C180 PLT DISAGREES WITH ATC'S POS THAT HE ENTERED SAN CLASS B AIRSPACE WHEN FLYING THE VFR CORRIDOR.

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DEPARTED BROWN VFR; PLAN WAS V27 8500 FT. ATTEMPTED CONTACT WITH SOCAL APCH FOR CLRNC THROUGH CLASS B AIRSPACE. NO RESPONSE; SO BACKUP WAS THE VFR CORRIDOR. SOCAL RESPONDED AS I WAS OVER THE E END OF CORONADO BRIDGE AT 3600 FT CLBING TO 4500 FT. PASSED THE END OF RWY 27; A NUMBER OF XMISSIONS AND CTLR DID NOT UNDERSTAND MY LOCATION. HE FINALLY CLRED ME AS REQUESTED TO CLB TO 8500 FT THROUGH THE CLASS B AIRSPACE VIA V27. CTLR ASKED IF I WAS FAMILIAR WITH CLASS B AIRSPACE. CTLR GAVE ME A TELEPHONE NUMBER AND REQUESTED I CALL WHEN ON THE GND. I CALLED AND DISCUSSED WITH SUPVR. HE DID NOT HAVE ANY DETAILS; BUT INDICATED I WAS WELL W OF VFR CORRIDOR WHEN RADIO CONTACT WAS ESTABLISHED. THAT DOES NOT MAKE SENSE TO ME AS LINDBERGH RWY 27 AND MONTGOMERY FIELD ARE NOT LIKELY LANDMARKS TO MISTAKE. I DO SEE ANOTHER COLLEGE ON THE TERMINAL CHART THAT I MIGHT HAVE MISTAKEN FOR QUALCOM STADIUM; BUT THAT ERROR WOULD HAVE STILL PUT ME IN THE 100/318 SECTOR. I CANNOT DOUBT THAT THE CTLR SAW A REAL PROB. THIS IS THE FIRST TIME I HAVE USED THE SAN DIEGO VFR CORRIDOR; IT IS MORE COMPLICATED THAN THE LA'S WHICH I HAVE USED A NUMBER OF TIMES. PERHAPS THE FREEWAY PATTERNS DO NOT LOOK AS OBVIOUS AS ON THE CHART. IF I HAVE FUTURE OCCASION TO FLY THIS I WILL FILE IFR INSTEAD OF USING THE VFR CORRIDOR. (MISSION BAY IS ALSO A DISTINCTIVE LANDMARK.)