Abstract: An interface, apparatus, and method are described for communication between a radio control (REC) node and first and second radio equipment (RE) nodes in a radio base station that transceives information over radio interface using multiple antenna carriers. The REC node is separate from and coupled to the first RE node by a first transmission link, and the second RE node coupled to the first RE by a second transmission link. Both control information and user information intended for communication between the REC node and the first RE node and the REC and the second RE node are conveyed over the first transmission link. The first RE node also conveys information between the REC and second RE node. Many advantageous features are described.
Type:
Grant
Filed:
October 12, 2005
Date of Patent:
December 9, 2014
Assignees:
Telefonaktiebolaget LM Ericsson (publ), NEC Corporation, Huawei Technologies Co., Ltd., SIEMENS AG, Nortel Networks S.A.
Inventors:
Torbjöm Aarflot, Jacob Osterling, Thomas Ostman, Armin Splett, Hans Kröner, Peter Merz, Bernd Hassler, Patrick Lagrange, Eric Georgeaux, Toshifumi Sato, Hizuru Nawata, Kenichiro Yagawa, Yang Ganghua, Lan Haiqing, Lin Zhibin, Rolf Kramer
Abstract: A radiocommunication infrastructure includes a core network comprising switches and subscriber management means and an access network comprising a plurality of base stations capable of communicating by radio with the mobile stations and base station control means. Messages pertaining to services of an idle mode type are: broadcast by one or more of the base stations to be received by mobile stations in idle mode; and/or transmitted by the base station towards at least one mobile station in active mode, for which the base station control means store radio link management information, if said management information includes references relating to the services to which the service messages pertain. These references are received by the control means during a setup procedure which has caused the mobile station to enter the active mode.
Abstract: For processing samples of a signal received via a channel represented by an impulse response of W?1 coefficients, the method comprises: determining the W roots of the Z-transform of the channel impulse response; producing an intermediate signal by equalizing the received signal by a zero-forcing method or the like based on an impulse response whose Z-transform is a Z?1 polynomial of degree W-p having as roots those of the W roots which are furthest from the unit circle of the complex plane; and then obtaining estimations of the transmitted signal symbols by applying a Viterbi-type equalization method or the like based on an impulse response whose Z-transform is a Z?1 polynomial of degree p having as roots those of the W roots which are nearest to the unit circle.
Type:
Grant
Filed:
September 2, 1999
Date of Patent:
February 1, 2005
Assignee:
Nortel Networks S.A.
Inventors:
Jean-Louis Dornstetter, Nidham Ben Rached, Corinne Bonhomme
Abstract: A circular buffer for use in a telecommunications system is described as well as a method of operating the same in which data is protected during wraparound procedures. In the operation of the circular buffer at least four reference values are stored to enable address calculations: a first reference value representative of a begin address of the circular buffer; a second reference value representative of an end address of the circular buffer; a third reference value representative of a current write address of the circular buffer; and a fourth reference value representative of a current read address of the circular buffer. The cyclic state of the buffer is also monitored in order to protect the data after a wraparound or when the buffer is full. The buffer is able to accommodate multirate data arrival.
Abstract: The antenna comprises several primary sources (6A-6C) fed independently and arranged to have different radiation characteristics. These primary sources are placed in a first medium (7A-7C) so as to be spatially decoupled. A second medium (8A-8C), of a characteristic impedance substantially lower than the first medium covers the first medium. Each primary source has a direction of focus (A-C) perpendicular to the interface between the first and second media, along which the distance (d1) between said primary source and said interface is &lgr;1.(2p1−1)/4 and the second medium has a thickness (e2) equal to &lgr;2.(2p1−1)/4, where &lgr;1 and &lgr;2 denote the wavelengths radiated by said primary source in the first and second media, respectively, and p1 and p2 are integers.