Qualcomm Incorporated

Uzma Khan

Sundaresan Tambaram Kailasam

Fan Wang

An-Swol Clement Hu

Harish Venkatachari

Krishna Rao Mandadapu

Preyas Devangbhai Desai

Heechoon Lee

Sharad Deepak Sambhwani

Francesco Pica

Yi Su

Ayyappan Ravichandran

An-Swol C Hu

Methods and apparatus for wireless communication for improving back to back cell reselection that includes establishing that cell reselection to a primary candidate cell has failed. Afterwards, a UE determines if a set of predetermined conditions have been triggered and schedules cell reselection to a secondary candidate based on whether the set of predetermined conditions have been triggered.

Method and apparatus for back to back reselection scheduling upon cell reselection failure

User Equipments (UEs) can be adapted to enter into a lower RRC state from a higher RRC state, and search for one or more layers of higher priority within a predetermined period of time upon entering into the lower RRC state. According to at least one aspect, this search for one or more layers of higher priority may be performed irrespective of RF quality of a current serving cell. According to at least another aspect, this search for one or more layers of higher priority may be conducted within the predetermined period of time if a wait period has elapsed since the UE camped on the current serving cell. If the wait period has not elapsed since camping on the current serving cell, the search for one or more layers of higher priority may be performed within the predetermined period of time following a duration of the wait period.

Apparatus and methods for facilitating cell reselection for higher priority layers

Apparatus and method for wireless communication in a wireless communication network include operating a wireless device on a first wireless communication technology and detecting a first cell in first frequency of a second wireless communication technology. The aspects also include determining the detected cell of the second wireless communication technology satisfies a first reselection criterion based on a first measurement and identifying a second frequency of the second wireless communication technology as an undetected frequency based on monitoring the second frequency without detecting a second cell. Aspects also include expediting a determination of whether to perform cell reselection to the second wireless communication technology based on the undetected frequency and the detected cell of the second wireless communication technology satisfying the first reselection criterion and determining to reselect to the detected cell of the second wireless communication technology.

Apparatus and method of inter-radio access technology measurement scheduling based on an undetected frequency

The present disclosure presents a method and apparatus for regaining service at a user equipment. For example, the disclosure presents a method for receiving a neighbor cell list from a serving cell, and scanning to identify target cells by the user equipment, wherein the target cells include neighbor cells included in the neighbor cell list and detected cells not included in the neighbor cell list. In addition, such an example method may include determining that the user equipment cannot successfully camp on any one of the neighbor cells, and attempting to camp on one of the detected cells. As such, an improved method and apparatus for regaining service at a user equipment may be achieved.

Method and apparatus for regaining service by selecting a detected cell not included in a neighbor cell list (NCL)

The present disclosure presents a method and apparatus for determining reselection parameters for detected cells. For example, the method may include receiving system information block (SIB) data associated with one or more cells in a neighbor cell list (NCL). In such example, the SIB data may include a ranking offset parameter associated with each of the NCL cells. Furthermore, such an example method may include detecting a cell that is not in the NCL, determining a reselection ranking value associated with each of the NCL cells, the detected cell and the serving cell. In addition, in some examples, such method may include ranking the one or more NCL cells, the detected cell and the serving cell in a ranking list based on the reselection ranking values. As such, reselection parameters for detected cells may be determined.

Methods and apparatuses for determining reselection parameters for detected cells

Apparatus and method for wireless communication in a wireless communication network includes operating a wireless device on a first wireless communication technology. Aspects also include detecting a cell of a second wireless communication technology and determining the detected cell of the second wireless communication technology satisfies a first reselection criterion based on a first measurement. Still further the aspects includes expediting a determination of whether to perform cell reselection to the second wireless communication technology based on the detected cell of the second wireless communication technology satisfying the first reselection criterion. Additionally, aspects include determining to reselect to the detected cell of the second wireless communication technology when the at least one new measurement satisfies a second reselection criterion for the reselection time period.

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San Marcos, CA, United States of America

Uzma Khan