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Method and apparatus for extending coverage in communication system

專利號(hào)
US11611989B2
公開日期
2023-03-21
申請(qǐng)人
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE（KR Daejeon）
發(fā)明人
Cheul Soon Kim; Jae Heung Kim; Sung Hyun Moon; Jung Hoon Lee; Sung Cheol Chang
IPC分類
H04W74/00; H04W74/08; H04W72/14; H04W24/10; H04W72/1268; H04W72/04
技術(shù)領(lǐng)域
pusch,pucch,occasion,may,terminal,ul,be,instance,coherence,in
地域： Daejeon

摘要

An operation method of a terminal in a communication system may comprise receiving first random access (RA) configuration information and second RA configuration information from a base station; transmitting a Msg1 to the base station based on the second RA configuration information; receiving a Msg2, which is a response to the Msg1, from the base station; and repeatedly transmitting a Msg3 K times to the base station.

說明書

Referring to FIG. 23B, the terminal may transmit a PUCCH only in a UL symbol(s). For example, the DM-RS-less PUCCH may include a HARQ-ACK for a PDSCH allocated by RRC signaling (or, PDSCH activated by a DCI). In this case, the terminal may transmit the PUCCH only in a UL symbol(s). The DM-RS-less PUCCH may be transmitted only in a valid symbol(s) (e.g., UL symbol(s)). That is, the PUCCH may be transmitted only in the UL symbol(s). Only two symbols in the PUCCH composed of four symbols may be transmitted.

When the PUCCH is transmitted only in some symbols, code block(s) of the UCI may be mapped regardless of the slot format. Alternatively, the code block(s) of the UCI may be mapped according to the slot format. The difference between Method 3.1-2 and Method 3.1-3 below may be in whether the slot format is applied in the mapping procedure of the code block(s) of the UCI.

Method 3.1-2: When Method 3.1-1 is applied, code block(s) of UCI may be mapped regardless of a slot format, and a PUCCH may be transmitted only in valid symbols.

The terminal may perform a symbol-based puncturing operation in order to transmit a PUCCH (e.g., DM-RS-less PUCCH) only in valid symbol(s) (e.g., UL symbol(s)). Since the PUCCH transmission is performed regardless of the slot format, implementation of the terminal may be simplified.

Method 3.1-3: Code block(s) of UCI, to which Method 3.1-1 is applied, may be mapped only to valid symbols according to a slot format. A PUCCH may be transmitted only in valid symbols.

權(quán)利要求

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