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US 12,615,579 B2Granted
Method to improve UE performance by reducing scan on legacy GSM/WCDMA
AssigneeQUALCOMM Incorporated
InventorsHarish Reddy Kothakapu, Bhanu Kiran Janga, Sohrab Ahmad
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Abstract
This disclosure provides systems, devices, apparatus, and methods, including computer programs encoded on storage media, for a scan reduction associated with legacy RATs. A UE may receive, from a database, an indication that a first RAT is unavailable for communications associated with a PLMN. The indication that the first RAT is unavailable may be based on one or more unsuccessful scans for the first RAT. The UE may scan for a second RAT based on a skipped scan for the first RAT. The skipped scan may be based on the indication that the first RAT is unavailable. The UE may communicate with the PLMN based on the scan for the second RAT and the skipped scan for the first RAT.
Claims26
An apparatus for wireless communication at a user equipment (UE), comprising:
- memory;
- and
- at least one processor coupled to the memory and configured to:
- scan, during an ON period, a full band of all radio access technologies (RATs) supported by the UE for attempting to acquire service for communications associated with a public land mobile network (PLMN), wherein the scan includes one or more scans for a first RAT, wherein the full band of all RATs supported by the UE includes at least one bandwidth other than a bandwidth associated with the first RAT;
- store, in a non-access stratum (NAS) database of the UE and responsive to the one or more scans for the first RAT being unsuccessful, an indication that the first RAT is unavailable for the communications associated with the PLMN;
- attempt to acquire service for the communications associated with the PLMN, wherein the attempt to acquire the service is unsuccessful;
- scan for a second RAT for re-attempting to acquire the service for the communications associated with the PLMN based on a skipped scan for the first RAT, the skipped scan being based on the indication stored in the NAS database that the first RAT is unavailable for the communications associated with the PLMN;
- and
- communicate with the PLMN based on the scan for the second RAT and the skipped scan for the first RAT.
6 more elements
A method of wireless communication at a user equipment (UE), comprising:
- scanning, during an ON period, a full band of all radio access technologies (RATs) supported by the UE for attempting to acquire service for communications associated with a public land mobile network (PLMN), wherein the scan includes one or more scans for a first RAT, wherein the full band of all RATs supported by the UE includes at least one bandwidth other than a bandwidth associated with the first RAT;
- storing, in a non-access stratum (NAS) database of the UE and responsive to the one or more scans for the first RAT being unsuccessful, an indication that the first RAT is unavailable for the communications associated with the PLMN;
- attempting to acquire service for the communications associated with the PLMN, wherein the attempt to acquire the service is unsuccessful;
- scanning for a second RAT for re-attempting to acquire the service for the communications associated with the PLMN based on a skipped scan for the first RAT, the skipped scan being based on the indication stored in the NAS database that the first RAT is unavailable for the communications associated with the PLMN;
- and
- communicating with the PLMN based on the scan for the second RAT and the skipped scan for the first RAT.
3 more elements
An apparatus for wireless communication at a user equipment (UE), comprising:
- means for scanning, during an ON period, a full band of all radio access technologies (RATs) supported by the UE for attempting to acquire service for communications associated with a public land mobile network (PLMN), wherein the scan includes one or more scans for a first RAT, wherein the full band of all RATs supported by the UE includes at least one bandwidth other than a bandwidth associated with the first RAT;
- means for storing, in a non-access stratum (NAS) database of the UE and responsive to the one or more scans for the first RAT being unsuccessful, an indication that the first RAT is unavailable for the communications associated with the PLMN;
- means for attempting to acquire service for the communications associated with the PLMN, wherein the attempt to acquire the service is unsuccessful;
- means for scanning for a second RAT for re-attempting to acquire the service for the communications associated with the PLMN based on a skipped scan for the first RAT, the skipped scan being based on the indication store in the NAS database that the first RAT is unavailable for the communications associated with the PLMN;
- and
- means for communicating with the PLMN based on the scan for the second RAT and the skipped scan for the first RAT.
3 more elements
A non-transitory computer-readable medium storing computer executable code at a user equipment (UE), the code when executed by at least one processor causes the at least one processor to:
- scan, during an ON period, a full band of all radio access technologies (RATs) supported by the UE for attempting to acquire service for communications associated with a public land mobile network (PLMN), wherein the scan includes one or more scans for a first RAT, wherein the full band of all RATs supported by the UE includes at least one bandwidth other than a bandwidth associated with the first RAT;
- store, in a non-access stratum (NAS) database of the UE and responsive to the one or more scans for the first RAT being unsuccessful, an indication that the first RAT is unavailable for the communications associated with the PLMN;
- attempt to acquire service for the communications associated with the PLMN, wherein the attempt to acquire the service is unsuccessful;
- scan for a second RAT for re-attempting to acquire the service for the communications associated with the PLMN based on a skipped scan for the first RAT, the skipped scan being based on the indication stored in the NAS database that the first RAT is unavailable for the communications associated with the PLMN;
- and
- communicate with the PLMN based on the scan for the second RAT and the skipped scan for the first RAT.
3 more elements
Dependencies are inferred from the claim text.