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Transmission control method for high-speed data service when changing service small zone

A technology for serving cells and high-speed data, applied in transmission control/equalization, digital transmission system, transmission system, etc., can solve the problem of processing delay in downlink transmission of new serving cells, etc., and achieve the effect of reducing transmission delay and improving transmission efficiency.

Inactive Publication Date: 2003-07-09
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main problem of this method is that unsent PDUs must be forwarded by the RNC before they can reach the target serving cell, so the transmission delay of the interface (Iur / Iub interface) between the RNC and the base station and between the RNCs and the RNC's dependence on the mapping information Processing delay will bring obvious lag to the downlink transmission of the new serving cell

Method used

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  • Transmission control method for high-speed data service when changing service small zone
  • Transmission control method for high-speed data service when changing service small zone
  • Transmission control method for high-speed data service when changing service small zone

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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0023] The essence of the present invention is that when HSDPA updates the serving cell, the source serving cell informs the target serving cell of the current physical layer data transmission status through signaling, and the target serving cell obtains the state of the source serving cell and the ACK or ACK fed back by the UE. NACK uplink signaling to process the PDU queue so that the serving cell can be updated in time.

[0024] In the specific data transmission process, the PDU data packet of the radio link control layer (RLC layer) is sent to the MAC layer, and then is split and assembled into TB by the scheduling entity, and then encoded and modulated to the wireless air interface for transmission. After receiving the data, the receiving party undergoes demodulation and decoding, and the TB block is restored, and can judge whether the TB is correct thro...

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Abstract

The transmission control method of high-speed data service when which is changed in service small area includes the following steps: RNC can simultaneously give out PDU data packet to source small area and candidate small area, at the same time of sending TB by source small area, it can notifying the partition scheme of PDU data packet and coding modulation scheme to candidate small area, according to the received partition scheme and coding modulation scheme the candidate small area can make the PDU data packet undergo the process of partition and coding modulation identical to that of source small area, so that the source small area and candidate small area can remain identical PDU data packet and correspondent TB. When the small area is updated, up upgrade in candidate small area is a target service small area, the source small area can be degraded into candidate small area or adjacent small area.

Description

technical field [0001] The invention relates to a high-speed data transmission method in a wireless communication system, in particular to a high-speed data service transmission control method when a serving cell is changed. Background technique [0002] In the wideband code division multiple access (WCDMA) system, in order to enable mobile users to obtain a large number of services such as downloading files as wired Internet users, High Speed ​​Downlink Packet Access (HSDPA, High Speed ​​Downlink Packet Access) is adopted technology, the main channel for data transmission is HS-DSCH (High Speed ​​Downlink Shared Channel, High Speed ​​Downlink Shared Channel). In this channel, frequently transmitted data are Web (web page) browsing, FTP (File Transfer Protocols, file transfer protocol) downloading and other services. Since some services require data transmission to ensure a certain delay quality, reducing the data transmission delay is an important part of ensuring the qual...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04B7/005H04B7/26H04L1/16H04L1/18
Inventor 苏宁张萍池振涛
Owner HUAWEI TECH CO LTD