Method of improving the receiving performance for network-aided gps receiver
AssigneeSamsung Electronics Co., Ltd.
InventorDo-Hyoung Chung
Life of this patent
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Abstract
A method of improving the reception performance of a network-aided GPS (Global Positioning System) receiver is disclosed. It is determined whether the present time is feasible for TLM/HOW coherent integration, based on present CDMA/GPS information. When the TLM/HOW coherent integration is immediately available, a GPS signal acquisition search is performed using the TLM/HOW coherent integration. Then, it is determined whether the signal acquisition search is successful. If the signal acquisition search has failed, then there is a request for navigation data bits to a base station, which increases a coherent integration period.
Claims5
A method of improving reception performance for a network-aided GPS (Global Positioning System) receiver, comprising the steps of:
- determining whether a present time is feasible for a TLM/HOW (Telemetry Word/Hand-Over Word) coherent integration based on a present CDMA/GPS (Code Division Multiple Access) information;
- performing a GPS signal acquisition search using the TLM/HOW coherent integration when the TLM/HOW coherent integration is immediately available;
- determining whether the GPS signal acquisition search is successful;
- and
- terminating the GPS signal acquisition search, if the GPS signal acquisition search is successful.
A method of improving reception performance for a network-aided GPS (Global Positioning System) receiver, comprising the steps of:
- determining whether a present time is feasible for a TLM/HOW (Telemetry Word/Hand-Over Word) coherent integration based on a present CDMA/GPS (Code Division Multiple Access) information;
- performing a GPS signal acquisition search based on a 20-ms coherent integration when the TLM/HOW coherent integration is not immediately available;
- determining whether the 20-ms coherent integration signal acquisition search is successful;
- performing a GPS signal acquisition search using the TLM/HOW coherent integration, if the 20-ms coherent integration signal acquisition search fails or the TLM/HOW coherent integration is immediately available;
- determining whether the TLM/HOW coherent integration signal acquisition search is successful;
- and
- increasing a coherent integration period by requesting navigation data bits to a base station, if the TLM/HOW coherent integration signal acquisition search has failed.
Dependencies are inferred from the claim text.