Wireless communication method, apparatus, and computer-readable storage medium
This application provides a wireless communication method, an apparatus, and a computer-readable storage medium. The method includes: A terminal receives a system message that is broadcast by an access network device on a physical broadcast channel PBCH, where the system message includes an extension field, and the extension field is used to indicate a format of the system message. The terminal discards the system message if information about the extension field is first information, where the first information is used to indicate that the format of the system message is an extended format. In this way, the terminal can select a proper manner to correctly process the system message.
1. A wireless communication method, comprising:
receiving, by a terminal, a system message that is broadcast by an access network device on a physical broadcast channel (PBCH), wherein the system message comprises an extension field, and the extension field indicates a format of the system message; and
discarding, by the terminal, the system message when it is determined information about the extension field is first information, wherein the first information indicates that the format of the system message is an extended format, wherein the system message received by the terminal is an interleaved system message, and further
performing de-interleaving on the interleaved system message, to obtain a de-interleaved system message; and
determining the extension field based on the de-interleaved system message.
2. The method according to claim 1 , wherein the method further comprises:
processing, by the terminal, the system message if information about the extension field is second information, wherein the second information indicates that the format of the system message is a conventional format.
3. The method according to claim 2 , wherein the system message further comprises a first field, and the first field occupies the 1 st to the 14 th bits of the system message; and
if the information about the extension field is the second information, the 1 st to the 10 th bits of the first field are a system frame number (SFN) field, the 11 th bit of the first field is a half radio frame (HRF) field, and the 12 th to the 14 th bits of the first field are a synchronization signal and PBCH block (SSB) time index field.
4. The method according to claim 1 , wherein the extension field is located at a fixed bit of the system message.
5. The method according to claim 4 , wherein the fixed bit occupied by the extension field is the 15 th bit of the system message.
6. The method according to claim 1 , wherein the system message further comprises a first field; and
if the information about the extension field is the first information, the first field comprises some or all of the following fields:
a system frame number (SFN) field, a half radio frame (HRF) field, a synchronization signals and PBCH block (SSB) time index field, or an extension field.
7. An apparatus, comprising:
a receiver, in coordination with a processor, configured to receive a system message that is broadcast by an access network device on a physical broadcast channel (PBCH), wherein the system message comprises an extension field, and the extension field indicates a format of the system message; and
wherein the processor, configured to discard the system message when it is determined that information about the extension field is first information, wherein the first information indicates that the format of the system message is an extended format, wherein the system message received by the apparatus is an interleaved system message, and the processing unit is further configured to:
perform de-interleaving on the interleaved system message, to obtain a de-interleaved system message; and
determine the extension field based on the de-interleaved system message.
8. The apparatus according to claim 7 , wherein the processor is further configured to:
process the system message if information about the extension field is second information, wherein the second information indicates that the format of the system message is a conventional format.
9. The apparatus according to claim 7 , wherein the extension field is located at a fixed bit of the system message.
10. The apparatus according to claim 9 , wherein the fixed bit occupied by the extension field is the 15 th bit of the system message.
11. The apparatus according to claim 7 , wherein the system message further comprises a first field, and the first field occupies the 1 st to the 14 th bits of the system message; and
if the information about the extension field is the second information, the 1 st to the 10 th bits of the first field are a system frame number (SFN) field, the 11 th bit of the first field is a half radio frame (HRF) field, and the 12 th to the 14 th bits of the first field are a synchronization signal and PBCH block (SSB) time index field.
12. The apparatus according to claim 7 , wherein the system message further comprises a first field; and
if the information about the extension field is the first information, the first field comprises some or all of the following fields:
a system frame number (SFN) field, a half radio frame (HRF) field, a synchronization signal and PBCH block (SSB) time index field, or an extension field.
13. An apparatus, comprising:
a processing unit, configured to generate a system message, wherein the system message comprises an extension field, and the extension field indicates a format of the system message; and
a communications unit, configured to, in coordination with the processing unit, broadcast the system message on a physical broadcast channel (PBCH), wherein the extension field is located at a fixed bit of the system message and the fixed bit occupied by the extension field is the 15 th bit of the system message.
14. The apparatus according to claim 13 , wherein if information about the extension field is first information, the format of the system message is an extended format; or
if information about the extension field is second information, the format of the system message is a conventional format.
15. The apparatus according to claim 14 , wherein the system message further comprises a first field; and if the information about the extension field is the second information, the 1 st to the 10 th bits of the first field are a system frame number (SFN) field, the 11 th bit of the first field is a half radio frame (HRF) field, and the 12 th to the 14 th bits of the first field are a synchronization signal and PBCH block (SSB) time index field.
16. The apparatus according to claim 14 , wherein the system message further comprises a first field; and if the information about the extension field is the first information, the first field comprises some or all of the following fields:
a system frame number (SFN) field, a half radio frame (HRF) field, a synchronization signal and PBCH block (SSB) time index field, or an extension field.
17. The apparatus according to claim 13 , wherein the processing unit is further configured to:
perform interleaving on the system message, to obtain an interleaved system message; and
the communications unit is further configured to:
broadcast the interleaved system message on the PBCH.