US Patent No. 9,148,248

METHOD AND DEVICE FOR FEEDING BACK CHANNEL INFORMATION OF A PLURALITY OF CARRIERS


Patent No. 9,148,248
Issue Date September 29, 2015
Title Method And Device For Feeding Back Channel Information Of A Plurality Of Carriers
Inventorship Xueming Pan, District Beijing (CN)
Zukang Shen, District Beijing (CN)
Assignee CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY, Beijing (CN)

Claim of US Patent No. 9,148,248

1. A method for feeding back channel information of a plurality of carriers, comprising the steps of:
measuring, by a user equipment, channel information over a plurality of downlink carriers; and
upon reception of an instruction to trigger a feedback of channel information transmitted from a base station, transmitting,
by the user equipment, to the base station the measured channel information of corresponding downlink carriers in an obtained
set of downlink carriers required to be measured and fed back;

wherein the transmitting, by the user equipment to the base station, the measured channel information of the downlink carriers
comprises:

performing, by the user equipment, multiplexing and interleaving processes on the measured channel information of the downlink
carriers and uplink data to be transmitted; and mapping uplink data symbols obtained after the interleaving process onto a
corresponding physical resource for transmission; wherein:

performing, by the user equipment, the multiplexing and interleaving processes on the measured channel information of the
downlink carriers and the uplink data to be transmitted comprises:

performing a code block concatenation process on channel-encoded and rate-matched service data, encoding jointly CQI information
of the downlink carriers in the set of downlink carriers, and encoding jointly PMI information of the downlink carriers in
the set of downlink carriers;

multiplexing the jointly encoded CQI information of the downlink carriers, the jointly encoded PMI information of the downlink
carriers and the code block concatenation-processed service data; and

performing the interleaving process on the multiplexed data, RI information of the downlink carriers which is jointly encoded
and ACK/NACK information of the respective downlink carriers which is encoded separately;

or
performing, by the user equipment, the multiplexing and interleaving processes on the measured channel information of the
downlink carriers and the uplink data to be transmitted comprises:

performing a code block concatenation process on channel-encoded and rate-matched service data, encoding jointly CQI information
of the downlink carriers in the set of downlink carriers, and encoding jointly PMI information of the downlink carriers in
the set of downlink carriers;

multiplexing the jointly encoded CQI information of the downlink carriers, the jointly encoded PMI information of the downlink
carriers and the code block concatenation-processed service data; and

performing the interleaving process on the multiplexed data, RI information of the respective downlink carriers which is encoded
separately and ACK/NACK information of the respective downlink carriers which is encoded separately;

or
performing, by the user equipment, the multiplexing and interleaving processes on the measured channel information of the
downlink carriers and the uplink data to be transmitted comprises:

performing a code block concatenation process on channel-encoded and rate-matched service data, and channel-encoding separately
CQI information of the respective downlink carriers, and channel-encoding separately PMI information of the downlink carriers
in the set of downlink carriers;

multiplexing the separately channel-encoded CQI information of the respective downlink carriers, the separately channel-encoded
PMI information and the code block concatenation-processed service data; and

performing the interleaving process on the multiplexed data, the RI information of the respective downlink carriers which
is encoded separately and the ACK/NACK information of the respective downlink carriers which is encoded separately.