Method of accessing network based on access technology and electronic device therefor

1. An electronic device comprising:

a first wireless communication circuit configured to provide a first radio access technology (RAT) associated with a long term evolution (LTE);

a second wireless communication circuit configured to provide a second RAT associated with a new radio (NR);

a subscriber identification module;

a communication processor operatively connected with the first wireless communication circuit, the second wireless communication circuit, and the subscriber identification module; and

a memory operatively connected with the communication processor, wherein the memory stores one or more instructions that, when executed, cause the communication processor to:

obtain access technology identifier (ATI) information associated with one public land mobile network (PLMN) from the subscriber identification module, and

perform frequency scanning by using the first wireless communication circuit, based on the ATI information indicating a next generation radio access network (NG-RAN) associated with the first RAT.

2. The electronic device of claim 1 ,

wherein the ATI information includes a bit string of a 8-bit length, and

wherein a first value of a third least significant bit (LSB) of the ATI information indicates the NG-RAN associated with the first RAT.

3. The electronic device of claim 1 , wherein the one or more instructions, which when executed, cause the communication processor to:

perform frequency scanning by using the first wireless communication circuit, depending on a band priority set to frequency bands of the first RAT, based on the ATI information indicating the NG-RAN associated with the first RAT.

4. The electronic device of claim 1 , wherein the one or more instructions, which when executed, cause the communication processor to:

perform frequency scanning by using the second wireless communication circuit, based on the ATI information indicating an NG-RAN associated with the second RAT.

5. The electronic device of claim 4 ,

wherein the ATI information includes a bit string of a 8-bit length, and

wherein a first value of a fourth least significant bit (LSB) of the ATI information indicates the NG-RAN associated with the second RAT.

6. The electronic device of claim 4 , wherein the one or more instructions, which when executed, cause the communication processor to:

perform frequency scanning depending on a band priority set to frequency bands of the second RAT by using the second wireless communication circuit, based on the ATI information indicating the NG-RAN associated with the second RAT.

7. The electronic device of claim 1 , wherein the PLMN comprises a PLMN having a highest priority from among a plurality of PLMNs stored in the subscriber identification module.

8. The electronic device of claim 1 , wherein the PLMN comprises a home PLMN (HPLMN) or an equivalent HPLMN (EHPLMN) among a plurality of PLMNs stored in the subscriber identification module.

9. The electronic device of claim 1 , wherein the one or more instructions, which when executed, cause the communication processor to:

search for one or more cells through the frequency scanning; and

identify system information of the one or more found cells from the search.

10. The electronic device of claim 9 , wherein the one or more instructions, which when executed, cause the communication processor to:

connect to a 5 th generation (5G) core through the one or more found cells by using the first wireless communication circuit, based on the system information of the one or more found cells indicating that a core of the one or more found cell is the 5G core.

11. A frequency scanning method of an electronic device, the method comprising:

obtaining access technology identifier (ATI) information associated with one public land mobile network (PLMN) from a subscriber identification module of the electronic device; and

performing frequency scanning by using a first wireless communication circuit configured to provide a first radio access technology (RAT) associated with a long term evolution (LTE), based on the ATI information indicating a next generation radio access network (NG-RAN) associated with the first RAT.

12. The method of claim 11 ,

wherein the ATI information includes a bit string of a 8-bit length, and

wherein a first value of a third least significant bit (LSB) of the ATI information indicates the NG-RAN associated with the first RAT.

13. The method of claim 11 , wherein the performing of the frequency scanning by using the first wireless communication circuit configured to provide the first RAT includes:

performing frequency scanning by using the first wireless communication circuit, depending on a band priority set to frequency bands of the first RAT.

14. The method of claim 11 , further comprising:

performing frequency scanning by using a second wireless communication circuit, based on the ATI information indicating an NG-RAN associated with a second RAT.

15. The method of claim 14 ,

wherein the ATI information includes a bit string of a 8-bit length, and

wherein a first value of a fourth least significant bit (LSB) of the ATI information indicates the NG-RAN associated with the second RAT.

16. An electronic device comprising:

a first wireless communication circuit configured to provide a first radio access technology (RAT) associated with a long term evolution (LTE);

a second wireless communication circuit configured to provide a second RAT associated with a new radio (NR);

a subscriber identification module;

a communication processor operatively connected with the first wireless communication circuit, the second wireless communication circuit, and the subscriber identification module; and

a memory operatively connected with the communication processor, wherein the memory stores one or more instructions that, when executed, cause the communication processor to:

obtain access technology identifier (ATI) information associated with one public land mobile network (PLMN) from the subscriber identification module; and

based on the ATI information indicating a next generation radio access network (NG-RAN), perform frequency scanning by using the first wireless communication circuit or the second wireless communication circuit based on an RAT priority or a band priority stored in the memory.

17. The electronic device of claim 16 ,

wherein the ATI information includes a bit string of a 8-bit length, and

wherein a first value of a fourth least significant bit (LSB) of the ATI information indicates the NG-RAN.

18. The electronic device of claim 16 , wherein the one or more instructions, which when executed, cause the communication processor to:

perform frequency scanning from an RAT, the RAT priority of which is relatively high, from among the first RAT and the second RAT.

19. The electronic device of claim 16 , wherein the band priority includes a plurality of bands and a priority associated with RAT information of the plurality of bands.

20. The electronic device of claim 19 , wherein the band priority is differently set depending on a location.