Channel State Information & Beamforming

Methods for acquiring and utilizing accurate channel state information (CSI), including channel estimation and reciprocity transforms, to enable advanced spatial processing techniques like beamforming for improved signal quality and spectral efficiency.

7,958 US filings from 528 companies since 2023 · 2023: 2,027 · 2024: 2,417 · 2025: 2,366 · 2026 YTD: 1,148

Physical Transmission & Modulation

Top companies

Ranked by filings in this theme since 2023. 2026 is partial.

#	Company	Since 2023	2023	2024	2025	2026 YTD	YoY
1	QUALCOMM Incorporated	1,277	393	382	347	155	-9.2%
2	Huawei Technologies Co., Ltd.	711	152	227	222	110	-2.2%
3	SAMSUNG ELECTRONICS CO., LTD.	694	199	203	187	105	-7.9%
4	Apple Inc.	412	96	151	113	52	-25.2%
5	Telefonaktiebolaget LM Ericsson (publ)	396	132	132	92	40	-30.3%
6	ZTE Corporation	287	65	93	96	33	+3.2%
7	Nokia Technologies Oy	285	55	77	115	38	+49.4%
8	BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.	282	43	86	95	58	+10.5%
9	VIVO MOBILE COMMUNICATION CO., LTD.	245	54	74	87	30	+17.6%
10	LG ELECTRONICS INC.	230	72	79	52	27	-34.2%
11	GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.	163	45	44	47	27	+6.8%
12	InterDigital Patent Holdings, Inc.	152	18	30	53	51	+76.7%
13	LENOVO (SINGAPORE) PTE. LTD.	125	41	48	21	15	-56.2%
14	NTT DOCOMO, INC.	113	36	35	27	15	-22.9%
15	MEDIATEK INC.	108	24	26	36	22	+38.5%
16	DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.	108	30	31	36	11	+16.1%
17	SONY GROUP CORPORATION	85	38	18	21	8	+16.7%
18	ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE	82	21	22	23	16	+4.5%
19	Nokia Solutions and Networks Oy	77	13	25	27	12	+8.0%
20	Comcast Cable Communications, LLC	69	21	23	22	3	-4.3%
21	NEC CORPORATION	68	13	22	20	13	-9.1%
22	Lenovo (Beijing) Limited	63	9	24	16	14	-33.3%
23	telefonaktiebolaget lm ericsson (publ)	56	8	26	15	7	-42.3%
24	INTEL CORPORATION	53	8	24	12	9	-50.0%
25	Fujitsu Limited	47	8	8	26	5	+225.0%