Synchronization techniques using frequency hopping in unlicensed radio frequency spectrum
First Claim
1. A method for wireless communication, comprising:
- receiving, on a first hop frequency of a plurality of available hop frequencies in an unlicensed radio frequency spectrum band, two or more synchronization signals from a first base station;
identifying a first synchronization signal of the first base station based at least in part on the received two or more synchronization signals;
identifying, on the first hop frequency, a second synchronization signal of the first base station based at least in part on a periodicity of synchronization signal transmissions on one or more hop frequencies of the plurality of available hop frequencies; and
identifying a hopping pattern of the first base station based at least in part on the received first synchronization signal and a physical channel signal of the first base station.
1 Assignment
0 Petitions
Accused Products
Abstract
Described techniques provide for transmission of synchronization signals using frequency hopping across a number of hopping frequencies in unlicensed or shared radio frequency spectrum. A base station may identify a set of hop frequencies for transmitting synchronization signals, and transmit synchronization signals using a hopping pattern over the hop frequencies. A user equipment (UE) seeking to identify the base station may monitor one or more of the hop frequencies to identify one or more synchronization signals on the hop frequency. A system timing may be identified in some cases, and one or more base station IDs may be identified. In some cases, a hop frequency may be monitored for a duration that may span the transmission of two or more synchronization signals of a particular base station, based on a periodicity of synchronization signal transmissions on each hop frequency.
2 Citations
20 Claims
-
1. A method for wireless communication, comprising:
-
receiving, on a first hop frequency of a plurality of available hop frequencies in an unlicensed radio frequency spectrum band, two or more synchronization signals from a first base station; identifying a first synchronization signal of the first base station based at least in part on the received two or more synchronization signals; identifying, on the first hop frequency, a second synchronization signal of the first base station based at least in part on a periodicity of synchronization signal transmissions on one or more hop frequencies of the plurality of available hop frequencies; and identifying a hopping pattern of the first base station based at least in part on the received first synchronization signal and a physical channel signal of the first base station. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A method for wireless communication, comprising:
-
receiving, on a first hop frequency of a plurality of available hop frequencies in an unlicensed radio frequency spectrum band, two or more synchronization signals from a first base station; identifying a first synchronization signal of the first base station based at least in part on the received two or more synchronization signals; identifying, on the first hop frequency, a second synchronization signal of the first base station based at least in part on a periodicity of synchronization signal transmissions on one or more hop frequencies of the plurality of available hop frequencies; identifying a third synchronization signal of a second base station based at least in part on the received two or more synchronization signals; and determining a system timing based at least in part on the first synchronization signal and the third synchronization signal.
-
-
7. A method for wireless communication, comprising:
-
receiving, on a first hop frequency of a plurality of available hop frequencies in an unlicensed radio frequency spectrum band, two or more synchronization signals from a first base station; identifying a first synchronization signal of the first base station based at least in part on the received two or more synchronization signals; identifying a periodicity of synchronization signal transmissions based on a duty cycle for synchronization signal transmissions on at least a subset of the plurality of available hop frequencies; and identifying, on the first hop frequency, a second synchronization signal of the first base station based at least in part on the periodicity of synchronization signal transmissions. - View Dependent Claims (8, 9, 10)
-
-
11. An apparatus for wireless communication, comprising:
-
a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to; receive, on a first hop frequency of a plurality of available hop frequencies in an unlicensed radio frequency spectrum band, two or more synchronization signals from a first base station; identify a first synchronization signal of the first base station based at least in part on the received two or more synchronization signals; identify, on the first hop frequency, a second synchronization signal of the first base station based at least in part on a periodicity of synchronization signal transmissions on one or more hop frequencies of the plurality of available hop frequencies; and identify a hopping pattern of the first base station based at least in part on the received first synchronization signal and a physical channel signal of the first base station. - View Dependent Claims (12, 13, 14, 15)
-
-
16. An apparatus for wireless communication, comprising:
-
a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to; receive, on a first hop frequency of a plurality of available hop frequencies in an unlicensed radio frequency spectrum band, two or more synchronization signals from a first base station; identify a first synchronization signal of the first base station based at least in part on the received two or more synchronization signals; identify a periodicity of synchronization signal transmissions based on a duty cycle for synchronization signal transmissions on at least a subset of the plurality of available hop frequencies; and identify, on the first hop frequency, a second synchronization signal of the first base station based at least in part on the periodicity of synchronization signal transmissions. - View Dependent Claims (17, 18, 19)
-
-
20. An apparatus for wireless communication, comprising:
-
a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to; receive, on a first hop frequency of a plurality of available hop frequencies in an unlicensed radio frequency spectrum band, two or more synchronization signals from a first base station; identify a first synchronization signal of the first base station based at least in part on the received two or more synchronization signals; identify, on the first hop frequency, a second synchronization signal of the first base station based at least in part on a periodicity of synchronization signal transmissions on one or more hop frequencies of the plurality of available hop frequencies; identify a third synchronization signal of a second base station based at least in part on the received two or more synchronization signals; and determine a system timing based at least in part on the first synchronization signal and the third synchronization signal.
-
Specification