公开(公告)号：EP2214426A4

公开(公告)日：2016-06-22

申请号：EP08790478

申请日：2008-08-22

Applicant: PANASONIC IP CORP AMERICA

Inventor： AOYAMA TAKAHISA ,  HIRANO JUN ,  ARAMAKI TAKASHI ,  FUKUI AKITO

IPC: H04W4/00

CPC classification number: H04W48/20

Abstract: A cell selection system is for selecting a cell to be used for communications by a mobile terminal (1) in a network having a cell of a mobile phone network and a plurality of WLAN cells included in the cell. Broadcast information including cell selection information is transmitted in the cell of the mobile phone network. This cell selection information has cell change judgment parameters whose patterns are less than the WLAN cells. The mobile terminal (1) reads the cell selection information from the broadcast information of the mobile phone network, uses broadcast information of a WLAN to determine a parameter to be used for judgment on cell selection to the WLAN cell concerned, and judges by the determined parameter whether the cell can be changed or not. A cell reselection system is provided which can restrict the amount of data in the broadcast information even with an increase in the number of WLAN cells included in the cell of the mobile phone network.

公开(公告)号：EP2293624A4

公开(公告)日：2015-09-30

申请号：EP09769882

申请日：2009-06-22

Applicant: PANASONIC IP CORP AMERICA

Inventor： HIRANO JUN ,  ARAMAKI TAKASHI ,  IKEDA SHINKICHI ,  AOYAMA TAKAHISA

IPC: H04W36/14 ,  H04L29/08 ,  H04W12/06 ,  H04W36/00

CPC classification number: H04W12/06 ,  H04W36/0016

Abstract: Disclosed is a technique to enable a session handover between devices with different key generation functions in an authentication protocol. According to the technique, when a session where a UE (200) receives contents from a contents server (700) is to be handed over to a target node (300), the UE firstly transfers information (session HO information) necessary to the session handover to the target node (Step S1001). The target node performs authentication processing with an authentication server (600) of the network to which the UE is connected and notifies the authentication server of the session HO information transferred from the UE (Step S1003). The authentication server performs authentication for the session handover based on the session HO information, and when the authentication succeeds, the session is handed over from the contents server to the target node, and the contents are distributed to the target node (Step S1005).

公开(公告)号：EP2312874A4

公开(公告)日：2015-01-14

申请号：EP09804708

申请日：2009-08-03

Applicant: PANASONIC IP CORP AMERICA

Inventor： NAKAO SEIGO ,  SUZUKI HIDETOSHI ,  NISHIO AKIHIKO ,  AOYAMA TAKAHISA ,  HIRAMATSU KATSUHIKO

IPC: H04W8/22 ,  H04J1/00 ,  H04J11/00 ,  H04L5/00 ,  H04W72/04

CPC classification number: H04W56/001 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0053 ,  H04L27/2601 ,  H04L27/2647 ,  H04W72/0406 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/048 ,  H04W72/0493

Abstract: Provided are a base station, a terminal, a band allocation method, and a downlink data communication method in which a mapping method for synchronization signals and report signals is implemented with high resource usage efficiency when a first system in which an independent single communication is allocated to a unit band co-exists with a second system in which a plurality of unit bands can be allocated to a single communication. In a base station (200), an OFDM signal generation unit (225) maps primary synchronization channel (P-SCH), secondary synchronization channel (S-SCH), primary broadcast channel (P-BCH), and dynamic broadcast channel (D-BCH), which can be decoded by both an LTE terminal and an LTE+ terminal, to some of a plurality of unit bands available to the station itself. The OFDM signal generation unit (225) also maps D-BCH+, which can be decoded only by an LTE+ terminal, to all of the plurality of unit bands to produce a multiplexed transmission signal. When the terminal which has transmitted terminal capability information is an LTE+ terminal, a control unit (265) transmits a band movement indication which indicates changes in the reception band to that terminal.

公开(公告)号：EP2355605A4

公开(公告)日：2016-08-10

申请号：EP09830168

申请日：2009-11-30

Applicant: PANASONIC IP CORP AMERICA

Inventor： NAKAO SEIGO ,  IMAMURA DAICHI ,  AOYAMA TAKAHISA

IPC: H04W72/04

CPC classification number: H04L5/0053 ,  H04H20/08 ,  H04J11/00 ,  H04J11/0076 ,  H04L1/0038 ,  H04L5/001 ,  H04L5/0044 ,  H04L5/0094 ,  H04W72/0413 ,  H04W72/042

Abstract: A radio terminal, radio base station, channel signal forming method and channel signal receiving method wherein when an upstream unit band and a plurality of downstream unit bands associated therewith are used to perform communications, the quality of downstream assignment control information can be prevented from being degraded. In a base station (100), the PDCCH signals including upstream assignment control information are limited to ones that are placed in some of the downstream unit bands. This can reduce the probability of performance of zero padding to downstream assignment control information having greater importance. Also in the base station (100), the PDCCH signals of the downstream unit bands other than the basic unit band include only downstream resource assignment information. For this reason, in the individual regions of the downstream unit bands other than the basic unit band, the bandwidth of the downstream unit bands is always used as a reference of size adjustment and hence requires no information size adjustment. As a result, there is no need of performing zero padding to the downstream assignment control information, so that the quality of downstream assignment control information can be prevented from being degraded.

公开(公告)号：EP2448322A4

公开(公告)日：2016-05-11

申请号：EP10791788

申请日：2010-05-25

Applicant: PANASONIC IP CORP AMERICA

Inventor： AOYAMA TAKAHISA ,  HIRANO JUN ,  TAMURA TAKASHI

IPC: H04W36/00 ,  H04L5/00 ,  H04W36/30

CPC classification number: H04L5/001 ,  H04L5/0053 ,  H04L5/0091 ,  H04L47/29 ,  H04W24/10 ,  H04W28/0236 ,  H04W36/0083

Abstract: A communication terminal is capable of simultaneously communicating through a plurality of carriers by carrier aggregation, and the communication terminal comprises: a quality measurement unit for measuring the reception quality of a radio wave transmitted through a plurality of carriers from a base station of a connected cell to obtain a measured value; a primary carrier storage unit storing information specifying a primary carrier chosen from the plurality of carriers; a comparator for comparing a measured value of the primary carrier measured by the quality measurement unit to a threshold value; and a cell search unit for searching for another cell when the measured value of the primary carrier is less than or equal to the threshold value. Consequently, a search threshold value for carrier aggregation can be appropriately determined to perform a cell search and a quality measurement.