Source: http://www.google.com/patents/US8189513?dq=6437692
Timestamp: 2015-05-30 11:47:03
Document Index: 559466723

Matched Legal Cases: ['art 73', 'art 73', 'art 77', 'art 76', 'art 73', 'art 77', 'art 76', 'art 77', 'art 52', 'art 55', 'art 55', 'art 54', 'art 52', 'art 53', 'art 55', 'art 55', 'art 52', 'art 52', 'art 52', 'art 53', 'art 53', 'art 55', 'art 55', 'art 55', 'art 53', 'Application No. 2003']

Patent US8189513 - Radio base station apparatus and base station controller - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsThe invention provides a radio base station apparatus forming a wireless zone in a mobile communication system and to a base station controller performing channel control over a terminal visiting a wireless zone. The radio base station apparatus has an identifying section identifying a particular radio...http://www.google.com/patents/US8189513?utm_source=gb-gplus-sharePatent US8189513 - Radio base station apparatus and base station controllerAdvanced Patent SearchPublication numberUS8189513 B2Publication typeGrantApplication numberUS 13/036,299Publication dateMay 29, 2012Filing dateFeb 28, 2011Priority dateMar 25, 2003Also published asUS7684369, US7924790, US20040192390, US20100177729, US20110170486Publication number036299, 13036299, US 8189513 B2, US 8189513B2, US-B2-8189513, US8189513 B2, US8189513B2InventorsYoshiharu TajimaOriginal AssigneeFujitsu LimitedExport CitationBiBTeX, EndNote, RefManPatent Citations (54), Non-Patent Citations (11), Classifications (15) External Links: USPTO, USPTO Assignment, EspacenetRadio base station apparatus and base station controller
US 8189513 B2Abstract
transmitting data and identification information allotted to a radio terminal from a first radio base station in a diversity handover; and
transmitting the data and the same identification information to the radio terminal from a second radio base station when the radio terminal moves from an area of the first radio base station to an area of the second radio base station in the diversity handover.
2. The radio communication method according to claim 1, wherein
the first radio base station transmits primary information and the second radio base station transmits secondary information, the primary information and the secondary information including same content information, and
the radio terminal receives the primary information and the secondary information.
3. The radio communication method according to claim 1, wherein the identification information is an IP address.
4. A radio system performing radio communication with a radio terminal comprising:
a first transmitting unit transmitting data and identification information allotted to the radio terminal from a first radio base station in a diversity handover; and
a second transmitting unit transmitting the data and the same identification information to the radio terminal from a second radio base station when the radio terminal moves from an area of the first radio base station to an area of the second radio base station in the diversity handover.
5. The radio system according to claim 4, wherein the identification information is an IP address.
6. The radio system according to claim 4, wherein
the radio terminal receives the primary information and the secondary information. Description
Antenna 71-1 Antenna duplexer 72-1 that is connected to the feeding point of the antenna 71-1. Receiving part 73-1 that is connected to the reception output of the antenna duplexer 72-1. Router 74-1 that is connected to the one end of an inter-office link provided between the radio base station 70-1 and an exchange (not shown), and to whose incoming route the output of the receiving part 73-1 is connected. Transmitting part 77-1 that is connected in series to the outgoing route of the router 74-1 and whose output is connected to the transmission input of the antenna duplexer 72-1. Controlling part 76-1 having input/output ports that are connected to the control terminals of the receiving part 73-1, the router 74-1, and the transmitting part 77-1, respectively, and a communication port that is connected to the one end of the above-mentioned communication link 83-1. The radio base station 70-2 has the same configuration as the radio base station 70-1. Therefore, the components of the radio base station 70-2 will be given the same reference symbols as those of the radio base station 70-1 except that the former will have a suffix “2” instead of a suffix “1,” and will not be described or shown in the drawings.
Determines a wireless zone (hereinafter referred to as “transition destination wireless zone”; for the sake of simplicity, it is assumed to be the wireless zone 81-2) to which the terminal 82 should make a transition. Determines a radio channel (hereinafter referred to as “transition destination radio channel”) that can be assigned by the radio base station 70-2 which forms the wireless zone 81-2 and that is not assigned to any terminal or call. Sends, to the radio base station 70-2, via the communication link 83-2, a transmission start request for starting a transmission on the transition destination radio channel (indicated by symbol (c) in FIG. 7). Sends, to the radio base station 70-1, via the communication link 83-1, a handover request confirmation that the terminal 82 should make a transition to the above transition destination radio channel (indicated by symbol (d) in FIG. 7). During the above processing, the base station controlling station 84 may cooperate with the radio base station 70-2 in any form.
In the radio base station 70-1, when recognizing the handover request confirmation, the controlling part 76-1 sends the handover request confirmation to the terminal 82 via the transmitting part 77-1, the antenna duplexer 72-1, and the antenna 71-1 (indicated by symbol (e) in FIG. 7).
Performs a series of operations (hereinafter referred to simply as “radio channel establishment”) including synchronization establishment in the transition destination radio channel and a continuity check by cooperating, when necessary, with the radio base station 70-2 that forms the transition destination wireless zone (indicated by symbol (f) in FIG. 7). When the radio channel establishment has completed normally, sends to the radio base station 70-2 a message called “binding update” which is an assignment request for a second IP address that complies with the transition destination wireless zone and is to replace the above-mentioned first IP address (indicated by symbol (g) in FIG. 7). The radio base station 70-2 sends the binding update message to the base station controlling station 84 via the communication link 83-2.
Secures an IP address (for the sake of simplicity, it is assumed here to be “192.168.1.2”) as a second IP address by itself or in cooperation with the radio base station 70-2. The IP address is in such a value range that the radio base station 70-2 is allottable and is not assigned to any terminal or call (indicated by symbol (i) in FIG. 7). In the following description, for the sake of simplicity, it is assumed that the host address portions of the first IP address and the second IP address are defined under different subnet masks corresponding to the respective radio base stations 70-1 and 70-2 (wireless zones 81-1 and 81-2) so as to secure compatibility with the known mobile-IP that does not conform to the mobile communication and the radio transmission sufficiently. Allows a relationship between the terminal 82 (or the transition destination channel assigned to the terminal 82) and the second IP address to be reflected in routing information held in the router 74-2 (indicated by symbol (j) in FIG. 7). Sends a message “binding update confirmation” containing the second IP address to the terminal 82 via the communication link 83-2 and the radio base station 70-2 (indicated by symbol (k) in FIG. 7). The terminal 82 completes the handover by using, as one of the following, the second IP address contained in the binding update confirmation as an IP address that has been assigned in place of the first IP address (indicated by symbol (m) in FIG. 7):
JP-A-2001-45534 (claims 4, 6, 8, and 9, paragraphs 0013, 0015, 0018, 0023, 0034, 0035, 0040-0042, 0044-0046, 0050, 0056-0058, 0060, 0063-0065, and 0067) JP-A-2001-189954 (abstract, paragraph 0031) JP-A-10-117167 (abstract, claim 1) JP-A-11-122672 (claims 1-16) JP-A-10-190633 (claim 1, paragraph 0001) JP-T-10-509287 (abstract; the term “JP-T” as used herein means a published Japanese translation of a PCT patent application) JP-A-2000-286898 (abstract, claim 1, paragraphs 0003 and 0016) Incidentally, in the above prior art examples, a handover is attained by executing the second processing (indicated by symbols (g)-(m) in FIG. 7) for assignment of a second IP address that is to replace a first IP address after completion of the first processing (indicated by symbols (a)-(f) in FIG. 7) for realizing update of a physical radio channel.
The above objects are attained by a radio base station apparatus which forwards a signal delivered via a physical layer of a network to radio base stations that form adjacent wireless zones when the local station is the above-mentioned particular radio base station. The radio base station apparatus delivers the signal, which have been delivered from the network in the physical layer and is to be transmitted to the terminal from the local station (i.e., transmitting section), to the radio base stations in the baseband, intermediate frequency band, or radio frequency band.
Determines a wireless zone (hereinafter referred to as “joint wireless zone”; for the sake of simplicity, it is assumed to be the wireless zone 81-2) that the terminal 82 should use jointly for the diversity handover. Determines a radio channel (hereinafter referred to as “joint radio channel”) that can be assigned by the radio base station 50-2 forming the wireless zone 81-2 and that is not assigned to any terminal or call. Sends, to the radio base station 50-2, via the communication link 83-2, a transmission start request that a transmission on the joint radio channel should be started (indicated by symbol (c) in FIG. 5). Sends, to the radio base station 50-1, via the communication link 83-1, a handover request confirmation that the terminal 82 can access the downstream link of the joint radio channel (indicated by symbol (d) in FIG. 5). During the above processing, the base station controlling station 84 may cooperate with the radio base station 50-2 in any form.
The receiving part 52-2 generates a baseband signal by despreading a reception wave that has arrived from the terminal 82 (indicated by symbol (1) in FIG. 5) and has been supplied via the antenna 71-2 and the antenna duplexer 72-2 and passes the generated baseband signal (hereinafter referred to as “upstream transfer subject signal”) to the link interface part 55-2 without performing decision decoding or transmission channel decoding on it. The link interface part 55-2 forwards the upstream transfer subject signal to the radio base station 50-1 via the bypass channel (indicated by symbol (2) in FIG. 5). On the other hand, in the radio base station 50-1, the controlling part 54-1 gives the receiving part 52-1, the transmitting part 53-1, and the link interface part 55-1 binary information indicating that the radio base station 50-1 is the above-mentioned particular radio base station.
The link interface part 55-1 passes the above-mentioned upstream transfer subject signal to the receiving part 52-1 (indicated by symbol (3) in FIG. 5). The receiving part 52-1 generates a baseband signal by despreading a reception wave that has arrived from the terminal 82 in parallel with the above-mentioned reception wave and has been supplied via the antenna 71-1 and the antenna duplexer 72-1 (indicated by symbol (4) in FIG. 5) and generates a replacement baseband signal to replace the generated baseband signal by combining the baseband signal and the upstream transfer subject signal (indicated by symbol (5) in FIG. 5). Further, the receiving part 52-1 restores packets indicated by the replacement baseband signal by performing decision decoding and transmission channel decoding on the replacement baseband signal and gives the (sequence of) packets to the router 74-1 (indicated by symbol (6) in FIG. 5). The transmitting part 53-1 generates a transmission wave signal indicating the packets that have been given by the router 74-1 and are to be transmitted to the terminal 82 (indicated by symbol (7) in FIG. 5), and sends the generated transmission wave signal to the terminal 82 via the antenna duplexer 72-1, the antenna 71-1, and the downstream link of the above-mentioned particular radio channel (indicated by symbol (8) in FIG. 5). In generating the transmission wave, the transmitting part 53-1 passes, to the link interface part 55-1, a baseband signal (hereinafter referred to as “downstream transfer subject signal”) that is modulated by the above-mentioned packets and is a subject of spreading that is performed in generating the transmission wave. The link interface part 55-1 forwards the downstream transfer subject signal to the radio base station 50-2 via the bypass channel (indicated by symbol (9) in FIG. 5). In the radio base station 50-2, the link interface part 55-2 and the transmitting part 53-2 performs the following processing in accordance with the logical value of the above-mentioned binary information:
The (sequence of) packets that have been given by the router 74-1 and are to be transmitted to the terminal 82 are directly radio-transmitted from the particular radio base station 50-1 to the terminal 82 and are also forwarded to the radio base station 50-2 being not the particular radio base station as a downstream transfer subject signal. The radio base station 50-2 radio-transmits the downstream transfer subject signal to the terminal 82 in parallel with the above (sequence of) packets.
Determines a new particular radio base station. Regards the new particular radio base station as a transition destination (e.g., corresponds to the radio base station 70-2 in the conventional example) of a hard handover rather than a diversity handover. After completion of radio channel establishment for the transition destination, instructs the new particular radio base station to perform binding update by cooperating with the terminal 82 in the same manner as in the conventional example (indicated by symbols (g)-(m) in FIG. 7). Therefore, this embodiment can prevent a state that continuance of a same radio base station being the particular radio base station from occurrence of a complete call at the terminal 82 to disappearance of the call causes the diversity handover not to properly comply with the above-mentioned zone configurations, channel allocation, frequency allocation, modulation scheme, and multiple access scheme, which lowers the transmission quality and service quality, complicates the processings related to the channel control, and increases the load.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS5101501Nov 7, 1989Mar 31, 1992Qualcomm IncorporatedMethod and system for providing a soft handoff in communications in a cdma cellular telephone systemUS5267261 *Mar 5, 1992Nov 30, 1993Qualcomm IncorporatedMobile station assisted soft handoff in a CDMA cellular communications systemUS5371780 *Jul 28, 1993Dec 6, 1994At&T Corp.Communications resource assignment in a wireless telecommunications systemUS5432843Aug 2, 1993Jul 11, 1995Motorola Inc.Method of performing handoff in a cellular communication systemUS5717688May 12, 1995Feb 10, 1998Netwave Technologies LimitedWireless local area network with roaming indicating multiple communication rangesUS5850503Feb 18, 1997Dec 15, 1998Onken L.L.C.Angled heat tube for use in a fluid storage tankUS6108547Jun 27, 1997Aug 22, 2000Fujitsu LimitedMethod for carrying out soft handoff in mobile communication system, and mobile communication system and base transceiver station for implementing the sameUS6119004 *Sep 25, 1997Sep 12, 2000Matsushita Electric Industrial Co., Ltd.Base station equipment for mobile communicationUS6195705Jun 30, 1998Feb 27, 2001Cisco Technology, Inc.Mobile IP mobility agent standby protocolUS6311066 *Feb 3, 2000Oct 30, 2001Motorola, Inc.Method and apparatus for performing selection and distribution in a communication systemUS6393482Aug 24, 1998May 21, 2002Lucent Technologies Inc.Inter-working function selection system in a networkUS6434134 *Dec 11, 1998Aug 13, 2002Lucent Technologies, Inc.Dynamic address assignment for wireless devices accessing packet-based wired networksUS6470188 *Dec 25, 1997Oct 22, 2002Ntt Mobile Communications Network, Inc.Method for handoverUS6487406Apr 10, 2000Nov 26, 2002Telcordia Technologies, Inc.PCS-to-mobile IP internetworkingUS6535739 *Apr 7, 2000Mar 18, 2003Qualcomm IncorporatedMethod of handoff within a telecommunications system containing digital base stations with different spectral capabilitiesUS6578066Sep 17, 1999Jun 10, 2003Alteon WebsystemsDistributed load-balancing internet serversUS6628632Jul 19, 1999Sep 30, 2003Lucent Technologies Inc.Method and apparatus for permitting direct handoff between base stations in a wireless networkUS6674734Jul 12, 1999Jan 6, 2004Nokia CorporationScheme to relocate H. 323 gatekeeper during a call when endpoint changes its zoneUS6785256Feb 3, 2003Aug 31, 2004Flarion Technologies, Inc.Method for extending mobile IP and AAA to enable integrated support for local access and roaming access connectivityUS6810259Dec 14, 2000Oct 26, 2004Utstarcom Inc.Location update protocolUS6823193 *Feb 28, 2000Nov 23, 2004Telefonaktiebolaget Lm Ericsson (Publ)Downlink transmit power synchronization during diversity communication with a mobile stationUS6965584Feb 27, 2001Nov 15, 2005Telcordia Technologies, Inc.Dynamic forward assignment of internet protocol addresses in wireless networksUS7069050May 21, 2003Jun 27, 2006Nec CorporationAntenna transmission and reception systemUS7162247Apr 17, 2001Jan 9, 2007Toshiba America Research, Inc.Autonomous base station set up and soft handoffUS7418510Sep 5, 2002Aug 26, 2008Mitsubishi Denki Kabushiki KaishaNetwork system dynamically made for a short-distance wireless communication and network structuring methodUS7505433Apr 1, 2005Mar 17, 2009Toshiba America Research, Inc.Autonomous and heterogeneous network discovery and reuseUS7564824May 6, 2003Jul 21, 2009Qualcomm IncorporatedMethods and apparatus for aggregating MIP and AAA messagesUS7630716 *Feb 28, 2007Dec 8, 2009Ntt Docomo, Inc.Method and system for mobile communicationsUS7684369Feb 27, 2004Mar 23, 2010Fujitsu LimitedRadio based station apparatus and base station controllerUS7974584 *Aug 7, 2007Jul 5, 2011Fujitsu LimitedWireless communication systemUS20010018346Dec 27, 2000Aug 30, 2001Ntt Docomo, Inc.Method and apparatus for stabilizing communication in mobile communication systemUS20020131386Jan 26, 2001Sep 19, 2002Docomo Communications Laboratories Usa, Inc.Mobility prediction in wireless, mobile access digital networksUS20020173303May 16, 2001Nov 21, 2002Docomo Communications Laboratories Usa, Inc.Wireless communication systemUS20030016655Jan 29, 2001Jan 23, 2003Docomo Communications Laboratories Usa, Inc.Fast dynamic route establishment in wireless, mobile access digital networks using mobility predictionUS20030117978Dec 20, 2002Jun 26, 2003Hewlett Packard CompanyInter-network transferUS20030193912May 7, 2003Oct 16, 2003O'neill AlanPacket forwarding methods for use in handoffsUS20030224795Jun 16, 2003Dec 4, 2003Bridgeport Networks, Inc.Circuit switched cellular network to internet calling with internet antennasUS20040213181Oct 11, 2001Oct 28, 2004Sandro GrechMethod and system for managing data flow between mobile nodes, access routers and peer nodesUS20050157681 *Mar 11, 2005Jul 21, 2005Yoshiharu TajimaDiversity handover method, control station and mobile terminal device in mobile communicationsUS20050286466May 12, 2005Dec 29, 2005Tagg James PSystem for providing mobile VoIPUS20060007889 *Jul 9, 2004Jan 12, 2006Khan Farooq UCell switching and packet combining in a wireless communication systemUS20060245403Apr 27, 2005Nov 2, 2006Matsushita Electric Industrial Co., Ltd.UPnP mobility extension using session initiation protocolUS20070097917Jan 30, 2006May 3, 2007Institute For Information IndustryMethod for rapidly lnking mobile node and access point in wireless local area networkEP1128704A1Feb 12, 2001Aug 29, 2001Lucent Technologies Inc.System and method for enhancing downlink traffic capacity for a soft hand-offJP2000183945A Title not availableJP2000286898A Title not availableJP2001045534A Title not availableJP2001285917A Title not availableJPH0373627A Title not availableJPH10117165A Title not availableJPH10190633A Title not availableJPH11122672A Title not availableJPS54100206A Title not availableWO1996008908A2Aug 31, 1995Mar 21, 1996D Ridgely BolgianoWireless telephone distribution system with time and space diversity transmission* Cited by examinerNon-Patent CitationsReference1Japanese Office Action issued Sep. 25, 2007 for corresponding Japanese Application No. 2003-082830.2Notice of Allowance with References Cited dated Jan. 21, 2011, from corresponding U.S. Appl. No. 12/698,450.3Notice of Allowance with References Cited dated Nov. 4, 2009, from corresponding U.S. Appl. No. 10/789,749.4U.S. Advisory Action Issued Nov. 19, 2007 for U.S. Appl. No. 10/789,749.5U.S. final Office Action Issued Jul. 18, 2007 for U.S. Appl. No. 10/789,749.6U.S. final Office Action Issued Jun. 29, 2006 for U.S. Appl. No. 10/789,749.7U.S. final Office Action Issued Oct. 24, 2008 for U.S. Appl. No. 10/789,749.8U.S. non-final Office Action Issued Dec. 19, 2005 for U.S. Appl. No. 10/789,749.9U.S. non-final Office Action Issued Feb. 9, 2007 for U.S. Appl. No. 10/789,749.10U.S. non-final Office Action Issued Jun. 4, 2009 for U.S. Appl. No. 10/789,749.11U.S. non-final Office Action Issued Mar. 7, 2008 for U.S. Appl. No. 10/789,749.Classifications U.S. Classification370/328, 370/331, 455/436, 370/335, 455/561, 370/329, 455/442International ClassificationH04W4/00, H04W36/18, H04B1/38, H04W88/08Cooperative ClassificationH04W36/18, H04W88/08European ClassificationH04W36/18, H04W88/08RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services