Method and apparatus of broadcast signals and channels for system information transmission
A method for receiving a broadcasting signal in a wireless communication system. The method comprises receiving, from a base station (BS), a physical broadcasting channel (PBCH) content over a PBCH, and determining the PBCH content including a payload, wherein the payload includes uncommon information within a transmission time interval (TTI) of the PBCH that comprises at least a portion of a 10-bit system frame number (SFN), a half frame index within a radio frame, and at least part of a synchronization signal (SS) block time index.
1. A base station comprising:
a controller configured to:
generate a primary synchronization signal (PSS) at a first orthogonal frequency division multiplexing (OFDM) symbol of a synchronization signal (SS) block based on one antenna port,
generate a secondary synchronization signal (SSS) at a second OFDM symbol of the SS block based on the one antenna port, wherein the first OFDM symbol is perfectly separated with the second OFDM symbol and is located prior to the second OFDM symbol in the SS block, and
generate a physical broadcast channel (PBCH) at the second OFDM symbol of the SS block based on the one antenna port, wherein the PBCH is frequency division multiplexed with the SSS only at the second OFDM symbol of the SS block, wherein a bandwidth of the SSS and the PBCH in the second OFDM symbol is X times larger than a bandwidth of the PSS in the first OFDM symbol, and wherein X has a value that is less than two and greater than one; and
a transceiver operably coupled with the controller, the transceiver configured to transmit the SS block including the PSS, the SSS, and the PBCH.
2. The base station of claim 1 , wherein the bandwidth for the SSS and the PBCH of the second OFDM symbol of the SS block is larger than the bandwidth for all signal(s) in the first OFDM symbol of the SS block, and wherein the PSS is the only signal in the first OFDM symbol of the SS block.
3. The base station of claim 1 , wherein the PBCH is frequency division multiplexed with the SSS by a contiguous subcarrier block level, at the second OFDM symbol of the SS block.
4. The base station of claim 1 , wherein a number of a SS block and location of the SS block are configured within a half frame.
5. The base station of claim 1 , wherein a measurement for radio resource management (RRM) is performed based on a channel state information reference signal (CSI-RS).
6. A method by a base station, the method comprising:
generating a primary synchronization signal (PSS) at a first orthogonal frequency division multiplexing (OFDM) symbol of a synchronization signal (SS) block based on one antenna port;
generating a secondary synchronization signal (SSS) at a second OFDM symbol of the SS block based on the one antenna port, wherein the first OFDM symbol is perfectly separated with the second OFDM symbol and is located prior to the second OFDM symbol in the SS block;
generating a physical broadcast channel (PBCH) at the second OFDM symbol of the SS block based on the one antenna port, wherein the PBCH is frequency division multiplexed with the SSS only at the second OFDM symbol of the SS block, wherein a bandwidth of the SSS and the PBCH in the second OFDM symbol is X times larger than a bandwidth of the PSS in the first OFDM symbol, and wherein X has a value that is less than two and greater than one; and
transmitting the SS block including the PSS, the SSS, and the PBCH.
7. The method of claim 6 , wherein the bandwidth for the SSS and the PBCH of the second OFDM symbol of the SS block is larger than the bandwidth for all signal(s) in the first OFDM symbol of the SS block, and wherein the PSS is the only signal in the first OFDM symbol of the SS block.
8. The method of claim 6 , wherein the PBCH is frequency division multiplexed with the SSS by a contiguous subcarrier block level, at the second OFDM symbol of the SS block.
9. The method of claim 6 , wherein a number of a SS block and location of the SS block are configured within a half frame.
10. The method of claim 6 , wherein a measurement for radio resource management (RRM) is performed based on a channel state information reference signal (CSI-RS).
11. A terminal comprising:
a transceiver; and
a controller coupled with the transceiver and configured to:
identify a primary synchronization signal (PSS) at a first orthogonal frequency division multiplexing (OFDM) symbol of a synchronization signal (SS) block based on one antenna port,
identify a secondary synchronization signal (SSS) at a second OFDM symbol of the SS block based on the one antenna port, wherein the first OFDM symbol is perfectly separated with the second OFDM symbol and is located prior to the second OFDM symbol in the SS block, and
identify a physical broadcast channel (PBCH) at the second OFDM symbol of the SS block based on the one antenna port,
wherein the PBCH is frequency division multiplexed with the SSS only at the second OFDM symbol of the SS block,
wherein a bandwidth of the SSS and the PBCH in the second OFDM symbol is X times larger than a bandwidth of the PSS in the first OFDM symbol, and
wherein X has a value that is less than two and greater than one.
12. The terminal of claim 11 , wherein the bandwidth for the SSS and the PBCH of the second OFDM symbol of the SS block is larger than the bandwidth for all signal(s) in the first OFDM symbol of the SS block, and wherein the PSS is the only signal in the first OFDM symbol of the SS block.
13. The terminal of claim 11 , wherein the PBCH is frequency division multiplexed with the SSS by a contiguous subcarrier block level, at the second OFDM symbol of the SS block.
14. The terminal of claim 11 , wherein a number of a SS block and location of the SS block are configured within a half frame.
15. The terminal of claim 11 , wherein a measurement for radio resource management (RRM) is performed based on a channel state information-reference signal (CSI-RS).
16. A method by a terminal, the method comprising:
identifying a primary synchronization signal (PSS) at a first orthogonal frequency division multiplexing (OFDM) symbol of a synchronization signal (SS) block based on one antenna port;
identifying a secondary synchronization signal (SSS) at a second OFDM symbol of the SS block based on the one antenna port, wherein the first OFDM symbol is perfectly separated with the second OFDM symbol and is located prior to the second OFDM symbol in the SS block; and
identifying a physical broadcast channel (PBCH) at the second OFDM symbol of the SS block based on the one antenna port, wherein the PBCH is frequency division multiplexed with the SSS only at the second OFDM symbol of the SS block, wherein a bandwidth of the SSS and the PBCH in the second OFDM symbol is X times larger than a bandwidth of the PSS in the first OFDM symbol, and wherein X has a value that is less than two and greater than one.
17. The method of claim 16 , wherein the bandwidth for the SSS and the PBCH of the second OFDM symbol of the SS block is larger than the bandwidth for all signal(s) in the first OFDM symbol of the SS block, and wherein the PSS is the only signal in the first OFDM symbol of the SS block.
18. The method of claim 16 , wherein the PBCH is frequency division multiplexed with the SSS by a contiguous subcarrier block level, at the second OFDM symbol of the SS block.
19. The method of claim 16 , wherein a number of a SS block and location of the SS block are configured within a half frame.
20. The method of claim 16 , wherein a measurement for radio resource management (RRM) is performed based on a channel state information-reference signal (CSI-RS).