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Channel state indication reference signal allocation method, base station and storage medium

A technology of channel state indication and allocation method, which is applied in the field of communication, can solve the problem of non-conflict allocation resources, etc., achieve the effect of less overhead, reduce the delay of handover, and improve the speed of handover

Pending Publication Date: 2020-01-07
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To solve the technical problem of allocating CSI-RS with non-conflicting resources for each accessed UE with poor channel quality

Method used

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  • Channel state indication reference signal allocation method, base station and storage medium
  • Channel state indication reference signal allocation method, base station and storage medium
  • Channel state indication reference signal allocation method, base station and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 As shown, the embodiment of the present invention proposes a CSI-RS allocation method, the method includes:

[0027] S101. Analyze the frame structure, determine the working mode of each time slot of NR, allocate CSI-RS transmission resources in time slots with downlink symbols, and allocate CSI-RS feedback resources in time slots with uplink symbols.

[0028] Specifically, according to the frame structure configuration of the cell, determine the working mode of each time slot of the NR system, which may be full downlink (all symbols are used for downlink), full uplink (all symbols are used for uplink), downlink self-contained (multiple symbols for downlink, few symbols for uplink), uplink self-contained (multiple symbols for uplink, few symbols for downlink). The base station analyzes the structure, and allocates CSI-RS transmission resources in time slots with downlink symbols, and allocates feedback resources in time slots with uplink symbols.

[0...

Embodiment 2

[0048] Such as Figure 5 As shown, a method for initializing a CSI-RS resource provided by an embodiment of the present invention includes:

[0049] S501. Analyze the frame structure, determine the working mode of each time slot of the new air interface NR, allocate CSI-RS transmission resources in the time slots with downlink symbols, and allocate CSI-RS feedback resources in the time slots with uplink symbols.

[0050] S502. Initialize CSI-RS resources according to preset parameters.

[0051] S503. After receiving the feedback result of the measurement event, acquire UEs with poor channel quality.

[0052] S504. According to the initialized CSI-RS resources, allocate resources to each UE with poor channel quality.

[0053] S505. After detecting that the UE is released, reclaim the feedback resource allocated to the UE.

[0054] In the embodiment of the present invention, on the basis of the first embodiment, when the UE is detected to be released, the feedback resource al...

Embodiment 3

[0056] The embodiment of the present invention is described by taking a typical scenario as an example: an office building scenario, supporting 400 UEs with poor channel quality. The configuration parameters are as follows: the frame structure is a period of 10ms, each frame uses 1 downlink symbol to measure the channel state, uses 5 uplink symbols to feed back information, the cell bandwidth is 272RB, and the frequency domain supports a total of 20 resources to feed back CSI information at the same time, each CSI information It occupies 2 RB, and the number of feedback resource sets is 1 (only channel quality is measured). Then the measurement cycle is configured as 10 ms, and the feedback cycle is configured as 40 ms. The allocation principle is to allocate time domain resources first and then frequency domain resources according to the feedback sequence of UE measurement events on poor channel quality.

[0057] Typical scene parameter configuration table

[0058] ...

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Abstract

The embodiment of the invention discloses a CSI-RS allocation method, a base station and a storage medium, and belongs to the field of communication. The method comprises the following steps: analyzing a frame structure, determining a working mode of each time slot of a new air interface NR, allocating CSI-RS transmission resources in a time slot with a downlink symbol, and allocating CSI-RS feedback resources in a time slot with an uplink symbol; initializing a CSI-RS resource according to a preset parameter; after a feedback result of the measurement event is received, obtaining UE with poorchannel quality; and allocating resources to each UE with poor channel quality according to the initialized CSI-RS resources. According to the embodiments of the present invention, CSI-RSs with non-conflict resources are allocated to each accessed UE with poor channel quality in an RRC reconfiguration process, thereby avoiding conflicts in resource feedback of a plurality of UEs at the same moment, satisfying the requirement of measuring the channel state of the UE in real time, and ensuring that the overhead of a base station side is as low as possible.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method for allocating CSI-RS (Channel State Information Reference Signal, Channel State Information Reference Signal) in NR (New Radio, new air interface) mobile communication, a base station and a storage medium thereof. Background technique [0002] Due to the promotion of multi-antenna technology, CSI-RS is introduced in 4G, and the reference signal is used together with the cell reference signal to measure channel state information of a UE (User Equipment, user equipment). With the evolution of the protocol, in NR, the CSI-RS completely replaces the cell reference signal as the only reference signal for channel measurement, and the reference signal can more accurately measure the channel quality of each UE. Due to the flexible configuration of the frame structure of NR, uplink and downlink resources can be combined in a variety of ways, so an accurate method ...

Claims

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Application Information

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IPC IPC(8): H04W28/02H04W28/04H04L5/00
CPCH04W28/0205H04W28/04H04L5/0053H04W28/02H04L5/00
Inventor 田继宇
Owner ZTE CORP
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