Method and apparatus of transmitting reference signal for uplink transmission
AssigneeLG Electronics Inc.
InventorsByoung-Hoon Kim, Dae Won Lee, Byeongwoo Kang, Bong Hoe Kim, Yujin Noh
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Abstract
A method and apparatus of transmitting a reference signal in a wireless communication system is provided. The method includes generating a precoded reference signal or a non-precoded reference signal in accordance with a rank, and transmitting the generated reference signal. Uplink transmission using multiple transmit antennas is supported through reference signal design and related control signaling.
Claims12
A method of transmitting a signal in a mobile communication system, the method performed in a single user equipment (UE) and comprising:
- receiving control information via a physical downlink control channel (PDCCH);
- and
- transmitting, in response to the control information, reference signals through a plurality of transmit antennas including a first transmit antenna and a second transmit antenna using a plurality of cyclic shifts including at least one pair of available cyclic shift pairs, each pair of the available cyclic shift pairs comprising a first cyclic shift n1 for the first transmit antenna and a second cyclic shift n2 for the second transmit antenna, the plurality of transmit antennas being used by the single UE,
- wherein the first cyclic shift n1 and the second cyclic shift n2 in the single UE are determined based on the control information, n1 and n2 contained in one pair of the available cyclic shift pairs are different from cyclic shift n1 and n2 contained in another pair of the available cyclic shift pairs, respectively, and an interval between the n1 and n2 in each pair of the available cyclic shift pairs is set to a same value.
A user equipment (UE) in a wireless communication system, the UE comprising:
- a receiver configured to receive control information via a physical downlink control channel (PDCCH);
- and
- a transmitter configured to transmit, in response to the control information, reference signals through a plurality of transmit antennas including a first transmit antenna and a second transmit antenna using a plurality of cyclic shifts including at least one pair of available cyclic shift pairs, each pair of the available cyclic shift pairs comprising a first cyclic shift n1 for the first transmit antenna and a second cyclic shift n2 for the second transmit antenna, the plurality of transmit antennas being used by the UE,
- wherein the first cyclic shift n1 and the second cyclic shift n2 in the UE are determined based on the control information, n1 and n2 contained in one pair of the available cyclic shift pairs are different from cyclic shift n1 and n2 contained in another pair of the available cyclic shift pairs, respectively, and an interval between the n1 and n2 in each pair of the available cyclic shift pairs is set to a same value.
Dependencies are inferred from the claim text.