Synchronization signal block index signaling
AssigneeApple Inc.
InventorsWei Zeng, Yuchul Kim, Dawei Zhang
Life of this patent
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Abstract
This disclosure relates to providing synchronization signal block index signaling in a cellular communication system. A cellular base station may provide synchronization signals according to a periodic pattern, including transmitting one or more synchronization signal bursts each including one or more synchronization signal blocks. A wireless device may detect a synchronization signal block. The wireless device may determine a synchronization signal block index of the detected synchronization signal block. The wireless device may provide an indication of the synchronization signal block index of the detected synchronization signal block to the cellular base station.
Claims20
A wireless device, comprising:
- an antenna;
- a radio operably coupled to the antenna;
- and
- a processor operably coupled to the radio, wherein the processor is configured to cause the wireless device to:
- detect a synchronization signal (SS) block from a cellular base station;
- determine a scrambling code for the physical broadcast channel portion of the detected SS block by testing a plurality of relative position hypotheses for the detected SS block, wherein each test uses a different scrambling code, and wherein relative positions of SS blocks are implicitly signaled using scrambling codes for the physical broadcast channel portion of the detected SS block;
- determine a relative position of the detected SS block based on the scrambling code;
- determine a SS block index of the detected SS block based on the relative position of the detected SS block;
- and
- transmit an indication of the SS block index of the detected SS block to the cellular base station.
An apparatus, comprising:
- a processor, configured to cause a wireless device to:
- detect a synchronization signal (SS) block from a cellular base station;
- determine a scrambling code for the physical broadcast channel portion of the detected SS block by testing a plurality of relative position hypotheses for the detected SS block, wherein each test uses a different scrambling code, and wherein relative positions of SS blocks are implicitly signaled using scrambling codes for the physical broadcast channel portion of the detected SS block;
- determine a relative position of the detected SS block based on the scrambling code;
- determine a SS block index of the detected SS block based on the relative position of the detected SS block;
- and
- transmit an indication of the SS block index of the detected SS block to the cellular base station.
A method, comprising:
- by a wireless device:
- detecting a synchronization signal (SS) block from a cellular base station;
- determining a scrambling code for the physical broadcast channel portion of the detected SS block by testing a plurality of relative position hypotheses for the detected SS block, wherein each test uses a different scrambling code, and wherein relative positions of SS blocks are implicitly signaled using scrambling codes for the physical broadcast channel portion of the detected SS block;
- determining a relative position of the detected SS block based on the scrambling code;
- determining a SS block index of the detected SS block based on the relative position of the detected SS block;
- and
- transmitting an indication of the SS block index of the detected SS block to the cellular base station.
Dependencies are inferred from the claim text.