Signal processing method, access network equipment and terminal equipment
A technology for access network equipment and terminal equipment, applied in the field of communication, can solve the problems of damaged channel estimation performance in transform domain, affecting uplink data demodulation performance, etc., and achieve the effect of improving accuracy
Active Publication Date: 2020-03-17
SHANGHAI HUAWEI TECH CO LTD
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Problems solved by technology
[0004] However, when the terminal device processes the uplink data in a subband precoding manner, and sends the uplink data and the precoded demodulation reference signal to the access network device, the base station receives the precoding data corresponding to each subband. For the processed uplink data, the process of equivalent channel estimation in different sub-bands is carried out separately, which leads to the loss of the performance of the base station in transform domain channel estimation and affects the demodulation performance of uplink data
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Embodiment Construction
[0031] Embodiments of the present application provide a signal processing method, an access network device, and a terminal device, which are used to improve the accuracy of channel estimation and the performance of channel equalization.
[0032] see figure 1 , figure 1 It is a schematic diagram of an application scenario system framework provided by the embodiment of this application. In order to perform channel estimation and channel equalization, at present, the terminal device transparently sends the demodulation reference signal within the bandwidth scheduled by the access network device to the access network device. The specific process is: the terminal device inserts the demodulation reference signal into the In the uplink data to be sent, the uplink data is precoded through the precoding matrix, and then the terminal device maps the precoded uplink data to the corresponding sending port, and then sends it to the access network device, and then receives The network acces...
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The embodiment of the invention discloses a signal processing method. The method provided by the embodiment of the invention comprises the following steps: access network equipment sends indication information to terminal equipment; and when the indication information indicates that the terminal equipment sends a demodulation reference signal which is not pre-coded and corresponds to each sub-bandand pre-coded uplink data of each sub-band pair to the access network equipment, sending the pre-coded uplink data to the access network equipment, enabling the access network equipment to receive ademodulation reference signal which is not pre-coded of each sub-band and uplink data which is pre-coded of each sub-band and is sent by the terminal equipment; enabling the access network equipment to determine a channel response coefficient matrix of each sub-band according to the demodulation reference signal which is not pre-coded of each sub-band; enabling the access network equipment to calculate an uplink equivalent channel matrix according to the channel response coefficient matrix of each sub-band and the precoding matrix of each sub-band; and enabling the access network equipment toacquire original uplink data in the full bandwidth according to the uplink equivalent channel matrix of each sub-band and the uplink data subjected to precoding processing of each sub-band.
Description
technical field [0001] The present application relates to communication technologies, and in particular to a signal processing method, access network equipment and terminal equipment. Background technique [0002] With the development of communication technology, users have higher and higher requirements on the transmission quality of data transmission. [0003] At present, in order to improve the transmission performance of the communication system in a fading channel, the terminal equipment performs precoding processing on the demodulation reference signal and the uplink data of the corresponding port through the same precoding matrix and then sends it to the base station side, and the base station side passes the precoding processing Channel estimation is performed using the demodulated reference signal to determine an uplink equivalent channel, and then channel equalization is performed to improve the quality of data transmission. [0004] However, when the terminal dev...
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IPC IPC(8): H04L5/00H04L25/02H04B7/0456
CPCH04L5/0053H04B7/0456H04L25/0202H04L5/0048
Inventor 刘斌越沈勇武
Owner SHANGHAI HUAWEI TECH CO LTD