Low i/o bandwidth method and system for implementing detection and identification of scrambling codes

A system for identifying a scrambling code from signals received from a base station, the base station belonging to one of a plurality of base station groups in a communication network, the system comprising:

• a scrambling code generator configured to generate a plurality of X-component segments and a plurality of Y-component segments, the plurality of X-component segments and the plurality of Y-component segments being respectively in a sequential order, the plurality of X-component and Y-component segments making up a master scrambling code;
• and
• a plurality of correlators arranged in a sequential manner, each correlator maintaining a corresponding X-component segment and a corresponding Y-component segment and configured to correlate a set of received signals with its corresponding X-component and Y-component segments and generate corresponding correlation results, the plurality of correlators collectively performing their correlations in a parallel manner in one or more iterations;
• wherein after each performed iteration, all but one of the plurality of correlators shift their corresponding X-component segments to their respective neighboring correlators and a new X-component segment is generated by the scrambling code generator and fed to one of the plurality of correlators, and a new Y-component segment is generated by the scrambling code generator and loaded into the plurality of correlators.

A system for identifying a scrambling code from signals received from a base station, the base station belonging to one of a plurality of base station groups in a communication network, the system comprising:

• a scrambling code generator configured to generate a plurality of X-component segments in a sequential manner, the plurality of X-component segments making up a master scrambling code;
• and
• a plurality of correlators coupled in a sequential manner and having a first correlator, a last correlator and a plurality of intermediate correlators coupled between the first correlator and the last correlator, the plurality of correlators configured to perform correlations in a parallel manner in one or more iterations;
• wherein:
• the plurality of correlators are each populated with corresponding X-component segments generated by the scrambling code generator;
• each of the plurality of correlators receives a set of received data samples;
• the plurality of correlators correlate the set of received data samples with their corresponding X-component segments in parallel in one iteration;
• after each iteration is completed, the plurality of intermediate correlators and the last correlator shift their corresponding X-component segments to their respective neighboring correlator, the corresponding X-component segment of the first correlator is discarded, and a new X-component segment is generated by the scrambling code generator and fed to the last correlator.

A method for identifying a scrambling code from signals received from a base station, comprising:

• selecting a correlation length;
• identifying a master scrambling code using the selected correlation length, the master scrambling code comprising a plurality of X-component segments arranged in a sequential manner;
• populating each of a plurality of correlators with a corresponding X-component segment in a sequential manner,
• providing a set of received data samples to each of the plurality of correlators;
• causing each of the plurality of correlators to correlate the set of received data samples with its corresponding X-component segment and store corresponding correlation results;
• shifting the corresponding X-component segments of all but one of the plurality of correlators to their respective neighboring correlators;
• populating one of the plurality of correlators with a new X-component segment, the new X-component segment sequentially following the corresponding X-component segments which are in the plurality of correlators;
• and
• repeating the providing step, the causing step, the shifting step and the populating step with the new X-component segment with successive sets of received data samples until the selected correlation length is achieved.

A method for identifying a scrambling code from signals received from a base station, the base station belonging to one of a plurality of base station groups in a communication network, the method comprising:

• identifying a master scrambling code, the master scrambling code comprising a plurality of X-component segments arranged in a sequential manner;
• performing a series of successive correlation iterations using a number of X-component segments taken from the plurality of X-component segments and corresponding sets of received data samples;
• and
• for each correlation iteration:
• providing a new set of received data samples;
• correlating the new set of received data samples with the number of X-component segments and storing correlation results;
• and
• refreshing the number of X-component segments in a first-in-first-out basis by discarding one X-component segment and adding another X-component segment.

A method for identifying a scrambling code from signals received from a base station, the base station belonging to one of a plurality of base station groups in a communication network, the method comprising:

• identifying a master scrambling code, the master scrambling code comprising a plurality of X-component segments arranged in a sequential manner;
• configuring a scrambling code generator to generate the plurality of X-component segments one X-component segment at a time;
• configuring a plurality of correlators in a sequential manner to perform correlations, the plurality of correlators having a first correlator, a last correlator and a plurality of intermediate correlators coupled between the first correlator and the last correlator;
• populating each of the plurality of correlators with a corresponding X-component segment generated from the scrambling code generator;
• causing the plurality of correlators to perform a series of successive correlation iterations using their corresponding X-component segments and corresponding sets of received data samples;
• and
• for each correlation iteration:
• providing a new set of received data samples;
• causing the plurality of correlators to respectively correlate the new set of received data samples with their corresponding X-component segments and store respective correlation results;
• shifting the corresponding X-component segments of the plurality of intermediate correlators and the last correlator to their respective neighboring correlators;
• transferring a new X-component segment generated by the scrambling code generator to the last correlator, the new X-component segment being in sequence with the corresponding X-component segment which was previously present in the last correlator.

The method of claim 47 wherein the master scrambling code further includes a plurality of Y-component segments in a sequential manner, and further comprising:

• configuring the scrambling code generator to generate the plurality of Y-component segments one Y-component segment at a time;
• and
• causing the plurality of correlators to perform a series of correlation iterations using their corresponding sets of received data samples and the plurality of Y-component segments;
• for each correlation iteration:
• causing the plurality of correlators to respectively correlate the new set of received data samples with one Y-component segment and store the respective correlation results;
• and
• directing the plurality of correlators to receive a new Y-component segment from the scrambling code generator, the new Y-component segment being in sequence with the Y-component segment that was used in the previous correlation iteration.