Network node and method of scheduling transmissions between network node and wireless device

A wireless device and network node technology, applied in radio transmission systems, transmission systems, wireless communications, etc., can solve the problems of wasting available resources, etc., and achieve the effects of low round-trip delay, flexible use, and efficient use

Active Publication Date: 2022-02-18
TELEFON AB LM ERICSSON (PUBL)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, most of the available resources are wasted when applying analog beamforming, see Figure 2b

Method used

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  • Network node and method of scheduling transmissions between network node and wireless device
  • Network node and method of scheduling transmissions between network node and wireless device
  • Network node and method of scheduling transmissions between network node and wireless device

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Embodiment Construction

[0023] In the case of analog beamforming, an analog transmission signal may be sent to the set of antenna elements. The phase shift of each antenna in the ensemble is then controlled in a manner that creates radio beams, see Figure 2c . An advantage of this solution is eg that the digital-to-analog conversion does not require the same number of AD / DA converters as the spatial multiplexing layer. Furthermore, the number of internal digital data flows from the precoding entity to the extension point near the antenna unit is reduced, resulting in reduced complexity and cost. The number of transformers / digital data streams may be much lower than the number of antenna elements, since most degrees of freedom are used for beamforming anyway. The disadvantage is the lack of flexibility since all resource blocks of a symbol undergo the same beamforming. This is only consistent with the scheduling of users (wireless devices) in a single direction per beam at each instant and for all...

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Abstract

A network node and a method for scheduling transmissions between the network node and a wireless device within the same physical layer resource. The method includes selecting a beam for transmission between a network node and a first wireless device; and determining whether a portion of the physical layer resource remains after allocating a portion of the physical layer resources to a first set of wireless devices within a transmission range of the selected beam. Layer resources are available. If so, the selected beam is adjusted such that a second set of wireless devices that are not within the transmission range of the selected beam are within the transmission range of the adjusted beam. If not (after allocating part of the physical layer resources to the first and second sets of wireless devices), and if there are sufficient physical layer resources for communication between the network node and the first and second sets of wireless devices Transmission using the adjusted beam, the adjusted beam is used to schedule transmissions between the network node and the first and second sets of wireless devices.

Description

technical field [0001] The present disclosure relates to wireless communications, and in particular to scheduling transmissions between a network node and one or more wireless devices. Background technique [0002] In fifth-generation (5G) wireless systems, beamforming and multiple-input multiple-output (MIMO) transmission will be core technologies in terms of standardization. This development is being driven by increasing capacity requirements, with more and more MIMO transmissions being introduced in existing frequency bands. However, this will quickly become insufficient, necessitating a migration to higher carrier frequency spectrum, starting at 3.5-5GHz, continuing to the soon-to-be-available 28GHz band, and beyond that to 60GHz. For these higher frequency bands, beamforming with massive antenna arrays (eventually hundreds of elements) will be required to compensate for degraded radio propagation. At these higher frequencies, cost, size, and power constraints will als...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0452
CPCH04B7/0452H04B7/0632H04B7/0639H04B7/0695H04W52/241
Inventor 卡萝拉·法罗纽斯布·约兰松弗雷德里克·哈斯玛格纳斯·伦德瓦尔托尔比约恩·维格伦
Owner TELEFON AB LM ERICSSON (PUBL)
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