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1. (WO2009121025) SENDING CONTROL INFORMATION FOR USERS SHARING THE SAME RESOURCE

Pub. No.:    WO/2009/121025    International Application No.:    PCT/US2009/038676
Publication Date: Oct 1, 2009 International Filing Date: Mar 27, 2009
IPC: H04W 72/12
Applicants: QUALCOMM INCORPORATED
LUO, Tao
MONTOJO, Juan
GAAL, Peter
SARKAR, Sandip
ZHANG, Xiaoxia
Inventors: LUO, Tao
MONTOJO, Juan
GAAL, Peter
SARKAR, Sandip
ZHANG, Xiaoxia
Title: SENDING CONTROL INFORMATION FOR USERS SHARING THE SAME RESOURCE
Abstract:
Method for sending control information (e.g. downlink resource assignment, scheduling assignment, scheduling grant, etc.) to multiple user terminals that share the same resources in a Spatial Division Multiple Access (SDMA) wireless system. The- control information can be transmitted from an access point over a physical down link control channel (PDCCH) that is common for a plurality of user terminals. The overall PDCCH overhead can thus be reduced due to a smaller number of required PDCCH in the SDMA wireless system. The user terminals are grouped. An SDMA identification is assigned to each UE in a group. Common search space. C-RNTI. CRC. Masking a portion of a message comprising control information based on SDMA IDs.