Communication unit and method for selective frequency synchronization in a cellular communication network
First Claim
1. A communication unit comprising:
- a receiver configured to receive radio frequency (RF) signals from at least one wireless serving communication unit; and
a signal processing logic module arranged o decode transmit power information from a received RF signal sent by the at least one wireless serving communication unit, the signal processing logic module arranged to;
determine from the decoded transmit power information whether a transmission from the at least one wireless serving communication unit is suitable for use as a timing reference; and
if it is determined that the transmission is suitable for use as a timing reference, to synchronize an operating frequency of the communication unit to the received RF signal of the at least one wireless serving communication unit.
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Accused Products
Abstract
A communication unit comprises a receiver for receiving radio frequency (RF) signals from at least one wireless serving communication unit, and signal processing logic module arranged to decode information within the received RF signals is the at least one wireless serving communication unit. The signal processing logic module is further arranged to decode transmit power information in a received RF signal from the at least one wireless serving communication unit, and determine from the decoded transmit power information whether a transmission from the at least one wireless serving communication unit is suitable for use as a timing reference. If it is determined that the transmission from the at least one wireless serving communication unit is suitable for use as a timing reference, the communication unit synchronizes an operating frequency to the received RF signal of the at least one wireless serving communication unit.
73 Citations
23 Claims
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1. A communication unit comprising:
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a receiver configured to receive radio frequency (RF) signals from at least one wireless serving communication unit; and a signal processing logic module arranged o decode transmit power information from a received RF signal sent by the at least one wireless serving communication unit, the signal processing logic module arranged to; determine from the decoded transmit power information whether a transmission from the at least one wireless serving communication unit is suitable for use as a timing reference; and if it is determined that the transmission is suitable for use as a timing reference, to synchronize an operating frequency of the communication unit to the received RF signal of the at least one wireless serving communication unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21)
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20. An integrated circuit comprising:
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a logic for receiving a radio frequency (RF) signal from at least one wireless serving communication unit; a logic for decoding transmit power information from a received RF signal; a logic for determining from the decoded transmit power information whether a transmission from the at least one wireless serving communication unit is suitable for use as a timing reference; and a logic for synchronizing an operating frequency of the communication unit to the received RF signal of the at least one wireless serving communication unit.
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22. A method for frequency synchronizing a wireless communication unit, the method comprising:
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receiving a Radio Frequency (RF) signal from at least one wireless serving communication unit; decoding transmit power information from a received RF signal; determining from the decoded transmit power information whether a transmission from the at least one wireless serving communication unit is suitable for use as a timing reference; and if it is determined that the transmission is suitable for use as a timing reference, synchronizing an operating frequency to the received RF signal of the at least one wireless serving communication unit.
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23. A non-transitory computer-readable medium having computer-readable code stored thereon for programming signal processing logic module to perform a method for frequency synchronising a wireless communication unit, the code operable for at the wireless communication unit:
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receiving a Radio Frequency (RF) signal from at least one wireless serving communication unit; decoding transmit power information from a received RF signal; determining from the decoded transmit power information whether a transmission from the at least one wireless serving communication unit is suitable for use as a timing reference; and if it is determined that the transmission is suitable for use as a timing reference, synchronising an operating frequency to the received RF signal of the at least one wireless serving communication unit.
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Specification