A method and device for configuring a downlink reference signal in a 5G system

A reference signal and 5G technology, applied in the field of communication, can solve the problems of increased computing workload, inconvenient actual operation, and difficulty in ensuring that resource locations do not conflict, and achieve the effects of reducing computing overhead, improving work efficiency, and avoiding interference

Active Publication Date: 2021-10-29
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

[0012] In the existing 5G system, there are no constraints on the configuration of CSI-RS resource locations, and a large number of parameters need to be set for each type of CSI-RS in a cell. Therefore, in the case of a large number of cells, if all To configure the resource positions occupied by CSI-RS in a cell requires a large number of resource configuration parameters, which is not convenient for actual operation, increases the workload of calculation, reduces the accuracy of configuration parameters, and it is difficult to ensure the CSI-RS configured by adjacent cells. The resource positions occupied by RS do not conflict

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  • A method and device for configuring a downlink reference signal in a 5G system
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  • A method and device for configuring a downlink reference signal in a 5G system

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[0064] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0065] The downlink reference signal in 5G is configured at the user level. The allocation of CSI-RS resource positions in the implementation of the present invention is not limited to whether it is used for periodic CSI-RS or aperiodic CSI-RS, nor is it limited to all user terminals configured with the same CSI-RS. The RS resources are still configured with different CSI-RS resources. Only the CSI-RS resources of all user terminals in the cell...

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Abstract

The present invention relates to the communication field, in particular to a method and device for configuring a downlink reference signal in a 5G system. It is used to automatically allocate the resource position of CSI-RS according to the resource configuration rules to ensure that the resource positions occupied by CSI-RS do not conflict. The method is: the base station determines the target time slot set for sending the resource position of CSI-RS, and then, based on The cell ID divides each cell into several groups, and then, for different groups, the base station selects unallocated time slots from the target time slot set, and allocates CSI-RS to each group by combining time division and frequency division. In this way, the calculation overhead of resource configuration can be reduced, the efficiency of actual operation can be improved, the interference problem between adjacent cells can be effectively avoided, and the impact of each cell in each group on the service data transmission of other adjacent cells can be reduced .

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for configuring a downlink reference signal in a 5G system. Background technique [0002] Currently, in the fourth generation mobile communication (Fourth Generation, 4G) system, a fixed transmission resource configuration scheme is designed for the cell downlink reference signal. First, the system determines a cell identification code (Identity, ID) of each cell, and then calculates a resource position occupied by a cell reference signal (Cell Reference Signal, CRS) according to the cell ID of each cell. [0003] Under the existing technology, the system will send CRS to terminals in each cell in all downlink subframes. When the cell IDs of two adjacent cells are equal to the residual values ​​after modulo setting parameters (eg, 3), based on the cell ID The resource positions occupied by the calculated CRS are also the same. In this case, when the system s...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04L5/00
CPCH04L5/0048H04L5/0053H04W72/0446
Inventor 刘杨
Owner DATANG MOBILE COMM EQUIP CO LTD
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