Granted Patent B2

US 12,587,929 · App. 18/630,572 · Granted Mar 24, 2026

Inventors: Diana Pani (Montreal, CA); Rocco DiGirolamo (Laval, CA); Christopher R. Cave (Dollard-des-Ormeaux, CA); Paul Marinier (Brossard, CA); Benoit Pelletier (Roxboro, CA)

Assignee: Pantech Wireless, LLC

H04W36/30H04W8/26H04W24/10H04W36/0072H04W36/0088H04W36/04H04W36/08H04W36/165H04W36/302H04W36/36H04W36/362H04W74/0833H04W88/08

Abstract

Claims (33)

1 . A method performed by a user device configured for operation in a first state and a second state, the first state being characterized by the user device using additional accessibility than the second state, the method comprising:

performing a measurement on one or more cells neighboring a first cell;

transmitting, in the first state, information obtained from the measurement to the first cell;

receiving, in the first state, a first message indicating information on a second cell, that is not the first cell, for the user device to select for communication; and

in response to receiving the first message, the method further comprising:

transitioning from the first state to the second state associated with the first cell;

resetting a sequence number and a buffer associated with the first cell;

ceasing use of a first device identifier associated with the first cell;

performing a random access transmission to the second cell;

receiving a second message including a second device identifier associated with the second cell; and

communicating with the second cell using the received second device identifier.

2 . The method of claim 1 , further comprising transmitting, in the first state, an indication of one or more desired target cells to the first cell.

3 . The method of claim 2 , wherein the indication includes identifiers of the one or more desired target cells.

4 . The method of claim 1 , further comprising initiating a timer in response to receiving the first message.

5 . The method of claim 1 , further comprising transitioning from the second state to the first state in response to receiving the second message.

6 . The method of claim 1 , further comprising receiving broadcasted system information of the second cell.

7 . A user device configured for operation in a first state and a second state, the first state being characterized by the user device using additional accessibility than the second state, the user device comprising:

a transceiver and a processor configured to cause the user device to:

perform a measurement on one or more cells neighboring a first cell;

transmit, in the first state, information obtained from the measurement to the first cell;

receive, in the first state, a first message indicating information on a second cell, that is not the first cell, for the user device to select for communication; and

in response to receiving the first message:

transition from the first state to the second state associated with the first cell;

reset a sequence number and a buffer associated with the first cell;

cease use of a first device identifier associated with the first cell;

perform a random access transmission to the second cell;

receive a second message including a second device identifier associated with the second cell; and

communicate with the second cell using the received second device identifier.

8 . The user device of claim 7 , wherein the transceiver and a processor are configured to cause the user device to transmit, in the first state, an indication of one or more desired target cells to the first cell.

9 . The user device of claim 8 , wherein the indication includes identifiers of the one or more desired target cell.

10 . The user device of claim 7 , wherein the transceiver and a processor are configured to cause the user device to initiate a timer in response to receiving the first message.

11 . The user device of claim 7 , wherein the transceiver and a processor are configured to cause the user device to transition from the second state to the first state in response to receiving the second message.

12 . The user device of claim 7 , wherein the transceiver and a processor are configured to cause the user device to receive broadcasted system information of the second cell.

Continuity (9)

References Cited (370)