Method of transmitting scheduling request in a wireless communication system
AssigneeMicrosoft Technology Licensing, LLC
InventorsYeong Hyeon Kwon, Seung Hee Han, Hyun Woo Lee, Jae Hoon Chung, Jin Sam Kwak, Dong Cheol Kim, Min Seok Noh
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Abstract
A method and apparatus for requesting uplink resources in a wireless communication system is provided. A user equipment determines whether a scheduling request for requesting uplink resources is triggered. If the scheduling request is triggered, the user equipment transmits a first set of frequency domain sequences and a second set of frequency domain sequences in a subframe.
Claims14
A method of transmitting a scheduling request in a wireless communication system, the method comprising:
- determining a subframe for transmitting the scheduling request, the subframe comprising two consecutive slots, each slot comprising a first set of single carrier-frequency division multiple access (SC-FDMA) and a second set of SC-FDMA symbols, wherein the subframe is determined among subframes that belong to a transmission period of the scheduling request;
- configuring an uplink control channel for transmitting the scheduling request;
- and
- transmitting the scheduling request on the uplink control channel in the subframe;
- wherein configuring the uplink control channel comprises, for the SC-FDMA symbols in each slot:
- mapping a corresponding one of a plurality of frequency domain sequences to each SC-FDMA symbol in the first set of SC-FDMA symbols, thereby generating a first set of mapped frequency domain sequences;
- mapping a corresponding one of the plurality of frequency domain sequences to each SC-FDMA symbol in the second set of SC-FDMA symbols, thereby generating a second set of mapped frequency domain sequences;
- spreading the first set of mapped frequency domain sequences with a first orthogonal sequence, the first orthogonal sequence having a length equal to the number of SC-FDMA symbols in the first set of SC-FDMA symbols;
- and
- spreading the second set of mapped frequency domain sequences associated with each of the SC-FDMA symbols in the second set of SC-FDMA symbols with a second orthogonal sequence, the second orthogonal sequence having a length equal to the number of SC-FDMA symbols in the second set of SC-FDMA symbols.
A user equipment configured for transmitting a scheduling request in a wireless communication system, the user equipment comprising circuitry configured to:
- determine a subframe for transmitting the scheduling request, the subframe comprising two consecutive slots, each slot comprising a first set of single carrier-frequency division multiple access (SC-FDMA) and a second set of SC-FDMA symbols, wherein the subframe is determined among subframes that belong to a transmission period of the scheduling request;
- configure an uplink control channel for transmitting the scheduling request;
- and
- transmit the scheduling request on the uplink control channel in the subframe;
- wherein configuring the uplink control channel comprises, for the SC-FDMA symbols in each slot:
- mapping a corresponding one of a plurality of frequency domain sequences to each SC-FDMA symbol in the first set of SC-FDMA symbols, thereby generating a first set of mapped frequency domain sequences;
- mapping a corresponding one of the plurality of frequency domain sequences to each SC-FDMA symbol in the second set of SC-FDMA symbols, thereby generating a second set of mapped frequency domain sequences;
- spreading the first set of mapped frequency domain sequences with a first orthogonal sequence, the first orthogonal sequence having a length equal to the number of SC-FDMA symbols in the first set of SC-FDMA symbols;
- and
- spreading the second set of mapped frequency domain sequences associated with each of the SC-FDMA symbols in the second set of SC-FDMA symbols with a second orthogonal sequence, the second orthogonal sequence having a length equal to the number of SC-FDMA symbols in the second set of SC-FDMA symbols.
Dependencies are inferred from the claim text.