Patent ID: 8385960
Filing Date: 2013-02-26
Classification: H04L,H04W

Abstract:
1. A method for communicating between a primary station and a plurality of secondary stations, comprising the steps (a) each, secondary station is configured to search at least one of a plurality of search spaces, each search space comprising at least one resource set, where at least one resource set might be used to transmit a message to the considered secondary station, (b) the search space of a given secondary station is determined on the basis of a hash function, wherein the hash function is such that the probability that two secondary stations are configured to have common resources in the search spaces in both of any two subframes substantially equals the product of the probability that the two secondary stations are configured to have a common resource in the first subframe and the probability that the two secondary stations are configured to have a common resource in the second subframe, (c) at each secondary station, searching in the configured at least one search space for a control message from the primary station addressed to the considered secondary station, and receiving the control message.