Secondary synchronization codebook for E-UTRAN
AssigneeQUALCOMM Incorporated
InventorsTao Luo, Peter Gaal, Ke Liu, Arun Kannu
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Abstract
Providing for secondary synchronization encoding utilizing a primary synchronization channel (P-SCH)-related scrambling code is described herein. Scrambled secondary synchronization codes (SSCs) can be assigned to multiple base stations of a radio access network (RAN). By way of example, PSC-based scrambling codes can be created from a plurality of M-sequences generated from a common polynomial expression. Further, an SSC codebook is provided that selects sequence pairs of a sequence matrix for generating SSCs. Selection can be based on transmission characteristics of resulting SSCs, providing reduced interference in planned, semi-planned and/or unplanned mobile deployments.
Claims12
An apparatus for mitigating synchronization code interference in a wireless communication system, comprising:
- a processor configured to:
- select a pair of sequences;
- generate scrambling codes;
- wherein the scrambling codes comprise at least a primary synchronization code (PSC)-based scrambling code;
- scramble the pair of sequences using the scrambling codes, thereby providing a scrambled pair of sequences;
- combine the scrambled pair of sequences via interleaving to form a secondary synchronization code (SSC);
- and
- transmit, by a base station, the SSC to at least one user equipment;
- and
- a memory coupled to the processor.
A method for mitigating synchronization code interference in a wireless communication system, comprising:
- selecting a pair of sequences;
- generating scrambling codes;
- wherein the scrambling codes comprise at least a primary synchronization code (PSC)-based scrambling code;
- scrambling the pair of sequences using the scrambling codes, thereby providing a scrambled pair of sequences;
- combining the scrambled pair of sequences via interleaving to form a secondary synchronization code (SSC);
- and
- transmitting, by a base station, the SSC to at least one user equipment.
Dependencies are inferred from the claim text.