METHOD FOR BALANCING THE RATIO EB/I IN A SERVICE MULTIPLEXING CDMA SYSTEM AND TELECOMMUNICATION SYSTEMS USING SAME

• US 20080056203A1
• Filed: 10/30/2007
• Published: 03/06/2008
• Est. Priority Date: 04/21/1999
• Status: Active Grant

• Current Assignee: Mitsubishi Electric Corporation
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: BELAICHE, Vincent
• Granted Patent: US 8,787,179 B2
• Time in Patent Office: Days
• US Class Current: 370/335
• CPC Class Codes: H04J 13/00 Code division multiplex systems for frequency hopping H04B1/713
• CPC Class Codes: H04J 3/22 in which the sources have different rates or codes simultaneous speech and digital data or video transmission H04M11/06; see provisional also H04J3/16
• CPC Class Codes: H04L 1/00 Arrangements for detecting or preventing errors in the information received correcting synchronisation H04L7/00
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 1/0025 Transmission of mode-switching indication
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0067 Rate matching H04L1/0013 and H04L1/08 take precedence
• CPC Class Codes: H04L 1/0068 by puncturing
• CPC Class Codes: H04L 1/0071 Use of interleaving interleaving per se H03M13/27
• CPC Class Codes: H04L 1/0072 Error control for data other than payload data, e.g. control data
• CPC Class Codes: H04L 1/0075 Transmission of coding parameters to receiver H04L1/0023 takes precedence
• CPC Class Codes: H04L 1/08 by repeating transmission, e.g. Verdan system H04L1/1858 and H04L1/189 take precedence
• CPC Class Codes: H04L 5/023 Multiplexing of multicarrier modulation signals multicarrier modulation H04L27/2601

Abstract

A method for configuring a telecommunications system including a plurality of entities communicating data via a plurality of transport channels. The entities include at least one sending entity and receiving entity. The communication includes a plurality of processing procedures specific to the plurality of transport channels. Each processing procedure includes a rate matching step including a transformation of an input block of an initial size into an output block of a final size by puncturing and/or repetition. The method includes transmitting a parameter representative of a maximum puncture rate. The method also includes calculating by the sending entity, for each processing procedure, the final size of the output block as a function of the initial size of the input block based on the parameter transmitted. Some input block bits are punctured or repeated based on a variation between a final size and an initial size in the rate matching step.

Claims

1. A method for configuring a telecommunication system, said telecommunication system comprising a plurality of entities implementing a phase of communicating data conveyed by a plurality of transport channels, said data of said transport channels being multiplexed into at least one multiplexing frame, said data being rate matched by transforming an input data block of an initial size (Xi) into an output data block of a final size (Yi),

characterized in that said method comprises:

a step of determining, by one of said entities, a first parameter (Eq), said first parameter (Eq) being relative to a rate matching ratio (Yi/Xi);

a step of transmitting said first parameter (Eq) from said one of said entities to another of said entities;

a step of receiving, by said another of said entities, said first parameter (Eq) transmitted by said one of said entities; and

a step of calculating, by said another of said entities, said final size (Yi) of said output data block, according to said initial size (Xi) of said input data block, said first parameter (Eq), a second parameter and a maximum payload (N_JSEL) of said multiplexing frame, said second parameter representative of a maximum puncture rate.

2. The method according to claim 1, characterized in that said method is implemented within a telecommunication system implementing a Code Division Multiple Access type technology.

3. The method according to claim 1, characterized in that said method is implemented within an uplink of said telecommunication system.

4. The method according to claim 1, characterized in that said step of calculating said final size of said output data block, for each of said transport channels, comprises in succession:

a first step of calculating a plurality of aggregate sizes, each of said aggregate sizes for a transport channel i being calculated by using the following formula

where;

$Z<br><br>\text{\hspace{1em}<br><br>}<br><br>i=\lfloor <br><br>\frac{\left(\underset{j=1}{\overset{j=i}{\sum <br><br>}}<br><br>\text{\hspace{1em}<br><br>}<br><br>Y_j^{\mathrm{\prime <br><br>}}\right)·<br><br>N}{\underset{j=1}{\overset{j=k}{\sum <br><br>}}<br><br>\text{\hspace{1em}<br><br>}<br><br>Y_j^{\mathrm{\prime <br><br>}}}\rfloor <br><br>$

Z_i is an aggregate size for said transport channel i;

└

X┘

is the largest integer less than or equal to X;

Y′

j is an intermediate size of an output data block for a transport channel j;

N is a maximum payload of said multiplexing frame;

k is a number of said transport channels comprised within a composite of said transport channels; and

a second step of calculating, for said transport channel i, one final size of an output data block, said final size of said output data block being calculated as a difference (Z_i−

Z<sub>i−

1</sub>) of two successive aggregate sizes.

5. A telecommunication system comprising a sending entity and a receiving entity, said sending entity and said receiving entity implementing a phase of communicating data conveyed by a plurality of transport channels, said data of said transport channels being multiplexed into at least one multiplexing frame, said data being rate matched by transforming an input data block of an initial size (Xi) into an output data block of a final size (Yi),

characterized in that said

receiving entity comprises

means for transmitting a first parameter (Eq) to said sending entity, said first parameter (Eq) being relative to a rate matching ratio (Yi/Xi);

and said sending entity comprises;

means for receiving said first parameter (Eq) relative to said rate matching ratio, and

calculating means for calculating said final size (Yi) of said output data block, according to said initial size (Xi) of said input data block, said first parameter (Eq), a second parameter and a maximum payload (N_JSEL) of said multiplexing frame, said second parameter representative of a maximum puncture rate.

6. A base station for communicating, with a mobile station, data conveyed by a plurality of transport channels grouped together within a composite of transport channels, characterized in that said base station comprises:

means for determining, by one of said entities, a first parameter (Eq), said first parameter (Eq) being relative to a rate matching ratio (Yi/Xi) being used by calculating means in said mobile station for calculating said final size (Yi) of said output data block, according to said initial size (Xi) of said input data block, said first parameter (Eq), a second parameter and a maximum payload (N_JSEL) of said multiplexing frame, said second parameter representative of a maximum puncture rate;

rate matching means in said mobile station for transforming an input block of an initial size (Xi) into an output block of a final size (Yi); and

means for transmitting a first parameter (Eq) to said sending entity, said first parameter (Eq) being relative to a rate matching ratio (Yi/Xi).

7. A communication method of base station for communicating, with a mobile station, data conveyed by a plurality of transport channels grouped together within a composite of transport channels,

the communication method comprising the steps of:

determining, by one of said entities, a first parameter (Eq), said first parameter (Eq) being relative to a rate matching ratio (Yi/Xi) being used by calculating means in said mobile station for calculating said final size (Yi) of said output data block, according to said initial size (Xi) of said input data block, said first parameter (Eq), a second parameter and a maximum payload (N_JSEL) of said multiplexing frame, said second parameter representative of a maximum puncture rate;

transforming an input block of an initial size (Xi) into an output block of a final size (Yi); and

transmitting a first parameter (Eq) to said sending entity, said first parameter (Eq) being relative to a rate matching ratio (Yi/Xi).