CN113258955B - Deep fusion system and method for broadband dual-mode wireless - Google Patents
Deep fusion system and method for broadband dual-mode wireless Download PDFInfo
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- CN113258955B CN113258955B CN202110554572.4A CN202110554572A CN113258955B CN 113258955 B CN113258955 B CN 113258955B CN 202110554572 A CN202110554572 A CN 202110554572A CN 113258955 B CN113258955 B CN 113258955B
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Abstract
The invention provides a system and a method for deep fusion of broadband dual-mode wireless, and relates to the technical field of communication. The method comprises the steps of carrying out dual-mode transmission and dual-mode reception on frame data of a media protocol data unit through two separated links of an HPLC high-speed carrier channel module and an RF high-speed broadband wireless spread spectrum channel module, switching and transmitting the frame data between the HPLC high-speed carrier channel module and the RF high-speed broadband wireless spread spectrum channel module through an analog switch, and transmitting a beacon frame and an SOF frame through the HPLC high-speed carrier channel module or the RF high-speed broadband wireless spread spectrum channel module. The invention takes broadband wireless as TMI supplement of HPLC, does not need to separately walk a protocol and separately network, and completely compatible with the HPLC operating on site by using a networking method taking wireless as broadband carrier as TMI; the integration of HPLC and wireless is really realized, and the communication performance of HPLC is greatly improved.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a system and a method for deep fusion of broadband dual-mode wireless, which relate to the mixed use of carrier waves and wireless.
Background
High Power Line Carrier (High Power Line Carrier), referred to as HPLC for short, is a stable and reliable communication method with fast communication speed and safe data transmission, which can use Power lines to transmit data. With the falling of an HPLC interconnection and interworking protocol (a low-voltage power line broadband carrier communication interconnection and interworking protocol), the HPLC is developed rapidly in two years, and the intelligent power grid electricity utilization information acquisition system simultaneously provides more real-time reliability requirements for services. However, due to the complexity of the carrier power utilization environment, the HPLC still has many dead acquisition zones and a large number of unstable acquisition zones. In order to solve the problem, a large number of enterprises begin to research dual-mode technologies in the market, and most of the dual modes in the market currently adopt HPLC +470M wireless, and HPLC and 470M are respectively networked and then are fused in an application layer. The HPLC complies with the technical specification of interconnection and intercommunication of low-voltage power line high-speed carrier communication, and 470M complies with the protocol of micropower wireless communication, however, the scheme has the disadvantages that (1) the rates are not matched, the HPLC rate is as high as 1-3M, the rate of a micropower wireless air interface is 10K, the synchronization requirement of a conduction synchronization clock (NTB) of a high-speed carrier is difficult to meet, and the service requirements of phase identification and station area identification cannot be met; (2) two networks are combined, so that the true complementation of the channels cannot be met, and the complementary advantages of the two channels are not fully exerted; (3) two networks are combined, coordination of power consumption cannot be achieved in power consumption, carrier waves and wireless yielding can be carried out at the moment, and partial power consumption of each other can be sacrificed.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a deep fusion system and a deep fusion method of broadband dual-mode wireless, load data can be wirelessly transmitted through an HPLC high-speed carrier channel and an RF high-speed broadband through an analog switch, the wireless channel is only a supplement of an HPLC channel, a protocol is not independently carried out, independent networking is not carried out, and the real fusion of broadband wireless and HPLC is realized.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
the invention provides a system and a method for deep fusion of broadband dual-mode wireless, which comprise a transmitting end, an HPLC high-speed carrier channel module, an RF high-speed broadband wireless spread spectrum channel module, an analog switch and a receiving end, wherein the transmitting end is respectively connected with the analog switch through the HPLC high-speed carrier channel module and the RF high-speed broadband wireless spread spectrum channel module, and the analog switch is connected with the receiving end through a power line.
Furthermore, the HPLC high-speed carrier channel module comprises a frame control coding unit, a load data coding unit, a constellation point mapping module, a Fourier transform module, a cyclic prefix module, a preamble coding module, a windowing module, a sampling interpolation filtering module I, a sending sampling frequency offset compensation module, a sampling interpolation filtering module II and an analog sending front end; the frame control coding unit receives frame control data, the load data coding unit receives load data, the frame control coding unit and the load data coding unit are connected with the constellation point mapping module, the Fourier transform module and the cyclic prefix module are sequentially connected, the cyclic prefix module and the preamble coding module are both connected with the windowing module, the sampling interpolation filtering module I and the sending sampling frequency offset compensation module are sequentially connected, and the sending sampling frequency offset compensation module is connected with the analog sending front end or the sending sampling frequency offset compensation module is connected with the analog sending front end through the sampling interpolation filtering module II.
Further, the frame control coding unit comprises a CRC24 coding module, a PB16 Turbo coding module, a channel interleaving module and a frame control diversity copy module, the CRC24 coding module, the PB16 Turbo coding module, the channel interleaving module and the frame control diversity copy module are sequentially connected, and the frame control diversity copy module is connected with the constellation point mapping module.
Further, the payload data encoding unit comprises a CRC24 encoding module, a scrambling module, a PB72/PB264/PB136/PB520Turbo encoding module, a channel interleaving module, a payload diversity copying module, a CRC24 encoding module, a scrambling module, a PB72/PB264/PB136/PB520Turbo encoding module, a channel interleaving module, and a payload diversity copying module, which are connected in sequence, and the payload diversity copying module is connected with the constellation point mapping module.
Further, the method comprises the steps of carrying out dual-mode transmission and dual-mode reception on frame data of a media protocol data unit through two separated links of an HPLC high-speed carrier channel module and an RF high-speed broadband wireless spread spectrum channel module, switching and transmitting the frame data between the HPLC high-speed carrier channel module and the RF high-speed broadband wireless spread spectrum channel module through an analog switch, wherein frame data of the media protocol data unit comprises an internetwork coordination frame, a beacon frame, an SOF frame and an ACK confirmation frame, and the internetwork coordination frame, the beacon frame, the SOF frame and the ACK confirmation frame can be transmitted through the HPLC high-speed carrier channel module; the beacon frame and the SOF frame can be sent through an RF high-speed broadband wireless spread spectrum channel module;
the frame data is dual-mode transmitted according to the frame type of the media protocol data unit, which includes the following conditions:
(1) for the transmission of the inter-network coordination frame and the beacon frame, the HPLC high-speed carrier channel module and the RF high-speed broadband wireless spread spectrum channel module sequentially transmit, namely the beacon frame transmitted by the transmitting end is preferentially transmitted through the HPLC high-speed carrier channel module, when the receiving end does not receive the beacon frame, the receiving end does not transmit ACK (acknowledgement) to the transmitting end, and the transmitting end transmits the beacon frame to the receiving end through the RF high-speed broadband wireless spread spectrum channel module;
(2) for the sending of the ACK confirmation frame, which channel module receives the ACK confirmation frame and returns to the original channel module;
(3) for the sending of the SOF frame, a broadcast frame and a unicast frame are specifically divided, and for the processing of the broadcast frame, an HPLC high-speed carrier channel module and an RF high-speed broadband wireless spread spectrum channel module are sequentially sent, namely, the broadcast frame sent by a transmitting end is preferentially sent through the HPLC high-speed carrier channel module, when a receiving end does not receive the broadcast frame, the receiving end does not send ACK to the transmitting end, and the transmitting end sends the broadcast frame to the receiving end through the RF high-speed broadband wireless spread spectrum channel module; for the processing of the unicast frame, alternately sending the unicast frame through an HPLC high-speed carrier channel module and an RF high-speed broadband wireless spread spectrum channel module;
dual-mode reception:
the physical layer transmission unit comprises a preamble signal, frame control data and load data, and the dual-mode reception of the data by the receiving end comprises the following steps:
step S31: the carrier of the receiving end receives the leading signal, the HPLC high-speed carrier channel module enters synchronization, the synchronization is completed, the synchronization interruption is generated, and the step S32 is entered;
step S32: the receiving end starts to receive the frame control data, and the receiving of the frame control data is finished, and the step S33 is entered;
step S33: receiving carrier or wireless frame load data according to the TMI in the frame control and the frame length of the frame control data;
carrying out dual-mode transmission on data to be forwarded by a receiving end;
dual-mode clock synchronization: the station clock synchronization is based on information carried in a beacon frame sent by an agent, and in order to ensure that stations can be synchronized, a transmitting end sends the beacon frame through an HPLC high-speed carrier channel module and an RF high-speed broadband wireless spread spectrum channel module; the receiving end preferentially processes the beacon frame received by the HPLC high-speed carrier channel module, and if the HPLC high-speed carrier channel module does not receive the beacon frame, the RF high-speed broadband wireless spread spectrum channel module receives the beacon frame and also processes the beacon frame received by the RF high-speed broadband wireless spread spectrum channel module.
Further, the broadcasting flow of the broadcast frame includes the following steps:
step S101: the transmitting end sends the SOF frame for the first time, the 1 st broadcast is the standard TMI of the HPLC, the SOF frame is sent through the HPLC high-speed carrier channel module, and then the step S102 is carried out;
step S102: the transmitting end sends the SOF frame for the second time, the 2 nd broadcast is wireless TMI, the SOF frame is sent through the RF high-speed broadband wireless spread spectrum channel module, and then the step S104 is carried out;
step S104: and the transmitting terminal sends the SOF frame for the third time, the 3 rd broadcast is standard TMI of the HPLC, and the SOF frame is sent through the HPLC high-speed carrier channel module and is ended.
Further, the unicast flow of the unicast frame is that the transmitting end sends the SOF frame, and the SOF frame is alternately sent through the HPLC high-speed carrier channel module and the RF high-speed wideband wireless spread spectrum channel module according to the value of the TMI.
Further, the unicast flow of the unicast frame specifically comprises the following steps:
step S201: the transmitting end sends the SOF frame, judges the value of the TMI, if the TMI is the TMI of the carrier, the transmitting end sends the SOF frame through the HPLC high-speed carrier channel module, the sending frequency is added with 1, if the receiving end receives the ACK frame, the process is finished, if the receiving end does not receive the ACK frame, the process goes to step S202.
Step S202: the transmitting end sends the SOF frame, judges the value of TMI, if TMI is wireless TMI, the transmitting end sends the SOF frame through the RF high-speed broadband wireless spread spectrum channel module, the sending frequency is added with 1, if the receiving end receives the ACK frame, the process is finished, if the receiving end does not receive the ACK frame, the process goes to step S201;
step S203: judging the number of times of sending the SOF frame by the transmitting terminal, if the number of times of sending the SOF frame by the transmitting terminal does not exceed 9, continuing to step S201, and if the number of times of sending the SOF frame by the transmitting terminal exceeds 9, entering step S204;
step S204: and deleting the sending message of the sending queue.
Further, the dual-mode transmission of the data to be forwarded by the receiving end specifically includes:
(1) for the transmission of the inter-network coordination frame and the beacon frame, the HPLC high-speed carrier channel module and the RF high-speed broadband wireless spread spectrum channel module sequentially transmit, namely the beacon frame transmitted by the receiving end is preferentially transmitted through the HPLC high-speed carrier channel module, when the opposite side does not receive the beacon frame, the opposite side does not transmit ACK (acknowledgement) to the receiving end, and the receiving end transmits the beacon frame to the opposite side through the RF high-speed broadband wireless spread spectrum channel module;
(2) for the sending of the ACK confirmation frame, which channel module receives the ACK confirmation frame and returns to the original channel module;
(3) for the sending of the SOF frame, a broadcast frame and a unicast frame are specifically divided, and for the processing of the broadcast frame, an HPLC high-speed carrier channel module and an RF high-speed broadband wireless spread spectrum channel module are sequentially sent, namely, the broadcast frame sent by a receiving end is preferentially sent through the HPLC high-speed carrier channel module, when the opposite side does not receive the broadcast frame, the opposite side does not send ACK to the receiving end, and the receiving end sends the broadcast frame to the opposite side through the RF high-speed broadband wireless spread spectrum channel module; for the processing of the unicast frame, the unicast frame is alternately transmitted through an HPLC high-speed carrier channel module and an RF high-speed broadband wireless spread spectrum channel module.
By combining the technical scheme, the invention has the beneficial effects that:
the invention takes broadband wireless as a TMI supplement of HPLC, does not need to independently walk a protocol and independently form a network, so that the carrier waves and the wireless are deeply fused in a network layer; moreover, the networking method that the wireless is used as the broadband carrier wave to be used as the TMI is completely compatible with the HPLC running on site; the integration of HPLC and wireless is really realized, and the communication performance of HPLC is greatly improved; the power consumption is greatly superior to that of a double mode running in the market, and the problem that double-mode dynamic power consumption in the industry cannot be solved is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a system diagram provided by an embodiment of the present invention;
fig. 2 is a unicast flow of a unicast frame in the embodiment.
Detailed Description
The objects, aspects and advantages of the present invention will become apparent from the following detailed description, which, when taken in conjunction with the drawings, illustrate by way of example only some, but not all, of the embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, their indicated orientations or positional relationships are based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, the present embodiment provides a broadband dual-mode wireless deep fusion system, which includes a transmitting end, an HPLC high-speed carrier channel module, an RF high-speed broadband wireless spread spectrum channel module, an analog switch, and a receiving end, where the transmitting end is connected to the analog switch through the HPLC high-speed carrier channel module and the RF high-speed broadband wireless spread spectrum channel module, and the analog switch is connected to the receiving end through a power line. The high-speed carrier channel module of HPLC comprises a frame control coding unit, a load data coding unit, a constellation point mapping module, a Fourier transform module, a cyclic prefix module, a preamble coding module, a windowing module, a sampling interpolation filtering module I, a sending sampling frequency offset compensation module, a sampling interpolation filtering module II and an analog sending front end; the frame control coding unit receives frame control data, the load data coding unit receives load data, the frame control coding unit and the load data coding unit are connected with the constellation point mapping module, the Fourier transform module and the cyclic prefix module are sequentially connected, the cyclic prefix module and the preamble coding module are both connected with the windowing module, the sampling interpolation filtering module I and the sending sampling frequency offset compensation module are sequentially connected, and the sending sampling frequency offset compensation module is connected with the analog sending front end or the sending sampling frequency offset compensation module is connected with the analog sending front end through the sampling interpolation filtering module II.
The frame control coding unit comprises a CRC24 coding module, a PB16 Turbo coding module, a channel interleaving module and a frame control diversity copying module, wherein the CRC24 coding module, the PB16 Turbo coding module, the channel interleaving module and the frame control diversity copying module are sequentially connected, and the frame control diversity copying module is connected with the constellation point mapping module. The load data coding unit comprises a CRC24 coding module, a scrambling module, a PB72/PB264/PB136/PB520Turbo coding module, a channel interleaving module and a load diversity copying module, the CRC24 coding module, the scrambling module, the PB72/PB264/PB136/PB520Turbo coding module, the channel interleaving module and the load diversity copying module are sequentially connected, the load diversity copying module is connected with the constellation point mapping module, and the PB72/PB264/PB136/PB520Turbo coding module is a PB72 Turbo coding module or a PB264 Turbo coding module or a PB136 Turbo coding module or a PB520Turbo coding module.
In the HPLC high speed carrier channel module, at the transmitting end, the physical layer receives input from the data link layer, and two separate links are used to process frame control data and payload data, respectively. After the frame control data is subjected to CRC24 and Turbo coding, channel interleaving and frame control diversity copying are carried out; after CRC24 coding, scrambling, Turbo coding, channel interleaving and load diversity copying, constellation point mapping is carried out on load data and frame control data, the mapped data is subjected to IFFT (Fourier transform) processing and then added with a cyclic prefix to form an OFDM symbol, after window processing is carried out on the OFDM symbol, a PPDU (physical layer data transmission unit) signal is formed and sent to a simulation front end and finally sent to a power line channel; or the load data is transmitted to the power line through the RF high-frequency wireless spread spectrum channel module. The invention uses broadband wireless as an extended TMI of the HPLC, uses the broadband wireless as a TMI complement of the HPLC, adds analog switches of wireless and carrier waves to the physical layer, and adds the conduction synchronous clock information (NTB information) in the wireless load domain at the same time.
In the invention, in order to fuse HPLC and RF to the maximum extent, the micropower wireless communication protocol completely uses a format defined by 'low-voltage power line broadband carrier communication technical specification', a wireless channel is only a supplement of a channel, a protocol is not independently carried out, and independent networking is not carried out, so that the real fusion of broadband wireless and HPLC is realized, namely, the deep fusion of carrier and wireless at a network layer is realized.
The invention also provides a broadband dual-mode wireless deep fusion method, which comprises the steps of carrying out dual-mode transmission and dual-mode reception on frame data of a media protocol data unit through two separated links of the HPLC high-speed carrier channel module and the RF high-speed broadband wireless spread spectrum channel module, switching and transmitting the frame data between the HPLC high-speed carrier channel module and the RF high-speed broadband wireless spread spectrum channel module through an analog switch, wherein the frame data of the media protocol data unit comprises an internetwork coordination frame, a beacon frame, a SOF frame and an ACK confirmation frame, and the internetwork coordination frame, the beacon frame, the SOF frame and the ACK confirmation frame can be transmitted through the HPLC high-speed carrier channel module; the beacon frame and the SOF frame can be sent through an RF high-speed broadband wireless spread spectrum channel module;
frame data is dual-mode transmitted according to a frame type of a Media Protocol Data Unit (MPDU) in the following cases:
(1) for the transmission of the inter-network coordination frame and the beacon frame, the HPLC high-speed carrier channel module and the RF high-speed broadband wireless spread spectrum channel module sequentially transmit, namely the beacon frame transmitted by the transmitting end is preferentially transmitted through the HPLC high-speed carrier channel module, when the receiving end does not receive the beacon frame, the receiving end does not transmit ACK (acknowledgement) to the transmitting end, and the transmitting end transmits the beacon frame to the receiving end through the RF high-speed broadband wireless spread spectrum channel module;
(2) for the sending of the ACK confirmation frame, which channel module receives the ACK confirmation frame and returns to the original channel module;
(3) for the sending of the SOF frame, a broadcast frame and a unicast frame are specifically divided, and for the processing of the broadcast frame, an HPLC high-speed carrier channel module and an RF high-speed broadband wireless spread spectrum channel module are sequentially sent, namely, the broadcast frame sent by a transmitting end is preferentially sent through the HPLC high-speed carrier channel module, when a receiving end does not receive the broadcast frame, the receiving end does not send ACK to the transmitting end, and the transmitting end sends the broadcast frame to the receiving end through the RF high-speed broadband wireless spread spectrum channel module; the unicast frame is processed and alternately sent through an HPLC high-speed carrier channel module and an RF high-speed broadband wireless spread spectrum channel module;
the broadcasting flow of the broadcasting frame comprises the following steps:
step S101: the transmitting end sends the SOF frame for the first time, the 1 st broadcast is the standard TMI of the HPLC, the SOF frame is sent through the HPLC high-speed carrier channel module, and then the step S102 is carried out;
step S102: the transmitting end sends the SOF frame for the second time, the 2 nd broadcast is wireless TMI, the SOF frame is sent through the RF high-speed broadband wireless spread spectrum channel module, and then the step S104 is carried out;
step S104: and the transmitting terminal sends the SOF frame for the third time, the 3 rd broadcast is standard TMI of the HPLC, and the SOF frame is sent through the HPLC high-speed carrier channel module and is ended.
Dual-mode reception:
the physical layer transmission unit comprises a preamble signal, frame control data and load data, and the dual-mode reception of the data by the receiving end comprises the following steps:
step S31: the carrier of the receiving end receives the leading signal, the HPLC high-speed carrier channel module enters synchronization, the synchronization is completed, the synchronization interruption is generated, and the step S32 is entered;
step S32: the receiving end starts to receive the frame control data, the frame control data is received completely, a frame control receiving completion terminal is generated, and the step S33 is entered;
step S33: receiving carrier or wireless frame payload data according to TMI in FC (frame control) and frame length of frame control data;
the unicast flow of the unicast frame is that the transmitting end sends the SOF frame, and the SOF frame is alternately sent through the HPLC high-speed carrier channel module and the RF high-speed broadband wireless spread spectrum channel module according to the value of the TMI; as shown in fig. 2, the unicast flow of the unicast frame includes the following specific steps:
step S201: the transmitting end sends the SOF frame, judges the value of the TMI, if the TMI is the TMI of the carrier, the transmitting end sends the SOF frame through the HPLC high-speed carrier channel module, the sending frequency is added with 1, if the receiving end receives the ACK frame, the process is finished, if the receiving end does not receive the ACK frame, the process goes to step S202.
Step S202: the transmitting end sends the SOF frame, judges the value of TMI, if TMI is wireless TMI, the transmitting end sends the SOF frame through the RF high-speed broadband wireless spread spectrum channel module, the sending frequency is added with 1, if the receiving end receives the ACK frame, the process is finished, if the receiving end does not receive the ACK frame, the process goes to step S201;
step S203: judging the number of times of sending the SOF frame by the transmitting terminal, if the number of times of sending the SOF frame by the transmitting terminal does not exceed 9, continuing to step S201, and if the number of times of sending the SOF frame by the transmitting terminal exceeds 9, entering step S204;
step S204: and deleting the sending message of the sending queue.
Carrying out dual-mode transmission on data to be forwarded by a receiving end; the method specifically comprises the following steps:
(1) for the transmission of the inter-network coordination frame and the beacon frame, the HPLC high-speed carrier channel module and the RF high-speed broadband wireless spread spectrum channel module sequentially transmit, namely the beacon frame transmitted by the receiving end is preferentially transmitted through the HPLC high-speed carrier channel module, when the opposite side does not receive the beacon frame, the opposite side does not transmit ACK (acknowledgement) to the receiving end, and the receiving end transmits the beacon frame to the opposite side through the RF high-speed broadband wireless spread spectrum channel module;
(2) for the sending of the ACK confirmation frame, which channel module receives the ACK confirmation frame and returns to the original channel module;
(3) for the sending of the SOF frame, a broadcast frame and a unicast frame are specifically divided, and for the processing of the broadcast frame, an HPLC high-speed carrier channel module and an RF high-speed broadband wireless spread spectrum channel module are sequentially sent, namely, the broadcast frame sent by a receiving end is preferentially sent through the HPLC high-speed carrier channel module, when the opposite side does not receive the broadcast frame, the opposite side does not send ACK to the receiving end, and the receiving end sends the broadcast frame to the opposite side through the RF high-speed broadband wireless spread spectrum channel module; for the processing of the unicast frame, the unicast frame is alternately transmitted through the HPLC high-speed carrier channel module and the RF high-speed wideband wireless spread spectrum channel module, the broadcast flow of the broadcast frame includes the steps S101 to S104 as described above, and the unicast flow of the unicast frame specifically includes the steps S201 to S204 as described below.
Dual-mode clock synchronization: the clock synchronization of the STA (station) is based on information carried in a beacon frame sent by an agent, and in order to ensure that the STA can be synchronized, a transmitting end sends the beacon frame through an HPLC high-speed carrier channel module and an RF high-speed broadband wireless spread spectrum channel module; the receiving end preferentially processes the beacon frame received by the HPLC high-speed carrier channel module, and if the HPLC high-speed carrier channel module does not receive the beacon frame, the RF high-speed broadband wireless spread spectrum channel module receives the beacon frame and also processes the beacon frame received by the RF high-speed broadband wireless spread spectrum channel module.
The invention takes broadband wireless as TMI supplement of HPLC, and completely compatible with the HPLC running on site by using a networking method taking wireless as broadband carrier as TMI; the integration of HPLC and wireless is really realized, and the communication performance of HPLC is greatly improved; the power consumption is greatly superior to that of a double mode running in the market, and the problem that double-mode dynamic power consumption in the industry cannot be solved is solved.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A broadband dual-mode wireless deep fusion system is characterized in that: the device comprises a transmitting end, an HPLC high-speed carrier channel module, an RF high-speed broadband wireless spread spectrum channel module, an analog switch and a receiving end, wherein the transmitting end is connected with the analog switch through the HPLC high-speed carrier channel module and the RF high-speed broadband wireless spread spectrum channel module respectively, and the analog switch is connected with the receiving end through a power line.
2. The broadband dual-mode wireless deep fusion system according to claim 1, wherein: the high-speed carrier channel module of HPLC comprises a frame control coding unit, a load data coding unit, a constellation point mapping module, a Fourier transform module, a cyclic prefix module, a preamble coding module, a windowing module, a sampling interpolation filtering module I, a sending sampling frequency offset compensation module, a sampling interpolation filtering module II and an analog sending front end; the frame control coding unit receives frame control data, the load data coding unit receives load data, the frame control coding unit and the load data coding unit are connected with the constellation point mapping module, the Fourier transform module and the cyclic prefix module are sequentially connected, the cyclic prefix module and the preamble coding module are both connected with the windowing module, the sampling interpolation filtering module I and the sending sampling frequency offset compensation module are sequentially connected, and the sending sampling frequency offset compensation module is connected with the analog sending front end or the sending sampling frequency offset compensation module is connected with the analog sending front end through the sampling interpolation filtering module II.
3. The broadband dual-mode wireless deep fusion system according to claim 2, wherein: the frame control coding unit comprises a CRC24 coding module, a PB16 Turbo coding module, a channel interleaving module and a frame control diversity copying module, wherein the CRC24 coding module, the PB16 Turbo coding module, the channel interleaving module and the frame control diversity copying module are sequentially connected, and the frame control diversity copying module is connected with the constellation point mapping module.
4. The broadband dual-mode wireless deep fusion system according to claim 3, wherein: the load data coding unit comprises a CRC24 coding module, a scrambling module, a PB72/PB264/PB136/PB520Turbo coding module, a channel interleaving module and a load diversity copying module, wherein the CRC24 coding module, the scrambling module, the PB72/PB264/PB136/PB520Turbo coding module, the channel interleaving module and the load diversity copying module are sequentially connected, and the load diversity copying module is connected with the constellation point mapping module.
5. A deep fusion method of broadband dual-mode wireless is characterized in that: the method comprises the steps of carrying out dual-mode transmission and dual-mode reception on frame data of a media protocol data unit through two separated links of an HPLC high-speed carrier channel module and an RF high-speed broadband wireless spread spectrum channel module, switching and transmitting the frame data between the HPLC high-speed carrier channel module and the RF high-speed broadband wireless spread spectrum channel module through an analog switch, wherein the frame data of the media protocol data unit comprises an internetwork coordination frame, a beacon frame, a SOF frame and an ACK confirmation frame, and the internetwork coordination frame, the beacon frame, the SOF frame and the ACK confirmation frame can be transmitted through the HPLC high-speed carrier channel module; the beacon frame and the SOF frame can be sent through an RF high-speed broadband wireless spread spectrum channel module;
the frame data is dual-mode transmitted according to the frame type of the media protocol data unit, which includes the following conditions:
(1) for the transmission of the inter-network coordination frame and the beacon frame, the HPLC high-speed carrier channel module and the RF high-speed broadband wireless spread spectrum channel module sequentially transmit, namely the beacon frame transmitted by the transmitting end is preferentially transmitted through the HPLC high-speed carrier channel module, when the receiving end does not receive the beacon frame, the receiving end does not transmit ACK (acknowledgement) to the transmitting end, and the transmitting end transmits the beacon frame to the receiving end through the RF high-speed broadband wireless spread spectrum channel module;
(2) for the sending of the ACK confirmation frame, which channel module receives the ACK confirmation frame and returns to the original channel module;
(3) for the sending of the SOF frame, a broadcast frame and a unicast frame are specifically divided, and for the processing of the broadcast frame, an HPLC high-speed carrier channel module and an RF high-speed broadband wireless spread spectrum channel module are sequentially sent, namely, the broadcast frame sent by a transmitting end is preferentially sent through the HPLC high-speed carrier channel module, when a receiving end does not receive the broadcast frame, the receiving end does not send ACK to the transmitting end, and the transmitting end sends the broadcast frame to the receiving end through the RF high-speed broadband wireless spread spectrum channel module; for the processing of the unicast frame, alternately sending the unicast frame through an HPLC high-speed carrier channel module and an RF high-speed broadband wireless spread spectrum channel module;
dual-mode reception:
the physical layer transmission unit comprises a preamble signal, frame control data and load data, and the dual-mode reception of the data by the receiving end comprises the following steps:
step S31: the carrier of the receiving end receives the leading signal, the HPLC high-speed carrier channel module enters synchronization, the synchronization is completed, the synchronization interruption is generated, and the step S32 is entered;
step S32: the receiving end starts to receive the frame control data, and the receiving of the frame control data is finished, and the step S33 is entered;
step S33: receiving carrier or wireless frame load data according to the TMI and the frame length of the frame control data in the frame control;
carrying out dual-mode transmission on data to be forwarded by a receiving end;
dual-mode clock synchronization: the station clock synchronization is based on information carried in a beacon frame sent by an agent, and in order to ensure that stations can be synchronized, a transmitting end sends the beacon frame through an HPLC high-speed carrier channel module and an RF high-speed broadband wireless spread spectrum channel module; the receiving end preferentially processes the beacon frame received by the HPLC high-speed carrier channel module, and if the HPLC high-speed carrier channel module does not receive the beacon frame, the RF high-speed broadband wireless spread spectrum channel module receives the beacon frame and also processes the beacon frame received by the RF high-speed broadband wireless spread spectrum channel module.
6. The method according to claim 5, wherein the method comprises: the broadcasting flow of the broadcasting frame comprises the following steps:
step S101: the transmitting end sends the SOF frame for the first time, the 1 st broadcast is the standard TMI of the HPLC, the SOF frame is sent through the HPLC high-speed carrier channel module, and then the step S102 is carried out;
step S102: the transmitting end sends the SOF frame for the second time, the 2 nd broadcast is wireless TMI, the SOF frame is sent through the RF high-speed broadband wireless spread spectrum channel module, and then the step S104 is carried out;
step S104: and the transmitting terminal sends the SOF frame for the third time, the 3 rd broadcast is standard TMI of the HPLC, and the SOF frame is sent through the HPLC high-speed carrier channel module and is ended.
7. The method according to claim 5, wherein the method comprises: the unicast flow of the unicast frame is that the transmitting end sends the SOF frame, and the SOF frame is alternately sent through the HPLC high-speed carrier channel module and the RF high-speed broadband wireless spread spectrum channel module according to the value of the TMI.
8. The method according to claim 7, wherein the method comprises: the unicast flow of the unicast frame comprises the following specific steps:
step S201: the transmitting end sends the SOF frame, judges the value of TMI, if TMI is TMI of carrier, the transmitting end sends the SOF frame through the HPLC high-speed carrier channel module, the sending frequency is added with 1, if the receiving end receives the ACK frame, the end is finished, if the receiving end does not receive the ACK frame, the step S202 is entered;
step S202: the transmitting end sends the SOF frame, judges the value of TMI, if TMI is wireless TMI, the transmitting end sends the SOF frame through the RF high-speed broadband wireless spread spectrum channel module, the sending frequency is added with 1, if the receiving end receives the ACK frame, the process is finished, if the receiving end does not receive the ACK frame, the process goes to step S203;
step S203: judging the number of times of sending the SOF frame by the transmitting terminal, if the number of times of sending the SOF frame by the transmitting terminal does not exceed 9, continuing to step S201, and if the number of times of sending the SOF frame by the transmitting terminal exceeds 9, entering step S204;
step S204: and deleting the sending message of the sending queue.
9. The method according to claim 8, wherein the method comprises: the dual-mode transmission of the data to be forwarded by the receiving end specifically includes:
(1) for the transmission of the inter-network coordination frame and the beacon frame, the HPLC high-speed carrier channel module and the RF high-speed broadband wireless spread spectrum channel module sequentially transmit, namely the beacon frame transmitted by the receiving end is preferentially transmitted through the HPLC high-speed carrier channel module, when the opposite side does not receive the beacon frame, the opposite side does not transmit ACK (acknowledgement) to the receiving end, and the receiving end transmits the beacon frame to the opposite side through the RF high-speed broadband wireless spread spectrum channel module;
(2) for the sending of the ACK confirmation frame, which channel module receives the ACK confirmation frame and returns to the original channel module;
(3) for the sending of the SOF frame, a broadcast frame and a unicast frame are specifically divided, and for the processing of the broadcast frame, an HPLC high-speed carrier channel module and an RF high-speed broadband wireless spread spectrum channel module are sequentially sent, namely, the broadcast frame sent by a receiving end is preferentially sent through the HPLC high-speed carrier channel module, when the opposite side does not receive the broadcast frame, the opposite side does not send ACK to the receiving end, and the receiving end sends the broadcast frame to the opposite side through the RF high-speed broadband wireless spread spectrum channel module; for the processing of the unicast frame, the unicast frame is alternately transmitted through an HPLC high-speed carrier channel module and an RF high-speed broadband wireless spread spectrum channel module.
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