CN1090438C - 在个人通信服务系统中手动切断的方法 - Google Patents
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Abstract
一种在数字个人通信服务(PCS)系统中减少于越区切换时呼叫断线可能性的越区切换方法。该方法是通过使用进程间通信(IPC)将基站控制器彼此联接而在网关互连网络(GCIN)之间形成链路;分配用于分辨所述GCIN的高容量IPC节点交换台系统地址,以由GCIN之间的进程间通信来执行越区切换来实现;通过使用HINA地址和GCIN之间的链路,根据越区切换请求,越区切换呼叫;根据接收信号强度指示(RSSI)信号的强弱,移动台控制器将移动台切换到具有较强RSSI信号的区域上,随后,切断对RSSI较弱信号的区域的呼叫。
Description
技术领域
本发明涉及移动无线通信系统,具体讲,涉及采用码分多路存取(CDMA)系统的数字个人通信服务(PCS)系统中越区切换的方法。
背景技术
图1示出在根据已有技术的数字PCS系统中硬越区切换的方法。如图1所示,在传统的数字PCS系统中,由于具有多个网关互连网络的系统并没有在GCIN之间形成的链路,因此不能实现进程间通信(IPC)。因此通过移动交换中心(MSC)之间使用与MCS互锁的硬越区切换链路P1来实现GCIN之间或局域通信互联网络(LCIN)之间的越区切换。由于硬越区切换是经过许多步骤的,因此越区切换算法会使硬越区切换链路具有很高的呼叫断线可能性。准确地说,呼叫断线(对于100毫秒以上的情况)的可能性高达50%。
这一问题的主要原因是由采用中断再连接越区切换的MCS之间的硬越区切换引起的。中断再连接越区切换是将处理之中的呼叫切断100毫秒以上,并搜索在新的蜂窝单元边界上具有强RSSI(接收信号强度指示)的移动站的BTS(基站接收系统)。因而,传统的硬越区切换方法会有较高的呼叫断线的可能性。
发明内容
本发明的目的在于提供一种在数字PCS系统中在越区切换期间减少呼叫断线可能性的越区切换方法。
根据本发明的一个方面,提供一种连接再中断软越区切换的方法。该方法包括:通过使用进程间通信(IPC)将基站控制器(BSC)彼此联接而在网关互连网络(GCIN)之间形成链路,分配用于分辨GCIN的高容量IPC节点交换台系统(HINA)地址,以由GCIN之间的进程间通信来执行越区切换;通过使用HINA地址和GCIN之间的链路,根据越区切换请求,越区切换呼叫;根据接收信号强度指示(RSSI)信号的强弱,移动台控制器将移动台切换到具有较强RSSI信号的区域上,随后,切断对RSSI较弱信号的区域的呼叫。
附图说明
图1为示意图,示出在根据已有技术的数字PCS系统中硬越区切换方法;
图2为示意图,示出在根据本发明的优选实旋例的数字PCS系统中软越区切换方法;
图3为示意图,示出根据本发明的优选实施例的多路GCIN接口;
图4为示意图,示出根据本发明的优选实施例的GCIN之间的软越区切换方法。
图5为示意图,示出GCIN将MSC组连接另一MSC组;
图6为示意图,示出在BSC的LCIN中制备的HINA结构;
图7为示意图,示出由根据本发明优选实施例的HINA寻址所分配的GCIN。
实施例说明
下面参照附图描述本发明的优选实施例。为了理解本发明,下面针对具体实施例借助于附图加以描述。应当注意本发明可由本领域的普通技术人员参照说明书而不用参照进一步的细节就可以实现。
图2示出根据本发明优选实施例的数字PCS系统中越区切换的方法。参见附图,为了联接到基站控制器(BSC)组,通过在为便携式路由器的网关互连网络(GCIN)之间使用进程间通信(IPC)而形成链路。
图5示出GCIN是如何将BSC组连接一到另一组上的。如图所示,GCIN_#0是连接到BSC的BCC_#0-BSC_#11中的LCIN的LCIN-#0-LCIN-#11的。每个BSC包括一个LCIN(局域通信互连网)、一个CCP(呼叫控制处理器)和32个TSB(代码转换选择器触排)。每个TSB包括一个SIP(选择器接口处理器),且每个SIP包括5个SVP(选择器声码处理器)。在BSC中的LCIN连接到48个BTS(基站收发系统)中的BCIN(BTS通信互连网络)的BCIN_#0-BCIN-47上。
BSC控制有线和无线链路并执行越区切换功能。在BSC中的LCIN在BTS和BSC的子系统(即CCP、TSB、BCIN等)之间对传输的分组数据提供一个链路。在BSC中的TSB经LCIN形成BTS的通信路径,以在CCP的控制下经该路径传输通信数据和信号信息。此外,TSB给MSC设立一个连接通路以经过该通路交换通信数据。CCP控制呼叫、分配BSC的无线资源,并控制TSB和BTS的启动。CCP还在设立呼叫的过程中分配TSB的选择器,并在选择器与BTS之间建立通信路径以越区切换呼叫。在BSC中的CCP、TSB_#0-TSB_#31连接到MSC上。GCIN连接到BSM(基站管理器)上。
图3示出根据本发明优选实施例的多路GCIN接口。为了使多路GCIN接口(即进程间通信)可用,各网关互连网络GCIN_#0-GCIN_#3应有根据本发明优选实施例的其自己的用于彼此相分辨的身份识别(ID)。为此目的,该ID是由用于分辨GCIN_#0-GCIN_#3的高容量IPC节点交换台系统(HIMA)地址来分配的。
图6示出在BSC的LCIN中制备的HINA结构,图7示出由根据本发明的实施例的HINA地址所分配的GCIN。图5所示BSC中的每个LCIN包括18个HINA,如图6所示。由于每个HINA包括8个节点N1-N7,一个LCIN具有(8×18=)144个节点。每个节点连到对应子系统(即BTS、CCP和TSB)、GCIN和其它LCIN上。
如图7所示,为了分配各节点的HINA地址,LCIN的LCIN_#0-LCIN_#11采用了3个字节(24位)的寻址。图7示例性示出所分配的HINA地址“002000(Hexa)”。3个字节地址信号中的前四位b23-b20(由标号10代表)代表LCIN的ID。例如,LCIN的ID由“0000”-“1011”的b23-b20位所代表。
常规上说,GCIN是由“11110100”(F4(Hexa))的最前的字节(即前8位b23-b16)所分配的。也说是说,GCIN的地址被设成“F4XXXX(Hexa)”,其中X代表“不用理会”。
在本发明的实施例中,GCIN的地址是通过使用3字节HINA地址的前4位b23-b20来分配的。例如,在系统包括4个网关互连网络GCIN_#0-GCIN_#3的情况下,对GCIN分配HINA地址的前4位b23-b20中的两位b21和b20。也就是说,如图7的标号20所示,分别对GCIN_#0、GCIN_#1、GCIN_#2和GCIN_#3分配前4位b23-b20的“1100”、“1101”、“1110”和“1111”。此外,如果系统包括十六个网关互连网络GCIN,b23-b20的所有前4位都会被用到。
见图4,根据本发明经GCIN的GCIN_#0和GCIN_#1之间的IPC链路P2的分组处理是由连接再中断软越区切换方法来实现的。
图4示出根据本发明优选实施例在GCIN之间的连接再中断软越区切换方法。见图4,如果一个移动站(MS)30移动到蜂窝单元边界上,当时提供呼叫服务的BSC_#0将用于越区切换的分组数据不仅发送到当前蜂窝单元中的BTS_#0上,而且还发送到相邻峰窝单元中的BTS_#1中。在此情况下,分组数据的目标地址则是由BSC_#0来确定的。根据本发明GCIN_#0和GCIN_#1具有在其之间形成的链路P2,并且有为其而分配的HINA地址。
BSC_#0的BTS_#0测出经BSC_#0中的提供当前呼叫服务的BTS_#0的BCIN_#0(其呼叫处理流为SVP_#0-SIP_#0-LCIN_#0)的移动站30的RSSI(接收信号强度指示)信号。类似地,BSC_#1的BTS_#1测量经SVP_#0-SIP_#0-LCIN_#0→GCIN_#0-GCIN_#1→LCIN_#1→BCIN_#1的软越区切换路径的移动站30的RSSI信号。结果,移动站30被越区切换到具有较强RSSI信号的站上,随后,切断对RSSI信号较弱的站的呼叫。依此方法,在不用硬越区切换算法的情况下,可以保持正常的通话呼叫。
如上所述,本发明的软越区切换方法将呼叫分配给几个MSC,而不是将呼叫接到一个具体的MSC上,并避免MSC之间的硬越区切换,从而稳定地保持呼叫。此外,由于不需要在MSC之间的硬越区切换请求和根据硬越区切换请求而确认收到消息(ACK),因此可将MSC间不需要的消息删除。
虽然参照附图描述了本发明的实施例,应当理解本发明并不局限于这些具体实施例,在不背离本发明精神实质的范围内可由本领域的普通技术人员作出各种改变,而这些都应包括在本发明的范围内。
Claims (2)
1.一种连接再中断软越区切换的方法,其特征在于,包括步骤:
通过使用进程间通信(IPC)将基站控制器(BSC)彼此联接而在网关互连网络(GCIN)之间形成链路;
分配用于分辨所述GCIN的高容量IPC节点交换台系统(HINA)地址,以由GCIN之间的进程间通信来执行越区切换;
通过使用所述HINA地址以及所述GCIN之间的链路,根据越区切换请求,越区切换呼叫;
根据接收信号强度指示(RSSI)信号的强弱,移动台控制器将移动台切换到具有较强RSSI信号的区域上,随后,切断对RSSI较弱信号的区域的呼叫。
2.如权利要求1所述的连接再中断软越区切换的方法,其特征在于,所述分配用于分辨所述GCIN的HINA地址的步骤包括将局域通信互联网络的每一个节点分配给所述HINA地址;并且将所述HINA地址的前四位被分配给用于从其它的GCIN中分辨出所述各GCIN的位。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR1236/97 | 1997-01-17 | ||
KR1019970001236A KR100217426B1 (ko) | 1997-01-17 | 1997-01-17 | 코드분할다원접속방식의개인휴대통신서비스시스템에서의호절환방법 |
Publications (2)
Publication Number | Publication Date |
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CN1191462A CN1191462A (zh) | 1998-08-26 |
CN1090438C true CN1090438C (zh) | 2002-09-04 |
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CN98103670A Expired - Fee Related CN1090438C (zh) | 1997-01-17 | 1998-01-17 | 在个人通信服务系统中手动切断的方法 |
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US (1) | US6009327A (zh) |
JP (1) | JP2914942B2 (zh) |
KR (1) | KR100217426B1 (zh) |
CN (1) | CN1090438C (zh) |
DE (1) | DE19800763C2 (zh) |
FR (1) | FR2758684B1 (zh) |
GB (1) | GB2323255B (zh) |
RU (1) | RU2144262C1 (zh) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US6862449B1 (en) * | 1998-05-14 | 2005-03-01 | Fujitsu Limited | Reducing interference in cellular mobile communications networks |
GB2337414A (en) * | 1998-05-14 | 1999-11-17 | Fujitsu Ltd | Soft handoff in cellular communications networks |
GB2341047B (en) * | 1998-08-19 | 2003-09-10 | Motorola Ltd | Method and apparatus for streamlining in a communication system |
SE516828C2 (sv) * | 2000-05-18 | 2002-03-12 | Ericsson Telefon Ab L M | Förfarande och anordning för att hantera handover i ett cellulärt radiosystem |
KR100374337B1 (ko) * | 2000-05-24 | 2003-03-04 | 삼성전자주식회사 | 통신시스템에 있어서 무선데이타 통신 방법 및 시스템 |
KR100414013B1 (ko) * | 2000-11-08 | 2004-01-07 | 주식회사 하이닉스반도체 | 디지털 이동통신 시스템에서의 지씨아이엔 링크의 오류검출 및 복구방법 |
US7711377B2 (en) * | 2004-06-10 | 2010-05-04 | Qualcomm Incorporated | Efficient paging in a wireless communication system |
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US4829554A (en) * | 1985-01-31 | 1989-05-09 | Harris Corporation | Cellular mobile telephone system and method |
US5267261A (en) * | 1992-03-05 | 1993-11-30 | Qualcomm Incorporated | Mobile station assisted soft handoff in a CDMA cellular communications system |
WO1995008897A1 (en) * | 1993-09-24 | 1995-03-30 | Nokia Telecommunications Oy | Inter-exchange soft handoff in a cellular telecommunications system |
WO1995015665A1 (en) * | 1993-12-02 | 1995-06-08 | Motorola Inc. | Communication across regional entities |
CN1133669A (zh) * | 1993-10-28 | 1996-10-16 | 夸尔柯姆股份有限公司 | 降低基站软切换期间下行链路平均发送功率的方法和装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0865728A (ja) * | 1994-08-24 | 1996-03-08 | Hitachi Ltd | 移動体通信ネットワークおよび呼制御方法 |
US5708657A (en) * | 1996-04-02 | 1998-01-13 | Electronics And Telecommunications Research Institute | Apparatus for interfacing mobile switching center(MSC) with base station controller(BSC) of CDMA mobile system |
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1997
- 1997-01-17 KR KR1019970001236A patent/KR100217426B1/ko not_active IP Right Cessation
-
1998
- 1998-01-12 DE DE1998100763 patent/DE19800763C2/de not_active Expired - Fee Related
- 1998-01-16 FR FR9800429A patent/FR2758684B1/fr not_active Expired - Fee Related
- 1998-01-16 RU RU98100677A patent/RU2144262C1/ru not_active IP Right Cessation
- 1998-01-17 CN CN98103670A patent/CN1090438C/zh not_active Expired - Fee Related
- 1998-01-19 JP JP805398A patent/JP2914942B2/ja not_active Expired - Fee Related
- 1998-01-19 GB GB9801022A patent/GB2323255B/en not_active Expired - Fee Related
- 1998-01-20 US US09/009,109 patent/US6009327A/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4829554A (en) * | 1985-01-31 | 1989-05-09 | Harris Corporation | Cellular mobile telephone system and method |
US5267261A (en) * | 1992-03-05 | 1993-11-30 | Qualcomm Incorporated | Mobile station assisted soft handoff in a CDMA cellular communications system |
WO1995008897A1 (en) * | 1993-09-24 | 1995-03-30 | Nokia Telecommunications Oy | Inter-exchange soft handoff in a cellular telecommunications system |
CN1133669A (zh) * | 1993-10-28 | 1996-10-16 | 夸尔柯姆股份有限公司 | 降低基站软切换期间下行链路平均发送功率的方法和装置 |
WO1995015665A1 (en) * | 1993-12-02 | 1995-06-08 | Motorola Inc. | Communication across regional entities |
CN1117336A (zh) * | 1993-12-02 | 1996-02-21 | 摩托罗拉公司 | 用于通信系统中的跨地区实体通信的方法和设备 |
Also Published As
Publication number | Publication date |
---|---|
DE19800763A1 (de) | 1998-07-30 |
US6009327A (en) | 1999-12-28 |
RU2144262C1 (ru) | 2000-01-10 |
JPH10229580A (ja) | 1998-08-25 |
KR19980065963A (ko) | 1998-10-15 |
FR2758684B1 (fr) | 2001-05-25 |
GB2323255A (en) | 1998-09-16 |
GB2323255B (en) | 1999-03-03 |
DE19800763C2 (de) | 2003-10-23 |
KR100217426B1 (ko) | 1999-09-01 |
CN1191462A (zh) | 1998-08-26 |
FR2758684A1 (fr) | 1998-07-24 |
JP2914942B2 (ja) | 1999-07-05 |
GB9801022D0 (en) | 1998-03-18 |
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