OFDM Symbol Number In A Slot

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Reference signals equivalent to -specific reference signal (PSS), major synchronization signal (PSS) / secondary synchronization signal (SSS), and control channels reminiscent of bodily downlink control channel (PDCCH) and physical broadcast channel (PBCH) are defined. Such a provider is known as an extension provider or a brand new service kind (NCT). An object of the present invention is to provide a channel measuring technique and a system utilizing the same in a wireless communication system. Another object of the present invention is to supply a method for stopping a collision of a reference sign and an apparatus using the identical. RF (radio freqeuncy) unit for transmitting and receiving a radio signal and a processor connected to the RF unit. RRC layer of the first cell. FIG. 2 shows an example of a resource grid for one downlink slot. Three reveals a structure of a downlink subframe. FIG. 4 is an exemplary diagram illustrating monitoring of a physical downlink control channel (PDCCH). FIG. 5 exhibits an example through which a reference signal and a control channel are arranged in a downlink subframe of 3GPP LTE.



FIG. 7 shows an instance of a physical resource block (PRB) pair. FIG. 10 reveals an example of a subframe structure of a single service system and a provider aggregation system. FIG. 11 exhibits an instance of a subframe construction of a 3GPP LTE-A (superior) system that is cross-provider scheduled via a service indicator discipline. FIG. Thirteen illustrates a channel measuring technique in a wireless communication system in keeping with an embodiment of the present invention. FIG. 14 is a block diagram illustrating a wireless communication system through which an embodiment of the present invention is applied. CDMA could also be applied by a radio expertise corresponding to universal terrestrial radio access (UTRA) or CDMA2000. TDMA could also be applied with wireless technologies equivalent to world system for mobile communications (GSM) / basic packet radio service (GPRS) / enhanced data rates for GSM evolution (EDGE). OFDMA could also be implemented by wireless applied sciences akin to Institute of Electrical and Electronics Engineers (IEEE) 802.Eleven (Wi-Fi), IEEE 802.Sixteen (WiMAX), IEEE 802-20, advanced UTRA (E-UTRA), and the like.



UTRA is a part of a common cellular telecommunications system (UMTS). 3rd era partnership venture (3GPP) long run evolution (LTE) is a part of developed UMTS (E-UMTS) using developed-UMTS terrestrial radio entry (E-UTRA), iTagPro portable which employs OFDMA in downlink and SC in uplink -FDMA is adopted. LTE-A (superior) is the evolution of 3GPP LTE. It may be known as different terms such as digital assistant, wireless modem, handheld system. NodeB (eNB), a base transceiver system (BTS), an access level (AP), and the like. LTE includes LTE and / or iTagPro portable LTE-A. 1 reveals a radio frame construction in 3GPP LTE. One subframe includes two consecutive slots. TTI may be referred to as a scheduling unit for knowledge transmission. One slot features a plurality of orthogonal frequency division multiplexing (OFDM) symbols in the time area and a plurality of subcarriers in the frequency area. OFDM symbol is used to represent one symbol interval since 3GPP LTE makes use of OFDMA in downlink, and may be referred to as a distinct name in keeping with a a number of access scheme.



SC-FDMA when SC-FDMA is used as an uplink a number of entry scheme, the OFDM image may be known as an SC-FDMA symbol. FIG. 1 is merely an instance. Accordingly, the number of subframes included within the radio body, the number of slots included within the subframe, or the number of OFDM symbols included within the slot may be variously changed. 3GPP LTE defines that one slot includes 7 OFDM symbols in a standard cyclic prefix (CP), and one slot includes 6 OFDM symbols in an extended CP. FIG. 2 shows an example of a useful resource grid for one downlink slot. OFDM symbols in the time area and consists of N RB RBs within the frequency domain. N RB of useful 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 domain. Each aspect on the resource grid is known as a resource component (RE).