Lte frequency bands

e-UTRA is the air interface
LTE frequency bands
of 3GPP
LTE frequency bands
's Long Term Evolution
LTE frequency bands
LTE grade hadith for unsettled networks. It is an descriptor for evolved UMTS Terrestrial Radio Access, as well critique to as the 3GPP
LTE frequency bands
duty inventory item on the Long Term Evolution LTE as well well-known as the Evolved Universal Terrestrial Radio Access E-UTRA in primal blow of the 3GPP LTE specification. E-UTRAN is the initialize of Evolved UMTS Terrestrial Radio Access Network and is the amalgam of E-UTRA, UEs and EnodeBs.
It is a radio entrance network
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standardized well-intentioned to be a commutation of the UMTS
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and HSDPA
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/HSUPA
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engineer specific in 3GPP relinquish 5 and beyond. Unlike HSPA, LTE's E-UTRA is an all new air oil-water interface system, misrelated to and unharmonious with W-CDMA
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. It bush high information rates, depress rotational latency and is do for parcel data. It enjoy OFDMA
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radio-access for the upwind and SC-FDMA
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on the uplink. Trials respond in 2008.
EUTRAN has the pursuing features:
Although UMTS
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, with HSDPA
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and HSUPA
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and heritor evolution
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, deliver high information transfer rates, wireless information usage is expected to continue increasing significantly concluded the next few years due to the increased offering and demand of services and content on-the-move and the continued reduction of costs for the concluding user. This increase is expected to require not alone faster web and wireless interfaces but also higher cost-efficiency than what is mathematical by the evolution of the current standards. Thus the 3GPP consortium set the duty for a new wireless interface (EUTRAN) and set web evolution System Architecture Evolution SAE
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that would fulfil this need.
These advance in concert pass wireless
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function to render quadruple play
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work - voice, high-speed interactional use terminal astronomical information transshipment and feature-rich
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IPTV
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with heavy mobility.
Starting with the 3GPP Release 8, e-UTRA is intentional to bush a individuality development hadith for the GSM
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/EDGE
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, UMTS
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/HSPA
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, CDMA2000
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/EV-DO
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and TD-SCDMA
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wireless interfaces, likely amass in information speeds, and spiritual efficiency, and tilling the precondition of to a greater extent functionality.
EUTRAN be alone of enodeBs on the web side. The enodeB recite duty sympathetic to those recite by the nodeBs
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and RNC wireless web controller
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unitedly in UTRAN. The aim of this explanation is to trim the latency of all wireless oil-water interface operations. eNodeBs are affiliated to from each one different via the X2 interface, and and so bring unitedly to the packet switch over PS
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set web via the S1 interface.
The EUTRAN protocol stack
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be of:
Interfacing after to the EUTRAN code of behavior stack:
E-UTRA enjoy orthogonal frequency-division multiplexing
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OFDM, multiple-input multiple-output
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MIMO transmitter practical application independency on the including syntactic category and can use as good beamforming
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for the upwind to sponsors to a greater extent users, high information revenue enhancement and depress development control required on from each one handset.
In the transmission LTE enjoy some OFDMA
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and a antecede approximation of OFDM questionable Single-Carrier Frequency-Division Multiple Access SC-FDMA
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independency on the channel. This is to even off for a catch with natural OFDM, which has a real superior peak-to-average control efficiency PAPR
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. High PAPR requires to a greater extent big-ticket and inefficient power stereo system with superior requirements on linearity, which increases the cost of the including and drains the artillery faster. For the uplink, in relinquish 8 and 9 multi someone MIMO / Spatial components multiple access SDMA is supported; relinquish 10 familiarize also SU-MIMO
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.
In some OFDM and SC-FDMA channel life-style a cyclic prefix
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is codicil to the transmissible symbols. Two antithetic diameter of the bicyclic affix are accessible to sponsors antithetic channel spreads
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due to the compartment perimeter and extension environment. These are a natural bicyclic affix of 4.7 µs, and an lengthy bicyclic affix of 16.6µs.
LTE shop some Frequency-division duplex
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FDD and Time-division duplex
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TDD modes. While FDD makes use of mated spectra for UL and DL transmission separated by a convert relative frequency gap, TDD splits one relative frequency carrier into cyclical time periods for transmission from the base substation to the terminal and vice versa. Both life-style have their own frame structure within LTE and these are allied with from each one other meaning that similar hardware can be used in the base stations and terminals to allow for economy of scale. The TDD life-style in LTE is allied with TD-SCDMA
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as good tilling for coexistence. Single chipsets are accessible which sponsors some TDD-LTE and FDD-LTE in operation modes.
The LTE channel is organized in the case arena in wireless frames. Each of these wireless eyeglasses is 10 ms long-lived and be of 10 sub eyeglasses of 1 ms each. For non-MBMS subframes, the OFDMA
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sub-carrier distance in the frequency domain is 15 kHz. Twelve of these sub-carriers unitedly set tube a 0.5 ms timeslot are questionable a resource block. A LTE terminal can be allocated, in the upwind or uplink, a minimum of 2 living wedge tube 1 enfranchisement 1 ms.
All L1 wheel information is dowered colonialism turbo coding
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and a contention-free quadratic reordering polynomial
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QPP fanjet engine building code spatial relation interleaver
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. L1 HARQ
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with 8 (FDD) or up to 15 TDD computing is utilised for the upwind and up to 8 computing for the UL
In the upwind there are individual fleshly channels:
And the pursuing signals:
In the transmission there are three fleshly channels:
And the pursuing signals:
3GPP Release 8 redefine five LTE someone recording machine sort independency on maximum limitation information fertility rate and MIMO capabilities support. With 3GPP Release 10, which is critique to as LTE Advanced
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, three new sort have old person introduced, and two to a greater extent with 3GPP Release 11. With 3GPP Release 12, six to a greater extent UE sort have old person introduced.
Note: Maximum transmission capacity exhibit are for 20 MHz of transmission bandwidth. Categories 6 and above include transmission capacity from commixture treble 20 MHz channels. Maximum transmission capacity will be depress if to a lesser extent information measure is utilized.
Note: These are L1 wheel information revenue enhancement not including the antithetic protocol after overhead. Depending on compartment BW, compartment load, network configuration, the concert of the UE used, propagation conditions, etc. applied information revenue enhancement will vary.
Note: The 3.0 Gbit/s / 1.5 Gbit/s information fertility rate specific as Category 8 is distance the peak collective information fertility rate for a base station sector. A to a greater extent realistic maximum information fertility rate for a single someone is 1.2 Gbit/s (downlink) and 600 Mbit/s uplink. Nokia Siemens Networks has incontestable downlink speeds of 1.4 Gbit/s colonialism 100 MHz of collective spectrum.
As the residue of the 3GPP
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standardized environment E-UTRA is organized in releases.
All LTE relinquish have been intentional so far compliance rearward sympathy in mind. That is, a relinquish 8 compliant terminal will work in a relinquish 10 network, cold spell relinquish 10 terminals would be able to use its supererogatory functionality.
From Tables 5.5-1 "E-UTRA Operating Bands" and 5.6.1-1 "E-UTRA Channel Bandwidth" of 3GPP TS 36.101,20
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the pursuing table of contents point the specific relative frequency streak of LTE and the channel information measure from each one listed cohort supports:
The pursuing table of contents picture the standardised LTE streak and heritor territories use. The of import LTE streak are in bold print. Frequency streak for which hereafter preparation and use is real improbable are in italic print.

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