Method of processing received digitized signals and mobile radio communication terminal device

Patent metadata

Field	Value
Publication number	US-2016183272-A1
Application number	US-201414580243-A
Country	US
Kind code	A1
Filing date	Dec 23, 2014
Priority date	Dec 23, 2014
Publication date	Jun 23, 2016
Grant date	—

Abstract

A method for performing a mobile radio cell search may include receiving one or more wireless signals from one or more mobile radio cells as part of a first partial mobile radio cell search; determining a reliability metric and a mobile radio cell detection occurrence count for each of the one or more mobile radio cells based on the one or more received wireless signals; and performing a second partial mobile radio cell search for one or more mobile radio cells having a reliability metric or mobile radio cell detection occurrence count that satisfies a predefined condition. Alternatively, a method for performing a mobile radio cell search may include performing a second partial mobile radio cell search only for mobile radio cells having a reliability metric that satisfies a predefined condition

First claim

What is claimed is:

1 . A mobile radio communication terminal device comprising:
a receiver configured to receive one or more wireless signals from one or more mobile radio cells; a first circuit configured to determine a reliability metric and a mobile radio cell detection occurrence count for each of the one or more mobile radio cells based on the one or more received wireless signals; and a second circuit configured to perform a partial mobile radio cell search for one or more mobile radio cells having a reliability metric or mobile radio cell detection occurrence count that satisfies a predefined criterion.

2 . The mobile radio communication terminal device of claim 1 , wherein the second circuit is further configured to update a list of valid candidate mobile radio cells based on a result of the partial mobile radio cell search.

3 . The mobile radio communication terminal device of claim 1 , further comprising a third circuit configured to select one or more mobile radio cells having a reliability metric or mobile radio cell detection occurrence count that satisfies a predefined criterion, and wherein the second circuit is configured to perform a partial mobile radio cell search on the cells selected by the third circuit.

4 . The mobile radio communication terminal device of claim 1 , wherein at least one of the reliability metrics determined by the first circuit is a signal power measurement.

5 . The mobile radio communication terminal device of claim 4 , wherein the predefined criterion is a signal power threshold or a number of past mobile radio cell detection occurrences.

6 . The mobile radio communication terminal device of claim 5 , wherein the second circuit is configured to perform the partial mobile radio cell search for one or more mobile radio cells having a signal power measurement that satisfies a predefined threshold or for one or more mobile radio cells that have been previously detected at least one time.

7 . The mobile radio communication terminal device of claim 6 , wherein the partial mobile radio cell search comprises a signal power or signal quality measurement, and wherein the signal power measurement performed by the first circuit is completed in a shorter time period than the signal power or signal quality measurement of the partial mobile radio cell search.

8 . The mobile radio communication terminal device of claim 1 , wherein each reliability metric is determined based on a measurement of a synchronization sequence contained in one of the received wireless signals or a cell specific reference signal.

9 . The mobile radio communication terminal device of claim 1 , further comprising a third circuit configured to increment the mobile radio cell detection occurrence count for a mobile radio cell each time a wireless signal is received from the mobile radio cell.

10 . The mobile radio communication terminal device of claim 9 , wherein the third circuit is configured to discard the mobile radio cell detection occurrence count for a mobile radio cell if a predefined amount of time has passed since the last reception of a wireless signal from the mobile radio cell.

11 . The mobile radio communication terminal device of claim 1 , wherein the partial mobile radio cell search comprises a reference signal receive power (RSRP) or reference signal receive quality (RSRQ) measurement.

12 . A method for performing a mobile radio cell search, the method comprising:
performing a first partial mobile radio cell search comprising:
receiving one or more wireless signals from one or more mobile radio cells;
determining a reliability metric and a mobile radio cell detection occurrence count for each of the one or more mobile radio cells based on the one or more received wireless signals; and
performing a second partial mobile radio cell search for one or more mobile radio cells having a reliability metric or mobile radio cell detection occurrence count that satisfies a predefined criterion.

13 . The method of claim 12 , further comprising updating a list of valid candidate mobile radio cells based on a result of the second partial mobile radio cell search.

14 . The method of claim 12 , wherein each reliability metric is determined based on a measurement of a synchronization sequence contained in one of the received wireless signals or a cell specific reference signal.

15 . A mobile radio communication terminal device comprising:
a receiver configured to receive one or more wireless signals from one or more mobile radio cells; a first circuit configure to determine a reliability metric for each of the one or more mobile radio cell based on a signal level measurement of one of the wireless signals; and a second circuit configured to perform a partial mobile radio cell search only for mobile radio cells having a reliability metric that satisfies a predefined criterion.

16 . The mobile radio communication terminal device of claim 15 , wherein the second circuit is further configured to update a list of valid candidate mobile radio cells based on a result of the partial mobile radio cell search.

17 . The mobile radio communication terminal device of claim 15 , wherein the signal level measurement is a first signal power measurement, and wherein the predefined criterion is a signal power threshold.

18 . The mobile radio communication terminal device of claim 17 , wherein the partial mobile radio cell search comprises a second signal power or signal quality measurement, and wherein the first signal power measurement is completed in a shorter time period than the second signal power or signal quality measurement.

19 . The mobile radio communication terminal device of claim 15 , wherein each reliability metric is determined based on a measurement of a synchronization sequence contained in one of the received wireless signals or a cell specific reference signal.

20 . The mobile radio communication terminal device of claim 15 , wherein the partial mobile radio cell search comprises a reference signal receive power (RSRP) or a reference signal receive quality (RSRQ) measurement.

Assignees

• Intel Corp

Inventors

• Pu Tian Yan
• Miao Honglei

Classifications

• H04W72/542 Primary

  using measured or perceived quality · CPC title

• H04B17/328

  Reference signal received power [RSRP]; Reference signal received quality [RSRQ] · CPC title

• H04B17/318

  Received signal strength · CPC title

• H04W72/085 Primary

  Electricity · mapped topic

• H04W24/08

  Testing, {supervising or monitoring} using real traffic · CPC title