US 10,314,016 B2Granted

Method and apparatus for HARQ-ACK transmission in traffic adaptive TDD system

AssigneeSamsung Electronics Co., Ltd.

InventorsJingxing Fu, Chengjun Sun, Yingyang Li

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Abstract

A method and an apparatus are provided for HARQ-ACK feedback information transmission in a traffic adaptive TDD system. The method includes receiving, by a User Equipment (UE), a System Information Block (SIB); obtaining, by the UE, a TDD uplink and downlink configuration that is indicated by current system information and does not support traffic adaptive UE, from the SIB; identifying, by the UE, implicit resources of Physical Uplink Control Channel (PUCCH) based on the TDD uplink and downlink configuration; obtaining, by the UE, a HARQ-ACK timing that supports a traffic adaptive UE; and transmitting, by the UE, the HARQ-ACK feedback information on determined PUCCH resources using a determined PUCCH format, based on the obtained HARQ-ACK timing.

Claims16

Dependent claims

A method for transmitting hybrid automatic repeat request-acknowledgement (HARQ-ACK) information by a user equipment (UE) in a time division duplexing (TDD) system, the method comprising:

receiving control information including a downlink assignment index (DAI) and transmit power control (TPC) information on a downlink (DL) resource based on a TDD uplink (UL) and DL configuration obtained from system information;
determining whether there is a first UL resource related to the DL resource and whether the DAI is equal to a predetermined value, the predetermined value indicating that the TPC information is used as a power control command for transmission of the HARQ-ACK information;
if there is the first UL resource and the DAI is equal to the predetermined value, transmitting the HARQ-ACK information using a first physical uplink control channel (PUCCH) format on the first UL resource, the HARQ-ACK information being transmitted using power controlled based on the TPC information;
if there is not the first UL resource and the DAI is equal to the predetermined value, transmitting the HARQ-ACK information using the first PUCCH format on a second UL resource obtained by a high-layer signaling, the HARQ-ACK information being transmitted using power controlled based on the TPC information;
and
if there is not the first UL resource and the DAI is unequal to the predetermined value, identifying a third UL resource indicated by the TPC information and transmitting the HARQ-ACK information using a second PUCCH format on the third UL resource.

3 more elements

A user equipment (UE) in a time division duplexing (TDD) system, the UE comprising:

a transceiver configured to receive control information including a downlink assignment index (DAI) and transmit power control (TPC) information on a downlink (DL) resource based on a TDD uplink (UL) and DL configuration obtained from system information;
and
a processor configured to:
determine whether there is a first UL resource related to the DL resource and whether the DAI is equal to a predetermined value, the predetermined value indicating that the TPC information is used as a power control command for transmission of hybrid automatic repeat request-acknowledgement (HARQ-ACK) information,
if there is the first UL resource and the DAI is equal to the predetermined value, control the transceiver to transmit the HARQ-ACK information using a first physical uplink control channel (PUCCH) format on the first UL resource, the HARQ-ACK information being transmitted using power controlled based on the TPC information,
if there is not the first UL resource and the DAI is equal to the predetermined value, control the transceiver to transmit the HARQ-ACK information using the first PUCCH format on a second UL resource obtained by a high-layer signaling, the HARQ-ACK information being transmitted using power controlled based on the TPC information, and
if there is not the first UL resource and the DAI is unequal to the predetermined value, identify a third UL resource indicated by the TPC information, and control the transceiver to transmit the HARQ-ACK information using a second PUCCH format on the third UL resource.

4 more elements

A method for receiving hybrid automatic repeat request-acknowledgement (HARQ-ACK) information by a base station (BS) in a time division duplexing (TDD) system, the method comprising:

transmitting, to a user equipment (UE), system information including a TDD uplink (UL) and downlink (DL) configuration;
transmitting, to the UE, control information including a downlink assignment index (DAI) and transmit power control (TPC) information on a DL resource based on the TDD UL and DL configuration;
if there is a first UL resource related to the DL resource and the DAI is equal to the predetermined value, receiving, from the UE, the HARQ-ACK information using a first physical uplink control channel (PUCCH) format on the first UL resource, the HARQ-ACK information being transmitted using power controlled based on the TPC information;
if there is not the first UL resource and the DAI is equal to the predetermined value, receiving, from the UE, the HARQ-ACK information using the first PUCCH format on a second UL resource obtained a high-layer signaling, the HARQ-ACK information being transmitted using power controlled based on the TPC information;
and
if there is not the first UL resource and the DAI is unequal to the predetermined value, receiving, from the UE, the HARQ-ACK information using a second PUCCH format on a third UL resource indicated by the TPC information,
wherein the predetermined value indicates that the TPC information is used as a power control command for transmission of the HARQ-ACK information.

4 more elements

A base station (BS) in a time division duplexing (TDD) system, the BS comprising:

a transceiver;
and
a processor configured to control the transceiver to:
transmit, to a user equipment (UE), system information including a TDD uplink (UL) and downlink (DL) configuration,
transmit, to the UE, the control information including a downlink assignment index (DAI) and transmit power control (TPC) information on a DL resource based on the TDD UL and DL configuration,
if there is a first UL resource related to the DL resource and the DAI is equal to the predetermined value, receive, from the UE, hybrid automatic repeat request-acknowledgement (HARQ-ACK) information using a first physical uplink control channel (PUCCH) format on the first UL resource, the HARQ-ACK information being transmitted using power controlled based on the TPC information,
if there is not the first UL resource and the DAI is equal to the predetermined value, receive, from the UE, the HARQ-ACK information using the first PUCCH format on a second UL resource obtained by a high-layer signaling, the HARQ-ACK information being transmitted using power controlled based on the TPC information, and
if there is not the first UL resource and the DAI is unequal to the predetermined value, receive, from the UE, the HARQ-ACK information using a second PUCCH format on a third UL resource indicated by the TPC information,
wherein the predetermined value indicates that the TPC information is used as a power control command for transmission of the HARQ-ACK information.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/417,294Filed 26 Jul 2013
Priority: CN 2012 1 026204426 Jul 2012
Published: US 2015/0173065 A118 Jun 2015
Granted: 4 Jun 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

H04L 1/1854
Arrangements specially adapted for the receiver end: scheduling and prioritising arrangements
H04W 72/21
Control channels or signalling for resource management: in the uplink direction of a wireless link, i.e. towards the network
H04L 1/1861
Arrangements specially adapted for the receiver end: physical mapping arrangements
H04L 1/1896
Arrangements specially adapted for the transmitter end: aRQ related signaling