CANDIDATE SERVING CELL-DETERMINING METHOD OF A MOBILE SUBSCRIBER

• US 20070270148A1
• Filed: 05/15/2007
• Published: 11/22/2007
• Est. Priority Date: 05/19/2006
• Status: Abandoned Application

• Current Assignee: BenQ Corporation (Qisda Corporation)
• Original Assignee: BenQ Corporation (Qisda Corporation)
• Inventors: Yang, Chun-Chieh, Yeh, Chun-Feng
• Application Number:
  US11/748,787
• Publication Number:
  US 20070270148A1
• Time in Patent Office: Days
• US Class Current: 455/436
• CPC Class Codes: H04W 36/00835 Determination of neighbour cell lists

Abstract

A candidate serving cell-determining method of a mobile subscriber in cell reselection tasks is disclosed. The mobile subscriber communicates with a mobile network by a serving cell, in which the mobile network comprises a plurality of neighbor cells including the serving cell. The candidate serving cell-determining method comprising the steps of: detecting the signal strengths of neighbor cells; choosing top N cells in signal strength as candidate serving cells; detecting afresh the signal strengths of the neighbor cells, and adding a predetermined weighting strength to each signal strength of the candidate serving cell so as to form the in-list signal strength of the respective candidate serving cell; and choosing top N cells from the neighbor cells by comparing the in-list signal strengths of the candidate serving cells with the real signal strengths of the rest neighbor cells.

Claims

1. A method for a mobile subscriber to determine candidate serving cells, said mobile subscriber communicating with a mobile network by a serving cell, the mobile network comprising said serving cell and a plurality of neighbor cells, the method comprising:

(a) detecting signal strengths of said neighbor cells;

(b) choosing N neighbor cells with stronger signal strengths than other neighbor cells to be candidate serving cells;

(c) detecting the signal strengths of the neighbor cells, adding a predetermined weight strength to all the signal strengths of said candidate serving cells to form new signal strengths of said candidate serving cells; and

(d) choosing N neighbor cells with stronger signal strengths than other neighbor cells in step (c).

2. The method according to claim 1, said mobile subscriber having a candidate serving cell list, the method further comprising:

in step (b), registering said N cells into the candidate serving cell list; and

in said step (d), updating said candidate serving cell list when said N cells in the step (b) being different to said N cells in the step (d).

3. The method according to claim 1, further comprising:

(g) detecting a signal strength of said serving cell; and

(h) choosing a strongest signal strength of said candidate serving cell if strongest signal strength of said candidate serving cell larger than the signal strength of said serving cell.

4. The method according to claim 1, further comprising:

waiting a predetermined time before step (c).

5. The method according to claim 1, wherein said predetermined weighting strength ranges between 3 dB and 5 dB.

6. The method according to claim 1, wherein said N is equal to 6.

7. The method according to claim 1, further comprising:

(i) revoking said number N of said plurality of neighbor cells adding said weighting strength respectively;

(j) detecting afresh the signal strength of said plurality of neighbor cells, and said chosen number N of said plurality of neighbor cells at the step (d) adding said weighting strength respectively to represent the signal strength of said number N neighbor cells; and

(k) choosing number N of said plurality of neighbor cells having strongest signal strength after step (j).