Method and apparatus for controlling uplink control information transmission in wireless communication system providing widebandwidth services via carrier aggregation

A wireless communication system, carrier aggregation technology, applied in the direction of the separation device of the transmission path, wireless communication, error prevention/detection using the return channel, etc., can solve the problem of not making any determination, etc.

Active Publication Date: 2017-11-28
SAMSUNG ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

No determination has been made, and no assertion is made, as to whether any of the foregoing would be applicable as prior art with respect to the present disclosure

Method used

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  • Method and apparatus for controlling uplink control information transmission in wireless communication system providing widebandwidth services via carrier aggregation
  • Method and apparatus for controlling uplink control information transmission in wireless communication system providing widebandwidth services via carrier aggregation
  • Method and apparatus for controlling uplink control information transmission in wireless communication system providing widebandwidth services via carrier aggregation

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Embodiment I

[0079] Hereinafter, preferred embodiments of the present disclosure are described below with reference to the accompanying drawings. Detailed descriptions of well-known functions and structures incorporated herein may be omitted to avoid obscuring the subject matter of the present disclosure. Certain terms can be defined to best describe this disclosure. Therefore, the meanings of specific terms or words used in this specification should not be limited to literal or commonly adopted meanings, but should be interpreted according to the spirit of the present disclosure. In the following description, the ENB is the main agent for allocating resources to the UE, and may be one of eNode B (ENB), Node B, BS, wireless access point, ENB controller, network node, and so on. A terminal may be one of a communication enabled UE, a mobile station (MS), a cellular phone, a smart phone, a computer, a multimedia system, and the like. A downlink (DL) indicates a wireless link through which a...

Embodiment I-1

[0107] Embodiment I-1 proposes a solution for maintaining the reception performance of UCI or PUSCH when UE sends UCI (including HARQ ACK / NACK information or RI information) to ENB in ​​a form of multiplexing with PUSCH.

[0108] refer to Figure 5 A description is given of the main points of Example I-1.

[0109] Figure 5 A method for multiplexing HARQ ACK / NACK and PUSCH by a UE according to Embodiment I-1 of the present disclosure is shown.

[0110] refer to Figure 5 , elements 510, 520, 530, 540, 550, 560, 570, and 580 are equivalent to Figure 4 elements 410, 420, 430, 440, 450, 460, 470, and 480. In Example I-1, compared to Figure 4In the existing scheme described in , in order to obtain additional resources for transmission, regarding UCI multiplexed with PUCSH, SC-FDMA symbol 0, SC-FDMA symbol 6, SC-FDMA symbol 7, and SC - FDMA symbol 13 (590). For example, in Figure 5 , the UE can map HARQ ACK / NACK information not only to SC-FDMA symbol 2, SC-FDMA symbol 4,...

Embodiment I-2

[0118] Embodiment 1-2 proposes a scheme for adjusting PUSCH TBS to maintain the reception performance of UCI or PUSCH when UE sends UCI (including HARQ ACK / NACK information or RI information) to ENB in ​​the form of multiplexing with PUSCH. To determine the size of data to be transmitted via PUSCH (transport block size, TBS), the UE may refer to a TBS table using a TBS index (TBSindex, ITBS) and the number of RBs used for PUSCH transmission (NPRB). The UE can obtain the values ​​of ITBS and NPRB from MCS information and RB allocation information included in the uplink scheduling information notified by the ENB, respectively. Table 2 shows a part of the TBS table.

[0119] 【Table 2】

[0120]

[0121]

[0122] A description is given of the TBS determination scheme in the LTE or LTE-A system with reference to Table 2. For example, assume that the UE knows that the PUSCH is modulated with QPSK, ITBS=9, NPRB=9 based on the uplink scheduling information received from the ENB...

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Abstract

A method whereby a user equipment (UE) transmits hybrid automatic repeat request (HARQ) acknowledgement (ACK) / negative ACK (NACK) information corresponding to downlink data received from a corresponding base station (ENB) in a long term evolution-advanced (LTE-A) system supporting carrier aggregation (CA) is provided. When physical uplink shared channel (PUSCH) transmission is not scheduled at the time of transmission of HARQ ACK / NACK information, the UE transmits HARQ ACK / NACK information via physical uplink control channel (PUCCH). When PUSCH transmission is scheduled, the UE transmits HARQ ACK / NACK information multiplexed with PUSCH to the ENB. The amount of HARQ ACK / NACK information increases in proportion to the number of aggregated carriers. The present disclosure specifies scheduling operation of the ENB and HARQ ACK / NACK mapping of the UE that maintain reception performance of HARQ ACK / NACK and PUSCH when HARQ ACK / NACK information is multiplexed with PUSCH.

Description

technical field [0001] The present disclosure relates to cellular wireless communication systems. More specifically, the present disclosure relates to a method and method for controlling transmission of uplink control information (UCI) of a user equipment (user equipment, UE) in a system that supports carrier aggregation (carrier aggregation, CA). device. Background technique [0002] In contrast to related art wireless communication systems that only provide voice-oriented services, such as high speed packet access (HSPA), long term evolution of the 3rd generation partnership project (3GPP) , LTE) or evolved universal terrestrial radio access (evolved universal terrestrial radio access, E-UTRA) and advanced LTE (LTE-A or E-UTRA evolution), 3GPP2 high rate packet data (high rate packet data, HRPD ) and Ultramobile Broadband (UMB), Institute of Electrical and Electronics Engineers (Institute of Electrical and Electronics Engineers, IEEE) 802.16e advanced wireless communicat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04L5/00
CPCH04L1/1861H04L1/1887H04L1/1896H04L5/0007H04L5/0055H04L5/00H04L5/001H04L5/0057H04L5/0091H04W72/21H04W72/563H04L1/1812
Inventor 金泳范崔承勋郭龙准金东汉金润善
Owner SAMSUNG ELECTRONICS CO LTD
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