公开(公告)号：GB2634987A

公开(公告)日：2025-04-30

申请号：GB202407282

申请日：2024-05-22

Applicant: APPLE INC

Inventor： FUCHENG WANG ,  ANATOLIY S IOFFE

IPC: H04B17/19 ,  H04B17/24 ,  H04W52/14 ,  H04W52/36 ,  H04W72/541

Abstract: Embodiments disclosed herein relate to techniques for determining a maximum sensitivity degradation (MSD) value at a user equipment (UE) and sending the value to a network for scheduling a frequency band combination for uplink and/or downlink communication. The network configures the frequency band combination for the UE and determines whether there may be potential interference when the UE uses the frequency band combination. If so, then the network sends an indication to the UE to deactivate uplink transmission. The UE then determines reference sensitivity (REFSENS) of its receiver when the network does not send a downlink transmission on the frequency band combination. The UE sets its transmitter to transmit with a predetermined (e.g., maximum) transmission power, sends uplink transmissions, and determines an interference power when operating using the frequency band combination. The UE then determines the MSD value based on the REFSENS and the interference power.

公开(公告)号：GB2634361A

公开(公告)日：2025-04-09

申请号：GB202407302

申请日：2024-05-22

Applicant: APPLE INC

Inventor： FUCHENG WANG ,  ANATOLIY S IOFFE ,  ANKIT BHAMRI ,  HAITONG SUN

IPC: H04L5/00 ,  H04W36/00

Abstract: A method for a user equipment (UE) to receive from a network device an indication of a first carrier and a second carrier in a same frequency band, e.g. intra-band carriers. The indication may relate to the implementation of non-contiguous uplink carrier aggregation. A first local oscillator (LO), 82A, is configured to generate a first frequency of the first carrier, FCC1. A first set of signals is transmitted using a plurality of transmission paths,70A & 70B, using the first carrier, i.e. Multiple-Input Multiple-Output (MIMO) transmission. The first LO is reconfigured to generate a second frequency of the second carrier, FCC2 and a second set of signals is transmitted using the plurality of transmission paths using the second carrier. Alternatively, the UE may include a second LO that generates the second frequency and couples the second LO to the transmission paths when transmitting using the second carrier. The advantage of the invention is the user equipment may use the same radio resource control (RRC) configuration (i.e. not require a RRC reconfiguration) when switching between the two carriers, since there may be no change in primary cell and/or secondary cell designation.