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Channel estimation method, reference signal transmission method, device and system

A technology of reference signal and channel estimation, applied in the field of communication, can solve the problems of reduced throughput of communication system and increase of wireless resource overhead, etc., to achieve the effects of ensuring throughput, improving performance, and reducing wireless resource overhead

Active Publication Date: 2020-09-08
HUAWEI TECH CO LTD
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Problems solved by technology

[0005] In order to solve the problem of using more resources to send reference signals in order to obtain a better channel estimation effect, resulting in an increase in wireless resource overhead and a decrease in the throughput of the communication system, an embodiment of the present invention provides a channel estimation method, a reference Signal transmission method, device and system

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  • Channel estimation method, reference signal transmission method, device and system
  • Channel estimation method, reference signal transmission method, device and system
  • Channel estimation method, reference signal transmission method, device and system

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Embodiment Construction

[0168] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0169] The "module" mentioned in this article refers to the program or instruction that can realize certain functions stored in the memory; the "unit" mentioned in this article refers to a functional structure divided according to logic, and the "unit" can be composed of Pure hardware implementation, or a combination of software and hardware.

[0170] The "plurality" mentioned herein means two or more. "And / or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and / or B may indicate: A exists alone, A and B exist simultaneously, and B exists independently. The character " / " generally indicates that the contextual objects are an "or" relationship.

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Abstract

The invention discloses a channel estimation method, a reference signal sending method, a device and a system, which belong to the field of communication. The method includes: when the first precoding weight of the first reference signal and the second precoding weight of the second reference signal are the same, the first network device receives the first reference signal according to the first pattern in the first time unit, The second reference signal is received in the second time unit according to the second pattern; the first network device performs channel estimation on the channel in the second time unit according to the first reference signal and the second reference signal; When the channel estimation effect is achieved, more resources are used to send the reference signal, which leads to the increase of the wireless resource overhead and the decrease of the throughput of the communication system; the channel estimation effect is optimized and the wireless resource overhead is reduced. The effect of improving the performance of the communication system.

Description

technical field [0001] The embodiments of the present invention relate to the communication field, and in particular, to a channel estimation method, a reference signal sending method, device and system. Background technique [0002] In a Long Term Evolution (LTE) system, a demodulation reference signal (Demodulation Reference Signal, DMRS) is a downlink reference signal sent by a base station to a user equipment (User Equipment, UE). The UE may perform channel estimation on a physical resource block (Physical Resource Block, PRB) according to the DMRS, and demodulate data on the physical resource block according to the channel estimation result. [0003] DMRS needs to be transmitted at a higher density in order to obtain a better channel estimation effect. In the LTE specification, the DMRS has two optional time-frequency distribution patterns (patterns) in one physical resource block. One PRB includes two time slots, and each time slot includes 7 or 6 symbols in the time...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/02
CPCH04L25/022H04L25/0224H04L25/0232H04W72/04H04L5/0048H04L25/0226H04L5/005H04L5/0051H04L5/0007H04B7/0456H04B7/0615H04L5/0041H04L25/0204
Inventor 刘鹍鹏张荻
Owner HUAWEI TECH CO LTD
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