TW201225603A - Transceiver and method for transmitting data between nodes of a wireless network - Google Patents

Abstract

A transceiver and a method for transmitting data between a first node and a second node of a wireless network, wherein the first node transmits a data frame comprising a first part (R_const) and a second part (R_var), the first part (R_const) having a predefined first data rate and the second part (R_var) having a settable second data rate, wherein the first node sets the second data rate, wherein the first node transmits an identifier (SFD_var) in the first part (R_const) of the data frame, the identifier (SFD_var) being assigned to the set second data rate in the second part (R_var) of the data frame, wherein in the second part (R_var) of the data frame, the first node transmits data (PSDU_SFvar) at the set second data rate. wherein the second node determines the identifier (SFD_var) in the received first part (R_const), wherein the second node determines the data (PSDU_SFvar) in the received second part (R_var) of the data frame based on the determined identifier (SFD_var).

Description

201225603 VI. Description of the Invention: [Technical Field] The present invention relates to a transceiver and method for transmitting data between wireless network nodes. [Prior Art] The IEEE 802.15.4 industry standard "Wireless Medium Access Control (MAC) and Physical Layer (PHY) Technical Specification for Low Rate Wireless Personal Area Network (WPAN)" is known for use in a wireless network. A technical specification. A wireless network typically includes a plurality of nodes' each node having a transceiver for communicating between each other. Each transceiver includes a transmitter and a receiver. Wireless Personal Area Network (WPAN) can be used for wireless information transmission over, for example, relatively short distances (approximately 10 meters). In contrast to Wireless Local Area Networks (WLANs), WPANs require little or no infrastructure to transmit data' to enable small, simple, energy-efficient, and cost-effective devices to be implemented for a wide range of applications. The IEEE 802.15_4 industry standard specifies a low-rate WPAN with a raw data rate of 25 kHz/sec and uses a stationary or mobile device suitable for use in industrial surveillance and control, sensor networks. It is suitable for interactive games in the field of medium, automation and computer peripherals. In addition to the extremely simple and cost-effective implementation of the device, the extremely low power requirements of one of these devices are also of critical importance for such applications. Therefore, this industry standard strives for battery life in months to years. At the level of the κ body layer, in the 2.4 GHz ISM band (industry, science, medical) available at the raw data rate of fB=250 kbit/s, 159653.doc 201225603 IEEE 802.15.4 industry standard specifies fc = 2 megachips/sec. One of the chip rates, band spreading (spreading) and offset QPSK (quaternary phase shift keying) modulation at one symbol rate of fs = 62 5 ksymbols/second (ieee 802.15.4-2006, page 47 and below, etc.). In an 802.1 5.4 transmitter for the ISM band, the data stream to be transmitted is first converted into a sequence of one of a number of PN (pseudo-noise) sequences. For this purpose, the data stream to be transmitted is first converted into a thing called a symbol, wherein each symbol is assigned a value having a fixed bit width (for example, LV, four bits). In each symbol period (Ts = 1 / fs = 10 μ3), therefore, a PN sequence is selected using a total of four bits of the current data for a sequence set of one of a total of 16 pN sequences. In this way, each symbol consisting of four bits is assigned a symbolic unique 2PN sequence consisting of 32 binary chips (chip period Tc=Ts/32 500 ns-l/fc), and the symbol is transmitted. A value-specific PN sequence rather than the four bits. The sequence set of the (quad) quasi-orthogonal PN sequence specified in the standard includes: a -group containing eight first pN sequences, which differ from each other only in their chip values. One of the cyclic shifts; and a second group of one of the eight second pN sequences, which are also different from each other only in that one of their chip values is cyclically shifted and each of the second PN sequences The difference from one of the first-pN sequences is only that one of each second chip value is inverted (see the deletion standard 8〇2.1 5.4·2_). The length of the symbol corresponds to the assigned PN sequence: the duration of the transmission of the chip, wherein the first chip and the following chips of the -PN sequence are respectively adjacent to the front or back boundary of the symbol. The PN sequences assigned to the 嫱4丨& and 唬 are chained together and then have an even index (〇, 2, 4, on the in-phase (1) carrier by modulation 159653.doc 201225603 (with half-sine pulse shaping). The chips of ...) and the chips having odd-numbered indices 〇, 3, 5, ... on the orthogonal phase (q) carrier are subjected to offset QPSK modulation (quaternary phase shift keying). To form an offset, the quadrature phase chips are delayed by one chip period TC with respect to the in-phase chips (see IEEE 802.15·4_2〇〇6). Is the transmitter then spectrally shifted in one of the transmission channels? ^[Sequence and then enlarge it for transmission.

A receiver of a receiving node receives the transmitted radio signal by means of an antenna. The receiver converts the received signal formed by the received radio signal into data that is error-free according to the IEEE 8〇2.i 5.4 industry standard, because the receiver (name) filters the received signal, and Transform into baseband, demodulate the signal and detect the data. If the band extension uses the transmitter side sequence to occur on the transmitter side, then the band is spread on the receiver side by the corresponding despreading of the receiver side sequence. Each of the receiver side sequences is assigned a transmitter side sequence and the each receiver side sequence can be derived therefrom or even identical thereto. If, for example, the chip on the transmitter side sequence has two logical values 〇 and 1 or (equivalent to) two pairs of values ±1, then the sequence used in the receiver usually has only two chips. Sequences of different values (for example, '〇 with 1 or ±1). The cow is a case. From DE 10 2005 026 093 B4, a transceiver for data transmission systems according to the 802.H.4 industry standard is known. The transceiver includes an antenna and a transmission to the antenna for transmitting data. The transport wheel H is designed to assign a PN sequence to the _ sequence set for each _ sequence symbol. The sequence set includes the _pN sequence - the first group and the second 159653.doc 201225603 PN sequence one of the second group group. The first pN sequence and the second pN sequence differ from each other in respective sizes only in that one of the chip values is cyclically shifted. The second group includes a second pN sequence for each of the first PN sequences, wherein the second PN sequence differs from the first sequence only in the inverse of each second chip value. The transceiver includes a receiver coupled to the antenna and having a differential demodulator and a detection unit for detecting a symbol contained in a differentially demodulated signal. The detecting unit includes a sequence providing unit for providing one of the third sequence groups (from the first sequence and the second sequence). The detecting unit includes a correlation unit coupled to the sequence providing unit and configured to calculate by correlating the differentially demodulated variable signal with each of the derived sequences of the third group Relevance results. The side unit includes a rating unit connected to the correlation unit and designed to derive the value of the symbol by evaluating the correlation result. 0 on page 22 802.15.4_2〇〇6 industry standard disclosure For the transmission of the standard-compliant data frame. In the picture! A simplified illustration is shown in the middle. The data frame can be divided into three parts: a synchronization header (shr), a physical header (PHR), and a PSDU intercept (physical service data unit, psDu). The synchronization header SHR includes a preamble P and a frame start delimiter (SFD). The entity header PHR has a message and a trailer. The frame length (FL) and a reserved bit (RS). material. The receiver uses the preamble to allow the receiver to synchronize for the incoming synchronization header SHR by means of a sequence (for example, a sequence) for detecting a sequence known on the subsequent receiver side. The received signal implements at least 159653.doc 201225603 for one chip synchronization and one symbol synchronization. Based on the preamble, a time base of the sampling time including the code month and the symbol boundary is determined in the receiver. In the synchronized state of the receiver, the implemented synchronization forms a time base by which the receiver can receive subsequent data by means of the time base. In the received apostrophe, after the frame start delimiter SFD follows the PDSU block, the data of the PDSU field can be demodulated and detected by means of the time base.

Figure 2 shows a circuit from one of the transceivers of one of the wireless networks from the prior art DE 1〇 2〇〇5 〇 26 〇 93 B4. The circuit includes a receiver 1 connected to one of the antennas 80. Some of the components of the receiver 1 include an analog amplifier, a mixer, a filter, a analog-to-digital converter, and a differential demodulator. The unit (4) is connected to the receiver 10. Output. The side unit includes a correlation unit and an evaluation unit and a sequence providing a single S connected to the correlation unit. - Differential demodulation The variable signal is transmitted from the receiving HU to the detection list - the input. The detection unit 2 (H) measures the symbols contained in the differentially demodulated signal. For this purpose, the signal present in the wafer clock is first correlated with the receiver side sequence in the correlation unit, such The receiver-side sequence provides a phantom test order U from the sequence header. This results in a correlation result indicating the coincidence of the signal with the respective receiver-side sequence. The unit 20 evaluation unit evaluates the correlation. As a result, the data is output to the interface 4Q. The detection unit 2 can be set via the interface 40 by means of the register. The circuit of Fig. 2 includes a frame-opening detection H 30, which is designed to Compare the value of the (four) side value of the beginning of the tfi box delimiter SFD with the value of the beginning delimiter SFD of the frame in the pure 159653.doc 201225603 data string. For example, the receiver of the start line identifier SFD will be used. The side value is implemented as a standard-compliant sequence 1 1 1 0 〇1 0 1 [A7 hex]_ as ieeE 802.15.4-2004, page 44. As an alternative example, interface 40 can be used Stylize the receiver side value in a temporary save 3 1 . If the frame begins with the delimiter SF The receiving side value of D matches the value of the frame start delimiter SFD in the data stream, and the frame start delimiter detector 3 〇 actuates the detecting unit 2 to detect the follow-up frame. The data PSDU after the start delimiter SFD. [Summary] The purpose of this month is to improve the method for transmitting data between nodes in a wireless network to a possible extent. This object is achieved by having an independent technical solution. One of the characteristics of the method is achieved. Advantages are improved by the subject matter of the related technical solutions and can be found in the specification. θ According to the present invention, a method is provided for use between a first node and a second node of a wireless network Method for transmitting data. In the method, the first node transmits a data frame including a first part and a second part. The data frame is a to-be-transferred unit. The first neighboring tool preferably includes a preamble, the preamble implementing synchronization of the receiving second node. The second portion of the data frame advantageously contains a payload to be transmitted. Advantageously, the second portion of the data frame additionally has One address, The address indicates that the data frame of the data frame is intended to be a destination point. The second portion of the data frame preferably follows the first portion so that the second portion does not need to be buffered. .doc -10- 201225603 The first portion of the data frame has a predefined first data rate. The first data rate is, for example, specified in a wireless network by a hardware implementation. As an alternative, The predefined first data rate can be predefined by stylizing (in particular) a register value. In contrast, the

The second data rate of one of the second portions of the data frame. Preferably, the second data rate is set at the first data rate. Preferably, the second data rate can be set to a different value than the first data rate. However, if a transmission conforming to the standard is to occur, then the second asset: rate and the first data rate can advantageously be set to the same value. The first node sets the second data rate. The second data rate is preferably set by the first node independently of the second node. Therefore, for each-individual transmission, no correspondence is required between the first node and the second node with respect to the second data rate to be used. The values of the second data rates that can be used by the nodes of the wireless network are preferably set in one of all nodes of the wireless network or implemented as an alternative in a fixed manner. Wait for the transceiver to be in the middle. From the first node, an identification 传输 is transmitted in the first part of the message frame. The identifier is assigned to the set data rate in the second portion of the data frame. For the assignment 'for example, one of the values is assigned at the first node X in the second node, which explicitly assigns a defined data rate to a value defined by one of the identifiers. In the method, the first node transmits the data in the second portion of the f-frame by the set second data rate. The second node determines the identifier in the received first file. The second node preferably determines the identifier before receiving the second portion of the resource frame 159653.doc 11 - 201225603. The second node determines, based on the determined identifier, the information in the second portion of the received information: Preferably, a ' is controlled based on the determined identifier to adjust one of the material rates. The embodiment of the invention, as by way of example, shown in the embodiment of Fig. 3, Fig. 4 or Fig. 5, achieves a change in the data rate that can be initiated by only one node so that it is not required during operation of the wireless network. The advantage of a complex match of the second data between the nodes. Instead, the data rate can be changed "on the fly" in the event that the communication in the network must be interrupted or reconfigured. The hardware implementation in integrated transceivers is particularly easy due to the need for a predefined second set of transmission rates between them. Another object of the invention is to improve, to the extent possible, one of the transceivers of one of the nodes of the wireless network. This object is achieved by a transceiver having a characteristic of the independent technical solution 3 for receiving a data frame and by means of a transceiver having the characteristics of the independent technical solution 4 for transmitting the data frame. Advantageous improvements are found in the subject matter of the associated technical solutions and can be found in the description. Therefore, a transceiver for receiving a data frame at one of the nodes of the wireless network is provided. The transceiver includes one of the identifiers for determining one of the first portions of a received data frame. For this purpose, the first portion of the data frame has a predefined first data rate. For example, the first data rate is specified in the transceiver by a hardware implementation. As a substitute example, the predefined first data rate can be predefined by programming a register value in a set of registers 159653.doc -12- 201225603 state register. The "Hai transceiver includes a detection unit for determining a material in a second portion of a received data frame. For this purpose, the second part of the data frame has a second data rate. The second data rate is established by the transmission node and must be determined by the transceiver of the receiving node to detect the data. The identifier is assigned to the second data rate. The assignment of one of the identifier identifier values to the second data rate is known to both a transit node and a receiving node. The transceiver includes a control unit coupled to the decision unit and coupled to the detection unit. The control unit is configured to control the detection by the detecting unit to one of the second data rates based on the determined identifier. The control unit preferably includes a digital comparator that compares the received identifier with a predefined (especially stored or hardware) identifier value and adjusts the comparison to the detection . According to another aspect of the present invention, a transceiver of one of the wireless networks for transmitting a data frame is provided. The transceiver includes a frame generating unit for generating a data frame to be transmitted, and the data frame to be transmitted includes a first portion and a second portion. The frame generating unit is preferably equipped to insert the data to be transmitted into the second portion of the resource frame. The transceiver includes a control unit coupled to the frame generating unit for controlling the frame generating unit. The control unit is configured to set a second data rate of the second portion of the data frame by controlling the signal generating unit. The frame generating unit is configured to generate the first portion of the resource frame 159653.doc -13-201225603 having a predefined first data rate and the data frame having the second data rate set Two parts. In addition, the message is busy generating an early element to insert an identifier assigned to the second data rate into the first portion of the data frame. The improvements described hereinafter are related to the transceiver of the third aspect, the transceiver of the fourth aspect, and to the method of the technical solution. The characteristics of the method can be derived from the functionality of such devices. Therefore, the function of the device can be derived from the characteristics of the method. According to a preferred refinement, the two transceivers illustrated above are combined with each other, wherein the same transceiver is equipped to receive and transmit the data frame including the first portion and the second portion. The transceiver preferably includes only one control unit for controlling the detection unit and for controlling the frame generation unit. The improved transceiver preferably includes a connection for connection to an antenna such that the antenna is designed, for example, on a circuit board and connected to the connection. The s transceiver preferably includes a digital interface for connecting to a processor (for example, a microcontroller). According to an advantageous refinement, the transceiver comprises a register connected to the control unit for storing a configuration value. The configuration value is assigned to the first data rate. For this purpose, the second data rate can be predefined in the wireless network by programming the configuration value in the configuration register. The configuration register is preferably connected to the interface for stylization purposes. The detection unit and/or the frame generation unit can be controlled by means of the configuration value in the configuration register. According to a preferred refinement, the transceiver includes a plurality of registers coupled to the control unit for storing a control value and assigning an identifier value to one of the control values, 159653.doc -14 - 201225603. For this purpose, each control value is assigned to a settable second data rate. The detection unit and/or the frame generation unit can be controlled by means of the control value. Preferably, one of the expansion factors of the band extension can be controlled by the frame generating unit using the control value, or the despreading can be controlled by the detecting unit using the control value. The control unit is preferably equipped to compare the identifier of the received data stream with the identifier and the identifier value. For control #, the control unit is preferably equipped to output the control value assigned to the identifier value when the identifier value and the determined identifier match each other. According to an advantageous development variant, each register and/or configuration register can be programmed specifically via the interface. In this manner, the second data rates can be adapted for all requirements in the wireless network. In an advantageous embodiment, the transceiver includes a frame start delimiter traverse for determining the identifier from a received data stream. In this way, an advantage is achieved that can be determined independently of the detection unit such that the detection unit is deactivated as long as the valid identifier has not been determined. Therefore, the reliability of data detection can be increased. θ the control unit is preferably arranged to suspend the data frame if the determined identifier in the first portion of the received data frame does not match one of the values of one of the registers Received. According to an advantageous embodiment, the data frame comprises only one preamble for the first part and for the second part. This generation only requires the data π to be synchronized so as to advantageously minimize the power consumption of the receiving node 159653.doc -15-201225603. In another embodiment, the first portion of the μ' frame and the portion of the data frame have the same mouth iron ^ °. This produces an effect of separate synchronization and/or setting for the first portion and for 5 weeks of change/demodulation for the second portion. According to a particularly advantageous refinement, the first part and the second part of the data frame are transmitted at the same transmission frequency. This produces the second portion of the data frame that can be transmitted immediately after the first portion of the data frame 4 to avoid the effects of switching time. The improved variants described above are particularly advantageous both individually and in combination with each other. All of the improved variants can be combined with each other. Several possible combinations are explained in the description of the embodiments of the figures. However, the possibilities of combining the improved variants illustrated herein are not exhaustive. [Embodiment] Hereinafter, the present invention will be explained in more detail by way of embodiments based on the respective figures. Figure 3 shows a schematic illustration of one of the data frames for wireless transmission. For example, a data frame exists in the 〇SI model. The data frame of Figure 3 includes a first portion Rc〇nst and a second portion Rvar. In addition, other parts (not shown) are available. In the first portion Rconst, one and the same data frame has a predefined first data rate, and in the second portion Rvar, one and the same data frame has a settable second data rate. Therefore, the PSDUSFvar data is transmitted at the set data rate in the second part of the data frame Rvar. Looking at the setting, the second data rate is the same as or different from the first data rate. For this purpose, at least one second data rate of the first data rate may be set differently. In the embodiment of Figure 3, the second portion of the data frame, Rvar, follows the first portion of the data frame, Rc〇nst. The first part of the data frame includes a preamble P, an entity header PHR and an identifier SFDvar. As an alternative, the header PHR can also be part of the second part of the data frame. The preamble p is used for synchronization of the receiving nodes of the first part Rc〇nst and the second part Rvar of the data frame, in particular for chip synchronization. The data frame thus includes only one preamble P for the first portion Rc〇nst and for the second portion Rvar. Since only one synchronization is required for the first part of the data frame Rconst and the second part Rvar, it is advantageous to minimize the power consumption of the receiving point. The first part of the data frame and the first part of the information frame Rvar have the same modulation. The same modulation in the first part of the data frame and in the second part has a reference to the first part Rc. ^ And for the second part Rvar does not require the advantages of separate synchronization/setting of modulation/demodulation. The first part of the data frame Rc_t and the second part of the ruler are transmitted at the same transmission frequency. Using the same transmission frequency allows the second portion of the data frame to be transmitted immediately after the first portion of the data frame Re()nst, since there is no switching time between the two frequencies. The total length of the data frame affecting power consumption is minimized by using the same transmission frequency for the first portion Rconst and the second portion Rvar. In order to set the data rate of the second part of the Rvar in the data frame, advantageously, the spreading factor is changed. The identifier SFDvar is assigned to the set second data rate in the second portion of the data frame. For this reason, the identifier 卯仏^ has been specified in the first part of the data frame Rc〇nst in the second part of the data frame r (four) I59653.doc -17· 201225603 follow-up PSDUgj: va

The data rate of Fvar# transmission. In the embodiment of Fig. 3, the identifier SFDvar is also the beginning delimiter of the frame (4) and is also used to synchronize the receiving node with the received data stream. The data frame according to Fig. 3 is used in the method for transmitting the bedding between the -node and the second node of a wireless network. In the method, the first node transmits a data frame including a first portion U, a second portion Rvar, and a portion Rc〇nst having a predefined (specially specified or programmable) first data rate and a second portion ^ has a configurable second data rate pre-defined" that the first data rate (for example) by the wireless network - the corresponding unit is known to the transmitting node and the receiving node. The outer contains - address 'the second node can compare the address ..., self identification. For example, if the address does not match its own identity, the second node can be aborted to receive the current data frame, because the data frame is obviously not intended for the second node, but is used, for example. Another node in the wireless network. The first node sets a second data rate of the second portion of the data frame, Rvar, for example 5, and sets a data rate during a program flow of a processor (for example, a _microcontroller). The setting of the second data rate can also be initiated by a user input. The second data rate is set by changing a spreading factor (spreading factor = chip rate / bit rate). Advantageously, the spreading factor varies between a value of 1 and a value of 8 (preferably, a power value of 2, such as 2 4, 8) is used. During one 〇_qPSK modulation in the 2450 MHz band, for example, at a spreading factor of 8, in a pN sequence 具有J with 32 chips, one bit of 4 bits is converted. Each of the symbols to be transmitted 159653.doc -18- 201225603. This corresponds to a standard data rate of 250 kilobits per second. In the case of a spreading factor of 8, this method is backward compatible with the IEEE 802.15.4-2006 industry standard that is precisely used for spreading factor 8. Therefore, the expansion factor 8 is provided as a preset value. Ο

In contrast, in the case of a spreading factor of 1, only one chip is transmitted for each bit. Therefore, in the case of a spreading factor, the PSDUSFvar data in the second part of the Rvar of the data frame is transmitted at a data rate that does not conform to the standard of 2 million bits/second. Consistent with the setting, the second data rate can therefore be the same as or different from the first data rate. In contrast, for the two parts of the data frame. ^,, (Differential) The modulation system is the same. The change from the first data rate to the second data rate occurs exactly at the transition between the first portion of the data frame, lam, and the second portion. To switch the spreading factor, a sequence of different lengths from which the transport node selects is provided. For example, for a spreading factor B 'select a 32 chip sequence for a spreading factor 4, select a 16 chip sequence, for - spreading factor 2, select - 8 chip sequences and for 4 bits One of the spreading factors is 1, and the transmitting node selects only one 4-chip sequence by switching. The receiving node preferably also correlates the transmitted data stream with a sequence of corresponding length by means of a correlator. The extension factor can be adjusted (especially in an adaptive manner) by the receiving node determining the measured value 'such as - the received signal quality, the error frequency or the distance from the transmitting node. Based on the setting process, the first node in the data message I * knife 1 ^ consl transmission - identifier SFDv 〆 the identifier is captured to the data frame 159653.doc -19- 201225603 the first part of the Rvar set Two data rates. For this purpose, in the case of a standard expansion factor of 8, the identifier octal hexadecimal) (ie, the 'standard-compliant sequence 1110〇1〇1) is used as the frame; the clerk delimiter SFDvar transmission. In contrast, in the case of , for example, the sequence 0 1 SFDvar will not be compliant. In the case of the spreading factor 1, 〇 1 1 1 〇 1 is used as the identifier. In the second part of the data frame Rvar, the first node transmits the PSDUSFvar data at the set second data rate. For this purpose, the up-conversion of the carrier signal becomes a sequence of strings. The second node determines the identifier SFDvar in the received first portion Rc_ of the data frame. If the identifier SFDvar cannot be associated with any of the data rates known to the receiving node, the reception of the current frame is aborted. If, in comparison, the second node associates the identifier __ with the data rate, the second node determines, based on the determined identifier SFDvar, the data PSDUSFvar in the received second portion Rvar of the data frame. If a data frame requiring an acknowledgement (ACK) is received, the response is also transmitted at the second data rate in the response frame. Figure 4 shows a schematic illustration of a block diagram of a transceiver of one of the nodes of a wireless network. Figure 4 shows that some of the functional blocks used to receive a data frame (shown schematically in Figure 5) are also used to transmit a data frame. The transceiver 1 of FIG. 4 is connected to an antenna 80 for receiving a radio signal RFrx, wherein the wireless telecom contains a data frame of a data frame as shown in the schematic diagram of FIG. . In addition, the transceiver 90 (for example, to implement the OSI model, at least one is connected to the controller PC by means of its bidirectional interface 4). The transceiver 1 of Figure 4 is designed to function as a bulk layer. The second transmitter includes an analogy and digital receiver i〇(rx), which is designed to be the first part of the amplification, conversion, filtering, analog-to-digital conversion, and the first part of the n ^ ^ 1 knife The second part of the frame Rvar has _ ° Receiver 1G is equipped to be converted by means of the same demodulation

Demodulation changes the first part of the data frame to the knife Ke〇nSt and the second part of the Rvar. same

The ground transmits the second portion Rvar of the first part of the data frame at the same transmission frequency. The demodulated output signal of the receiver 1G arrives at the input of the connected detection unit 20 and the input of the connected frame start delimiter decoding H35 (SFD decoder 35). If the detecting unit 2() is set to the correct second data rate in the second portion Rvar of the f-frame, the detecting unit 2() detects the second portion of the data frame at the correct second data rate. The data PDSUSFvar is forwarded and the corresponding bit is forwarded to the interface 4 (for example, an SPI (serial peripheral interface)) for further processing by the processor 9 in the higher layer of the (10) model. In order to set the correct second data rate 'frame start delimiter decoder', first determine the first part of the data frame before the second part Rvar & (3) one of the frame start delimiter SFDvar, where The box start delimiter SFDvar has the dual function of acting as one of the second data rate identifiers SFDv^. The frame start delimiter SFDvar is therefore used both for receiving transceivers and for symbol synchronization and for detecting The unit 2 is set to the second data rate 159653.doc • 21 · 201225603 The second=head delimiter decoder 35 is therefore also used to determine the second asset rate identifier SFDvar - the decision unit. The delimiter decodes the SFDV "to a control unit 6" / ... box start delimiter, enter 68. The control unit 6 is equipped to compare the input of the decision frame ... 63, 64, :: ^ exists The registers 72, 73, 74, 7 at the control unit 64, 65 are of a different value. For example, the register 72 stores for 25 〇 千 / sec = 弟 资 2 The identifier value and a control value. If the identifier value and the frame are strict, the header SF If Dvar matches, the control unit loads the control value from the temporary storage f 72 into the temporary storage unit 5 and outputs the value to the debt measurement unit 20. The system 20 is controlled by the control value for adaptation to A second data rate of 250 kilobits per second (i.e., for - spreading factor of 8). For example, the register 73 stores a second data rate for 5 (10) kilobits per second (ie, For one of the -exponential factor 4) identifier values and a control value. For example, the register 74 stores pin #1 megabits per second - the second data speed cap is, for the - expansion factor 2) - identifier value and _ control value. For example, the register 75 stores one identifier value and one control for 2 million bits/second - the second data rate (ie, for the - spreading factor!) According to this embodiment, the 'identifier value is composed of 2 bits. In this way, it can be 25 〇 kbit/s (identifier value 00), 500 kb/s (identifier value 〇 1). , 1 million bits/second (identifier value 10) and 2 million bits/second (identifier value 丨ι} in the second part of the data rate receiving data frame PSDUSFvar. In place of the register π to the scratchpad 75, in an alternative embodiment (not shown), a plurality of data rates of 159653.doc -22-201225603 may alternatively be established by hardwired. In this case The identifier value between the switches can be specified and the identifier value cannot be converted. "" Similarly, the control unit 60 is equipped to initiate and disable switching between the second data rates. The switching between the rates, the control unit 60 uses a configuration value and a frame start delimiter, the configuration value and the frame start delimiter SFDvar are stored in the configuration register 71 and exist in At input 61 of control unit 60. A configuration register 71 is provided to store configuration values assigned to control a second data rate. The second data rate is defined in the wireless network by staging the configuration values in the configuration register 71 in accordance with the criteria in the wireless network when the second data rate is disabled. Therefore, the unit 2 can be controlled by means of the configuration values after the switching is deactivated. The configuration value and the start of the frame starter SFD stomach can be programmed in the configuration register 7 by means of the interface 40. For example, industry-standard values can be programmed in the configuration register 71. To achieve backward compatibility with the standard, values that conform to the standard are copied from the configuration register 7 to the scratchpad 50 when the values in the scratchpad 72 to the scratchpad are the same. In this case, switching between different second data rates is not a problem. However, if only some of the values in register 72 to scratchpad 75 are different, then a priority decision is made. In this way, the number of possible second data rates can be reduced to a predefinable amount. Figure 5 is a diagram showing one of the functional blocks of the transceiver 2 for transmitting a data frame. The transceiver 2 is again connected to a processor 159653.doc -23- 201225603 90 by means of an interface. The data to be transmitted arrives at the frame generating unit 25 via the interface 4 from the processor 9. The frame generating unit 25 is configured to generate a data frame including a first portion and a second portion Rvar (such as the data frame schematically shown in FIG. 3) so as to be output at the output of the frame generating unit 25. All chips in a sequence of sequences. The chips are modulated by a transmitter i 5, mixed to a carrier k number and output to an antenna 80 after amplification by an output amplifier of the transmitter 15, wherein the antenna 80 transmits a radio signal RFtx. The transmitter is equipped to transmit the first portion of the data frame and the second portion of the data frame Rvar at the same transmission frequency. The transmitter 15 is additionally equipped to transmit the first portion Rc_t of the data frame and the second portion Rvar of the data frame in the same manner. In addition, the transmitter 15 is equipped to exclusively set the second data rate of the second portion Rvar of the data frame by varying the spreading factor. The data rate of the first part of the data frame Rvar can be set by means of the configured values of the configuration register 71. Assign the configured values in the configuration scratchpad (10) to the -preset data rate. For example, this is a predefined second data rate for the installed wireless network. In an alternative embodiment (not shown), the configuration value may also be hardwired and, for example, corresponding to a standard compliant value fu. In the embodiment of FIG. 5, processor 9() may The possible actuation of the second portion of the frame is programmed to the control values of the register 72 to the scratchpad 75. The programmed control value enables the control unit 6 to be independent of the processing (4) and thus independent of the second protocol rate of the second eight-knife Kvar T of the data frame. For this purpose, the control unit 6 〇 via the output (4) the second data rate required associated control value from the register 72 to the temporary crying - the person is loaded into the register 55. The end view register 55 is stored ^ Value, 159653.doc • 24· 201225603 The frame generation unit 25 switches the associated sequence for the selected second data rate. A plurality of functional blocks (such as interface 4〇, control unit 6〇 and scratchpad 71' 72, 73, 74, 75) are used for both receiving according to the transceiver and according to the transmission of the transceiver 2.

The invention is not limited to the embodiment variants shown in Figures 3 to 5. For example, other materials may be provided. (iv) The idea of making materials for the range of money rates, such as the 868 MHz/9l5 MHZ band. The functionality of the transceiver according to Figures 4 and 5 is particularly advantageous with the use of a general-purpose radio system. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a block diagram of the IEEE 802.15.4 industry standard. Figure 2 shows the IEEE 802.15.4 industry standard - Receiver Figure 3 - Data Frame - Example - Figure 4 is a schematic illustration of another embodiment of another embodiment of the transceiver. [Main component symbol description]

1 2 Transceiver Transceiver 10 15 20 25 30 31 Receiver/Analog and Digital Receiver Transmitter Detection Unit Frame Generation Unit Frame Start Delimiter Decoder/Decision Unit Scratchpad Frame Delimiter Decoding / decision unit 159653.doc .25· 201225603 40 bidirectional interface / interface 50 register 51 register 55 register register 60 control unit 61 input 62 input 63 input 64 input 65 input 66 input 68 input 69 connection 71 configuration Register 72 Register 73 Register 27 Register 70 Register 80 Antenna 90 Processor/Microcontroller Rconst Data Frame Part 1 RFrx Radio Signal RF tx Radio Signal Rv ar Data Frame Second Section 159653.doc -26- 201225603 RX Receiver SFDvar Identifier TX Transmitter

159653.doc •27-

Claims (1)

201225603 VII. Patent application scope: 1 · A method for transmitting data between a first node and a second node of a wireless network' wherein the first node transmission includes a first part (Rc(>nst And a data frame of a second portion (Rvar), the first portion (RC (jnst) has a predefined first data rate and the second portion (Rvar) has a settable second data rate, wherein the The first node sets the second data rate, wherein the first node transmits an identifier (SFDvar) in the first part (Rc〇nst) of the data frame, and the identifier (SFDvaf) is assigned to the data message. Setting the second data rate in the second portion (Rvar) of the frame, wherein in the second portion (Rvar) of the data frame, the first node transmits the data at the set second data rate ( psDUsFvar), wherein the second node determines the identifier (SFDvar) in the received first portion (Rc_t), wherein the second node determines that the data frame is received second based on the determined identifier (SFDvar) Part of dr) 2. The method of claim 1, wherein the received data frame requires receiving a response from one of the second nodes, and wherein the second node is based on the determined identifier (SFDvar) The first-beat rate is transmitted in the response frame. The transceiver is used to receive the data frame at one of the nodes of the wireless network 159653.doc 201225603 (1), including-determination unit (35), It is used to determine one of the first part of the received data frame (Rc〇nst) (SFDvar), the first part (Rcoim) has a predefined first data rate, including a detecting unit ( 20) for determining data (pSDUsFvar) in a second part (Rvar) of the received data frame, the second part (Rvar) having a second data rate, wherein the identifier (SFDvar) is Assigned to the second data rate, comprising a control unit (60) connected to the determining unit (35) and connected to the detecting unit (2), wherein the control unit (60) is equipped to be based on the Decision identifier (SFDvar) control by this detection The element (2〇) is adapted to detect one of the secondary rates. B.4. The transceiver (1, 2) of claim 3, comprising a connection for connecting to an antenna (8〇), And/or I are used to connect to one of the processors (9) (40). 5. Transceiver (1, 2) as in Item 3 or Request 4 'Includes - Configuration Register (71) 'It is connected to the control unit (6〇) for storing the assigned configuration value to the second data rate - the configuration value is temporarily crying. The program is programmed in the section (71) The second data rate is predefined in the wireless network by configuring the values, and the '5 zhonghai debt measurement unit (2 〇) and/or the frame generation unit (4) can be controlled by means of the far configuration value. 6. Transceiver 3 or request 4 transceiver (1, 2), 159653.doc 201225603 = includes a number of registers (72, 73, 74, 75), which are connected to the control 4 The self-storage-control value and the identifier value assigned to the control value, each control value is assigned to - the second data rate can be set, the (four) measurement unit (2G) and/or the (four) frame generation unit ( 25) It can be controlled by means of this control value. 7. The transceiver (1, 2) of claim 6, wherein the control unit (6Q) is equipped to compare the identifier (SFDvar) with the identifier value, and wherein the control unit (60) It is provided for control purposes by outputting the control value assigned to the identifier value to the identifier identifier and the determined identifier (SFDvar). 8. The transceiver (1, 2) of claim 7, wherein each register (72, 73, 74, 75) and/or the configuration register (71) are programmable. 〇9· A transceiver (7) for transmitting a data frame of a node of a wireless network, comprising a frame generating unit (25) for generating a data to be transmitted sfl box 'the data frame to be transmitted A first portion (Rc_t) and a second portion (Rvar) are included, including a control unit (60) 'connected to the frame generating unit (25), wherein the control unit (60) is equipped to control the a frame generating unit (25) for setting a second 159653.doc 201225603 data rate of the second portion (Rvar) of the data frame, wherein the frame generating unit (25) is equipped to generate the data frame The first portion (Re〇nst) having a predefined first data rate and the second portion (Rvar) of the data §fl frame having the set second data rate and wherein the frame generating unit ( 25) equipping to insert the second data rate identifier (SFDvar) assigned to the first portion (Rc〇nst) of the data frame. 10. The transceiver (1, 2) of claim 9, comprising a connection for connecting to an antenna (8〇), and/or comprising an interface (40) for connecting to a processor (90) . 11. The transceiver (1, 2) of claim 9 or claim 10, comprising a configuration register (71) coupled to the control unit (6A) for storing assignments to the second a configuration value of one of the data rates, the second data rate being pre-defined in the wireless network by programming the configuration value in the configuration register (71), wherein the detection unit (2) 〇) and/or the frame generation unit (25) can be controlled by means of the configuration value. 12. The transceiver (1, 2) of claim 9 or claim 10, comprising a plurality of registers (72, Ή, 74, 75) connected to the control list το (60) for respective Storing a control value and assigning to the control value one of the identifier values 'each control value is assigned to a settable second data rate, wherein the detection unit (20) and/or the frame generation unit (25) ) can be controlled by means of this control value. 162653.doc 201225603 13. The transceiver (1, 2) of claim 12, wherein the control unit (60) is equipped to compare the determined identifier (SFDvar) with the identifier value, and wherein the control unit ( 60) being configured to achieve the control objective by outputting the control value assigned to the identifier value when the identifier value 'and the determined identifier (SFDvar) match each other. 14. The transceiver (丨, 2) of claim 11 , 0 wherein each of the registers (72, 73, 74, 75) and/or the configuration register (71) can be programmed. ❹ 159653.doc