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Method and apparatus for performing and reporting measurements by user equipment configured with multiple carriers in mobile communication systems

專利號(hào)
US11659497B2
公開(kāi)日期
2023-05-23
申請(qǐng)人
Samsung Electronics Co., Ltd.（KR Suwon-si）
發(fā)明人
Soenghun Kim; Sangbum Kim; Jaehyuk Jang; Kyeongin Jeong
IPC分類
H04W52/36; H04W72/04
技術(shù)領(lǐng)域
ue,scell,enb,pucch,unlicensed,message,band,in,drx,report
地域： Suwon-si

摘要

A communication method and system for supporting a high data transmission rate fuse 5G communication systems with IoT technology to transmit data at a high rate after 4G systems. The method for a terminal in a wireless communication system supporting carrier aggregation includes receiving a control message including indication information, the indication information indicating that physical uplink control channel (PUCCH) feedback for at least one secondary cell (SCell) is transmitted on a SCell; identifying whether the SCell is configured to the terminal and is activated; and if the SCell is configured to the terminal and is activated, obtaining Type 2 power headroom information for the SCell.

說(shuō)明書(shū)

Referring to FIG. 2, in the radio protocol of an LTE system, UE and ENB have Packet Data Convergence Protocol (PDCP) 205 and 240, Radio Link Control (RLC) 210 and 235, and Medium Access Control (MAC) 215 and 230, respectively.

PDCP 205 and 240 perform compression/decompression of Internet Protocol (IP) header. RLC 210 and 235 reconfigure PDCP packet data unit (PDU) in proper size and perform Automatic Repeat reQuest (ARQ).

MAC 215 and 230 connect to a number of RLC layer devices included in one UE device. MAC 215 and 230 multiplex RLC PUDs to MAC PDU and de-multiplex RLC PDUs from MAC PDU. Physical layers (PHY) 220 and 225 channel-code and modulate data from the upper layers, create OFDM symbols, and transmit the symbols via a radio channel. In addition, PHY 220 and 225 demodulate and channel-decode OFDM symbols transmitted via a radio channel, and transfer the symbols to the upper layers.

FIG. 3 is a diagram that describes an intra-ENB carrier aggregation in an LTE system according to various embodiments of the present disclosure.

Referring to FIG. 3, one ENB broadcasts/receives multi-carriers over frequency bands. For example, when an ENB 305 broadcasts a forward carrier 315 of center frequency f1 and a forward carrier 310 of center frequency f3, conventional art allows one UE device to transmit/receive data via one of the two carriers.

權(quán)利要求

1
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