LTE TDD nibbles WiMAX WiMAX Western Hills at dusk

The news on November 30, 2010, will move WiMAX as advanced wireless network communication technology, its era of development seems that has already come too, but another kind of wireless network communication technology, LTE TDD in shortly after future last WiMAX.

It totally accords with the communication and develops logic that the mobile communication network carries out the transition to IP packet transmission communication mode, the price of the transmission route apparatus is relatively low to divide into groups. The newest revolution that series 3GPP are technical, LTE is used particularly in supporting IP transmission network, but the whole IP wireless access capability that WiMAX offers far exceeds LTE and HSPA.

Move WiMAX (IEEE802.16e) It is a kind of TDD/FDD technology, namely: Up run and descenting to share frequency spectrum of a bandwidth, distinguish through mistiming. The result indicates, the telecommunication network adjusts and controls the department and does not need to offer the paired frequency bandwidth for this technology. In addition, the operator can reflect the network and browse through the state by separating transmission time. For example: 10% are used in the upstream access to netwoks, 90% of the download of data used for network of descenting,etc.. In fact, WiMAX is a kind of more flexible network technique. Its transmission rate of network is: 2.3GHz, 2.5GHz, 3.3GHz, 3.5GHz, 5GHz and higher speed.

In the last kilometer of network transmission of network insertion of wireless communication, WiMAX offers for operator and moves network service of broadband with remarkable network technical superiority, in the country not good of network insertion of wireless the last kilometer of copper wires, its advantage is more obvious. The investigation result reveals, moving WiMAX network lays the solid market foundation (see Fig. 1 show) in developing countries . The Network Operators of some network developed countries introduce WiMAX flagship products in its country too, if Clearwire puts out WiMAX network in North America, Yota puts out WiMAX network in Russia.

Fig. 1 Dispose the situation by November of 2010 global WiMAX net region

However, WiMAX can't totally control its market to develop. Though the operator puts out WiMAX network, its TDD frequency spectrum is still limited. So in such fierce market of network of the economic competition, the frequency spectrum of WiMAX is still unable to satisfy majority's demands for wireless communication bandwidth. Once WiMAX network Western Hills at dusk of the scene, will be developed LTE TDD network in full swing at present to ban gradually.

In developing countries, have traditional movement Network Operator on market of WiMAX network while waiting for LTE TDD era to come, also slow down the paces of developing WiMAX network. In addition, such as Russia Yota Company being the same, are putting out WiMAX network constantly before this, develops the focal point of the network service to shift to LTE progressively now. The development prospect of market of WiMAX network of Clearwire Company is still remote, because this company is encountering the turnover question of the fund at present, Clearwire Company taking the strong measure to deal with the present problem now, hopes it can tide over this disturbance steadily, but the store such as battle field, no one is able to guarantee.

LTE TDD, immediately following even catching up with and surpassing WiMAX

LTE TDD technology gets rid of all advantages with WiMAX ' The whole the intersection of IP and communication, flexible to transmit bandwidth, support all kinds of bandwidth frequency) Outside, also have technical superiority of other networks. The more important thing is LTE TDD UMTS and GSM suitable to cut person who take over too. This means LTE will dispose the communication substation of maximum in global mobile communication: Series 3GPP. During the following several years, its ecosystem growth rate of apparatus will be very considerable, advanced the network equipment ' For instance: Intellectual mobile phone and palmtop computer) Price too by a wide margin glide.

In the past two years, LTE has obtained breakthrough development (see Fig. two show) . This with in the past 5 years,compare movement WiMAX network on it is fast growing, development getting more swift and more violent of it. 3 WiMAX networks have already been replaced by LTE. LTE TDD bans several great key elements of WiMAX:

Fig. two Dispose the situation by November of 2010 global LTE net region

1. For the moment, the operator tends either adopts TDD LTE, or adopt FDD LTE. However, every big LTE network frequency spectrum has been auctioned in the activity recently, TDD frequency is: 2.3GHz, FDD frequency is: 2.6GHz. This provides flexible LTE TDD choice for more operators, so applicable become more general.

2. Chip manufacturer, for example: The chip that the high pass introduces supports FDD and TDD frequency spectrum. We expect too this can encourage LTE TDD to compete in the market in the summit, in order to expand the ecosystem of apparatus.

TAG: 3GPP IP iP LTE move Move network Network TDD WiMAX WIMAX WiMax Wimax wimax

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