KR20240057068A - Bwp dynamic control device and control method thereof - Google Patents

Abstract

The present invention proposes a new BWP dynamic control technique that can dynamically set a more efficient and optimal BWP for the terminal (UE) through UAI utilization of the terminal (UE) and indirect reflection of traffic of the terminal (UE), there is.

Description

BWP dynamic control device and operation method of BWP dynamic control device {BWP DYNAMIC CONTROL DEVICE AND CONTROL METHOD THEREOF}

The present invention relates to BWP (Bandwidth Part) technology that sets a narrower bandwidth than the Carrier BW (Bandwidth) in the terminal.

5G (NR) has the feature of providing wider bandwidth compared to RAT (Radio Access Technology) in the previous 4G (LTE).

Accordingly, in 5G, the terminal gains the advantage of guaranteed improved throughput performance through a wider bandwidth, but even if resources in a narrow band are allocated (scheduled), the bandwidth equal to the entire carrier BW (full BW) must be monitored, and at this time, the terminal's Unnecessary power consumption may occur in RF circuits.

Additionally, unnecessary power consumption of the terminal may cause problems such as reduced battery life, shortened battery life, and heat generation.

Accordingly, the standard specifies a technology called BWP (Bandwidth Part) to improve unnecessary power consumption due to bandwidth monitoring of the terminal's full BW.

BWP is a technology that allows the terminal to monitor only the set BWP by setting a narrower bandwidth than the Carrier BW for each of the uplink and downlink of the terminal.

Accordingly, the existing BWP technology is a method in which the base station determines a BWP of an appropriate size according to the traffic situation of the terminal and delivers and sets it to the terminal through DCI (Downlink Control Information) or RRC reconfiguration message. This is called BWA (BWP). It is also called Adaptation or BW Switching.

Meanwhile, the standard defines UE Assistance Information (UAI) so that the terminal (UE) can transmit its preferences to the network for purposes such as power saving and overheating mitigation.

Unlike UE Capability Information, which can be transmitted only at the time of initial connection or when there is a request from the network, this UAI can freely transmit its own preferences to the network at any time after initial connection is completed.

Due to the fact that the terminal (UE) can freely transmit its preferences to the base station through UAI, if the base station indirectly determines the battery status and heat status of the terminal (UE) from UAI and uses this when setting BWP, A more efficient BWP can be set for the terminal.

Accordingly, in the present invention, we would like to propose a concrete technical method that can dynamically set a more efficient and optimal BWP for the terminal (UE) by utilizing the UAI of the terminal (UE).

The present invention was created in consideration of the above circumstances, and the problem to be solved by the present invention is to utilize the UAI of the terminal (UE) to dynamically set a more efficient and optimal BWP for the terminal (UE). Implementing technological solutions.

The BWP dynamic control device according to the first aspect of the present invention for achieving the above object includes an information confirmation unit that checks status-related information of a terminal transmitted through an uplink message; A BWP setting unit that sets a BWP (Bandwidth Part) of a specific size for the terminal based on the confirmed status-related information; and a BWP adjustment unit that adjusts the preset BWP of the terminal using specific information related to the application used by the terminal.

Specifically, the status-related information may include information confirmed in at least one related field among battery and heat generation within UAI (User Assistance Information) transmitted from the terminal to the base station.

Specifically, the specific information may be information about QoS Flow that is mapped differently depending on the traffic characteristics of the application.

Specifically, as a result of checking from the status-related information, the BWP setting unit may set a BWP of a smaller size if the remaining battery amount is large as the remaining battery amount is small, and may set a BWP of a smaller size if the amount of remaining battery is large, and may set a BWP of a smaller size if the amount of heat generated is greater. there is.

Specifically, multiple QoS Flows are divided into a QoS Flow group that maintains the preset BWP, a QoS Flow group that switches the BWP to a large-sized BWP, and a QoS Flow group that switches the BWP to a small-sized BWP. In addition, the BWP adjuster may maintain the preset BWP of the terminal, switch to a larger BWP, or switch to a smaller BWP, depending on the group to which the QoS Flow mapped to the traffic of the application used by the terminal belongs. there is.

Specifically, the BWP adjustment unit may perform BWP adjustment based on the specific information at a cycle shorter than the BWP setting cycle based on the state-related information.

A method of operating a BWP dynamic control device according to a second aspect of the present invention for achieving the above object includes an information confirmation step of checking status-related information of a terminal transmitted through an uplink message; A BWP setting step of setting a BWP (Bandwidth Part) of a specific size for the terminal based on the confirmed status-related information; and a BWP adjustment step of adjusting the preset BWP of the terminal using specific information related to the application used by the terminal.

Accordingly, according to the BWP dynamic control device and the operation method of the BWP dynamic control device of the present invention, a more efficient and optimal BWP is provided to the terminal (UE) through UAI utilization of the terminal (UE) and indirect reflection of traffic of the terminal (UE). A new BWP dynamic control technique that can dynamically set is implemented.

For this reason, according to the present invention, it is possible to dynamically set a BWP that can adaptively satisfy the terminal's traffic demands with priority from an instantaneous time perspective, while also satisfying the terminal's power consumption reduction from an average long-term perspective. do.

That is, according to the present invention, when setting the BWP of the terminal (UE), UAI is optimally utilized, and the traffic demands of the terminal are adaptively prioritized, while a BWP that can also satisfy the power consumption reduction of the terminal from an average long-term perspective is provided. Through the implementation of dynamic control techniques, the effect of reducing unnecessary power consumption of the terminal compared to the existing method is derived, and furthermore, the effect of being able to dynamically set an efficient/optimal BWP without changing the BWP too frequently.

Figure 1 is an exemplary diagram showing the configuration of a BWP dynamic control device according to an embodiment of the present invention.
Figure 2 is an example diagram showing the battery/heat related Information Element (IE) structure in UAI.
Figure 3 is an example diagram showing an example of QoS Flow being set/mapped differently depending on the application.
Figure 4 is a control flowchart showing a method of operating a BWP dynamic control device (BWP dynamic control technique) according to an embodiment of the present invention.

Hereinafter, various embodiments of the present invention will be described with reference to the attached drawings.

The present invention relates to BWP (Bandwidth Part) technology that sets a narrower bandwidth than the Carrier BW (Bandwidth) in the terminal.

5G (NR) has the feature of providing wider bandwidth compared to RAT (Radio Access Technology) in the previous 4G (LTE).

Accordingly, in 5G, the terminal gains the advantage of guaranteed improved throughput performance through a wider bandwidth, but even if resources in a narrow band are allocated (scheduled), the bandwidth equal to the entire carrier BW (full BW) must be monitored, and at this time, the terminal's Unnecessary power consumption may occur in RF circuits.

Additionally, unnecessary power consumption of the terminal may cause problems such as reduced battery life, shortened battery life, and heat generation.

Accordingly, the standard specifies a technology called BWP (Bandwidth Part) to improve unnecessary power consumption due to bandwidth monitoring of the terminal's full BW.

BWP is a technology that allows the terminal to monitor only the set BWP by setting a narrower bandwidth than the Carrier BW for each of the uplink and downlink of the terminal.

Accordingly, the existing BWP technology is a method in which the base station determines a BWP of an appropriate size according to the traffic situation of the terminal and delivers and sets it to the terminal through DCI (Downlink Control Information) or RRC reconfiguration message. This is called BWA (BWP). It is called Adaptation or BW Switching.

Meanwhile, the standard defines UE Assistance Information (UAI) so that the terminal (UE) can transmit its preferences to the network for purposes such as power saving and overheating mitigation.

Unlike UE Capability Information, which can be transmitted only at the time of initial connection or when there is a request from the network, this UAI can freely transmit its own preferences to the network at any time after initial connection is completed.

Due to the fact that the terminal (UE) can freely transmit its preferences to the base station through UAI, if the base station indirectly determines the battery status and heat status of the terminal (UE) from UAI and uses this when setting BWP, A more efficient BWP can be set for the terminal.

In relation to this, the current standard discusses UAI in relation to BWP for the purpose of power saving of the terminal, but does not provide specific technical details. Also, if the BWP setting of the terminal is performed using only UAI, the purpose of power saving is Although this may be achievable, it may cause other problems such as degrading other performance (e.g. in terms of eMBB).

Accordingly, in the present invention, we would like to propose a concrete technical method that can dynamically set a more efficient and optimal BWP for the terminal (UE) by utilizing the UAI of the terminal (UE).

More specifically, the present invention seeks to realize a concrete technical method that can optimally utilize the UAI of the terminal (UE) when setting the BWP of the terminal (UE), that is, a new BWP dynamic control technique.

In the present invention, the previously proposed BWP dynamic control technique is intended to be realized through the BWP dynamic control device described below.

Figure 1 shows the configuration of a BWP dynamic control device according to an embodiment of the present invention.

As shown in FIG. 1, the BWP dynamic control device 100 according to an embodiment of the present invention may include an information confirmation unit 110, a BWP setting unit 120, and a BWP adjustment unit 130.

The communication system to which the present invention is applied may be a 4G (LTE) system or a 5G (NR) system.

In addition, the BWP dynamic control device 100 according to an embodiment of the present invention can be implemented in a subject that sets the BWP to the terminal 10 in a communication system to which the present invention is applied, and as an example, a base station (e.g., LTE It can be implemented in eNB for , gNB for 5G. In the following description, for convenience of explanation, the BWP dynamic control device 100 of the present invention will be described based on an embodiment implemented in a 5G gNB.

The entire or at least part of the BWP dynamic control device 100 of the present invention may be implemented in the form of a hardware module or a software module, or may be implemented in a combination of a hardware module and a software module.

Here, the software module can be understood as, for example, an instruction executed by a processor that controls operations within the BWP dynamic control device 100, and these instructions are stored in the memory of the BWP dynamic control device 100. You can have it.

In the end, the BWP dynamic control device 100 according to an embodiment of the present invention, through the above-described configuration, can optimally utilize the UAI of the terminal (UE) in the method proposed by the present invention, that is, when setting the BWP of the terminal (UE). Realizes BWP dynamic control technique.

Below, each configuration within the BWP dynamic control device 100 to realize this will be described in more detail.

The information confirmation unit 110 is responsible for checking status-related information of the terminal 10 transmitted through an uplink message.

Here, the status-related information of the terminal 10 may include information confirmed in at least one related field of battery and heat within UAI (User Assistance Information) transmitted by the terminal 10 to the base station (e.g., gNB). there is.

More specifically, as explained above, in the present invention, the basic purpose is to reduce unnecessary power consumption of the terminal 10, so the basic purpose is to utilize UAI to transmit the terminal 10's own preferences to the base station (e.g. gNB). Do this.

Figure 2 is an example diagram showing the battery/heat related Information Element (IE) structure in UAI.

UAI may be delivered to the base station (eg, gNB) through an uplink message (eg, RRC complete message) transmitted from the terminal 10 to the base station (eg, gNB).

Although the UAI delivery period is not defined in the standard, considering that the RRC complete message is delivered when attaching to the network in idle mode, the UAI delivery period can generally be viewed as a second or minute scale period.

Accordingly, to describe an embodiment, the UAI of the terminal 10 may be transmitted/delivered to the base station (e.g., gNB) through an RRC complete message at a UAI delivery period of second or minute scale.

In this case, the information confirmation unit 110, whenever the UAI of the terminal 10 is transmitted to the base station (e.g., gNB), the battery (Power Saving) related field value (e.g., reducedMaxBW) in the UAI as shown in FIG. 2 -FR1/2) and over heating related field values (e.g. reducedMaxBW-FR1/2), the BW value “reducedBW-DL/UL-r16” proposed by the UE can be checked, and through this, the terminal (10 ), you can indirectly check/find out the battery status/heating status as status-related information.

The BWP setting unit 120 is responsible for setting a BWP of a specific size for the terminal 10 based on status-related information confirmed by the information confirmation unit 110, that is, battery status/heating status.

That is, in the BWP dynamic control device 100 of the present invention, the BWP setting unit 120 is responsible for the BWP setting function for the terminal 10.

To describe a specific embodiment, the BWP setting unit 120, as described above, whenever the UAI of the terminal 10 is transmitted to the base station (e.g., gNB) (e.g., in a period of second or minute scale), the BWP setting unit 120 confirms the information from the UAI. Based on status-related information, that is, battery status/heating status, a BWP of a specific size for the terminal 10 can be set.

In the following description, the BWP of a specific size set based on the battery status/heating status of the terminal 10 confirmed from UAI will be referred to as 'Reference BWP'.

Meanwhile, in the case of the present invention, the method of setting the Reference BWP in the BWP setting unit 120 based on the battery state/heating state confirmed from the UAI is not specifically limited.

However, the BWP setting unit 120 checks the battery status/heating status from the status-related information, and if the remaining battery amount of the terminal 10 is small and the remaining battery amount is large, a BWP of a smaller size can be set as the reference BWP. , if the heat generation of the terminal 10 is greater, a BWP of a smaller size can be set as the reference BWP.

To explain an example from this perspective, the BWP setting unit 120 determines the battery status of the terminal 10 among four different BWPs (BWP #1, #2, #3, #4) defined in the standard. /You can select one according to the results of checking the fever status and set it as the reference BWP.

The Reference BWP set periodically (e.g., UAI delivery period on a second or minute scale) by the BWP setting unit 120 can be delivered and set to the terminal 10 through a DCI or RRC reconfiguration message.

On the other hand, if you limit yourself to setting the BWP of the terminal 10 using only UAI (battery status/heating status), you can achieve the purpose of reducing power consumption, but other performance (e.g., eMBB aspect) is deteriorated. Another problem may arise.

The reason is that when only the UAI (battery status/heat status) of the terminal is used without distinguishing between when a large bandwidth can be used and when only a small bandwidth can be used, the freedom of flexible BW utilization is reduced and the resulting performance (e.g. : eMBB side) This is because degradation problems may occur.

Another reason is that when using only the terminal's UAI (battery status/thermal status), the period at which BWP changes due to UAI (e.g., UAI transmission period on the second or minute scale) is the BWP switching aimed at by BWP technology. Because it is considerably longer than the cycle of, meaningful BWP cannot be used, and this may cause performance (e.g., eMBB aspect) degradation problems.

For reference, the BWP switching period targeted by BWP technology is switched based on DCI, which is a second or milisecond scale control signal in most situations, so it can be said to be a second or milisecond scale period.

Accordingly, in the present invention, the function of setting the reference BWP using the terminal's UAI (battery status/heating status) is basic, but distinguishes between when a large bandwidth is used and when only a small bandwidth can be used, and UAI-based BWP An additional feature is the ability to dynamically adjust the BWP at a period that is shorter than the change (or set) period (e.g., UAI delivery period on the second or minute scale).

The BWP adjustment unit 130 corresponds to a configuration for additional features of tactics.

Specifically, the BWP adjustment unit 130 is responsible for adjusting the preset BWP of the terminal 10 using specific information related to the application used by the terminal 10.

Here, the specific information may be a QoS Flow that is mapped differently depending on the traffic characteristics of the application used by the terminal 10.

To be described in detail with reference to FIG. 3, QoS Flow is mapped/set by a core node (e.g., UPF in 5G) involved in the transmission of data traffic, and QoS within the core node (e.g., UPF in 5G) Depending on the flow policy, traffic from different applications can be mapped to the same QoS Flow or a different QoS Flow.

However, the QoS Flow policy can typically map applications with similar traffic characteristics (e.g. demand/pattern) to the same QoS Flow. Therefore, through QoS Flow, applications with similar traffic characteristics (e.g. demand/pattern) can be indirectly distinguished/confirmed.

Accordingly, the BWP adjuster 130 implemented in the gNB (100, BWP dynamic control device 100) transmits data between the terminal 10 and the core node (e.g., UPF in the case of 5G) for the terminal 10. It is possible to check the QoS Flow mapped/set to the traffic and use the confirmed QoS Flow as specific information to adjust the preset BWP of the terminal 10.

To explain one embodiment, in the present invention, a QoS Flow group that maintains a preset BWP, a QoS Flow group that switches a BWP to a large size, and a QoS Flow group that switches the BWP to a small size (Size) ) can be divided into three QoS Flow groups: a QoS Flow group that is switched by a BWP.

Hereinafter, for convenience of explanation, the QoS Flow group that maintains the preset BWP is switched to the Stay group, and the QoS Flow group that is adjusted (switched) to a BWP of a large size (Size) is adjusted to a Step Up group (Switched to a BWP of a small size (Size)). The QoS Flow group that switches will be referred to as the Step Down group.

At this time, in the present invention, QoS Flow, which is mainly mapped to applications with moderate/occasional traffic characteristics (e.g., demand/pattern), is divided into Stay groups, and the QoS Flow that is mainly mapped to applications with traffic characteristics (e.g., demand/pattern) is large/frequent. QoS Flows that are mainly mapped to one application can be divided into the Step Up group, and QoS Flows that are mainly mapped to applications with small/infrequent traffic characteristics (e.g. demand/pattern) can be divided into the Step Down group.

Accordingly, continuing the description of the above-described embodiment, when the BWP adjuster 130 confirms the QoS Flow mapped to the traffic of the application used by the terminal 10 as described above, the terminal ( The preset BWP in 10) can be maintained or switched to a larger size BWP or a smaller size BWP.

For example, assuming that the preset BWP of the terminal 10 is a reference BWP (e.g., BWP #2) set based on the aforementioned UAI (battery status/thermal status), the BWP adjuster 130 is configured to configure the terminal ( If the QoS Flow mapped to the traffic of the application used by 10) belongs to the Stay group, the BWP (e.g., BWP #2) preset for the terminal 10 can be maintained without change.

Meanwhile, the BWP adjuster 130 switches the BWP to a BWP of a larger size when the QoS Flow mapped to the traffic of the application used by the terminal 10 belongs to the Step Up group (e.g., BWP #2 - > #1), and if you belong to the Step Down group, you can switch the BWP to a BWP of a smaller size (e.g. BWP #2 -> #3).

Additionally, the BWP adjustment unit 130 may perform BWP adjustment/switch based on specific information (QoS Flow) at a cycle shorter than the BWP setting cycle based on UAI (battery status/heating status).

That is, the BWP adjustment unit 130 operates on a cycle (hereinafter referred to as the BWP adjustment cycle) that is shorter than the UAI-based BWP setting (or change) cycle (e.g., UAI delivery cycle on the second or minute scale) for the terminal 10, BWP adjustment/switch is performed based on the QoS Flow of the terminal 10.

And, the BWP adjusted/switched to the BWP adjustment cycle by the BWP adjustment unit 130 can be delivered and set to the terminal 10 through a DCI or RRC reconfiguration message.

As described above, according to the BWP dynamic control device 100 of the present invention, the reference BWP is set by utilizing the terminal's UAI (battery status/heating status), but the QoS Flow indirectly reflects the terminal's traffic. By dynamically adjusting the BWP in a shorter cycle (e.g., maintaining the set BWP or switching to a BWP of a large size or a BWP of a small size), a more efficient and optimal BWP is provided for the terminal. A new BWP dynamic control technique that dynamically sets is implemented.

As such, the BWP dynamic control technique proposed/implemented in the present invention can be said to be a technique that saves the terminal's power when the QoS Flow is a Step Down group and uses the saved power when the QoS Flow is a Step Up group.

Therefore, if we assume that the application usage of the Step Down / Stay / Step Up groups in the terminal is similar on average, the terminal maintains power consumption at the Reference BWP based on UAI (battery status/heat status) over a long period of time ( or convergence), and from an instantaneous time perspective, the BWP adaptation required for traffic can also be satisfied through QoS Flow-based BWP adjustment/switch.

As a result, the present invention analyzes the application usage in the terminal and, considering that the application usage of the Step Down / Stay / Step Up groups is similar on average, adaptively prioritizes the terminal's traffic demands from an instantaneous time perspective. It is possible to dynamically set a BWP that can be satisfied and can also satisfy the power consumption reduction of the terminal from an average long-term perspective.

Accordingly, according to the present invention, by realizing a BWP dynamic control technique that can optimally utilize UAI when setting the BWP of the terminal, there is an effect of reducing unnecessary power consumption of the terminal compared to the existing one, and furthermore, efficient/optimal operation is achieved without too frequent BWP changes. The effect of setting BWP dynamically is derived.

Furthermore, in the present invention, by using a QoS Flow that indirectly reflects the application (traffic) rather than directly reflecting the actual traffic situation of the terminal, relatively frequent BWPs are possible because the QoS Flow is more static in time than the actual traffic situation. Changes can be avoided (frequent BWP changes lead to RF power consumption of the terminal).

Hereinafter, a method of operating the BWP dynamic control device according to an embodiment of the present invention will be described with reference to FIG. 4.

The operating method of the BWP dynamic control device according to the present invention is the same as the BWP dynamic control technique implemented in the BWP dynamic control device 100 of the present invention. In the following detailed description, for convenience of explanation, it will be described from the perspective of the BWP dynamic control device 100 implemented on the base station (eg, gNB) side with reference to FIG. 1.

In the BWP dynamic control technique according to an embodiment of the present invention, the BWP dynamic control device 100 can receive/check status-related information of the terminal 10 transmitted through an uplink message (S10).

Specifically, the BWP dynamic control device 100, whenever the UAI of the terminal 10 is delivered to the base station (e.g., gNB) through an RRC complete message, the battery (Power Saving) within the UAI as shown in FIG. 2 You can check the BW value “reducedBW-DL/UL-r16” proposed by the UE based on the related field value (e.g. reducedMaxBW-FR1/2) and the overheating (Over heating) related field value (e.g. reducedMaxBW-FR1/2). Through this, it is possible to indirectly check/find out the battery state/heating state as information related to the state of the terminal 10 (S10).

Accordingly, in the BWP dynamic control technique according to an embodiment of the present invention, the BWP dynamic control device 100 controls a specific size ( You can set the BWP of size (S20).

In the following description, the BWP of a specific size set based on the battery state/heating state of the terminal 10 confirmed from UAI will be referred to as 'Reference BWP'.

To explain an example, the BWP dynamic control device 100 monitors the battery status/heating of the terminal 10 among four different BWPs (BWP #1, #2, #3, #4) defined in the standard. You can select one according to the status check result and set it as the Reference BWP.

Meanwhile, the UAI delivery period is not defined in the standard, but considering that the RRC complete message is delivered when attaching to the network in idle mode, the UAI delivery period can generally be viewed as a second or minute scale period.

Accordingly, in the BWP dynamic control technique according to an embodiment of the present invention, the above-described steps S10 and S20 are the period in which the UAI of the terminal 10 is transmitted to the base station (e.g., gNB) (e.g., UAI on a second or minute scale) It can be performed periodically (delivery cycle = UAI-based BWP setting cycle) (S100).

And, the Reference BWP set for each UAI delivery cycle (= UAI-based BWP setup cycle) in step S100 (S10+S20) can be delivered and set to the terminal 10 through a DCI or RRC reconfiguration message (S20). .

In addition, in the present invention, the function of setting the Reference BWP using the UAI (battery status/thermal status) of the terminal 10 is basic, but the UAI An additional feature is the ability to dynamically adjust the BWP at a period shorter than the base BWP change (or setting) period (e.g., UAI delivery period on the second or minute scale).

To this end, in the BWP dynamic control technique according to an embodiment of the present invention, the BWP dynamic control device 100 transmits data between the terminal 10 and the core node (e.g., UPF in the case of 5G) for the terminal 10. The QoS Flow mapped/set to the primary data traffic, that is, the QoS Flow mapped to the traffic of the application used by the terminal 10, is checked (S40).

And, in the BWP dynamic control technique according to an embodiment of the present invention, the BWP dynamic control device 100 can adjust the preset BWP of the terminal 10 using the confirmed QoS Flow (S50).

To explain one embodiment, in the present invention, a QoS Flow group that maintains a preset BWP, a QoS Flow group that switches a BWP to a large size, and a QoS Flow group that switches the BWP to a small size (Size) ) can be divided into three QoS Flow groups: a QoS Flow group that is adjusted (switched) with a BWP of ).

Hereinafter, for convenience of explanation, the QoS Flow group that maintains the preset BWP is switched to the Stay group, and the QoS Flow group that is adjusted (switched) to a BWP of a large size (Size) is adjusted to a Step Up group (Switched to a BWP of a small size (Size)). The QoS Flow group that switches will be referred to as the Step Down group.

At this time, in the present invention, QoS Flow, which is mainly mapped to applications with moderate/occasional traffic characteristics (e.g., demand/pattern), is divided into Stay groups, and the QoS Flow that is mainly mapped to applications with traffic characteristics (e.g., demand/pattern) is large/frequent. QoS Flows that are mainly mapped to one application can be divided into the Step Up group, and QoS Flows that are mainly mapped to applications with small/infrequent traffic characteristics (e.g. demand/pattern) can be divided into the Step Down group.

Accordingly, continuing the description of the above-described embodiment, when the BWP dynamic control device 100 checks the QoS Flow mapped to the traffic of the application used by the terminal 10 as described above (S40), the confirmed QoS Flow belongs to Depending on the group, the preset BWP of the terminal 10 can be maintained or switched to a large size BWP or a small size BWP (S50).

For example, assuming that the preset BWP of the terminal 10 is the reference BWP (e.g., BWP #2) set based on the aforementioned UAI (battery status/thermal status), the BWP dynamic control device 100, If the QoS Flow mapped to the traffic of the application used by the terminal 10 belongs to the Stay group, the BWP (e.g., BWP #2) preset for the terminal 10 can be maintained without change.

Meanwhile, the BWP dynamic control device 100 switches the BWP to a BWP of a larger size when the QoS Flow mapped to the traffic of the application used by the terminal 10 belongs to the Step Up group (e.g., BWP # 2 -> #1), and if it belongs to the Step Down group, the BWP can be switched to a BWP of a smaller size (e.g. BWP #2 -> #3).

And the BWP dynamic control device 100, whenever a cycle shorter than the BWP setting cycle based on UAI (battery status/heat status) (hereinafter referred to as BWP adjustment cycle) arrives, QoS Flow-based BWP through steps S40 and S50. Adjustment/switch can be performed (S60 Yes -> S40).

In other words, the BWP dynamic control device 100 provides a cycle (hereinafter referred to as BWP adjustment cycle) that is shorter than the UAI-based BWP setting (or change) cycle (e.g., second or minute scale UAI delivery cycle) for the terminal 10. In this way, BWP adjustment/switch based on the QoS Flow of the terminal 10 is performed.

And, the BWP adjusted/switched to the BWP adjustment cycle in step S50 can be delivered and set to the terminal 10 through a DCI or RRC reconfiguration message.

According to the above description, in the BWP dynamic control technique according to an embodiment of the present invention, the BWP dynamic control device 100 controls each terminal unless the BWP dynamic control function (technique) of the present invention is turned off (S70 No). Regarding (10), as described above, the operation of setting the Reference BWP at each UAI delivery cycle (= UAI-based BWP setting cycle) and the operation of performing QoS Flow-based BWP adjustment/switch at each BWP adjustment cycle can be continued. .

As described above, according to the operating method of the BWP dynamic control device of the present invention, a more efficient and optimal BWP is dynamically provided to the terminal (UE) through UAI utilization of the terminal (UE) and indirect reflection of traffic of the terminal (UE). We are implementing a new BWP dynamic control technique that can be set to .

Accordingly, according to the present invention, by realizing a BWP dynamic control technique that can optimally utilize UAI when setting the BWP of the terminal (UE), there is an effect of reducing unnecessary power consumption of the terminal compared to the existing one, and furthermore, efficient operation without too frequent BWP changes. / Derive the effect of dynamically setting the optimal BWP.

A method of operating a BWP dynamic control device (BWP dynamic control technique) according to an embodiment of the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded on a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, etc., singly or in combination. Program instructions recorded on the medium may be specially designed and constructed for the present invention or may be known and usable by those skilled in the art of computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic media such as floptical disks. -Includes optical media (magneto-optical media) and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, etc. Examples of program instructions include machine language code, such as that produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter, etc. 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.

Although the present invention has been described in detail with reference to preferred embodiments so far, the present invention is not limited to the above-described embodiments, and the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the following claims. Anyone skilled in the art will recognize that the technical idea of the present invention extends to the extent that various changes or modifications can be made.

According to the BWP dynamic control device and the operation method of the BWP dynamic control device according to the present invention, a more efficient and optimal BWP is provided to the terminal (UE) through UAI utilization of the terminal (UE) and indirect reflection of traffic of the terminal (UE). In realizing a new BWP dynamic control technique that can be set dynamically, by going beyond the limitations of existing technology, the possibility of not only using the related technology but also marketing or selling the applied device is not only sufficient, but also realistically clear. It is an invention that has industrial applicability because it can be implemented.

100: BWP dynamic control device
110: Information confirmation unit 120: BWP setting unit
130: BWP adjustment unit

Claims (7)

an information confirmation unit that checks information related to the status of the terminal transmitted through an uplink message;
A BWP setting unit that sets a BWP (Bandwidth Part) of a specific size for the terminal based on the confirmed status-related information; and
A BWP dynamic control device comprising a BWP adjustment unit that adjusts a preset BWP of the terminal using specific information related to an application used by the terminal. According to claim 1,
The above status-related information is:
A BWP dynamic control device characterized in that it includes information confirmed in at least one related field of battery and heat within UAI (User Assistance Information) transmitted from the terminal to the base station. According to claim 1,
The above specific information is,
A BWP dynamic control device, characterized in that the QoS Flow is differently mapped according to the traffic characteristics of the application. According to claim 2,
The BWP setting unit,
As a result of checking from the status-related information, the BWP dynamic control device is characterized in that it sets a BWP of a smaller size when the remaining battery amount is small and the remaining battery amount is large, and sets a BWP of a smaller size when the remaining battery amount is large and when the heat generation is large, the BWP is set to a smaller size. . According to claim 3,
Multiple QoS Flows are divided into a QoS Flow group that maintains the preset BWP, a QoS Flow group that switches to a larger BWP, and a QoS Flow group that switches the BWP to a smaller BWP.
The BWP adjustment department,
A BWP dynamic control device that maintains the preset BWP of the terminal, switches to a larger BWP, or switches to a smaller BWP depending on the group to which the QoS Flow mapped to the traffic of the application used by the terminal belongs. . According to claim 1,
The BWP adjustment department,
A BWP dynamic control device characterized in that it performs BWP adjustment based on the specific information at a cycle shorter than the BWP setting cycle based on the state-related information. An information confirmation step of checking status-related information of the terminal transmitted through an uplink message;
A BWP setting step of setting a BWP (Bandwidth Part) of a specific size for the terminal based on the confirmed status-related information; and
A method of operating a BWP dynamic control device, comprising a BWP adjustment step of adjusting a preset BWP of the terminal using specific information related to an application used by the terminal.

Images