WO2005091524A1 - Verfahren zur kommunikation über eine mehrzahl von netzseitigen sendeantennen - Google Patents
Verfahren zur kommunikation über eine mehrzahl von netzseitigen sendeantennen Download PDFInfo
- Publication number
- WO2005091524A1 WO2005091524A1 PCT/EP2004/053686 EP2004053686W WO2005091524A1 WO 2005091524 A1 WO2005091524 A1 WO 2005091524A1 EP 2004053686 W EP2004053686 W EP 2004053686W WO 2005091524 A1 WO2005091524 A1 WO 2005091524A1
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- WO
- WIPO (PCT)
- Prior art keywords
- ant
- network
- message
- antennas
- radio
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
Definitions
- the invention relates to a method for communication in a radio communication system according to the preamble of claim 1. Furthermore, the invention relates to a network-side device and a computer program product for carrying out the method.
- secondary messages such as signaling messages or user data messages with voice information, image information, video information, SMS (Short Message Service), MMS (Multimedia Messaging Service) or other data
- SMS Short Message Service
- MMS Multimedia Messaging Service
- the stations may be of different types on the subscriber side
- Radio stations and network radio devices act.
- at least part of the subscriber-side radio stations are mobile radio stations.
- the radiation of the electromagnetic waves takes place with carrier frequencies which lie in the frequency band provided for the respective system.
- Mobile radio communication systems are often called cellular systems e.g. according to the standard GSM (Global System for Mobile Communication) or UMTS (Universal Mobile Telecommunications System) with network-side devices such.
- GSM Global System for Mobile Communication
- UMTS Universal Mobile Telecommunications System
- Base stations and facilities for controlling and controlling the base stations formed.
- WLANs wireless local area networks
- AP Access Point
- WLANs wireless local area networks
- the cells covered by the radio access points (AP: Access Point) of the WLANs are small with a diameter of up to several hundred meters compared to conventional mobile radio lines. Examples of different standards for WLANs are HiperLAN, DECT, IEEE 802.11, Bluetooth and WATM.
- the invention has for its object to provide an efficient method of communication in which a message is sent via a plurality of network-side antennas to a radio station. Furthermore, a network-side device and a computer program product for a network-side device for carrying out the method are proposed.
- the method is used in a radio communication system comprising network-side devices and radio stations.
- a message from a radio station is received by network-side antennas.
- a user data message is transmitted to the radio station via a plurality of network-side antennas.
- the affiliation of network-side antennas to the plurality of network-side antennas depends on which network-side antennas have received the message of the radio station.
- the message received on the network side is a response message sent on receipt of a signaling message.
- the signaling message requests the radio station to send a response message and is transmitted to the radio station via at least one network-side antenna.
- the network-side devices of the radio communication system may be e.g. to network-side antennas, devices for controlling the antennas and facilities for creating to send and processing of received messages act.
- the radio stations may e.g. various, in particular mobile, subscriber stations include.
- the radio communication system may be a cellular system, each radio cell having one or more network-side antennas. In the case of several network-side antennas per radio cell, all network-side antennas of the respective radio cell are connected to a network-side device which transmits messages to be broadcast to the network-side antennas. Network-side antennas of different radio cells receive the messages to be broadcasted by them from different network-side devices.
- the message of the radio station on the basis of whose reception can be decided on the network side, via which network-side antennas to a future to be sent user data message the radio station is to be transmitted may in particular comprise identification information of the radio station.
- a user data message is sent to the radio station via a plurality of antennas.
- the composition of the plurality of network-side antennas ie the question of which network-side antennas consists of the majority of network-side antennas, can be set such that all those network-side antennas which have received the destination of the radio station or with a minimum reception level received, send the payload message to the radio station.
- network-side antennas have received the message of the radio station
- further criteria for determining the plurality of network-side antennas can be used, such as a minimum or maximum number of network-side antennas to be used, a utilization of network-side antennas and / or a geographical or cellular distribution or arrangement of the network-side antennas.
- the network-side antennas of the plurality of network-side antennas are located at different positions within the radio communication system, i. are separated by distances which are large compared to the wavelength used for radio transmission.
- the network-side antennas of a cell can be distributed approximately regularly over the cell.
- the transmission of the user data message to the radio station via the plurality of network-side antennas is timely synchronous or at least approximately synchronous or with network-side specified time differences between the sending of the user data message via the individual network-side antennas.
- the signaling message is sent via a group of network-side antennas, this group comprising the majority of the network-side antennas, via which is later sent the payload message to the radio station includes.
- the signaling message may in particular comprise identification information of the radio station.
- the radio station is explicitly requested to send the message, which can then be used on the network side to select suitable network-side antennas for sending messages to the radio station.
- the signaling message is sent exclusively for the purpose of requesting the reply message.
- the signaling message is sent at regular first intervals. It is also possible for the signaling message to be sent to the radio station before the transmission of the user data message on the condition that a certain second time interval has elapsed since the last transmission of a message of the type of the signaling message.
- the last-mentioned embodiment makes it possible, when the network side has a user data message for the radio station, to check when the last time it was determined which network-side antennas are to be used for transmission. If this last determination is longer than the second time interval, then a signaling message can be sent in order to determine the suitable network-side antennas before the transmission of the user data message.
- the signaling message is sent via all network-side antennas of one or more radio cells of the radio communication system or via all network-side antennas of the radio communication system.
- the decision about which network-side antennas the sig- nalleitersnachricht is sent to the radio station can be made dependent on how exactly the current position of the radio station in the radio communication system is known.
- the plurality of network-side antennas belong to the same radio cell of the radio communication system, or that at least some of the network-side antennas of the plurality of network-side antennas belong to different radio cells of the radio communication system. This allows handover operations between different radio cells to be simplified.
- the signaling message comprises identification information of the respective radio cell via whose network-side antenna or antennas it is transmitted, and the response message comprises identification information of that radio cell or radio cells from whose network-side antenna or antennas the radio station has received the signaling message. If the signaling message is broadcast via network-side antennas of a plurality of radio cells, then the signaling message carries in these radio cells each a different cell-specific identification information. If the radio station only receives the signaling message via network-side antennas of a single radio cell, the reply message contains identification information only from this radio cell. On the other hand, if the radio station receives the signaling message via network-side antennas of a first and a second radio cell, then the response message includes identification information from both radio cells.
- the network-side device comprises: means for receiving via network-side antennas of a message of a radio station or for receiving information about the reception via network antennas of a message of a radio station, wherein it is at the network side message received on the receipt of at least one a network-side antenna to the radio station (MS) signaling message, which the radio station requests to send a response message sent, sent response message, means for arranging that a user data message is sent to the radio station via a plurality of network-side antennas, and
- MS radio station
- the means present in the network-side device according to the invention can be realized in particular by a computer program product.
- a computer program product apart from the actual computer program (with its technical effect beyond the normal physical interaction between program and arithmetic unit), is in particular a record carrier for the computer program, a file library, a configured arithmetic unit, but also, for example, a memory device or a server on which the computer program associated files are stored understood.
- the network-side device according to the invention and also the computer program product according to the invention are particularly suitable for carrying out the method according to the invention, whereby this also applies to the refinements and developments. For this they may have other suitable means.
- the network-side device according to the invention can also be realized by a plurality of interconnected network-side devices, which have the respective means.
- FIG. 1 shows a section of a radio communication system
- FIG. 2 shows a first flowchart of a method according to the invention
- FIG. 3 shows a second flow diagram of a method according to the invention
- Figure 4 shows schematically the structure of a network-side control device according to the invention.
- FIG. 1 shows two radio cells FZ1 and FZ2 of a radio communication system illustrated by clouds.
- Distributed in the first radio cell FZ1 are the three network-side antennas ANT-A, ANT-B and ANT-C, which are connected to the first control device APS1 (APS: Antenna Processing Station). While the antennas ANT-A, ANT-B and ANT-C are used for receiving and sending messages from and to radio stations, such as e.g. the mobile station MS, are responsible, takes place any processing of radio signals in the controller APSl.
- the two control devices APS1 and APS2 are connected to one another, if appropriate via further devices. Other radio cells, infrastructure facilities and subscriber radio stations are not shown in Figure 1 for the sake of clarity.
- a radio cell is here understood to mean the geographical area which is supplied by those network-side antennas which are connected to a common control device. Antennas of different radio cells are thus not directly connected to the same control device. Different radio cells may overlap. If a message is sent in the downward direction to the mobile station MS, the transmission takes place simultaneously via a plurality of network-side antennas. The mobile station MS can combine the signals of the various network-side antennas and thus decode a message more reliably than when sent by a single network-side antenna. In this case, it is advantageous to send a message only via those antennas whose signals the MobilStation MS can receive based on their current location. If antennas are used beyond this, unnecessary interference is generated for messages from other subscriber stations.
- FIG. 2 shows the case that the message
- the MESSAGE is received by the antennas ANT-A, ANT-B and ANT-C.
- This constellation can correspond, for example, approximately to the position of the mobile station MS shown in FIG.
- the three antennas ANT-A, ANT-B and ANT-C notify the controller APSl that they have received the message MESSAGE from the mobile station MS, or forward the three antennas ANT-A, ANT-B and ANT-C, the message MESSAGE the mobile station MS to the controller APSl on. If there is a message DATA on the network side for the mobile station MS, it is sent by the control device APS1 to the three antennas ANT-A, ANT-B and ANT-C, which forward them to the mobile station MS.
- the mobile station MS transmits the message MESSAGE unsolicited at regular intervals T-MS. Until the next transmission of the message MESSAGE, the antennas ANT-A, ANT-B and ANT-C determined on the basis of the reception of the previous message MESSAGE are used for sending messages to the mobile station MS. The length of the time interval between the individual transmissions of the messages MESSAGE is communicated to the mobile station MS by the network. It can be considered here that, if the mobile station MS frequently
- FIG. 2 shows the case that the next message MESSAGE sent by the mobile station MS is received by the antennas ANT-B, ANT-C and ANT-D.
- this would correspond to the constellation that the mobile station MS has moved upwards and / or to the right.
- the antennas ANT-B, ANT-C and ANT-D notify the controller with the messages INFORM that they have received the message MESSAGE of the mobile station MS, or forward the three antennas ANT-B, ANT-C and ANT-D the message MESSAGE the mobile station MS to the controller APSl on.
- the notification of the control device APSl by the antenna ANT-D can be made via the control device APS2 connected to the antenna ANT-D.
- the two antennas ANT-B and ANT-C may inform the control device APS1 allocated to them, and the antenna ANT-D to inform the control device APS2 assigned to it, after which the forward both controllers APSl and APS2 information about the receipt of the message MESSAGE in their radio cells or the message MESSAGE to a common network-side device, which then transmits them to the mobile station MS to be sent message DATA.
- the message DATA is sent to the mobile station MS via the three antennas ANT-B, ANT-C and ANT-D.
- FIG. 2 Another approach is shown in FIG. While in FIG. 2 the mobile station MS sends the message MESSAGE from whose reception the antennas in the following are to be sent to the mobile station MS unsolicited, the dispatch of a message ADR takes place at the beginning of the method sequence shown in FIG (ADR: Antenna Detection Request) to the mobile station MS, by means of which the mobile station MS is requested by naming their identification information to send a signaling message with their identification information.
- the message ADR is sent to the mobile station MS via the three antennas ANT-A, ANT-B and ANT-C.
- the network is known that the mobile station MS is in the radio cell FZl or at least in the immediate vicinity of the radio cell FZl.
- the mobile station MS transmits the message ADD (ADD: Antenna Detection Done) comprising its identification information received from the antennas ANT-B and ANT-C.
- the antennas ANT-B and ANT-C inform the control device APS1 with the message INFORM that they have received a message ADR from the mobile station MS, or forward the message ADR from the mobile station MS to the control device APS1.
- the message DATA via the antennas ANT-B and ANT-C, which the message ADR from the Mobile station MS have been sent to the mobile station MS.
- the message ADR can be sent at regular intervals. It is more advantageous, however, that a
- ADR is always broadcast when the network side, a message to the mobile station MS is present. It is also possible, in the presence of a message to the mobile station MS, to check when the last message ADR has been sent and to send a new message ADR only if a certain period of time has elapsed since the last transmission.
- the messages ADR can be equipped with identification information of the radio cell in which they are sent. If a message ADR is broadcast in a plurality of radio cells, the identification information corresponding to the respective radio cell is inserted into the message ADR in each radio cell. When the mobile station MS then sends a response ADD to the message ADR, it adds to the response ADD the identification information of those radio cells via whose antennas it has received the message ADR. This is advantageous in particular when the mobile station MS receives the message ADR from antennas of different radio cells.
- the control device of a radio cell is known by the evaluation of the message ADD that a mobile station can also receive antennas of other radio cells, without this fact having to be communicated to the respective control device by another control device or another network device.
- the mobile station MS After receiving a message DATA, the mobile station MS confirms the reception beginning of the message DATA by sending a message ACK, which identification information of the mobile station MS comprises.
- a message ACK which identification information of the mobile station MS comprises.
- Those network-side antennas which have received the message ACK in Figure 3, the antennas ANT-B, ANT-C and ANT-D, inform as described above with the
- the controller APSl or the controllers APSl and APS2 on the receipt of the message ACK from the mobile station MS, and forward the message ACK from the mobile station MS to the respective control device APSl or APS2 on. Subsequently, the three antennas ANT-B, ANT-C and ANT-D are used for the next message transmission to the mobile station MS.
- acknowledgment messages ACK of the mobile station MS are used to determine the future network-side transmission antennas, there is no additional signaling overhead since the acknowledgment messages ACK are generally sent anyway, regardless of the method according to the invention.
- the described use of the acknowledgment messages ACK makes it possible to determine the optimal antennas after each transmission of a message confirmed by the mobile station MS. This results in a frequent dispatch of. Messages to the MobilStation MS for continuous use of the procedure.
- FIG. 4 shows schematically the structure of the control device
- the controller APS1 receives the messages INFORM or the messages received from network-side antennas from network-side antennas via the means RECEIVE. After the evaluation of the messages INFORM in the means DECIDE, the controller APS1 determines via which antennas in the following a message transmission to a mobile station is to take place.
- the INSTRUCT means that the appropriate antennas, which have the means DECIDE, are informed that they should send a message to the respective mobile station. Accordingly, a network-side device is also constructed for the case in which a message is sent to a mobile station via antennas from different radio cells. to be det.
- the means RECEIVE then receive the messages INFORM or the messages received in the various radio cells not directly from the network-side antennas, but via the respective antennas assigned to the control devices.
- the INSTRUCT means do not communicate directly with the network side antennas, but with the controllers assigned to the respective antennas.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Small-Scale Networks (AREA)
- Radio Transmission System (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04805016A EP1716645B1 (de) | 2004-02-18 | 2004-12-23 | Verfahren zur kommunikation ber eine mehrzahl von netzseiti gen sendeantennen |
KR1020067016766A KR101136233B1 (ko) | 2004-02-18 | 2004-12-23 | 다수의 네트워크측 전송 안테나들을 이용한 통신 방법 |
CN2004800418479A CN1918816B (zh) | 2004-02-18 | 2004-12-23 | 通过多个网络侧发射天线进行通信的方法 |
PL04805016T PL1716645T3 (pl) | 2004-02-18 | 2004-12-23 | Sposób komunikacji poprzez wiele sieciowych anten nadawczych |
DE502004004322T DE502004004322D1 (de) | 2004-02-18 | 2004-12-23 | Verfahren zur kommunikation ber eine mehrzahl von netzseiti gen sendeantennen |
US10/589,888 US20070173243A1 (en) | 2004-02-18 | 2004-12-23 | Method for communicating by means of a plurality of network-side transmission antennas |
JP2006553466A JP2007523552A (ja) | 2004-02-18 | 2004-12-23 | 多数のネットワーク側送信アンテナを介する通信方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04003631.1 | 2004-02-18 | ||
EP04003631A EP1566896A1 (de) | 2004-02-18 | 2004-02-18 | Verfahren zur Kommunikation über eine Mehrzahl von netzseitigen Sendeantennen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005091524A1 true WO2005091524A1 (de) | 2005-09-29 |
Family
ID=34707307
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2004/053686 WO2005091524A1 (de) | 2004-02-18 | 2004-12-23 | Verfahren zur kommunikation über eine mehrzahl von netzseitigen sendeantennen |
Country Status (9)
Country | Link |
---|---|
US (1) | US20070173243A1 (de) |
EP (2) | EP1566896A1 (de) |
JP (1) | JP2007523552A (de) |
KR (1) | KR101136233B1 (de) |
CN (1) | CN1918816B (de) |
AT (1) | ATE367017T1 (de) |
DE (1) | DE502004004322D1 (de) |
PL (1) | PL1716645T3 (de) |
WO (1) | WO2005091524A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100856520B1 (ko) * | 2007-02-21 | 2008-09-04 | 삼성전자주식회사 | 와이맥스 이동통신 시스템에서 핸드오버를 수행하기 위한시스템 및 방법 |
CN101843132A (zh) * | 2007-10-30 | 2010-09-22 | Lm爱立信电话有限公司 | 分布式天线*** |
DE102016105620A1 (de) | 2015-04-27 | 2016-10-27 | Intel Corporation | Softwaredefiniertes zellulares System mit verteilten Antennen |
US10448282B2 (en) * | 2015-04-27 | 2019-10-15 | Intel Corporation | Software defined cellular system with distributed antennas |
WO2019027219A1 (ko) * | 2017-08-02 | 2019-02-07 | 엘지전자 주식회사 | 무선 통신 시스템에서 신호를 측정 및 보고하는 방법 및 이를 위한 장치 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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GB2332122A (en) * | 1997-12-05 | 1999-06-09 | Motorola Ltd | Transmitting a downlink signal in different directions at different times |
WO2001018991A1 (en) * | 1999-09-08 | 2001-03-15 | Motorola Inc. | Link selection in a communication system |
US6320898B1 (en) * | 1998-11-30 | 2001-11-20 | Nortel Networks Limited | CDMA pseudo-smart antenna selection |
WO2002027972A2 (en) * | 2000-09-29 | 2002-04-04 | Arraycomm, Inc. | Downlink transmission in a wireless data communication system having a base station with a smart antenna system |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6097969A (en) * | 1997-12-31 | 2000-08-01 | Weblink Wireless, Inc, | System for scheduling reverse-channel messages in narrowband communications systems and methods of operation |
JP2002185372A (ja) * | 2000-12-15 | 2002-06-28 | Matsushita Electric Ind Co Ltd | アンテナ切換機能を有する携帯無線装置 |
JP2003116162A (ja) * | 2001-10-05 | 2003-04-18 | Toshiba Corp | 移動通信端末装置及びシステム選択方法 |
KR100886534B1 (ko) * | 2002-03-27 | 2009-03-02 | 삼성전자주식회사 | 코드 분할 다중 접속 통신 시스템에서 시공간 송신 다이버시티 방식을 이용한 채널 신호 수신 장치 및 방법 |
US7535846B2 (en) * | 2002-05-21 | 2009-05-19 | Samsung Electronics Co., Ltd | Method for handling inter-RAT measurement and report in a dual-mode user equipment |
-
2004
- 2004-02-18 EP EP04003631A patent/EP1566896A1/de not_active Withdrawn
- 2004-12-23 US US10/589,888 patent/US20070173243A1/en not_active Abandoned
- 2004-12-23 CN CN2004800418479A patent/CN1918816B/zh not_active Expired - Fee Related
- 2004-12-23 AT AT04805016T patent/ATE367017T1/de not_active IP Right Cessation
- 2004-12-23 PL PL04805016T patent/PL1716645T3/pl unknown
- 2004-12-23 KR KR1020067016766A patent/KR101136233B1/ko active IP Right Grant
- 2004-12-23 JP JP2006553466A patent/JP2007523552A/ja active Pending
- 2004-12-23 DE DE502004004322T patent/DE502004004322D1/de not_active Expired - Fee Related
- 2004-12-23 WO PCT/EP2004/053686 patent/WO2005091524A1/de active IP Right Grant
- 2004-12-23 EP EP04805016A patent/EP1716645B1/de not_active Not-in-force
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2332122A (en) * | 1997-12-05 | 1999-06-09 | Motorola Ltd | Transmitting a downlink signal in different directions at different times |
US6320898B1 (en) * | 1998-11-30 | 2001-11-20 | Nortel Networks Limited | CDMA pseudo-smart antenna selection |
WO2001018991A1 (en) * | 1999-09-08 | 2001-03-15 | Motorola Inc. | Link selection in a communication system |
WO2002027972A2 (en) * | 2000-09-29 | 2002-04-04 | Arraycomm, Inc. | Downlink transmission in a wireless data communication system having a base station with a smart antenna system |
Also Published As
Publication number | Publication date |
---|---|
KR101136233B1 (ko) | 2012-04-17 |
EP1716645A1 (de) | 2006-11-02 |
US20070173243A1 (en) | 2007-07-26 |
KR20060133586A (ko) | 2006-12-26 |
EP1566896A1 (de) | 2005-08-24 |
JP2007523552A (ja) | 2007-08-16 |
ATE367017T1 (de) | 2007-08-15 |
DE502004004322D1 (de) | 2007-08-23 |
PL1716645T3 (pl) | 2007-11-30 |
EP1716645B1 (de) | 2007-07-11 |
CN1918816B (zh) | 2012-07-18 |
CN1918816A (zh) | 2007-02-21 |
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