Method for allocating pilots
First Claim
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1. In a wireless communication network, a method for transmitting pilots in a sub-frame, the sub-frame including a plurality of symbols, the method performed by a user equipment (UE) and comprising:
- transmitting a first pilot signal to a base station (BS), wherein the first pilot signal is used for demodulating a signal transmitted by a first symbol and a second symbol of the sub-frame, wherein a first resource transmitting the first pilot signal of the first symbol is different from a second resource transmitting the first pilot signal of the second symbol, andtransmitting a second pilot signal different from the first pilot signal to the BS, wherein the second pilot signal is used for measuring channel quality associated with at least one symbol of the sub-frame, wherein the second pilot signal measuring the channel quality is transmitted in a last symbol of the sub-frame,wherein the first resource includes a first frequency band at which the first pilot signal of the first symbol is transmitted, and the second resource includes a second frequency band at which the first pilot signal of the second symbol is transmitted.
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Abstract
This is provided a method for allocating pilots to a sub-frame. The sub-frame includes a plurality of blocks in time domain. The method includes allocating a data demodulation (DM) pilot used for demodulating data to two blocks spaced not contiguous with each other, and allocating a channel quality (CQ) pilot. System capacity can be increased, and degradation of performance incurred by a channel estimation error can be minimized.
18 Citations
14 Claims
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1. In a wireless communication network, a method for transmitting pilots in a sub-frame, the sub-frame including a plurality of symbols, the method performed by a user equipment (UE) and comprising:
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transmitting a first pilot signal to a base station (BS), wherein the first pilot signal is used for demodulating a signal transmitted by a first symbol and a second symbol of the sub-frame, wherein a first resource transmitting the first pilot signal of the first symbol is different from a second resource transmitting the first pilot signal of the second symbol, and transmitting a second pilot signal different from the first pilot signal to the BS, wherein the second pilot signal is used for measuring channel quality associated with at least one symbol of the sub-frame, wherein the second pilot signal measuring the channel quality is transmitted in a last symbol of the sub-frame, wherein the first resource includes a first frequency band at which the first pilot signal of the first symbol is transmitted, and the second resource includes a second frequency band at which the first pilot signal of the second symbol is transmitted. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. In a wireless communication network, an user equipment (UE) comprising:
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a transmitter configured for transmitting pilots in a sub-frame, the sub-frame including a plurality of symbols, the transmitter being further configured for; transmitting a first pilot signal which is used for demodulating a signal transmitted by a first symbol and a second symbol of the sub-frame, wherein a first resource transmitting the first pilot signal of the first symbol is different from a second resource transmitting the first pilot signal of the second symbol, and transmitting a second pilot signal different from the first pilot signal, wherein the second pilot signal is used for measuring channel quality associated with at least one symbol of the sub-frame, wherein the second pilot signal measuring the channel quality is transmitted in a last symbol of the sub-frame, wherein the first resource includes a first frequency band at which the first pilot signal of the first symbol is transmitted, and the second resource includes a second frequency band at which the first pilot signal of the second symbol is transmitted. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification