OFDM Symbol Number in A Slot > 자유게시판

Reference indicators such as -particular reference signal (PSS), itagpro locator main synchronization sign (PSS) / secondary synchronization signal (SSS), and control channels similar to bodily downlink control channel (PDCCH) and physical broadcast channel (PBCH) are outlined. This kind of provider is named an extension provider or iTagPro locator a brand new provider type (NCT). An object of the current invention is to provide a channel measuring technique and a system utilizing the identical in a wireless communication system. Another object of the present invention is to provide a way for preventing a collision of a reference sign and an apparatus using the same. RF (radio freqeuncy) unit for transmitting and iTagPro USA receiving a radio signal and a processor connected to the RF unit. RRC layer of the primary cell. FIG. 2 shows an example of a useful resource grid for one downlink slot. 3 shows a structure of a downlink subframe. FIG. 4 is an exemplary diagram illustrating monitoring of a physical downlink management channel (PDCCH). FIG. 5 shows an example wherein a reference sign and a management channel are organized in a downlink subframe of 3GPP LTE.

FIG. 7 reveals an example of a physical resource block (PRB) pair. FIG. 10 exhibits an instance of a subframe construction of a single carrier system and a service aggregation system. FIG. 11 exhibits an example of a subframe construction of a 3GPP LTE-A (superior) system that is cross-service scheduled by means of a service indicator subject. FIG. 13 illustrates a channel measuring method in a wireless communication system based on an embodiment of the current invention. FIG. 14 is a block diagram illustrating a wireless communication system through which an embodiment of the present invention is carried out. CDMA may be carried out by a radio know-how equivalent to universal terrestrial radio access (UTRA) or CDMA2000. TDMA may be applied with wireless technologies akin to international system for itagpro locator cell communications (GSM) / basic packet radio service (GPRS) / enhanced knowledge charges for GSM evolution (EDGE). OFDMA could also be applied by wireless technologies equivalent to Institute of Electrical and Electronics Engineers (IEEE) 802.Eleven (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, evolved UTRA (E-UTRA), and the like.

UTRA is part of a common mobile telecommunications system (UMTS). 3rd generation partnership undertaking (3GPP) long term evolution (LTE) is a part of evolved UMTS (E-UMTS) utilizing evolved-UMTS terrestrial radio access (E-UTRA), which employs OFDMA in downlink and iTagPro locator SC in uplink -FDMA is adopted. LTE-A (superior) is the evolution of 3GPP LTE. It could also be known as different phrases comparable to digital assistant, iTagPro locator wireless modem, handheld machine. NodeB (eNB), a base transceiver system (BTS), an access level (AP), ItagPro and the like. LTE contains LTE and / or ItagPro LTE-A. 1 shows a radio body construction in 3GPP LTE. One subframe includes two consecutive slots. TTI may be referred to as a scheduling unit for iTagPro locator data transmission. One slot features a plurality of orthogonal frequency division multiplexing (OFDM) symbols in the time domain and a plurality of subcarriers within the frequency domain. OFDM image is used to represent one symbol period since 3GPP LTE uses OFDMA in downlink, and iTagPro device could also be called a different name in response to a a number of access scheme.

SC-FDMA when SC-FDMA is used as an uplink a number of entry scheme, the OFDM image could also be known as an SC-FDMA symbol. FIG. 1 is merely an example. Accordingly, the variety of subframes included in the radio frame, the variety of slots included in the subframe, iTagPro portable or the variety of OFDM symbols included in the slot may be variously changed. 3GPP LTE defines that one slot consists of 7 OFDM symbols in a standard cyclic prefix (CP), and one slot includes 6 OFDM symbols in an prolonged CP. FIG. 2 reveals an example of a resource grid for one downlink slot. OFDM symbols in the time domain and consists of N RB RBs within the frequency area. N RB of resource blocks included in the downlink slot depends upon a downlink transmission bandwidth set in a cell. One RB features a plurality of subcarriers in the frequency area. Each element on the resource grid is named a useful resource element (RE).