDMA, WiBro and WLAN (WiFi) technology, which is the nearest wireless network. In addition, LTE (Long Term Evolution) network is actively being introduced recently.

In addition, the introduction of a terminal (LTE terminal) capable of accessing an LTE network and using a data service is accelerating, and recently, VoLTE services supporting voice calls using the LTE network have emerged.

The downlink scheduling scheme for allocating downlink radio resources to a terminal in such an LTE network is performed by considering a factor such as radio resources, fairness, and channel environment that can be allocated to each terminal located within its own coverage by a base station. A method of allocating radio resources.

That is, the current downlink scheduling scheme does not consider the amount of data transmitted for each terminal that will receive data through the actually allocated radio resources in allocating downlink radio resources to each terminal.

Accordingly, in the present invention, when the base station allocates the downlink radio resource to each terminal, the downlink radio resource is preferentially allocated to the terminal that is expected to have a large amount of transmission data in consideration of the amount of transmission data for each terminal. This paper proposes a method to improve scheduling performance and resource allocation efficiency.

The present invention has been made in view of the above circumstances, and an object of the present invention is to determine a terminal that is expected to have a large amount of transmission data based on a transmission time interval (TTI) of each terminal and give priority to this terminal. By allocating downlink radio resources, it is possible to increase downlink scheduling performance and resource allocation efficiency.

Base station apparatus according to the first aspect of the present invention for achieving the above object, an extraction unit for extracting the window-related information related to a specific terminal; A determination unit that determines whether the extracted window related information corresponds to a preset priority allocation standard; And an allocator configured to preferentially allocate radio resources to the terminal when the window related information corresponds to a preset priority criteria.

Preferably, the window-related information may include a transmission time interval length for a transmission time interval of each of two or more windows set in the terminal.

Preferably, the determining unit, the window-related information when the number of windows having a transmission time interval length corresponding to a preset reference length among the two or more windows is equal to or greater than a specific reference ratio relative to the total number of the two or more windows. May be determined to correspond to the priority allocation criteria.

Preferably, the apparatus may further include a confirmation unit for confirming a resource size of a radio resource allocated to a window having a transmission time interval length corresponding to the preset reference length.

Preferably, the allocator may identify a minimum resource size among resource sizes of each radio resource identified by the identification unit, and may preferentially allocate a radio resource of at least the minimum resource size to the terminal.

Preferably, the allocation unit, the data size to be transmitted to the terminal is more than a predetermined size or the retransmission data to be transmitted to a terminal other than the terminal is not confirmed or the terminal or the base station apparatus to the terminal Only when it is not the time to transmit a control related signal associated with the, it is possible to preferentially allocate the radio resources to the terminal.

An operation method of a base station apparatus according to a second aspect of the present invention for achieving the above object; an extraction step of extracting window related information related to a specific terminal; A determination step of determining whether the extracted window related information corresponds to a preset priority allocation criterion; And assigning a radio resource to the terminal in advance if the window related information corresponds to a preset priority allocation criterion.

Preferably, the window-related information may include a transmission time interval length for a transmission time interval of each of two or more windows set in the terminal.

Preferably, in the determining step, if the number of windows having a transmission time interval length corresponding to a preset reference length among the two or more windows is equal to or greater than a specific reference ratio relative to the total number of the two or more windows, It can be determined that the information corresponds to the preset priority allocation criteria.

Preferably, the method may further include checking a resource size of a radio resource allocated to a window having a transmission time interval length corresponding to the preset reference length.

Preferably, the allocating step may identify a minimum resource size among resource sizes of each of the identified radio resources, and preferentially allocate a radio resource of at least the minimum resource size to the terminal.

Accordingly, according to the operation method of the base station apparatus and the base station apparatus of the present invention, in setting the TTI for the terminal in relation to the downlink, the TTI set when transmitting data is set longer than the TTI set when transmitting a signal. Due to the characteristics, based on the transmission time interval (TTI) of each terminal, the terminal that is expected to have a large amount of transmission data, that is, the terminal to be assigned first is determined and the downlink radio resource is preferentially allocated to the terminal. The scheduling performance and resource allocation efficiency can be improved.

1 is a configuration diagram illustrating a communication system including a base station apparatus according to a preferred embodiment of the present invention.
2 is a block diagram illustrating a configuration of a base station apparatus according to a preferred embodiment of the present invention.
3 is a control flowchart of a communication system including a base station apparatus according to a preferred embodiment of the present invention.
4 is a flowchart illustrating an operation method of a base station apparatus according to an exemplary embodiment of the present invention.
5 is an exemplary view showing a TTI window of each terminal considered in the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a diagram illustrating a communication system including a base station apparatus according to a preferred embodiment of the present invention.

As shown in FIG. 1, the communication system to which the present invention is reflected includes a plurality of terminals 10 and a base station apparatus 100 of the present invention.

Here, the plurality of terminals 10 are terminals capable of using various communication services through the base station apparatus 100, for example, a voice call service using a circuit network or a voice packet network service using a packet network (for example, using an LTE network). Voice call or VoIP service) or data packet network service using a packet network (for example, a general data service such as uploading / downloading content over an LTE network) may be used.

The plurality of terminals 10 will be described as including the terminal 1, terminal 2, and terminal 3 for convenience of description.

The base station apparatus 100 allocates downlink radio resources to a plurality of terminals 10, that is, terminals 1, 2, and 3 located in its own coverage, and allocates downlink radio resources allocated to the terminals 1, 2, and 3, respectively. Various data or various signals can be transmitted through.

Here, the scheduling procedure for allocating a downlink radio resource to a terminal in an existing base station apparatus will be described briefly.

Report the channel information (CQI, PMI, RI) measured by the terminal to the base station apparatus. Accordingly, the base station apparatus allocates radio resources to the terminal in consideration of elements such as radio resources, fairness, and channel information (CQI, PMI, RI) that can be allocated, and transmits the related allocation information to the terminal to recognize the terminal. do.

As such, when the downlink radio resource is allocated to the terminal, data or a signal is transmitted to the terminal using the radio resource allocated by the base station apparatus.

As described above, the method of allocating the downlink radio resource does not consider the amount of data transmitted to the terminal that will receive data through the actually allocated radio resource in allocating the downlink radio resource to the terminal.

Therefore, in the present invention, downlink radio resources are allocated in consideration of the amount of transmission data for the terminal in the conventional downlink radio resource allocation scheme as described above.

To this end, the base station apparatus 100 according to the embodiment of the present invention extracts window related information related to each of the terminals 1, 2, and 3 using the communication service through the base station apparatus 100.

In more detail, the base station apparatus 100 will transmit data or a signal to each of the terminals 1, 2, and 3 through the downlink radio resources previously allocated to the terminals 1, 2, and 3 at the earlier point in time. In other words, the base station apparatus 100 transmits data or a signal to each of the terminals 1, 2, and 3 based on a TTI window according to a transmission time interval (TTI). Will transmit.

Here, the transmission time interval (TTI) is set for the terminal, it can be set according to one of various existing TTI setting methods and a detailed description of the TTI setting method will be omitted.

However, when the TTI is set in the terminal according to various conventional TTI setting methods, the TTI has a result of being set longer than the TTI in the case of transmitting data to the terminal.

For example, the TTI windows for each of the terminals 1, 2, and 3 may be set as shown in FIG. That is, the TTI for the terminal 1, the TTI for the terminal 2, the TTI for the terminal 3 may be changed and set as time passes as shown in FIG.

Accordingly, the base station apparatus 100 extracts window related information related to each of the terminals 1, 2, and 3. Here, the window-related information may include a transmission time interval length for each transmission time interval of two or more windows set in the corresponding terminal.

For example, the base station apparatus 100 may, for each of the terminals 1, 2, and 3, relate to a window including a transmission time interval length for a transmission time interval (TTI) of each of two or more windows identified during a specific monitoring period (T). Information can be extracted.

Thus, referring to the terminal 1, the base station apparatus 100, the transmission time interval length (for example, a or b or c) of each of the seven TTI windows corresponding to the terminal 1 identified during the monitoring period (T) The window-related information of the terminal 1 including may be extracted.

As such, when the base station apparatus 100 extracts the window-related information for each of the terminals 1, 2, and 3, the base station apparatus 100 determines whether the extracted window-related information for each of the terminal 1, 2, and 3 corresponds to a preset priority allocation criterion. To judge.

Accordingly, the base station apparatus 100 preferentially allocates radio resources to a terminal (for example, terminal 1) in which window-related information corresponds to a preset priority allocation standard, and the terminal in which the window-related information does not correspond to the priority allocation criteria. For example, terminals 2 and 3 may be allocated radio resources according to a general existing method.

Hereinafter, the configuration of the base station apparatus according to the present invention will be described in more detail with reference to FIG. 2.

The base station apparatus 100 according to the preferred embodiment of the present invention determines whether the extraction unit 110 extracts window-related information related to a specific terminal and whether the extracted window-related information corresponds to a preset priority allocation criterion. The determining unit 120 and the allocation unit 140 for allocating the radio resources to the terminal when the window-related information corresponds to a predetermined priority allocation criterion.

Herein, the specific terminal refers to each of the plurality of terminals 10 using the communication service through the base station apparatus 100, and hereinafter, the terminal 1 will be described for convenience of description.

In addition, the base station apparatus 100 according to the preferred embodiment of the present invention may further include a verification unit 130.

As described above, the base station apparatus 100 transmits data or a signal to the terminal 1 based on a preset transmission time interval for the terminal 1, that is, a TTI window according to the TTI. The result is that the TTI in case of transmission is set longer than the TTI in case of transmitting a signal.

The extraction unit 110 extracts window related information related to a specific terminal, for example, terminal 1.

Here, the window-related information includes a transmission time period length for each transmission time period of each of two or more windows set in the terminal 1.

More specifically, the extraction unit 110 may include window-related information including a transmission time interval length for a transmission time interval (TTI) of each of two or more windows checked for a specific monitoring period (T). Can be extracted. For example, referring to FIG. 5, the extractor 110 includes a transmission time interval length (eg, a or b or c) of each of the seven TTI windows corresponding to the terminal 1 identified during the monitoring period T. The window-related information of the terminal 1 can be extracted.

The determination unit 120 determines whether the window-related information extracted by the extraction unit 110 corresponds to a preset priority allocation criterion.

More specifically, the determination unit 120, the number of windows having a transmission time interval length corresponding to the preset reference length of the two or more windows checked during the monitoring period (T) compared to the total number of the two or more windows. If the ratio is equal to or greater than a specific reference ratio, it may be determined that the window-related information extracted by the extractor 110 corresponds to the priority allocation criteria.

Here, the preset reference length may include a section length (eg, 128 ms, 256 ms, 2048 ms ...) of the TTI set for data transmission, and more specifically, the section of the minimum TTI set for data transmission. It is preferable to mean more than the length (eg 128ms).

Here, the specific reference ratio is a minimum ratio that can be recognized that the ratio of the number of windows having a transmission time interval length corresponding to the reference length to the total number of windows checked during the monitoring period T is the overload terminal, that is, the amount of transmission data is large. Eg 50%).

Thus, referring to FIG. 5 in detail, the determination unit 120, based on the window-related information of the terminal 1 extracted by the extraction unit 110, of the seven TTI windows identified during the monitoring period (T) The number 4 of TTI windows having a transmission time interval length (eg c) corresponding to the set reference length (eg 128 ms or more) can be checked. As such, a TTI window having a transmission time interval length (eg, c) corresponding to a preset reference length (eg, 128 ms or more) may be referred to as a Loading TTI window used for data transmission.

Therefore, the determination unit 120, since about 57% of the ratio of the TTI window having a transmission time interval length (eg c) corresponding to the reference length (eg 128 ms or more) is equal to or greater than a specific reference rate (eg 50%). The window-related information of the terminal 1 may be determined to correspond to the priority allocation criteria. As such, the terminal 1 having the window-related information corresponding to the priority allocation criteria may be a highly loaded terminal that is expected to have a large amount of transmission data to be transmitted from the base station through the downlink, that is, the terminal to be assigned first.

Meanwhile, referring to FIG. 5, in case of the terminal 2, the determination unit 120 determines a preset reference length (for example, 128 ms) among 18 TTI windows identified during the monitoring period T from the window related information of the terminal 2. Since there is no TTI window having a transmission time interval length (eg, c) corresponding to the above), it will be determined that the window related information of the terminal 2 does not correspond to the priority allocation criteria.

In addition, referring to FIG. 5, when the terminal 3 is described, the determination unit 120 determines a preset reference length (eg, 128 ms) among 14 TTI windows identified during the monitoring period T from the window-related information of the terminal 3. Since about 7% of the number 1 of the TTI windows having the transmission time interval length (eg, c) corresponding to the above) is not more than a specific reference rate (eg, 50%), the window-related information of the terminal 3 is assigned first. It will be judged that it does not meet the criteria.

The identification unit 130 checks the resource size of the radio resource allocated to the window having the transmission time interval length corresponding to the preset reference length.

That is, the verification unit 130, the radio resources allocated to each TTI window for each of the four TTI windows having a transmission time interval length corresponding to a preset reference length (for example, 128ms or more) identified from the window-related information Check the resource size. For example, the verification unit 130 may check the resource size of the radio resource by checking the number of resource blocks (RBs) allocated or included in each TTI window. Here, 1 RB may mean a resource region over 12 subcarriers in the frequency domain and two slots (one slot is 0.5ms) in the time domain.

If the determination unit 120 determines that the window-related information of the terminal 1 corresponds to a predetermined priority allocation criterion as described above, the allocation unit 140 may preferentially allocate the radio resource to the terminal 1.

In more detail, the allocator 140 confirms the minimum resource size among the resource sizes of the radio resources checked by the identification unit 130, and preferentially assigns the radio resources having the minimum resource size of at least the minimum resource size to the terminal 1. It is desirable to assign.

That is, the allocator 140 checks the minimum resource size among the resource sizes of the radio resources identified for each of the four TTI windows having the transmission time interval length corresponding to the preset reference length (eg, 128 ms or more). For example, the allocator 140 may check the number 30 of the resource areas RB as the minimum resource size.

Accordingly, when allocating the radio resources to the terminal 1 preferentially, the allocation unit 140 may preferentially allocate the radio resources to the terminal 1 having at least 30 checked resource areas (RBs).

Therefore, according to the base station apparatus 100 according to the present invention, in setting the TTI for the UE in relation to the downlink, the TTI set when transmitting data is longer than the TTI set when transmitting a signal. Therefore, based on the transmission time interval (TTI) of each terminal, the terminal that is expected to have a large amount of transmission data, i.e., the terminal to be assigned first, is assigned to the terminal, and downlink radio resources are preferentially assigned to the terminal, Improve performance and resource allocation efficiency.

Meanwhile, when allocating the radio resource to the terminal 1 preferentially as described above, the allocator 140 may further apply a condition for excluding from the priority allocation.

That is, the allocation unit 140, the data size to be transmitted to the terminal 1 is more than the predetermined size or the retransmission data to be transmitted to another terminal 2 or terminal 3 other than the terminal 1 is not confirmed or the terminal to the terminal 1 Only when the control related signal associated with the base station apparatus 100 or the base station apparatus 100 is not transmitted, it is preferable to allocate the radio resource to the terminal 1 first.

In other words, the allocation unit 140 transmits the radio resource to the terminal 1 even when the determination unit 120 determines to allocate the radio resource to the terminal 1 preferentially because the window-related information of the terminal 1 corresponds to the priority allocation criteria. If there is no data received from the upper level or if the amount of data received from the upper level to transmit to the terminal 1 is small and it is determined that the data size to be transmitted to the terminal 1 is not more than a predetermined size, the radio resource is allocated to the terminal 1 first. You can decide not to.

Further, even when the determining unit 120 determines that the radio resource is preferentially allocated to the terminal 1 because the window-related information of the terminal 1 corresponds to the priority allocation criteria, the base station apparatus 100 When retransmission data to be retransmitted to another terminal 2 or terminal 3 other than the terminal 1 due to a loss or a delay of transmission is confirmed, it may be determined that the radio resource is not allocated to the terminal 1 preferentially.

Further, even when the determining unit 120 determines to preferentially allocate the radio resource to the terminal 1 because the window-related information of the terminal 1 corresponds to the priority allocation criteria, the terminal 1 or the base station apparatus If it is time to transmit a control-related signal, such as a signaling signal or broadcasting data associated with (100), it may be determined that the radio resource is not allocated to the terminal 1 preferentially.

That is, even when the determination unit 120 determines that the radio resource is preferentially allocated to the terminal 1 because the window-related information of the terminal 1 corresponds to the priority allocation criteria, the allocation unit 140 may assign the terminal 1 to the terminal 1 as described above. By further applying the priority allocation exclusion condition for excluding from the priority allocation, the radio resource may be preferentially allocated to the terminal 1 only when this condition does not apply.

Hereinafter, an operation method of the base station apparatus according to the present invention will be described with reference to FIG. 3 to FIG. Hereinafter, for convenience of description, the reference numerals of FIGS. 1 to 2 and 5 will be described.

First, with reference to FIG. 3, a control flow of a communication system including a base station apparatus according to the present invention will be described.

The base station apparatus 100 will transmit data or a signal to each of the terminals 1, 2, and 3 based on a TTI window according to a preset transmission time interval (TTI) for each of the terminals 1, 2, and 3 (S10 to S30). .

Accordingly, the base station apparatus 100 extracts window related information related to each of the terminals 1, 2, and 3 (S40). Here, the window-related information may include a transmission time interval length for each transmission time interval of two or more windows set in the corresponding terminal.

For example, the base station apparatus 100 may, for each of the terminals 1, 2, and 3, relate to a window including a transmission time interval length for a transmission time interval (TTI) of each of two or more windows identified during a specific monitoring period (T). Information can be extracted.

Thus, when the base station apparatus 100 extracts the window related information for each of the terminals 1, 2, and 3, the base station apparatus 100 determines whether the extracted window related information of each of the terminal 1, 2, and 3 corresponds to the preset priority allocation criteria. Determine (S50).

Accordingly, the base station apparatus 100 preferentially allocates radio resources to a terminal (for example, terminal 1) in which window-related information corresponds to a preset priority allocation standard (S60), and the window-related information corresponds to a priority allocation criterion. Radio resources may be allocated to terminals that are not (eg, terminals 2 and 3) (S70 and S80).

Hereinafter, an operation method of a base station apparatus according to a preferred embodiment of the present invention will be described in more detail with reference to FIG. 4.

In the operation method of the base station apparatus according to the present invention, the window-related information related to a specific terminal, for example, terminal 1 is extracted (S100). That is, the operation method of the base station apparatus according to the present invention, extracts the window-related information including the transmission time interval length for the transmission time interval (TTI) of each of two or more windows that are identified during a specific monitoring period (T) for the terminal 1 can do. Herein, the specific terminal refers to each of the plurality of terminals 10 using the communication service through the base station apparatus 100, and hereinafter, the terminal 1 will be described for convenience of description.

In operation S110 and S120, the method for operating a base station apparatus according to the present invention determines whether the extracted window-related information corresponds to a preset priority allocation standard.

In more detail with reference to Figure 5, the operation method of the base station apparatus according to the present invention, from the extracted window-related information of the terminal 1, the preset reference length (7) of the seven TTI windows identified during the monitoring period (T) For example, the number 4 of TTI windows having a transmission time interval length (eg, c) corresponding to 128 ms or more may be checked (S110).

In addition, in the method of operating a base station apparatus according to the present invention, a ratio of a TTI window having a transmission time interval length (eg, c) corresponding to a reference length (eg, 128 ms or more) is about 57% of a specific reference rate (eg, 50). %) Or more (S120).

In this case, since about 57% of the TTI window having the transmission time interval length (eg c) corresponding to the reference length (eg 128 ms or more) is greater than or equal to a specific reference rate (eg 50%), the base station apparatus according to the present invention. The operation method of may determine that the window related information of the terminal 1 corresponds to the priority allocation criteria. In this way, the terminal 1 having the window-related information corresponding to the priority allocation criteria may be referred to as a terminal to be assigned first.

In operation of the base station apparatus according to the present invention, prior to allocating the radio resource to the terminal 1, it is determined whether the condition for excluding from the priority allocation, i.e., the preset non-preferred condition (S130).

That is, in the operation method of the base station apparatus according to the present invention, the data size to be transmitted to the terminal 1 is greater than or equal to a predetermined specific size, or the retransmission data to be transmitted to another terminal 2 or the terminal 3 other than the terminal 1 is not confirmed or Only when the control related signal associated with the terminal 1 or the base station apparatus 100 is transmitted to the terminal 1, it is preferable to allocate the radio resource to the terminal 1 first.

In other words, in the method of operating the base station apparatus according to the present invention, even if it is determined in step S120 that the radio resources are preferentially allocated to the terminal 1, there is no data received from the upper level to be transmitted to the terminal 1 or the terminal 1 is transmitted. If it is determined that the amount of data received from the upper level is small and the data size to be transmitted to the terminal 1 is not more than a predetermined size, it may be determined that the radio resource is not allocated to the terminal 1 first.

In addition, in the method of operating the base station apparatus according to the present invention, even when it is determined in step S120 that the radio resources are preferentially allocated to the terminal 1, the base station apparatus 100 is lost to the terminal 2 or the terminal 3 other than the terminal 1. Alternatively, when retransmission data to be retransmitted due to transmission delay or the like is confirmed, it may be determined that the radio resource is not allocated to the terminal 1 first.

In addition, in the method of operating the base station apparatus according to the present invention, even when it is determined in step S120 that the radio resources are preferentially allocated to the terminal 1, a control related signal related to the terminal 1 or the base station apparatus 100 such as a signaling signal or a broadcasting is performed. If it is time to transmit data, it may be determined that the radio resource is not allocated to terminal 1 preferentially.

That is, in the operation method of the base station apparatus according to the present invention, even if it is determined in step S120 that the radio resources are preferentially allocated to the terminal 1, the condition for excluding the preferential allocation for excluding the priority allocation to the terminal 1 as described above is further added. By applying the radio resource to the terminal 1 may be preferentially allocated only when this condition is not satisfied.

Accordingly, in the method of operating the base station apparatus according to the present invention, if the determination result of step S130 does not correspond to the condition for excluding priority allocation, the radio resource allocated to the window having the transmission time interval length corresponding to the preset reference length identified above is determined. Check the resource size (S140).

That is, in the method of operating the base station apparatus according to the present invention, as described above, each of the four TTI windows having a transmission time interval length corresponding to a preset reference length (eg, 128 ms or more) is allocated to each TTI window. The resource size of the established radio resource. For example, in the method for operating a base station apparatus according to the present invention, the resource size of a radio resource can be confirmed by checking the number of resource blocks (RBs) allocated or included in each TTI window.

In the operation method of the base station apparatus according to the present invention, it is preferable to check the minimum resource size among the resource sizes of the radio resources to be identified and to allocate the radio resources of the at least one of the minimum resource size or more to the terminal 1 first (S150). ).

That is, in the method of operating the base station apparatus according to the present invention, the minimum resource size among the resource sizes of the radio resources identified for each of the four TTI windows having a transmission time interval length corresponding to a preset reference length (eg, 128 ms or more) Check. For example, in the operation method of the base station apparatus according to the present invention, the number of resource areas RB 30 can be identified as the minimum resource size.

Accordingly, in the method of operating the base station apparatus according to the present invention, when the radio resources are preferentially allocated to the terminal 1, the radio resources to which the identified minimum resource size, for example, 30 or more resource areas (RBs) of 30 or more can be preferentially allocated to the terminal 1. .

Since the operation method of the base station apparatus according to the present invention, even after determining the terminal to be assigned first to the terminal 1, the ratio of the window having a transmission time interval length corresponding to a predetermined reference length (eg, 128 ms or more) continuously By confirming, it is possible to determine whether to continuously allocate radio resources to terminal 1 first or stop allocating radio resources to terminal 1 first according to the confirmed ratio.

Meanwhile, referring to FIG. 5, the case of the terminal 2 and the terminal 3 will be described. In the operation method of the base station apparatus according to the present invention, the window-related information of the terminal 2 and the terminal 3 does not correspond to the priority allocation criteria in step S120. Will judge.

In this case, the operation method of the base station apparatus according to the present invention, it is determined that the terminal 2 and the terminal 3 is not the terminal to be assigned first, and will allocate the radio resource according to the general existing method. For example, in the method of operating the base station apparatus according to the present invention, among the radio resources that can be allocated to the terminal 2 and the terminal 3, the remaining radio resources can be allocated according to the existing scheme.

Therefore, according to the operating method of the base station apparatus according to the present invention, in setting the TTI for the UE in relation to the downlink, the TTI that is set when transmitting data is set longer than the TTI that is set when transmitting signals Therefore, based on the transmission time interval (TTI) of each terminal, the terminal that is expected to have a large amount of transmission data, i.e., the terminal to be assigned first, is assigned to the terminal, and downlink radio resources are preferentially assigned to the terminal, Improve performance and resource allocation efficiency.

The method of operating the base station according to an embodiment of the present invention may be implemented in the form of a program command that can be executed through various computer means and recorded in a computer readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions recorded on the medium may be those specially designed and constructed for the present invention or may be available to those skilled in the art of computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Magneto-optical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

According to an operation method of a base station apparatus and a base station apparatus according to the present invention, a terminal that is expected to have a large amount of transmission data, that is, a terminal to be assigned first is determined based on the transmission time interval (TTI) of each terminal, By allocating downlink radio resources, the performance and resource allocation efficiency of downlink scheduling can be improved. As a result, the possibility of commercialization or sales of the applied device as well as the use of related technologies is exceeded due to the limitation of the existing technology. This is not only sufficient but also practically evident, and thus it is an invention with industrial applicability.

100: base station device
110: extraction unit 120: determination unit
130: confirmation unit 140: allocation unit

Claims (11)

An extraction unit for extracting window related information related to a specific terminal;
A determination unit that determines whether the extracted window related information corresponds to a preset priority allocation standard; And
And a window allocation unit for allocating the radio resources to the terminal if the window related information corresponds to a preset priority criteria. The method of claim 1,
The window related information,
And a transmission time section length for each transmission time section of each of two or more windows set in the terminal. 3. The method of claim 2,
Wherein,
If the number of windows having a transmission time interval length corresponding to a preset reference length among the two or more windows is equal to or greater than a specific reference ratio relative to the total number of the two or more windows, the window-related information corresponds to the priority allocation criteria. Base station apparatus characterized in that it determines. The method of claim 3, wherein
The base station apparatus further comprises a confirmation unit for confirming a resource size of a radio resource allocated to a window having a transmission time interval length corresponding to the preset reference length. 5. The method of claim 4,
Wherein the allocating unit comprises:
The base station apparatus characterized in that the minimum resource size of the resource size of each of the radio resources identified by the identification unit is identified, and the radio resources at least the minimum resource size or more are preferentially allocated to the terminal. The method of claim 1,
Wherein the allocating unit comprises:
When the data size to be transmitted to the terminal is greater than or equal to a predetermined size or retransmission data to be transmitted to a terminal other than the terminal is not confirmed, or transmits a control related signal related to the terminal or the base station apparatus to the terminal. The base station apparatus characterized in that the radio resource is allocated to the terminal preferentially only when it is not at the time point. An extraction step of extracting window related information related to a specific terminal;
A determination step of determining whether the extracted window related information corresponds to a preset priority allocation criterion; And
And assigning a radio resource to the terminal in advance if the window-related information corresponds to a preset priority criteria. The method of claim 7, wherein
The window related information,
And a transmission time interval length for each transmission time interval of each of two or more windows set in the terminal. The method of claim 8,
Wherein,
If the number of windows having a transmission time interval length corresponding to a preset reference length among the two or more windows is equal to or greater than a specific reference ratio relative to the total number of the two or more windows, the window related information corresponds to a preset priority allocation criterion. Operation method of a base station apparatus characterized in that it is determined to be. The method of claim 9,
And confirming a resource size of a radio resource allocated to a window having a transmission time interval length corresponding to the preset reference length. 11. The method of claim 10,
The allocation step,
A method of operating a base station apparatus, characterized in that it checks the minimum resource size among the resource sizes of each of the identified radio resources and preferentially allocates at least the minimum resource size of radio resources to the terminal.

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