Configuration of requirements on measurement time for cell reselection procedures including autonomous closed subscriber group, CSG, cell search and reselection

Abstract

Requirements on measurement time to perform measurements that require the User Equipment to tune its receiver to other frequencies are configured in different ways and depending on the length of the OFF time periods and the measurements to be performed, so as to fulfill various requirements on measurement time while allowing autonomous reselection to CSG in CELL FACH. Accordingly, a User Equipment, UE, performs measurements of a plurality of measurement types. The UE performs a measurement of a first measurement type on at least one Closed Subscriber Group, CSG, cell; at least one of a measurement of a second type on at least one carrier frequency of lower or equal priority compared to that of the serving carrier frequency; and a third measurement type on at least one carrier frequency of higher priority compared to that of the serving carrier frequency. In the performed measurements: (a) the at least one of a measurement of the second and the third measurement type is performed during a required time such that first pre-defined requirements for the at least one of a measurement of the second and third measurement type are met, the required time forming part of a time available for measurements, and (b) the measurement of the first measurement type is performed during a remaining time, during which the at least one of a measurement of the second measurement type and a measurementof the third measurement type is not performed wherein the required time and the remaining time form different parts of the time available for measurements (e.g. periods of receiver OFF time of a Discontinuous Reception, DRX, cycle) which are configured by a network node. The application is directed to a User Equipment, a network node and corresponding methods.

Description

technical field [0001] Embodiments herein relate to a user equipment, a network node, and methods therein. In particular, it relates to performing measurements of multiple measurement types and configuring user equipment to perform measurements of the multiple measurement types. Background technique [0002] A communication device, such as a terminal, is also known as eg User Equipment (UE), mobile terminal, wireless terminal, and / or mobile station. Terminals are enabled to communicate wirelessly in a cellular communication network or wireless communication system (sometimes also referred to as a cellular radio system or cellular network). Via a radio access network (RAN) comprised within or connected to a cellular communication network and possibly one or more core networks, it is possible, for example, between two terminals, between a terminal and a fixed telephone, and / or perform communication between the terminal and the server. [0003] A terminal may further be ref...

AI Technical Summary

Problems solved by technology

The second possibility is to configure the DRX cycle

In other words, for some DRX configurations, if the UE does not use the entire off-time for measurements for reselection evaluation in CELL_FACH, the UE may not be able to meet the existing measurement requirements

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