KR20000061119A - Method for saving battery of mobile in wireless communication system - Google Patents

Method for saving battery of mobile in wireless communication system Download PDF

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Publication number
KR20000061119A
KR20000061119A KR1019990009937A KR19990009937A KR20000061119A KR 20000061119 A KR20000061119 A KR 20000061119A KR 1019990009937 A KR1019990009937 A KR 1019990009937A KR 19990009937 A KR19990009937 A KR 19990009937A KR 20000061119 A KR20000061119 A KR 20000061119A
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South Korea
Prior art keywords
terminal
call
power
wireless communication
communication system
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KR1019990009937A
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Korean (ko)
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박기업
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고정찬
주식회사 모리아테크놀로지
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Priority to KR1019990009937A priority Critical patent/KR20000061119A/en
Publication of KR20000061119A publication Critical patent/KR20000061119A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
    • H04W52/0254—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity detecting a user operation or a tactile contact or a motion of the device
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/143—Downlink power control
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE: A method for controlling a power of a terminal in a wireless communication system is provided for minimizing the consumption of a power of a terminal. CONSTITUTION: When a communication is not performed, a mobile terminal maintains a standby mode for thereby minimizing the consumption of a power. In this state, a base station transmits a preamble signal including an identification code to the terminal. The terminal continuously receives the above signals and compares with his identification code. In this state, a call is achieved by inputting a telephone number and a send button so that a subscriber wants to call another subscriber or a certain person.

Description

무선통신 시스템에서 단말기의 전력제어 방법 {METHOD FOR SAVING BATTERY OF MOBILE IN WIRELESS COMMUNICATION SYSTEM}Power control method of terminal in wireless communication system {METHOD FOR SAVING BATTERY OF MOBILE IN WIRELESS COMMUNICATION SYSTEM}

본 발명은 무선통신 시스템(WIRELESS COMMUNICATION SYSTEM)에서 단말기(MOBILE UNIT)의 전력을 제어하는 방법에 관한 것으로서, 좀더 상세하게는 무선 단말기가 휴면모드(STANDBY MODE)를 수행하여 사용하지 않는 동안에는 단말기(MOBILE UNIT)의 위치파악을 수행하지 않고 있다가 단말기에서 통화신호가 송신되는 경우, 바로 휴면모드에서 동작모드(ACTIVE MODE)로 변환하고 파일럿채널과 동조시도하여 통화가 가능하도록 함으로서 단말기의 전력소비를 최소화하는 방법에 관한 것이다.The present invention relates to a method of controlling the power of a mobile unit in a wireless communication system, and more particularly, a mobile terminal while the mobile terminal does not use a standby mode (STANDBY MODE). Minimize the power consumption of the terminal by converting from the dormant mode to the active mode and attempting to synchronize with the pilot channel when the call signal is transmitted from the terminal without performing the location detection of the unit. It is about how to.

일반적으로 단말기의 전송전력을 매우 낮게 하는 이유중의 하나는 단말기의 에너지소비를 줄이는 것이지만, 너무 낮은 전력의 신호를 전송할 수는 없다. 왜냐하면, 신호가 수신기에서 해독되지 않기 때문이다. 그리고 너무 낮은 신호를 수신하면 단말기와 기지국사이에서 설정된 접속이 파기된다.In general, one of the reasons for the very low transmission power of the terminal is to reduce the energy consumption of the terminal, but can not transmit a signal of too low power. This is because the signal is not decoded at the receiver. If too low a signal is received, the established connection between the terminal and the base station is discarded.

따라서, 기지국은 단말기에서 송신하는 트래픽 채널의 신호전력대 잡음비(즉, Eb/No)를 토대로 역방향링크 전력제어 명령비트를 결정하고, 단말기은 기지국으로부터 수신하는 이 명령비트를 이용하여 전력 증폭기의 송신전력을 조절한다. 이에 역방향 링크전력 제어시 단말기의 송신전력을 전력 증폭기에서 증감시킴으로서 신호정보와 트래픽 정보의 중요성과 무관하게 일률적으로 송신전력을 제어하지 않고, 전력제어 기준값(Ec/It)을 비교하여 단말기의 송신전력을 증감하는 방법이 대한민국 공개특허공보 98-46879에 개시되었다.Accordingly, the base station determines the reverse link power control command bit based on the signal power to noise ratio (ie, Eb / No) of the traffic channel transmitted from the terminal, and the terminal uses the command bit received from the base station to transmit power of the power amplifier. Adjust Accordingly, when controlling the reverse link power, the transmit power of the terminal is increased or decreased by the power amplifier, so that the transmit power of the terminal is compared by comparing the power control reference value (Ec / It) without controlling the transmit power uniformly regardless of the importance of signal information and traffic information. Method for increasing or decreasing the amount is disclosed in Korean Laid-Open Patent Publication 98-46879.

그러나 이러한 모든 방법은 단말기의 전력소비를 줄이고자 고안된 방법들이다. 이 방법에 의해 사용되는 모든 시스템은 가입자가 이동전화 단말기를 작동시키면 단말기는 자동적으로 수신상태가 되어 333개 채널(운용 대역폭이 10MHz의 경우) 중에서 신호채널로서 지정된 21개의 설정채널(Set-up Channel)을 차례로 탐색(Scan)한다. 이때 21개의 설정채널 중 가장 전파세력이 큰 채널을 선택하여 그 채널주파수에 동조한다. 주변에 있는 기지국에는 모두 다른 설정채널이 할당되어 있기 때문에 가장 강한 설정채널에 동조(Synchronous)시켜 고정된다는 것은 단말기가 가장 가까운 기지국을 선택하는 것을 의미한다.However, all these methods are designed to reduce the power consumption of the terminal. All the systems used by this method have 21 set-up channels designated as signal channels among the 333 channels (if the operating bandwidth is 10 MHz) when the subscriber operates the mobile terminal. Scan) in order. At this time, select the channel with the greatest propagation force among 21 setting channels and tune to the channel frequency. Since all of the neighboring base stations are assigned different setting channels, synchronous and fixed to the strongest setting channel means that the terminal selects the nearest base station.

이러한 상태는 통화중은 아니지만 언제라도 자기를 호출하면 응답할 수 있는 상태인 동시에 가입자가 통화를 하려고 할 때 곧바로 신호를 전송할 수 있는 준비를 갖춘 상태이며, 가입자 의도와는 상관없이 자동적으로 단말기의 통화준비가 완료되어 있는 상태이다.This state is not in a call but can answer any time by calling itself and is ready to send a signal immediately when a subscriber wants to make a call. It is ready.

따라서, 상기와 같은 상태가 계속된다면 통화를 하지 않는 상태에도 불구하고 계속적으로 단말기의 전력을 소모하는 문제점이 있다. 또한 종래의 시스템에서는 자동위치등록(Autonomous Location Registration: AR)을 수행하는 경우에는 그 전력소모가 훨씬 더 많아지기 때문에 단말기의 충전지 교체시기가 더욱 짧아지는 불편한 점을 내포하고 있다.Therefore, if the above state continues, there is a problem of continuously consuming the power of the terminal despite the non-call state. In addition, in the conventional system, when the automatic location registration (AR) is performed, the power consumption becomes much higher, and thus the inconvenience of shortening the replacement time of the rechargeable battery of the terminal is included.

본 발명은 상기한 바와 같이 동작되는 종래 기술의 문제점을 해결하기 위하여 창안된 것으로서, 주 목적은 통화를 하지않는 시간동안에는 단말기의 주파수동조를 수행하기 않고, 가입자의 통화수단으로 인하여 통화가 필요한 경우에만 파일럿채널을 동조시도하고 통화를 이룸으로서 단말기의 전력소비를 최소화시키고 단말기의 사용시간을 극대화 하는 방법을 제공하는데 있다.The present invention has been made in order to solve the problems of the prior art operating as described above, the main object is not to perform the frequency tuning of the terminal during the non-call time, only when a call is required due to the subscriber's call means The present invention provides a method of minimizing the power consumption of the terminal and maximizing the use time of the terminal by tuning the pilot channel and making a call.

도 1은 본 발명의 바람직한 실시예에 의한 통화신호가 송신되는 경우의1 illustrates a case where a call signal is transmitted according to a preferred embodiment of the present invention.

단말기의 전력제어 방법을 나타내는 흐름도,A flowchart showing a power control method of a terminal;

도 2는 본 발명에 적용되는 프로토콜(PROTOCOL)의 채널구성도.2 is a channel configuration diagram of a protocol (PROTOCOL) applied to the present invention.

상기한 목적을 달성하기 위해 본 발명을 첨부 도면에 의거하여 좀더 상세히 설명하면 더욱 명백해질 것이다.BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be more apparent from the following detailed description based on the accompanying drawings in order to achieve the above object.

본 발명의 바람직한 실시예에 의한 무선통신 시스템에서 단말기의 전력제어 방법은 이동 단말기(MOBILE UNIT)가 휴면모드(STANDBY MODE)상태에서 최소한의 전력을 이용하여 프리엠블(PREAMBLE) 신호를 계속적으로 탐색하는 제1단계, 가입자의 통화수단에 의해 상기 휴면모드에서 활성모드로 전환되는 제2단계 및 상기 활성화된 단말기가 기지국(BASE STATION)과 파일럿채널을 동조시도하여 일반적인 절차에 따라 순방향채널을 수신하는 제3단계가 순차적으로 수행하도록 구성된다.In a wireless communication system according to a preferred embodiment of the present invention, a method for controlling power of a terminal continuously searches for a preamble signal using a minimum power in a mobile terminal (STANDBY MODE) state. In the first step, the second step of switching from the dormant mode to the active mode by the subscriber's call means; and the activated terminal attempts to tune the pilot channel to the base station and receives the forward channel according to a general procedure. Three steps are configured to perform sequentially.

또한 상기 프리엠블 신호는 파일럿채널의 앞단에 위치되어 비통화시에는 파일럿채널의 탐색을 수행하지 않는 것이 바람직하며, 상기 단말기는 통화가 끝나면 자동으로 휴면모드로 전환되는 것이 바람직하다.In addition, the preamble signal is located at the front end of the pilot channel, it is preferable not to search the pilot channel during the non-call, the terminal is preferably switched to the sleep mode automatically after the call.

본 발명은 다양하게 변형될 수 있고 여러 가지 형태를 취할 수 있으며 하기 발명의 상세한 설명에서는 그에 따른 특별한 실시예에 대해서만 기술하였다. 하지만 본 발명은 다음의 상세한 설명에서 언급되는 특별한 형태로 한정되는 것이 아닌 것으로 이해되어야 하며, 오히려 첨부된 청구범위에 의해 정의되는 본 발명의 정신과 범위 내에 있는 모든 변형물과 균등물 및 대체물을 포함하는 것으로 이해되어야 한다.The invention can be variously modified and can take various forms and only the specific examples thereof are described in the following detailed description of the invention. It is to be understood, however, that the present invention is not limited to the specific forms referred to in the following description, but rather includes all modifications, equivalents, and substitutions within the spirit and scope of the invention as defined by the appended claims. It should be understood that.

상기와 같이 구성된 본 발명의 작용을 설명하면 다음과 같다.Referring to the operation of the present invention configured as described above are as follows.

도 1은 호출신호를 송신할 때 단말기의 전력제어를 위한 호제어 방법을 나타내는 흐름도이다.1 is a flowchart illustrating a call control method for power control of a terminal when transmitting a call signal.

본 발명은 무선이동통신(WIRELESS COMMUNICATION SYSTEM)에 적용이 가능하며, 그 실시구성은 그 적용에 있어 다소 변경될 수 있지만, 그 주된 기술사상에는 변함이 없다.The present invention can be applied to the wireless communication system (WIRELESS COMMUNICATION SYSTEM), the embodiment configuration may be changed somewhat in the application, but the main technical idea does not change.

우선, 통화를 수행하지 않는 단말기(MOBILE UNIT)는 휴면모드(STANDBY MODE)상태를 유지함으로서 단말기의 전력소모를 최소화한다. 이러한 상태는 기지국(BASE STATION)이 단말기로 식별코드(IDENTIFICATION CODE)를 포함 프리엠블(PREAMBLE) 신호를 전송하며, 단말기는 이러한 신호를 계속적으로 수신하면서 자신의 식별코드와 비교하게 된다. 이러한 프리엠블 신호를 포함한 신호의 프로토콜 구성을 도2에 나타내었다.First, a mobile unit that does not perform a call minimizes power consumption of the terminal by maintaining a sleep mode. In this state, the base station transmits a preamble signal including an identification code to the terminal, and the terminal continuously receives the signal and compares it with its identification code. The protocol configuration of a signal including such a preamble signal is shown in FIG.

이러한 상태를 유지하다가 가입자의 통화의 필요에 의해 타가입자나 다른 일반인에게 통화를 하기 위하여 전화번호를 입력하고 통화버튼(SEND BUTTON)을 눌러 호를 연결시도한다.While maintaining this state, in order to make a call to other subscribers or other members of the general public, the telephone number is entered and a call button is pressed to send a call.

상기의 통화시도가 일정시간 동안 소정의 횟수 만큼 이루어진다. 이러한 시도 후에도 통화가 않되면, 통화불능상태로 인식되어 수신불능상태를 가입자에게 알려준다.The call attempt is made a predetermined number of times for a predetermined time. If there is no call after such an attempt, it is recognized as the incapable state and informs the subscriber of the inability to receive.

이러한 호의 연결시도와 동시에 상기 단말기는 휴면모드에서 활성모드(ACTIVE MODE)로 변환되고, 호연결을 위해 파일럿채널(PILOT CHANNEL)을 탐색하여 강한 채널과 동조(SYNCHRONIZATION)를 이룬후 통화를 시도하여 가입자의 전화번호(CALLING NUMBER)와 통화하고자 하는 전화번호(CALLED NUMBER) 및 가입자에 대한 정보가 기지국(BASE STATION)으로 전송하게 된다.At the same time as the connection attempt of the call, the mobile station is converted from the sleep mode to the active mode, and the pilot channel is searched for the call connection, and after establishing a strong channel (SYNCHRONIZATION), the subscriber tries to make a call. CALLING NUMBER and CALLLED NUMBER and subscriber information to be transmitted to the base station.

그리고 호출신호를 수신하는 단말기는 통화가 끝나면 자동으로 휴면모드로 전환되어 계속적으로 단말기의 전력을 최소화한다.And the terminal receiving the call signal is automatically switched to the sleep mode after the call is continuously minimized the power of the terminal.

이와 같은 본 발명에 의하면 단말기가 호의 연결에 관계없이 파일럿채널과 동조함으로서 불필요한 전력을 소모하지 않고, 가입자가 호의 연결을 시도한 경우에만 활성화됨으로서 단말기의 전력소모를 최소화시키기고, 따라서 단말기 사용시간의 극대화를 제공하는 매우 유익한 발명임이 명백하다.According to the present invention, the terminal synchronizes with the pilot channel irrespective of the call connection and consumes no unnecessary power, and is activated only when the subscriber attempts to connect the call, thereby minimizing the power consumption of the terminal, thus maximizing the terminal usage time. It is obvious that this is a very advantageous invention.

Claims (4)

이동 단말기(MOBILE UNIT)가 휴면모드(STANDBY MODE)상태에서 최소한의 전력을 이용하여 프리엠블(PREAMBLE) 신호를 계속적으로 탐색하는 제1단계;A first step of a mobile terminal continuously searching for a preamble signal using minimal power in a sleep mode; 가입자의 통화수단에 의해 상기 휴면모드에서 활성모드로 전환되는 제2단계; 및A second step of switching from the sleep mode to the active mode by a subscriber's calling means; And 상기 활성화된 단말기가 기지국(BASE STATION)과 파일럿채널을 동조시도하여 일반적인 절차에 따라 순방향채널을 수신하는 제3단계가 순차적으로 수행하는 것을 특징으로 하는 무선통신 시스템에서 단말기의 전력제어 방법.And a third step of receiving a forward channel in accordance with a general procedure by sequentially activating a pilot channel with a base station and performing a pilot channel. 청구항 1 에 있어서,The method according to claim 1, 상기 프리엠블 신호는 파일럿채널의 앞단에 위치되어 비통화시에는 파일럿채널의 탐색을 수행하지 않는 것을 특징으로 하는 무선통신 시스템에서 단말기의 전력제어 방법.The preamble signal is located at the front end of the pilot channel, the power control method of the terminal in the wireless communication system, characterized in that does not perform the search for the pilot channel. 청구항 1 에 있어서,The method according to claim 1, 상기 통화수단은 가입자가 통화를 시도하기 위하여 단말기의 통화버튼(SEND BUTTON)의 온동작인 것을 특징으로 하는 무선통신 시스템에서 단말기의 전력제어 방법.The communication means is a power control method of a terminal in a wireless communication system, characterized in that the subscriber to try to make a call on the call button (SEND BUTTON) of the terminal. 청구항 1 에 있어서,The method according to claim 1, 상기 단말기는 통화가 끝나면 자동으로 휴면모드로 전환되는 것을 특징으로 하는 무선통신 시스템에서 단말기의 전력제어 방법.The terminal is a power control method of a terminal in a wireless communication system, characterized in that automatically switched to sleep mode after the call.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070073059A (en) * 2006-01-03 2007-07-10 삼성전자주식회사 Method and apparatus for power controlling of terminal in mobile communication system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070073059A (en) * 2006-01-03 2007-07-10 삼성전자주식회사 Method and apparatus for power controlling of terminal in mobile communication system

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