WO2010004077A1 - Sistema de distribución de señales de banda ancha inalámbricas en interiores - Google Patents
Sistema de distribución de señales de banda ancha inalámbricas en interiores Download PDFInfo
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- WO2010004077A1 WO2010004077A1 PCT/ES2009/070280 ES2009070280W WO2010004077A1 WO 2010004077 A1 WO2010004077 A1 WO 2010004077A1 ES 2009070280 W ES2009070280 W ES 2009070280W WO 2010004077 A1 WO2010004077 A1 WO 2010004077A1
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- radio
- equipment
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- interface
- broadband
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/24—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks using dedicated network management hardware
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/20—Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
- H04W84/045—Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B
Definitions
- the present invention applies to the field of telecommunications and, more specifically, to the construction and deployment of communication networks inside buildings and their connection with other telecommunications networks.
- WiFi wireless IEEE 802.1 1x
- IPTV television over IP protocol
- ADSL router that allows it to communicate with Ia telecommunications network -A wireless signal distribution system in the home based on IEEE 802.1 1x (WiFi) re-routers, which must be configured locally by the user and cannot be remotely monitored from the telecommunications operator's network.
- the equipment is specific to each radio standard and is not updating, so that in the case of improvements to the standard or the appearance of new standards, it is necessary to dispense with the equipment and acquire new ones.
- the provision of the service requires the use of a wired connection.
- a control channel included in the same radio interface is used to perform certain control and supervision operations. Because the spectrum is limited, there is no dedicated air interface, but a control channel included in the same radio interface that is controlled or monitored is used. Maintenance data collection related, for example, with the quality of the radio links (location, received signal level, error transmission rate, etc.) is regulated by specific protocols within the specific GSM / GPRS / UMTS standards, etc.
- European patent application EP161991 1 describes a method of collecting and transmitting maintenance information in mobile communications networks in which, once said information is taken locally in a mobile terminal, this information is transmitted to a server remote that will be in charge of its processing, analysis and, if necessary, correction of some transmission parameter, depending on that processed data.
- the present invention aims to solve the aforementioned problems by means of an indoor radio signal distribution system, ensuring the coverage, supervision and remote configuration of all the equipment used and ensuring the quality of the service, also allowing updates to new standards without the need of changes in equipment.
- an indoor broadband wireless signal distribution system comprising: a radio access node, connected to a telecommunications access network through an access interface, where this Radio access node comprises a broadband signal transmission / reception module configured to transmit and receive wireless broadband signals through a broadband radio interface; and at least one client device comprising a broadband signal transmission / reception module configured to transmit and receive wireless broadband signals to / from said radio access node through said broadband radio interface.
- the system it also comprises a control channel configured to exchange control signals between said radio access node and said at least one client equipment on a radio control interface, each of said radio access node and at least one client equipment comprising a module of transmission / reception of control signals configured to establish said control channel for transmitting and receiving wireless signals on said radio control interface.
- the system further comprises: at least one radio re-router equipment comprising a broadband signal transmission / reception module configured for the transmission / reception of wireless broadband signals and a signal transmission / reception module control configured to transmit and receive wireless signals from a radio control interface; and at least a second client equipment comprising a broadband signal transmission / reception module and a control signal transmission / reception module; where the radio rerouter equipment is configured to receive radio frequency signals from the radio access node through a broadband radio interface, to regenerate said signals and to re-transmit them to said second client equipment through a broadband radio interface, and vice versa and where the control channel is configured to exchange control signals between the radio rerouter equipment and the radio access node and between the radio rerouter equipment and said second client equipment on said radio control interface.
- At least one client device is connected to an end device through an end device interface, said client device being configured to provide the end device with at least one communications service through the end device interface.
- at least one client device comprises a module configured to perform end device functions, where that client device is configured to provide the module with at least one communications service through an internal end device interface.
- the control channel is configured so that a telecommunications operator can communicate with any of the equipment in the system and with any end equipment or sensor or actuator connected to those equipment. of the system, through an access interface connected to a telecommunications access network termination to perform remote tasks of configuration, operation, maintenance, supervision and management of said equipment, regardless of the state in which the radio band interfaces are located corresponding width.
- at least one of those radio access node, client equipment, radio rerouter equipment and said sensor equipment or actuators outside said system is configured to implement radio functionalities upgradeable by software in a distributed manner, being able to update individually its functionalities through changes in its software that allow to support new standards or variations thereof, and said control channel is configured to support said software loads to update the equipment.
- the radio control interface is more robust than the broadband radio interface, using coding techniques to increase the redundancy of the signal and the resistance to errors, implement spectrum management techniques, implement retransmission techniques. signals and uses information interlacing techniques over time.
- the implementation of the radio control interface is based on the physical layer of the IEEE 802.15.4 standard.
- This physical layer of the IEEE 802.15.4 standard is modified by applying the following techniques: coding, spectrum management, signal retransmission and interlacing of information over time.
- At least one of the equipment that forms the system is configured to perform cognitive radio functions to analyze the degree of spectrum occupation and determine the most suitable frequency band and communications standard to support said broadband radio interface.
- At least one of the radio access node, client equipment and / or radio re-routing equipment comprises a base unit and a plurality of insertable modules inserted in the base unit.
- a method of configuring a wireless network formed by a plurality of nodes located inside a building, where a new node is to be connected to said wireless network comprising the steps of: send from the incoming node a broadcast message to the nodes that form the wireless network; send a reply message to the incoming node from all the nodes of the wireless network that have received said broadcast message; perform, by the incoming node, an analysis of the responses received from the nodes that have received the broadcast message and calculate, from at least one parameter, to which of these nodes connect the incoming node; send from that incoming node a connection request to the chosen node; send, from that chosen node, a response message to the incoming node, accepting the connection of the incoming node; notify, by the chosen node to which the incoming
- the incoming node is a client device or a radio rerouter equipment. If the incoming node (1 1 12) is a client computer (1 10, 1 1 1,
- said chosen node is either a radio rerouter equipment or a radio access node, and if said incoming node is a radio rerouter equipment, said chosen node is either another radio rerouter equipment or a radio access node.
- the analysis and calculation of the node to which to connect the incoming node is performed from a weighted function that calculates an optimal channel.
- this weighted function takes into account the quality of the radio link and the distance in levels to the radio access node.
- Figure 1 shows a scheme of the signal distribution system according to an embodiment of the present invention.
- Figure 2 shows a diagram of the node or radio access point according to an embodiment of the present invention.
- FIG. 3 shows an alternative scheme of the radio node or access point according to an embodiment of the present invention.
- Figure 4 shows a diagram of the client or intermediate equipment according to an embodiment of the present invention.
- Figure 5 shows an alternative scheme of the client or intermediate equipment according to an embodiment of the present invention.
- Figure 6 shows an alternative scheme of the client or intermediate equipment according to an embodiment of the present invention.
- Figure 7 shows a diagram of the radio re-router equipment according to an embodiment of the present invention.
- Figure 8 shows an alternative scheme of the radio re-router equipment according to an embodiment of the present invention.
- Figure 9 shows a diagram of the implementation of the radio control interface according to the invention.
- Figure 10 shows the establishment of a control channel according to an embodiment of the invention.
- FIG. 1 illustrates a diagram of a possible embodiment of the wireless broadband signal distribution system 100 of the invention.
- System 100 is specially designed to be used inside buildings and to support multiple radio communication interfaces inside a building.
- System 100 comprises the following elements:
- a radio access point or node also called radio gateway 101.
- this radio access node 101 reside the routing functions between the radio interfaces within a building and the gateway between the wireless network inside the building and a network of access (generally a fixed network, for example copper or fiber optic pair to the home), in addition to the management functions of the wireless network in the building.
- the radio access node 101 comprises a broadband radio transmission / reception module 103 and a radio control transmission / reception module 104.
- System 100 also comprises one or more client or intermediate equipment 1 10 1 1 1.
- Each client or intermediate device 1 1 1 1 10 comprises a broadband radio transmission / reception module 1 13 1 13 'and a control radio transmission / reception module 1 14 1 14'.
- the client or intermediate equipment 1 10 1 1 1 is designed to provide a final equipment interface 120 121 to a respective final equipment 120 121, so that this final equipment 120 121 can support the provision of a certain service.
- These final devices 120 121 are, for example, the consumer electronics equipment of the user.
- these end devices 120 121 be a television set, a digital television decoder, a multimedia hard disk or a DVD player.
- the end equipment interface 130 131 may be an Ethernet interface, an HDMI interface, a USB interface, and so on.
- the system 100 also comprises one or more radio re-routing equipment 180, which are used to extend the radio coverage offered by a radio access point or node 101. These radio re-routing equipment 180 are capable of capturing the radio signals, regenerating them and re-transmitting them in the most suitable radio frequency band and standard.
- each radio re-router equipment 180 comprises a broadband radio transmission / reception module 183 and a radio control transmission / reception module 184. The radio re-router equipment 180 is described below.
- the radio access point or node or radio gateway 101 communicates with the client or intermediate equipment 1 10 1 1 1 and, optionally, with the radio redirector equipment (s) 180, by means of one or more broadband radio interfaces 140 141
- Some examples of these interfaces are: IEEE 802.1 1 (Wi-Fi) type interfaces, in the 2.4 and 5 GHz bands; IEEE 802.16 (WiMax) type interfaces; mobile phone interfaces such as those standardized by 3GPP (UMTS); Ultra Wide Band radio interfaces; and non-standardized interfaces in other frequency bands, such as 60 GHz.
- These broadband radio interfaces 140 141 are used for the distribution of signals and their associated services throughout the building.
- the radio access point or node, gateway or re-routing node 101 communicates with the telecommunications operator's network through an access interface 150, which can be supported by wired or wireless means, such as cable twisted pair, fiber optic cable or radio connection.
- This radio access node 101 is placed in the place inside the building where the termination of the telecommunications access network 170 is available, for example the point where the copper pair or the optical fiber is available.
- the radio node or access point 101 communicates wirelessly with the client or intermediate equipment 1 10 1 1 1 and with radio re-routing equipment 180 by means of broadband radio interfaces 140 141 that support telecommunications services.
- the system 100 has a specific radio interface dedicated to the supervision and configuration of all the equipment in the system.
- This specific interface is designed so that it has greater radio coverage and is more resistant to interference and transmission errors than any of the other interfaces used in the system.
- This specific radio interface ensures the remote monitoring and configuration of the system from the telecommunications operator network 170 in any reasonable situation.
- control radio interface 160 161 allows the implementation of a specific communications channel independent of the radio interfaces used to support services.
- This specific communications channel is called a control channel and is used for the control, configuration and supervision of all the equipment installed in the building.
- the control channel is managed from the radio access point or node 101, so that from the latter it is possible to control the client or intermediate equipment 1 10 1 1 1 and the radio re-routing equipment 180, if any.
- the telecommunications operator can remotely control and monitor the operation of the wireless network in the client's facilities, supported by the client or intermediate equipment 1 10 1 1 1 and the radio re-routing equipment 180, regardless of the state in which the broadband radio interfaces 140 141 used to support the services are located.
- the radio access point or node or radio gateway 101 performs the following functions: transmission and reception functions (Tx / Rx) associated with broadband radio interfaces 140 141, such as functions for detecting and regenerating radio signals from Ia broadband radio interface 140 141 and signal transmission functions to the broadband radio interface 140 141, using at all times the frequency band and the most appropriate standard; transmission and reception functions (Tx / Rx) associated with a radio control interface 160 161, which is described in detail below; signal routing functions between the different broadband radio interfaces 140 141 available in the equipment; gateway functions between the access interface 150 with the operator network (access network 170) and the different broadband radio interfaces 140 141 available in the equipment; cognitive radio functions, by measuring the degree of occupation of different bands of the spectrum; configuration functions of the equipment that make up the system 100, supported by a control channel described below; and identification functions, by means of which the radio access point or node or radio gateway
- the 101 informs the telecommunications operator, through the access network 170, about its characteristics, system equipment that is connected to it, radio technologies and the frequency bands used and the degree of spectrum occupancy.
- FIGS 2 and 3 illustrate possible implementations of the radio access point or node or radio gateway 201 301.
- the radio access node 201 301 comprises: a configuration block 201 1 301 1, responsible for configure the functionality of the radio access node 201 301, such as its IP address, the system equipment that can be connected to it or the services that can be offered; an identification block 2012 3012, responsible for storing information that allows identifying all the equipment that makes up the system; and a cognitive radio block 2013 3013, responsible for analyzing the electromagnetic spectrum and determining its degree of occupancy, by means of measures of radio power detected in each band.
- These modules are accessed through a 2014 3014 gateway with the access and routing network 170.
- Figures 2 and 3 also show the broadband radio transmission / reception modules 203 303 that give access to a broadband radio interface 240 241 340 341 and the control radio transmission / reception modules 204 304 that give access to a radio control interface 260 261 360 361.
- the radio access node may be based on a base unit 302 where the own functions associated with the equipment are performed and several radio insert modules 303 304, which are inserted into the base unit 302 and implement the radio interfaces necessary to communicate the access node radio access 301 with the rest of the equipment that makes up the system.
- each client or intermediate team 1 10 1 1 1 can incorporate some or all of the functionalities of the final equipment 120 121 that it is connected to, integrating both into a single device.
- a non-limiting example of this integration can be a television set (final equipment 120 121) that integrates all the functions of the client or intermediate equipment described in this document.
- the client or intermediate equipment 1 10 1 1 1 communicates with the radio access node 101 via one or more broadband radio interfaces 140 141.
- Some examples of these interfaces are: IEEE 802.1 1 (Wi-Fi) type interfaces, in the 2.4 and 5 GHz bands; IEEE 802.16 (WiMax) type interfaces; mobile phone interfaces such as those standardized by 3GPP (UMTS); Ultra type radio interfaces
- the client or intermediate team 1 10 1 1 1 performs the following functions:
- Tx / Rx -Transmission and reception functions associated with broadband radio interfaces 140 141, such as:
- the equipment can transmit the signal by means of any broadband radio technology standardized by 3GPP (for example 3GPP relay 8 LTE) or IEEE (for example IEEE 802.1 1 N), or by any radio technology of proprietary broadband As for the bands of frequency and to the radio channels within said bands that can be used, the possibility of using any licensed or public use band is contemplated.
- 3GPP for example 3GPP relay 8 LTE
- IEEE for example IEEE 802.1 1 N
- Tx / Rx Transmission and reception functions
- the client device or node 1 10 1 1 1 can perform specific functions of an end device 120 121.
- the client equipment or node 1 10 1 1 1 can include decoding functions of digital television signals, DVB-T or DVB-IP type, delivering the already decoded signals to the television (final equipment 120 121) a through the final equipment interface 130 131; optionally, the client team 1 10 1 1 1 can even perform all the specific functions of an end team, integrating both into a single team;
- the client equipment informs the radio access node 101 or the radio re-router equipment 180 about its characteristics, final equipment 120 121 that are connected to it, radio technologies and frequency bands used, and degree of occupancy of the spectrum
- Figures 4 and 5 illustrate possible implementations of the client equipment or node 410 510.
- the equipment or node 410 510 comprises: a configuration block 4101 5101, responsible for configuring the functionality of the client equipment 410 510 , such as your IP address, the system equipment that can be connected to it or the services that can be offered; an identification block 4102 5102, in charge of storing information that allows the team to identify itself and the final equipment 120 121 that connect to it; and a cognitive radio block 4103 5103, responsible for analyzing the electromagnetic spectrum and determining its degree of occupancy, by means of measurements of radio power detected in each band.
- modules are accessed through a module 4104 5104 which has the function of providing an interface
- the node or client computer 510 may be based on a base unit 512 where the own functions associated with the equipment are performed and several radio insert modules 513 514, which are inserted in the base unit 512 and implement the necessary radio interfaces (broadband radio interfaces 540 and control radio interfaces 560) to communicate the node or client equipment with the radio access node 101 or with a radio rerouter 180.
- Figure 6 illustrates a possible implementation of a client equipment or node 610 based on a base unit 612, comprising several radio insert modules 613 614 (broadband radio transmission / reception module 613 giving access to a broadband radio interface 640 and control radio transmission / reception module 614 which gives access to a radio control interface 660).
- the client node 610 integrates functions of final equipment through a module 620 which can consist, for example, of a television or a multimedia hard drive
- the final equipment interface 625 it is for all intents and purposes identical to the interface 430 530 of the respective figures 4 and 5.
- This final equipment interface 430 530 625 may be, in an illustrative and non-limiting manner, an interface of Type HDMI, Ethernet, USB or any other type.
- FIGS 7 and 8 illustrate possible implementations of the radio re-router equipment 780 880, which is used to extend the radio coverage offered by a radio access point or node 101.
- 780 880 radio rerouter equipment receives 740 745 840 845 broadband radio interfaces from the radio access point or node 101 201 301, from one or more client or intermediate equipment 1 10 1 1 1 1 410 510 610 and / or from other rerouter equipment radio 180 780 880.
- These equipment 780 880 radio routers also receive 760 765 860 865 radio control interfaces from the same equipment.
- Figures 7 and 8 also show the broadband radio transmission / reception modules 783 883 that give access to the corresponding interfaces and the control radio transmission / reception modules 784 884 that give access to the control interfaces.
- the 780 880 radio re-router equipment takes the signals received from the 740 745 840 845 broadband radio interfaces, reconditions and re-transmits them, using the frequency band and the most appropriate radio standard, depending on the radio interfaces available at the point or node radio access 101 201 301 and on client or intermediate equipment 1 10 1 1 1 410 510 610 and the degree of use and interference of the radio spectrum.
- the 780 880 radio re-router equipment performs the following functions:
- Tx / Rx Transmission and transmission functions
- Tx / Rx -Transmission and reception functions associated to the radio control interfaces 760 765 860 865.
- -Routing functions so that a radio signal received by a 740 840 broadband radio interface can be retransmitted again to another 745 845 broadband radio interface using a new radio technology and a new frequency band.
- the radio re-router equipment 780 880 informs the radio access point or node 101 201 301 about its characteristics, system equipment that is connected to it, radio technologies and frequency bands used and degree of occupancy of the spectrum.
- the 180780 880 radio re-router equipment communicates with the radio access point or node 101 201 301 and with the client or intermediate equipment 1 10 1 1 1 410 510 610 via one or more broadband radio interfaces.
- Some examples of these interfaces are: IEEE 802.1 1 (Wi-Fi) type interfaces, in the 2.4 and 5 GHz bands; IEEE 802.16 (WiMax) type interfaces; mobile phone interfaces such as those standardized by 3GPP (UMTS); Ultra Wide Band radio interfaces; non-standardized interfaces in other frequency bands, such as 60 GHz.
- the radio re-router equipment 780 comprises: a configuration block 7801 8801, responsible for configuring the functionality of the re-router equipment 780 880, such as its IP address, the system equipment that they can connect to it or the services that can be offered; an identification block 7802 8802, in charge of storing information that allows the radio re-routing equipment 780 880 to identify itself and the final equipment 120 121 and / or other or other re-routing equipment 180 780 880 that are connected to it; and a radio block Cognitive 7803 8803, responsible for analyzing the electromagnetic spectrum and determining its degree of occupancy, by means of radio power measurements detected in each band.
- the 780 880 radio re-routing equipment comprises 7804 8804 routing modules that give access to the previous modules.
- the radio re-router equipment 880 may be based on a base unit 882 where the own functions associated with the re-router equipment and several radio insert modules 883 884 are performed, which are inserted into the base unit 882 and implement the necessary radio interfaces 840 845 860 865 to communicate the radio re-router equipment 780 with the radio access point or node 101 201 301, with a client or intermediate device 1 10 1 1 1 410 510 610 or with another radio re-router equipment 780 880.
- the insertable modules implement wireless communication interfaces.
- both the radio access point or node 101 201 301, as well as the client or intermediate equipment 1 10 1 1 1 410 510 610 or the radio re-routing equipment 180 780 880 may incorporate insertable modules, preferably of small size, which they implement radio interfaces, so that they are easily updated in a modular way.
- both the radio access point or node 101 201 301, as well as the client or intermediate equipment 1 10 1 1 1 1 410 510 610 or the radio re-routing equipment 180 780 880 can be updated by software updates resident in any of the modules that Io they compose, so that they can work with new versions of a radio communications interface or with new standards. That is, the equipment implements the radio that can be updated using software (Software Defined Radio, SDR).
- SDR Software Defined Radio
- this software upgradeable radio concept is extended in a distributed manner, where each of the 303 304 513 514 613 614 883 884 inserts or the base units 301 510 610 880 have the ability to update their functionalities through changes in their software that allow to support new standards or variations thereof.
- the cognitive radio function consists of a spectral analysis of the radio spectrum (known as
- the implementation is based, without excluding other alternative embodiments, on one or more low noise amplifiers that detect the radio signals, which are converted to intermediate frequency by means of mixers and a tunable local oscillator, so that tuning The frequency of the local oscillator is possible to select different sections of the radiofrequency spectrum detected by the low noise amplifiers. Subsequently, the intermediate frequency signals are filtered by channel band pass filters. Once the intermediate frequency signals are filtered, their power is detected by conventional techniques.
- occupancy levels of the radio channel are established in a heuristic manner depending on the level of power detected, which allows each of the equipment that makes up the system to select the radio interface and the most suitable frequency band.
- control radio interface 160 161 which supports a control channel used for the management of the entire system 100.
- Control radio interface 160 161 is design in a way that maximizes coverage and resistance against errors and propagation problems. This is achieved by a low net data transmission rate, using coding techniques to increase the redundancy of the signal and thereby the resistance to errors.
- spectrum management techniques using at all times the radio channel with less radio occupation and less interference.
- signal retransmission techniques including HARQ (Hybrid Automatic Repeat-Request), in the event that errors in reception are unrecoverable despite the use of coding techniques.
- HARQ Hybrid Automatic Repeat-Request
- it implements information interlacing techniques over time, in order to support the recovery of information in case of signal bursts with errors.
- Radio control interface means the radio interface that serves to communicate pairs of system equipment and that implements layers 1 and 2 of the OSI layer model, while a control channel means a communications channel supported by the interface radio control that implements layer 3 and, if applicable, upper layers of the OSI model.
- this radio control interface is implemented between all the equipment that forms the system 100: between the radio access point or node 101 and the client or intermediate equipment 1 1 1 (radio control interface 161), between the radio access point or node 101 and the radio re-routing equipment 180 (control radio interface 160) and between the radio re-routing equipment 180 and the client or intermediate equipment 1 1 1 (control radio interface 165).
- this radio interface is based on a low transmission speed standard, of the IEEE 802.15.4 type.
- This radio control interface is based on the physical layer (PHY) and the media access control layer (MAC) of the radio interface defined by IEEE 802.15.4 version 2006. Other alternative implementations are also possible.
- the invention provides the following modifications to give the link the desired robustness with a view to improving coverage and resistance to interference:
- WPANs Low-Rate Wireless Personal Area Networks
- this technique is implemented 91 1 after the application of the error correction code 910, to avoid that bursts of errors due to fading of the signal cannot be corrected by the FEC code.
- the bits are introduced by rows in an array of n columns, and once the matrix is completed, the order of the columns is exchanged and the bits are extracted by columns.
- Hybrid automatic repeat-request (HARQ) technique, not contemplated in the standard of the IEEE 802.15.4 radio interface, by means of the realization of identical retransmissions in case a packet recognition is not received received (ACK), and the combination in reception of several packages by means of the combination technique of identical packages or "chase combining", where the so-called soft values or “soft values” (bits or symbols received together with an indication of their quality based on their proximity to the ideal decision point) are stored in the receiver's memory buffer, and combined "soft values” to obtain the most probable logical value of the symbol or bit.
- HARQ Hybrid automatic repeat-request
- this interface allows the remote monitoring and configuration of all the equipment that make up the system 100 from the telecommunications operator network 170, regardless of the availability of the rest of the broadband radio interfaces implemented in the system 100, by means of the transmission of information on the quality of the services supported, the topology and configuration of the system 100, and the broadband radio interfaces 140 145 141 used and the frequency bands in use. That is, this specific radio interface is designed to be available even when the broadband radio interfaces cannot support communication between the equipment that makes up the system, so that remote monitoring of the system from the operator's network can be ensured.
- the radio control interface can be used to communicate any of the equipment that makes up the system 100 (radio access points or nodes 101, radio re-routing equipment 180 and client or intermediate equipment 1 10 1 1 1) with equipment that is not part of said system 100. Specifically, the radio control interface is also used to communicate with sensor and actuator equipment 290 390 490 590 690 790
- the control channel used in system 100 has the following functions:
- the radio control interface is also used to communicate with sensor equipment and actuators, preferably wireless, also preferably of low transmission rate, that implement home automation control applications or environmental intelligence in the building.
- the specific characteristics of the radio control interface are: coverage range equal to or greater than any of the broadband radio interfaces, using the lowest possible frequency band, starting from the free 2.4 GHz band; low net data transmission rate, using coding techniques to increase the redundancy of the signal and thereby the resistance to errors, as explained above; select, in conventional ways, at any time the radio channel with less radio occupation and less interference; as explained above, it implements signal retransmission techniques, preferably of the HARQ type (in English, Hybr ⁇ d Automatic Repeat-Request), in the event that reception errors are unrecoverable despite the use of coding techniques; implements previously mentioned techniques of interlacing information over time, in order to support the recovery of information in case of signal bursts with errors.
- the invention uses them in a low speed channel (control channel) based on the IEEE802.15.4 radio interface.
- control The characteristics and operation of the channel are explained below. control:
- the control channel supported along the sequence of radio access point or node 101, radio re-routing equipment 180 and client equipment 1 10 1 1 1 has a dynamic and configurable tree topology without user intervention.
- the radio access node or equipment 101 is the root node to which the rest of the devices are connected.
- the rerouting equipment 180 if any, is connected at successive levels (i.e., there may be several hierarchies of rerouting equipment 180), the client equipment 1 10 1 1 1 1 being ultimately connected at any level.
- This topology has the specific character of being automatically reconfigurable.
- Figure 10 shows the establishment of the control channel when a new device is part, for the first time, of the system 100.
- the device introduced into the system for the first time is called the incoming node 1 1 12.
- This incoming node 1 1 12 can be either a client or intermediate 1 10 1 1 1 or a re-routing equipment 180.
- the root node 1 101 is called the radio access point or node 101.
- this example illustrates, illustratively, two re-routing equipment 1 180 1280, but the system may have a greater or lesser number thereof.
- the system may have a greater or lesser number thereof.
- the control channel can also be used to control the end devices 120
- the radio access node 101 201 301 has a passive behavior. In case of fall and recovery, it is simply waiting for incoming device requests. After a fall event of the root node or radio access node 101 201 301, the nodes connected in the first level maintain the structure for a pre-established time, after which they send a message of "reset" to its connected nodes in successive levels. As a result of this "reset" message, the rest of the connected nodes restart the discovery process, which is launched when the root node or radio access node 101 201 301 becomes operational again via the radio channel.
- the root node or radio access node 101 201 301 If the root node or radio access node 101 201 301 is recovered before this pre-established time, upon receiving the "keep alive" heartbeat messages from the nodes in the first level, it performs a query process on all the nodes to recover The information of the connected topology.
- the process of configuring the control channel does not require the intervention of the user, since it is limited to powering and switching on the devices starting from the radio access point or node 101, continuing with the radio re-routing equipment 180 and ending with the client or intermediate equipment 1 10 1 1 1.
- This discovery stage includes the sending of an initial broadcast frame (broadcast) by the device being announced (incoming device 1 1 12, that is, device that wants to connect to the home network for the first time). This broadcast frame is sent on each of the control channels.
- incoming device 1 1 12 can be considered both a radio access point or node 101 201 301 and a radio rerouter equipment 180 or a client equipment 1 10.
- Each broadcast frame emitted by an incoming device incorporates a unique identifier, of way that the redirector team (s)
- the radio access point or node 101 201 301 can direct the response to a specific incoming element.
- root node 1 101 all root equipment (radio access point or node 101) and re-routers 180 that have received the broadcast message respond to the incoming node 1 1 12.
- the client or intermediate computers 1 1 1 1 10 do not respond to the broadcast message.
- root node 1 101 and two redirector nodes 1 180 1280 respond to the incoming node 1 1 12 acknowledging receipt of its broadcast message 10-1. It may be the case that, for example, the root node 1 101, due to the remoteness with respect to the incoming node 1 1 12, does not receive the message 10-1.
- the incoming node 1 1 12 analyzes the content of the responses received 10-2 and calculates what the node is (root or router) more favorable to connect.
- a more favorable node means a higher level device that offers better conditions for a given parameter or set of parameters. Examples of possible parameters that can be evaluated are: the radio link of the radio control interface, a value of a weighted function that takes into account the quality of the radio link and the distance in levels to the radio access point or node 101, etc. . This is represented in Figure 10 by reference 10-3.
- This calculation and selection stage is preferably based on a weighted function that provides the optimal channel.
- the redirecting nodes include the distance in levels with the root node and latency measurements.
- the occupation status information of the channels Ia directly obtains the incoming node.
- the incoming node 1 1 12 sends a connection request 10-4, which responds to the incoming node 1 1 12 With an acceptance message.
- node 1 180 to which the incoming node 1 1 12 has been connected notifies the top hierarchy node of the topology change, that is, the incorporation of a new node 1 180 to the system 100.
- Figure 100 illustratively, shows that the hierarchy node higher than the one reported by the redirector 1 180 is the root node 1 101 (radio access point or node), but in the case of a more hierarchical system, it could be another node or redirector team.
- system 100 can have several hierarchies of rerouting equipment 180. Note that the physical channels previously exist, establishing this link between the incoming node and the node to which it is connected (rerouting node or radio access node
- the control channel can respond dynamically to events that affect the topology of the system 100, such as the degradation or improvement of the quality of the links of the radio control interface 160 161 165 and the appearance or disappearance of equipment.
- the quality of the different channels is periodically probed to decide if the discovery process is restarted. For example, when a new device appears (note that the new devices are wireless in connection to the system 100) in the network, it performs the discovery process described above and subscribes to a higher level device. When a team disconnects, the disconnection is discovered by the subordinate teams, if any, that carry out a new discovery process until they subscribe to a new higher level team. Note that disconnection is understood as the absence of response to the "keep alive" heartbeat messages.
- the subordinate teams detect the absence of response to the beats, thus detecting the disconnection.
- the disconnection of a device is also discovered by the higher level teams: Periodically, the root node can send, in turn, echo messages that are answered by its directly connected nodes and indirectly connected (echo messages are retransmitted towards the lower levels).
- topology All these variations of the topology are notified and stored by the radio access point or node 101, which at all times has an updated model of such topology.
- the radio access point or node 101 can issue an order to all the equipment to start the connection process again, to form the optimal topology at that time.
- the modifications in the topology are notified to all the equipment so that they can reevaluate the equipment to which they are connected. If a device does not respond to a higher level message, the device it is connected to stops responding to potential heartbeat messages, which ends up resulting in a restart of the process. discovery.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Small-Scale Networks (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BRPI0915563A BRPI0915563A2 (pt) | 2008-07-09 | 2009-07-08 | sistema de distribuição de sinais de banda sem fio em interiores |
| US13/002,909 US20110158173A1 (en) | 2008-07-09 | 2009-07-09 | System for distributing broadband wireless signals indoors |
| EP09793984.7A EP2337383A4 (en) | 2008-07-09 | 2009-07-09 | SYSTEM FOR DISTRIBUTION OF BROADBAND WIRES LOAD SIGNALS IN CLOSED SPACES |
| MX2011000254A MX2011000254A (es) | 2008-07-09 | 2009-07-09 | Sistema de distribucion de señales de banda ancha inalambricas en interiores. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200802049A ES2369444B1 (es) | 2008-07-09 | 2008-07-09 | Sistema de distribución de señales de banda ancha inalámbricas en interiores. |
| ESP200802049 | 2008-07-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2010004077A1 true WO2010004077A1 (es) | 2010-01-14 |
Family
ID=41506720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/ES2009/070280 Ceased WO2010004077A1 (es) | 2008-07-09 | 2009-07-09 | Sistema de distribución de señales de banda ancha inalámbricas en interiores |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US20110158173A1 (es) |
| EP (1) | EP2337383A4 (es) |
| AR (1) | AR072731A1 (es) |
| BR (1) | BRPI0915563A2 (es) |
| CL (1) | CL2011000037A1 (es) |
| ES (1) | ES2369444B1 (es) |
| MX (1) | MX2011000254A (es) |
| PE (1) | PE20110862A1 (es) |
| SV (1) | SV2011003797A (es) |
| UY (1) | UY31974A (es) |
| WO (1) | WO2010004077A1 (es) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011157731A1 (en) * | 2010-06-15 | 2011-12-22 | Telefonica, S.A. | Hybrid system for distributing broadband wireless signals indoors |
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| EP2365711B1 (de) * | 2010-03-12 | 2016-02-10 | Siemens Aktiengesellschaft | Drahtlosnetzwerk, insbesondere für Automatisierungs-, Echtzeit- und/oder Industrie-Anwendungen |
| US8419547B1 (en) * | 2010-11-04 | 2013-04-16 | Wms Gaming, Inc. | Iterative XOR-matrix forward error correction for gaming |
| US9226230B2 (en) * | 2012-02-23 | 2015-12-29 | Htc Corporation | Handheld device and power saving control method thereof |
| CN104284444B (zh) * | 2013-07-09 | 2019-05-10 | 中兴通讯股份有限公司 | 多频段无线通信通信方法、协调设备以及网络 |
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2008
- 2008-07-09 ES ES200802049A patent/ES2369444B1/es not_active Expired - Fee Related
-
2009
- 2009-07-08 AR ARP090102604A patent/AR072731A1/es not_active Application Discontinuation
- 2009-07-08 UY UY0001031974A patent/UY31974A/es not_active Application Discontinuation
- 2009-07-08 BR BRPI0915563A patent/BRPI0915563A2/pt not_active IP Right Cessation
- 2009-07-09 EP EP09793984.7A patent/EP2337383A4/en not_active Withdrawn
- 2009-07-09 MX MX2011000254A patent/MX2011000254A/es not_active Application Discontinuation
- 2009-07-09 WO PCT/ES2009/070280 patent/WO2010004077A1/es not_active Ceased
- 2009-07-09 PE PE2011000011A patent/PE20110862A1/es not_active Application Discontinuation
- 2009-07-09 US US13/002,909 patent/US20110158173A1/en not_active Abandoned
-
2011
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- 2011-01-07 SV SV2011003797A patent/SV2011003797A/es unknown
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| Publication number | Priority date | Publication date | Assignee | Title |
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| ES2379813A1 (es) * | 2010-06-15 | 2012-05-04 | Telefónica, S.A. | Sistema de distribucion hibrido de señales inalambricas de banda ancha en interiores |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2337383A4 (en) | 2013-10-16 |
| AR072731A1 (es) | 2010-09-15 |
| MX2011000254A (es) | 2011-02-24 |
| EP2337383A1 (en) | 2011-06-22 |
| ES2369444A1 (es) | 2011-11-30 |
| UY31974A (es) | 2010-01-29 |
| PE20110862A1 (es) | 2012-01-11 |
| CL2011000037A1 (es) | 2011-07-08 |
| ES2369444B1 (es) | 2012-10-08 |
| US20110158173A1 (en) | 2011-06-30 |
| BRPI0915563A2 (pt) | 2016-01-26 |
| SV2011003797A (es) | 2011-11-08 |
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