What are the specific differences between the parameters of 4G LTE network and 3G?

The whole architecture is completely different.

4G is more flattened, fixed network-core network--enodeb--terminal, the core network is integrated into the fixed network, catering to the concept of IP convergence, enodeb is responsible for the air interface, 3G takes UMTS as an example Fixed network--core network--RNC--nodeb--terminal, and the complexity of more than 1 layer will also increase.

4G broadband, LTE supports 20M bandwidth, simple example, the transportation capacity of rerail is definitely much stronger than that of monorail.

Other OFDM spectrum resource utilization technologies and multi-antenna technologies are not the concept of one or two parameters.

Under normal circumstances, the downlink rate of 3G users is 2Mbps, and the network speed of China Unicom's 4G LTE-FDD can reach up to 150Mbps, and TD-LTE can reach up to 100Mbps. The specific situation shall prevail, such as equipment, local network signal and other conditions will be affected.

The main difference between 4G and 3G is that the supported network standards are different, 4G can use 4G network, backward compatible with 3G and 2G, the network speed is much faster than 3G and 2G, 3G cannot use 4G network, 3G is compatible with 2G, and the network speed is slower than 4G.

What are the specific parameters? The specific difference?

The frame structure is different, the granularity of resource allocation is different, the frequency planning scheme is different, and so on.

1. Different frequency bands: LTE uses the frequency band, while 4G uses the frequency band. 2. The closure rate of the fast pure shirt is different

The maximum transmission rate of LTE can reach 100Mbits, while the maximum transmission rate of 4G can reach 50MbitIt The range of applications is different: LTE technology is mainly used to achieve mobile data transmission, while 4G technology can be used to achieve multiple services, conferences and other applications. 4. Cracks are made with different capacities

Hello dear LTE (Long Term Evolution) and 4G are two different wireless technologies, and there are some significant differences between them. LTE is a high-speed wireless technology that can provide faster data transfer rates than 4G, support more users, higher capacity than 4G, lower latency and higher efficiency. In addition, LTE supports more frequency bands and can provide better coverage.

The main differences between LTE and 4G are data transfer rates, capacity, latency, and coverage. LTE offers faster data rates, higher capacity, lower latency, and wider coverage, making it a more advanced wireless front-alarm technology.

The difference between LTE and 4G: the system is not destroyed, the technology is different, and the implementation standard is not sensitive.

1. The system is different.

LTE belongs to the frequency division duplex LTE system;

4G is a time-division duplex LTE system.

2. The technology is different.

LTE uses air interface uplink and downlink transmission, and a pair of symmetrical frequency bands are used to receive and transmit data.

4G uses uplink and downlink to use the same frequency band to transmit on different time slots.

3. The implementation standards are different.

LTE is jointly developed by the world's major enterprises and operators covered by the 3GPP organization, and the two modes of FDD and TDD in the LTE standard are essentially the same, and there are only minor differences between the two modes, with a similarity of 90%.

The evolution of 4G systems is almost synchronous with the evolution of FDD systems, and the vast majority of enterprises can contribute to LTE standards in the same way as FDD and TD modes.

Encyclopedia-LTE

Encyclopedia - 4g

<>1. Rate: The downlink rate of the 4G network can reach 100Mbps 150Mbps, which is 20 times faster than 3G, and the upload speed can also reach 20Mbps 40Mbps, which can meet the requirements of almost all users for wireless services. Someone once compared the network speed of 3G and 4G in this way, the network speed of 3G is equivalent to "highway", and the network speed of 4G is equivalent to "maglev".

2. Network spectrum: 4G communication can reach 100Mbps 150Mbps transmission, communication operators are based on the 3G communication network, carry out substantial transformation and research, so that the 4G network in the communication bandwidth is much higher than the bandwidth of the cellular system of the 3G network. According to AT&T executives, who study 4G communications, it is estimated that each 4G channel will occupy 100MHz of spectrum, which is equivalent to 20 times that of the W-CDMA3G network.

3. Core construction technology: The core construction technology of 4G and 3G communication is fundamentally different, 3G mobile communication system is mainly based on CDMA as the core technology, and 4G mobile communication system technology is the most concerned with orthogonal multi-task frequency division technology (OFDM), using this technology people can achieve wireless communication such as wireless area loop (WLL), digital audio broadcasting (DAB) and other aspects of wireless communication to increase hunger and allocation services.

4. Cost: When building the 4G communication network system, the communication operators will directly adopt the method of gradual introduction on the infrastructure of the 3G communication network, so as to effectively reduce the cost of operators and users. According to researchers, some services, such as wireless instant connections for 4G communications, will be cheaper than 3G communications.

LTE stands for Long Term Evolution, which means the long-term evolution of general mobile communication technology. The simple understanding is the upgraded version of 3G technology. The technology includes TD-LTE and FDD-LTE, strictly speaking, LTE is only, not up to the 4G standard.

Data expansion: LTE two versions: TD-LTE and LTE FDD.

Both formats are selectively applied based on the previous different G networks. For example, China Mobile uses TD-LTE, and the round limb is because TE-LTE can be well compatible with the 3G network independently developed by China Mobile. China Unicom and China Telecom, on the other hand, may use a combination of the two versions of Answer, or use one or the other.

Reference: LTE Encyclopedia.