Pilot frequency mapping method, pilot signal transmission method and device thereof, base station and terminal

A mapping method and pilot signal technology, which is applied in the field of base stations and terminals, can solve problems such as the inability to realize the pilot mapping method

Active Publication Date: 2017-10-24
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the existing LTE system, in subframes containing CSI-RS, each PRB in the entire system bandwidth usually uses the sa

Method used

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  • Pilot frequency mapping method, pilot signal transmission method and device thereof, base station and terminal
  • Pilot frequency mapping method, pilot signal transmission method and device thereof, base station and terminal
  • Pilot frequency mapping method, pilot signal transmission method and device thereof, base station and terminal

Examples

Experimental program
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Effect test

example 1

[0099] In this example, each PRB uses the same K groups of N-port pilots, that is, the K groups of N-port pilot patterns are fixed in the entire system bandwidth, and in each PRB of the PRB group They are all mapped with the same K groups of N-port pilot patterns. In each PRB, the antenna port group and the N-port pilot pattern are mapped in a one-to-one manner.

[0100] At this time, in each PRB of a PRB group, the RE positions to which the pilots of all antenna ports are mapped are determined by the RE positions to which the same K groups of N-port pilot patterns are mapped; specifically, each antenna The port group is mapped to an RE position mapped to a different N-port pilot pattern, and each antenna port in the antenna port group is multiplexed in all RE positions mapped to the N-port pilot pattern.

[0101] In order to support the power consistency between antenna ports, this example can determine the antenna port group to which each antenna port belongs according to t...

example 2

[0111] In this example, different K groups of N-port pilot patterns are mapped to different PRBs of the PRB group. In each PRB, the antenna port group and the N-port pilot pattern are mapped in a one-to-one manner. In different PRBs of a PRB group, the RE positions to which the pilots of all antenna ports are mapped are determined by the RE positions to which different K groups of N-port pilot patterns are mapped; specifically, each antenna port group is mapped to For the RE positions mapped by a different N-port pilot pattern, each antenna port in the antenna port group is multiplexed in all the RE positions mapped by the N-port pilot pattern.

[0112] In order to support the power consistency between antenna ports, this example can determine the antenna port group to which each antenna port belongs according to the antenna port number;

[0113] Then, configure the first PRB aggregated pilot pattern group in the PRB group, the pilot pattern group includes K groups of N-port ...

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PUM

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Abstract

The invention provides a pilot frequency mapping method, a pilot signal transmission method and a device thereof, a base station and a terminal. In each PRB of a PRB group, a pilot frequency of each antenna port is mapped to a resource unit RE position in the PRB according to an antenna port number and a number of the PRB in the PRB group or in an entire system bandwidth so that support is provided for implementation of power borrowing. Emission power at a base station terminal is fully used so as to expand a cover area of a pilot signal and improve channel estimation quality of a receiving end.

Description

technical field [0001] The present invention relates to the technical field of wireless communication and channel quality measurement, in particular to a pilot mapping method of an antenna port, a pilot signal transmission method and device, a base station and a terminal. Background technique [0002] The Long Term Evolution system (LTE, Long Term Evolution) of 3GPP Rel-10 introduces Channel State Information Reference Symbol (CSI-RS) as a measurement pilot, and the measurement pilot can be configured as a 2-port, 4-port or 8-port pilot frequency pattern. There are 20 sets of 2-port pilot patterns, 10 sets of 4-port pilot patterns, and 5 sets of 8-port pilot patterns in one Physical Resource Block (PRB, Physical Resource Block). [0003] Figure 1A to Figure 1C Shown are the CSI-RS pilot patterns supported in the existing LTE system, where, Figure 1A to Figure 1C 2-port, 4-port, and 8-port pilot patterns, respectively. exist Figure 1A In , two adjacent resource elements...

Claims

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Application Information

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IPC IPC(8): H04L5/00
CPCH04L5/0023H04L5/0048H04J13/10H04L5/0026H04L5/005H04L5/0016H04J13/004H04W72/044H04W16/02H04W72/23H04W72/53H04J13/0003
Inventor 李辉高秋彬陈润华陈文洪塔玛拉卡·拉盖施
Owner DATANG MOBILE COMM EQUIP CO LTD
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