Mobile Station with a Semi-Active Mode
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsKrister Sundberg, Benny Lennartson
Life of this patent
Estimating the term…
Abstract
In a mobile station for use in a cellular radio system, the mobile station is adapted to increase radio measurements relating to the currently best cell at times when the user is preparing to set up a call in order to increase the likelihood that a mobile station is camping in the correct cell when setting up a call. This is obtained by adding a third mode to the already existing idle and active modes. The additional mode provides for an increased amount of idle mode measurements compared to the conventional idle mode.
Claims16
1-14. (canceled)
A mobile station for use in a cellular radio system comprising a multitude of base stations, said mobile station being adapted to enter a first mode while not connected to the cellular radio system and a second mode while connected to the cellular radio system, the mobile station further adapted to perform radio system measurements at a predetermined time interval while in the first mode, the mobile station further being adapted to determine the base station providing the strongest signal from said radio measurements, and the mobile station further adapted to enter a third mode wherein radio measurements are performed more frequently than in said first mode in response to at least one predetermined trigger event.
A method of switching between different modes of operation in a mobile station for use in a cellular radio system including a multitude of base stations, said method comprising:
- operating in a first mode while not connected to the cellular radio system and in a second mode while connected to the cellular radio system;
- performing radio system measurements at a predetermined time interval while in the first mode, to determine the best base station to connect to;
- and
- entering a third mode of operation wherein radio measurements are performed more frequently than in said first mode, in response to at least one predetermined trigger event.
The method according to 22, wherein the mobile station supports at least one of Wideband Code Division Multiple Access (WCDMA), Long Term Extension (LTE), Wireless Local Area Network (WLAN), and Wideband Interoperability for Microwave Access (WiMAX) standards.
A method of increasing the likelihood that a mobile station is camping in the correct cell of a communication network for call setup, said method comprising:
- monitoring for a call setup trigger while said mobile station is operating in an inactive mode wherein the mobile station is not connected to the communication network and is infrequently performing radio system measurements for determining the best base station to connect to for call setup;
- and
- in response to detecting a call setup trigger, switching to a semi-active mode, wherein the mobile station is not connected to the communication network in an active mode, but performs radio system measurements more frequently than in the inactive mode, for more reliable identification of the best base station to connect to.
Dependencies are inferred from the claim text.