Patent ID: 8718101
Filing Date: 2014-05-06
Classification: H04L

Abstract:
1. A pilot selection method, adapted for selecting pilot patterns for at least a public advanced base station (ABS), at least a closed subscriber group (CSG) femtocell ABS and at least a macro cell ABS in a heterogeneous wireless communication network, the pilot selection method comprising: using different segment IDs of the public ABS and the CSG femtocell ABS to a segment ID of the macro cell ABS, wherein the public ABS and the CSG femtocell ABS are co-located with the macro cell ABS; and selecting a different segment ID of the public ABS to that of the CSG femtocell ABS; wherein a first segment ID is used for the public ABS, a second segment ID is used for the CSG femtocell ABS, and a third segment ID is used for the co-located macro cell ABS, wherein the first segment ID, the second segment ID and the third segment ID are different from each other; wherein the first segment ID selected for the public ABS is used to determine a rank-2 pilot pattern of the public ABS, the second segment ID selected for the CSG femtocell ABS is used to determine a rank-2 pilot pattern of the CSG femtocell ABS; and wherein if the third segment ID of the co-located macro cell ABS is n, then the first segment ID, i, of the public ABS is selected according to the following equation (1) and the second segment ID, i, of the CSG femtocell ABS is selected according to the following equation (2): wherein n is an integer number greater than or equal to zero and 1nod is modulo function.