TXWY INCURSION ON THE N RTE TO RWY 24L AT LAX; CA.

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THE GND CTL FREQ WAS EXTREMELY CONGESTED. WE CALLED REPEATEDLY FROM THE RAMP FOR TAXI INSTRUCTIONS. THE CAPT WAS IN THE R SEAT WORKING THE RADIOS AND I WAS IN THE L SEAT AS PF. GND FINALLY ANSWERED OUR REQUEST FOR TAXI INSTRUCTIONS ABOUT 10 MINS AFTER OUR FIRST COM'S ATTEMPT. WE WERE CLRED TO RWY 24L VIA TXWY C TO HOLD SHORT AT S. WE TAXIED AS INSTRUCTED AND HELD SHORT ON TXWY C AT S. WE WERE THEN CLRED TO CONTINUE PAST S TO FOLLOW A METROLINER ONTO TXWY Q AND TO TAXI TO RWY 24L. WE DID AS INSTRUCTED; SWITCHING FREQS FROM S COMPLEX GND 121.75 TO N COMPLEX GND 121.65 AFTER TURNING R ONTO TXWY E FROM TXWY Q ENRTE TO RWY 24L. UPON CONTACTING N COMPLEX GND WE WERE INSTRUCTED TO FOLLOW ANOTHER ACFT; I BELIEVE IT WAS A DC10; FROM L TO R ONTO TXWY E FROM TXWY Q. WE INFORMED GND THAT WE WERE ALREADY ON TXWY E; AT WHICH TIME GND CHIDED US FOR NOT CONTACTING THEM ON TXWY Q PRIOR TO CONTINUING ONTO TXWY E. WE FELT THAT HAVING RECEIVED A CLRNC TO FOLLOW THE METROLINER AND TAXI TO RWY 24L WITH NO ADDITIONAL INSTRUCTIONS TO STOP OR HOLD SHORT ALONG THE WAY ALLOWED US TO CONTINUE AND TO CONTACT N COMPLEX GND AT THE FIRST OPPORTUNITY; WHICH WE DID. THE HVY RADIO TFC ON THE GND CTL FREQS PREVENTED US FROM CONTACTING N COMPLEX GND ANY EARLIER THAN WE DID. THE LAX ARPT CHART LISTS CHK POINTS 1; 2; AND 3 BTWN THE N AND S COMPLEXES AND WE COULD HAVE STOPPED AT CHK POINT 1 ON TXWY Q UNTIL RADIO CONTACT WAS ESTABLISHED WITH N COMPLEX GND HAD WE BEEN INSTRUCTED TO DO SO. THE CLRNC TO TAXI TO RWY 24L SEEMED TO NEGATE HOLDING AT CHK POINT 1.