Title:
多搬送波無線通信システムにおいてセクタ間及び/又はセル間のハンドオフを改善する方法及び装置
Document Type and Number:
Japanese Patent JP5496778
Kind Code:
B2
Abstract:
A wireless communications system, e.g., an OFDM system, uses a plurality of carrier frequencies each with an associated frequency band. A base station sector transmitter in the system transmits ordinary signaling, e.g., user data, in its own assigned band. In addition the sector base station transmitter periodically transmits beacon signals into its own frequency band and the frequency bands used by adjacent sector transmitters for their ordinary signaling. Beacon signals, being short duration high power signals with sector transmission power concentrated on one or a few tones, are easily detectable. Each beacon signal may be identified as to the source base station sector transmitter, e.g., based on tone. A mobile node, tuned to a single carrier band, receives a plurality of beacon signals, identifies the sources of the received beacons, compares the received strength of the beacons, and makes handoff decisions, without having to switch carrier band.
Inventors:
Rajiv Laroya
Frank A. Lane
Frank A. Lane
Application Number:
JP2010119533A
Publication Date:
May 21, 2014
Filing Date:
May 25, 2010
Export Citation:
Assignee:
QUALCOMM INCORPORATED
International Classes:
H04W48/10; H04B1/38; H04W36/00; H04W48/16; H04W36/08; H04L
Domestic Patent References:
| JP6348925A | ||||
| JP2002118881A | ||||
| JP2000244392A | ||||
| JP1075481A | ||||
| JP2000286822A |
Attorney, Agent or Firm:
Kurata Masatoshi
Yoshihiro Fukuhara
Makoto Nakamura
Nobuhisa Nogawa
Toshio Shirane
Takashi Mine
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Morisezo Iseki
Takao Ako
Tadashi Inoue
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori
Yoshihiro Fukuhara
Makoto Nakamura
Nobuhisa Nogawa
Toshio Shirane
Takashi Mine
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Morisezo Iseki
Takao Ako
Tadashi Inoue
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori