公开(公告)号：US20230300779A1

公开(公告)日：2023-09-21

申请号：US18184240

申请日：2023-03-15

Applicant: EXFO OY

Inventor： Juha Olavi LEHTIKANGAS ,  Tuure Risto MAKELA ,  Antti Mauno Ilmari JAASKI ,  Taisto Antero NIIRANEN

IPC: H04W64/00 ,  H04W36/06 ,  H04W16/28

CPC classification number: H04W64/00 ,  H04W36/06 ,  H04W16/28 ,  H04W84/18

Abstract: An ad hoc radio base station and a method for locating a user apparatus are presented. The method comprises setting up two ad hoc cells, a first cell of the two ad hoc cells providing an omnidirectional cell and a second cell of the ad hoc cells providing a directional cell, utilizing a set of directional or beamforming antennas, the main lobes of the antennas of the cells being directed at different directions from each other, one antenna of the second cell being active at a time; setting up a radio connection in one of the two ad hoc cells to an user apparatus; obtaining information on the signal-to-noise ratio measured by the user apparatus from of the signal received by the user apparatus and Timing Advance required on the radio connection; transmitting a redirection message to other cell in the first radio connection to the user apparatus.

公开(公告)号：US20230300896A1

公开(公告)日：2023-09-21

申请号：US18115036

申请日：2023-02-28

Applicant: EXFO OY

Inventor： Jukka KEMPPAINEN ,  Juha Olavi LEHTIKANGAS

IPC: H04W74/08 ,  H04W76/20 ,  H04W76/10

CPC classification number: H04W74/0833 ,  H04W76/10 ,  H04W76/20

Abstract: Base stations, system, methods, and computer programs are disclosed to implement two successive or simultaneous ad hoc (Long-Term Evolution) LTE cells. The successive LTE cells are set up successively on a same channel number but with different Physical Cell IDs (PCID) and Tracking Area Codes (TAC). The simultaneous LTE cells are set up simultaneously on different channel numbers, and with different PCIDs and TACs. A radio connection is set up in the ad hoc LTE cell to an LTE user apparatus, and a Non-Access Stratum (NAS) timer is set simultaneously. The following is repeated until a predetermined period of time remains before an expiry of the NAS timer: commanding the LTE user apparatus to use full buffer in all uplink messages; forcing the LTE user apparatus to send uplink messages; and receiving a reply message from the LTE user apparatus.