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US 8,509,178 B2Granted
Method of transmitting scheduling request in a wireless communication system
AssigneeLG Electronics Inc.
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.
Claims16
A method for requesting uplink resources in a wireless communication system, the method comprising:
- determining, by a user equipment, whether a scheduling request for requesting uplink resources to be used for uplink data transmission is triggered;
- if the scheduling request is triggered, generating, by the user equipment, a first set of frequency domain sequences and a second set of frequency domain sequences to represent a transmission of the scheduling request;
- and
- transmitting, by the user equipment, the first set of frequency domain sequences and the second set of frequency domain sequences in a subframe to a base station,
- wherein the subframe includes a first slot and a second slot, each of the first and second slot including a plurality of orthogonal frequency division multiplexing (OFDM) symbols,
- wherein frequency domain sequences in the first set of frequency domain sequences are generated by cyclically shifting a base sequence based on each cyclic shift amount at respective OFDM symbol of the first slot;
- wherein frequency domain sequences in the second set of frequency domain sequences are generated by cyclically shifting the base sequence based on each cyclic shift amount at respective OFDM symbol of the second slot;
- wherein subcarriers associated with the first set of the frequency domain sequences in the first slot are different from subcarriers associated with the second set of the frequency domain sequences in the second slot;
- and
- wherein the first set of frequency domain sequences is transmitted over the first slot and the second set of frequency domain sequences is transmitted over the second slot.
7 more elements
A user equipment for requesting uplink resources in a wireless communication system, comprising a processor configured to:
- determine, by the user equipment, whether a scheduling request for requesting uplink resources to be used for uplink data transmission is triggered;
- if the scheduling request is triggered, generate, by the user equipment, a first set of frequency domain sequences and a second set of frequency domain sequences to represent a transmission of the scheduling request;
- and
- transmit, by the user equipment, the first set of frequency domain sequences and the second set of frequency domain sequences in a subframe to a base station,
- wherein the subframe includes a first slot and a second slot, each of the first and second slot including a plurality of orthogonal frequency division multiplexing (OFDM) symbols,
- wherein frequency domain sequences in the first set of frequency domain sequences are generated by cyclically shifting a base sequence based on each cyclic shift amount at respective OFDM symbol of the first slot;
- wherein frequency domain sequences in the second set of frequency domain sequences are generated by cyclically shifting the base sequence based on each cyclic shift amount at respective OFDM symbol of the second slot;
- wherein subcarriers associated with the first set of the frequency domain sequences in the first slot are different from subcarriers associated with the second set of the frequency domain sequences in the second slot;
- and
- wherein the first set of frequency domain sequences is transmitted over the first slot and the second set of frequency domain sequences is transmitted over the second slot.
7 more elements
Dependencies are inferred from the claim text.