Estimation method, sending device and receiving device for uplink channel
A technology of channel estimation and sending device, which is applied in the field of uplink channel estimation, and can solve the problems of lowering system performance, lowering the quality of uplink data transmission, and reducing transmission power, etc.
Inactive Publication Date: 2015-04-29
HUAWEI TECH CO LTD
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Problems solved by technology
Due to the reduction of DPCCH transmission power, after increasing the transmission rate of uplink data, it is difficult for DPCCH to meet the performance requirements for channel estimation of E-DPDCH, thereby reducing the transmission quality of uplink data and system performance
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[0071] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0072] An embodiment of the present invention provides a method for estimating an uplink channel, which is used for a transmitting end in an uplink packet access system, such as a user equipment UE, wherein the uplink packet access system includes: at least one data channel, accompanied by at least one The first control channel of the data channel, and the pilot channel, the first control channel carries control information, and the pilot channel carries bit in...
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Embodiments of the present invention relate to the technical field of wireless communications. Disclosed are a method for uplink channel estimation, a transmitter device, and a receiver device, capable of ensuring a performance requirement when conducting channel estimation with respect to a physical data channel while also preventing uplink outer loop power control from being affected, thus increasing transmission quality of uplink data, and increasing system performance. The method of the present invention comprises: a current enhanced transport format combination indicator (E-TFCI) is acquired, where the E-TFCI is used for indicating the size of a transport block currently being transported in at least one data channel; if the E-TFCI is greater than a first threshold value, then control information and second pilot frequency information are transmitted at a first transmission power on a second control channel to replace a first control channel in bearing control information and in bearing a second pilot frequency information, where the second pilot frequency information is used for being combined with first pilot frequency information to conduct channel estimation, the first transmission power is greater than a third transmission power of the first control channel. The present application is applicable in increasing the performance of channel estimation.
Description
technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method for estimating an uplink channel, a sending device and a receiving device. Background technique [0002] With the advancement of wireless communication technology, increasing the transmission rate of uplink data has become an inevitable trend. The most commonly used method to increase the transmission rate of uplink data is to apply 16QAM (Quadrature Amplitude Modulation, quadrature amplitude modulation) or 64QAM technologies to the transmission process of the uplink channel to increase the TB (Transport Block, transmission block) of uplink transmission. ) size, thereby increasing the uplink data transmission rate. [0003] However, as the data transmission rate increases, the requirements for the pilot channel are also higher. For example, after the actual application of 16QAM, due to the increase in the size of the TB block sent in the uplink, ...
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IPC IPC(8): H04L25/02H04W52/12H04W52/14
CPCH04W52/262H04W52/12H04W52/146
Inventor 胡文权焦淑蓉花梦
Owner HUAWEI TECH CO LTD