EP3871338A1 - Station de base radio pour la communication radio combinée - Google Patents

Station de base radio pour la communication radio combinée

Info

Publication number
EP3871338A1
EP3871338A1 EP18796875.5A EP18796875A EP3871338A1 EP 3871338 A1 EP3871338 A1 EP 3871338A1 EP 18796875 A EP18796875 A EP 18796875A EP 3871338 A1 EP3871338 A1 EP 3871338A1
Authority
EP
European Patent Office
Prior art keywords
radio
activities
esl
time
control stage
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP18796875.5A
Other languages
German (de)
English (en)
Inventor
Andreas RÖßL
Andreas HECHENBLAICKNER
Danijel MOM
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vusiongroup GmbH
Original Assignee
SES Imagotag GmbH
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 SES Imagotag GmbH filed Critical SES Imagotag GmbH
Publication of EP3871338A1 publication Critical patent/EP3871338A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/12—Synchronisation between the display unit and other units, e.g. other display units, video-disc players
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/04—Scheduled access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/16—Use of wireless transmission of display information
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2380/00—Specific applications
    • G09G2380/04—Electronic labels
    • 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]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H04W88/10—Access point devices adapted for operation in multiple networks, e.g. multi-mode access points

Definitions

  • Radio base station for combined radio communication
  • the invention relates to a radio base station for combined radio communication.
  • the invention further relates to a system with said radio base station.
  • a radio base station mentioned at the beginning also called radio access point or simply called access point) for combined WLAN and ESL
  • the known radio base station has a separate WLAN radio module for WLAN communication and a separate ESL radio module for ESL communication.
  • the two radio modules are connected to a control line. With the help of the control line, a radio module can
  • the object of the invention is to provide an improved radio base station.
  • the object of the invention is therefore a radio base station
  • the radio base station has a first, in particular software-based, control stage for controlling the radio communication of the first radio module in accordance with a first communication protocol, and a second, in particular software-based, control stage for controlling the radio communication of the ESL radio module which can be connected to the connection in accordance with a second Communication protocol, and a, in particular software-based, third control stage for
  • the object is further achieved by a system according to claim 10.
  • the subject of the invention is therefore also a system having a radio base station according to the invention and an ESL radio module connected to the connection.
  • the object is further achieved by a method according to claim 12.
  • the object of the invention is therefore a method for controlling radio communication of a radio base station, the radio base station having a first radio module for radio communication with first radio communication devices and a connection for connecting one
  • ESL radio module for radio communication with electronic display signs, wherein according to the method, a first, in particular software-based, control stage controls the radio communication of the first radio module in accordance with a first communication protocol, and a second, in particular
  • Communication protocol controls, and a third, in particular software-based, control stage looks ahead and changes a temporal sequence of radio activities of the first radio module defined for a future time period depending on radio activities of the ESL radio module defined for said future time period.
  • Time span over a time sequence of planned radio activities Decisions regarding the availability of the respective radio activities can be made. This corresponds to a forward-looking planning or coordination of the time ranges available for the first radio module within the future time period, around the radio activities of the first radio module within the future time period in a selection of free time ranges
  • a future time period generally extends after the radio activity currently taking place, in particular with respect to the radio activity of the ESL radio module currently taking place, wherein it covers a number of several radio activities in terms of time.
  • Radio activities are understood to mean both transmit and receive radio activities.
  • the first radio module can fundamentally support any radio standard that differs from the ESL radio module. So z. B.
  • the invention finds its particularly preferred use in a configuration of the radio base station in which the first radio module is WLAN-capable - here WLAN stands for "Wireless Local Area Network” - or is Wi-Fi certified (eg IEEE-802.11). The same applies to the first radio communication devices
  • Radio modules cause hardly predictable radio traffic, the influence of which on time-critical radio activities of the ESL radio module can be serious if the measures according to the invention are not used.
  • ESL radio module is a radio module designed to communicate with electronic display signs, in particular price and or product information display signs.
  • electronic display signs are referred to in technical jargon as "Electronic Shelf Label” and abbreviated to ESL.
  • connection can be any connection designed for parallel or serial data transmission.
  • the design of the connection can relate to both the electromechanical connections and possibly also electronic (circuit) components or protocol aspects.
  • connection can be made according to the specification of a
  • connection can be a proprietary connector that is used for
  • Earth communication is used. It can also be one
  • USB connection can be available in various versions (USB 1, 2, 3) or designs (such as Micro, Mini etc. or also Type-C).
  • the ESL can be connected to the USB connection
  • the module can be connected outside the device housing of the radio base station or can also be housed inside the device housing, In particular when both radio modules are housed in a single device housing, the (at least two) two antennas of the two radio modules are attached to the device housing relatively close to one another. However, this can also be the case with an ESL radio module located outside the device housing of the radio base station.
  • the aforementioned electronic display signs can be used for their energy supply, an energy storage device, e.g. have a battery or a solar panel coupled with a rechargeable battery (or accumulator).
  • a display unit of such display signs can e.g. using LCD technology, but preferably using electronic ink technology (also known as e-ink as a synonym for electronic paper).
  • a display sign In an active state, a display sign has a relatively high energy consumption.
  • the active state is e.g. in the case of transmitting radio activities for transmitting data or receiving radio activities for receiving data, in the internal processing of received data, for example when updating the content of the display (the so-called display update) or also when measuring battery voltage etc.
  • a sleeping state In a sleeping state there is a relatively low one
  • the active state is predominantly in that determined for the display plate for communication with the ESL radio module
  • the display sign shows a
  • the basic operating strategy is to keep the display sign asleep for as long as possible and only then, if absolutely necessary, for data transmission with the ESL radio module or to determine the synchronism for as short a time as possible in the active Condition to operate.
  • the invention now enables, for the first time within a defined future time period, the anticipatory preference for the ESL radio module used for communication with the electronic display signs and consequently the reliable predictive avoidance of interference with radio communication with the
  • the measures according to the invention ensure planning or coordination of the future use of the common radio medium, care being taken to ensure that only mutually compatible radio activities of the two radio modules are present which do not lead to any mutual negative influence.
  • a simultaneous simultaneous use of the radio medium is given, for example, if both radio modules simultaneously receive radio activity have, but this in different radio channels.
  • the future planning of the use of the radio medium will typically always have an exclusive use of the radio medium due to the radio activity of one or the other radio module. This is important because the two radio antennas of the two radio modules are positioned relatively close to one another and therefore a negative mutual influence is always to be expected if both radio modules are used simultaneously
  • Radio modules use different radio channels.
  • both radio communications are carried out in the same frequency band, e.g. B. in the 2.4 GHz frequency band.
  • a frequency band e.g. B. in the 2.4 GHz frequency band.
  • the WLAN has a channel width of 20 MHz
  • the ESL radio system has only 1 MHz channel width
  • Base station especially the ESL radio module
  • Transmit radio activity but especially on those signals sent by the ESL itself that are expected from the ESL radio module at fixed time windows. It can e.g. are confirmation data or partial confirmation data that are generated by the ESL as a result of the execution of the commands previously received from the ESL radio module. In this case, transmission radio activities of the first radio module can even occur simultaneously with these ESL radio module reception radio activities.
  • a second communication protocol different from the first communication protocol is used for the communication with the electronic display signs.
  • it is a proprietary
  • Time slot communication methods can be customized electronic
  • Display signs are addressed and / or supplied with (command or display) data, and data are also received from the display signs.
  • time slots for example 256 time slots
  • n seconds form a time slot cycle that is repeated continuously.
  • time slot communication method there are m
  • Time slots are available within a time slot cycle for communication with the display signs.
  • Each of the display signs can be assigned to one of the time slots, and a plurality of electronic display signs can also be assigned to a specific time slot.
  • time slot cycle 15 seconds there are 256 time slots of 58.5 milliseconds each, two to five display tags per time slot can be easily addressed and individual tasks delegated to them with one command.
  • Any electronic display sign can complete the process
  • the ESL radio module is designed to transmit a synchronization data signal having the time slot symbol for the currently available time slot, preferably at the beginning of each time slot.
  • Time control level of the electronic display plate only through those activities that are necessary for the timing to wake up in time so that the
  • Each display plate knows which time slot symbol indicates the time slot intended for it.
  • Each display sign is based on the appearance of something relevant to it
  • Timeslot symbol identifies the timeslot symbol relevant to him and defines his next wake-up time with the timing of the timeslot communication method specified by the radio base station.
  • the display plate thus determines its synchronism with the ESL radio module solely by the fact that the time slot symbol is recognized, which occurs at the point in time expected in it or in an expected time window, and that time slot intended for him.
  • a time slot symbol can be given, for example, by the least significant byte of the individual and unique device address on the display label. Insofar as there is no individual addressing for the display plate which determines its synchronism, it immediately changes back to the one after recognition of its synchronism
  • a synchronous display plate is therefore operated as long as possible in its sleep state with the lowest possible energy consumption in order to extend the battery life as long as possible.
  • the electronic display plate would assume a state of increased energy consumption in order to bring about an automatic, in particular autonomous (without bi-directional communication with the radio base station), re-synchronization.
  • the second is preferably used in the ESL radio module
  • the future time period to be taken into account had a duration of 0.5-15 seconds.
  • the future preferably shows
  • Time span however a duration of approx. 0.5 - 3, in particular 0.75 - 1.5,
  • the above-mentioned exemplary time values contribute to a good balance between a stable ESL radio system, in which the synchronism in the respective display signs can be reliably determined, and sufficient flexibility for the consideration of radio activities to be carried out over time, without doing so to cause unnecessarily high processing or planning effort for the future period.
  • This also leads to a long-term view, i.e. via the z. B. total operating time of the ESL radio system, to an energy-optimized operating scenario.
  • the radio base station has an electronic circuit, said USB connection and a programmable circuit component for processing software, with the aid of which said first control stage and / or said second control stage and / or said third control stage is implemented, on.
  • Control stages can be achieved by (e.g. also exclusively) hardware components of the circuit.
  • ASIC Application Specific Integrated Circuit
  • a single chip processor or a microprocessor with its typical peripheral components input / output, memory components etc.
  • the first control stage is e.g. B. a WiFi device driver (WiFi device driver) for controlling the first radio module, which is implemented in this case as a WiFi radio module, and for the ESL control stage by an ESL device driver (ESL device driver) Control of the ESL radio module, which is connected to the electronic circuit via said USB connection.
  • WiFi device driver WiFi device driver
  • ESL device driver ESL device driver
  • the third control stage can be called or implemented as a software-based radio coordinator, because this software plans or coordinates, which radio activities should take place within which time ranges within the future time period. It can be part of the software of the
  • Device driver be designed for the first or for the second radio module or are also present and executed as a separate software component.
  • the radio base station can have a storage stage for storing a first queue data structure representing the future chronological sequence of radio activities of the first radio module and a second queue data structure representing the future chronological sequence of radio activities of the ESL radio module.
  • These queue data structures are in the
  • the third control stage for predictively changing the temporal sequence of radio activities of the ESL radio module defined by the second control stage for said period of time as a function of the radio activities of the ESL radio module defined by the first control stage for said period of time first
  • Radio module is formed. This enables a balanced consideration of the radio activities of both radio modules when using the common radio medium.
  • the third control stage has the role of a software-based co-existence coordinator.
  • the entirety of the sequence of radio activities stored in the first queue data structure represents a first future total communication duration and the entirety of the sequence of radio activities stored in the second queue data structure represents a second future total communication duration and the first Total communication time can be different from the second total communication time, such as 3 seconds for the first and 5 seconds for the second total communication duration.
  • the actual duration of the respective future total communication duration is de facto derived from the respective future communication requirement.
  • the respective maximum permissible total communication duration can also be limited, in particular matched to the communication protocol used.
  • the future time span for which the change in the sequence of future radio activities has to take place can now be limited to the shorter of the two total communication durations or can be dynamically adapted to it - that is to the respective situation.
  • Said future time period may also deviate from the aforementioned two total communication periods, and e.g. a substantially constant duration of e.g. B. concern about 1 second.
  • the third control stage is designed to change the respective queue data structure in such a way that with regard to the occurrence of time and / or with regard to the sequence of the occurrence in time, radio activities defined as absolutely necessary are retained in the time ranges provided for this or the sequence of such time ranges provided for, and that other radio activities are defined or planned in intermediate time ranges or subsequent time ranges. This measure ensures that those radio activities that are necessary to maintain the stability of the respective radio system can actually take place in the correct time context. In addition, with this
  • Training should also be provided that ultimately those radio activities of the ESL radio modules, which are absolutely necessary to maintain synchronism, are treated with the highest priority in order to keep the energy consumption of the display signs to a minimum and to optimize their service life.
  • a code can be stored in the respective queue data structure that makes the respective radio activity uniquely identifiable.
  • the third control stage can then be designed in such a way that it interprets the code and draws conclusions about the necessity of the respective radio activity.
  • the third control stage is designed to take metadata into account, the metadata being stored in the respective queue data structure and indicating (directly) the need for the time-related occurrence of the respective radio activity or the type of the respective radio activity .
  • the metadata can be the respective radio activities in the
  • Categorize queue data structure such as :
  • radio activity e.g. synchronization, data exchange, status query, etc.
  • + provides information about the possibility of re-sorting in the respective queue data structure (e.g. re-sorting allowed, re-sorting prohibited (because real-time transmission is required at the originally defined point in time, i.e. a change in the time of occurrence is prohibited) or
  • Duration of the radio activity which allows the duration for the time range or the time ranges for the respective radio activity to be defined (e.g. duration of the radio activity specified in absolute time units such as milliseconds,
  • Control stage should be designed for iterative changing in such a way that first the radio activities defined as mandatory and only then the other radio activities are taken into account for the said period of time.
  • the radio activities defined for said future time period are first analyzed and then those radio activities that are absolutely necessary and for which are identified
  • radio activities may require two or more passes. This is especially true if e.g. Both for the ESL radio module and for the first radio module, radio activities defined as absolutely necessary for one and the same time range are identified or for at least overlapping time ranges are identified. In this case it would be another
  • Time period defined time sequence of radio activities is formed as time progresses and / or new radio activities are added. So can For example, for each new radio activity that is added, the sequence of radio activities is changed, which corresponds to a (quasi) continuous adaptation of the change. Likewise, but preferably, a number of new radio activities can be added as an occasion for adapting the change in the temporal sequence of the
  • Radio activities can be taken for a future period of time. This corresponds to a blocked, gradual adjustment of the change. So z. B. 5, 10 or 15 new radio activities as
  • Radio activities can be taken for a future period of time.
  • the future time span that is actually to be taken into account cannot be a constant, but rather a function of the radio activities contained or to be taken into account.
  • the third control stage can also be designed to keep the actual duration of the time span within predefined limits.
  • the invention can preferably be used to implement a system having (at least) a radio base station according to the invention and having an ESL radio module connected to the USB connection.
  • the system that e.g. installed in a store, can also have a number of electronic signs, the ESL radio module
  • Radio technology e.g. by initial registration (also as
  • a server (service) coupled to the radio base station can be provided for the provision and / or processing of data relating to radio communication with the first radio communication devices and / or the electronic display signs.
  • the coupling can be based on LAN or cloud, for example.
  • FIG. 1 shows a system according to the invention for WiFi and ESL communication
  • FIG. 6 shows a second radio activity diagram
  • FIG. 1 a system 1 according to the invention installed on the premises of a supermarket is visualized that a first
  • Radio network for WiFi radio communication according to a first, WiFi communication protocol with different WiFi-enabled radio communication devices, such as one or more portable electronic stick code readers 11, which are part of an electronic merchandise management system of the supermarket, or also e.g. Mobile phones or mobile computers from customers, hereinafter referred to as user devices 16, which e.g. can access online services via a WiFi guest access of the first radio network.
  • WiFi-enabled radio communication devices such as one or more portable electronic stick code readers 11, which are part of an electronic merchandise management system of the supermarket, or also e.g. Mobile phones or mobile computers from customers, hereinafter referred to as user devices 16, which e.g. can access online services via a WiFi guest access of the first radio network.
  • the system 1 also provides a second radio network for radio communication according to a second, namely proprietary
  • ESL 2- 10 Price display signs 2 - 10, hereinafter referred to as ESL 2- 10 for short, which are also part of the electronic merchandise management system of the supermarket.
  • Each ESL 2-10 has a display unit 100 and is attached to shelves 12-14 of a shelf 15 corresponding to products (not shown) positioned on the shelf, with the help of which price and / or product information for the information of customers or from Supermarket staff are displayed.
  • the two different communication protocols have different temporal behavior as well as different priorities.
  • the system 1 has a radio base station 17, hereinafter abbreviated to station 17, and a server 18, which communicate with one another via a local, wired network (LAN) 19 are connected. Via this LAN 19, the server 18 communicates with the station 17 with the aid of the TCP / IP protocol, embedded in
  • Communication data KD raw data RD are interchangeable with the respective devices 2-10, 11 and 16.
  • the station 17 has a first electronic circuit 20, a first radio module 21 for radio communication with the bar code reading devices 11 and a USB connection 29, to which a second radio module 22, which is referred to below as the ESL radio module 22, for the Communication with the ESLs 2 - 10 is connected.
  • the circuit 20 has a micro controller 24 with a
  • Memory 25 which has a non-volatile memory area (eg ROM - Read Only Memory - or E / 2PROM - Electrically Erasable Read Only Memory) and a volatile memory area (eg RAM - Random Access Memory), both of which are not shown.
  • a first control stage 26 is used as a WiFi device driver for controlling the WiFi radio communication
  • a second control stage 27 is used as an ESL device driver to control the ESL radio communication
  • a third control stage 26 is used as a WiFi device driver for controlling the WiFi radio communication
  • ESL device driver to control the ESL radio communication
  • Control stage 26 for a future time period defines a temporal sequence of WiFi radio activities of the first radio module 21 as a function of ESL radio activities of the ESL radio module 22 defined by the second control stage 27 for said future time period, which will be discussed in more detail below.
  • the first radio module 21 has a second programmable electronic circuit 30 that has a first firmware 31 of the first
  • Radio module 21 processed.
  • the first radio module 21 and the first electronic circuit 24 are installed in the device housing (not shown) of the radio base station 17 and are electronically connected to one another.
  • First antenna 32 connected to electronic circuit 30 is mechanically attached to the device housing.
  • the antenna 32 can also be used internally in the
  • Device housing must be localized or installed.
  • the ESL radio module 22 has a third programmable
  • the electronic circuit 33 which processes a second firmware 34 of the ESL radio module 22.
  • the ESL radio module 22 is outside the Device housing of the radio base station 17 located and has its own device housing (not shown).
  • Circuit 33 electronically connected second antenna 35 is mechanically attached to the device housing of the ESL radio module 22.
  • the ESL radio module 22 has a USB plug 36 which connects the third circuit 33 to the USB port 29 via a USB cable 37.
  • the server 18 has a data storage stage 40, e.g. for the
  • Storage of a database for storing all information relates to the ERP system and / or the communication with the individual participants in the radio network.
  • the uppermost sequence of states shows the states of the ESL radio module 22 identified by ST.
  • a time slot cycle duration DC e.g. 15 seconds
  • N time slots ZI ... ZN e.g. 256
  • an identical time slot duration DS e.g. approx. 58 milliseconds
  • the ESL radio module 22 changes between a transmission state T and an idle state R.
  • the transmission state T is always at the beginning of a time slot ZI ... ZN
  • a synchronization data signal duration DSD (or transmission duration DSD of the synchronization data signal SD) in order to match the respective synchronization data signal SD
  • Timeslot symbol ZS1, ZS2, ... ZSN to send.
  • the applicable time slot cycle symbol ZS1 ... ZSN comes the sequential number of the respective time slot ZI ... ZN in the order in which the time slots ZI ... occur.
  • ZN used. 2 shows that the first ESL 2 is in the more synchronous state. It wakes up from its extremely energy-saving sleep state S at a first wake-up time TAI and changes with a relatively short lead time DV before an expected occurrence
  • Synchronization data signal SD in its ready-to-receive active state E receives the synchronization data signal SD during one
  • Synchronization data signal SD of the first time slot ZI are embedded by the ESL radio module 22 address data AD, command data CD and confirmation time data ZD.
  • address data AD e.g. Hex B2: 00: 01
  • the first ESL 2 becomes
  • the help of the address data AD e.g. Hex B2: 00: 02
  • the second ESL 3 e.g. Hex B2: 00 : 03
  • a "PING" command is transmitted to the first ESL 2, a "PING” command to the second ESL 3 and a "SWPAG2" command to the third ESL 4.
  • These commands are single time slot commands , which immediately after their decoding in the relevant ESL 2 - 4 are processed with negligible expenditure of time.
  • the two “PING” commands it is tested whether the addressed ESL 2, 3 reports back with confirmation data ACD, that is, whether it exists or even reacts and is synchronized.
  • the third ESL 4 switching from a (first) current memory page (or memory page) to a second memory page (or memory page) causes, for example, to change the image to be displayed using its display.
  • the synchronization data signal SD transmits a confirmation time for the first ESL 2 by specifying a first idle period DR1, for the second ESL 3 by specifying a second idle period DR2 and for the third ESL 4 by specifying a third idle period DR3.
  • the reference point for the three rest periods DR1 - DR3 is always the end of the reception period DE.
  • maximum periods for answering can also be specified, which result from the sum of the respective rest periods DR1-DR3 and the period for delivering the confirmation data ACD.
  • all three ESL 2-4 recognize that they are synchronous because the first time slot symbol ZI indicates the time slot intended for them (least significant byte B0 of the hardware address is 00 for all three ESL 2-4).
  • the check of the address data AD indicates that each ESL 2-4 is individually addressed (existence of the remaining three bytes B1-3 of the respective hardware address in the address data AD), the commands intended for the respective ESL 2-4 are decoded and executed immediately, and the individual confirmation data ACD after the end of the individual idle periods DR1 ...
  • FIG. 4 shows the processing of a multiple time slot command, in which the first ESL 2 splits total data over three adjacent time slots ZI - Z3 (for example relating to an entire image to be displayed or only one image plane of the image) into three data packets DAT1 - DAT3 from the ESL radio module 22 receives.
  • the first ESL 2 recognizes with the help of the
  • Synchronization data signal SD its synchronous state and that it is individually addressed (addressees Hex B2: 00: 01), receives and decodes a "DATA_I NIT" command with which it receives the three data packets DAT1 - DAT3 in said time slots ZI - Z3 is commanded, and at the end of the reception period DE goes into the sleep state S for a first waiting period DW1, the first waiting period DW1 expiring at the end of the first half of the time slot period DS.
  • the ESL radio module 22 goes into its transmission state T and the first ESL 2 into its active state E ready to receive, so that it is active during a
  • Data transmission duration DT receives the first data packet DAT1. Then it confirms with the help of partial confirmation data ACD1 during a
  • Reception state E is successful reception.
  • the confirmation period DA ends before the end of the first time slot ZI. After the expiry of the
  • Confirmation period DA lingers the first ESL 2 for a second waiting period DW2, which lasts until the end of the first part 42 of the second (subsequent)
  • Time slot Z2 is sufficient, in the sleep state S.
  • the ESL radio module 22 goes into its transmission state T and the first ESL 2 into its ready-to-receive active state E, so that it does this during a data transmission period DT receives second data packet DAT2.
  • Each successfully transmitted data packet DAT1 - DAT3 is confirmed with the aid of the partial confirmation data ACD1 - ACD3.
  • the data transmissions to be carried out by the two radio modules 21 and 22 are forwarded to theirs by the server 18
  • the first queue data structure 38 is accessed by the first control stage 26 in order to control the WiFi radio activity of the WiFi radio module 21 in accordance with the stored entries in accordance with the WiFi communication protocol used Taxes.
  • the second queue data structure 38 is accessed by the second control stage 27 in order to control the ESL radio activity of the ESL radio module 22 in accordance with the stored entries in accordance with the time slot communication protocol discussed.
  • the two control stages 26 and 27 work synchronously, whereby they have a common electronic time base
  • Use circuit 20 You always read the one stored in the respective queue data structure 38 or 39 for the current time
  • the station 17 has a third, separately designed, software-based control stage 28, which likewise uses the common time base and the sequence of WiFi radio activities stored in the first queue data structure 38 as a function of the sequences stored in the second queue data structure 39 ESL radio activities changed.
  • the third control stage 28 ignores those for the current moment
  • Frequencies are used, which has the consequence that, in addition to radio reception activities (such as receiving the confirmation data ACD or partial confirmation data ACD1 - ACD3), transmission radio activities of the ESL radio module (in particular for transmitting the synchronization data signal SD) to be coordinated or taken into account in forward-looking planning.
  • the ESL radio activities F1 (N) are in the lower area and the WiFi radio activities F2 (M) in the middle area Time axis t shown, the letters N and M between brackets each a whole, positive number as the sequential number of the concerned
  • the third control stage 28 only takes into account the future ESL radio activities Fl (l) - Fl (7) and the future WiFi radio activities F2 (l) - F2 (4), which occur within the future time period TD and in the respective one
  • the radio activities Fl (l) to Fl (5) relate to the transmission of the synchronization data signal SD comprising the respective time slot symbol ZS1-ZS6, which is essential for maintaining synchronism in the ESL radio system. They occupy essentially the same length
  • the radio activities Fl (6) and Fl (7) relate to communication in the ESL radio system according to the description of FIGS. 3 or 4. Depending on the actual data content or data volume, they can occupy time periods of different durations.
  • the third control stage 28 knows the temporal behavior of the ESL communication protocol and prioritizes the ESL radio activities Fl (l) - Fl (7) over the WiFi radio activities F2 (l) - F2 (4).
  • the WiFi radio activity is:
  • the third control stage 28 is designed to change the chronological sequence of the WiFi radio activities F2 (M) and the ESL radio activities F1 (N) taking into account the metadata Ml-M5.
  • the change is visualized for the chronological sequence of the ESL radio activities F1 (N) in the diagram section F1 (N) ' and for the chronological sequence of the WiFi radio activities F2 (M) in the diagram section F2 (M) ' .
  • First metadata Ml thus define the highest priority for the radio activities Fl (l) - Fl (5), as well as a ban on changing their temporal distance from one another or letting them occur in a different order than they occur in the sequence of the radio activities F1 (N ) are listed.
  • the third control stage 28 thus leaves them in their original time ranges, as can be seen in the comparison between the diagrams F1 (N) and F1 (N) ' .
  • second metadata M2 define the lowest priority and that their occurrence in time as well as the time interval to neighboring radio activities is uncritical, that is to say variable.
  • the third control stage 28 consequently relocates it between the two ESL radio activities Fl (l) ' and Fl (2) ' .
  • third metadata M3 define that the radio activity F2 (4) has the second highest priority, but its temporal relationship is not critical, which means that it can be divided into different time ranges.
  • Fourth metadata M4 which the ESL radio activity Fl (6)
  • fifth metadata M5 define that the ESL radio activity Fl (7) is also to be carried out with the highest priority and immovable and cannot be divided.
  • the third control stage 28 divides the WiFi radio activity F2 (4) in such a way that a longer part before the ESL radio activity Fl (3) 'and a shorter part after it, but before the ESL radio activity Fl (7)' , which is planned as the time of radio activity Fl (7), occurs (see two
  • Radio activities F2 (4) ' are also defined time range (see Fl (7) ' ). Furthermore, the ESL radio activity Fl (6) is shifted to the next time range available with regard to its required duration, that is to say the time range between the ESL radio activity Fl (4) ' and Fl (5) ' (see there Fl (6) ' ) .
  • Diagram sections F1 (N) ' and F2 (M) ' are shown, where it can be seen that there is no temporal overlap of the radio activities in the overview of the diagram sections Fl (N) ' and F2 (M) ' .
  • confirmation data ADC or partial confirmation data ACD1-ACD3, for which it is foresightedly ensured according to the functional principles discussed above that no interference can occur in the common radio medium.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne une station de base radio comprenant un premier module radio pour la communication radio avec des premiers appareils de communication radio, et une borne pour le raccordement d'un module radio ESL pour la communication radio avec des panneaux d'affichage électroniques, la station de base radio présentant un premier étage de commande, en particulier basé sur logiciel, destiné à commander la communication radio du premier module radio selon un premier protocole de communication, un deuxième étage de commande, en particulier basé sur logiciel, destiné à commander la communication radio du module radio ESL pouvant être raccordé à la borne selon un deuxième protocole de communication, et un troisième étage de commande, en particulier basé sur logiciel, destiné à modifier de manière prévisionnelle une suite temporelle d'activités radio du premier module radio, définie pour un intervalle de temps futur, en fonction des activités radio du module radio ESL définies pour ledit intervalle de temps futur.
EP18796875.5A 2018-10-26 2018-10-26 Station de base radio pour la communication radio combinée Pending EP3871338A1 (fr)

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WO2024045152A1 (fr) * 2022-09-02 2024-03-07 Qualcomm Incorporated Solutions basées sur un scénario d'utilisateur pour une optimisation de performance dans des réseaux d'étiquettes de magasin électronique

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US20240177689A1 (en) 2024-05-30
CN113243086B (zh) 2022-12-16
AU2018446354A1 (en) 2021-05-20
WO2020083512A1 (fr) 2020-04-30
US20210398506A1 (en) 2021-12-23
CN113243086A (zh) 2021-08-10

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