KR20180106960A - Operation method of communication node in communication network - Google Patents

Abstract

Disclosed is an operation method of a communication node divided according to function support of a base station in a communication network. The operation method comprises the steps of: generating a digital pulse signal based on high-speed clock synthesis for a time synchronization signal used for synchronous operation of a communication node; performing a count on the digital pulse signal based on a pre-acquired notification setting value to control the synchronous operation of the communication node; generating a pulse signal corresponding to the notification setting value based on the result of the count; and performing a function of the communication node divided according to function support of the base station by performing an operation indicated by the generated pulse signal.

Description

[0001] OPERATION METHOD OF COMMUNICATION NODE IN COMMUNICATION NETWORK [0002]

The present invention relates to a method of operating a communication node in a communication network, and more particularly, to an operating method for controlling the synchronization of a communication node performing a divided function of a base station in a communication network.

The communication system may be a core network (e.g., a mobility management entity (MME), a serving gateway (SGW), a packet data network (PDW) A small base station, a relay, etc.), a terminal, and the like. Communication between a base station and a terminal may be performed using various radio access technologies (e.g., 4G communication technology, 5G communication technology, WiBro (wireless broadband) technology, wireless local area network (WLAN) Etc.). ≪ / RTI >

The base station may be connected to the core network via a wired backhaul or a wireless backhaul. For example, a base station can transmit data received from a terminal, control information, and the like to a core network through a wired backhaul or a wireless backhaul. The base station may also receive data, control information, etc. from the core network via a wired backhaul or wireless backhaul.

In a communication system, a base station can be divided into a digital unit (DU) and a radio unit (RU) according to a supporting function. Alternatively, the base station may be divided into a cloud digital unit (CDU) and a remote radio head (RRH). The DU (or CDU) may be connected to the RU (or RRH) via a transport network (e.g., an Xhaul network, a fronthaul network, a backhaul network, etc.). The transport network may include an Xhaul central unit (XCU) (or mXhaul), a hub, a terminal, and the like. Here, each of the hub and the terminal may be an Xhaul distributed unit (XDU).

Thus, the DU and RU (or CDU and RRH) divided according to the support function of the base station are using time division duplex (TDD) to transmit or receive frames through the base station. Such a time division scheme may mean a scheme in which a plurality of subframes included in a frame are divided into an uplink frame or a downlink frame.

Accordingly, the DU and the RU divided according to the supporting function of the base station need to clearly distinguish the time of a plurality of subframes for accurate frame transmission. To this end, the DU and the RU divided according to the support function of the base station must be time-synchronized accurately with each other. However, if the distance between the DU and the RU divided by the function of the base station becomes too far away, or the performance of the synchronization function decreases due to the deterioration of the DU and the RU, there is a problem that a collision occurs between the frames transmitted between the DU and the RU have.

It is an object of the present invention to provide a method of operating a communication node for controlling synchronization of an RU divided according to a supporting function of a base station in a communication network.

According to an aspect of the present invention, there is provided a method of operating a communication node in a communication network, the communication node being divided according to a function of a base station in a communication network, Generating a digital pulse signal based on high-speed clock synthesis for a time synchronization signal used for synchronous operation of a node, generating a digital pulse signal based on a pre-acquired notification setting value for controlling the synchronous operation of the communication node, Generating a pulse signal corresponding to the notification setting value based on a result of the counting and dividing the generated pulse signal according to a supporting function of the base station by performing an operation indicated by the generated pulse signal; And performing the function of the originating communication node.

Here, the time synchronization signal may be a 1 pulse per second (1 PPS) signal based on a GPS signal acquired through a global positioning system (GPS) module.

Here, the communication node may be a radio unit (RU) that transmits and receives signals through the RF antenna of the base station.

Herein, the base station may be a base station supporting the time division duplex (TDD) scheme.

The base station may be a micro base station supporting a small cell and a micro base station supporting a millimeter wave based micro cell.

Here, the notification setting value may be obtained in advance from the macro base station supporting the macro cell through the wireless communication module included in the communication node.

The generating of the pulse signal may generate the first time pulse signal according to the first target value when the count value reaches the first target value according to the notification setting value.

The generating of the pulse signal may generate a second time pulse signal according to the second target value when the count value reaches the second target value according to the notification setting value.

Here, the operation method of the communication node may further include initializing the value of the count when the value of the count reaches a period of 1 PPS.

Here, the method of operating the communication node includes: obtaining a control data value used to control a function performed in the communication node; and controlling a function performed in the communication node based on the obtained control data value As shown in FIG.

Here, the control data value may be obtained in advance from a macro base station supporting a macro cell through a wireless communication module included in the communication node.

According to another aspect of the present invention, there is provided a method of operating a communication node in a communication network, the communication node being divided according to a function of a TDD-based base station in a communication network, the communication node comprising: a processor; Wherein the at least one command generates a digital pulse signal based on high speed clock synthesis for a time synchronization signal used for synchronous operation of the communication node, Performs counting on the digital pulse signal based on a notification setting value previously obtained for controlling the synchronous operation of the communication node, generates a pulse signal corresponding to the notification setting value based on the result of counting By performing the operation indicated by the generated pulse signal, And is performed to perform the function of the communication node divided according to the support function of the base station.

Here, the time synchronization signal may be a 1 pulse per second (1 PPS) signal based on a GPS signal acquired through a global positioning system (GPS) module.

Here, the communication node may be a radio unit (RU) that transmits and receives signals through the RF antenna of the base station.

Here, the notification setting value may be obtained in advance from the macro base station supporting the macro cell through the wireless communication module included in the communication node.

The at least one command generates a first time pulse signal according to the first target value when the count value reaches the first target value according to the notification setting value in the course of generating the pulse signal .

The at least one command generates a second time pulse signal corresponding to the second target value when the count value reaches the second target value according to the notification setting value in the course of generating the pulse signal .

Here, the at least one instruction may be further executed to initialize the value of the count when the value of the count reaches a period of 1PPS.

Wherein the at least one command is further executed to obtain a control data value used to control a function performed at the communication node and to control a function performed at the communication node based on the obtained control data value .

Here, the control data value may be obtained in advance from a macro base station supporting a macro cell through a wireless communication module included in the communication node.

According to the present invention, the synchronization of a radio unit (RU) divided according to a support function of a base station in a communication network can be accurately controlled, so that the TDD scheme can be more efficiently applied.

In addition, the method of operating a communication node in a communication network according to the present invention includes receiving a control information for controlling the synchronization of an RU from a macro base station, thereby generating a micro base station supporting a millimeter wave based micro cell or a small base station supporting a small cell Can be operated more stably.

1 is a conceptual diagram illustrating a communication node divided according to a function of a base station in a communication network according to an embodiment of the present invention.
2 is a block diagram illustrating a communication node performing a method of operating a communication node in a communication network according to an embodiment of the present invention.
3 is a conceptual diagram illustrating a radio frame of a communication node in a communication network according to an embodiment of the present invention.
4 is a block diagram illustrating a method of operating a communication node in a communication network according to an embodiment of the present invention.
5 is a conceptual diagram showing a circuit used for frequency synthesis of a communication network according to an embodiment of the present invention.
6 is a flowchart illustrating a method of generating a pulse signal in a communication network according to an embodiment of the present invention.
7 is a block diagram illustrating a method of operating a communication node in a communication network in a communication network according to another embodiment of the present invention.
8 is a conceptual diagram showing an example in which a synchronous operation control method according to the present invention is applied to a communication network.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted in an ideal or overly formal sense unless explicitly defined in the present application Do not.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In order to facilitate the understanding of the present invention, the same reference numerals are used for the same constituent elements in the drawings and redundant explanations for the same constituent elements are omitted.

1 is a conceptual diagram illustrating a communication node divided according to a function of a base station in a communication network according to an embodiment of the present invention.

Referring to FIG. 1, in a communication network according to an exemplary embodiment of the present invention, a base station can be divided into a plurality of devices according to a function to be supported. Specifically, a base station in a communication network may be divided into a digital unit (DU) for processing data of a base station and a radio unit (RU) for transmitting and receiving a radio signal. Also, the DU and RU of the base station in the communication network can be physically separated and installed.

At this time, the DUs of the plurality of base stations included in the communication network can be concentratedly installed at predetermined locations. In addition, the RUs for the DUs of the plurality of base stations can be distributed and installed.

For example, the first RU 100-1 of the first base station included in the communication network, the second RU 100-2 of the second base station, and the n-th RU 100-n of the nth base station are mutually dispersed . In addition, the first DU 200-1 of the first base station, the second DU 200-2 of the second base station to the n DU 200-n of the nth base station concentrate on the predetermined location 200 Can be installed.

Thus, the communication between the DU and the RU divided according to the supporting function of the base station in the communication network is based on a communication interface such as a common public radio interface (CPRI), an open baseband remote radiohead interface (OBSAI), and an open radio interface Can be supported.

A communication node performing a method of operating a communication node in a communication network according to an embodiment of the present invention may mean an RU divided according to the function of the base station. Hereinafter, with reference to FIGS. 2 to 6, a specific method in which a method of operating a communication node in a communication network according to an embodiment of the present invention is performed can be described.

2 is a block diagram illustrating a communication node performing a method of operating a communication node in a communication network according to an embodiment of the present invention.

Referring to FIG. 2, a communication node 300 performing a method of operating a communication node in a communication network according to an embodiment of the present invention includes an RU 300 divided according to a supporting function of a base station in the communication network described with reference to FIG. 1, And DU.

In detail, a communication node 300 that performs a method of operating a communication node in a communication network of the present invention includes at least one processor 310, a memory 320, and a network interface device 330, . ≪ / RTI > The communication node 300 may further include an input interface device 340, an output interface device 350, a storage device 160, and the like. Each component included in the communication node 300 may be connected by a bus 370 to communicate with each other.

The processor 310 may execute a program command stored in the memory 320 and / or the storage device 360. The processor 310 may refer to a central processing unit (CPU), a graphics processing unit (GPU), or a dedicated processor on which the methods of the present invention are performed. The memory 320 and the storage device 360 may be composed of a volatile storage medium and / or a non-volatile storage medium. For example, memory 320 may be comprised of read only memory (ROM) and / or random access memory (RAM). Here, a program instruction executed through the processor 310 may include a plurality of steps for performing a method of operating a communication node in the communication network proposed by the present invention.

3 is a conceptual diagram illustrating a radio frame of a communication node in a communication network according to an embodiment of the present invention.

Referring to FIG. 3, a radio frame transmitted and received at a communication node performing a method of operating a communication node in a communication network according to an embodiment of the present invention may include 10 subframes. Specifically, the first radio frame may include 10 subframes (e.g., subframe # 0 to subframe # 9). In addition, the second radio frame may include 10 subframes (e.g., subframe # 1 to subframe # 9).

For example, the length of the radio frame may be 2ms, and the length of each of the plurality of subframes included in the radio frame may be 200s. In addition, the radio frame may include a downlink subframe, an uplink subframe, and a special subframe. Also, the radio frame may include a downlink subframe and an uplink subframe according to a preset ratio.

Specifically, the ratio of the downlink subframe (denoted by "D" in FIG. 3) and the uplink subframe (denoted by "U" in FIG. 3) of the first radio frame according to the first embodiment is "7: 3 ". In this case, the first radio frame may include a subframe # 0, a subframe # 1, a subframe # 5 to a subframe # 9 as a downlink subframe. Further, the first radio frame may include subframe # 2, subframe # 3, and subframe # 4 as chandelier link frames. Here, of the plurality of subframes included in the first radio frame, the subframe # 1 may be a special subframe.

The special subframe may include a downlink pilot time slot (DwPTS), a guard period (GP), and an uplink pilot time slot (UpPTS). The downlink pilot time slot can be regarded as a downlink interval and can be used for UE cell search, time and frequency synchronization acquisition, and so on. Here, the length of the downlink pilot time slot may be longer than the length of the uplink pilot time slot. Accordingly, in FIG. 3, the special subframe can be regarded as a downlink subframe. However, in Fig. 3, it is assumed that the special subframe is regarded as a downlink subframe, but it is not necessarily regarded as a downlink subframe.

Also, the guard interval included in the special subframe can be used for solving the interference problem of the uplink data transmission caused by the downlink data reception delay. In addition, the guard interval may include a time required for switching from the downlink data reception operation to the uplink data transmission operation. The uplink pilot time slot may be used for uplink channel estimation, time and frequency synchronization acquisition, and the like.

As described above, the lengths of the downlink pilot time slot, the guard interval, and the uplink pilot time slot included in the special subframe can be variably adjusted as needed. Also, the number and position of each of the downlink subframe, the uplink subframe, and the special subframe included in the radio frame may be changed as needed.

In addition, the second radio frame according to the first exemplary embodiment may include a DL subframe and an UL subframe according to a ratio equal to the ratio of the DL subframe and the UL subframe of the first radio frame. Here, among the plurality of subframes included in the second radio frame, the subframe # 1 may be a special subframe, and may be regarded as a downlink subframe.

Meanwhile, the ratio of the first radio frame to the DL subframe and the UL subframe according to the second embodiment may be "8: 2 ". In this case, the first radio frame may include a subframe # 0, a subframe # 1, a subframe # 4 to a subframe # 9 as a downlink subframe. Also, the first radio frame may include subframe # 2 and subframe # 3 as uplink subframes. Here, among the plurality of subframes included in the first radio frame, the subframe # 1 may be a special subframe and may be regarded as a downlink subframe.

In addition, the second radio frame according to the second embodiment may include a DL subframe and an UL subframe according to a ratio equal to the ratio of the DL subframe and the UL subframe of the first radio frame. Here, among the plurality of subframes included in the second radio frame, the subframe # 1 may be a special subframe, and may be regarded as a downlink subframe.

Meanwhile, the ratio of the first subframe and the uplink subframe of the first radio frame according to the third embodiment may be "9: 1 ". In this case, the first radio frame may include subframe # 0, subframe # 1, subframe # 3 to subframe # 9 as downlink subframes. Also, the first radio frame may include the subframe # 2 as the uplink subframe. Here, of the plurality of subframes included in the first radio frame, the subframe # 1 may be a special subframe.

In addition, the second radio frame according to the third exemplary embodiment may include a DL subframe and an UL subframe according to a ratio equal to a ratio of a downlink subframe and an uplink subframe of the first radio frame. Here, among the plurality of subframes included in the second radio frame, the subframe # 1 may be a special subframe.

Meanwhile, the ratio of the first radio frame to the downlink subframe and the uplink subframe according to the fourth embodiment may be "3: 2 ". In this case, the first radio frame may include subframe # 0, subframe # 1, subframe # 4, subframe # 5, subframe # 6 and subframe # 9 as downlink subframes. Also, the first radio frame may include subframe # 2, subframe # 3, subframe # 7, and subframe # 8 as uplink subframes. Here, among the plurality of subframes included in the first radio frame, the subframe # 1 and the subframe # 6 may be special subframes.

In addition, the second radio frame according to the fourth embodiment may include a DL subframe and an UL subframe according to a ratio equal to the ratio of the DL subframe and the UL subframe of the first radio frame. Here, among the plurality of subframes included in the second radio frame, the subframe # 1 and the subframe # 6 may be special subframes.

As described above, the frame transmitted and received by the communication node performing the method of operating the communication node in the communication network of the present invention may include a downlink subframe and an uplink subframe according to a preset ratio.

For this purpose, according to an operation method of a communication node in a communication network according to an embodiment of the present invention, in order to use a subframe as one subframe of an uplink subframe and a downlink subframe, Quot; value "can be set in advance. That is, the "notification setting value" can be set in advance for the use purpose of the subframe (e.g., one subframe of the uplink subframe and the downlink subframe). At this time, when the period of 1 second unit is newly started, the communication node can eliminate the accumulated error by initializing the counter.

In general, a synchronous equipment requiring synchronization in a communication network can use a time synchronization signal received from a GPS satellite. That is, in the communication network, the apparatus can extract 1PPS (1 Pulse Per Second), which is a time synchronization signal, based on the time synchronization signal received from the GPS satellite from the GPS satellite, a method for controlling the synchronization of the RUs divided according to the functions supported by the base station in the communication network according to the embodiment of the present invention will be described in detail below .

FIG. 4 is a block diagram illustrating a method of operating a communication node in a communication network according to an embodiment of the present invention. FIG. 5 is a conceptual diagram illustrating a circuit used in frequency synthesis in a communication network according to an embodiment of the present invention. to be.

Referring to FIG. 4, a communication node 400 performing a method of operating a communication node in a communication network according to an exemplary embodiment of the present invention may denote an RU divided according to a supporting function of a base station. That is, the communication node 400 may refer to the RU described with reference to FIG. 1, and may perform communication with the DU 200 divided according to the supporting function of the base station. Specifically, the communication node 400 includes an RF function unit 410, a first selection device 420, a second selection device 430 (hereinafter, referred to as " first selection device ") for performing a method of operating a communication node in a communication network according to an embodiment of the present invention. , A counter 440, a wired communication module 450, and a wireless communication module 460. [

The RF function unit 410 included in the communication node 400 may include a role of an RF antenna among the functions of the base station supported by the communication node 400 and may include an RF circuit ). In addition, the communication node 400 may transmit the radio signal received from the DU through the RF antenna or receive the radio signal from the outside through the RF antenna. In addition, the communication node 400 may switch the transmission mode of the RF antenna to transmit or receive a radio signal.

For example, the communication node 400, which is an RU divided according to a supporting function of a base station, can perform communication based on a divided time division duplex (TDD) scheme and a divided time division duplex (TDD) scheme. That is, the communication node may operate in one of the UL transmission mode and the UL transmission mode indicated by a plurality of subframes included in the frame.

In addition, the first selection device 420 included in the communication node 400 uses the Sync_Trig in FIG. 4, which is received by being directly connected to the DU, as the TDD_Sync signal, or when a digital signal is applied to the 1PPS signal received from the GPS module 500 The synthesized TTL signal can be used as the TDD_Sync signal. At this time, the "notification setting value" for the counter 440 may be applied to the TDD_Sync signal in association with the target time in advance. Through this, the communication node 400 can use the notification pulse related to the target time in advance.

Specifically, when the TDD_Sync signal is used based on the 1PPS signal of the GPS module 500, the communication node 400 may synthesize and use digital signals such as 10KHz and 10MHz based on the 1PPS signal. For example, the communication node 400 may use a frequency synthesizer including a phase locked loop (PLL) and a buffer as shown in FIG. That is, the communication node 400 can count the time from the point of time when the 1PPS signal is generated through the counter 440, use the pulse signal generated every 2 msec, or use the pulse signal generated every 200 msec. At this time, the time at which the pulse signal is generated can be counted in synchronization with the 1PPS signal of the GPS module, and the counter can be initialized at the start of the next PPS cycle. Accordingly, the communication node 400 can eliminate the accumulated error by using the counter initialized every PPS cycle.

(Or synchronizing) a specific time within one second through the method of generating the pulse signal described above. For this purpose, a count value indicating a target time in advance before a period of one PPS signal starts That is, "notification setting value") can be preset. On the other hand, the communication node 400 can preset the "operation set value " in the process of generating the pulse signal, and perform synchronization on the specific function operation based on the pulse signal generated according to the & can do. In addition, the communication node 400 can set in advance operation parameters other than the "notification set value " At this time, the synchronization signal may mean TRIG signal transmission indicating the activation timing of the "control data value" necessary for operation of the communication node 400. [

On the other hand, the second selection device 430 receives the "notification setting value" and the "control data value (i.e., the operation setting value of FIG. 4) for the synchronous operation control through the wired communication module 450 or the wireless communication module 460, "Can be obtained. For example, the wired communication module 450 may support wired Internet (wired network) based communication such as an Internet module. Also, the wireless communication module 460 may support wireless Internet (wireless network) based communication like the LTE module. For example, when the "notification setting value" and the "control data value" are obtained via the wireless communication module 460, the "notification setting value" and the "control data value" are acquired from the macro base station .

Thereafter, the second selection device 430 may forward the obtained "notification setting value " to the counter 440 before the TDD_Sync signal is generated. Through this, the counter 440 can apply the "notification setting value" to the 1PPS signal received from the GPS module 500 to perform counting. In addition, the second selector 430 may transmit the obtained "operation set value" to the RF function unit 410.

Hereinafter, an example of a concrete method of generating a pulse signal for a specific time based on the "notification setting value" in the operation method of the communication node in the communication network according to the embodiment of the present invention described above will be described with reference to FIG. .

6 is a flowchart illustrating a method of generating a pulse signal in a communication network according to an embodiment of the present invention.

Referring to FIG. 6, a communication node performing a method of generating a pulse signal in a communication network according to an embodiment of the present invention may refer to the communication node described with reference to FIG. 4, And may include a plurality of functional elements.

First, the communication node can receive the 1PPS signal from the GPS module (S501). Here, the GPS module may refer to the GPS module described with reference to FIG. Then, the communication node can perform high-speed clock synthesis based on the 1PPS signal received from the GPS module (S502). For example, the communication node can perform high-speed clock synthesis at 10 MHz based on 1 PPS.

Thereafter, the communication node can input a notification setting value to a counter operating as a high-speed clock (S503). Here, the notification setting value input to the counter can be obtained through the wired communication module or the wireless communication module described with reference to FIG. Thereafter, the communication node can initialize and initialize the count operation at the start of 1PPS of the counter (S504).

Thereafter, the communication node can perform the counting through the counter (S505). At this time, the counter can generate a pulse signal when the count value reaches a target corresponding to the notification setting value. Specifically, the counter can determine whether the count value reaches a first target corresponding to the notification setting value (S506). Thereafter, the counter can generate the first visual notification pulse signal when the count value reaches the first target corresponding to the notification setting value (S507). In this manner, when the first visual notification pulse signal is generated, the communication node can perform an operation corresponding to the first visual notification pulse signal and continuously perform the counting through the counter.

In addition, the counter may determine whether the count value reaches a second target corresponding to the notification setting value (S508). Thereafter, the counter can generate the second visual alert pulse signal when the count value reaches the second target corresponding to the notification setting value (S509). In this manner, when the second visual notification pulse signal is generated, the communication node can perform an operation corresponding to the second visual notification pulse signal and continuously perform the counting through the counter.

In addition, the counter may determine whether the count value reaches a third target corresponding to the notification setting value (S510). Thereafter, the counter may generate a third visual notification pulse signal if the count value reaches a third target corresponding to the notification setting value (S511). In this manner, when the third visual notification pulse signal is generated, the communication node performs an operation corresponding to the third visual notification pulse signal, and can continuously perform counting through the counter.

Thereafter, the communication node can determine whether a 1PPS cycle is newly started in the counter (S512). At this time, if the period of 1PP is not a new period, the communication node can continuously count through the counter. On the other hand, if the period of 1 PPS is the start of a new period, the communication node can initialize the count of 1 PPS.

7 is a block diagram illustrating a method of operating a communication node in a communication network in a communication network according to another embodiment of the present invention.

Referring to FIG. 7, a communication node 700 performing a method of operating a communication node in a communication network according to another embodiment of the present invention may be similar to the structure of the communication node described with reference to FIG. The communication node 700 may include an RF functional section 710, a first selection device 720, a second selection device 730, a counter 740 and a wireless communication module 750. A basic description of a plurality of functional elements included in the communication node 700 may be made by referring to a description of a plurality of functional elements included in the first communication node described with reference to FIG. However, the communication network according to another embodiment of the present invention shown in FIG. 7 may be a case where a signal based on a remote front hole (analog signal) is applied.

First, the "notification setting value" or the "control data value" in the communication network according to another embodiment of the present invention can be used as a setting value for the synchronous operation control. Specifically, the "notification setting value" or the "control data value" can be transmitted to a remote site through a direct signal line connection or an Internet / RS485 / RS422-based data communication. That is, the "notification setting value" or "control data value" may be transmitted to the wired Internet or the wireless Internet or may be transmitted via serial bus communication. Further, the "notification setting value" or "control data value" may be set or transmitted through a radio path using another mobile communication system in addition to the method described above.

8 is a conceptual diagram showing an example in which a synchronous operation control method according to the present invention is applied to a communication network.

Referring to FIG. 8, a macrocell-based communication network can support communication of a plurality of small cells (or cells of a microwave network of a millimeter wave band) based communication networks. For example, a plurality of small cells may form a small cell cluster, and a macro base station supporting macro cells may perform communication. In addition, a plurality of small cells included in the small cell cluster can support communication of the terminal. Also, the terminal may perform communication through a macro base station supporting a macro cell.

That is, the macro base station can manage the operation for the small cell base station supporting the small cell. At this time, there may occur an error in the macro base station or a situation in which the macro network can not be operated, and a problem that the "notification setting value" or "control data value" In this case, a method of using a part of the utilization period for the downlink transmission to secure the downlink path of the cell site (or the small cell) base station may be applied even in a situation where the RF operation control information set value is not transmitted. Generally, since the demand for downlink transmission in the communication network is higher than the demand for uplink transmission, the interval used for securing the downlink path can be variable considering this. At this time, the synchronization signal can use a signal received from a GPS module (for example, a GPS satellite) and a previously used "notification setting value ".

As shown in FIG. 8, an example in which the synchronous operation control method according to the present invention is applied can be considered. Specifically, the data values required for the setting using the macro network based wireless communication, such as the LTE network, can be transmitted, and the concept of controlling the small cell wireless communication device for the transmission can be applied.

That is, in the next generation mobile communication (for example, 5G communication system), the macro network can guarantee the stability of communication and survivability, and since the micro network firstly considers the high-speed communication function, The stability of the method of controlling the micro-network can be guaranteed to be more than a certain level. In this case, the communication network may be preliminarily set with a basic operation value for stabilizing the communication system or stopping the cell operation in preparation for the occurrence of an abnormality in the operation of the macro network.

The methods according to the present invention can 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, and the like, alone or in combination. The program instructions recorded on the computer readable medium may be those specially designed and constructed for the present invention or may be available to those skilled in the computer software.

Examples of computer readable media include hardware devices that are specially configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those generated by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate with at least one software module to perform the operations of the present invention, and vice versa.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims. It will be possible.

Claims (20)

CLAIMS What is claimed is: 1. A method of operating a communication node in accordance with a function of a base station in a communication network,
Generating a digital pulse signal based on high-speed clock synthesis for a time synchronization signal used for synchronous operation of the communication node;
Performing counting on the digital pulse signal based on a notification setting value acquired in advance to control the synchronous operation of the communication node;
Generating a pulse signal corresponding to the notification setting value based on a result of the counting; And
And performing a function of a communication node divided according to a supporting function of the base station by performing an operation indicated by the generated pulse signal. The method according to claim 1,
The time synchronizing signal includes:
And a 1 pulse per second (PPS) signal based on a GPS signal obtained through a global positioning system (GPS) module. The method according to claim 1,
The communication node,
And a radio unit (RU) for transmitting and receiving signals through the RF antenna of the base station. The method according to claim 1,
The base station comprises:
Wherein the base station supports the TDD (Time Division Duplex) scheme. The method according to claim 1,
The base station comprises:
A micro base station supporting a small base station supporting a small cell and a micro base station supporting a millimeter wave based micro cell. The method according to claim 1,
The notification setting value is set to "
Wherein the macro node is previously obtained from a macro base station supporting a macro cell through a wireless communication module included in the communication node. The method according to claim 1,
Wherein the step of generating the pulse signal comprises:
And generates a first time pulse signal according to the first target value when the value of the count reaches a first target value according to the notification setting value. The method of claim 7,
Wherein the step of generating the pulse signal comprises:
And generates a second time pulse signal according to the second target value when the value of the count reaches a second target value according to the notification setting value. The method according to claim 1,
The method comprising:
Further comprising the step of initializing the value of the count when the value of the count reaches a period of 1 PPS. The method according to claim 1,
The method comprising:
Obtaining a control data value used for controlling a function performed in the communication node; And
And controlling a function performed in the communication node based on the obtained control data value. The method of claim 10,
Wherein the control data value comprises:
Wherein the macro node is previously obtained from a macro base station supporting a macro cell through a wireless communication module included in the communication node. A communication node divided according to the TDD-based base station function support in a communication network,
A processor; And
Wherein at least one instruction executed through the processor includes a memory,
Wherein the at least one instruction comprises:
Generating a digital pulse signal based on high-speed clock synthesis for a time synchronization signal used for synchronous operation of the communication node;
Performing a count on the digital pulse signal based on a notification setting value previously obtained for controlling the synchronous operation of the communication node;
Generate a pulse signal corresponding to the notification setting value based on a result of the counting; And
And performing the function of the communication node divided according to the supporting function of the base station by performing the operation indicated by the generated pulse signal. The method of claim 12,
The time synchronizing signal includes:
Is a 1 pulse per second (PPS) signal based on a GPS signal acquired via a global positioning system (GPS) module. The method of claim 12,
The communication node,
And a radio unit (RU) for transmitting and receiving signals through the RF antenna of the base station. The method of claim 12,
The notification setting value is set to "
Wherein the communication node is obtained in advance from a macro base station supporting a macro cell through a wireless communication module included in the communication node. The method of claim 12,
Wherein the at least one instruction comprises:
And generating a first time pulse signal according to the first target value when the count value reaches the first target value according to the notification setting value in the course of generating the pulse signal. Node. 18. The method of claim 16,
Wherein the at least one instruction comprises:
And generating a second time pulse signal according to the second target value when the count value reaches the second target value according to the notification setting value in the course of generating the pulse signal. Node. The method of claim 12,
Wherein the at least one instruction comprises:
And to initialize the value of the count if the value of the count reaches a period of 1 PPS. The method of claim 12,
Wherein the at least one instruction comprises:
Obtaining a control data value used to control a function performed at the communication node; And
And to control a function performed at the communication node based on the obtained control data value. The method of claim 19,
Wherein the control data value comprises:
Wherein the communication node is obtained in advance from a macro base station supporting a macro cell through a wireless communication module included in the communication node.

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