Cellular channel allocation scheme with multi-user detection
First Claim
1. A method of channel allocation in a cellular communications system, including the steps of:
- a. allocating a common channel to a plurality of user terminals within a cluster of mutually adjacent cells, without allocating said common channel to user terminals in other cells adjacent said cluster;
b. receiving a respective plurality of temporally overlapping transmissions within said common channel from said plurality of user terminals in the same cell or adjacent cells within the cluster; and
c. separately decoding each of said plurality of overlapping transmissions by means of a multi-user detection technique.
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Accused Products
Abstract
In a spectrum allocation method in a cellular communication system, a cell pattern is divided into clusters each containing a plurality of adjacent cells. A pool of forward and return link bearers is allocated to each cluster and may be shared among cells within the cluster. Bearers are reused between blusters having a sufficiently high mutual isolation. Preferably, the same time slot in a return link bearer is allocated to multiple users within the cluster. The receiver of the shared return link bearer uses multi-user detection techniques to separately decode the signals from each user sharing a time slot, using the spatial diversity of the individual cells.
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Citations
29 Claims
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1. A method of channel allocation in a cellular communications system, including the steps of:
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a. allocating a common channel to a plurality of user terminals within a cluster of mutually adjacent cells, without allocating said common channel to user terminals in other cells adjacent said cluster;
b. receiving a respective plurality of temporally overlapping transmissions within said common channel from said plurality of user terminals in the same cell or adjacent cells within the cluster; and
c. separately decoding each of said plurality of overlapping transmissions by means of a multi-user detection technique. - View Dependent Claims (2, 3, 4, 5, 6, 14, 15, 16, 17, 19, 21, 23, 24, 25, 26, 27, 28, 29)
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7. A method of channel allocation in a cellular communications system, including the steps of:
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a. determining a cell clustering pattern in which cells are grouped together into a plurality of clusters of adjacent cells, each cluster containing a similar number and arrangement of adjacent cells;
b. allocating a plurality of channels to said clusters such that each said channel is allocated only to non-adjacent clusters; and
c. allocating the same one of said channels to each of a plurality of user terminals within the same or adjacent cells of the same cluster;
such that each of said plurality of user terminals is permitted to transmit at overlapping times within the same channel. - View Dependent Claims (8, 9, 10, 11, 12, 13, 18, 20, 22)
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Specification