KR100228018B1 - Method controlling call congestion in base station - Google Patents
Method controlling call congestion in base station Download PDFInfo
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- KR100228018B1 KR100228018B1 KR1019960062623A KR19960062623A KR100228018B1 KR 100228018 B1 KR100228018 B1 KR 100228018B1 KR 1019960062623 A KR1019960062623 A KR 1019960062623A KR 19960062623 A KR19960062623 A KR 19960062623A KR 100228018 B1 KR100228018 B1 KR 100228018B1
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- Prior art keywords
- terminal
- base station
- call congestion
- congestion control
- call
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/08—Load balancing or load distribution
- H04W28/09—Management thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
- H04W16/06—Hybrid resource partitioning, e.g. channel borrowing
- H04W16/08—Load shedding arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0284—Traffic management, e.g. flow control or congestion control detecting congestion or overload during communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/52—Allocation or scheduling criteria for wireless resources based on load
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
Abstract
1. 청구 범위에 기재된 발명이 속한 기술분야1. TECHNICAL FIELD OF THE INVENTION
본 발명은 무선통신 기지국에서의 호 폭주 제어 방법에 관한 것임.The present invention relates to a call congestion control method in a wireless communication base station.
2. 발명이 해결하려고 하는 기술적 과제2. The technical problem to be solved by the invention
본 발명은, 호 폭주시 기지국별로 단말기의 접속레벨을 조정하므로써 신호의 세기가 강한 단말기에 우선적으로 무선채널을 할당하고 신호의 세기가 약한 단말기에 대해서는 무선채널의 할당을 거부하는 호 폭주 제어 방법을 제공하고자 함.The present invention provides a call congestion control method in which a radio channel is preferentially allocated to a terminal having a high signal strength by denying the connection level of a terminal for each base station during call congestion, and the radio channel is rejected to a terminal having a weak signal strength. To provide.
3. 발명의 해결방법의 요지3. Summary of Solution to Invention
본 발명은, 호 폭주 상태가 발생하면 잠재적 간섭정도를 이용한 호 폭주 제어 알고리즘을 수행시키는 제 1 단계; 각 기지국별로 부하상태를 분석한 후에 그 분석 결과에 따라 각 기지국별로 단말기 접속레벨을 조정하는 제 2 단계; 및 단말기의 셋업채널신호 세기와 상기 제 2 단계에서 조정한 단말기 접속레벨을 비교하여 그 비교 결과에 따라 무선채널을 할당하는 제 3 단계를 포함한다.The present invention includes a first step of performing a call congestion control algorithm using a potential degree of interference when a call congestion condition occurs; A second step of analyzing a load state for each base station and adjusting a terminal access level for each base station according to the analysis result; And a third step of comparing the setup channel signal strength of the terminal with the terminal access level adjusted in the second step and allocating a wireless channel according to the comparison result.
4. 발명의 중요한 용도4. Important uses of the invention
본 발명은 무선통신망에서의 호 폭주 제어에 이용됨.The present invention is used for call congestion control in a wireless communication network.
Description
본 발명은 무선통신망에서 호 폭주가 발생하였을 경우에 기지국에서의 잠재적 간섭정도를 우선순위에 이용하여 호 폭주를 제어하는 호 폭주 제어 방법에 관한 것이다.The present invention relates to a call congestion control method for controlling call congestion by using a potential degree of interference at a base station when a call congestion occurs in a wireless communication network.
종래의 호 폭주 제어 방법은 일반적으로 교환기에서만 수행되었다. 그러나, 이러한 방법은 다음과 같은 문제점을 가지고 있었다.Conventional call congestion control methods have generally been performed only at exchanges. However, this method had the following problems.
첫째, 호 설정 여부를 결정하는 시기가 무선통신에서의 가장 중요한 자원인 무선채널 및 기타 통신선로가 이미 점유된 후이기 때문에 통신자원이 불필요하게 낭비되고 있었다.First, since the time for determining whether to set up a call is already occupied by radio channels and other communication lines, which are the most important resources in wireless communication, communication resources were wasted unnecessarily.
둘째, 통화품질과 무관하게 임의의 호에 선택한 후에, 선택된 호에 대하여 호 설정을 거부하는 방법을 사용하므로써 서비스의 질이 떨어지는 단점이 있었다.Second, after selecting a random call irrespective of the call quality, there is a disadvantage in that the quality of service is deteriorated by using a method of rejecting a call setup for the selected call.
상기 문제점을 해결하기 위하여 안출된 본 발명은, 호 폭주시 기지국별로 단말기의 접속레벨을 조정하므로써 신호의 세기가 강한 단말기에 우선적으로 무선채널을 할당하고 신호의 세기가 약한 단말기에 대해서는 무선채널의 할당을 거부하는 호 폭주 제어 방법을 제공하는데 그 목적이 있다.In order to solve the above problems, the present invention, by adjusting the connection level of the terminal for each base station during call congestion, the radio channel is preferentially allocated to the terminal with the strong signal and the radio channel is allocated to the terminal with the weak signal. The purpose of the present invention is to provide a call congestion control method for rejecting the call.
도 1 은 본 발명이 적용되는 무선통신 시스템의 구성예시도.1 is an exemplary configuration diagram of a wireless communication system to which the present invention is applied.
도 2 는 본 발명에 따른 호 폭주 제어 방법에 대한 일실시예 흐름도.2 is a flowchart of an embodiment of a call congestion control method according to the present invention;
* 도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings
11 : 교환기 12,16 : 기지국11 switchboard 12,16 base station
13,14,15,17 : 단말기13,14,15,17: terminal
상기 목적을 달성하기 위하여 본 발명은, 무선통신 기지국에 적용되는 호 폭주 제어 방법에 있어서, 호 폭주 상태가 발생하면 잠재적 간섭정도를 이용한 호 폭주 제어 알고리즘을 수행시키는 제 1 단계; 각 기지국별로 부하상태를 분석한 후에 그 분석 결과에 따라 각 기지국별로 단말기 접속레벨을 조정하는 제 2 단계; 및 단말기의 셋업채널신호 세기와 상기 제 2 단계에서 조정한 단말기 접속레벨을 비교하여 그 비교 결과에 따라 무선채널을 할당하는 제 3 단계를 포함하여 이루어진 것을 특징으로 한다.In order to achieve the above object, the present invention provides a call congestion control method applied to a wireless communication base station, comprising: a first step of performing a call congestion control algorithm using a potential degree of interference when a call congestion condition occurs; A second step of analyzing a load state for each base station and adjusting a terminal access level for each base station according to the analysis result; And a third step of comparing a setup channel signal strength of the terminal with the terminal access level adjusted in the second step and allocating a wireless channel according to the comparison result.
이하, 첨부된 도면을 참조하여 본 발명에 따른 일실시예를 상세히 설명한다.Hereinafter, with reference to the accompanying drawings will be described an embodiment according to the present invention;
도 1 은 본 발명이 적용되는 무선통신 시스템의 구성예시도로서, 도면에서 "11"은 교환기, "12,16"은 기지국, "13,14,15,17"은 단말기를 각각 나타낸다.1 is an exemplary configuration diagram of a wireless communication system to which the present invention is applied. In the drawings, "11" represents a switch, "12,16" represents a base station, and "13, 14, 15, 17" represents a terminal, respectively.
교환기 A(11), 기지국 A(12) 또는 기지국 B(16)가 호폭주 상태에 있을 경우에 잠재적 간섭정도를 이용한 호 폭주 제어 알고리즘을 수행시킨다. 호 폭주 제어 알고리즘은 단말기의 신호 세기가 강한 단말기, 즉 잠재적 간섭정도가 상대적으로 낮은 단말기에 우선적으로 무선채널을 할당하고, 단말기의 신호 세기가 약한 단말기, 즉 잠재적 간섭정도가 상대적으로 높은 단말기에 대해서는 무선채널의 할당을 거부한다. 이를 위하여 각 기지국의 부하상태를 분석하고 각 기지국별로 단말기 접속레벨을 조정한다.When the switch A 11, the base station A 12, or the base station B 16 is in the congestion state, the call congestion control algorithm using the potential interference level is performed. The call congestion control algorithm preferentially allocates a radio channel to a terminal having a strong signal strength, that is, a terminal having a relatively low level of interference, and for a terminal having a low signal strength, that is, a terminal having a relatively high level of interference. Deny allocation of radio channel. To this end, the load status of each base station is analyzed and the terminal access level is adjusted for each base station.
도면에서 점선 영역(19,21)이 호 폭주 상태가 발생하기 전의 호 접속이 가능한 범위이고, 호 폭주가 발생하였을 경우에는 단말기 접속레벨을 상향 조정하여 호 접속이 가능한 범위를 실선 영역(18,20)으로 축소한다. 이때, 셋업채널신호의 세기가 상대적으로 강한 단말기 a(13)와 단말기 d(17)는 호 접속이 가능하지만 셋업채널신호의 세기가 상대적으로 약하여 간섭이 발생될 소지가 있는 단말기 b(14)와 단말기 c(15)는 호 접속이 거부되어진다.In the drawing, the dotted line areas 19 and 21 are the ranges where call connection is possible before the call congestion condition occurs. When the call congestion occurs, the area where the call connection is possible by adjusting the terminal connection level is increased. Zoom out to). At this time, the terminal a (13) and the terminal d (17) having a relatively strong strength of the setup channel signal can be connected to the call, but the strength of the setup channel signal is relatively weak with the terminal b (14) that may cause interference Terminal c (15) is denied call connection.
결국, 단말기 a, b, c, d(13,14,15,17)중 잠재적 간섭정도가 적은 단말기 a(13)와 단말기 d(17)에 대하여 호 접속을 허락하므로써 임의적으로 호를 선택한 후에 호 접속을 거부하는 것보다 통화품질의 향상을 기대할 수 있다.As a result, after a call is arbitrarily selected by allowing a call connection to the terminal a (13) and the terminal d (17) having a low potential interference degree among the terminals a, b, c, and d (13, 14, 15, 17). Rather than denying access, you can expect better call quality.
도 2 는 본 발명에 따른 호 폭주 제어 방법에 대한 일실시예 흐름도이다.2 is a flowchart illustrating an exemplary call congestion control method according to the present invention.
교환기 A(11), 기지국 A(12), 기지국 B(16) 또는 무선통신로상에서 호 폭주 상태가 발생하면(31), 잠재적 간섭정도를 이용한 호 폭주 제어 알고리즘을 수행시킨다(32). 이후, 각 기지국별로 부하상태를 분석한 후에(33) 각 기지국별로 단말기 접속레벨을 조정한다(34).When a call congestion condition occurs on the switch A 11, the base station A 12, the base station B 16, or the wireless communication path (31), the call congestion control algorithm using the potential interference degree is performed (32). Thereafter, after analyzing the load state for each base station (33), the terminal access level is adjusted for each base station (34).
이에 따라, 단말기의 셋업채널신호 세기가 강한 단말기, 즉 잠재적 간섭정도가 상대적으로 낮은 단말기에 우선적으로 무선채널을 할당하고, 단말기의 셋업채널신호 세기가 약한 단말기, 즉 잠재적 간섭정도가 상대적으로 높은 단말기에 대해서는 무선채널의 할당을 거부한다(35).Accordingly, a radio channel is preferentially allocated to a terminal having a strong setup channel signal strength of the terminal, that is, a terminal having a relatively low potential interference level, and a terminal having a weak setup channel signal strength of the terminal, that is, a terminal having a relatively high potential interference level. Refuse the allocation of the radio channel for (35).
이상에서 설명한 본 발명은, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 있어 본 발명의 기술적 사상을 벗어나지 않는 범위내에서 여러 가지 치환, 변형 및 변경이 가능하므로 전술한 실시예 및 첨부된 도면에 한정되는 것이 아니다.The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains, and the above-described embodiments and accompanying It is not limited to the drawing.
상기와 같은 본 발명은, 호폭주시 단말기 접속레벨을 높이므로써, 단말기의 셋업채널신호 세기가 강한 단말기, 즉 잠재적 간섭정도가 상대적으로 낮은 단말기에 우선적으로 무선채널을 할당하여 서비스되는 호에 대해서 양질의 통화품질을 제공하고, 단말기의 셋업채널신호 세기가 약한 단말기, 즉 잠재적 간섭정도가 상대적으로 높은 단말기에 대해서는 무선채널의 할당을 거부하여 서비스되지 못하는 호에 대한 통신자원의 불필요한 낭비를 방지할 수 있는 효과가 있다.As described above, the present invention improves the terminal connection level during the busy period, thereby providing a high quality service for a call serviced by preferentially allocating a radio channel to a terminal having a strong setup channel signal strength, that is, a terminal having a relatively low level of potential interference. It provides call quality and prevents unnecessary waste of communication resources for calls that are not serviced by rejecting allocation of radio channel to terminals with weak setup channel signal strength. It has an effect.
또한, 본 발명은 소프트웨어적인 알고리즘에 의해서 쉽게 적용가능하고, 호가 진행중인 단말기에 대해서는 계속적인 통화를 보장하므로서, 서비스 품질을 보장할 수 있다.In addition, the present invention can be easily applied by a software algorithm, and can guarantee a quality of service while ensuring a continuous call for a terminal in which a call is in progress.
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| KR1019960062623A KR100228018B1 (en) | 1996-12-06 | 1996-12-06 | Method controlling call congestion in base station |
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| KR1019960062623A KR100228018B1 (en) | 1996-12-06 | 1996-12-06 | Method controlling call congestion in base station |
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| KR930703799A (en) * | 1991-01-07 | 1993-11-30 | 죤 에이취. 무어 | Method and apparatus for distribution of communication channel load in cellular wireless communication system |
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| KR930703799A (en) * | 1991-01-07 | 1993-11-30 | 죤 에이취. 무어 | Method and apparatus for distribution of communication channel load in cellular wireless communication system |
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