Wireless data transmission method and device thereof

A wireless data transmission and data block technology, applied in the field of communication, can solve the problems of reducing the payload of RLC data, difficult to implement, and reduce the reliability of coding, and achieve the effect of shortening the transmission period, increasing the data carrying capacity, and ensuring reliability.

Active Publication Date: 2010-05-12
HUAWEI TECH CO LTD
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AI Technical Summary

Problems solved by technology

The defect of this scheme is: when the Bitmap is added between the RLC block header and the data as a separate part, considering that the bits cannot be changed after the RLC data block is coded and punctured, the puncturing algorithm is required to destroy more of the coded data part. redundant bits, thus reducing the coding reliability; if the Bitmap space is obtained by occupying some bits of the RLC data, it will cause the reduction of the RLC data payload, and a new RLC data coding method needs to be defined, resulting in the RLC carrying the Bitmap The incremental redundancy merging (IR: IncrementRedundancy) mechanism between data blocks and RLC data blocks without Bitmap is difficult to implement

Method used

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  • Wireless data transmission method and device thereof
  • Wireless data transmission method and device thereof
  • Wireless data transmission method and device thereof

Examples

Experimental program
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Embodiment 1

[0042] Embodiment 1, a wireless data transmission method, the process is as follows image 3 shown, including:

[0043] A1. Aggregating bursts corresponding to the same two adjacent time slots in two consecutive radio frames into one large burst respectively;

[0044] like Figure 4 As shown, a wireless block under the RTTI technique is composed of four bursts in two consecutive frames, and two adjacent bursts are aggregated into one large burst, that is, a wireless block after aggregation is composed of two large bursts Burst composition. Considering the structural characteristics of existing bursts, the following methods are used to aggregate bursts:

[0045] The TBs at both ends of the separation of the two bursts before the aggregation are reserved as the TBs of the large burst after aggregation, the TBs at the two adjacent ends of the two bursts, and the GBs between the two TBs are aggregated together as Allocatable space; in a large burst, the training sequence of on...

Embodiment 2

[0055] Embodiment 2, a wireless data transmission method, the process is as follows Image 6 As shown, the process of time slot aggregation and data block mapping in this embodiment is the same as that of Embodiment 1, the difference is that the process of putting the Short Bitmap for fast Ack / NAck into the RLC data block to be sent is added, so that Make effective use of the increased data carrying capacity after aggregation. The method of this embodiment includes:

[0056] B1. Aggregating the bursts corresponding to the same two adjacent time slots in two consecutive radio frames into one large burst respectively;

[0057] B2, insert Short Bitmap in the RLC data block to be sent; Figure 7 As shown, such a method is usually adopted: encode the block header and data part of the RLC data block respectively; add TB and check protection code to the Short Bitmap payload, and then encode separately; then the Short Bitmap and the encoded RLC block header and Data is mapped onto ...

Embodiment 3

[0075] Embodiment 3, a wireless data receiving method, such as Figure 11 As shown, this embodiment provides a receiving method corresponding to the data transmission method in the foregoing embodiments 1 and 2, including:

[0076] C1. Continuously receive the same two adjacent time slots in two consecutive radio frames, and obtain a large burst pulse located in the two adjacent time slots; due to the use of time slot aggregation, the aggregated time slots There is no longer GB separation, so when receiving, it is necessary to receive two time slots and two wireless frames continuously to obtain a complete wireless data block;

[0077] C2. Demodulate and decode the two large bursts in the two wireless frames to obtain the data blocks carried in the two large bursts; since the two large bursts form the same wireless block, Therefore, it is generally necessary to demodulate together. In the present invention, the parameters related to decoding in the demodulated data are basica...

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Abstract

This invention discloses a transmitting method for radio data including: carrying out time slot aggregation in RTTI and loading radio data utilizing two burst pulses after the agregation. This invention further provides a method for taking the increased data loading ability by time slot aggregation as the loading of quick response Bitmap, a related receiving method of radio data, a transmitting and a receiving device. This invented method realizes increase of data loading ability of radio blocks and reduction of transmission period.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to the wireless data transmission technology of the air interface. Background technique [0002] At present, the packet data service of the mobile communication network is mainly carried by the General Packet Radio Service (GPRS: General Packet Radio Service) network superimposed on the Global System for Mobile Communications (GSM: Global System for Mobile communications) network. In order to improve packet data transmission capability, GPRS is further developed into Enhanced Data Rates for GSM Evolution (EDGE: Enhanced Data rates for GSM Evolution) technology. Nine modulation and coding schemes (MCS: Modulation and Coding Scheme) are used in EDGE, that is, MCS1~9, among which MCS5~9 adopt 8 phase shift keying (8PSK: 8PhaseShift Keying) modulation method, which can provide three times the modulation and coding scheme used by GPRS. The data rate of the Gaussian Minimum Shift K...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/26H04L12/56H04W76/04H04L1/00H04L47/41
Inventor 王之曦张杰杨建强
Owner HUAWEI TECH CO LTD
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