Source: http://www.google.com/patents/US7924790?ie=ISO-8859-1&dq=5,241,671
Timestamp: 2014-09-23 13:04:50
Document Index: 617467289

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

Patent US7924790 - Radio base station apparatus and base station controller - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign in<nobr>Advanced Patent Search</nobr>PatentsThe 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/US7924790?utm_source=gb-gplus-sharePatent US7924790 - Radio base station apparatus and base station controllerAdvanced Patent SearchPublication numberUS7924790 B2Publication typeGrantApplication numberUS 12/698,450Publication dateApr 12, 2011Filing dateFeb 2, 2010Priority dateMar 25, 2003Also published asUS7684369, US8189513, US20040192390, US20100177729, US20110170486Publication number12698450, 698450, US 7924790 B2, US 7924790B2, US-B2-7924790, US7924790 B2, US7924790B2InventorsYoshiharu TajimaOriginal AssigneeFujitsu LimitedExport CitationBiBTeX, EndNote, RefManPatent Citations (43), Non-Patent Citations (9), Classifications (13) External Links: USPTO, USPTO Assignment, EspacenetRadio base station apparatus and base station controllerUS 7924790 B2Abstract The 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 base station that is to maintain a radio channel between the radio base station apparatus and a terminal during a process of diversity handover, a network interface section delivering a signal to a network if a local station is not the particular radio base station, and an inter-office interface section delivering to the network a composite wave of the signal and a signal having arrived and forwarded from the terminal via the radio channel at a radio base station forming a wireless zone adjacent to a wireless zone formed by the local station if the local station is the particular radio base station.
transmitting data and identification information allotted to a radio terminal to the radio terminal from a first and a second radio base stations in a diversity transmission manner; and
transmitting the data and a renewal identification information different from the identification information to the radio terminal from a third base station when the radio terminal moves from an area of the first and second base station to an area of a third base station, wherein
the radio terminal in diversity receives the primary information and the secondary information.
2. A radio communication method comprising:
the third base station belongs to a mobile zone which is different from a mobile zone which the first and second base stations using the diversity transmission manner belong to.
4. The radio communication method according to claim 1, wherein the renewed identification information is different from the identification information before the renewal.
the third radio base station transmits information without forming diversity transmission relation with the first radio base station for transmission of the information.
6. The radio communication method according to claim 5, wherein the identification information and the renewed identification information are unique.
7. 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 to the radio terminal from a first and a second radio base stations in a diversity transmission manner; and
a second transmitting unit transmitting the data and a renewal identification information different from the identification information to the radio terminal from a third base station when the radio terminal moves from an area of the first and second base station to an area of a third base station.
8. A radio system performing radio communication with a radio terminal comprising:
a second radio base station maintaining identification information allotted to the radio terminal for receiving data without renewing the identification information when the radio terminal moves from an area of a first radio base station to an area of the second radio base station, and transmitting data and the identification information to the radio terminal from the first and second radio base stations in a diversity transmission manner; and
a third base station renewing the identification information when the radio terminal moves to an area of the third base station, and transmitting data and the renewed identification information to the radio terminal from the third radio base station, wherein
9. The radio system according to claim 7, wherein the identification information is an IP address.
10. The radio system according to claim 7, wherein the renewed identification information is different from the identification information before the renewal.
11. The radio system according to claim 7, 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,
the radio terminal in diversity receives the primary information and the secondary information, and
12. The radio system according to claim 11, wherein the identification information and the renewed identification information are unique.
13. A radio terminal performing radio communication with radio base stations comprising:
14. A radio terminal performing radio communication with radio base stations comprising:
the third base station belongs to a mobile zone which is different from a mobile zone which the first and station base stations using the diversity transmission manner belong to.
15. The radio terminal according to claim 13, wherein the identification information is an IP address.
16. The radio terminal according to claim 13, wherein the renewed identification information is different from the identification information before the renewal.
17. The radio terminal according to claim 13, wherein
18. The radio terminal according to claim 17, wherein the identification information and the renewed identification information are unique. 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.
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 arriving from a terminal in a wireless zone formed by the local station to a particular one of radio base stations that form wireless zones adjacent to the wireless zone formed by the local station, when the local station is not the above-mentioned particular radio base station.
The radio base station apparatus according to the invention combines a signal arriving thereat from the terminal via a radio channel and signals arriving in parallel directly at the particular radio base station from the terminal, and delivers the combined signals to a network in the baseband, intermediate frequency band, or radio frequency band.
In an eighth radio base station apparatus according to the invention, the inter-office link securing section 31 A secures links to be used for transfer of the signals between the local station and the radio base stations 26-1 to 26-N according to a procedure of a channel control for assigning the radio channel to the terminal 23 or through cooperation with the base station controller 30A performing the channel control. The inter-office interface section 27A captures signals that are forwarded via the links secured by the inter-office link securing section 31A.
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 receiving part 52-1, the transmitting part 53-1, and the link interface part 55-1 perform the following processing in accordance with the logical value of the binary information:
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