Method and apparatus for indicating uplink-downlink carrier frequency spacing, and method and apparatus for obtaining uplink-downlink carrier frequency spacing
First Claim
1. A method for obtaining an uplink-downlink carrier frequency spacing, wherein the method is applied to an Narrowband Internet of Things (NB-IoT) system, and comprises:
- initiating, by a terminal device (UE), a request in a first cell to access an NB-IoT, and receiving an indication message sent by a base station, wherein the indication message is used to indicate an uplink-downlink carrier frequency spacing corresponding to the first cell; and
determining, by the UE according to the indication information, the uplink-downlink carrier frequency spacing corresponding to the first cell, whereinwhen the UE determines that the indication information carries an uplink-downlink basic carrier frequency spacing corresponding to a frequency band used by the first cell, an index number corresponding to a first carrier frequency deviation in a first carrier frequency deviation set, and a difference between index numbers of uplink and downlink physical resource blocks used by the first cell, determining, by the LE, the first carrier frequency deviation according to the index number corresponding to the first carrier frequency deviation in the first carrier frequency deviation set.
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Accused Products
Abstract
This disclosure relates to the field of communications technologies, and in particular, to a method and an apparatus for obtaining an uplink-downlink carrier frequency spacing. The method for obtaining an uplink-downlink carrier frequency spacing may include initiating, by user equipment (UE), a request in a first cell to access an NB-IoT, and receiving an indication message sent by a base station. The method may also include determining, by the UE according to the indication information, an uplink-downlink carrier frequency spacing corresponding to the first cell. Therefore, the base station can notify the UE of the uplink-downlink carrier frequency spacing corresponding to the first cell, so that the terminal obtains a correct uplink carrier frequency.
13 Citations
20 Claims
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1. A method for obtaining an uplink-downlink carrier frequency spacing, wherein the method is applied to an Narrowband Internet of Things (NB-IoT) system, and comprises:
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initiating, by a terminal device (UE), a request in a first cell to access an NB-IoT, and receiving an indication message sent by a base station, wherein the indication message is used to indicate an uplink-downlink carrier frequency spacing corresponding to the first cell; and determining, by the UE according to the indication information, the uplink-downlink carrier frequency spacing corresponding to the first cell, wherein when the UE determines that the indication information carries an uplink-downlink basic carrier frequency spacing corresponding to a frequency band used by the first cell, an index number corresponding to a first carrier frequency deviation in a first carrier frequency deviation set, and a difference between index numbers of uplink and downlink physical resource blocks used by the first cell, determining, by the LE, the first carrier frequency deviation according to the index number corresponding to the first carrier frequency deviation in the first carrier frequency deviation set. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus for obtaining an uplink-downlink carrier frequency spacing, wherein the apparatus is applied to an Narrowband Internet of Things (NB-IoT) system, and comprises:
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a transceiver, configured to;
initiate a request in a first cell to access an NB-IoT, and receive an indication message sent by a base station, wherein the indication message is used to indicate an uplink-downlink carrier frequency spacing corresponding to the first cell; anda processor, configured to determine, according to the indication information, the uplink-downlink carrier frequency spacing corresponding to the first cell, wherein when the processor determines that the indication information carries an uplink-downlink basic carrier frequency spacing corresponding to a frequency band used by the first cell, an index number corresponding to a first carrier frequency deviation in a first carrier frequency deviation set, and a difference between index numbers of uplink and downlink physical resource blocks used by the first cell, the processor further configured to determine the first carrier frequency deviation according to the index number corresponding to the first carrier frequency deviation in the first carrier frequency deviation set. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A computer program product comprising non-transitory computer readable medium comprising instructions which, when executed by a computer, cause the computer to carry out operations that perform a method for obtaining an uplink-downlink carrier frequency spacing, wherein the method is applied to an Narrowband Internet of Things (NB-IoT) system, the operations comprising:
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initiating a request in a first cell to access an NB-IoT, and receiving an indication message sent by a base station, wherein the indication message is used to indicate an uplink-downlink carrier frequency spacing corresponding to the first cell; and determining, according to the indication information, the uplink-downlink carrier frequency spacing corresponding to the first cell, wherein in response to a that the indication information carries an uplink-downlink basic carrier frequency spacing corresponding to a frequency band used by the first cell, an index number corresponding to a first carrier frequency deviation in a first carrier frequency deviation set, and a difference between index numbers of uplink and downlink physical resource blocks used by the first cell, determining the first carrier frequency deviation according to the index number corresponding to the first carrier frequency deviation in the first carrier frequency deviation set.
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Specification