Method of implementing HSDPA in time division synchronous (CDMA) system

A code division multiple access, time division synchronization technology, applied in time division multiplexing usage, multiplexing communication, electrical components, etc., can solve the problem that it is difficult to directly meet the needs of operators for high-speed packet data services, low downlink peak rates, etc. problem, to achieve the effect of fast and flexible data scheduling, reducing bit error rate, improving downlink peak rate and cell data throughput rate

Inactive Publication Date: 2006-06-28
ZTE CORP
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Problems solved by technology

[0004] For TD-SCDMA, due to the relatively narrowband Time Division Duplex (TDD) mode, the theoretical peak rate on a single carrier can reach 2.8Mbps, which is basically equivalent to the spectral efficiency of HSDPA in th

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  • Method of implementing HSDPA in time division synchronous (CDMA) system
  • Method of implementing HSDPA in time division synchronous (CDMA) system
  • Method of implementing HSDPA in time division synchronous (CDMA) system

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[0033] In order to understand the present invention in depth, the present invention will be described in detail below with reference to the drawings and specific embodiments.

[0034] In the TD-SCDMA mobile communication system, this specific implementation adopts multi-carrier HSDPA technology to meet user requirements for capacity and speed. Compared with single-carrier HSDPA technology, multi-carrier HSDPA technology has the following changes in the physical layer. Physical channel expansion It is three-dimensional, including carrier, time slot and code channel. The mapping from HS-DSCH channel to physical channel adds the mapping to multiple carriers; single carrier HSDPA has specified the code channel for UE to upload HS-SICH in HS-SCCH Therefore, for HS-SCCH, you only need to add carrier configuration information, such as the frequency of multiple carriers, so that the UE can receive HSDPA downlink services on these carriers. If HS-SCCH is not changed, carrier configuration ...

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Abstract

This invention discloses a method for realizing HSDPA in a TDSCDMA system used in a communication system composed of a base station and user terminals, in which, the base station includes a medium access control-high speed down-packet access entities and multiple carriers are used to transmit data between the base station and the user terminals including the following steps: the entity in the base station segments a data block transmitting time intervals into several sub-data blocks to be coded and modulated then to be sent to the user terminals via relevant channels, time slots and carriers, which receive the sub-data blocks and demodulate and decode them and merge all sub-data blocks received in a transmitted time interval.

Description

technical field [0001] The invention relates to the third generation mobile communication field, in particular to a method for realizing HSDPA in a time division synchronous code division multiple access system. Background technique [0002] With the increase of mobile communication multimedia services, the 2Mb / s data transmission rate of the third-generation mobile communication system cannot meet the demand. Therefore, it has become inevitable to develop a mobile communication system with larger capacity and higher bit transmission rate. At present, Wideband Code Division Multiple Access (WCDMA) mobile communication system, CDMA2000 mobile communication system and Time Division Synchronous Code Division Multiple Access (Time Division-Synchronous Code Division Multiple Access, TD-SCDMA) mobile communication system are all in progress Enhanced technology to develop higher service rates and provide more B3G application services. Among them, the main enhanced technologies of ...

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Application Information

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IPC IPC(8): H04L5/26H04J4/00
Inventor 刘虎李颖傅强
Owner ZTE CORP
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