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Method and system for transferring AMR signaling frames on half-rate channel

A half-rate, channel technology, applied in the field of signaling information transmission, can solve the problems of large storage space, large amount of calculation, consumption, etc.

Inactive Publication Date: 2006-12-06
MICROSOFT TECH LICENSING LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

They are computationally intensive and consume a lot of storage space

Method used

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  • Method and system for transferring AMR signaling frames on half-rate channel
  • Method and system for transferring AMR signaling frames on half-rate channel
  • Method and system for transferring AMR signaling frames on half-rate channel

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Embodiment Construction

[0029] Figure 2A The transmission side of the system of the present invention will be described. Each bit c(i) transmitted from the existing channel encoder block 21 defined for the corresponding GMSK channel is repeated n times in the repetition block 22 so as to correspond to the number of bits carried by one symbol. The value of n depends on the keying algorithm used, for 8-PSK n=3. Then, the n bits {c'((i-1)n+1),...,c'((i-1)n+n)} generated according to c(i) are converted into codes in conversion block 23 Element C(i). The symbols are then interleaved using an interleaver 24 also defined for the corresponding GMSK channel. Importantly, instead of mapping a bit directly to a symbol, it is repeated first, eg, depending on the modulation, there may be a rotation in the constellation each time a bit is marked on a symbol. For example, 8-PSK symbols are continuously rotated by 3π / 8 radians per symbol before pulse shaping.

[0030] From Figure 2B It can be seen that the re...

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Abstract

Transference of signaling frames on GERAN (GSM / EDGE radio Access Network) half rate channels utilizing a modulation scheme carrying n bits in one symbol. In order to be able to utilize the existing channel coding developed for channels with different modulations and to avoid high rate convolutional and block codes, the AMR signaling frame to be transferred is coded using a coding procedure defined for a GSM half rate channel utilizing a GMSK modulation scheme, the coding procedure outputting a coded output stream. In response to said coding, each bit of the coded output stream is repeated n times, whereby a repeated bit stream is obtained, and symbols to be transmitted are formed from the repeated bit stream.

Description

technical field [0001] In general, the present invention relates to the transfer of signaling information. More specifically, the present invention relates to the transfer of signaling frames over GERAN (GSM / EDGE Radio Access Network) half-rate channels utilizing modulation schemes. Background technique [0002] The latest developments in mobile communication technology are increased bandwidth and faster data rates. GSM (Global System for Mobile Communications) is one of the most successful communication technologies of all time. However, the slower transmission speed of GSM has become a bottleneck in establishing better services for the consumer market, and many efforts have been made to develop new technologies for faster mobile communications. One such example is EDGE (Enhanced Data Rates for GSM Evolution). In 1997, the standardization of EDGE was completed in the European Telecommunications Standards Institute. [0003] For the GSM / EDGE Radio Access Network (GERAN),...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L27/32H03M13/35H04L1/08H04L1/12H04L27/12H04L27/20
CPCH04L1/0067H04L27/2017H04L1/0045H04L1/0072H04L2001/125H04L1/0041H04L1/08H04L27/32
Inventor B·塞比雷T·贝利尔
Owner MICROSOFT TECH LICENSING LLC