Title:
ブロードキャスト・ベースのデータ配信環境におけるデータ・ソース・ハンドオフ
Document Type and Number:
Japanese Patent JP4608211
Kind Code:
B2
Abstract:
A method, system, and apparatus for handing-off data receivers in a broadcast-based data dissemination environment. Data receiver hand-off is carried out between data sources in different data cells broadcasting information of the same category. Furthermore, data cell ranges are based on geographic regions rather than signal strength coverage. Generally, the hand-off process involves acquiring the current receiver location of the data receiver and comparing the receiver location with a current data cell range. If the current receiver location is outside the current data cell range, a hand-off controller searches for a new data source encompassing the current receiver location coordinates and having an associated data topic matching the current topic. Once a new data source is found, the hand-off controller subscribes the data receiver to the new data source.
Inventors:
Cohen, norman, h
Prakaya Star, Apra Theme
One, Luke
Ye Danny, El
Prakaya Star, Apra Theme
One, Luke
Ye Danny, El
Application Number:
JP2003502969A
Publication Date:
January 12, 2011
Filing Date:
December 04, 2001
Export Citation:
Assignee:
INTERNATIONAL BUSINESS MASCHINES CORPORATION
International Classes:
H04H20/57; H04B1/16; H04B7/26; H04H60/51; H04W4/08; H04W36/08; H04W36/32; H04L12/28
Domestic Patent References:
| JP5183391A | ||||
| JP4227127A | ||||
| JP200082196A | ||||
| JP2000165826A | ||||
| JP2001111503A |
Attorney, Agent or Firm:
Takeshi Ueno
Yoshihiro City
Hiroshi Sakaguchi
Yoshihiro City
Hiroshi Sakaguchi