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Rate matching method and system and its execution device

A rate matching and execution device technology, applied in the field of data transmission, can solve problems such as low spectrum efficiency and coding rate reduction, and achieve the effect of improving performance and spectrum efficiency

Active Publication Date: 2013-01-23
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to meet the quality of service (Quality of Service, QoS) requirements, in the process of transmitting broadcast and multicast services to each adjacent cell, in order to improve the performance of MBMS transmission, in the prior art, the transmission to each adjacent cell MBMS service data encoding blocks include the same systematic bits and redundant information bits, but because the encoding blocks include the same systematic bits and redundant information, the encoding rate will be reduced, resulting in low spectral efficiency

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  • Rate matching method and system and its execution device
  • Rate matching method and system and its execution device
  • Rate matching method and system and its execution device

Examples

Experimental program
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Embodiment 1

[0025] see figure 1 , Embodiment 1 of the present invention provides a kind of rate matching method based on MBMS service, and the specific process of this method is as follows:

[0026] Step 101: separating the input bit sequence into a systematic bit sequence and a check bit sequence;

[0027] Wherein, the system bit series and parity bit sequence include at least one set of systematic bits and at least one set of parity bits;

[0028] Wherein, in this embodiment, the input bit sequence is separated into a group of systematic bits, first parity bits, and second parity bits as an example, and the number of separated systematic bits is denoted as N sys , the number of first parity bits N p1 , the number of second parity bits N p2 ;

[0029] Step 102: Acquire rate matching parameters, wherein the initial variable of rate matching is described with a preset redundancy version corresponding to a specific cell;

[0030] Among them, the rate matching parameters can be obtained...

Embodiment 2

[0066] see figure 2 , Embodiment 2 of the present invention provides an MBMS service-based rate matching execution device, including: a rate matching parameter acquisition unit, and a rate matching processing unit;

[0067] The rate matching parameter acquisition unit 201 is configured to acquire the rate matching parameter, wherein the initial variable of the rate matching is described with a preset redundancy version corresponding to a specific cell;

[0068] Among them, the rate matching parameters can be obtained by the number of system bits and check bits before rate matching and the transmitted system bits and check bits after rate matching, and the formula can be as follows:

[0069] N t,sys =min(N sys ,N data );

[0070]

[0071] Among them, the N t,sys is the number of systematic bits transmitted, N sys is the number of systematic bits before rate matching, N data is the number of available bits of S-CCPCH during one TTI;

[0072] The N t，p1 is the numb...

Embodiment 3

[0099] see image 3 , Embodiment 3 of the present invention provides a rate matching system based on MBMS services, including: a bit separation unit, a rate matching execution device, and a bit merging unit;

[0100] A bit separation unit 301, configured to separate the input bit sequence into systematic bits and parity bits;

[0101] Wherein, said systematic bits and parity bits include at least one set of systematic bits and at least one set of parity bits;

[0102] The rate matching executing means 302 is configured to acquire rate matching parameters, wherein the initial variable of rate matching is described with a preset redundancy version corresponding to a specific cell, and rate matching is performed on the input sequence according to the rate matching parameters;

[0103] Wherein, the rate matching execution device includes: a rate matching parameter acquisition unit, a rate matching processing unit;

[0104] The rate matching parameter acquisition unit 3021 is con...

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Abstract

The invention discloses a speed rate matching method, a system and an executing device, which are applied in MBMS (Multimedia Broadcast and Multicast Service). By utilizing the invention, initial variables in speed rate matching parameters can be described through different foregone redundancy versions of corresponding specific cells, and data information of different redundancy versions can be transmitted in all cells. By utilizing the speed rate matching method, a system and an executing device, the performance and the spectrum effectiveness of the MBMS transmission can be improved.

Description

technical field [0001] The invention relates to data transmission technology, in particular to a rate matching method, system and execution device in data transmission based on multimedia broadcast and multicast services. Background technique [0002] Among various mobile packet services, including video-on-demand, TV broadcasting, online teaching and other services, a main feature is that multiple users who subscribe to the service receive the same data at the same time. In order to realize network resource sharing more effectively, the 3rd Generation Partnership Project (3GPP) introduces Multimedia Broadcast and Multicast Service (MBMS) technology, enabling one data source to send point-to-multipoint data to multiple users at the same time. Due to the large data traffic and long duration of MBMS services, in order to save air interface resources, the general mobile communication system network has introduced three new logical channels supporting point-to-multipoint transmi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/06H04W28/04H04W28/22
Inventor 余荣道刘晟
Owner HUAWEI TECH CO LTD