Uplink control information transmitting method and apparatus

Patent metadata

Field	Value
Publication number	US-2016338041-A1
Application number	US-201615155638-A
Country	US
Kind code	A1
Filing date	May 16, 2016
Priority date	May 14, 2015
Publication date	Nov 17, 2016
Grant date	—

Abstract

An uplink control information (UCI) transmitting method is provided. In this method, a user equipment (UE) receives a configuration signaling, determines a candidate physical uplink control channel (PUCCH) set corresponding to an acknowledgement (ACK)/negative acknowledgement (NACK) resource indication (ARI), receives a downlink grant signaling and downlink data corresponding to the downlink grant signaling, generates hybrid automatic repeat request ACK (HARQ-ACK) bits, performs processing for UCI bits including HARQ-ACK, determines the PUCCH used to transmit the UCI bits in the candidate PUCCH set according to an ARI in the downlink grant signaling, and transmits the UCI bits on the determined PUCCH. The present disclosure further provides an aperiodic channel state information (A-CSI) transmitting method. In this method, a UE receives an uplink grant signaling, determines whether an A-CSI report is triggered according to a CSI request field in the uplink grant signaling, determines a CSI process to be updated after determining that the A-CSI report is triggered, and transmits A-CSI on an uplink component carrier (CC) carrying the A-CSI report.

First claim

What is claimed is:

1 . An uplink control information (UCI) transmitting method, the UCI transmitting method comprising:
receiving, by a user equipment (UE), a configuration signaling, and determining a candidate physical uplink control channel (PUCCH) set corresponding to an acknowledgement (ACK)/negative acknowledgement (NACK) resource indication (ARI); receiving, by the UE, a downlink grant signaling and downlink data corresponding to the downlink grant signaling, and generating hybrid automatic repeat request ACK (HARQ-ACK) bits; performing, by the UE, processing for UCI bits including HARQ-ACK, determining the PUCCH used to transmit the UCI bits in the candidate PUCCH set according to an ARI in the downlink grant signaling, and transmitting the UCI bits on the determined PUCCH.

2 . The method of claim 1 , wherein, when a PUCCH format X is used to transmit the UCI bits, the performing of the processing for the UCI bits and the transmitting of the UCI bits on the PUCCH comprises:
writing the UCI bits after performing encoding, rate matching (RM) and scrambling into a (R mux ×C mux ) matrix, reading the UCI bits out column by column, mapping first C mux,0 columns to a first time slot, mapping last C mux,1 columns to a second time slot, respectively mapping the first C mux,0 columns in the first time slot and the last C mux,1 columns in the second time slot after performing orthogonal cover code (OCC) extension to single-carrier frequency-division multiple access (SCFDMA) symbols, wherein the number of columns of the (R mux ×C mux ) matrix C mux is determined according to the number of the SCFDMA symbols and a length of OCC of the PUCCH format X, the number of rows R mux is determined according to the number of modulation symbols transmission of which is supported by the PUCCH format X and the number of physical bits allowed to be carried by each of the modulation symbols, wherein C mux,0 +C mux,1 =C mux .

3 . The method of claim 1 , wherein, when the UCI bits includes periodic channel state information (P-CSI), the UCI bits including the P-CSI are transmitted on the PUCCH indicated by the ARI.

4 . The method of claim 1 , wherein the determining of the PUCCH according to the ARI comprises:
respectively mapping the ARI and additional control information after processed together to transmission power control (TPC) fields in downlink grant signalings except a TPC field still used for the power control in a downlink grant signaling on a primary cell (Pcell); and determining the PUCCH according to the ARI mapped to the corresponding TPC field.

5 . The method of claim 4 , wherein the mapping of the ARI and the additional control information comprises:
mapping the ARI to TPC fields in first N successive downlink grant signalings transmitted by the base station except the downlink grant signaling including the TPC field still used for the power control on the Pcell; and mapping the additional control information to a TPC field in a remaining downlink grant signaling, wherein N is a integer more than or equal to 4.

6 . The method of claim 5 , wherein the mapping of the additional control information to the TPC field in the remaining downlink grant signaling comprises:
using the TPC field in the remaining downlink grant signaling to carry the total number of currently-scheduled downlink grant signalings; or using the TPC field in the remaining downlink grant signaling to carry the total number of currently-scheduled transport blocks (TBs).

7 . The method of claim 6 , wherein the total number of the currently-scheduled downlink grant signalings or the total number of the currently-scheduled TBs is counted in a time domain, in a frequency domain, or jointly in both the time domain and the frequency domain.

8 . The method of claim 1 , wherein the determining of the PUCCH according to the ARI comprises:
determining the PUCCH according to the ARI, and selecting a PUCCH format according to the number of the UCI bits; or determining a PUCCH format and the PUCCH currently used according to the ARI, wherein PUCCH formats corresponding to different PUCCHs in the candidate PUCCH set is same or different.

9 . An uplink control information (UCI) transmitting apparatus, the UCI transmitting apparatus comprising:
a processor configured to:
receive a configuration signaling, and to determine a candidate PUCCH set corresponding to an acknowledgement (ACK)/negative acknowledgement (NACK) resource indication (ARI),
receive a downlink grant signaling and downlink data corresponding to the downlink grant signaling, and to generate HARQ-ACK bits,
perform processing for the UCI bits including HARQ-ACK, and
determine the PUCCH used to transmit the UCI bits in the candidate PUCCH set according to an ARI in the downlink grant signaling; and
a transceiver configured to transmit the UCI bits on the determined PUCCH.

10 . An aperiodic channel state information (A-CSI) transmitting method, the A-CSI transmitting method comprising:
receiving, by a user equipment (UE), an uplink grant signaling; determining, by the UE, whether an A-CSI report is triggered according to a CSI request field in the uplink grant signaling; after determining that the A-CSI report is triggered, determining, by the UE, a CSI process to be updated, and transmitting A-CSI on an uplink component carrier (CC) carrying the A-CSI report.

11 . The method of claim 10 , wherein the determining of whether the A-CSI report is triggered according to the CSI request field in the uplink grant signaling comprises:
for a CC only configured with downlink transmission, determining, by the UE, whether the A-CSI report is triggered by detecting a downlink control information (DCI) format 0, wherein the CSI request field in the DCI format 0 is used to trigger the A-CSI report of the CC only configured with the downlink transmission.

12 . The method of claim 11 , wherein for the CC only configured with the downlink transmission, when it is determined that the A-CSI report is triggered according to the DCI format 0, the uplink CC carrying the A-CSI report is a primary cell (Pcell), a primary secondary cell (PScell) or an uplink CC indicated by designated bits in the DCI format 0.

13 . The method of claim 11 , wherein for the CC only configured with the downlink transmission,
a CSI process triggered by each value of the CSI request field in the DCI format 0 is independently configured by a high layer signaling; and/or more than 2 bit information in the DCI format 0 is used as the CSI request field; and/or the transmitting of the A-CSI on the uplink CC carrying the A-CSI report comprises:
when uplink data transmission is not scheduled for the UE on the uplink CC carrying the A-CSI report, determining a physical uplink shared channel (PUSCH) parameter of the uplink CC according to the DCI format 0, and transmitting the A-CSI;
when the uplink data transmission is scheduled for the UE on the uplink CC and another A-CSI report is not triggered, determining the PUSCH parameter of the uplink CC according to the uplink grant signaling of the uplink CC, and transmitting the A-CSI; and
when the UE detects the uplink grant signaling on the uplink CC and the uplink grant signaling triggers another A-CSI, only transmitting, by the UE, the A-CSI triggered by the uplink grant signaling, or simultaneously feeding, by the UE, two A-CSI reports back.

14 . The method of claim 10 , wherein the determining of the CSI process to be updated comprises:
when the A-CSI of multiple cell groups (CGs) are triggered in a subframe and the total number of triggered CSI processes N is

Assignees

• Samsung Electronics Co Ltd

Inventors

• Li Yingyang
• Zhang Shichang
• Wang Yi
• Fu Jingxing

Classifications

• H04W72/21

  in the uplink direction of a wireless link, i.e. towards the network · CPC title

• H04W72/10

  Electricity · mapped topic

• H04L5/14

  Two-way operation using the same type of signal, i.e. duplex · CPC title

• H04W88/08

  Access point devices · CPC title

• H04W72/14

  Electricity · mapped topic