US2020412468A1PendingUtilityA1
Time division multiplexing of synchronization channels

Assignee: QUALCOMM INCPriority: Jun 1, 2016Filed: Sep 10, 2020Published: Dec 31, 2020
Est. expiryJun 1, 2036(~9.8 yrs left)· nominal 20-yr term from priority
Inventors:Muhammad Nazmul Islam Navid Abedini Tao Luo Sundar Subramanian Juergen Cezanne Ashwin Sampath Alexei Yurievitch Gorokhov Junyi Li Bilal Sadiq
H04J 1/065H04L 27/2613H04W 56/0015H04L 27/2692H04L 27/2662H04L 27/2614H04L 25/022H04L 5/0051H04L 5/005H04L 5/0023H04L 5/0007H04L 1/08H04L 1/0026H04L 1/0009H04L 1/0003H04J 2203/0091H04J 2011/0003H04J 11/003H04B 7/2615H04B 7/216H04B 7/0617H01Q 3/2605
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References
Claims
Abstract

A user equipment (UE) receives a plurality of synchronization signals, the plurality of synchronization signals including a plurality of first synchronization signals of different types and a plurality of second synchronization signals of different types. Reception of the plurality of synchronization signals comprises: reception of a first transmission by receiving a first group of the plurality of synchronization signals; and reception of one or more repeat transmissions of the first transmission, wherein each of the one or more repeat transmissions of the first transmission includes a repetition of the first transmission, wherein the first transmission and the one or more repeat transmissions of the first transmission are received within a first synchronization subframe. The UE demultiplexes the plurality of synchronization signals by performing time-division demultiplexing of at least one of the plurality of first synchronization signals and at least one of the plurality of second synchronization signals.
Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A method of wireless communication at a user equipment (UE), comprising:
 receiving a plurality of synchronization signals, the plurality of synchronization signals including a plurality of first synchronization signals of different types and a plurality of second synchronization signals of different types, wherein the receiving the plurality of synchronization signals comprises:
 receiving a first transmission by receiving a first group of the plurality of synchronization signals; and 
 receiving one or more repeat transmissions of the first transmission, wherein each of the one or more repeat transmissions of the first transmission includes a repetition of the first transmission, wherein the first transmission and the one or more repeat transmissions of the first transmission are received within a first synchronization subframe; and 
   demultiplexing the plurality of synchronization signals by performing time-division demultiplexing of at least one of the plurality of first synchronization signals and at least one of the plurality of second synchronization signals.   
     
     
         2 . The method of  claim 1 , wherein the first transmission and the one or more repeat transmissions are transmitted in different directions. 
     
     
         3 . The method of  claim 1 , wherein, within the first synchronization subframe, each of the first transmission and the one or more repeat transmissions are received using at least one of a plurality of antenna subarrays of the UE. 
     
     
         4 . The method of  claim 1 , wherein the receiving the plurality of synchronization signals further comprises:
 receiving a second transmission by receiving a second group of the plurality of synchronization signals; and   receiving one or more repeat transmissions of the second transmission, wherein each of the one or more repeat transmissions of the second transmission includes a repetition of the second transmission,   wherein the second transmission and the one or more repeat transmissions of the second transmission are received within a second synchronization subframe.   
     
     
         5 . The method of  claim 4 , wherein the second group includes a beam reference signal (BRS), and
 wherein the BRS is frequency-division multiplexed with at least one of a physical broadcast channel (PBCH) signal, a primary synchronization signal (PSS), a secondary synchronization signal (SSS).   
     
     
         6 . The method of  claim 1 , further comprising:
 receiving system information including an indication about whether the first transmission and the one or more repeat transmissions are to be transmitted in a same direction or in different directions.   
     
     
         7 . The method of  claim 1 , wherein a duration of the first transmission and a duration of the at least one repeat transmission are based at least on a frame numerology of the wireless communication or are fixed values independent of the frame numerology. 
     
     
         8 . An apparatus for wireless communication at a user equipment (UE), comprising:
 a memory; and   at least one processor coupled to the memory and configured to:
 receive a plurality of synchronization signals, the plurality of synchronization signals including a plurality of first synchronization signals of different types and a plurality of second synchronization signals of different types, wherein reception of the plurality of synchronization signals comprises: 
 reception of a first transmission by receiving a first group of the plurality of synchronization signals; and 
 reception of one or more repeat transmissions of the first transmission, wherein each of the one or more repeat transmissions of the first transmission includes a repetition of the first transmission, wherein the first transmission and the one or more repeat transmissions of the first transmission are received within a first synchronization subframe; and 
   demultiplex the plurality of synchronization signals by performing time-division demultiplexing of at least one of the plurality of first synchronization signals and at least one of the plurality of second synchronization signals.   
     
     
         9 . The apparatus of  claim 8 , wherein the first transmission and the one or more repeat transmissions are transmitted in different directions. 
     
     
         10 . The apparatus of  claim 8 , wherein, within the first synchronization subframe, each of the first transmission and the one or more repeat transmissions are received using at least one of a plurality of antenna subarrays of the UE. 
     
     
         11 . The apparatus of  claim 8 , wherein the at least one processor is further configured to:
 receive a second transmission by receiving a second group of the plurality of synchronization signals; and   receive one or more repeat transmissions of the second transmission, wherein each of the one or more repeat transmissions of the second transmission includes a repetition of the second transmission,   wherein the second transmission and the one or more repeat transmissions of the second transmission are received within a second synchronization subframe.   
     
     
         12 . The apparatus of  claim 11 , wherein the second group includes a beam reference signal (BRS), and
 wherein the BRS is frequency-division multiplexed with at least one of a physical broadcast channel (PBCH) signal, a primary synchronization signal (PSS), a secondary synchronization signal (SSS).   
     
     
         13 . The apparatus of  claim 8 , wherein the at least one processor is further configured to:
 receive system information including an indication about whether the first transmission and the one or more repeat transmissions are to be transmitted in a same direction or in different directions.   
     
     
         14 . The apparatus of  claim 8 , wherein a duration of the first transmission and a duration of the at least one repeat transmission are based at least on a frame numerology of the wireless communication or are fixed values independent of the frame numerology. 
     
     
         15 . An apparatus for wireless communication at a user equipment (UE), comprising:
 means for receiving a plurality of synchronization signals, the plurality of synchronization signals including a plurality of first synchronization signals of different types and a plurality of second synchronization signals of different types, wherein the means for receiving the plurality of synchronization signals are configured to:
 receive a first transmission by receiving a first group of the plurality of synchronization signals; and 
 receive one or more repeat transmissions of the first transmission, wherein each of the one or more repeat transmissions of the first transmission includes a repetition of the first transmission, wherein the first transmission and the one or more repeat transmissions of the first transmission are received within a first synchronization subframe; and 
   means for demultiplexing the plurality of synchronization signals by performing time-division demultiplexing of at least one of the plurality of first synchronization signals and at least one of the plurality of second synchronization signals.   
     
     
         16 . The apparatus of  claim 15 , wherein the first transmission and the one or more repeat transmissions are transmitted in different directions. 
     
     
         17 . The apparatus of  claim 15 , wherein, within the first synchronization subframe, each of the first transmission and the one or more repeat transmissions are received using at least one of a plurality of antenna subarrays of the UE. 
     
     
         18 . The apparatus of  claim 15 , wherein the means for receiving the plurality of synchronization signals is further configured to:
 receive a second transmission by receiving a second group of the plurality of synchronization signals; and   receive one or more repeat transmissions of the second transmission, wherein each of the one or more repeat transmissions of the second transmission includes a repetition of the second transmission,   wherein the second transmission and the one or more repeat transmissions of the second transmission are received within a second synchronization subframe.   
     
     
         19 . The apparatus of  claim 18 , wherein the second group includes a beam reference signal (BRS), and wherein the BRS is frequency-division multiplexed with at least one of a physical broadcast channel (PBCH) signal, a primary synchronization signal (PSS), a secondary synchronization signal (SSS). 
     
     
         20 . The apparatus of  claim 15 , further comprising:
 means for receiving system information including an indication about whether the first transmission and the one or more repeat transmissions are to be transmitted in a same direction or in different directions.   
     
     
         21 . The apparatus of  claim 15 , wherein a duration of the first transmission and a duration of the at least one repeat transmission are based at least on a frame numerology of the wireless communication or are fixed values independent of the frame numerology. 
     
     
         22 . A non-transitory computer-readable medium storing computer executable code for wireless communication at a user equipment (UE), the code when executed by a processor cause the processor to:
 receive a plurality of synchronization signals, the plurality of synchronization signals including a plurality of first synchronization signals of different types and a plurality of second synchronization signals of different types, wherein reception of the plurality of synchronization signals comprises:
 reception of a first transmission by receiving a first group of the plurality of synchronization signals; and 
 reception of one or more repeat transmissions of the first transmission, wherein each of the one or more repeat transmissions of the first transmission includes a repetition of the first transmission, wherein the first transmission and the one or more repeat transmissions of the first transmission are received within a first synchronization subframe; and 
   demultiplex the plurality of synchronization signals by performing time-division demultiplexing of at least one of the plurality of first synchronization signals and at least one of the plurality of second synchronization signals.   
     
     
         23 . The computer-readable medium of  claim 22 , wherein the first transmission and the one or more repeat transmissions are transmitted in different directions. 
     
     
         24 . The computer-readable medium of  claim 22 , wherein, within the first synchronization subframe, each of the first transmission and the one or more repeat transmissions are received using at least one of a plurality of antenna subarrays of the UE. 
     
     
         25 . The computer-readable medium of  claim 22 , further comprising code to:
 receive a second transmission by receiving a second group of the plurality of synchronization signals; and   receive one or more repeat transmissions of the second transmission, wherein each of the one or more repeat transmissions of the second transmission includes a repetition of the second transmission,   wherein the second transmission and the one or more repeat transmissions of the second transmission are received within a second synchronization subframe.   
     
     
         26 . The computer-readable medium of  claim 25 , wherein the second group includes a beam reference signal (BRS), and
 wherein the BRS is frequency-division multiplexed with at least one of a physical broadcast channel (PBCH) signal, a primary synchronization signal (PSS), a secondary synchronization signal (SSS).   
     
     
         27 . The computer-readable medium of  claim 22 , further comprising code to:
 receive system information including an indication about whether the first transmission and the one or more repeat transmissions are to be transmitted in a same direction or in different directions.   
     
     
         28 . The computer-readable medium of  claim 22 , wherein a duration of the first transmission and a duration of the at least one repeat transmission are based at least on a frame numerology of the wireless communication or are fixed values independent of the frame numerology. 
     
     
         29 . A method of wireless communication at a base station, comprising:
 multiplexing a plurality of synchronization signals by performing time-division multiplexing of at least one of a plurality of first synchronization signals and at least one of a plurality of second synchronization signals; and   transmitting the plurality of synchronization signals, the plurality of synchronization signals including the plurality of the first synchronization signals of different types and the plurality of the second synchronization signals of different types, wherein the transmitting the plurality of synchronization signals comprises:
 transmitting a first transmission by transmitting a first group of the plurality of synchronization signals; and 
 transmitting one or more repeat transmissions of the first transmission, wherein each of the one or more repeat transmissions of the first transmission includes a repetition of the first transmission, wherein the first transmission and the one or more repeat transmissions of the first transmission are transmitted within a first synchronization subframe. 
   
     
     
         30 . The method of  claim 29 , wherein the first transmission and the one or more repeat transmissions are transmitted in different directions. 
     
     
         31 . The method of  claim 29 , wherein, within the first synchronization subframe, each of the first transmission and the one or more repeat transmissions are transmitted for reception with at least one of a plurality of antenna subarrays of a user equipment (UE). 
     
     
         32 . The method of  claim 29 , wherein the transmitting the plurality of synchronization signals further comprises:
 transmitting a second transmission by transmitting a second group of the plurality of synchronization signals; and   transmitting one or more repeat transmissions of the second transmission, wherein each of the one or more repeat transmissions of the second transmission includes a repetition of the second transmission,   wherein the second transmission and the one or more repeat transmissions of the second transmission are transmitted within a second synchronization subframe.   
     
     
         33 . The method of  claim 32 , wherein the second group includes a beam reference signal (BRS), and
 wherein the BRS is frequency-division multiplexed with at least one of a physical broadcast channel (PBCH) signal, a primary synchronization signal (PSS), a secondary synchronization signal (SSS).   
     
     
         34 . The method of  claim 29 , further comprising:
 transmitting system information including an indication about whether the first transmission and the one or more repeat transmissions are to be transmitted in a same direction or in different directions.   
     
     
         35 . The method of  claim 29 , wherein a duration of the first transmission and a duration of the at least one repeat transmission are based at least on a frame numerology of the wireless communication or are fixed values independent of the frame numerology. 
     
     
         36 . An apparatus for wireless communication at a base station, comprising:
 a memory; and   at least one processor coupled to the memory and configured to:
 multiplex a plurality of synchronization signals by performing time-division multiplexing of at least one of a plurality of first synchronization signals and at least one of a plurality of second synchronization signals; and 
 transmit the plurality of synchronization signals, the plurality of synchronization signals including the plurality of the first synchronization signals of different types and the plurality of the second synchronization signals of different types, wherein the transmitting the plurality of synchronization signals comprises:
 transmit a first transmission by transmitting a first group of the plurality of synchronization signals; and 
 transmit one or more repeat transmissions of the first transmission, wherein each of the one or more repeat transmissions of the first transmission includes a repetition of the first transmission, wherein the first transmission and the one or more repeat transmissions of the first transmission are transmitted within a first synchronization subframe. 
 
   
     
     
         37 . The apparatus of  claim 36 , wherein the first transmission and the one or more repeat transmissions are transmitted in different directions. 
     
     
         38 . The apparatus of  claim 36 , wherein, within the first synchronization subframe, each of the first transmission and the one or more repeat transmissions are transmitted for reception with at least one of a plurality of antenna subarrays of a user equipment (UE). 
     
     
         39 . The apparatus of  claim 36 , wherein the at least one processor is further configured to:
 transmit a second transmission by transmitting a second group of the plurality of synchronization signals; and   transmit one or more repeat transmissions of the second transmission, wherein each of the one or more repeat transmissions of the second transmission includes a repetition of the second transmission,   wherein the second transmission and the one or more repeat transmissions of the second transmission are transmitted within a second synchronization subframe.   
     
     
         40 . The apparatus of  claim 39 , wherein the second group includes a beam reference signal (BRS), and
 wherein the BRS is frequency-division multiplexed with at least one of a physical broadcast channel (PBCH) signal, a primary synchronization signal (PSS), a secondary synchronization signal (SSS).   
     
     
         41 . The apparatus of  claim 36 , wherein the at least one processor is further configured to:
 transmit system information including an indication about whether the first transmission and the one or more repeat transmissions are to be transmitted in a same direction or in different directions.   
     
     
         42 . The apparatus of  claim 36 , wherein a duration of the first transmission and a duration of the at least one repeat transmission are based at least on a frame numerology of the wireless communication or are fixed values independent of the frame numerology. 
     
     
         43 . An apparatus for wireless communication at a base station, comprising:
 means for multiplexing a plurality of synchronization signals by performing time-division multiplexing of at least one of a plurality of first synchronization signals and at least one of a plurality of second synchronization signals; and   means for transmitting the plurality of synchronization signals, the plurality of synchronization signals including the plurality of the first synchronization signals of different types and the plurality of the second synchronization signals of different types, wherein the means for transmitting the plurality of synchronization signals is configured to:
 transmit a first transmission by transmitting a first group of the plurality of synchronization signals; and 
 transmit one or more repeat transmissions of the first transmission, wherein each of the one or more repeat transmissions of the first transmission includes a repetition of the first transmission, wherein the first transmission and the one or more repeat transmissions of the first transmission are transmitted within a first synchronization subframe. 
   
     
     
         44 . The apparatus of  claim 43 , wherein the first transmission and the one or more repeat transmissions are transmitted in different directions. 
     
     
         45 . The apparatus of  claim 43 , wherein, within the first synchronization subframe, each of the first transmission and the one or more repeat transmissions are transmitted for reception with at least one of a plurality of antenna subarrays of a user equipment (UE). 
     
     
         46 . The apparatus of  claim 43 , wherein the means for transmitting the plurality of synchronization signals is further configured to:
 transmit a second transmission by transmitting a second group of the plurality of synchronization signals; and   transmit one or more repeat transmissions of the second transmission, wherein each of the one or more repeat transmissions of the second transmission includes a repetition of the second transmission,   wherein the second transmission and the one or more repeat transmissions of the second transmission are transmitted within a second synchronization subframe.   
     
     
         47 . The apparatus of  claim 46 , wherein the second group includes a beam reference signal (BRS), and
 wherein the BRS is frequency-division multiplexed with at least one of a physical broadcast channel (PBCH) signal, a primary synchronization signal (PSS), a secondary synchronization signal (SSS).   
     
     
         48 . The apparatus of  claim 43 , further comprising:
 means for transmitting system information including an indication about whether the first transmission and the one or more repeat transmissions are to be transmitted in a same direction or in different directions.   
     
     
         49 . The apparatus of  claim 43 , wherein a duration of the first transmission and a duration of the at least one repeat transmission are based at least on a frame numerology of the wireless communication or are fixed values independent of the frame numerology. 
     
     
         50 . A non-transitory computer-readable medium storing computer executable code for wireless communication at a base station, the code when executed by a processor cause the processor to:
 multiplex a plurality of synchronization signals by performing time-division multiplexing of at least one of a plurality of first synchronization signals and at least one of a plurality of second synchronization signals; and   transmit the plurality of synchronization signals, the plurality of synchronization signals including the plurality of the first synchronization signals of different types and the plurality of the second synchronization signals of different types, wherein the transmitting the plurality of synchronization signals comprises:   transmit a first transmission by transmitting a first group of the plurality of synchronization signals; and
 transmit one or more repeat transmissions of the first transmission, wherein each of the one or more repeat transmissions of the first transmission includes a repetition of the first transmission, wherein the first transmission and the one or more repeat transmissions of the first transmission are transmitted within a first synchronization subframe. 
   
     
     
         51 . The computer-readable medium of  claim 50 , wherein the first transmission and the one or more repeat transmissions are transmitted in different directions. 
     
     
         52 . The computer-readable medium of  claim 50 , wherein, within the first synchronization subframe, each of the first transmission and the one or more repeat transmissions are transmitted for reception with at least one of a plurality of antenna subarrays of a user equipment (UE). 
     
     
         53 . The computer-readable medium of  claim 50 , further comprising code to:
 transmit a second transmission by transmitting a second group of the plurality of synchronization signals; and   transmit one or more repeat transmissions of the second transmission, wherein each of the one or more repeat transmissions of the second transmission includes a repetition of the second transmission,   wherein the second transmission and the one or more repeat transmissions of the second transmission are transmitted within a second synchronization subframe.   
     
     
         54 . The computer-readable medium of  claim 53 , wherein the second group includes a beam reference signal (BRS), and
 wherein the BRS is frequency-division multiplexed with at least one of a physical broadcast channel (PBCH) signal, a primary synchronization signal (PSS), a secondary synchronization signal (SSS).   
     
     
         55 . The computer-readable medium of  claim 50 , further comprising code to:
 transmit system information including an indication about whether the first transmission and the one or more repeat transmissions are to be transmitted in a same direction or in different directions.   
     
     
         56 . The computer-readable medium of  claim 50 , wherein a duration of the first transmission and a duration of the at least one repeat transmission are based at least on a frame numerology of the wireless communication or are fixed values independent of the frame numerology.
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