Network node and method therein for determining a beam to be transmitted for at least a first user equipment

A technology for network nodes and user equipment, applied in space transmit diversity, power management, transmission systems, etc., to solve problems such as problems, violation of health interference restrictions, etc.

Active Publication Date: 2019-05-21
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0037] However, problems can arise when the allowed tolerance around the declared EIRP is exceeded
If the power should fall below the lower limit of the tolerance range or above the upper limit of the tolerance range, the base station will no longer comply with the specified requirements and health and / or interference limits may also be violated

Method used

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  • Network node and method therein for determining a beam to be transmitted for at least a first user equipment
  • Network node and method therein for determining a beam to be transmitted for at least a first user equipment
  • Network node and method therein for determining a beam to be transmitted for at least a first user equipment

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Embodiment Construction

[0065] As part of developing the examples herein, the inventors recognized some issues that will be discussed first.

[0066] As mentioned above, the regulator may limit the peak radiated power from the base station, eg EIRP, for eg health concerns, which will be used as a specific example of radiated power in many of the described embodiments below. Usually, this limit is a limit on the radiated power in a specific direction, which is usually calculated as the average value of the radiated power in a specific direction over a frequency interval or a time interval. However, when using beams, this limitation of the average radiated power in a certain direction may reduce the gain of beamforming. Therefore, it is desirable to be able to transmit a beam in a particular direction without exceeding the limit of the average radiated power in that direction.

[0067] A solution to the above problem can be achieved by calculating the average radiated power in a certain direction at a...

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Abstract

A method performed by a network node for determining a beam to be transmitted to at least a first User Equipment, UE is provided. The network node determines (903) a beam to be transmitted to at leasta first UE based on an obtained average spatial profile of radiated power in each direction. The average spatial profile of radiated power is based on a spatial profile of radiated power averaged over any one or more out of a frequency interval and a time interval.

Description

technical field [0001] Embodiments herein relate to a network node and methods therein. In particular, it involves determining a beam to be transmitted for at least a first user equipment (UE). Background technique [0002] In a typical wireless communication network, a UE (also referred to as a wireless communication device, mobile station and / or station (STA)) communicates with one or more core networks (CN) via a radio access network (RAN). The RAN covers a geographical area, which is divided into service areas or cell areas, which may also be referred to as beams or beam groups. Each service area or cell area is served by a base station, which may also be called a radio network node, radio access node, Wi-Fi access point, radio base station (RBS), NodeB (NB) or eNodeB (eNB). A service area or cell area is a geographical area where radio coverage is provided by a radio network node. The base station communicates with wireless devices within range of the wireless networ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/0426H04B7/06H04W52/36H04B1/3827H01Q1/24
CPCH01Q1/245H04B1/3838H04B7/043H04B7/0617H04B7/0695H04W52/367H04B17/102H01Q3/22H01Q3/26
Inventor T·查普曼E·西恩凯维奇F·加斯马扎德T·埃尔斯特罗姆
Owner TELEFON AB LM ERICSSON (PUBL)
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