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Method and apparatus for obtaining accurate measurements of a communication device

A communication device and technology of measurement results, applied in the directions of wireless communication, location diversity, diversity/multi-antenna system, etc., can solve the problems of not completely comparable, and the handover determination is not very useful.

Inactive Publication Date: 2020-09-25
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A difficulty that may arise when network nodes use different types of antenna arrangements and with different degrees of advanced signal processing is that measurements performed by different network nodes may not be completely comparable for different reasons
[0004] The introduction of advanced adaptive antennas can for example make measurements in the downlink (i.e. from the network node to the communication device) less useful for example for making handover decisions

Method used

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  • Method and apparatus for obtaining accurate measurements of a communication device
  • Method and apparatus for obtaining accurate measurements of a communication device
  • Method and apparatus for obtaining accurate measurements of a communication device

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Embodiment Construction

[0032]In the following description, for purposes of explanation and not limitation, specific details are set forth, such as specific architectures, interfaces, techniques, etc., in order to provide a thorough understanding. In other instances, detailed descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the description with unnecessary detail. The same reference numbers refer to the same or similar elements throughout the description.

[0033] Briefly stated, the present disclosure enables downlink measurements to be used for mobility decisions, eg, in wireless networks where different nodes have different beamforming and antenna capabilities.

[0034] image 3 An environment in which embodiments of the disclosure may be implemented is schematically shown. A wireless network 10, such as an LTE network, comprises a plurality of network nodes 12, 13, 14 enabling communication devices 16 to communicate over wireless links. Such network no...

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Abstract

The present disclosure relates to a method (13) for enabling accurate measurements for a communication device (16). The method comprises: sending (102) by a serving node (12) serving the communication device and to a neighboring network node (13) a request for measurement of an uplink reference signal from the communication device; serving and neighboring nodes from The communication device receives (103) an uplink reference signal; the serving and neighbor nodes obtain (104) downlink beamforming weights based on the received uplink reference signal; the serving and neighbor nodes transmit (105) to the communication device by Adapted communication device specific downlink reference signal for the communication device using downlink beamforming weights; UE transmits (107) downlink measurement report to serving node; serving node makes mobility decision based on UE report ( 108). The present disclosure also relates to corresponding network nodes, computer programs and computer program products.

Description

technical field [0001] The techniques disclosed herein relate generally to the field of wireless communications, and in particular to methods and network nodes for enabling accurate measurements for communications devices. Background technique [0002] Recent advances in antenna technology are expected to enable the deployment of increasingly advanced antennas in cellular radio networks. Antennas that are reconfigurable in terms of beam shape, so-called reconfigurable antenna systems (RAS), are already in use. Beamforming and beam tracking for communicators are also gaining momentum. Furthermore, it is expected that very large antennas comprising several hundred individually steerable antenna elements will become available in the near future. [0003] Advanced antenna solutions are very promising, but they also introduce a new set of challenges that will need to be addressed. A difficulty that may arise when network nodes use different types of antenna arrangements and wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/00
CPCH04W36/0094H04B7/022H04B7/0619H04B7/0617H04W36/0058H04W36/00837H04W24/10H04W16/28H04B7/0632
Inventor P.弗伦格M.赫斯勒E.埃里克斯森
Owner TELEFON AB LM ERICSSON (PUBL)