Method for frequency allocation and assignment in wireless communication systems

• US 5,835,859 A
• Filed: 10/13/1995
• Issued: 11/10/1998
• Est. Priority Date: 10/13/1995
• Status: Expired due to Term

• Current Assignee: Rateze Remote Mgmt. L.L.C. (Intellectual Ventures LLC)
• Original Assignee: AirNet Communications Corporation (Tecore Incorporated)
• Inventors: Doner, John R.
• Primary Examiner(s): Faile, Andrew
• Assistant Examiner(s): Boccio, Vincent F.
• Application Number:
  US08/542,720
• Time in Patent Office: 1,124 Days
• Field of Search: 455/33.3, 455/33.1, 455/56.1, 455/62, 455/63, 455/54.1, 455/34.1, 455/447, 455/450, 379/59
• US Class Current: 455/447
• CPC Class Codes: H04W 16/12 Fixed resource partitioning
• CPC Class Codes: H04W 16/24 Cell structures
• CPC Class Codes: H04W 28/16 Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
• CPC Class Codes: H04W 72/541 using the level of interference

Abstract

A single-cell wireless communication system is partitioned into n sectors, to which channels are allocated from two groups of non-adjacent channels. If the available channels are consecutively numbered from lowest to highest frequency, or vice versa, the groups are, respectively, the even-numbered channels and the odd-numbered channels. These two groups are each subdivided into n/2 sets, with the first set of each group including the lowest numbered channels of the group, the next set including the next lowest-numbered channels of the group, and so forth. The sets are then allocated to the sectors such that the first set of one of the groups is allocated to a first sector, the next set of the same group is allocated to a contiguous sector and so forth, with the last set of the second group allocated to the nth sector. The dividing points between the sets are selected such that any sector has at most a single channel that may experience adjacent-channel interference from a channel that is allocated from a contiguous sector. Preferably, a channel is selected for assignment to the mobile units such that the selected channel is within a greatest gap between the channels of the same set that are then in use. If the selected channel is the one channel that may experience adjacent-channel interference, another channel may be selected from the set.

Claims

1. A method for allocating channels to sectors of a cell of a wireless communication system, the method including the steps of:

A. partitioning the cell into n sectors;

B. consecutively numbering the channels, from lowest to highest frequency, and grouping the numbered channels into a first group and a second group of non-adjacent channels;

C. subdividing each of the first and second groups into n/2 sets of channels, with a first set of each group containing the lowest-numbered channels of the associated group, the second set containing the next lowest-numbered channels of the associated group, and so forth;

D. assigning the first set of the first group of channels to a first sector of the cell;

E. assigning to a contiguous sector of the cell the second set of the first group;

F. assigning to a next contiguous sector, which is subsequent to a previously assigned contiguous sector, of the cell the next set of the first group;

G. repeating step F until all of the sets of the first group are assigned to sectors;

H. assigning the first set of the second group to a next contiguous sector; and

I. repeating step F for the sets of the second group.

2. The method of claim 1, where the cell is partitioned into four sectors, the channels are grouped into groups of even-numbered and odd-numbered channels, and the groups are subdivided into sets of even-numbered high and low channels and odd-numbered high and low channels.