US Patent No. 9,686,764

POSITIONING METHOD, DEVICE AND SYSTEM IN MULTI-CARRIER SYSTEM


Patent No. 9,686,764
Issue Date June 20, 2017
Title Positioning Method, Device And System In Multi-carrier System
Inventorship Haiyang Quan, Beijing (CN)
Wei Bao, Beijing (CN)
Assignee China Academy of Telecommunications Technology, Beijing (CN)

Claim of US Patent No. 9,686,764

1. A positioning method in a multi-carrier system, comprising:
aggregating a plurality of cells belonging to a base station for a user equipment;
sending a positioning measurement request to the base station of a cell where the user equipment to be positioned resides
upon reception of a positioning request;

receiving measurement results returned from the base station after performing positioning measurements for the user equipment
on a primary carrier and at least one secondary carrier, in response to the positioning measurement request, wherein the primary
carrier and at least the one secondary carrier are configured to at least two cells of the plurality of aggregated cells for
that user equipment; and

positioning the user equipment according to the measurement results;
wherein the measurement results returned from the base station after performing the positioning measurements for the user
equipment in the at least two cells specifically comprise:

all measurement results obtained by the base station through performing the positioning measurements for the user equipment
in the at least two cells; or

processing results obtained by the base station through performing preset process on measurement results obtained by performing
the positioning measurements for the user equipment in the at least two cells;

wherein all the measurement results obtained by the base station through performing the positioning measurements for the user
equipment in the at least two cells specifically comprise:

Timing Advance, TA, values and Angle of Arrival, AoA, values obtained by the base station through the measurements for the
user equipment in the at least two cells;

wherein when the measurement results returned from the base station after performing the positioning measurements for the
user equipment in the at least two cells include all the measurement results obtained by the base station through performing
the positioning measurements for the user equipment in the at least two cells, positioning the user equipment according to
the measurement results specifically comprises:

performing the preset process on the received measurement results to obtain processing results; and
calculating a location of the user equipment according to the processing results;
wherein performing the preset process on the received measurement results to obtain the processing results specifically comprises
one of the following:

selecting a set of TA value and AoA value with a least TA value among respective received sets of TA values and AoA values
as the processing results;

selecting a least one of respective TA values as a TA value in the processing results and selecting an average value of respective
AoA values as an AoA value in the processing results; and

selecting an average value of respective TA values as a TA value in the processing results and selecting an average value
of respective AoA values as an AoA value in the processing results.