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Large-scale MIMO transmission method and device

A multi-antenna transmission, wireless signal technology, applied in the field of wireless communication, can solve the problem of low transmission power of a single antenna, and achieve the effect of improving the receiving performance

Active Publication Date: 2020-06-26
SHANGHAI LANGBO COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In large-scale MIMO, the transmission power of a single antenna is generally low, so the coverage of broadcast signals is a problem that needs to be solved

Method used

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  • Large-scale MIMO transmission method and device
  • Large-scale MIMO transmission method and device
  • Large-scale MIMO transmission method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0152] Embodiment 1 illustrates the flow chart of wireless transmission, as attached figure 1 shown. attached figure 1In , the base station N1 is the serving cell maintenance base station of the UE U2. attached figure 1 , the steps in box F1, box F2 and box F3 are optional.

[0153] For N1, send K1 first-type wireless signals in step S101; send K2 second-type wireless signals in step S102; receive the third wireless signal in step S103; determine the target signal according to T2 in step S11 The T1 first vectors, the T2 target signals are respectively sent by T2 terminals, the UE U2 is one of the T2 terminals, and the third wireless signal is one of the T2 target signals . The T2 is a positive integer, and one target signal is used to determine T second-type RS resources in one second-type radio signal; in step S12, a fourth radio signal is sent.

[0154] For U2, receive K1 first-type wireless signals in step S201; determine a fourth vector according to the target first-...

Embodiment 2

[0163] Embodiment 2 illustrates the schematic diagram of the antenna structure, as attached figure 2 shown. attached figure 2 In this example, the communication node is equipped with G antenna groups, and the G antenna groups correspond to G RF (Radio Frequency, radio frequency) Chains (chains) respectively. One antenna group includes V antennas, G is a positive integer, and V is a positive integer. For 1≤g≤G, the antennas in antenna group #g include the attached figure 2 In {Ant g_1,Ant g_2,...,Ant g_V}, the antenna {Ant g_1,Ant g_2,...,Ant g_V} passes the beamforming vector [a g,1 a g,2 …a g,V ] for analog beamforming.

[0164] As a sub-embodiment 1 of Embodiment 2, the communication node is a base station, and figure 2 x in 1 ,...x Q is the useful signal to be sent, and the useful signal is sent after undergoing digital beamforming and analog beamforming. The baseband processor is used for the x 1 ,...x Q perform digital beamforming, the [a g,1 a g,2 …...

Embodiment 3

[0179] Embodiment 3 illustrates a schematic diagram of resource mapping of RS ports in the first type of wireless signal and the second type of wireless signal, as shown in the attached image 3 shown. attached image 3 In , the slash marks the time-frequency resource occupied by the first type of wireless signal in one OFDM symbol, and the cross line marks the time-frequency resource occupied by one RS port of the second type of wireless signal in one OFDM symbol resources, the i is a positive integer.

[0180] As a sub-embodiment 1 of Embodiment 3, any RU (Resource Unit, resource unit) in the one OFDM symbol is used by one of {the first type of wireless signal, the second type of wireless signal} occupy. The RU occupies the bandwidth of one subcarrier in the frequency domain, and occupies the duration of one OFDM symbol in the time domain.

[0181] As a sub-embodiment 2 of Embodiment 3, the one OFDM symbol can only be occupied by one wireless signal of the first type, an...

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Abstract

The invention provides a large-scale MIMO (Multiple Input Multiple Output) transmission method and a large-scale MIMO transmission device. The method comprises the following steps: firstly, the UE receives K1 first-class wireless signals; then, K2 second-class wireless signals are received; finally, a third wireless signal is transmitted. Wherein the first type of wireless signals comprise at least one of {synchronous signals, broadcast signals and a first type of RS resources}, and the second type of wireless signals comprise L second type of RS resources. Wherein the third wireless signal isused for determining T second type RS resources in a target second type wireless signal. Wherein the K2 second-class wireless signals are in one-to-one correspondence with the K2 first-class wirelesssignals respectively. Wherein the K2 first type wireless signals are in the K1 first type wireless signals. According to the invention, the gain of beam forming is improved, the signaling redundancyis reduced, and the transmission efficiency is improved.

Description

[0001] This application is a divisional application of the following original application: [0002] --The filing date of the original application: June 22, 2016 [0003] --Application number of the original application: 201610458339.5 [0004] --The name of the invention of the original application: a large-scale MIMO transmission method and device technical field [0005] The present invention relates to a method and device for multi-antenna transmission in the technical field of mobile communication, and in particular to a wireless communication solution in a scenario where a network side device deploys a large number of antennas. Background technique [0006] Massive MIMO has become a research hotspot in the next generation of mobile communications. In large-scale MIMO, the transmission power of a single antenna is generally low, so the coverage of broadcast signals is a problem that needs to be solved. [0007] 3GPP (3rd Generation Partner Project, third generation pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/0413H04B7/06H04L1/00H04L5/00
CPCH04B7/0413H04B7/0617H04B7/0632H04L1/0026H04L5/0048H04L5/0094
Inventor 张晓博
Owner SHANGHAI LANGBO COMM TECH CO LTD
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