WO2010035913A1 - Wireless communication semiconductor device having a bidirectional wake-up function - Google Patents
Wireless communication semiconductor device having a bidirectional wake-up function Download PDFInfo
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- WO2010035913A1 WO2010035913A1 PCT/KR2008/005656 KR2008005656W WO2010035913A1 WO 2010035913 A1 WO2010035913 A1 WO 2010035913A1 KR 2008005656 W KR2008005656 W KR 2008005656W WO 2010035913 A1 WO2010035913 A1 WO 2010035913A1
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- Prior art keywords
- wake
- signal
- reception unit
- transmission
- data
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- 238000004891 communication Methods 0.000 title claims abstract description 39
- 230000006854 communication Effects 0.000 title claims abstract description 39
- 239000004065 semiconductor Substances 0.000 title claims abstract description 33
- 230000002457 bidirectional effect Effects 0.000 title description 5
- 230000005540 biological transmission Effects 0.000 claims abstract description 48
- 230000008054 signal transmission Effects 0.000 claims abstract description 40
- 230000004044 response Effects 0.000 claims abstract description 4
- 230000002618 waking effect Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000006424 Flood reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0235—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a power saving command
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Definitions
- the present invention relates, in general, to a wireless communication semiconductor device, and, more particularly, to a wireless communication semiconductor device having a bidirectional wake-up function which can be used in a ubiquitous sensor network.
- USN' means a network system in which a wireless sensor network is constructed using sensor nodes provided with sensors capable of sensing recognition information about objects or surrounding environmental information, and in which information, input through various sensor nodes, is connected in real time to external systems through the network and is then processed and managed.
- the ultimate purpose of a USN is to implement environments which enable communication anytime, anywhere, regardless of the networks, devices or services, by assigning computing and communication functions to all objects.
- a typical USN may include sensor nodes, each including a sensor for sensing recognition information about objects or surrounding environmental information in real time and a communication module, a sensor field composed of sets of sensor nodes, a sink node for receiving information collected by the sensor field, and a gateway for routing the information received from the sink node and transmitting the information to a management server over a wideband communication network.
- the sink node may be connected to the gateway through an existing infrastructure, such as satellite communication, a Wireless Local Area Network (WLAN), Bluetooth, or the wireless Internet.
- WLAN Wireless Local Area Network
- Such a USN may be used to sense the occurrence of disasters such as fires, floods, or earthquakes when they occur, and to cope with the disasters.
- the sensor nodes constituting the USN must be operated at low power, most of the sensor nodes are basically operated in a time-driven manner based on a periodic sleep mode and a wake -up function through the use of beacon signals or Time Division Multiple Access (TDMA).
- TDMA Time Division Multiple Access
- the time-driven manner is limited in that an immediate reaction is impossible during an unnecessary wake-up occurrence period and a sleep period.
- an object of the present invention is to provide a wireless communication semiconductor device, which is operated in an event-driven manner based on a bidirectional wake-up function, thus being driven at ultra low power.
- the present invention provides a wireless communication semiconductor device, comprising a data transmission/reception unit provided with a transmission terminal (Tx_Data) and a reception terminal (Rx_Data), and configured to transmit or receive data to or from an outside through the transmission terminal and the reception terminal; a wake-up signal transmission/ reception unit provided with a wake-up transmission terminal (Tx_Wake_Up) and a wake-up reception terminal (Rx_Wake_Up), and configured to transmit or receive a wake-up signal to or from an outside through the wake-up transmission terminal and the wake-up reception terminal; and a microprocessor configured to perform signal processing on data received from the data transmission/reception unit or transmit signal-processed data to an outside through the data transmission/reception unit, the microprocessor waking up in response to a wake-up signal received from the wake-up signal transmission/reception unit when in sleep mode, wherein when the data transmission/reception unit and the microprocessor are operating in sleep mode, the wake-up
- the wake-up signal transmission/reception unit reads infor mation about a wake-up target from the received signal, and generates an interrupt signal for the microprocessor and enables the microprocessor if the received signal is a wake-up signal for the wake-up signal transmission/reception unit itself, and then the microprocessor enables the data transmission/reception unit.
- the wake-up signal transmission/reception unit reads information about a wake -up target from the received signal, and transmits the received signal to the outside through the wake-up transmission terminal (Tx_Wake_Up) if the received signal is a wake-up signal for another sensor node.
- the data transmission/reception unit and the wake -up signal transmission/reception unit transmit or receive signals using different frequency bands.
- the wireless communication semiconductor device is configured such that, since, in sleep mode, only a wake-up signal transmission/reception unit driven at ultra low power is turned on and both a microprocessor and a data transmission/reception unit enter sleep mode, the semiconductor device can minimize power consumption when in sleep mode, in which data is neither transmitted nor received.
- the wireless communication semiconductor device enables a wake-up signal to be bidirectionally transmitted or received even when in sleep mode, thus transmitting a wake-up signal to another node of a network, as well as receiving a wake-up signal from another node, even when in sleep mode.
- the wireless communication semiconductor device is configured such that both a data transmission/reception unit and a microprocessor are enabled only when a wake-up signal is received through a wake-up signal transmission/reception unit, thus reducing the entire power consumption.
- FIG. 1 is a block diagram schematically showing the construction of a wireless communication semiconductor device according to an embodiment of the present invention.
- FIG. 2 is a flowchart sequentially showing the operation of the wake-up signal transmission/reception unit of the wireless communication semiconductor device according to an embodiment of the present invention. Best Mode for Carrying Out the Invention
- FIG. 1 is a block diagram schematically showing the construction of a wireless communication semiconductor device according to an embodiment of the present invention.
- a semiconductor device 10 for wireless communication includes a data transmission/reception unit 100 for transmitting or receiving data to or from the outside of the semiconductor device in a wireless manner, a wake-up signal transmission/reception unit 110 for transmitting or receiving a wake-up signal to or from the outside in a wireless manner, and a microprocessor 120.
- the wireless communication semiconductor device according to the present invention having the above construction is a new type of device for providing a wake-up function to a Radio Frequency (RF) microprocessor used in a Ubiquitous Sensor Network (USN) or Zigbee.
- RF Radio Frequency
- the microprocessor 120 performs signal processing on data received from the data transmission/reception unit, or transmits signal-processed data to the outside through the data transmission/reception unit.
- the microprocessor 120 wakes up in response to a wake-up signal received from the wake-up signal transmission/reception unit.
- the wake-up signal is implemented using a frequency band differing from that of the data transmission/reception unit, and has therein a wake-up code and a destination address that are agreed upon.
- the wake -up signal transmission/reception unit determines whether a received signal is an agreed- upon wake-up code and whether the destination of the received signal is the agreed- upon designation through comparison, and interrupts the microprocessor if the results of the determination match each other, thus enabling the microprocessor.
- the data transmission/reception unit 100 includes a transmission terminal Tx_Data and a reception terminal Rx_Data, and transmits or receives data to or from the outside.
- signals are transmitted or received in a frequency band of 2.4 GHz.
- the data transmission/reception unit demodulates data received through the reception terminal and transmits the demodulated data to the microprocessor, or modulates data received from the microprocessor and transmits the modulated data to the outside through the transmission terminal.
- the data transmission/reception unit performs a procedure for transmitting a wake-up signal to a destination address in advance, and enabling the data reception unit of a destination.
- the wake-up signal transmission/reception unit 110 includes a wake-up signal transmission terminal Tx_Wake_Up and a wake-up signal reception terminal Rx_Wake_Up, and transmits or receives a wake-up signal to or from the outside.
- the wake-up signal transmission/ reception unit wakes up the microprocessor by transmitting an interrupt signal to the microprocessor, or transmits the wake -up signal to another node through the wake-up signal transmission terminal. A detailed operation of the wake-up signal transmission/ reception unit will be described later.
- the wireless communication semiconductor device When the wireless communication semiconductor device according to the present invention enters sleep mode, the data transmission/reception unit and the microprocessor are operating in sleep mode, and the wake -up signal transmission/reception unit is operating in an enabled state.
- FIG. 2 is a flowchart sequentially showing the operation of the wake-up signal transmission/reception unit.
- the wake-up signal transmission/reception unit When receiving a signal including a wake-up code from the outside at step 200, the wake-up signal transmission/reception unit reads information about a wake-up target from the received signal at step 210, and determines which node is the wake-up target at step 220.
- the wake-up signal transmission/reception unit When the received signal is a wake-up signal for the sensor node to which the wake-up signal transmission/reception unit itself belongs, the wake-up signal transmission/reception unit generates an interrupt signal for the microprocessor, thus enabling the microprocessor at step 230.
- the microprocessor having received the interrupt signal, enables the data transmission/reception unit.
- the enabled data transmission/reception unit receives data from the outside through its own reception terminal Rx_Data and transmits the received data to the microprocessor.
- the wake-up signal transmission/reception unit transmits the received signal to the outside through its own transmission terminal Tx_Wake_Up at step 240.
- the data transmission/reception unit and the wake-up signal transmission/reception unit of the wireless communication semiconductor device according to the present invention preferably transmit or receive signals using different frequency bands, thus enabling a data transmission path and a wake-up signal transmission path to be separated from each other.
- the data transmission/reception unit which transmits or receives data
- the wake-up signal transmission/reception unit which transmits or receives a wake -up signal
- the wireless communication network is configured to transmit signals to respective nodes in a multi-hop manner. Therefore, after relevant nodes are woken up by transmitting wake-up signals to the nodes through the wake-up signal transmission path thereof, data is transmitted through the data transmission path of each relevant node.
- the microprocessors and data transmission/reception units of the respective nodes constituting the wireless com- munication network may be operated in sleep mode, and only wake-up signal transmission/reception units, driven at low power, are enabled, thus minimizing power consumption of the nodes.
- a wireless communication semiconductor device enables the transmission or reception of bidirectional wake -up signals, and may be used as a sensor node constituting a wireless sensor network or a ubiquitous sensor network.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention relates to a wireless communication semiconductor device. The wireless communication semiconductor device includes a data transmission/reception unit (100) for transmitting or receiving data to or from an outside, a wake-up signal transmission/reception unit (110) for transmitting or receiving a wake-up signal to or from an outside, and a microprocessor (120). The microprocessor performs signal processing on data received from the data transmission/reception unit or transmits signal-processed data to an outside through the data transmission/reception unit. The microprocessor wakes up in response to the wake-up signal received from the wake-up signal transmission/reception unit when in sleep mode. When the wireless communication semiconductor device is in sleep mode, the data transmission/reception unit and the microprocessor are operating in sleep mode, and the wake-up signal transmission/reception unit is operating in an enabled state. The wireless communication semiconductor device of the present invention can minimize power consumption.
Description
Description
WIRELESS COMMUNICATION SEMICONDUCTOR DEVICE HAVING A BIDIRECTIONAL WAKE-UP FUNCTION
Technical Field
[1] The present invention relates, in general, to a wireless communication semiconductor device, and, more particularly, to a wireless communication semiconductor device having a bidirectional wake-up function which can be used in a ubiquitous sensor network. Background Art
[2] Generally, the term 'Ubiquitous Sensor Network: USN' means a network system in which a wireless sensor network is constructed using sensor nodes provided with sensors capable of sensing recognition information about objects or surrounding environmental information, and in which information, input through various sensor nodes, is connected in real time to external systems through the network and is then processed and managed. The ultimate purpose of a USN is to implement environments which enable communication anytime, anywhere, regardless of the networks, devices or services, by assigning computing and communication functions to all objects.
[3] A typical USN may include sensor nodes, each including a sensor for sensing recognition information about objects or surrounding environmental information in real time and a communication module, a sensor field composed of sets of sensor nodes, a sink node for receiving information collected by the sensor field, and a gateway for routing the information received from the sink node and transmitting the information to a management server over a wideband communication network. In the above construction, the sink node may be connected to the gateway through an existing infrastructure, such as satellite communication, a Wireless Local Area Network (WLAN), Bluetooth, or the wireless Internet. Such a USN may be used to sense the occurrence of disasters such as fires, floods, or earthquakes when they occur, and to cope with the disasters.
[4] Since the sensor nodes constituting the USN must be operated at low power, most of the sensor nodes are basically operated in a time-driven manner based on a periodic sleep mode and a wake -up function through the use of beacon signals or Time Division Multiple Access (TDMA). However, the time-driven manner is limited in that an immediate reaction is impossible during an unnecessary wake-up occurrence period and a sleep period.
[5] Meanwhile, in the prior art, in order to improve the low-power performance of sensor nodes, a software-based solution method using Media Access Control (MAC) or a
network algorithm has in most cases been searched for. However, such a conventional software-based solution method is limited because, in the case of the application of a mobile sensor node (a mobile terminal, a card terminal, a product tag, etc.) to which an external signal arrives at an arbitrary time, a reception unit must be continuously turned on, so that it is difficult to realize low-power and long-term use of sensor nodes. Disclosure of Invention Technical Problem
[6] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a wireless communication semiconductor device, which is operated in an event-driven manner based on a bidirectional wake-up function, thus being driven at ultra low power.
Technical Solution
[7] In order to accomplish the above object, the present invention provides a wireless communication semiconductor device, comprising a data transmission/reception unit provided with a transmission terminal (Tx_Data) and a reception terminal (Rx_Data), and configured to transmit or receive data to or from an outside through the transmission terminal and the reception terminal; a wake-up signal transmission/ reception unit provided with a wake-up transmission terminal (Tx_Wake_Up) and a wake-up reception terminal (Rx_Wake_Up), and configured to transmit or receive a wake-up signal to or from an outside through the wake-up transmission terminal and the wake-up reception terminal; and a microprocessor configured to perform signal processing on data received from the data transmission/reception unit or transmit signal-processed data to an outside through the data transmission/reception unit, the microprocessor waking up in response to a wake-up signal received from the wake-up signal transmission/reception unit when in sleep mode, wherein when the data transmission/reception unit and the microprocessor are operating in sleep mode, the wake-up signal transmission/reception unit is operating in an enabled state.
[8] In the wireless communication semiconductor device, wherein when a signal, including a wake-up code, is received from the outside through the wake-up reception terminal (Rx_Wake_Up), the wake-up signal transmission/reception unit reads infor mation about a wake-up target from the received signal, and generates an interrupt signal for the microprocessor and enables the microprocessor if the received signal is a wake-up signal for the wake-up signal transmission/reception unit itself, and then the microprocessor enables the data transmission/reception unit.
[9] Further, in the wireless communication semiconductor device, wherein when a signal, including a wake-up code, is received from the outside, the wake-up signal
transmission/reception unit reads information about a wake -up target from the received signal, and transmits the received signal to the outside through the wake-up transmission terminal (Tx_Wake_Up) if the received signal is a wake-up signal for another sensor node.
[10] In addition, in the wireless communication semiconductor device, the data transmission/reception unit and the wake -up signal transmission/reception unit transmit or receive signals using different frequency bands.
[H]
Advantageous Effects
[12] The wireless communication semiconductor device according to the present invention is configured such that, since, in sleep mode, only a wake-up signal transmission/reception unit driven at ultra low power is turned on and both a microprocessor and a data transmission/reception unit enter sleep mode, the semiconductor device can minimize power consumption when in sleep mode, in which data is neither transmitted nor received.
[13] Further, the wireless communication semiconductor device according to the present invention enables a wake-up signal to be bidirectionally transmitted or received even when in sleep mode, thus transmitting a wake-up signal to another node of a network, as well as receiving a wake-up signal from another node, even when in sleep mode.
[14] In addition, the wireless communication semiconductor device according to the present invention is configured such that both a data transmission/reception unit and a microprocessor are enabled only when a wake-up signal is received through a wake-up signal transmission/reception unit, thus reducing the entire power consumption. Brief Description of the Drawings
[15] FIG. 1 is a block diagram schematically showing the construction of a wireless communication semiconductor device according to an embodiment of the present invention; and
[16] FIG. 2 is a flowchart sequentially showing the operation of the wake-up signal transmission/reception unit of the wireless communication semiconductor device according to an embodiment of the present invention. Best Mode for Carrying Out the Invention
[17] Hereinafter, a wireless communication semiconductor device according to embodi ments of the present invention will be described in detail with reference to the attached drawings.
[18] FIG. 1 is a block diagram schematically showing the construction of a wireless communication semiconductor device according to an embodiment of the present invention. Referring to FIG. 1, a semiconductor device 10 for wireless communication
includes a data transmission/reception unit 100 for transmitting or receiving data to or from the outside of the semiconductor device in a wireless manner, a wake-up signal transmission/reception unit 110 for transmitting or receiving a wake-up signal to or from the outside in a wireless manner, and a microprocessor 120. The wireless communication semiconductor device according to the present invention having the above construction is a new type of device for providing a wake-up function to a Radio Frequency (RF) microprocessor used in a Ubiquitous Sensor Network (USN) or Zigbee.
[19] The microprocessor 120 performs signal processing on data received from the data transmission/reception unit, or transmits signal-processed data to the outside through the data transmission/reception unit. When in sleep mode, the microprocessor 120 wakes up in response to a wake-up signal received from the wake-up signal transmission/reception unit. The wake-up signal is implemented using a frequency band differing from that of the data transmission/reception unit, and has therein a wake-up code and a destination address that are agreed upon. Therefore, the wake -up signal transmission/reception unit determines whether a received signal is an agreed- upon wake-up code and whether the destination of the received signal is the agreed- upon designation through comparison, and interrupts the microprocessor if the results of the determination match each other, thus enabling the microprocessor.
[20] The data transmission/reception unit 100 includes a transmission terminal Tx_Data and a reception terminal Rx_Data, and transmits or receives data to or from the outside. In an embodiment of the present invention, signals are transmitted or received in a frequency band of 2.4 GHz. Meanwhile, the data transmission/reception unit demodulates data received through the reception terminal and transmits the demodulated data to the microprocessor, or modulates data received from the microprocessor and transmits the modulated data to the outside through the transmission terminal. In particular, before transmitting data, the data transmission/reception unit performs a procedure for transmitting a wake-up signal to a destination address in advance, and enabling the data reception unit of a destination.
[21] The wake-up signal transmission/reception unit 110 includes a wake-up signal transmission terminal Tx_Wake_Up and a wake-up signal reception terminal Rx_Wake_Up, and transmits or receives a wake-up signal to or from the outside. When a wake-up signal is received from the outside, the wake-up signal transmission/ reception unit wakes up the microprocessor by transmitting an interrupt signal to the microprocessor, or transmits the wake -up signal to another node through the wake-up signal transmission terminal. A detailed operation of the wake-up signal transmission/ reception unit will be described later.
[22] When the wireless communication semiconductor device according to the present
invention enters sleep mode, the data transmission/reception unit and the microprocessor are operating in sleep mode, and the wake -up signal transmission/reception unit is operating in an enabled state.
[23] Hereinafter, with reference to FIG. 2, the operation of the wake -up signal transmission/reception unit of the above-described wireless communication semiconductor device is described. FIG. 2 is a flowchart sequentially showing the operation of the wake-up signal transmission/reception unit.
[24] When receiving a signal including a wake-up code from the outside at step 200, the wake-up signal transmission/reception unit reads information about a wake-up target from the received signal at step 210, and determines which node is the wake-up target at step 220. When the received signal is a wake-up signal for the sensor node to which the wake-up signal transmission/reception unit itself belongs, the wake-up signal transmission/reception unit generates an interrupt signal for the microprocessor, thus enabling the microprocessor at step 230. At this time, the microprocessor, having received the interrupt signal, enables the data transmission/reception unit. The enabled data transmission/reception unit receives data from the outside through its own reception terminal Rx_Data and transmits the received data to the microprocessor.
[25] Meanwhile, in the reading procedure, when the received signal is a wake-up signal for another sensor node, the wake-up signal transmission/reception unit transmits the received signal to the outside through its own transmission terminal Tx_Wake_Up at step 240.
[26] The data transmission/reception unit and the wake-up signal transmission/reception unit of the wireless communication semiconductor device according to the present invention preferably transmit or receive signals using different frequency bands, thus enabling a data transmission path and a wake-up signal transmission path to be separated from each other. At this time, the data transmission/reception unit, which transmits or receives data, may use signals in a 2.4 GHz-band, and the wake-up signal transmission/reception unit, which transmits or receives a wake -up signal, may use signals in a 400 MHz-band.
[27] Meanwhile, the operation of a wireless communication network composed of nodes, completed using the wireless communication semiconductor device according to the present invention, is described below. In this case, the wireless communication network is configured to transmit signals to respective nodes in a multi-hop manner. Therefore, after relevant nodes are woken up by transmitting wake-up signals to the nodes through the wake-up signal transmission path thereof, data is transmitted through the data transmission path of each relevant node. Through this construction, after the transmission/reception of data has been terminated, the microprocessors and data transmission/reception units of the respective nodes constituting the wireless com-
munication network may be operated in sleep mode, and only wake-up signal transmission/reception units, driven at low power, are enabled, thus minimizing power consumption of the nodes. [28]
Industrial Applicability [29] A wireless communication semiconductor device according to the present invention enables the transmission or reception of bidirectional wake -up signals, and may be used as a sensor node constituting a wireless sensor network or a ubiquitous sensor network.
Claims
[1] A wireless communication semiconductor device, comprising: a data transmission/reception unit provided with a transmission terminal (Tx_Data) and a reception terminal (Rx_Data), and configured to transmit or receive data to or from an outside through the transmission terminal and the reception terminal; a wake -up signal transmission/reception unit provided with a wake-up transmission terminal (Tx_Wake_Up) and a wake-up reception terminal (Rx_Wake_Up), and configured to transmit or receive a wake-up signal to or from an outside through the wake-up transmission terminal and the wake-up reception terminal; and a microprocessor configured to perform signal processing on data received from the data transmission/reception unit or transmit signal-processed data to an outside through the data transmission/reception unit, the microprocessor waking up in response to a wake-up signal received from the wake-up signal transmission/reception unit when in sleep mode, wherein when the data transmission/reception unit and the microprocessor are operating in sleep mode, the wake-up signal transmission/reception unit is operating in an enabled state.
[2] The wireless communication semiconductor device according to claim 1, wherein when a signal, including a wake -up code, is received from the outside through the wake-up reception terminal (Rx_Wake_Up), the wake-up signal transmission/reception unit reads information about a wake-up target from the received signal, and generates an interrupt signal for the microprocessor and enables the microprocessor if the received signal is a wake-up signal for the wake-up signal transmission/reception unit itself, and then the microprocessor enables the data transmission/reception unit.
[3] The wireless communication semiconductor device according to claim 1, wherein when a signal, including a wake -up code, is received from the outside, the wake-up signal transmission/reception unit reads information about a wake- up target from the received signal, and transmits the received signal to the outside through the wake-up transmission terminal (Tx_Wake_Up) if the received signal is a wake -up signal for another sensor node.
[4] The wireless communication semiconductor device according to claim 1, wherein the data transmission/reception unit and the wake-up signal transmission/reception unit transmit or receive signals using different frequency bands.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/KR2008/005656 WO2010035913A1 (en) | 2008-09-24 | 2008-09-24 | Wireless communication semiconductor device having a bidirectional wake-up function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/KR2008/005656 WO2010035913A1 (en) | 2008-09-24 | 2008-09-24 | Wireless communication semiconductor device having a bidirectional wake-up function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2010035913A1 true WO2010035913A1 (en) | 2010-04-01 |
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ID=42059893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2008/005656 WO2010035913A1 (en) | 2008-09-24 | 2008-09-24 | Wireless communication semiconductor device having a bidirectional wake-up function |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2010035913A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019174947A1 (en) * | 2018-03-16 | 2019-09-19 | Sony Mobile Communications Inc. | Wake-up transmission on a separate carrier |
| CN111083772A (en) * | 2019-11-26 | 2020-04-28 | 小唐科技（上海）有限公司 | Sleep awakening method for mobile communication terminal |
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| US20060270381A1 (en) * | 2005-05-27 | 2006-11-30 | Samsung Electro-Mechanics Co., Ltd. | Wireless receiver |
| US20070205873A1 (en) * | 2006-02-23 | 2007-09-06 | Mickle Marlin H | Methods and apparatus for switching a transponder to an active state, and asset management systems employing same |
| US20080061943A1 (en) * | 2006-08-11 | 2008-03-13 | Ke-Li Wu | RFID systems and methods of operating the same in power-saving modes |
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2008
- 2008-09-24 WO PCT/KR2008/005656 patent/WO2010035913A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20060202804A1 (en) * | 2005-03-09 | 2006-09-14 | Intermec Ip Corp., | Sleep command for active RF tags to prolong battery life |
| US20060270381A1 (en) * | 2005-05-27 | 2006-11-30 | Samsung Electro-Mechanics Co., Ltd. | Wireless receiver |
| US20070205873A1 (en) * | 2006-02-23 | 2007-09-06 | Mickle Marlin H | Methods and apparatus for switching a transponder to an active state, and asset management systems employing same |
| US20080061943A1 (en) * | 2006-08-11 | 2008-03-13 | Ke-Li Wu | RFID systems and methods of operating the same in power-saving modes |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2019174947A1 (en) * | 2018-03-16 | 2019-09-19 | Sony Mobile Communications Inc. | Wake-up transmission on a separate carrier |
| CN111083772A (en) * | 2019-11-26 | 2020-04-28 | 小唐科技（上海）有限公司 | Sleep awakening method for mobile communication terminal |
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