United States Patent 9,913,206
Somasundaram , et al. March 6, 2018
Method and apparatus for searching for closed subscriber group cells
Abstract
A method and apparatus for searching for closed subscriber group (CSG) cells are described. A wireless transmit/receive unit (WTRU) transmits, to a network of CSG cells, a measurement/cell-search gap request message including a cause value having at least one bit that indicates whether the request message was transmitted due to a manual cell search command or a WTRU autonomous determination. The WTRU receives a measurement/cell-search gap allocation message from the network in response to the measurement/cell-search request message. The WTRU also may determine whether it has a discontinuous reception (DRX) gap that is long enough to read a master information block (MIB) and a system information block (SIB) of a neighboring CSG cell. If the DRX gap is not long enough, the WTRU may transmit a measurement/cell-search gap request message to the network, or autonomously tune away from a cell currently serving the WTRU to read the MIB and SIB.
Inventors:
Somasundaram; Shankar (Deer Park, NY), Mukherjee; Rajat P. (Stanford, CA), Sammour; Mohammed (Alrabieh, JO), Gauvreau; Jean-Louis (La Prairie, CA)
Applicant:
Name
City
State
Country
Type
Somasundaram; Shankar
Mukherjee; Rajat P.
Sammour; Mohammed
Gauvreau; Jean-Louis
Deer Park
Stanford
Alrabieh
La Prairie
NY
CA
N/A
N/A
US
US
JO
CA
Assignee:
INTERDIGITAL PATENT HOLDINGS, INC. (Wilmington, DE)
Family ID:
1000003157460
Appl. No.:
12/406,562
Filed:
March 18, 2009
Prior Publication Data
Document Identifier
Publication Date
US 20090239533 A1 Sep 24, 2009
Related U.S. Patent Documents
Application Number
Filing Date
Patent Number
Issue Date
61038598 Mar 21, 2008
61057544 May 30, 2008
Current U.S. Class: 1/1
Current CPC Class: H04W 48/16 (20130101); H04J 11/0093 (20130101); H04W 84/045 (20130101)
Current International Class: H04W 4/00 (20090101); H04W 48/16 (20090101); H04J 11/00 (20060101); H04W 84/04 (20090101)
Field of Search: ;370/328
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