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WO2018109239A1 - Procédé et système pour configurer un bloc à faible bruit (lnb) et bloc lnb configurable - Google Patents

Procédé et système pour configurer un bloc à faible bruit (lnb) et bloc lnb configurable Download PDF

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Publication number
WO2018109239A1
WO2018109239A1 PCT/ES2016/070886 ES2016070886W WO2018109239A1 WO 2018109239 A1 WO2018109239 A1 WO 2018109239A1 ES 2016070886 W ES2016070886 W ES 2016070886W WO 2018109239 A1 WO2018109239 A1 WO 2018109239A1
Authority
WO
WIPO (PCT)
Prior art keywords
lnb
frequency list
television decoders
television
command
Prior art date
Application number
PCT/ES2016/070886
Other languages
English (en)
Spanish (es)
Inventor
Javier IZQUIERDO MARTIN
Luis HIGA SEVILLANO
Jesus INGA MENDOZA
Original Assignee
Telefónica, S.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Telefónica, S.A. filed Critical Telefónica, S.A.
Priority to PCT/ES2016/070886 priority Critical patent/WO2018109239A1/fr
Priority to BR112019012030-0A priority patent/BR112019012030A2/pt
Publication of WO2018109239A1 publication Critical patent/WO2018109239A1/fr
Priority to CONC2019/0005920A priority patent/CO2019005920A2/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H40/00—Arrangements specially adapted for receiving broadcast information
    • H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
    • H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
    • H04H40/90—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for satellite broadcast receiving

Definitions

  • LNB Low Noise Block
  • the present invention generally concerns telecommunication methods and systems.
  • the invention concerns a method and a system for configuring / programming a Low Noise Block (LNB).
  • LNB Low Noise Block
  • the invention also concerns a configurable and / or programmable LNB, remotely.
  • the present invention stems from the need to provide a solution to the lack of scalability of current LNBs, because these, when a modification in their frequency plan occurs due to the demand for more services, have to be modified.
  • the present invention uses DCSS (Digital Communications Satellite Subsystem) technology as a base, which in turn comes from CSS (Channel Stacking Switch) technology.
  • DCSS Digital Communications Satellite Subsystem
  • CSS Channel Stacking Switch
  • This technology allows the radiofrequency switching necessary to develop the proposed invention.
  • these have to be closely related to the operation of the tuners of the television decoders since not everyone has the possibility of communicating in full duplex.
  • the existing limitation in this development is the semi-duplex communication form that does not allow fluid information to be received from the LNB.
  • the present invention provides according to a first aspect a method for configuring a Low Noise Block (LNB), comprising:
  • the descriptor generated to said one or more television decoders, wherein said descriptor includes information about said new frequency list.
  • the method further comprises updating, by said one or more television decoders, once said descriptor has been received, the LNB frequency list with the new frequency list by using a plurality of commands in compliance with a communication protocol , wherein said plurality of commands includes a first command (or start command) sent by said one or more television decoders to the LNB to request the start of the frequency list update; a second command (or command to send information) sent by said one or more television decoders to the LNB comprising the new frequency list; and a third command (or closing command) to update the new frequency list in said one or more television decoders.
  • the first command preferably includes a hexadecimal data field, which represents an information line, intended to indicate that a communication is to be initiated; an identifier of the television decoder; the version number of the frequency list; the number of user bands; and the CRC.
  • the first command is sent by each of said one or more television decoders with a certain delay, while each of the television decoders obtains information on the air, OTA.
  • the second command preferably includes a hexadecimal data field, which represents an information line, intended to send information from said LNB; different data fields to transmit information about the user bands, an input frequency (i.e. the frequency in Ku band for reception), polarization (i.e. the electromagnetic channel in which the information is sent), AGC (automatic control of gain of each user band), an output frequency (that is, the one in the L band and on which its output is designed for optimization) and bandwidth; and the CRC.
  • a hexadecimal data field which represents an information line, intended to send information from said LNB; different data fields to transmit information about the user bands, an input frequency (i.e. the frequency in Ku band for reception), polarization (i.e. the electromagnetic channel in which the information is sent), AGC (automatic control of gain of each user band), an output frequency (that is, the one in the L band and on which its output is designed for optimization) and bandwidth; and the CRC.
  • the present invention provides according to a second and third aspect a system for configuring a LNB and a configurable LNB, remotely.
  • the present invention allows the configuration / programming of an LNB remotely from the digital header (that is, from where the video services are transmitted and the information that is carried in the DVB tables such as the service 3 in the NIT that carries the descriptor with the information to be programmed in the LNB) when this LNB needs to change its frequency plan due to the demand for new services.
  • the present invention allows the different LNBs of a region to be updated by zones, thus controlling the frequency plan according to the needs of each client.
  • the proposed configurable LNBs will preferably have semi-duplex communication for their configuration and will send tones response to confirm, deny and save the commands sent by the television decoders.
  • the present invention also achieves a better ordering of the carriers, in this way satellite spacing is optimized.
  • Fig. 1 is a diagram which schematically illustrates a method for configuring an LNB
  • Figs. 2 to 4 graphically show the process by which television decoders send the first command to begin the process of updating the LNB after receiving the descriptor of the digital header of the LNB.
  • Fig. 1 illustrates the operating flow of a method for configuring a Low Noise Block (LNB) 101, according to an embodiment of the present invention.
  • the method (Part 1) stores a list of frequencies used for communication of the LNB 101 with one or more television decoders 1 10 through one or more transmission lines.
  • the LNB 101 generates (Part 2) a series of parameters for its configuration and a PID / descriptor that is subsequently broadcast (Part 3) to the television decoder (or decoders) 1 10.
  • the television decoder (decoders) 110 transmits (n) through the use of a plurality of commands, preferably three, in compliance with a communication protocol a new list of frequencies to the LNB 101 to establish a new configuration thereof.
  • Part 1 frequency list
  • the LNB 101 has a list of frequencies inside. Also, the LNB 101 is adapted and configured to be updated to a new frequency list according to certain needs (for example due to a change in the video services provided by the LNB). It should be noted that if the LNB 101 could not be updated successfully, the LNB 101 retains its previous frequency list, avoiding signal blockages and interruptions.
  • the LNB 101 has the registered 2LO production frequency list.
  • the LNB 101 After the update, the LNB 101 returns to the 3LO frequency list inside.
  • the transponder to be used from the satellite is decided to provide a specific service.
  • This data will be the input of the LNB 101 that can be in horizontal or vertical band.
  • the number of user bands or UBs to be used is decided, for example "15". This number of user bands must be sent by the television decoder 1 10 in the first command it sends to the LNB 101. The number of user bands will be recognized by the television decoder 1 10 from a file, for example a .bin file.
  • the version number to be modified in the channel map table is also decided.
  • the .bin file that carries the frequency list version, the new frequency list data and a cyclic redundancy code (CRC), preferably 8 bits long, is generated.
  • CRC cyclic redundancy code
  • the channel map file is modified according to the new frequency plan.
  • the polarization input goes to the input port
  • the automatic gain control is set per user band; preferably a maximum gain of 25 should be established.
  • This parameter helps the output in the L band according to the proposed design.
  • the bandwidth is set according to the
  • Part 3 PID dissemination (or descriptor)
  • the .bin file is first placed in a carousel of an MDI communication module generating a PID.
  • the PID it is broadcast on the digital header of the LNB 101 using for example a DSMCC protocol.
  • the television decoder 1 10 recognizes the sent PID.
  • a new type of linkage (0x9A) is created in the CAS part to indicate a new configuration of the LNB 101 available for download. Then the PID is assigned.
  • the PID has the following structure:
  • Part 4 Transmission from the television decoder to the LNB
  • the transmission of the new frequency list to be used by the LNB 101 is performed by using three commands in compliance with a modified DiSEqC communication protocol.
  • a communication protocol that works with 18V modulated pulses so that degradation is prevented in the arrival of the commands.
  • other types of communication protocols could also be used, for example the standard DiSEqC protocol that works with 13V modulated pulses.
  • the first command preferably has the following structure:
  • 40h is a hexadecimal data field intended to indicate that a communication is to be initiated
  • S_ID is an identifier of the television decoder. Preferably it is a random number between 0-255;
  • UB_Config_Versión is the version number of the frequency list. Preferably it is a byte that is set in the channel map table and can be obtained from the .bin file by the television decoder 1 10;
  • Package No. is the number of ODU_UB_Config configuration commands. It can be used to check the number of user bands. Preferably it has a length of 8 bits and its value is between 0 and 31. This number is obtained from the .bin file; Y
  • CRC8 is the code used for such configuration.
  • the aforementioned DiSEqC protocol modified in this case acts as follows. If the CRC8 code is valid and the version is new, an BUSY RF tone is emitted, which will exist until the transmission ends or is aborted. Otherwise, that is, if the CRC8 code is invalid, that is, an old version, or already updated, the BUSY RF tone is deactivated at a frequency of about 950 MHz, and then the communication is aborted.
  • the television decoder 1 10 generates the S_ID in accordance with an identifier number and the LNB 101 registers said number to match the television decoder 110 for the update.
  • the busy tone is not active more than 10 minutes, in case of exceeding this period of time the tone is aborted.
  • the television decoder 110 may have a random delay (0-120 seconds), after sending the request while obtaining OTA information and being asked to start. Also, the television decoder 1 10 can monitor the BUSY RF tone. While maintaining the BUSY RF tone, the television decoder 1 10 does not send any commands and continues to monitor the BUSY RF tone and an RF tone performed at a frequency of 2150 MHz. If the television decoder 1 10 obtains a Negative response or the BUSY tone is not evaluated within 5 seconds after the command sent, the television decoder 110 is assigned a new random delay (0-120 seconds) and then the command is sent again. In the event that the television decoder 110 has tried to send the command for 5 times and could not make the configuration, it is addressed.
  • the digital header of the LNB 101 sends the generated PID with the information for its new configuration to the television decoder (decoders) 110 through a splitter 105 (Fig. 2).
  • the different television decoders 110 have a random delay (0-120 seconds), sending the command while obtaining OTA information.
  • the first television decoder 1 10 sends the ODU_UB_Config_Request configuration request (Fig. 4). If the LNB 101 validates that the CRC8 code is correct and the version is new, the LNB 101 emits the BUSY RF tone. The occupied RF tone will exist until the transmission is finalized or aborted. While this tone is active, the other television decoder 110 listens to ESC_T this busy tone or the performed tone and sends nothing more.
  • ODU_UB_Config (television decoder 110 sends the frequency update to the frequency table):
  • the second command preferably has the following structure:
  • 40h is a hexadecimal data field intended to send information from LNB 101;
  • Data are different data fields to transmit information about user bands, an input frequency, polarization, AGC, an output frequency and bandwidth; Y
  • CRC8 is the code used for configuration.
  • the modified DiSEqC protocol acts as follows.
  • the UB sequence is invalid, it deactivates the BUSY RF tone at the frequency of 950 MHz, and then aborts the communication.
  • the RF TONE PERFORMED is maintained for a period of time (preferably for 1-3 seconds).
  • the RF TONE PERFORMED is maintained for a period of time (preferably for 4-6 seconds).
  • the BUSY RF tone is deactivated and the communication is aborted.
  • ODU_Commit_UB_Config (television decoder 1 10 finishes updating the frequency in the frequency table and modifies the list):
  • the third command preferably has the following structure:
  • 42h is a hexadecimal data field intended to indicate that the update will be performed
  • S_ID is the identifier of the television decoder
  • UB_Config_CRC8 is the version number of the CRC code used for the update. Preferably it comprises 8 bits;
  • UB_Config_Versión is the version number of the frequency list; and CRC8 is the code used for configuration.
  • the modified DiSEqC protocol acts as follows. If SJD / CRC8 is valid, the RF PERFORMED tone is activated for a period of time (preferably for 8-10 seconds) and then the BUSY RF tone is deactivated. Alternatively, if CRC8 / UB_Config_CRC8 are invalid or UB_Config_Version are not equal, the BUSY RF tone is disabled. In the event that two television decoders 110 have the same S_ID identifier, they can return to the new request since UB_Config_CRC8 will be incorrect.
  • each CRC8 code entered at the end of each of the three types of commands is derived from framing the previous byte byte.
  • the code CRC8 is calculated using [0x42, S_ID, UB_Config_CRC8, UB_Config_Version];
  • the CRC8 code is calculated using [0x41, DataO, Datal, Data2, Data3, Data4, Data5]; in UB_Config_CRC8 it is derived with all data Data0-Data5, if the first DataO-Data5 is from UB0, the second is from UB1, etc.
  • UB_Config_CRC8 the CRC8 code can be derived from the last byte of the binary generated by the file kk.bin.
  • the LNB 101 After receiving ODU_Commit_UB_Config and ensuring that everything is correct (CRC8, UB_Config_CRC8 7), the LNB 101 maintains the RF tone made for a period of time (preferably for 8-10 seconds). At the same time, the LNB 101 can register the version in a memory thereof.
  • Examples of embodiment of the present invention also provide a system formed by one or more television decoders 110 and at least one LNB 101 of which new parameters are to be configured.
  • the proposed system is adapted to implement the proposed method according to any of the different embodiments described above.
  • a configurable LNB 101 is also provided, remotely, from the digital header using the modified DiSEqC protocol, or another. So the LNB 101 can be updated by zones, based on a control of the frequency plan according to the needs of the different service customers, for example video services, of an operator.
  • the proposed LNB 101 allows semi-duplex communication and is configured to send response tones to confirm, deny and save the commands sent by the different television decoders 110.
  • the scope of protection of the present invention is defined in the following set of claims. .

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  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Details Of Television Systems (AREA)

Abstract

Selon l'invention, un procédé consiste à stocker une liste de fréquences dans un bloc à faible bruit (LNB) (101) utilisées par le bloc LNB (101) pour communiquer avec un ou plusieurs décodeurs de télévision (110) par le biais d'une ou de plusieurs lignes de transmission ; à générer le bloc LNB (101), une série de paramètres pour sa configuration ; à générer le bloc LNB (101), un descripteur et à le diffuser depuis son en-tête numérique, audit ou auxdits décodeurs de télévision (110), ledit descripteur comprenant des informations proches d'une nouvelle liste de fréquences à utiliser par le bloc LNB (101) ; et à actualiser, au moyen d'un ou de plusieurs décodeurs de télévision (110), une fois reçu le descripteur, la liste de fréquences du bloc LNB (101) avec la nouvelle liste de fréquences par utilisation d'une pluralité de commandes en cours d'exécution avec un protocole de communication.
PCT/ES2016/070886 2016-12-13 2016-12-13 Procédé et système pour configurer un bloc à faible bruit (lnb) et bloc lnb configurable WO2018109239A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/ES2016/070886 WO2018109239A1 (fr) 2016-12-13 2016-12-13 Procédé et système pour configurer un bloc à faible bruit (lnb) et bloc lnb configurable
BR112019012030-0A BR112019012030A2 (pt) 2016-12-13 2016-12-13 método para configurar um bloco de baixo ruído, sistema para configurar um bloco de baixo ruído, e bloco de baixo ruído configurável
CONC2019/0005920A CO2019005920A2 (es) 2016-12-13 2019-06-06 Método y sistema para configurar un bloque de bajo ruido (lnb) y lnb configurable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/ES2016/070886 WO2018109239A1 (fr) 2016-12-13 2016-12-13 Procédé et système pour configurer un bloc à faible bruit (lnb) et bloc lnb configurable

Publications (1)

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WO2018109239A1 true WO2018109239A1 (fr) 2018-06-21

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PCT/ES2016/070886 WO2018109239A1 (fr) 2016-12-13 2016-12-13 Procédé et système pour configurer un bloc à faible bruit (lnb) et bloc lnb configurable

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BR (1) BR112019012030A2 (fr)
CO (1) CO2019005920A2 (fr)
WO (1) WO2018109239A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7130576B1 (en) * 2001-11-07 2006-10-31 Entropic Communications, Inc. Signal selector and combiner for broadband content distribution
US20080016535A1 (en) * 2005-09-02 2008-01-17 The Directv Group, Inc. Frequency shift key control in video delivery systems
US20110016496A1 (en) * 2009-07-20 2011-01-20 Ovidiu Octavian Popa Automatic user band assignment in a satellite signal distribution environment
EP2852078A1 (fr) * 2013-09-24 2015-03-25 EchoStar Technologies L.L.C. Bloc convertisseur à faible bruit (LNB) et procédés de configuration d'un bloc convertisseur à faible bruit
WO2015150422A1 (fr) * 2014-04-01 2015-10-08 Gt-Sat International S.À R.L. Système et procédé de commande d'une unité extérieure connectée à un récepteur-décodeur intégré à l'aide d'un seul câble

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7130576B1 (en) * 2001-11-07 2006-10-31 Entropic Communications, Inc. Signal selector and combiner for broadband content distribution
US20080016535A1 (en) * 2005-09-02 2008-01-17 The Directv Group, Inc. Frequency shift key control in video delivery systems
US20110016496A1 (en) * 2009-07-20 2011-01-20 Ovidiu Octavian Popa Automatic user band assignment in a satellite signal distribution environment
EP2852078A1 (fr) * 2013-09-24 2015-03-25 EchoStar Technologies L.L.C. Bloc convertisseur à faible bruit (LNB) et procédés de configuration d'un bloc convertisseur à faible bruit
WO2015150422A1 (fr) * 2014-04-01 2015-10-08 Gt-Sat International S.À R.L. Système et procédé de commande d'une unité extérieure connectée à un récepteur-décodeur intégré à l'aide d'un seul câble

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Publication number Publication date
CO2019005920A2 (es) 2019-08-30
BR112019012030A2 (pt) 2019-11-12

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