Wireless device performance in heterogeneous networks

摘要

The present invention relates to a method in a wireless device for improving wireless device performance, and to corresponding methods in a radio network node and to the corresponding nodes. The method comprises identifying (910) an occasion comprising a time period during which at least one time-frequency resource element, in a subframe that is transmitted between the wireless device and the radio network node, does not comprise information intended for the wireless device, or is not a time-frequency resource element in which the wireless device is expected to transmit. The method further comprises performing (920) an auxiliary action during the identified occasion to improve the wireless device performance.

主权项

1. A method in a wireless device for improving wireless device performance, the wireless device being served by a radio network node of a radio communication network using restricted measurement patterns and/or low-interference subframe patterns for inter-cell interference coordination, the method comprising:
performing first inter-frequency or inter-RAT measurements during configured measurement gaps and governed by one or more defined measurement performance requirements, where RAT denotes “Radio Access Technology” and where each configured measurement gap represents a defined time period during which the wireless device is not expected to transmit or receive with respect to the radio network node; identifying an interstitial occasion not in any of the configured measurement gaps and corresponding to a time period of at least one time-frequency resource element in a subframe that is transmitted between the wireless device and the radio network node, wherein the at least one time-frequency resource element does not comprise information intended for the wireless device, or is not a time-frequency resource element in which the wireless device is expected to transmit, and wherein the subframe is at least one of the following:
a low-interference subframe comprised in a low-interference subframe pattern used by the radio network node;a subframe not comprised in a restricted measurement subframe pattern used by the radio network node;a subframe comprised in a random access response, RAR, window, which subframe does not overlap with a low-interference subframe comprised in a low-interference subframe pattern used by the radio network node; performing an auxiliary action during the identified interstitial occasion, said auxiliary action comprising performing second inter-frequency or inter-RAT measurements that are not governed by the defined performance measurement requirements; and supplementing the first inter-frequency or inter-RAT measurements with the second inter-frequency or inter-RAT measurements, or otherwise reporting results of the second inter-frequency or inter-RAT measurements to the radio network node as additional measurement information.