Extended range concentric cell base station
AssigneeLucent Technologies Inc.
InventorsFrances Jiang, Wen-Yi Kuo
Life of this patent
Estimating the term…
Abstract
The present invention is a extended range concentric cell base station and a method for extending a cell size or access range without incurring ASIC correlator re-design. This is accomplished with a concentric cell base station design that incorporates multiple timing protocols. The concentric base station has associated a micro cell and a macro cell, wherein the micro and macro cells use a different timing protocol that will cause signals transmitted by mobiles within their respective cells to be received within the confines of search windows associated with the timing protocols.
Claims11
A method for detecting a mobile-telephone signal comprising the steps of:
- transmitting a base station signal using a first frequency at a first frame boundary;
- transmitting a base station signal using a second frequency at a time r relative to a second frame boundary;
- receiving a mobile-telephone signal transmitted on the first frequency within a first search window beginning at a third frame boundary and ending at a time p1 after the third frame boundary, wherein p1 represents a time interval corresponding to a bit limitation for a first correlator;
- and
- receiving a mobile-telephone signal transmitted on the second frequency within a second search window beginning at a time q after a time r relative to a fourth frame boundary and ending at a time q+p2 after the time r relative to the fourth frame boundary, wherein q is a timing advance value and p2 represents a time interval corresponding to a bit limitation for a second correlator.
A base station comprising:
- a first radio for transmitting base station signals using a first frequency at frame boundaries, the first radio having a first correlator for detecting mobile-telephone signals transmitted on the first frequency, the first correlator being configured to search for the first frequency mobile-telephone signals during first time intervals beginning at the frame boundaries and ending a time p1 after the frame boundaries, wherein p1 represents a time interval corresponding to a bit limitation for the first correlator;
- and
- a second radio for transmitting base station signals using a second frequency at a time r relative to the frame boundaries, the second radio having a second correlator for detecting mobile-telephone signals transmitted on the second frequency, the second correlator being configured to search for the second frequency mobile-telephone signals during second time intervals beginning at a time q after the time r and ending a time q+p2 after the time r, wherein p2 represents a time interval corresponding to a bit limitation for the second correlator.
Dependencies are inferred from the claim text.