US 12,069,532 B2
Roaming coverage evaluation
Krishnan Venkataraghavan, Tokyo (JP); Hiroshi Takeshita, Tokyo (JP); and Sharad Sriwastawa, Tokyo (JP)
Assigned to RAKUTEN MOBILE, INC., Tokyo (JP)
Filed by Rakuten Mobile, Inc., Tokyo (JP)
Filed on Oct. 6, 2021, as Appl. No. 17/495,759.
Prior Publication US 2023/0106631 A1, Apr. 6, 2023
Int. Cl. H04W 36/32 (2009.01); H04W 36/00 (2009.01); H04W 36/18 (2009.01); H04W 84/04 (2009.01)
CPC H04W 36/32 (2013.01) [H04W 36/0061 (2013.01); H04W 36/0094 (2013.01); H04W 36/18 (2013.01); H04W 84/042 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A computer readable storage medium including instructions executable by a computer to cause the computer to perform operations comprising:
receiving a roaming handover message including an error code, the roaming handover message identifies a serving cell connected to a home network and a touch point connected to a roaming network;
verifying whether the touch point is accepting roaming handovers by retrieving roaming information from the touch point;
retrieving a signal report from a terminal served by the serving cell in response to determining that the touch point is not accepting roaming handovers;
determining a signal strength difference between a signal of the touch point and a signal of a cell neighboring the touch point; and
mitigating coverage loss due to the touch point not accepting roaming handovers based on the signal strength difference.