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Method for sending and receiving DRS (Dedicated Reference Signal), base station and user equipment

A reference signal and user terminal technology, applied in the fields of sending and receiving dedicated reference signals, base stations and user terminals, can solve problems such as inability to distinguish DRS and inaccurate demodulation of users, and achieve the effect of ensuring normal transmission and avoiding transmission conflicts

Inactive Publication Date: 2010-12-29
BEIJING SAMSUNG TELECOM R&D CENT +1
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  • Application Information

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Problems solved by technology

However, for multi-user MIMO (MU-MIMO), multiple users used for MU-MIMO may use the same PRB at the same time. According to the above method, the DRS of each user cannot be distinguished, so that each user cannot accurately resolve the downlink data. tune, and there is no reasonable method for DRS transmission for MU-MIMO in the prior art

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  • Method for sending and receiving DRS (Dedicated Reference Signal), base station and user equipment
  • Method for sending and receiving DRS (Dedicated Reference Signal), base station and user equipment
  • Method for sending and receiving DRS (Dedicated Reference Signal), base station and user equipment

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] The method provided by the present invention mainly includes: for the PRB allocated by the base station to the UE, the base station allocates a DRS pattern corresponding to each channel of downlink data for the UE, and assigns the DRS pattern information allocated to the UE and the DRS RE information allocated to transmit the DRS Send to the UE; the base station sends DRS to the UE according to the DRS pattern information allocated to the UE, and does not send downlink data on the DRS RE allocated for transmitting DRS; where the DRS pattern is the position of the DRS on the time-frequency resource information, or a combination of location information and spreading code information, and the DRS patterns corresponding to each channel of downli...

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Abstract

The invention provides a method for sending and receiving a DRS (Dedicated Reference Signal), a base station and user equipment (UE). Aiming at a physical resource block distributed by the base station to the UE, the base station distributes DRS patterns which correspond to downlink data of various links to the UE so that information of the DRS patterns distributed to the UE and DRS-RE information distributed for transmitting the DRS can be sent to the UE; according to the information of the DRS patterns distributed to the UE, the base station sends the DRS to the UE, but does not send downlink data on the DRS-RE which is distributed for transmitting the DRS, wherein the DRS patterns are position information of the DRS on a time-frequency resource, or the combination of position information and extended code information; and the DRS patterns which correspond to the downlink data of various links of various UE are all different. By adopting the invention, the DRS for various UE can be transmitted in the multi-user multi-input multi-output technology so that various UE can accurately demodulate the downlink data.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a method for sending and receiving a dedicated reference signal, a base station and a user terminal. Background technique [0002] In the Long Term Evolution-Enhanced (LTE-A) system, in order to support higher peak speeds, each cell can be configured with multiple transmit antennas, for example, 8 transmit antennas. At the same time, in order to reduce the overhead of pilot signals, the user terminal (UE ) using a dedicated reference signal (DRS) sent by the base station to demodulate the downlink data. When sending the DRS, the base station sends the DRS separately for each channel of data of the UE, that is, each data stream, and the UE performs demodulation processing of the corresponding channel of data after receiving each DRS. [0003] Such as figure 1 As shown, in a physical resource block (PRB), the resource elements (REs) used for DRS are divided into two ...

Claims

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Application Information

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IPC IPC(8): H04W48/08H04W48/16H04B7/04
Inventor 李迎阳李小强
Owner BEIJING SAMSUNG TELECOM R&D CENT