Downlink scheduling using parallel code trees
First Claim
1. Method of scheduling a transfer of data to at least one user in a cellular mobile communication network, wherein the transfer of data is achieved via different downlink channels using codes selected from different code trees, the method comprising the steps:
- receiving requests to access downlink channels until the beginning of a scheduling time interval (TTI)coordinating permissions to access downlink channels according to the assignment of downlink channels to the different code trees.
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Abstract
The present invention aims at avoiding code limitation in a CDMA cellular mobile communication network without decrease in data transmission quality. This object is achieved through a method of scheduling a transfer of data to at least one user in a cellular mobile communication network where the transfer of data is achieved via downlink channels using codes selected from a plurality of code trees. In a first step of the method a plurality of requests (*) to access downlink channels are received until the beginning of a scheduling time interval. In a second step permissions to access downlink channels ( ) are coordinated according to the assignment of downlink channels to the different code trees (A, B).
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20 Claims
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1. Method of scheduling a transfer of data to at least one user in a cellular mobile communication network, wherein the transfer of data is achieved via different downlink channels using codes selected from different code trees, the method comprising the steps:
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receiving requests to access downlink channels until the beginning of a scheduling time interval (TTI) coordinating permissions to access downlink channels according to the assignment of downlink channels to the different code trees. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus for scheduling a transfer of data to at least one user (A, B, C) in a cellular mobile communication network, wherein the transfer of data is achieved via different downlink channels using codes selected from different code trees, comprising:
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an interface unit adapted to receive requests to access downlink channels until the beginning of a scheduling time interval (TTI); a coordination unit adapted to coordinate permissions to access downlink channels according to the assignment of downlink channels to different code trees. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of scheduling a transfer of data to at least one user in a cellular mobile communication network, wherein the transfer of data is achieved via different downlink channels using codes selected from different code trees, the method comprising the steps:
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receiving requests to access downlink channels until the beginning of a scheduling time interval (TTI); scheduling access to the downlink channels by using assignment of codes from different code trees to the downlink channels.
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Specification