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Electronic device, communication method, and storage medium

A technology for electronic equipment and user equipment, which is applied in wireless communication, electrical components, radio transmission systems, etc., and can solve the problem of not using the multi-layer structure characteristics of the IAB system.

Inactive Publication Date: 2020-08-11
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the coordinated resource scheduling based on adjacent cells needs to transmit additional signaling between adjacent base stations, which brings additional overhead, and does not take advantage of the multi-layer structure characteristics of the IAB system

Method used

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  • Electronic device, communication method, and storage medium
  • Electronic device, communication method, and storage medium
  • Electronic device, communication method, and storage medium

Examples

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no. 1 example

[0074] A first embodiment will be described below with reference to the drawings.

[0075] According to the first embodiment of the present disclosure, signal interference from adjacent small cells within the same layer is avoided by switching the access link used by the interfered UE to another layer of the IAB system. In the following, the Figure 4 The single-hop two-layer IAB system shown in is used as the described scenario, in which UE2 is interfered by the same-frequency signal from child node 2. However, it should be noted that the scenarios targeted by this embodiment are not limited to this. For example, the IAB system may not be limited to two layers, but may have more than two layers, and the nodes that generate co-channel interference may not be limited to being under the same master node. child nodes.

[0076] Figure 5 is a simplified flowchart showing the inter-layer handover process according to the first embodiment of the present disclosure.

[0077] Firs...

no. 2 example

[0175] The second embodiment of the present disclosure provides downlink MIMO transmission based on interlayer connection.

[0176] As described in the previous chapters, such as Figure 4 IAB nodes such as sub-node 1 and sub-node 2 shown in , can also work in amplify-and-forward (AF) mode in addition to decoding and forwarding (DF) mode.

[0177] In DF mode, since the IAB node needs to decode and re-encode the transmitted data passing through it, in terms of transmitted data, the two layers before and after the IAB node are isolated from each other.

[0178] In AF mode, the IAB node amplifies and forwards all received signals, including useful signals, noise, and interference. It can be simply considered that the IAB node is an "amplifier" between two layers. / UE is transparent.

[0179] In view of the characteristics of the AF mode of the IAB node, the IAB node will amplify and accumulate the noise and interference in the previous layer to the next layer, so the availabili...

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Abstract

The invention relates to an electronic device, a communication method and a storage medium in a wireless communication system. The invention provides the electronic device on a user equipment side. There is an access link between the user equipment and a first node in an integrated access and backhaul (IAB) system, an electronic device having a backhaul link between a first node and a second node,wherein the second node is a parent node of the first node in the network topology of the IAB system, the electronic device including processing circuitry configured to: measure signal interference from a third node, report an interference measurement result to the first node, and under the condition that the second node determines to switch the access link used by the user equipment at least partially based on the interference measurement result exceeding a predetermined threshold, establish a direct access link between the user equipment and the second node, and disconnect the access link between the user equipment and the first node.

Description

technical field [0001] The present disclosure relates to an electronic device, a communication method, and a storage medium, and more particularly, to a multi-user MIMO-enhanced electronic device, a communication method, and a storage medium suitable for an Integrated Access and Backhaul (IAB) system. Background technique [0002] As a next-generation wireless communication standard, 5G NR (New Radio) uses higher frequency bands, such as millimeter wave frequency bands, and applies large-scale antennas and multi-beam systems to provide higher system rates and spectral efficiency. Massive MIMO (Massive MIMO) technology further expands the use of the space domain, and beamforming (Beamforming) technology is used to form narrower directional beams to combat the larger path loss in high-frequency channels. It has become the key technology of 5G communication. [0003] IAB is an important form of 5G NR network deployment, especially in scenarios where users are densely distribut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/00H04W36/08H04W36/30H04W76/10H04W76/30H04B7/0452
CPCH04W36/08H04W76/10H04W76/30H04B7/0452H04W36/008355H04W36/302H04W84/047H04W36/0058H04W36/20H04W24/10H04B7/0695H04W88/085H04W76/22H04W72/23H04B7/15557H04W36/0083H04W36/30
Inventor 刘文东王昭诚曹建飞
Owner SONY CORP
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