KR20150032148A - Dynamic resource management apparatus and method controlling interference of integrated satellite and terrestrial communication system - Google Patents

Abstract

Disclosed are an apparatus and a method for dynamic resource management for controlling interference in an integrated satellite and terrestrial system. The apparatus for dynamic resource management in an integrated satellite and terrestrial system comprises: a frequency band determination unit for determining a frequency band of a satellite beam and a frequency band of a radio signal based on interference information between a satellite beam and a radio signal which has the same set frequency band as that of the satellite beam; and a remote control unit for remotely controlling a space administration of a satellite network to output a satellite beam with the strength corresponding to the frequency band of the satellite beam, and remotely controlling a base station of a terrestrial network to output a radio signal with the strength corresponding to the frequency band of the radio signal.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dynamic resource management apparatus and method for interference control of a terrestrial-terrestrial communication system. 2. Description of the Related Art DYNAMIC RESOURCE MANAGEMENT APPARATUS AND METHOD CONTROLLING INTERFERENCE OF INTEGRATED SATELLITE AND TERRESTRIAL COMMUNICATION SYSTEM

The present invention relates to a dynamic resource management apparatus and method for interference control of a satellite terrestrial communication system, and more particularly, to a dynamic resource management apparatus and method for dynamic interference management of a satellite terrestrial communication system, To an apparatus and method for avoiding interference between a satellite beam and a wireless signal by minimizing the intensity of the satellite beam and the wireless signal.

A satellite terrestrial communication system is a system that provides both satellite communication and terrestrial communication services to one terminal. The satellite terrestrial combined communication system can efficiently use the frequency band by reusing the frequency band assigned to the satellite beam in the satellite network in the terrestrial network.

However, the conventional satellite terrestrial communication system arbitrarily allocates channels of available frequency bands to radio signals for satellite beams and terrestrial communication services. Therefore, a frequency band to which a larger power is allocated than the required bit rate of the satellite beam and the radio signal may be allocated to the satellite beam and the radio signal. At this time, as the unnecessary power is allocated, the intensity of the satellite beam and the intensity of the radio signal are unnecessarily increased, so that interference may occur between the satellite beam and the radio signal allocated to the same frequency band.

Therefore, there is a demand for a method capable of avoiding interference between a satellite beam and a radio signal.

The present invention can provide an apparatus and method for avoiding interference between a satellite beam and a wireless signal by minimizing the intensity of a satellite beam and a wireless signal by dynamically allocating power allocated to the satellite beam and the wireless signal based on the interference information have.

The dynamic resource management apparatus of the satellite terrestrial communication system according to an embodiment of the present invention is a dynamic resource management apparatus for a terrestrial digital terrestrial communication system that includes a satellite beam and a frequency band of a radio signal based on interference information between a satellite signal and a radio signal, A frequency band determining unit for determining a frequency band of the received signal; And a remote control unit for remotely controlling the satellite network to output the satellite beam at an intensity corresponding to the frequency band of the satellite beam and remotely controlling the terrestrial network base station to output a radio signal at an intensity corresponding to the frequency band of the radio signal .

The dynamic resource management apparatus according to an embodiment of the present invention includes a frequency band setting unit for setting a frequency band of a radio signal to be output by a terrestrial network base station receiving a satellite beam and a different satellite beam to be equal to a frequency band of a satellite beam .

The frequency band determining unit of the dynamic resource management apparatus according to an exemplary embodiment of the present invention determines a frequency band of a dynamic resource management apparatus based on a data request amount of a satellite beam, an average power consumed to output a satellite beam, an antenna gain of a satellite beam, The power to be consumed in average to output, and the antenna gain of the wireless signal.

The frequency band determining unit of the dynamic resource management apparatus according to an embodiment of the present invention can determine a frequency band that can minimize the intensity of the satellite beam and the intensity of the radio signal as the frequency band of the satellite beam and the frequency band of the radio signal.

The frequency band determining unit of the dynamic resource management apparatus according to an embodiment of the present invention can control the bandwidth of the radio signal based on the bandwidth of the satellite beam.

A satellite network system in a satellite terrestrial communication system according to an embodiment of the present invention includes: a beam generator for generating a satellite beam to be output as a coverage; And a satellite beam output unit that allocates a frequency band of a satellite beam determined based on interference between a satellite signal and a radio signal to which the same frequency band as the satellite beam is allocated, to the satellite beam and outputs the satellite beam.

The satellite beam output unit of the satellite network space station according to an embodiment of the present invention can output the satellite beam with the minimum intensity for servicing the data demand of the satellite beam using power corresponding to the frequency band of the satellite beam.

A terrestrial network base station of a satellite terrestrial communication system according to an embodiment of the present invention includes a receiver for receiving a frequency band of a radio signal determined based on an interference between a satellite beam and a radio signal to which the same frequency band as the radio signal is allocated; And a wireless communication unit for performing wireless communication by outputting a wireless signal to which the frequency band of the received wireless signal is allocated to the coverage of the terrestrial network.

The wireless communication unit of the terrestrial network base station according to an exemplary embodiment of the present invention can output a wireless signal with a minimum intensity for serving a data request amount of the wireless signal using power corresponding to the frequency band of the wireless signal.

According to an embodiment of the present invention, there is provided a dynamic resource allocation method comprising: determining a frequency band of a satellite beam and a frequency band of a radio signal based on interference information between a satellite beam and a radio signal having the same frequency band as the satellite beam; And remotely controlling the satellite network to output the satellite beam at an intensity corresponding to the frequency band of the satellite beam and remotely controlling the terrestrial network base station to output a radio signal at an intensity corresponding to the frequency band of the radio signal have.

A method of operating a satellite network space station according to an embodiment of the present invention includes: generating a satellite beam to be output as a coverage; And a step of allocating and outputting a frequency band of a satellite beam determined based on an interference between a satellite signal and a radio signal to which the same frequency band as the satellite beam is allocated, to the satellite beam and outputting.

A method of operating a terrestrial network, the method comprising: receiving a frequency band of a radio signal determined based on interference between a satellite signal and a radio signal to which the same frequency band as the radio signal is allocated; And outputting a radio signal having a frequency band of the received radio signal to the coverage of the terrestrial network to perform radio communication.

According to an embodiment of the present invention, the power allocated to the satellite beam and the radio signal is dynamically allocated based on the interference information, thereby minimizing the intensity of the satellite beam and the radio signal to avoid interference between the satellite beam and the radio signal have.

1 is a diagram illustrating a satellite terrestrial communication system according to an embodiment of the present invention.
2 is an example of a satellite terrestrial communication system according to an embodiment of the present invention.
3 is a diagram illustrating a dynamic resource management apparatus according to an embodiment of the present invention.
4 is a diagram illustrating a satellite network space station according to an embodiment of the present invention.
5 is a diagram illustrating a terrestrial network base station according to an embodiment of the present invention.
6 is an operation example of a satellite terrestrial communication system according to an embodiment of the present invention.
7 is a flowchart illustrating a dynamic resource management method according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dynamic resource management method according to an embodiment of the present invention can be performed by a dynamic resource management apparatus included in a satellite terrestrial communication system.

1 is a diagram illustrating a satellite terrestrial communication system according to an embodiment of the present invention.

Referring to FIG. 1, a satellite terrestrial communication system according to an embodiment of the present invention may include a dynamic resource management apparatus 100, a satellite network station 110, and a terrestrial network base station 120.

The satellite network space station 110 may generate a plurality of satellite beams and receive frequency bands to be allocated to the satellite beams from the dynamic resource management apparatus 100. Then, the satellite network space station 110 can allocate the received frequency band to each satellite beam and output it to each satellite network coverage. At this time, the coverage of the satellite network in which the satellite beam is output may include the coverage of a plurality of terrestrial networks smaller than the coverage of the satellite network.

The specific configuration and operation of the satellite network space station 110 will be described in detail with reference to FIG.

The terrestrial network base station 120 receives the satellite beam and outputs the radio signal corresponding to the received satellite beam to the coverage of the terrestrial network, thereby performing wireless communication of the terrestrial network. At this time, the frequency band allocated to the radio signal by the terrestrial network base station 120 may be different from the frequency band of the received satellite beam. Also, the terrestrial network base station 120 may perform wireless communication with another terrestrial network base station or a user terminal using a separate radio signal from the satellite beam.

The specific configuration and operation of the terrestrial network base station 120 will be described in detail with reference to FIG.

The dynamic resource management apparatus 100 can reuse the frequency band allocated to the satellite beam to the radio signal of the terrestrial network. Specifically, the dynamic resource management apparatus 100 may set the frequency band of the radio signal used in the coverage of the terrestrial network included in the coverage of another satellite network adjacent to the coverage of the satellite network to the same frequency band as that of the satellite beam.

In addition, the dynamic resource management apparatus 100 may control the intensity of the satellite beam output by the satellite network station 110 and the intensity of the radio signal output from the terrestrial network base station 120. The satellite beam and the radio signal may be output from the satellite network station 110 and the terrestrial network base station 120, respectively, to an intensity greater than a predetermined value to transmit information. However, the stronger the intensity of the satellite beam and the radio signal, the more interference may occur between the other satellite beams or the radio signals to which the same frequency channel is allocated. Accordingly, the dynamic resource management apparatus 100 controls the intensity of the satellite beam output by the satellite network station 110 and the intensity of the radio signal output from the terrestrial network base station 120 to a minimum intensity for transmitting information, Interference between the beam and the radio signal can be avoided.

At this time, the dynamic resource management apparatus 100 can allocate the bandwidths equally between the radio signals reusing the same frequency band as the satellite beam and the satellite beam. At this time, the radio signals may be radio signals that reuse the same frequency band as the satellite beam among the coverage of the ground network included in the coverage of another satellite network adjacent to the coverage of the satellite network from which the satellite beam is output.

For example, the dynamic resource management device 100 may be a gateway earth station connecting a satellite network with another communication network such as a terrestrial network.

The specific configuration and operation of the dynamic resource management device 100 will be described in detail below with reference to FIG.

2 is an example of a satellite terrestrial communication system according to an embodiment of the present invention.

The satellite network 210 may output satellite beams to the coverage 200 of a plurality of satellite networks, as shown in FIG. At this time, the satellite network space station 210 may form a communication link with the gateway earth station 220. The satellite network 210 may output the satellite beams to the frequency band allocated by the gateway earth station 220.

At this time, the coverage 200 of the satellite network may include at least one coverage of the ground network, which is smaller than the satellite network. For example, the first satellite network coverage 230 may include a first terrestrial coverage 231 and a second terrestrial coverage 232. The gateway earth station 220 may reuse the frequency band allocated to the satellite beam in the coverage of the terrestrial network not included in the coverage 200 of the satellite network.

For example, the gateway earth station 220 may assign the frequency band W ₁ to the first satellite beam output to the first satellite network coverage 230. The gateway earth station 220 transmits the third radio signal used in the third ground network coverage 241, the fourth radio signal used in the fourth ground network coverage 251, and the fourth radio signal used in the fifth ground network coverage 261 The frequency band W ₁ can be allocated to the fifth radio signal to be used. In this case, since the third ground network coverage 241, the fourth ground network coverage 251, and the fifth ground network coverage 261 are the coverage of the terrestrial network not included in the first satellite network coverage 230, The interference between the third radio signal using the first radio signal, the fourth radio signal and the fifth radio signal and the first satellite beam may be small.

In addition, the gateway earth station 220 receives the frequency band W ₂ allocated to the second satellite beam output to the second satellite network coverage 240 and the frequency band W ₂ allocated to the third satellite beam output to the third satellite network coverage 250 ₃ to a second wireless signal used in the first terrestrial network coverage 231 included in the first satellite network coverage 230 and a third wireless signal used in the second terrestrial network coverage 232 . At this time, because the first terrestrial network coverage 231 is not included in the second satellite network coverage 240 and the third terrestrial network coverage 232 is not included in the third satellite network coverage 250, The interference between the first radio signal and the second satellite beam, the second radio signal, and the third satellite beam may be small.

That is, the gateway earth station 220 can reuse the frequency band allocated to the satellite beam in the coverage of the terrestrial network not included in the coverage 200 of the satellite network, thereby minimizing interference and increasing the spectrum efficiency and communication capacity.

However, when the strength of at least one of the radio signal and the satellite beam using the same frequency is strong, the intensity of the other radio signal using the same frequency , Or can interfere with the satellite beam. Thus, the gateway earth station 220 can avoid the interference between the radio signal and the satellite beam by controlling the intensity of the satellite beam or the intensity of the radio signal to a minimum intensity capable of transmitting information.

3 is a diagram illustrating a dynamic resource management apparatus according to an embodiment of the present invention.

3, the dynamic resource management apparatus 100 according to an exemplary embodiment of the present invention may include a frequency band setting unit 310, a frequency band determining unit 320, and a remote control unit 330.

The frequency band setting unit 310 may set the frequency band of the radio signal to be output by the terrestrial network base station receiving the satellite beam and the different satellite beams to be equal to the frequency band of the satellite beam. Specifically, the frequency band setting unit 310 may set the frequency band of the radio signal used in the coverage of the terrestrial network not included in the coverage of the satellite network to the same frequency band as that of the satellite beam. For example, the frequency band setting unit 310 may select at least one radio signal among the radio signals used in the coverage of the terrestrial network included in the coverage of another satellite network adjacent to the coverage of the satellite network. Then, the frequency band setting unit 310 can reuse the frequency band allocated to the satellite beam as the frequency band of the radio signal by setting the frequency band of the selected radio signal to the same frequency band as that of the satellite beam.

The frequency band determining unit 320 determines the frequency band of the satellite beam and the frequency band of the radio signal based on the interference information between the satellite beam and the radio signal set by the frequency band setting unit 310 in the same frequency band as the satellite beam . The interference information between the satellite beam and the radio signal is consumed on average to output the data demand of the satellite beam, the power consumed to output the satellite beam, the antenna gain of the satellite beam, the data demand of the radio signal, And the antenna gain of the wireless signal.

The intensity of the satellite beam output by the satellite network space station 110 may be determined according to the magnitude of the power corresponding to the frequency band allocated to the satellite beam. Also, the strength of the radio signal output by the terrestrial network base station 120 may be determined according to the magnitude of the power corresponding to the frequency band allocated to the radio signal. That is, the intensity of the satellite beam output by the satellite network station 110 and the intensity of the radio signal output by the terrestrial network base station 120 are determined by the frequency band of the satellite beam determined by the frequency band determining unit 320 and the frequency band of the radio signal .

Accordingly, the frequency band determining unit 320 determines the frequency band of the satellite beam to minimize the intensity of the satellite beam and the intensity of the radio signal, You can control to the minimum required intensity. The frequency band determining unit 320 determines the frequency band of the radio signal set by the frequency band setting unit 310 to be equal to the frequency band of the satellite beam, It can be controlled to the minimum intensity required to service.

In addition, the frequency band determining unit 320 can control the bandwidth of the wireless signal based on the bandwidth of the satellite beam. For example, the frequency band determining unit 320 may allocate the bandwidth of the radio signal set by the frequency band setting unit 310 to be equal to the bandwidth of the satellite beam.

The interference generated in the satellite terrestrial communication system according to an embodiment of the present invention may include interference caused by the radio signal to the satellite beam and interference caused by the satellite beam to the radio signal. For example, when a user located in the coverage of a satellite beam communicates with a base station in the terrestrial network, a communication signal transmitted and received between the user's terminal and the base station can interfere with a satellite beam using the same frequency band as the communication signal have. In addition, when a user located in the coverage of the satellite beam establishes a communication link with the satellite beam to perform communication with the satellite network, a satellite beam transmitted and received between the user's terminal and the satellite network is transmitted to a terrestrial network It is possible to give an interference to the communication signal of

The frequency band determining unit 320 may determine E _b (i) / N _o , which is necessary power consumption for outputting a satellite beam or a communication signal in consideration of the interference environment as in the above embodiment. For example, E _b (i) / N ₀ can be expressed by Equation (1).

는 시스템 내 동일한 주파수 대역을 사용하여 서로 간섭의 영향권 내에 있는 위성 빔과 셀 그룹에 관련된 항일 수 있다. 예를 들어, 주파수 재 사용률인 N이 3인 시스템에서

는 수학식 2와 같이 나타낼 수 있다.In this case, N is the frequency reuse factor of the satellite terrestrial communication system, and the diagonal element

May be terms related to a satellite beam and a cell group that are within the influence of interference with each other using the same frequency band in the system. For example, in a system where frequency reuse factor N is 3

Can be expressed by Equation (2).

일 수 있다. 또한, p_k ⁱ는 평균 소비 전력일 수 있다. 구체적으로 p_k ⁱ는 위성 빔 또는 무선 신호가 받는 간섭을 고려하여 평균화된 필요 소비 전력인 E_b/(N₀+I₀)일 수 있다. 이때, p_k ⁱ는 샤논 용량을 달성 할 수 있는 스펙트럼 효율에 따라 적합한 AMC(Adaptive Power Control)를 적용하여 결정될 수 있다. 그리고, E_b, N_{0 ,} I₀는 각각 비트 당 에너지, 열 잡음 밀도, 간섭 전력 밀도일 수 있다. 이때, p_k ⁱ는 i번째 셀의 트래픽 요구량을 완전히 서비스하는데 필요한 통신 용량인 C_i=W_ilog₂(1+p_k ⁱ)을 기초로 수학식 3으로 계산할 수도 있다. In this case, W _i may be an i-th frequency band allocated to a satellite beam or a radio signal when the satellite terrestrial communication system divides the frequency band W _tot by N. At this time, the sum of the frequency bands allocated to the satellite beam or the radio signal can not exceed the bandwidth of the frequency band W _tot used by the satellite terrestrial communication system,

Lt; / RTI > Also, _pk ⁱ may be an average power consumption. Specifically, p _k ⁱ may be E _b / (N ₀ + I ₀ ), which is the required power consumption averaged considering the interference received by the satellite beam or the wireless signal. At this time, p _k ⁱ can be determined by applying a suitable AMC (Adaptive Power Control) according to the spectral efficiency to achieve the Shannon capacity. And E _b , N _{0 , and} I ₀ may be energy per bit, thermal noise density, and interference power density, respectively. In this case, p _k ⁱ may be calculated by Equation (3) based on C _i = W _i log ₂ (1 + p _k ⁱ ), which is a communication capacity required to completely service the traffic demand of the i- th cell.

And k may be a constant for distinguishing a radio signal from a satellite beam using the same frequency band. For example, k = 1 may be a satellite beam, and k = 2, 3 may be radio signals using the same frequency band as the satellite beam, respectively. Specifically, when the first satellite beam is a satellite beam using the frequency band W ₁ , the second satellite beam is a satellite beam using the frequency band W ₂ , and the third satellite beam is a satellite beam using the frequency band W ₃ , p ₁ ¹ is the required power consumption for satellite beam 1, and p ₂ ¹ , p ₃ ¹ May be the required power consumption for the radio signal using the frequency band W ₁ from the coverage of the second satellite beam and the coverage of the terrestrial network included in the coverage of the third satellite beam, respectively.

Also, R _bk ⁱ may be a bit rate required by a satellite beam or a radio signal. For example, R _b1 ¹ is the bit rate required by satellite beam 1 using frequency band W ₁ , and R _b2 ¹ is the wireless bandwidth using frequency band W ₁ from the coverage of the terrestrial network included in the coverage of the second satellite beam. It may be the bit rate required by the signal. And, G _{k , k} ⁱ = g _{k, k '} / g _{k, k} can be antenna gain related constants. For example, g _{k , k '} may be an antenna gain from the k'th satellite beam or radio signal to the kth satellite beam or radio signal. The antenna gain from the k'th satellite beam or radio signal to the kth satellite beam or radio signal may be the amount of interference given to the kth satellite beam or radio signal by the k'th satellite beam or radio signal. Also, _{gk , k} may be its own antenna gain in the kth satellite beam or radio signal.

For example, the information of the satellite beam using the frequency band W ₁ and the information of the radio signal may be as shown in Table 1. The information of the satellite beam using the frequency band W ₂ and the information of the radio signal may be as shown in Table 2. The information of the satellite beam using the frequency band W ₃ and the information of the radio signal may be as shown in Table 3.

The frequency band determining unit 320 can increase the efficiency of the satellite terrestrial communication system by minimizing the power consumption E _b / N ₀ required to satisfy the required bit rate of the satellite beam or the radio signal. At this time, in order to minimize the interference in the satellite terrestrial communication system, the frequency band determining unit 320 may set the bandwidths of the satellite beam and the radio signal using the same frequency band to be the same. For example, the operation of the frequency band determining unit 320 can be modeled as shown in Equation (4).

Equation 4 is the sum of the power consumption E _b / N ₀ of the radio signal of the terrestrial network using the same frequency band W _i in the coverage of the satellite beam using the frequency band W _i and the other satellite beam adjacent to the coverage of the satellite beam have. Therefore, the following equation (4) can be derived using Equation (1) and Equation (2) as shown in Equation (5).

Since the sum of the frequency bands allocated to the satellite beam and the radio signal in the satellite terrestrial communication system is limited to the bandwidth used by the satellite terrestrial communication system, the frequency band determining unit 320 determines Equation (6) and Equation .

Equation (7) may be a constraint condition for allocating a bandwidth equal to or greater than 0 to the satellite beam and the radio signal. In order to solve the optimization problem of the constraint condition such as Equation (5) and Equation (6) and Equation (6) and Equation (7), the frequency band determining unit (320) applies the Lagrangian function theory, Can be used.

과

는 각각 라그랑지 계수(Lagrange Multiplier)로, KKT(Karush-Kuhn-Tucker) 정리에 의해 정리하면 수학식 9과 수학식 10를 만족할 수 있다.At this time,

and

Are Lagrange multipliers, respectively, and can be expressed by the KKT (Karush-Kuhn-Tucker) theorem, so that Equation (9) and Equation (10) can be satisfied.

이므로, 수학식 10를 만족시키기 위해서는

는 0일 수 있다. 따라서, KKT 정리의

의 조건을 사용하여 수학식 8을

에 대하여 정리하면 수학식 11이 될 수 있다. As shown in Equation (7)

Therefore, in order to satisfy the expression (10)

May be zero. Therefore, KKT's theorem

Lt; RTI ID = 0.0 > (8) < / RTI &

The following equation (11) can be obtained.

At this time, A, B, C, D, E, and F are expressed by Equation (12).

The equation (13) can be obtained by summarizing equation (12) with respect to W _i .

A frequency band determination section 320 is a satellite beam, or radio signals capable of minimizing the power required to service the bit rate occurs in the coverage of the coverage and the terrestrial network for each satellite network by obtaining the year W _i of the equation according to equation (13) Can be determined.

The remote control unit 330 may remotely control the satellite network 110 to output the satellite beam with an intensity corresponding to the frequency band of the satellite beam determined by the frequency band determining unit 320. [ The remote control unit 330 may remotely control the terrestrial network base station 120 to output a radio signal at an intensity corresponding to a frequency band of the radio signal determined by the frequency band determining unit 320. [

Specifically, the remote control unit 330 may transmit to the satellite network space station 110 a frequency band of the satellite beam determined by the frequency band determining unit 320 and a control signal for causing the satellite network station 110 to output the satellite beam. The remote control unit 330 may transmit the frequency band of the radio signal determined by the frequency band determining unit 320 and the control signal for causing the terrestrial network base station 120 to output a radio signal to the terrestrial network base station 120.

Next, the satellite network space station 110 allocates the frequency band of the received satellite beam to the satellite beam, and outputs the satellite beam according to the received control signal. At this time, the satellite network space station 110 may output the satellite beam using power corresponding to the frequency band of the satellite beam. The intensity of the satellite beam output by the satellite network station 110 may be the minimum intensity required to service the data demand of the satellite beam.

In addition, the terrestrial network base station 120 may allocate the frequency band of the received radio signal to the radio signal, and output the radio signal according to the received control signal. At this time, the terrestrial network base station 120 can output a radio signal using power corresponding to the frequency band of the radio signal. At this time, the strength of the radio signal output by the terrestrial network base station 120 may be a minimum strength required to service the data demand of the radio signal.

The monitoring unit 340 may monitor the interference information of the radio signal and the interference information of the satellite beam. Specifically, the monitoring unit 340 monitors the data amount of the satellite beam, the average power consumed to output the satellite beam, the antenna gain of the satellite beam, the data demand amount of the radio signal, the power consumed to output the radio signal, And whether the antenna gain of the wireless signal changes.

If at least one of the interference information of the wireless signal and the interference information of the satellite beam changes, the monitoring unit 340 may request the frequency band determining unit 320 to re-determine the frequency band. At this time, the frequency band determining unit 320 can determine the frequency band of the satellite beam and the frequency band of the radio signal based on the interference information of the changed radio signal and the interference information of the satellite beam.

4 is a diagram illustrating a satellite network space station according to an embodiment of the present invention.

Referring to FIG. 4, the satellite network space station 110 according to an embodiment of the present invention may include a beam generator 410, a frequency band receiver 420, and a satellite beam output unit 420.

The beam generating unit 410 may generate a plurality of satellite beams to be output by the coverage of the satellite network.

The frequency band receiver 420 can receive the frequency band of the satellite beam determined by the dynamic resource manager 110 from the dynamic resource manager 100. [ At this time, the frequency band of the satellite beam received by the frequency band receiver 420 is determined by the dynamic resource management apparatus 100 based on the interference between the satellite signal and the radio signal to which the same frequency band as the satellite beam is allocated, And may be a frequency band determined to output a satellite beam with a minimum intensity for service.

The satellite beam output unit 430 may allocate the frequency band received by the frequency band receiving unit 420 to a satellite beam generated by the beam generating unit 410 and output the frequency band. At this time, the satellite beam output unit 430 can set the power for outputting the satellite beam for each frequency band. The satellite beam output unit 430 outputs the satellite beam using the power corresponding to the received frequency band so that the satellite beam can be output to the satellite beam at a minimum intensity for servicing the data demand of the satellite beam without additional equipment for controlling the power. Can be output.

5 is a diagram illustrating a terrestrial network base station according to an embodiment of the present invention.

Referring to FIG. 5, the terrestrial network base station 120 according to an embodiment of the present invention may include a frequency band receiver 510 and a wireless communication unit 520.

The frequency band receiver 510 can receive the frequency band of the radio signal from the dynamic resource management device 100. [ At this time, the frequency band of the radio signal received by the frequency band receiving unit 510 is determined by the dynamic resource management apparatus 100 based on the interference between the satellite beam and the radio signal to which the same frequency band as the radio signal is allocated, And may be a frequency band determined to output a radio signal with a minimum intensity for service.

In addition, the frequency band receiver 510 may receive a satellite beam to establish a communication link with the satellite network 110, and may perform satellite communication through the satellite network 110. For example, the frequency band receiver 510 may establish a communication link with the dynamic resource management device 100 via the satellite network 100 and receive the frequency band of the radio signal from the dynamic resource management device 100 . In addition, the frequency band receiver 510 may perform satellite communication with the terrestrial network base station located in another satellite network coverage through the satellite network.

The wireless communication unit 520 can perform wireless communication by outputting a wireless signal allocated to the frequency band received by the receiving unit 510 to the coverage of the terrestrial network. At this time, the wireless communication unit 520 can set a power for outputting a wireless signal for each frequency band. The wireless communication unit 520 outputs a wireless signal using the power corresponding to the received frequency band, thereby outputting the wireless signal with a minimum intensity for servicing the data request amount of the wireless signal without additional equipment for controlling the power can do.

6 is an operation example of a satellite terrestrial communication system according to an embodiment of the present invention.

, 제1 위성 빔의 요구 비트율 R_b1 ⁽¹⁾, 제1 위성 빔의 평균 소비 전력 p₁ ⁽¹⁾, 제1 위성 빔의 안테나 이득 G₁₂ ⁽¹⁾, G₁₃ ⁽¹⁾, 제3 무선 신호의 필요 소비 전력

, 제3 무선 신호의 요구 비트율 R_b2 ⁽¹⁾, 제3 무선 신호의 평균 소비 전력 p₂ ⁽¹⁾, 제3 무선 신호의 안테나 이득 G₂₁ ⁽¹⁾, 제5 무선 신호의 필요 소비 전력

, 제5 무선 신호의 요구 비트율 R_b3 ⁽¹⁾, 제5 무선 신호의 평균 소비 전력 p₃ ⁽¹⁾, 제5 무선 신호의 안테나 이득 G₃₁ ⁽¹⁾을 수학식 12에 입력한 결과인 W₁을 제1 위성 빔과 제3 무선 신호 및 제5 무선 신호의 주파수 대역으로 결정할 수 있다.In FIG. 6, the first satellite beam output to the first satellite network coverage 610, the third wireless signal used in the third terrestrial network coverage 621 included in the second satellite network coverage 620, and the third satellite network coverage 630 The fifth radio signal used in the fifth terrestrial network coverage 631 may be set to the same frequency band. At this time, based on the interference information of the first satellite beam, the third radio signal, and the fifth radio signal, the dynamic resource management apparatus 100 sets the frequency bands of the first satellite beam, the third radio signal, and the fifth radio signal to W ₁ . For example, the dynamic resource management apparatus 100 may calculate the required power consumption of the first satellite beam

The required bit rate R _b1 ⁽¹⁾ of the first satellite beam, the average power consumption p ₁ ⁽¹⁾ of the first satellite beam, the antenna gain G ₁₂ ⁽¹⁾ , G ₁₃ ⁽¹⁾ , the required power consumption of the third radio signal

The required bit rate R _b2 ⁽¹⁾ of the third radio signal, the average power consumption p ₂ ⁽¹⁾ of the third radio signal, the antenna gain G ₂₁ ⁽¹⁾ , the required power consumption of the fifth radio signal

The required bit rate R _b3 ⁽¹⁾ of the fifth radio signal, the average power consumption p ₃ ⁽¹⁾ of the fifth radio signal, the antenna gain W ₁ , which is a result of inputting G ₃₁ ⁽¹⁾ into Equation (12 ⁾ , can be determined as the frequency bands of the first satellite beam, the third wireless signal, and the fifth wireless signal.

, 제2 위성 빔의 요구 비트율 R_b1 ⁽²⁾, 제2 위성 빔의 평균 소비 전력 p₁ ⁽²⁾, 제2 위성 빔의 안테나 이득 G₁₂ ⁽²⁾, G₁₃ ⁽²⁾, 제1 무선 신호의 필요 소비 전력

, 제1 무선 신호의 요구 비트율 R_b2 ⁽²⁾, 제1 무선 신호의 평균 소비 전력 p₂ ⁽²⁾, 제1 무선 신호의 안테나 이득 G₂₁ ⁽²⁾, 제6 무선 신호의 필요 소비 전력

, 제6 무선 신호의 요구 비트율 R_b3 ⁽²⁾, 제6 무선 신호의 평균 소비 전력 p₃ ⁽²⁾, 제6 무선 신호의 안테나 이득 G₃₁ ⁽²⁾을 수학식 12에 입력한 결과인 W₂를 제2 위성 빔과 제1 무선 신호 및 제6 무선 신호의 주파수 대역으로 결정할 수 있다.In FIG. 6, the second satellite signal output to the second satellite network coverage 620, the first wireless signal used in the first terrestrial coverage 611 included in the first satellite network coverage 610, The sixth radio signal used in the sixth terrestrial network coverage 632 included in the second radio network 630 may be set to the same frequency band. At this time, the dynamic resource management apparatus 100 sets the frequency bands of the second satellite beam, the first radio signal, and the sixth radio signal to W ₂ (2) based on the interference information of the second satellite beam and the first radio signal and the sixth radio signal, . For example, the dynamic resource management device 100 may determine the required power consumption of the second satellite beam

The required bit rate R _b1 ⁽²⁾ of the second satellite beam, the average power consumption p ₁ ⁽²⁾ of the second satellite beam, the antenna gain G ₁₂ ⁽²⁾ , G ₁₃ ⁽²⁾ , the required power consumption of the first radio signal

The required bit rate R _b2 ⁽²⁾ of the first radio signal, the average power consumption p ₂ ⁽²⁾ of the first radio signal, the antenna gain G ₂₁ ⁽²⁾ , the required power consumption of the sixth radio signal

The required bit rate R _b3 ⁽²⁾ of the sixth radio signal, the average power consumption p ₃ ⁽²⁾ of the sixth radio signal, the antenna gain W _2, which is the result of inputting G ₃₁ ⁽²⁾ in Equation (12 ⁾ , can be determined as the frequency band of the second satellite beam, the first radio signal and the sixth radio signal.

, 제3 위성 빔의 요구 비트율 R_b1 ⁽³⁾, 제3 위성 빔의 평균 소비 전력 p₁ ⁽³⁾, 제3 위성 빔의 안테나 이득 G₁₂ ⁽³⁾, G₁₃ ⁽³⁾, 제2 무선 신호의 필요 소비 전력

, 제2 무선 신호의 요구 비트율 R_b2 ⁽³⁾, 제2 무선 신호의 평균 소비 전력 p₂ ⁽³⁾, 제2 무선 신호의 안테나 이득 G₂₁ ⁽³⁾, 제4 무선 신호의 필요 소비 전력

, 제4 무선 신호의 요구 비트율 R_b2 ⁽³⁾, 제4 무선 신호의 평균 소비 전력 p₃ ⁽³⁾, 제4 무선 신호의 안테나 이득 G₂₁ ⁽³⁾을 수학식 12에 입력한 결과인 W₃을 제3 위성 빔과 제2 무선 신호 및 제4 무선 신호의 주파수 대역으로 결정할 수 있다.
In FIG. 6, the third satellite signal output to the third satellite network coverage 630, the second wireless signal used in the second terrestrial coverage 612 included in the first satellite network coverage 610, The fourth radio signal used in the fourth terrestrial network coverage 622 included in the second radio network 620 may be set to the same frequency band. In this case, the dynamic resource management system 100 includes a third satellite beam as a second radio signal and a fourth frequency band of a third satellite beam as a second radio signal and a fourth wireless signal based on the interference information of the wireless signal W ₃ . For example, the dynamic resource management apparatus 100 may calculate the required power consumption of the third satellite beam

A third bit-rate requirements of the satellite beams _b1 R ^(3), the third average power consumption of the satellite beam p ₁ ^(3), the antenna gain of the third satellite beam G ₁₂ ⁽³⁾ , G ₁₃ ⁽³⁾ , the required power consumption of the second radio signal

A second bit-rate requirement of the radio signal R _b2 ^(3), a second average power consumption of a radio signal p ₂ ^(3), a second antenna gain of a wireless signal G ₂₁ ⁽³⁾ , the required power consumption of the fourth radio signal

, Fourth _b2 required bit rate of the radio signal R ^(3), a fourth average power consumption of a radio signal p ₃ ^(3), the antenna gain of the fourth radio signal W _3, which is the result of inputting G ₂₁ ⁽³⁾ into Equation (12 ⁾ , can be determined as the frequency band of the third satellite beam, the second radio signal, and the fourth radio signal.

7 is a flowchart illustrating a dynamic resource management method according to an embodiment of the present invention.

In step 710, the frequency band setting unit 310 can select a radio signal to be set to the same frequency band as the satellite beam. Specifically, the frequency band setting unit 310 may select at least one radio signal among the radio signals used in the coverage of the terrestrial network included in the coverage of another satellite network adjacent to the coverage of the satellite network. Then, the frequency band setting unit 310 can reuse the frequency band allocated to the satellite beam as the frequency band of the radio signal by setting the frequency band of the selected radio signal to the same frequency band as that of the satellite beam.

In step 720, the frequency band determining unit 320 determines a frequency band of a satellite beam and a frequency band of a radio signal based on interference information between a satellite beam and a radio signal set to the same frequency band as the satellite beam in step 710 Can be determined. At this time, the frequency band determining unit 320 determines the frequency band of the satellite beam to minimize the intensity of the satellite beam and the intensity of the radio signal, thereby determining the intensity of the satellite beam as the data demand of the satellite beam You can control to the minimum required intensity. The frequency band determining unit 320 determines the frequency band of the radio signal set by the frequency band setting unit 310 to be equal to the frequency band of the satellite beam, It can be controlled to the minimum intensity required to service.

In step 730, the remote control unit 330 may remotely control the satellite network 110 to output the satellite beam with an intensity corresponding to the frequency band of the satellite beam determined in step 730. The remote control unit 330 may remotely control the terrestrial network base station 120 to output a radio signal with an intensity corresponding to the frequency band of the radio signal determined in step 730. [ Specifically, the remote control unit 330 may transmit to the satellite network space station 110 a frequency band of the satellite beam determined by the frequency band determining unit 320 and a control signal for causing the satellite network station 110 to output the satellite beam. The remote control unit 330 may transmit the frequency band of the radio signal determined by the frequency band determining unit 320 and the control signal for causing the terrestrial network base station 120 to output a radio signal to the terrestrial network base station 120.

In step 740, the satellite network space station 110 may assign the frequency band of the satellite beam received in step 730 to the satellite beam. In addition, the terrestrial network base station 120 may allocate the frequency band of the radio signal received in step 730 to the radio signal.

In step 750, the satellite network 110 may output the satellite beam in accordance with the control signal received in step 730. At this time, the satellite network space station 110 may output the satellite beam using the power corresponding to the frequency band of the satellite beam allocated in step 740. The intensity of the satellite beam output by the satellite network station 110 may be the minimum intensity required to service the data demand of the satellite beam.

In addition, the terrestrial network base station 120 may output a radio signal in accordance with the control signal received in step 730. At this time, the terrestrial network base station 120 may output a radio signal using the power corresponding to the frequency band of the radio signal allocated in step 740. At this time, the strength of the radio signal output by the terrestrial network base station 120 may be a minimum strength required to service the data demand of the radio signal.

The present invention can dynamically allocate a frequency band to be allocated to the satellite beam and the radio signal based on the interference information, thereby minimizing the amount of power used for outputting the satellite beam and the radio signal. By minimizing the magnitude of the power to be used for outputting the satellite beam and the radio signal, interference between the satellite beam and the radio signal can be avoided by minimizing the intensity of the satellite beam and the radio signal.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those of ordinary skill 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. This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the claims.

100: Dynamic resource management device
110: Satellite network space agency
120: ground network base station
310: Frequency band setting unit
320: Frequency band determining unit
330: remote control unit

Claims (20)

A frequency band determining unit for determining a frequency band of a satellite beam and a frequency band of a radio signal based on interference information between a satellite beam and a radio signal having the same frequency band as that of the satellite beam; And
A remote control unit for remotely controlling a satellite network to output a satellite beam at an intensity corresponding to a frequency band of the satellite beam and remotely controlling the terrestrial network base station to output a radio signal at an intensity corresponding to a frequency band of the radio signal,
The dynamic resource management apparatus comprising: The method according to claim 1,
A frequency band setting unit for setting a frequency band of the radio signal to be output by the terrestrial network base station receiving the satellite beam and different satellite beams to be equal to the frequency band of the satellite beam,
Further comprising: The method according to claim 1,
Wherein the frequency band determining unit comprises:
The data amount of the satellite beam, the average power consumed to output the satellite beam, the antenna gain of the satellite beam, the data demand amount of the radio signal, the power consumed on average to output the radio signal, And determines a frequency band of the satellite beam and the wireless signal based on the one of the frequency bands. The method according to claim 1,
Wherein the frequency band determining unit comprises:
A dynamic resource management apparatus for determining a frequency band capable of minimizing a strength of a satellite beam and a strength of a radio signal as a frequency band of a satellite beam and a frequency band of a radio signal. The method according to claim 1,
Wherein the frequency band determining unit comprises:
And controls the bandwidth of the wireless signal based on the bandwidth of the satellite beam. A beam generator for generating a satellite beam to be output as a coverage; And
A satellite beam output unit for allocating a frequency band of a satellite beam determined based on an interference between a satellite signal and a radio signal to which the same frequency band as the satellite beam is allocated,
Satellite networks. The method according to claim 6,
Wherein the satellite beam output unit comprises:
A satellite space station that outputs a satellite beam with a minimum intensity to service the data demand of the satellite beam using power corresponding to the frequency band of the satellite beam. A receiver for receiving a frequency band of a radio signal determined based on an interference between a radio signal and a satellite beam to which the same frequency band as the radio signal is allocated; And
A radio communication unit for outputting a radio signal to which the frequency band of the received radio signal is allocated to the coverage of the terrestrial network,
And a base station. 9. The method of claim 8,
The wireless communication unit includes:
A ground network base station that outputs a radio signal with a minimum intensity for servicing a data request amount of a radio signal using power corresponding to a frequency band of the radio signal. 9. The method of claim 8,
The wireless communication unit includes:
Receives a satellite beam, outputs a radio signal based on the received satellite beam,
Wherein the frequency band of the radio signal includes:
Wherein the frequency band of the satellite beam received by the wireless communication unit is different from the frequency band of the satellite beam received by the wireless communication unit. Determining a frequency band of a satellite beam and a frequency band of a radio signal based on interference information between a satellite beam and a radio signal having the same frequency band as the satellite beam; And
Remotely controlling a satellite network to output a satellite beam at an intensity corresponding to a frequency band of the satellite beam and remotely controlling the terrestrial network base station to output a radio signal at an intensity corresponding to the frequency band of the radio signal
The dynamic resource management method comprising: 12. The method of claim 11,
A step of setting a frequency band of the radio signal to be output by the terrestrial network base station receiving the satellite beam and different satellite beams to be equal to the frequency band of the satellite beam
The dynamic resource management method further comprising: 12. The method of claim 11,
Wherein the determining the frequency band comprises:
The data amount of the satellite beam, the average power consumed to output the satellite beam, the antenna gain of the satellite beam, the data demand amount of the radio signal, the power consumed on average to output the radio signal, And determining a frequency band of the satellite beam and the wireless signal based on the one of the frequency bands. 12. The method of claim 11,
Wherein the determining the frequency band comprises:
A dynamic resource management method for determining a frequency band capable of minimizing a strength of a satellite beam and a radio signal as a frequency band of a satellite beam and a frequency band of a radio signal. 12. The method of claim 11,
Wherein the determining the frequency band comprises:
And controlling the bandwidth of the wireless signal based on the bandwidth of the satellite beam. Generating a satellite beam to be output as a coverage; And
Allocating to the satellite beam a frequency band of a satellite beam determined based on interference between a satellite signal and a radio signal to which the same frequency band as the satellite beam is allocated,
Wherein the satellite is a satellite. 17. The method of claim 16,
Wherein the outputting step comprises:
And outputting the satellite beam with a minimum intensity to service the data demand of the satellite beam using power corresponding to the frequency band of the satellite beam. The method comprising: receiving a frequency band of a radio signal determined based on an interference between a radio signal and a satellite beam to which the same frequency band as the radio signal is allocated; And
Performing wireless communication by outputting a radio signal to which the frequency band of the received radio signal is allocated to the coverage of the terrestrial network
The base station comprising: 19. The method of claim 18,
The step of performing the wireless communication includes:
A method of operating a terrestrial network base station that outputs a radio signal with a minimum intensity for servicing a data request amount of a radio signal using power corresponding to a frequency band of the radio signal. 19. The method of claim 18,
The step of performing the wireless communication includes:
Outputs a radio signal based on the received satellite beam,
Wherein the frequency band of the radio signal includes:
Wherein the frequency band of the satellite beam received by the wireless communication unit is different from the frequency band of the satellite beam received by the wireless communication unit.

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