Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Base station antenna selection and multi-antenna channel adaptive method, device and base station

A multi-antenna, self-adaptive technology, applied in diversity/multi-antenna systems, space transmit diversity, etc., can solve the problems of high antenna cost, low ratio, unfavorable multi-stream data transmission, etc., and achieve the effect of improving performance and reducing correlation

Active Publication Date: 2018-12-28
CHINA MOBILE COMM GRP CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the 8-channel antenna application scenario, multi-stream (3-stream / 4-stream) beamforming has strict requirements on the channel environment, and the ratio is low, so it is difficult to apply
The main reason is that the antenna element spacing of the 8-channel antenna is small, resulting in high antenna correlation, which is not conducive to multi-stream data transmission
Replacing antennas with large spacing can improve multi-stream data transmission performance, but on the one hand, the cost of replacing antennas is too high; on the other hand, antennas must have good coverage capabilities, and antennas with large spacing cannot meet network coverage requirements

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Base station antenna selection and multi-antenna channel adaptive method, device and base station
  • Base station antenna selection and multi-antenna channel adaptive method, device and base station
  • Base station antenna selection and multi-antenna channel adaptive method, device and base station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0052] Embodiment 1: The base station configures the terminal to perform measurement according to the 4-port CSI-RS.

[0053] Such as Figure 5 As shown, it is a schematic diagram of the implementation flow of the corresponding multi-antenna channel adaptation method, which may include the following steps:

[0054] S51. The base station configures cell-level 4-port CSI-RS measurement.

[0055] Specifically, the base station configures the cell-level 4-port CSI-RS measurement, and instructs the terminals within the coverage to perform the 4-port CSI-RS measurement. At the same time, the base station uses the SRS to perform single- and dual-stream beamforming.

[0056] S52. The terminal performs 4-port CSI-RS measurement according to the configuration of the base station.

[0057] During specific implementation, the terminal measures according to the 4-port CSI-RS according to the protocol.

[0058] S53. The terminal feeds back channel information to the base station.

[00...

Embodiment approach 2

[0067] Embodiment 2: The base station configures the terminal to perform measurement according to the 8-port CSI-RS

[0068] Such as Figure 6 As shown, it is a schematic diagram of the implementation flow of the corresponding multi-antenna channel adaptation method, which may include the following steps:

[0069] S61. The base station configures cell-level 8-port CSI-RS measurement.

[0070] During specific implementation, the base station configures a cell-level 8-port CSI-RS, and instructs the terminal to measure the CSI-RS. At the same time, the base station can use the SRS to perform single-dual stream beamforming, and can also perform beamforming based on CSI-RS and codebook feedback.

[0071] S62. The terminal performs 8-port CSI-RS measurement according to the configuration of the base station.

[0072] Specifically, the terminal measures according to the 8-port CSI-RS according to the protocol.

[0073] S63. The terminal feeds back the first channel information to...

Embodiment approach 3

[0087] Embodiment 3: The base station configures the terminal to perform measurement according to alternate 8-port CSI-RS and 4-port CSI-RS.

[0088] Such as Figure 8 As shown, it is a schematic diagram of the implementation flow of the corresponding multi-antenna channel adaptation method, which may include the following steps:

[0089] S81. The base station configures cell-level 8-port CSI-RS and 4-port CSI-RS measurements with alternating cycles.

[0090] During specific implementation, the base station configures cell-level 8-port and 4-port CSI-RSs with alternating cycles. For example, the cycles of the two CSI-RSs are each 20 ms, and they appear alternately every 10 ms, such as Figure 4 As shown; Instruct the terminal to measure 8-port CSI-RS; Sounding signal (SRS) can be used for single- and dual-stream beamforming, or a method based on CSI-RS and codebook feedback can be used for beamforming.

[0091] S82. The terminal performs CSI-RS measurement according to the c...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention discloses a base station antenna selection method, a base station antenna selection apparatus, a multi-antenna channel self-adaptation method, a multi-antenna channel self-adaptation apparatus, and a base station. According to the invention, the antenna covering capability is ensured and the multi-stream data transmission performance is improved at the same time. The base station antenna selection method includes: N antenna channels satisfying a preset interval condition are selected from base station antennas for performing multi-stream beam forming for a terminal when the multi-stream data transmission is required by the terminal. The multi-antenna channel self-adaptation method includes the steps as follows: transmitting CSI-RS measurement instruction information to the terminal; confirming that the terminal supports the multi-stream data transmission, and selecting N antennal channels satisfying the preset interval condition for performing multi-stream beam forming for the terminal when the terminal performs measurement according to a CSI-RS with four ports; reconfiguring the terminal for performing measurement according to the CSI-RS with four ports if the terminal performs measurement according to a CSI-RS with eight ports, and selecting N antenna channels satisfying the preset interval condition for performing multi-stream beam forming for the terminal according to second channel information fed back by the terminal.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a base station antenna selection and multi-antenna channel adaptive method, device and base station. Background technique [0002] In the existing TD-LTE (Time Division Long Term Evolution, Time Division Long Term Evolution) network, 8-channel antennas are used to receive and transmit data on the network side. The 8-channel antenna design features cross-polarization, such as figure 1 As shown, the distance between polarized antenna pairs is small (0.5 times the wavelength in the F frequency band, and 0.7 times the wavelength in the D frequency band), which is suitable for beamforming and can effectively improve the cell coverage and cell throughput. Theoretical analysis and live network application show that the 8-channel antenna can obtain better single-stream and dual-stream forming performance. [0003] On the basis of LTE Release9 dual-stream beamform...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/06
Inventor 许宁张龙
Owner CHINA MOBILE COMM GRP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com