Control mechanism for communication via different frequency bands
First Claim
1. An apparatus comprising:
- circuitry configured togenerate a preamble transmission command comprising instruction for causing transmission of a preamble signal on a first communication path, and to cause transmission of the preamble transmission command on a second communication path being different to the first communication path; and
detect whether the preamble signal instructed by the preamble transmission command is received via the first communication path within a predetermined period of time after the preamble transmission command is transmitted.
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Accused Products
Abstract
There is provided a mechanism for controlling communications conducted via different frequency bands or communication spectrums. When a communication via a first communication path, for example an unlicensed or white space communication spectrum, is to be established, e.g. for offloading traffic from a second communication path, for example a licensed cellular communication spectrum, a preamble transmission command is generated and transmitted from a communication network control element, such as an eNB, via the second communication path to a communication element, such as a UE. By means of the preamble transmission command, the transmission of a preamble signal by the receiving communication element on the first communication path with predetermined communication resources is triggered. Based on a receipt or non-receipt of the preamble signal via the first communication path, the communication network control element is able to determine that the communication element can establish a connection on the first communication path, for example the unlicensed or white space communication spectrum.
8 Citations
18 Claims
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1. An apparatus comprising:
circuitry configured to generate a preamble transmission command comprising instruction for causing transmission of a preamble signal on a first communication path, and to cause transmission of the preamble transmission command on a second communication path being different to the first communication path; and detect whether the preamble signal instructed by the preamble transmission command is received via the first communication path within a predetermined period of time after the preamble transmission command is transmitted. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus
circuitry configured to generate a preamble transmission command comprising instruction for causing transmission of a preamble signal on a first communication path, and to cause transmission of the preamble transmission command on a second communication path being different to the first communication path; -
introduce in the preamble transmission command an indication for one of an aperiodical signaling of the preamble signal or a periodical signaling of the preamble signal; and detect whether the preamble signal instructed by the preamble transmission command is received via the first communication path.
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10. A method comprising
generating a preamble transmission command comprising instruction for causing transmission of a preamble signal on a first communication path; -
transmitting the preamble transmission command on a second communication path being different to the first communication path; and detecting whether the preamble signal instructed by the preamble transmission command is received via the first communication path within a predetermined period of time after the preamble transmission command is transmitted. - View Dependent Claims (11, 12)
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13. An apparatus comprising:
circuitry configured to receive and process a preamble transmission command comprising instruction for causing transmission of a preamble signal on a first communication path, wherein the preamble transmission command is received via a second communication path being different to the first communication path and indicates one of an aperiodical signaling of the preamble signal or a periodical signaling of the preamble signal; and cause transmitting of a preamble signal aperiodically or periodically according to the indication via the first communication path according to the instruction of the preamble transmission command. - View Dependent Claims (14, 15, 16, 17, 18)
Specification