WO2012016988A1 - Procede de gestion d'un mode degrade d'une cellule dans un reseau de radiocommunication - Google Patents
Procede de gestion d'un mode degrade d'une cellule dans un reseau de radiocommunication Download PDFInfo
- Publication number
- WO2012016988A1 WO2012016988A1 PCT/EP2011/063309 EP2011063309W WO2012016988A1 WO 2012016988 A1 WO2012016988 A1 WO 2012016988A1 EP 2011063309 W EP2011063309 W EP 2011063309W WO 2012016988 A1 WO2012016988 A1 WO 2012016988A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- master transmitter
- channel
- network
- site controller
- packets
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/04—Arrangements for maintaining operational condition
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
Definitions
- a method of managing a degraded mode of a cell in a radio communication network relates to a method for managing a degraded mode of a cell in a radio communication network, the method being implemented in a communication system.
- controller also called “base station controller” in English, in order to control sites that include in particular at least one transceiver transmitter and an antenna.
- Such a site has the role of transmitting and receiving communications relating to terminals located in a zone, called cell, associated.
- transmitters present on different sites can transmit on the same frequency band in transmission and reception so as to form a transmission channel allocated, in a dynamic manner or "trunked" in English, to communications between terminals of the cell.
- the local control console can initiate a group call or be solicited to enter a group call. It is therefore adapted for private network radio (PMR) private network operation.
- PMR private network radio
- such a console is operated by a professional, such as a security officer or a network maintenance agent, who can thus contact, via a transmitter, quickly and reliably with said terminals.
- a professional such as a security officer or a network maintenance agent
- a remote console typically in a monitoring center, can be informed of the implementation of degraded mode of a cell to possibly establish communications with the terminals of this cell , said remote control console for performing the same functions as a local control console, including initiating a group communication or being asked to enter a group communication.
- the invention proposes a method for managing a degraded mode of a cell of a cellular telecommunications network, said network comprising a site controller intended to control, via a packet network, a plurality of transmitters distributed at different sites of the cell so that transmitters implementing the same pair of frequencies on different sites form a channel, which in dynamic mode is allocated dynamically to any communication between terminals of the cell, said channel comprising a master transmitter selected by the site controller, characterized in that it comprises in each master transmitter when detecting a failure of the site controller the following steps:
- a switchover in degraded mode of the master transmitter by associating with the channel a predefined and known communication of the terminals, and a transmission from the master transmitter, via the packet network, of a control message informing at least one control console connected to the packet network of the implementation of the degraded mode so that the control console participates via said network; packets to a communication in progress in the channel.
- a control console can be informed of a failure of the site controller and the establishment of a degraded mode by the transmitters of the cell even though the console is not directly connected to the transmitters .
- the indication of the establishment of the degraded mode is performed via a packet network which also allows the control console to participate in communications enabled in this degraded mode.
- the method according to the invention may also have one or more of the following characteristics, considered individually or in any technically possible combination:
- control message is transmitted periodically to a multicast control address of the packet network
- control message includes a status indicator of the predefined communication in the associated channel, indicating:
- the master transmitter is also considered in the passive state
- control message transmitted by the master transmitter comprises at least one of the following information: an identifier of the master transmitter, an identifier of the associated channel, a predefined frequency pair associated with the channel, a multicast traffic address;
- the method according to the invention comprises in the master transmitter the steps of: o transmitting IP packets of digitized phonic data from a terminal to the traffic multicast address carried by the control message, and
- IP packets of scanned phonic data via the multicast traffic address, the IP packets from a control console so that they are transmitted by the master transmitter to the terminals;
- the method according to the invention comprises in each master transmitter when the site controller is no longer faulty:
- the present invention also relates to a communication system comprising a cell of a cellular telecommunications network, said network comprising a site controller for controlling, via a packet network, a plurality of transmitters distributed over different sites of the cell.
- a site controller for controlling, via a packet network, a plurality of transmitters distributed over different sites of the cell.
- transmitters implementing the same pair of frequencies at different sites form a channel, which in dynamic mode is dynamically allocated to any communication between terminals of the cell, said channel comprising a master transmitter selected by the controller of sites, characterized in that it comprises in each master transmitter during a failure of the site controller:
- switching means for switching the master transmitter in degraded mode by associating with the channel a predefined and known communication of the terminals, and transmission means for transmitting, via the packet network, a control message informing at least one control console connected to the packet network of the implementation of the degraded mode so that the control console participates via said network of packets to a communication in progress in the channel.
- the system according to the invention may also have one or more of the following characteristics, considered individually or in any technically possible combination:
- the system according to the invention also comprises transmission and reception means in each master transmitter for:
- IP packets of digitized phonic data from a terminal to a multicast traffic address destined for at least one control console and receiving IP packets of digitized phonic data via the multicast address of traffic, the packets IP from a control console so that they are transmitted from the master transmitter to the terminals.
- the detection means of each master transmitter detect a good operation of the site controller, the switching means of each master transmitter switch each master transmitter of the degraded mode in dynamic mode, and the means transmission of each master transmitter transmit the control message informing at least one control console connected to the packet network of the end of the degraded mode.
- the present invention also relates to a master transmitter of a communication system comprising a cell of a cellular telecommunication network, said network comprising a site controller for controlling, via a packet network, a plurality of transmitters, distributed on different sites of the cell so that transmitters whose master transmitter, implementing the same pair of frequencies on different sites form a channel, which in mode dynamic is allocated dynamically to any communication between terminals of the cell, characterized in that it comprises during a failure of the site controller:
- switching means for switching the master transmitter in degraded mode by associating with the channel a predefined and known communication of the terminals
- transmission means for transmitting, via the packet network, a control message informing at least one control console connected to the packet network of the implementation of the degraded mode so that the control console participates via said network of packets to a communication in progress in the channel.
- the master transmitter according to the invention may also have one or more of the following characteristics, considered individually or in any technically possible combination:
- the master transmitter also comprises transmission and reception means for:
- IP packets of digitized phonic data from a terminal to a multicast traffic address destined for at least one control console and receiving IP packets of digitized phonic data via the multicast address of traffic, the packets IP from a control console so that they are transmitted from the master transmitter to the terminals;
- the detection means detect a good operation of the site controller, the switching means switch the transmitters of the associated channel in dynamic mode, and the transmission means transmit the informing control message to the site controller; least a control console connected to the packet network of the end of the degraded mode.
- a communication system comprising a site controller 100, a radiocommunication network 102, transmitting and receiving radiocommunications in a cell 104.
- the controller 100 controls a plurality of sites 1 to I such that each site i, with i between 1 and I, comprises a plurality of transmitters transmitting and receiving on separate frequency pairs to terminals 105. Transmitters transmitting and receiving on the same frequency pair and belonging respectively to different sites form a radio transmission channel.
- a site is also called base station and in English “base transceiver station” or abbreviated BTS.
- the site controller also called in English “base station controller” or abbreviated BSC can control the sites.
- a site controller manages the allocation of communication channels, controls the roaming of terminals called in English
- each site i being provided with three transmitters 108 ,, 1 10, and 1 12, each implementing a clean transmission channel, for example, each site implements three channels 10, 20 and 30 of transmission.
- the transmitters 108i, 108 2 and 108 3 transmit and receive from the different respective sites 1, 2 or 3 on the same pair of transmitting and receiving frequencies thus forming a first channel 10
- the transmitters 1 10-1, 1 1 O 2 and H O 3 emit on a second channel 20
- the transmitters 1 12-1, 1 12 2 and 1 12 3 emit on a third channel.
- channel 30 as shown in the example of the attached figure.
- the radio resources are managed dynamically, or "trunked network" in English. More precisely, the site controller 100 dynamically allocates one of the free transmission channels to the activation of any communication by terminals of the cell or by a remote entity such as a control console or a device of another cell.
- a control console makes it possible to perform the same functions as a local control console, namely:
- Site controller 100 selects for each channel 10, 20, and
- a master transmitter for example II O-1, I O82 and 1 12 3 , among the transmitters transmitting on the same transmission channel.
- This master transmitter has the role of synchronizing the transmission from all transmitters of the same channel of a message to the terminals of the cell. This synchronization can be achieved, for example by means of GPS satellite signals for "Global Positioning Signal" in English, so that each transmitter receives the message to be transmitted together with a date to reach at the same time transmit the message on the associated transmission channel. It is also possible to provide that the master transmitter communicates temporary references to other transmitters of the associated transmission channel such as radio transmission times messages, durations of these messages, in order to synchronize the transmission of messages.
- the site controller 100 selects each master transmitter in a predefined or random manner, the selection of one or more master transmitters being able to change during operation of the cell.
- the controller 100 selects at least one channel - the channel 10 in this example - as a control channel whose frequency band is implemented in particular to exchange the necessary signaling 105.
- the other channels 20 and 30 are allocated dynamically by the controller 100 to communications at their facilities.
- one or more remote control consoles 101 or 103 connected to the IP packet network 1 14 may participate in communications with the terminals 105 via the site controller 100.
- each master transmitter periodically transmits a control message 1 15 to a multicast address, called the control address, of the packet network 1 14 allowing the control consoles 101, 103 to be informed of the degraded mode of the cell .
- the multicast control address may be identical for all the control messages 1 transmitted by the master transmitters. Alternatively, the control multicast address may be different for control messages 1 transmitted by different master transmitters.
- each master transmitter also indicates the state of the predefined communication in the associated transmission channel.
- the control message 1 15 therefore comprises a status indicator of the communication in the channel.
- the indicator indicates an active state when the predefined communication is established by a terminal 105 on the associated channel, the master transmitter being in this case also considered in the active state. In the opposite case, the indicator indicates a passive state for the communication and the master transmitter and no communication is in progress on the associated channel.
- each active master transmitter also indicates the multicast address, referred to as the traffic address, of the packet network 1 14 enabling the control consoles 101, 103 to participate in the communication in progress in the transmission channel. associated.
- the traffic address is different for each transmission channel associated with each master transmitter in degraded mode.
- the master transmitter uses the traffic address to transmit the digitized phonic data IP packets from the terminals 105 to the control consoles and makes it possible to receive the digitized phonic data IP packets from the control consoles to the terminals 105.
- a method of managing the degraded mode of the cell according to the invention is implemented in means 1 16i, 1 17i and 1 18i, located in each of the master transmitters.
- the method comprises the following steps:
- Each master transmitter also comprises means for transmitting and receiving 1 19i IP voice packets to or from the traffic multicast address.
- the means 19i receive IP packets of digitized phonic data originating from the terminals 105 participating in the predefined communication and transmit them to the multicast traffic address destined for the control consoles 101, 103 connected to the IP packet network 1.
- the means 1 19i of the master transmitter receive, via the multicast traffic address, digitized phonic data IP packets originating from at least one control console 101, 103 and transmit them to the terminals 105 participating in the predefined communication in progress.
- the means 1 16i, 1 17i 1 18i and 1 19i may be software means located in each master transmitter.
- Each periodic message 1 transmitted by an active master transmitter to the control address includes information useful to a console operator 101 or 103 and relating to the current communication.
- the information includes: an identifier of the master transmitter, an identifier of the associated channel, the transmission / reception frequency pair associated with the channel, and the multicast traffic address on which the digitized phonic data IP packets from the terminals 105 are transmitted. and from which the digitized phonic data IP packets from the control consoles to the terminals 105 are received.
- the master transmitters can notify the control consoles in the message 1 15 of the end of the degraded mode. To do this, the method comprises the following steps:
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2807163A CA2807163C (fr) | 2010-08-04 | 2011-08-02 | Procede de gestion d'un mode degrade d'une cellule dans un reseau de radiocommunication |
AU2011287635A AU2011287635B2 (en) | 2010-08-04 | 2011-08-02 | Method for managing a degraded mode of a cell in a radiocommunication network |
NZ60704011A NZ607040A (en) | 2010-08-04 | 2011-08-02 | Method for managing a degraded mode of a cell in a radiocommunication network |
US13/813,992 US9301168B2 (en) | 2010-08-04 | 2011-08-02 | Method for managing a degraded mode of a cell in a radiocommunication network |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1056448 | 2010-08-04 | ||
FR1056448A FR2963719B1 (fr) | 2010-08-04 | 2010-08-04 | Procede de gestion d'un mode degrade d'une cellule dans un reseau de radiocommunication |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012016988A1 true WO2012016988A1 (fr) | 2012-02-09 |
Family
ID=43769091
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2011/063309 WO2012016988A1 (fr) | 2010-08-04 | 2011-08-02 | Procede de gestion d'un mode degrade d'une cellule dans un reseau de radiocommunication |
Country Status (6)
Country | Link |
---|---|
US (1) | US9301168B2 (fr) |
AU (1) | AU2011287635B2 (fr) |
CA (1) | CA2807163C (fr) |
FR (1) | FR2963719B1 (fr) |
NZ (1) | NZ607040A (fr) |
WO (1) | WO2012016988A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9800327B2 (en) * | 2014-11-20 | 2017-10-24 | At&T Intellectual Property I, L.P. | Apparatus for controlling operations of a communication device and methods thereof |
CN111970340B (zh) * | 2020-07-30 | 2023-06-16 | 北京大米科技有限公司 | 信息传输方法、可读存储介质和电子设备 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000014986A1 (fr) * | 1998-09-03 | 2000-03-16 | Interwave Communications, Inc. | Systeme de communication par reseau cellulaire |
EP1198147A2 (fr) * | 2000-10-13 | 2002-04-17 | Telefonaktiebolaget L M Ericsson (Publ) | Système et procédé de couplage des noeuds dans un réseau d'acces radio de la troisième génération |
US20070225028A1 (en) * | 2006-03-23 | 2007-09-27 | Samsung Electronics Co., Ltd. | Adjacent-cell assisted redundancy for wireless communication networks |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US6683848B1 (en) * | 1999-06-08 | 2004-01-27 | Cisco Technology, Inc. | Frame synchronization and fault protection for a telecommunications device |
US6996414B2 (en) * | 2001-04-30 | 2006-02-07 | Motorola, Inc. | System and method of group calling in mobile communications |
WO2007102749A1 (fr) * | 2006-03-06 | 2007-09-13 | Intel Corporation | Procédé et appareil pour synchroniser des stations de base dans un système d'accès au haut débit sans fil |
US7813267B2 (en) * | 2006-08-29 | 2010-10-12 | Cisco Technology, Inc. | Method and system for providing control plane resiliency with undisrupted forwarding in a data network |
KR101500025B1 (ko) * | 2008-04-21 | 2015-03-06 | 애플 인크. | 무선 중계 프레임 구조, 프로토콜, 및 오퍼레이션을 위한 시스템 및 방법 |
US8856580B2 (en) * | 2011-04-07 | 2014-10-07 | Hewlett-Packard Development Company, L.P. | Controller election |
-
2010
- 2010-08-04 FR FR1056448A patent/FR2963719B1/fr active Active
-
2011
- 2011-08-02 AU AU2011287635A patent/AU2011287635B2/en active Active
- 2011-08-02 CA CA2807163A patent/CA2807163C/fr active Active
- 2011-08-02 NZ NZ60704011A patent/NZ607040A/en unknown
- 2011-08-02 WO PCT/EP2011/063309 patent/WO2012016988A1/fr active Application Filing
- 2011-08-02 US US13/813,992 patent/US9301168B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000014986A1 (fr) * | 1998-09-03 | 2000-03-16 | Interwave Communications, Inc. | Systeme de communication par reseau cellulaire |
EP1198147A2 (fr) * | 2000-10-13 | 2002-04-17 | Telefonaktiebolaget L M Ericsson (Publ) | Système et procédé de couplage des noeuds dans un réseau d'acces radio de la troisième génération |
US20070225028A1 (en) * | 2006-03-23 | 2007-09-27 | Samsung Electronics Co., Ltd. | Adjacent-cell assisted redundancy for wireless communication networks |
Also Published As
Publication number | Publication date |
---|---|
AU2011287635A1 (en) | 2013-03-07 |
AU2011287635B2 (en) | 2015-05-07 |
FR2963719B1 (fr) | 2012-09-21 |
US20130201818A1 (en) | 2013-08-08 |
US9301168B2 (en) | 2016-03-29 |
CA2807163A1 (fr) | 2012-02-09 |
NZ607040A (en) | 2015-04-24 |
FR2963719A1 (fr) | 2012-02-10 |
CA2807163C (fr) | 2018-02-06 |
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