Navigation data configuration for optimal time to first fix

A method for reducing time to first fix in a satellite navigation receiver in a restricted mode of operation, comprising:

• generating a navigation data structure, by a navigation data generation module of a signal generation system, said generation of said navigation data structure comprising:
• generating sub-frames of said navigation data structure, by a sub-frame generation module of said signal generation system, said sub-frames accommodating navigation data, said navigation data comprising ephemeris data, ionospheric data, coordinated universal time data, user defined data, and any combination thereof;
• staggering said navigation data in each of said sub-frames of said generated navigation data structure into a first portion and a second portion;
• processing said generated navigation data structure to generate a navigation signal, by a processing unit of said signal generation system;
• and
• transmitting said generated navigation signal to said satellite navigation receiver, by a transmission module of said processing unit of said signal generation system, wherein said transmission of said generated navigational signal comprises:
• parallelly transmitting said each of said sub-frames to said satellite navigation receiver over a first carrier frequency and a second carrier frequency by each of a plurality of satellites of a constellation to obtain said navigation data in reduced time, thereby reducing said time to first fix in said satellite navigation receiver in said restricted mode of operation, wherein said parallel transmission of said each of said sub-frames comprises:
• sequentially transmitting said first portion and said second portion of said each of said sub-frames to said satellite navigation receiver over said first carrier frequency, and a complementary of said first portion and said second portion of said each of said sub-frames to said satellite navigation receiver over said second carrier frequency in a first mode of service to obtain time of week data;
• sequentially transmitting said second portion of one of said sub-frames and said first portion of another one of said sub-frames, and a complementary of said second portion of said one of said sub-frames and said first portion of said another one of said sub-frames to said satellite navigation receiver over said first carrier frequency in a second mode of service;
• and
• sequentially transmitting said first portion of said one of said sub-frames and said second portion of said another one of said sub-frames, and a complementary of said first portion of said one of said sub-frames and said second portion of said another one of said sub-frames to said satellite navigation receiver over said second carrier frequency in said second mode of service, wherein said second mode of service is assisted by said first mode of service for availing said obtained time of week data in reduced time.