Dynamic and smart spreading for wideband CDMA
AssigneeLucent Technology Inc.
InventorWen-Yi Kuo
Life of this patent
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Abstract
A method for allocating utilization of multiple carriers in a wideband CDMA transmission system first determines the carrier utilization/interference levels for each of the multiple carriers. Based on the carrier utilization/interference level, carrier assignments are allocated on an unequal basis. The allocation of the carrier assignment biases the selection of the carriers away from higher utilized/interfered carriers. An apparatus for implementing the method is also described.
Claims27
A method for allocating loading of multiple carriers in a wideband CDMA transmission system comprising the steps of:
- determining carrier interference for each of the multiple carriers;
- and
- allocating encoded bits of a user to the multiple carriers, an amount of the encoded bits allocated to each carrier based in part upon said determined interference.
An apparatus for allocating utilization of multiple carriers in a wideband CDMA transmission system comprising:
- means for determining carrier interference for each of the multiple carriers;
- and
- a de-multiplexer adapted to allocate different portions of at least one transmitted signal into a plurality of the multiple carriers based in part upon the determined interference.
A method for allocating loading of multiple carriers in a wideband CDMA transmission comprising the steps of:
- determining carrier interference for each of the multiple carriers;
- and
- de-multiplexing different portions of at least one transmitted signal into different carriers, an amount of the de-multiplexed at least one transmitted signal onto each of the different carriers, based in part upon the determined interference.
A method for allocating loading of multiple carriers in a wideband CDMA transmission comprising the steps of:
- determining carrier utilization/interference for each of the multiple carriers;
- assigning different spreading ratios to different users based upon said determined utilization/interference;
- and
- allocating different portions of at least one transmitted signal from at least one user into a plurality of the multiple carriers, based upon the spreading ratio assigned to the one user.
A method for allocating loading of multiple carriers in a wideband CDMA transmission comprising the steps of:
- determining carrier utilization/interference for each of the multiple carriers;
- and
- spreading encoded bits of a user non-uniformly into different carriers based upon the determined utilization/interference.
A method for allocating loading of multiple carriers in a wideband CDMA transmission comprising the steps of:
- determining carrier interference for each of the multiple carriers;
- assigning different spreading ratios to different users based on said determined interference;
- and
- spreading encoded bits of each of said users into different carriers in accordance with said different spreading ratios.
An apparatus for allocating utilization of multiple carriers in a wideband CDMA transmission system comprising:
- means for determining carrier interference for each of the multiple carriers;
- means for determining carrier utilization for each of the multiple carriers;
- and
- a de-multiplexer for spreading different amounts of encoded bits for a user to different carriers such that power usage on said different carriers can be different for the same user;
- wherein said different amounts of said encoded bits are spread based on said determined carrier interference and carrier utilization.
Dependencies are inferred from the claim text.