US Patent No. 9,516,583

METHOD AND DEVICE FOR OBTAINING DUPLEX MODE INFORMATION OF USER EQUIPMENT


Patent No. 9,516,583
Issue Date December 06, 2016
Title Method And Device For Obtaining Duplex Mode Information Of User Equipment
Inventorship Xueming Pan, Beijing (CN)
Jinling Hu, Beijing (CN)
Guojun Xiao, Beijing (CN)
Jie Zhang, Beijing (CN)
Libo Wang, Beijing (CN)
Deshan Miao, Beijing (CN)
Yu Yang, Beijing (CN)
Assignee CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY, Beijing (CN)

Claim of US Patent No. 9,516,583

1. A method for obtaining duplex mode information of a User Equipment, UE, comprising:
a base station configuring a plurality of different mutually orthogonal sets of Physical Random Access Channel, PRACH, resources
respectively for UE in a first type of duplex mode and UE in a second type of duplex mode, wherein locations in time and frequency
of the orthogonal sets of PRACH resources for UE in a first type of duplex mode are different from locations in time and frequency
of the orthogonal sets of PRACH resources for UE in a second type of duplex mode;

the base station signaling configuration information comprising the locations in time and frequency of the configured plurality
of different mutually orthogonal sets of PRACH channel resources to the UE in the first type of duplex mode and the UE in
the second type of duplex mode in system broadcast;

the base station detecting a random access signal which a UE initiates after selecting one among the set of PRACH channel
resources in compliance with the type of duplex mode of the UE upon knowledge of the configuration information; and

the base station determining the type of duplex mode of the UE according to the location in time and frequency of the PRACH
channel resource of the detected random access signal initiated from the UE.