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Beam selection based on UE position measurements

A beam and target beam technology, applied in the field of beam switching between access nodes, can solve the problems of increased switching failures, non-optimal beam selection, non-optimal and other issues

Active Publication Date: 2021-06-22
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Activating too many beams in the target may have some disadvantages: In addition to wasting energy, the resources of the target AN may be used inefficiently, e.g. a target AN with limited beamforming capability may exploit an undesired amount of its beamforming capacity Mostly to provide measurement opportunities (instead of using this resource for data transmission to other UEs)
The risk of handover failure and / or other potential interference in the UE's communication may increase due to long measurement gaps, as the measurement procedure may take longer
On the other hand, activating too few beams may lead to non-optimal beam selection (and thus non-optimal performance), and even handover failures

Method used

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  • Beam selection based on UE position measurements
  • Beam selection based on UE position measurements
  • Beam selection based on UE position measurements

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Embodiment Construction

[0044] Such as figure 1 As shown, the example radio network 10 may include one or more instances of wireless communication devices (e.g., conventional user equipment (UE), or machine type communication (MTC) or machine-to-machine (M2M) devices) and capable of communicating with wireless communication devices Multiple radio access nodes (e.g., eNodeBs or other base stations) for communication, along with any communication device adapted to support communication between wireless communication devices or between a wireless communication device and another communication device (e.g., a landline phone or a server on the Internet) Add-ons. exist figure 1In the example shown, one of the wireless communication apparatuses, which will be referred to as user equipment UE 12, is shown. Furthermore, a first access node AN 14 and a second AN 16 are shown by way of example, said first AN 14 being also called source AN 14 in the following (to which the UE 12 was connected prior to the hand...

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Abstract

The invention relates to a method for performing handover of a user equipment UE (12) from one or more of the source beams of a source access node AN (14) to one or more of the target beams of a target access node AN (16). A method in which the target AN performs the steps of: receiving from the source AN (14) positioning information indicative of a first position estimate of the UE's (12) actual position; position estimate derivation; and activating one or more of the target beams dependent on the resulting position estimate.

Description

technical field [0001] The present disclosure relates generally to beamforming in wireless access networks, and further to inter-access node beam switching. Background technique [0002] In a typical cellular system (also known as a wireless communication network), wireless terminals (also known as mobile stations or user equipment) communicate via a radio access network RAN ​​to one or more core networks. The radio access network may comprise a plurality of access points AP or base stations BS communicating with user equipment UE by means of radio signals and providing access to the core network. [0003] The 3rd Generation Partnership Project 3GPP has established mobile communication standards for multiple generations. Universal Mobile Telecommunications System UMTS is a third generation mobile communication system, which evolved from Global System for Mobile Communications GSM to provide mobile communication services based on Wideband Code Division Multiple Access WCDMA ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0408H04B7/06H04W36/32
CPCH04B7/0408H04B7/0617H04W36/06H04W36/0055H04W36/322H04W36/085H04W64/00
Inventor J.鲁内
Owner TELEFON AB LM ERICSSON (PUBL)