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Transmission method of uplink reference signals and user equipment and base station

A technology of user equipment and transmission method, which is applied in the field of communication, can solve the problems of reducing the gain of CoMP technology, and achieve the effect of ensuring the gain

Inactive Publication Date: 2013-05-08
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using CoMP technology, both UE1 and UE2 send uplink signals to two cells, however, cell 2 will be interfered by the signal sent by UE2 when receiving the signal sent by UE1, and cell 1 will receive the signal sent by UE2 Sometimes it will be interfered by the signal sent by UE1, which will reduce the gain brought by CoMP technology

Method used

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  • Transmission method of uplink reference signals and user equipment and base station
  • Transmission method of uplink reference signals and user equipment and base station
  • Transmission method of uplink reference signals and user equipment and base station

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Embodiment Construction

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0029] figure 1 It is a flow chart of an embodiment of the method for sending an uplink reference signal in the present invention, such as figure 1 As shown, the method for the uplink reference signal may include:

[0030] Step 101, the UE receives first information sent by the base station, where the first information is used to instruct the UE...

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Abstract

The invention provides a transmission method of uplink reference signals, user equipment and a base station. The transmission method of the uplink reference signals comprises the following steps: the user equipment receives first information transmitted by the base station, wherein the first information is used for indicating the user equipment to transmit demodulation reference signals on a part of subcarriers distributed by the user equipment on the base station; the user equipment receives second information transmitted by the base station, wherein the second information is used for indicating information used for transmitting information pf the subcarriers of demodulation reference signals; and the user equipment generates the demodulation reference signals according to the first information and the second information, maps the demodulation reference signals to the subcarriers indicated by the second information, and transmits the demodulation reference signals to the base station. According to the transmission method, orthogonality of the demodulation reference signals transmitted by the user equipment of different communities can be guaranteed, and gain brought by comp technology can be guaranteed.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method for sending an uplink reference signal, user equipment and a base station. Background technique [0002] In the uplink transmission of the Long Term Evolution (hereinafter referred to as: LTE) system and the further evolution of the Long Term Evolution (LTE-Advanced) system, the base station allocates a predetermined number of physical resources for the user equipment (User Equipment; hereinafter referred to as: UE) (Physical Resource Block; hereinafter referred to as: PRB), and the UE sends a demodulation reference signal (Demodulation Reference Signal; hereinafter referred to as: DM RS) and data on these PRBs. The DM RS is used for channel estimation, which is convenient for the base station to demodulate the data, and the DM RS is transmitted on a symbol in the middle of each time slot; for example, a transmission time interval (Transmission Time Interv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/16H04W72/04
CPCH04L5/0035H04L5/0073H04L5/0051H04W28/16H04B7/024
Inventor 周明宇
Owner HUAWEI TECH CO LTD
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