US Patent No. 10,973,030

ASYMMETRIC BANDWIDTH SUPPORT AND DYNAMIC BANDWIDTH ADJUSTMENT


Patent No. 10,973,030
Issue Date April 06, 2021
Title Asymmetric Bandwidth Support And Dynamic Bandwidth Adjustment
Inventorship Tarik Tabet, Los Gatos, CA (US)
Haijing Hu, Beijing (CN)
Dawei Zhang, Saratoga, CA (US)
Yuchul Kim, Santa Clara, CA (US)
Assignee Apple Inc., Cupertino, CA (US)

Claim of US Patent No. 10,973,030

1. A base station, comprising:a radio; and
a processor coupled to the radio and configured to cause the base station to:
provide a cell according to a cellular system bandwidth;
establish a cellular communication link with a wireless device on the cell;
determine a largest maximum physical uplink shared channel (PUSCH) bandwidth for the wireless device and a largest maximum physical downlink shared channel (PDSCH) bandwidth for the wireless device, wherein said determining is based on one or more of a device category of the wireless device or a coverage enhancement mode, wherein at least one of the respective largest maximum bandwidths are equal to or greater than a narrowband bandwidth of 6 resource blocks;
receive information from the wireless device;
indicate, to the wireless device via an RRCConnectionReconfiguration message, at least one of an uplink bandwidth allocation for PUSCH operation for the wireless device or a downlink bandwidth allocation for PDSCH operation for the wireless device, wherein the RRCConnectionReconfiguration message is configured to cause the wireless device to operate in a mode according to the at least one of the downlink bandwidth allocation for PDSCH operation for the wireless device or the uplink bandwidth allocation for PUSCH operation for the wireless device, wherein the uplink bandwidth allocation for PUSCH operation for the wireless device is equal to or less than the largest maximum PUSCH bandwidth for the wireless device and the downlink bandwidth allocation for PUSCH operation for the wireless device is equal to or less than the largest maximum PDSCH bandwidth for the wireless device, wherein the at least one of the uplink bandwidth allocation for PUSCH operation for the wireless device or the downlink bandwidth allocation for PDSCH operation for the wireless device is based on the information from the wireless device, wherein the uplink bandwidth allocation for PUSCH operation for the wireless device and the downlink bandwidth allocation for PDSCH operation for the wireless device are different sizes;
indicate radio resources for PDSCH and PUSCH communications to the wireless device using a narrowband machine type communication (MTC)-Physical downlink control channel (MPDCCH), wherein the narrowband MPDCCH corresponds to a bandwidth of 6 resource blocks, wherein the radio resources for the PDSCH and PUSCH communications correspond to amounts of bandwidth that are less than or equal to the downlink bandwidth allocation for PDSCH operation for the wireless device and the uplink bandwidth allocation for PUSCH operation for the wireless device, respectively; and
perform PDSCH and PUSCH communications with the wireless device on the radio resources for PDSCH and PUSCH communications.