KR102670045B1 - Wirelss USB telecommunication unit - Google Patents

Abstract

The present invention relates to a wireless USB communication unit, and more specifically, to a wireless USB communication unit that can quickly and easily transmit and receive large amounts of data from a USB device to a USB host through high-frequency wireless communication. The wireless USB communication unit according to the present invention includes a device transmitting and receiving module mounted on or built into a USB device and including a wireless communication chip capable of wireless communication, and a wireless communication chip mounted on or built into a USB host and capable of wireless communication. and a host transceiver module, wherein when the USB host wants to transmit and receive data, the host transceiver module and the device transceiver module are interconnected to transmit and receive wireless data.

Description

Wireless USB telecommunication unit {Wirelss USB telecommunication unit}

The present invention relates to a wireless USB communication unit, and more specifically, to quickly and easily transmit and receive large amounts of data between USB devices at an uncompressed, several GBPS level through extreme high frequency band (EHF, 30 ~ 300 GHz) wireless communication. It is about a wireless USB communication unit that can.

USB stands for Universal Serial Bus and is the most widely used universal interface standard for connecting peripheral devices to information devices such as computers.

Such USB is the most popular and widely used due to its size and ease of use, and therefore the technology for transferring information between devices equipped with such USB has already been standardized and commercialized a long time ago.

However, due to the recent increase in information capacity due to larger and higher resolution displays, increased data capacity due to increased computer performance and increased flow data, the demand for increased transmission speed that can quickly transmit large amounts of data has increased exponentially. I'm doing it.

In order to respond to this rapid increase in transfer speed, the USB standard has been developed from USB1.1 with a maximum transfer speed of 12Mbps to USB3.1 with a maximum transfer speed of 10Gbps, and although it has not yet been popularized, it has a maximum transfer speed of 20Gbps. News about the development of USB 3.2 is also being reported.

In order to quickly transmit large amounts of data through USB, a means of transmitting data at ultra-high speeds is required, and currently, wired connections such as USB-C type are mainly used.

However, as mentioned above, it is technically easier to perform high-speed data communication through wired communication such as a USB-C type cable, but as electronic devices gradually become mobile due to the emergence of smartphones, such high-speed data communication is performed wirelessly. The tendency to prefer is increasing significantly.

This trend also applies to mobile communications. In order to meet the increasing demand for wireless data traffic following the commercialization of 4G (4th-generation) mobile communication systems, next-generation (e.g. 5G or 6G) communication systems are expected to provide faster data wireless data. Efforts are being made to achieve communication speed. As part of these efforts, next-generation communication systems are implementing wireless communication using extreme high frequency bands (Extreme High Frequency, EHF, 30 to 300 GHz) to achieve high data transmission rates.

Reflecting this trend, technologies for wireless ultra-high-speed transmission and reception between USB devices are being developed. However, the ultra-high-speed wireless communication technology between USB devices currently under development uses chipsets with USB IP, resulting in problems such as high power consumption, frequency interference, and problems. There are a number of challenges that need to be addressed, including the limitation of not being able to satisfy the transfer rate of 5Gbps, the full data transfer rate of USB 3.0.

The present invention was developed to solve the above problems, and by performing wireless communication between USB devices using an extreme high frequency band (Extreme High Frequency, EHF, 30 ~ 300 GHz) without using a wired cable, high-speed data can be transmitted wirelessly. The purpose is to provide a wireless USB communication unit capable of sending and receiving.

In addition, by enabling high-frequency wireless communication of USB data with a single wireless communication chip without using a chipset with a USB IP, power consumption due to the use of a separate USB IP is reduced and the size of the entire communication unit is reduced, allowing it to be connected to mobile devices. The purpose is to provide an optimized wireless USB communication unit.

In addition, by modulating and communicating wirelessly to have a data transfer rate of at least twice the data transfer rate between USB devices or USB hosts, actual full duplex is possible without slowing down the transfer rate, or it operates in a time division duplex (TDD) method. The purpose is to provide a wireless USB communication unit.

In addition, by applying the RF switching method, the purpose is to provide a wireless USB communication unit capable of extremely high-frequency wireless communication through a single antenna without slowing down the transmission speed.

In order to achieve the above object, a wireless USB communication unit according to the present invention includes a device transmitting and receiving module, which is mounted or built into a USB device and includes a wireless communication chip capable of wireless communication; and a host transmission/reception module mounted or embedded in the USB host and including a wireless communication chip capable of wireless communication. When the USB host wishes to transmit and receive data, the host transmission/reception module and the device transmission/reception module are used. It is characterized by being linked with each other to transmit and receive wireless data.

According to a preferred feature of the present invention, the wireless communication chip is connected to the USB device or USB host and converts data-link layer data into physical layer data for wireless communication, Or a USB data flow control unit that converts physical layer data for wireless communication into data-link layer data and transmits it; A modem unit connected to the USB data flow control unit and modulating the data converted by the USB data flow control unit into a signal suitable for wireless transmission or demodulating the wirelessly transmitted signal into a physical data signal; A Sedes unit connected to the modem unit and serializing or paralleling signals; And it is connected to the Sedes unit, and converts the signal transmitted from the Sedes unit into a wireless signal by fusing the frequency, or separates the frequency from the wireless signal transmitted from the USB device or USB host. It may include an RF unit that transmits the signal separated from the frequency to the Sedes unit.

Additionally, the wireless communication chip may have a built-in antenna that is connected to the RF unit and capable of transmitting or receiving wireless signals.

In addition, the device transmitting and receiving module and/or the host transmitting and receiving module may further include an external antenna that is electrically connected to the wireless communication chip and capable of transmitting or receiving a wireless signal.

In addition, the USB data flow control unit adds a preamble to the actual transmission data (payload) to synchronize transmission timing when converting data-link layer data into physical layer data for wireless communication. You can.

Additionally, the USB data flow control unit may further add a header for type, type, error correction, and error detection for each transmission section of the actual transmission data (payload).

Additionally, when modulating data converted and transmitted by the USB data flow control unit, the modem unit may perform modulation to have a transfer rate of at least twice that of the transfer rate between the USB device and the USB data flow control unit.

Additionally, when demodulating data transmitted through the Sedes unit, the modem unit can restore the transfer rate of more than twice the transfer rate between the USB device and the USB data flow control unit.

Additionally, when the host transceiver module and the device transceiver module transmit and receive wireless data, the wireless data may be transmitted and received through a time division duplex (TDD) method.

Additionally, when performing modulation of data converted and transmitted by the USB data flow control unit, the modem unit may assign a unique number or address for data classification and identification.

Additionally, the modem unit can classify and/or identify the data using a unique number or address for classifying and identifying the assigned data.

In addition, the RF unit includes a phase locking circuit (PLL) that generates a constant operating frequency; A modulator that modulates a signal transmitted from the Sedes unit based on the signal generated by the phase locking circuit; and an amplifier (PA) that amplifies the signal transmitted from the modulator.

In addition, the RF unit includes a low noise amplifier (LNA) that receives and amplifies a constant operating frequency signal transmitted from the host transceiver module or the device transceiver module to minimize noise; A demodulator (Detector) that demodulates the signal transmitted from the low noise amplifier (LNA); and a limiter (LA) that removes the noise.

In addition, the RF unit further includes an RF switch connected to the amplifier (PA) or low noise amplifier (LNA), and the RF switch connects the amplifier (PA) and an antenna or an external antenna during wireless transmission and wireless reception. The low noise amplifier (LNA) can be connected to an antenna or an external antenna.

Additionally, the RF unit may perform On-Off Keying (OOK) modulation or demodulation when converting the signal or separating frequencies.

Additionally, the frequency may include a 30GHz to 300GHz band.

According to the present invention, high-speed data transmission and reception is possible wirelessly by performing wireless communication between a USB device and a USB host using an extreme high frequency band (EHF, 30 to 300 GHz) without using a wired cable.

In addition, by enabling high-frequency wireless communication of USB data with a single wireless communication chip without using a chipset with USB IP, power consumption due to the use of a separate USB IP can be reduced, and the size of the entire communication unit can be reduced. It can be.

In addition, by modulating the data transfer rate to have a data transfer rate of at least twice that of the USB device or USB host and communicating wirelessly, actual full duplex may be possible without a decrease in the transfer rate.

In addition, by applying a switching communication method through an RF switch, high-frequency wireless communication is possible through a single antenna without slowing down the transmission speed.

1 is a configuration diagram of a wireless USB communication unit according to an embodiment of the present invention.
FIG. 2 is a diagram showing LUP or LDP packet processing of the USB data flow control unit of the wireless USB communication unit shown in FIG. 1.
FIG. 3 is a diagram showing the generation of an LDN or LUP (when there is no link command to transmit) command of the USB data flow control unit of the wireless USB communication unit shown in FIG. 1.
FIG. 4 is a diagram showing NRDY packet processing of the USB data flow control unit of the wireless USB communication unit shown in FIG. 1.
FIG. 5 is a diagram showing a previous packet retransmission operation due to an NRDY response on the Rx side of the USB data flow control unit of the wireless USB communication unit shown in FIG. 1.
FIG. 6 is a diagram showing ITP packet processing of the USB data flow control unit of the wireless USB communication unit shown in FIG. 1.
FIG. 7 is a diagram showing ITP packet transmission of the USB data flow control unit of the wireless USB communication unit shown in FIG. 1.
FIG. 8 is a diagram showing other packet processing of the USB data flow control unit of the wireless USB communication unit shown in FIG. 1.
FIG. 9 is a diagram showing other packet transmission of the USB data flow control unit of the wireless USB communication unit shown in FIG. 1.
Figures 10 to 14 are diagrams for explaining the serdes part of the wireless USB communication unit shown in Figure 1.
Figure 15 is a configuration diagram of the RF unit of the wireless USB communication unit shown in Figure 1.
FIGS. 16A and 16B are diagrams showing characteristics of 9Gbps RF in the wireless USB communication unit shown in FIG. 1.

The features and effects of the present invention described above will become more apparent through the following detailed description in conjunction with the accompanying drawings, and accordingly, those skilled in the art will be able to easily implement the technical idea of the present invention. You will be able to. Since the present invention can make various changes and take various forms, specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention. The terms used in this application are only for describing specific embodiments and are not intended to limit the invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a configuration diagram of a wireless USB communication unit according to an embodiment of the present invention, and FIG. 2 is a configuration diagram of an RF unit of the wireless USB communication unit shown in FIG. 1.

Referring to this, the wireless USB communication unit according to an embodiment of the present invention includes a device transmitting and receiving module 10 and a host transmitting and receiving module 20, which are respectively mounted on a USB device (D) and a USB host (H), The device transmitting/receiving module 10 and the host transmitting/receiving module 20 are interconnected and configured to communicate wirelessly.

Here, examples of the USB device (D) include USB memory, smartphones, tablet PCs, laptops, etc., while examples of the USB host (H) include smartphones, tablet PCs, laptops, etc.

For example, according to the wireless USB communication unit according to the present invention, the device transmitting and receiving module 10 and the USB memory are combined and connected, and the host transmitting and receiving module 20 is mounted on the smartphone or built into the smartphone. The device transmitting and receiving module 10 and the host transmitting and receiving module 20 are linked together to transmit and receive wireless data, so that data in USB memory can be transferred to a smartphone without a separate cable, or data in the smartphone can be transferred to a USB memory device. It can be stored in memory.

To this end, the device transmitting and receiving module 10 and the host transmitting and receiving module 20 each include a wireless communication chip 100, and the wireless communication chip 100 performs various communication-related operations.

The wireless communication chip 100 includes an Extreme High Frequency (EHF) chip capable of transmitting Gbps data, and a semiconductor chip for extremely high frequency transmission can be applied without limitation.

Here, the wireless communication chip 100 included in the device transmission/reception module 10 and the host transmission/reception module 20 is the same wireless communication chip, and therefore, the host transmission/reception module 20 in the device transmission/reception module 10 The case where data is transmitted is mainly explained. Conversely, when data is transmitted from the host transmission/reception module 20 to the device transmission/reception module 10, the host transmission/reception module 20 and the device transmission/reception module 10 Since only the object location changes, all operation composition and principles are the same, so unnecessary explanation will be omitted.

The wireless communication chip 100 exchanges data-link layer data with the USB device (D) or USB host (H), and uses this data-link layer data through high-frequency wireless communication. They are converted into physical layer signals for wireless communication.

To this end, as shown in FIG. 1, the wireless communication chip 100 includes a USB data flow control unit 110, a modem unit 120, a Sedes unit 130, and an RF unit 140. It includes and may further include an antenna (no reference numeral).

The USB data flow control unit 110 is connected to a USB device (D) or a USB host (H) and converts data-link layer data into physical layer data for wireless communication, or Physical layer data for wireless communication is converted into data-link layer data and transmitted.

For example, assuming a case where data is transmitted from a USB device (D) to a USB host (H), the USB data flow control unit 110 connected to the USB device (D) is a data-link layer (Data-link Layer) Converts data into physical layer data for wireless communication, and the USB data flow control unit 110 connected to the USB host (H) converts the physical layer data transmitted from the USB device (D) It is converted into data-link layer data and transmitted to the USB host (H).

At this time, when converting data-link layer data into physical layer data for wireless communication as described above, the USB data flow control unit 110 uses the actual transmission data (payload) to synchronize transmission timing. A preamble can be added.

Additionally, in addition to the preamble, a header for type, type, error correction, error detection, etc. for each transmission section of the actual transmission data (payload) may be added.

In addition, multiple tasks such as packaging of each data can be performed.

For example, as shown in FIG. 2, LUP or LDP packets can be processed, and as shown in FIG. 3, an LDN or LUP (when there is no link command to transmit) command can be generated.

Additionally, as shown in Figure 4, NRDY packet processing can be performed, and as shown in Figure 5, the Rx side can also perform a task of retransmitting the previous packet due to the NRDY response.

Additionally, as shown in FIG. 6, ITP packet processing can be performed, and as shown in FIG. 7, ITP packet transmission can be performed.

Additionally, as shown in FIG. 8, other packet processing can be performed, and as shown in FIG. 9, other packet transmission tasks can also be performed.

Therefore, assuming a case where data is transmitted from the USB device (D) to the USB host (H), the USB data flow control unit 110 connected to the USB device (D) transmits the data transmitted from the USB device (D) A preamble for timing synchronization can be added, and in addition, headers for type, type, error correction, error detection, etc. for each transmission section of the actual transmission data (payload) can be added.

On the contrary, the USB data flow control unit 110 connected to the USB host uses the header and preamble information to control transmission timing, distinguish data packaging of actual transmission data (payload), detect errors, and correct the actual transmission data. Transmission data can be reliably delivered to the USB host (H).

The modem unit 120 is connected to the USB data flow control unit 110 and modulates the data converted by the USB data flow control unit 110 into a signal suitable for wireless transmission, or converts the wirelessly transmitted signal into a signal suitable for wireless transmission. It is demodulated into a physical data signal.

When modulating the data converted by the USB data flow control unit 110, the modem unit 120 modulates the data to have a transfer rate of at least twice the transfer rate between the USB device and the USB data flow control unit, and performs demodulation. In this case, the signal that has been modulated to have a transmission rate of twice or more is restored to its original transmission rate between the USB device (D) and the USB data flow control unit 110.

This is to communicate wirelessly without lowering the transmission speed of the USB device (D). For this purpose, when the host transmission/reception module 20 and the device transmission/reception module 10 communicate wirelessly with each other, time division duplex communication (TDD) The wireless communication is performed using the Duplex method.

This will be explained as an example, assuming a case where data is transmitted from a USB device (D) to a USB host (H).

First, data is transmitted from the USB device (D) to the USB data flow control unit 110 at a speed of 4.8 Gbps, which is the USB 3.0 standard.

Data transmitted at a transfer rate of 4.8 Gbps is transmitted to the modem unit 120 through the USB data flow control unit 110, and the modem unit 120 transmits the data at a transfer rate of at least twice or more (for example, about 10 Gbps). Modify it to have

The signal modulated in this way is transmitted from the device transceiver module 10 to the host transceiver module 20 via the RF unit 140 and the antenna. At this time, it is transmitted through a time division duplex (TDD) method.

The signal transmitted in this way is again transmitted to the modem unit 120 through the RF unit 140 of the host transceiver module 20, and the modem unit 120 of the host transceiver module 20 returns to the original speed of 4.8. It is demodulated to have a transmission rate of Gbps and transmitted to the USB data flow control unit 110.

Therefore, the transmitting and receiving module 10 for the device and the transmitting and receiving module 20 for the host alternately perform one task of transmitting-receiving or receiving-transmitting by dividing time moment by moment according to the time division duplex (TDD, Time Division Duplex) method. Even if it is performed slowly, the actual transfer speed is configured to be 4.8Gbps, the original transfer rate of USB 3.0, so full duplex can be achieved without deteriorating the transfer rate.

Meanwhile, the modem unit 120 allocates a unique number or address for data classification and identification when performing modulation of data converted and transmitted by the USB data flow control unit, and also distinguishes the assigned data when performing demodulation. and classifies and/or identifies the data with a unique number or address for identification.

Therefore, when performing a transmission task, a unique number or address is assigned for data classification and identification, and when performing a receiving task, the data is expressed as being classified and/or identified using the unique number or address for distinguishing and identifying the assigned data. It may be possible.

The Sedes (130) unit performs the task of serializing or parallelizing signals. This serdes unit operates between the modem unit 120 and the RF unit 140, serializes the signal transmitted from the modem unit 120 and transmits it to the RF unit 140, and transmits the signal transmitted from the RF unit 140. is parallelized and transmitted to the modem unit 120.

As shown in FIGS. 10 and 11, the serializer 130 includes a serializer (no reference numeral), a clock generator (CKs-gen., no reference number), and a deserializer (no reference number). , can include buffers (SER Buffer and DES Buffer), and can perform serialization and parallelization operations.

Additionally, as shown in FIG. 12A, a differential output signal (10Gbps data-rate) can be generated and jitter characteristics as shown in FIG. 12B can be exhibited.

As shown in FIG. 13, the deserializer may include a Multi phase Generator, Phase Interpolator, Sampler, Phase Control Unit, and 4-to-32 Dumux.

Additionally, a signal similar to the 8-phase clock generation block simulation result shown in FIG. 14 can be generated.

Therefore, it can be expressed that the service unit 130 performs a serialization task when performing a transmission task and performs a parallelization task when performing a reception task.

The RF unit 140 is connected to the Serdes unit 130 and converts the signal transmitted from the Serdes unit 130 into a wireless signal by combining the frequency, or a wireless signal transmitted from the USB device or USB host. After separating the frequency from the signal, the signal separated from the frequency is transmitted to the Sedes unit.

This RF unit 140 is connected to an antenna and serves to modulate an electrical signal into a radio frequency signal or demodulate a frequency signal into an electrical signal. For this purpose, the RF unit 140, as shown in FIG. 15, It may include a phase locking circuit (PLL, 141), a modulator (142), an amplifier (PA, 143), a low noise amplifier (LNA, 146), a demodulator (Detector, 145), and a limiter (LA, 146). , may further include an RF switch (not shown).

The phase synchronization circuit 141 generates a constant operating frequency, which may include a frequency in the 30GHz to 300GHz band for high-frequency communication, but is not limited thereto.

The modulator 142 modulates the signal transmitted from the source unit 130 based on the signal generated by the phase locking circuit 141. This means the operation of combining a data signal with the frequency generated by the phase locking circuit 141 and raising the frequency.

At this time, the modulator 142 may perform On-Off Keying (OOK) modulation, but is not limited thereto.

The amplifier 143 amplifies the frequency signal in which these data are fused.

The amplified signal is transmitted and received wirelessly through an antenna, and at this time, it may exhibit characteristics as shown in FIGS. 16A and 16B.

Meanwhile, the antenna may be an antenna built into the wireless communication chip 100, or it may be an external antenna installed to be electrically connected to the wireless communication chip 100 separately from the wireless communication chip 100.

A plurality of antennas may be provided for separate transmission and reception purposes. In this case, the transmission antenna is connected to the amplifier 143 of the RF unit 140, and the reception antenna is connected to the low noise amplifier 144. It can be.

Meanwhile, one antenna can be shared and used, and for this purpose, the wireless communication chip 100 of the wireless USB communication unit according to the present invention may include an RF switch (not shown).

Therefore, the antenna and the amplifier 143 can be connected by the RF switch when transmitting, and the antenna and the low noise amplifier 144 can be connected when receiving.

In other words, the RF switch is selectively connected to the amplifier 143 or the low-noise amplifier 144. At this time, the RF switch connects the amplifier 143 and the antenna or external antenna during wireless transmission, and the low-noise amplifier ( 144) and connect the antenna or external antenna.

If this is linked to the rate increase modulation operation, TDD wireless communication, and rate recovery demodulation operation of the modem unit 120 described above, the modem unit 120 can selectively change the time by the RF switch while the transmission rate is increased by more than 2 times. This is divided and transmission and reception are performed using the TDD method, and then the transmission rate is restored to the original speed, allowing users to experience wireless communication without any actual transmission rate degradation.

The low noise amplifier 144 receives and amplifies a constant operating frequency signal transmitted from the host transceiver module 20 or the device transceiver module 10 to minimize noise.

The received and amplified signal is transmitted to the demodulator 145, and the demodulator 145 receives this signal and performs a demodulation operation to separate the frequency signal and the data signal. Here, during demodulation, OOK (On-Off Keying) demodulation can be performed as in the modulator 142, and if a different method of modulation is performed in the modulator 142, the demodulator 145 also performs the modulator 142 and the modulator 145. It is natural that demodulation is performed in the same manner.

The limiter 146 serves to remove noise from the signal transmitted from the demodulator 145, and transmits the signal thus removed to the source unit 130.

The signal transmitted to the server unit 130 is transmitted to the USB device or USB host again through the modem unit 120 and the USB data flow control unit 110, thereby completing communication.

The wireless USB communication unit according to the present invention has been described above, and next, the process of transmitting data from a USB device to a USB host will be described in order.

First, when data is to be transmitted from the USB device (D) to the USB host (H), the data is transmitted from the USB device (D) to the device transmission/reception module 10 connected to the USB device (D).

At this time, data is transmitted to the USB data flow control unit 110 of the device transmission/reception module 10, and the USB data flow control unit 110 converts the data link layer data into physical layer data and transmits it to the modem unit 120. do. At this time, as described above, a preamble, head, etc. may be added during data conversion, and various tasks may be performed.

The modem unit 120 receives the data and modulates it to have a transfer rate that is at least two or more of the transfer rate from the USB device (D) to the device transmission/reception module 10 connected to the USB device (D), and transmits the data to the data transmission unit 130. ) is transmitted.

At this time, the modem unit 120 may assign a unique number or address for data classification and identification when performing modulation of data converted and transmitted by the USB data flow control unit 110.

The service unit 130 serializes the signal transmitted from the modem unit 120 and transmits it to the RF unit 140.

The modulator 142 of the RF unit 140 uses the OOK method or another method set by the user to transmit the signal from the sudden death unit 130 at the frequency based on the frequency signal generated by the phase locking circuit 141. modulated through

The modulated signal is transmitted to the RF switch through the amplifier 143, and the RF switch connects the amplifier 143 and the antenna for transmission and transmits a wireless signal through the antenna.

At this time, the wireless signal may be transmitted in the TTD method as described above.

The signal transmitted wirelessly is transmitted to the host transmission/reception module 20 connected to the USB host (H).

In more detail, it is transmitted to the antenna of the host transmitting and receiving module 20, and at this time, for reception, the RF switch of the wireless communication chip 100 of the host transmitting and receiving module 20 is connected to the antenna and the host transmitting and receiving module 20. Connect the low noise amplifier (144).

The wireless signal transmitted to the low noise amplifier 144 is transmitted to the demodulator 145.

The demodulator 145 separates (demodulates) the high-frequency signal and the data signal from the transmitted signal using the same modulation method (e.g., OOK method) as the modulation method of the modulator 142, and sends the separated signal to the limiter 146. Pass it to

The limiter 146 removes noise from the transmitted signal and then transmits it to the SDS unit 130, and the signal passing through the SDS unit 130 is demodulated in the modem unit 120 and then sent to the USB data flow control unit 110. ), the data transfer is completed by being transmitted to the USB host (H).

At this time, as described above, when the modem unit 120 demodulates data transmitted through the serdes unit 130, the transfer rate is more than twice the transfer rate between the USB device (D) and the USB data flow control unit 110. restore it

In addition, the modem unit 120 of the host transmission/reception module 20 transmits data using a unique number or address for data classification and identification assigned by the modem unit 120 of the device transmission/reception module 10. It is natural to distinguish and/or identify.

Meanwhile, when data and signals are transferred from the USB host (H) to the USB device (D), the USB host (H) and the USB device Since only the position of (D) changes and all operations are largely the same, further explanation will be omitted.

Above, the USB communication unit according to the present invention has been described. Therefore, by using the USB communication unit according to the present invention, the user can use the extreme high frequency band (Extreme High Frequency, EHF, 30 ~ 300 GHz) without using a wired cable. By performing wireless communication between a USB device and a USB host, high-speed data transmission and reception is possible wirelessly.

In addition, by enabling high-frequency wireless communication of USB data with a single wireless communication chip without using a chipset with USB IP, power consumption due to the use of a separate USB IP can be reduced and the size of the entire communication unit can be reduced. You can do it.

In addition, by modulating and communicating wirelessly to have a data transfer rate of at least twice the data transfer rate between USB devices or USB hosts, actual full duplex is possible without slowing down the transfer rate, or it operates in a time division duplex TDD (Time Division Duplexing) method. A wireless USB communication unit can be used.

Additionally, by applying a switching communication method through an RF switch, extremely high-frequency wireless communication is possible through a single antenna without slowing down the transmission speed.

The configuration and operation of the USB communication unit according to the present invention have been described above, and the detailed description of the present invention described above has been described with reference to preferred embodiments of the present invention, but those skilled in the art or those skilled in the art Those of ordinary skill in the art will understand that various modifications and changes can be made to the present invention without departing from the spirit and technical scope of the present invention as set forth in the claims of the present invention.

10: Transmission/reception module for device
20: Host transmission/reception module
100: wireless communication chip
110: USB data flow control unit
120: modem unit
130: Third Division
140: RF department

Claims (16)

A transmitting and receiving module for a device that is mounted on or built into a USB device and includes a wireless communication chip capable of wireless communication; and
It includes a host transmission/reception module mounted on or built into the USB host and including a wireless communication chip capable of wireless communication,
The wireless communication chip includes an EHF (Extreme High Frequency) chip capable of transmitting Gbps data,
When the USB host wants to transmit and receive data, the host transmission and reception module and the device transmission and reception module are linked to each other to transmit and receive wireless data,
The wireless communication chip is,
It is connected to the USB device or USB host and converts data-link layer data into physical layer data for wireless communication, or converts physical layer data for wireless communication into data. A USB data flow control unit that converts and transmits link layer (Data-link Layer) data;
A modem unit connected to the USB data flow control unit and modulating the data converted by the USB data flow control unit into a wireless transmission signal or demodulating the wirelessly transmitted signal into a physical data signal;
A Sedes unit connected to the modem unit and serializing or paralleling signals; and
It is connected to the Sedes unit and converts the signal transmitted from the Sedes unit into a wireless signal by fusing the frequency, or separates the frequency from the wireless signal transmitted from the USB device or USB host. Characterized in that it includes an RF unit that transmits the signal separated from the frequency to the Sedes unit,
When modulating data converted and transmitted by the USB data flow control unit, the modem unit performs modulation to have a transfer rate of at least twice the transfer rate transmitted from the USB device or USB host to the USB data flow control unit. Characterized by
When the host transmitting and receiving module and the device transmitting and receiving module transmit and receive wireless data, the wireless data is transmitted and received through a time division duplex (TDD) method,
The wireless USB device is characterized in that the device transmitting and receiving module demodulates the wireless data transmitted and received from the host transmitting and receiving module to have a transmission rate equal to the transmission rate transmitted from the USB device or USB host to the USB data flow control unit. communication unit. delete According to paragraph 1,
In the wireless communication chip,
A wireless USB communication unit connected to the RF unit and having a built-in antenna capable of transmitting or receiving wireless signals. According to paragraph 1,
The transmitting and receiving module for the device and/or the transmitting and receiving module for the host,
A wireless USB communication unit electrically connected to the wireless communication chip and further comprising an external antenna capable of transmitting or receiving a wireless signal. According to paragraph 1,
The USB data flow control unit,
A wireless USB communication unit that adds a preamble to the actual transmission data to synchronize transmission timing when converting data-link layer data into physical layer data for wireless communication. According to clause 5,
The USB data flow control unit,
A wireless USB communication unit further adding a header for type, type, error correction, and error detection for each transmission section of the actual transmission data. delete According to paragraph 1,
The modem unit is a wireless device characterized in that, when demodulating data transmitted through the Sedes unit, the transmission rate of more than twice the transmission rate is restored to the transmission rate transmitted from the USB device or USB host to the USB data flow control unit. USB communication unit. delete According to clause 8,
A wireless USB communication unit, wherein the modem unit assigns a unique number or address for data classification and identification when modulating data converted and transmitted by the USB data flow control unit. According to clause 10,
The modem unit classifies and/or identifies the data using a unique number or address for classifying and identifying the assigned data. According to clause 11,
The RF unit,
A phase-locked circuit (PLL) that generates a constant operating frequency;
A modulator that modulates a signal transmitted from the Sedes unit based on the signal generated by the phase locking circuit; and
A wireless USB communication unit comprising: an amplifier (PA) that amplifies the signal transmitted from the modulator. According to clause 12,
The RF unit,
a low noise amplifier (LNA) that receives and amplifies a constant operating frequency signal transmitted from the host transceiver module or the device transceiver module to minimize noise;
A demodulator (Detector) that demodulates the signal transmitted from the low noise amplifier (LNA); and
A wireless USB communication unit further comprising a limiter that removes the noise. According to clause 13,
The RF unit,
It further includes an RF switch connected to the amplifier (PA) or low noise amplifier (LNA),
The RF switch connects the amplifier (PA) and an antenna or an external antenna when transmitting wirelessly, and connects the low noise amplifier (LNA) and an antenna or an external antenna when receiving wirelessly. According to paragraph 1,
A wireless USB communication unit, wherein the RF unit performs OOK (On-Off Keying) modulation or demodulation when converting the signal or separating frequencies. According to paragraph 1,
A wireless USB communication unit, characterized in that the frequency includes a 30gHz to 300gHz band.