Patent ID: 8699546
Filing Date: 2014-04-15
Classification: H04B

Abstract:
1. A method, in a first wireless terminal, for identifying channelization codes and modulation schemes for interfering signals targeted to neighboring wireless terminals, the method comprising: for each of one or more neighboring wireless terminals, reading corresponding downlink order data from a downlink control channel, the downlink order data specifying an assignment of one or more channelization codes and a modulation scheme for the corresponding neighboring wireless terminal, each assignment depending on the downlink order data and an unknown modulation configuration parameter previously sent to the corresponding neighboring wireless terminal; identifying all possible combinations of channelization codes and modulation schemes for all of the neighboring wireless terminals, taking into account possible values for the unknown modulation configuration parameter or parameters and that no two wireless terminals are assigned the same channelization codes; for each possible combination, calculating a code-power consistency metric for each of the neighboring wireless terminals, based on despread data samples corresponding to the channelization codes of the possible combination; for each possible combination, calculating a modulation-matching metric for each of the neighboring wireless terminals, based on received despread data samples corresponding to the channelization codes of the possible combination; and identifying a most likely one of the possible combinations, using a weighted sum of the code-power consistency metrics and modulation-matching metrics for each possible combination.