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Data transmitting method

A data transmission method and data technology, applied in digital transmission systems, electrical components, error prevention, etc., can solve problems such as not being able to meet business QoS requirements well, increasing data transmission block error rate, and affecting user service experience, etc. Achieve the effect of reducing service transmission delay, improving channel utilization, and ensuring service experience

Active Publication Date: 2010-03-24
HUAWEI TECH CO LTD
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Problems solved by technology

[0011] However, for delay-sensitive services such as conversations, since the RLC non-persistent mode adopted limits the number of retransmissions, if the data transmission coding method is still selected according to the corresponding relationship between the existing channel quality and the coding method, then it is bound to Will increase the block error rate of data transmission (Block ErrorRatio, BLER)
In addition, selecting the encoding method for data transmission according to the corresponding relationship between the existing channel quality and the encoding method may result in multiple retransmissions of data. Since delay-sensitive services such as conversations have relatively high requirements for delay, therefore, Multiple retransmissions will inevitably increase the transmission delay of the service, affect the user's service experience, and cannot well meet the QoS requirements of the service

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Embodiment 1

[0030] The sender corrects the MEAN_BEP and CV_BEP according to the QoS characteristics of the service to be sent, and determines the coding mode of the service data according to the corrected MEAN_BEP and the corrected CV_BEP. For example, set the MEAN_BEP correction amount delta_MEAN_BEP and CV_BEP correction amount delta_CV_BEP according to the QoS requirements of the service to be sent, and use the difference between MEAN_BEP and delta_MEAN_BEP as the corrected MEAN_BEP, and use the difference between CV_BEP and delta_CV_BEP as the corrected CV_BEP.

[0031]For example, the maximum end-to-end delay of game interactive services is 200ms. Assume that the sender obtains MEAN_BEP of 11 and CV_BEP of 4 according to the BEP. According to the corresponding relationship shown in Table 1, MCS-6 should be selected at this time. However, because the service has relatively high requirements on delay, if the MCS-6 coding method is selected at this time, the QoS requirements of the servi...

Embodiment 2

[0036] According to the QoS requirement of the service to be sent, the coding mode obtained through MEAN_BEP and CV_BEP is adjusted, and the adjusted coding mode is used as the coding mode of the service data. For example, for a delay-sensitive service, a coding method whose coding reliability is higher than the coding method obtained through MEAN_BEP and CV_BEP, such as at least one level higher, may be selected as the adjusted coding method. If the coding method obtained through MEAN_BEP and CV_BEP has the highest reliability, the coding method with the highest reliability can be directly used as the adjusted coding method.

[0037] In practical applications, it can be realized by modifying the corresponding relationship between channel quality and coding mode. For example, according to the delay-sensitive characteristics of conversational services, the corresponding relationship between the channel quality and the coding mode shown in Table 1 under the 8PSK modulation mode ...

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Abstract

A method for sending data includes confirming coding mode of service data according to channel quality parameter and QoS character of service to be sent, carrying out coding on data requiring to be sent out according to confirmed coding mode and sending coded data out.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a data sending method. Background technique [0002] With the continuous increase in the bandwidth requirements of new mobile services, the high-speed wireless data technology with high spectral efficiency has increasingly become the focus of attention in the mobile field. Enhanced Data Rate Global System for Mobile communications (EDGE) is an enhanced evolution technology of General Packet Radio Service (GPRS), which evolves the original Base Station Subsystem (BSS) into GSM / EDGE Radio Communication system (UMTS) Terrestrial Radio Access Network (UTRAN) coexists to provide "3G-like" high-speed data services. In areas where 3G spectrum resources are scarce or where economic development is relatively slow, EDGE can be used as a solution for the transition from the second-generation mobile network to the third-generation mobile network. In the future where the second-generation a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04Q7/38
Inventor 陈德张杰柳光翁武林耿风华
Owner HUAWEI TECH CO LTD
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