IP Library › Granted Patent US 12676716
Granted Patent B2
US 12676716 · App. 17/800,860 · Granted Jul 7, 2026

Method of SRS-assisted sub-band configuration for Type I/II channel state information (CSI)

Inventors: Nadisanka Rupasinghe (Tokyo, JP); Haralabos Papadopoulos (Tokyo, JP); Yuki Matsumura (Tokyo, JP)
Assignee: NTT DOCOMO, INC.
H04L5/0051H04L5/0094H04L25/0224
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Quick Facts
Patent No.
US 12676716
App. No.
17/800,860
Granted
Jul 7, 2026
Kind
B2
Abstract

A wireless communication method is disclosed for a user equipment (UE) in communication with a base station (BS) in a network (NW) that includes receiving from the BS, via higher-layer signaling or downlink control information (DCI), configuration information and configuring reception of one or more Channel State Information-Reference Signals (CSI-RSs) based on the configuration information, where the configuration information includes one or more new values to configurable CSI-RS ports in Type II port-selection codebook.

Claims (13)

1 . A wireless communication method for a user equipment (UE) in communication with a base station (BS) comprising:

receiving from the BS, via higher-layer signaling or downlink control information (DCI), configuration information; and

configuring a layer-specific or layer-common dynamic subband (SB) size configuration using the configuration information,

wherein new states are included in radio resource control (RRC) information element (IE) CSI-AperiodicTriggerStateList with different SB sizes, and

wherein an appropriate state is selected based on channel conditions.

2 . The wireless communication method according to claim 1 , wherein an explicit configuration of a SB size is configured based on channel condition with or without delay pre-compensation.

3 . The wireless communication method according to claim 1 , further comprising:

selecting one out of multiple SB sizes which are configured by higher-layer signaling.

4 . The wireless communication method according to claim 1 , further comprising:

selecting one out of multiple SB sizes defined for a predetermined bandwidth part.

5 . The wireless communication method according to claim 1 further comprising:

performing dynamic selection of one out of multiple channel state information (CSI) reporting SB configurations for a predetermined number of SBs.

6 . The wireless communication method according to claim 5 , wherein new states are included in RRC IE CSI-AperiodicTriggerStateList with different CSI reporting SB configurations for a predetermined number of SBs.