Inventor
ZHANG CHENGJIN
US40 patents
⚠️ This page may combine multiple inventors who share the name “ZHANG CHENGJIN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BROADCOM CORP
12 patentsUS7630337B2Dec 8, 2009
Method and system for an improved user group selection scheme with finite-rate channel state information feedback for FDD multiuser MIMO downlink transmission
BROADCOM CORP90 citations98
US7515878B2Apr 7, 2009
Method and system for greedy user group selection with range reduction for FDD multiuser MIMO downlink transmission with finite-rate channel state information feedback
BROADCOM CORP48 citations96
US7636553B2Dec 22, 2009
Double search user group selection scheme with range reduction for FDD multiuser MIMO downlink transmission with finite-rate channel state information feedback
BROADCOM CORP15 citations92
US7899421B2Mar 1, 2011
Double search algorithm of user group selection for multiuser MIMO downlink transmission
BROADCOM CORP7 citations84
US7839842B2Nov 23, 2010
Method and system for a range reduction scheme for user selection in a multiuser MIMO downlink transmission
BROADCOM CORP14 citations84
US7826416B2Nov 2, 2010
Method and system for a simplified user group selection scheme with finite-rate channel state information feedback for FDD multiuser MIMO downlink transmission
BROADCOM CORP8 citations84
US7917100B2Mar 29, 2011
Method and system for a double search user group selection scheme with range in TDD multiuser MIMO downlink transmission
BROADCOM CORP4 citations74
US7903609B2Mar 8, 2011
Method and system for an improved user group selection scheme with finite-rate channel state information feedback for FDD multiuser MIMO downlink transmission
BROADCOM CORP5 citations74
US7917101B2Mar 29, 2011
Method and system for a greedy user group selection with range reduction in TDD multiuser MIMO downlink transmission
BROADCOM CORP1 citations63
US9282450B2Mar 8, 2016
Method and system for a greedy user group selection with range reduction in TDD multiuser MIMO downlink transmission
BROADCOM CORP0 citations52
US8045932B2Oct 25, 2011
Double search user group selection scheme with range reduction for FDD multiuser MIMO downlink transmission with finite-rate channel state information feedback
BROADCOM CORP0 citations52
US7936808B2May 3, 2011
Channel quantization for multiuser diversity
BROADCOM CORP1 citations52
QUALCOMM INC
12 patentsUS10412704B2Sep 10, 2019
Enhanced discontinuous reception design for a shared frequency band
QUALCOMM INC13 citations84
US10034269B2Jul 24, 2018
Enhanced discontinuous reception design for a shared frequency band
QUALCOMM INC11 citations84
US10999886B2May 4, 2021
Techniques for harmonization between CRS and DM-RS based transmission modes in unlicensed spectrum
QUALCOMM INC3 citations73
US10212619B2Feb 19, 2019
Managing secondary cell connections in unlicensed spectrum
QUALCOMM INC6 citations71
US10952142B2Mar 16, 2021
Energy-efficient paging in wireless networks
QUALCOMM INC1 citations63
US12537730B1Jan 27, 2026
Different symbol lengths for A-IoT inventory rounds
QUALCOMM INC0 citations62
US10375685B2Aug 6, 2019
Secondary timing advance groups with only license assisted access secondary cells
QUALCOMM INC1 citations62
US12463462B2Nov 4, 2025
Multi-capacitor energy harvesting
QUALCOMM INC0 citations58
US10499255B2Dec 3, 2019
Discovery reference signal (DRS) search modes and mode switching techniques
QUALCOMM INC0 citations52
US9236929B2Jan 12, 2016
Combined intelligent receive diversity (IRD) and mobile transmit diversity (MTD) with independent antenna switching for uplink and downlink
QUALCOMM INC1 citations52
US12550065B2Feb 10, 2026
Energy harvesting tag random access and uplink scheduling
QUALCOMM INC0 citations51
US10560957B2Feb 11, 2020
Out-of-sync grant handling in a wireless communication system
QUALCOMM INC0 citations49
ZHANG CHENGJIN
6 patentsUS8515360B2Aug 20, 2013
Method and system for greedy user group selection with range reduction for FDD multiuser MIMO downlink transmission with finite-rate channel state information feedback
ZHANG CHENGJIN1 citations62
US8233848B2Jul 31, 2012
Method and system for a greedy user group selection with range reduction in TDD multiuser MIMO downlink transmission
ZHANG CHENGJIN3 citations62
US8150330B2Apr 3, 2012
Method and system for greedy user group selection with range reduction for FDD multiuser MIMO downlink transmission with finite-rate channel state information feedback
ZHANG CHENGJIN4 citations62
US8738053B2May 27, 2014
Method and system for finding a threshold for semi-orthogonal user group selection in multiuser MIMO downlink transmission
ZHANG CHENGJIN3 citations59
US8521103B2Aug 27, 2013
Method and system for a greedy user group selection with range reduction in TDD multiuser MIMO downlink transmission
ZHANG CHENGJIN0 citations51
US8284769B2Oct 9, 2012
Method and system for a range reduction scheme for user selection in a multiuser MIMO downlink transmission
ZHANG CHENGJIN0 citations51
ZHENG JUN
5 patentsUS8934432B2Jan 13, 2015
Method and system for a double search user group selection scheme with range reduction in TDD multiuser MIMO downlink transmission
ZHENG JUN1 citations63
US8412128B2Apr 2, 2013
Method and system for a double search user group selection scheme with range reduction in TDD multiuser MIMO downlink transmission
ZHENG JUN2 citations63
US8503382B2Aug 6, 2013
Method and system for a simplified user group selection scheme with finite-rate channel state information feedback for FDD multiuser MIMO downlink transmission
ZHENG JUN0 citations52
US8300723B2Oct 30, 2012
Channel quantization for multiuser diversity
ZHENG JUN0 citations52
US8121567B2Feb 21, 2012
Double search algorithm of user group selection for multiuser MIMO downlink transmission
ZHENG JUN1 citations52