low-capacity network construction

10, cover,CDMA20001X 800M band, compared to the 900M GSM and GPRS can provide better spatial coverage and depth of coverage, so that when the initial network construction can be achieved wide coverage, low-capacity network construction, to be the number of users developed to a certain size before continuing expansion, enabling operators rolling development of the network construction.11, the frequency resources,The new 800M band occupied by CDMA20001X frequency is rich in resources. The 900M band GSM GPRS is used. Laptop battery GSM frequency resources are inherently lacking in many areas, GPRS is a packet service,

12, the use of soft handoff and softer handoff to improve voice quality and reduce dropped calls,The advanced soft handoff and softer handoff in CDMA20001X, thereby reducing the call drop rate, improve the voice quality. Coupled with state-of-the-art CDMA coding and power control, so that the user's voice quality and clarity, these aspects so that the voice quality of the CDMA and GSM and GPRS are greatly improved compared.HDR RF with identical CDMA 1X/IS-95-, laptop battery so just updated in the original CDMA 1X base station the HDR-channel plate, then the software upgrade.

13, the pseudo-random sequence spread spectrum, increased security,CDMA was originally a military communications standards, gradually moving towards civil innate advantage in confidentiality. Laptop battery state-of-the-art spread spectrum coding and air interface encryption technology to ensure the security of user communication.Second, the transition to 3G contrast,In the wireless access network, GPRS is based on TDMA, if you upgrade to WCDMA or TD-SCDMA, need to re-construction of the base station, only some of the supporting resources, such as power can be reused.power control technology to enhance system capacity.
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